US Patent Class 257
ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)




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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  BULK EFFECT DEVICE
2  DF  .~ Bulk effect switching in amorphous material
3  DF  .~.~ With means to localize region of conduction (e.g., "pore" structure)
4  DF  .~.~ With specified electrode composition or configuration
5  DF  .~.~ In array
6  DF  .~ Intervalley transfer (e.g., Gunn effect)
7  DF  .~.~ In monolithic integrated circuit
8  DF  .~.~ Three or more terminal device
9  DF  THIN ACTIVE PHYSICAL LAYER WHICH IS (1) AN ACTIVE POTENTIAL WELL LAYER THIN ENOUGH TO ESTABLISH DISCRETE QUANTUM ENERGY LEVELS OR (2) AN ACTIVE BARRIER LAYER THIN ENOUGH TO PERMIT QUANTUM MECHANICAL TUNNELING OR (3) AN ACTIVE LAYER THIN ENOUGH TO PERMIT CARRIER TRANSMISSION WITH SUBSTANTIALLY NO SCATTERING (E.G., SUPERLATTICE, QUANTUM WELL, OR BALLISTIC TRANSPORT DEVICE)
10  DF  .~ Low workfunction layer for electron emission, e.g., photocathode electron emissive layer
11  DF  .~.~ Combined with a heterojunction involving a III-V compound
12  DF  .~ Heterojunction
13  DF  .~.~ Incoherent light emitter
14  DF  .~.~ Quantum well
15  DF  .~.~.~ Superlattice
16  DF  .~.~.~.~ Of amorphous semiconductor material
17  DF  .~.~.~.~ With particular barrier dimension
18  DF  .~.~.~.~ Strained layer superlattice
19  DF  .~.~.~.~.~ Si Ge
20  DF  .~.~.~.~ Field effect device
21  DF  .~.~.~.~ Light responsive structure
22  DF  .~.~.~.~ With specified semiconductor materials
23  DF  .~.~.~ Current flow across well
24  DF  .~.~.~ Field effect device
25  DF  .~.~.~ Employing resonant tunneling
26  DF  .~.~ Ballistic transport device
27  DF  .~.~.~ Field effect transistor
28  DF  .~ Non-heterojunction superlattice (e.g., doping superlattice or alternating metal and insulator layers)
29  DF  .~ Ballistic transport device (e.g., hot electron transistor)
30  DF  .~ Tunneling through region of reduced conductivity
31  DF  .~.~ Josephson
32  DF  .~.~.~ Particular electrode material
33  DF  .~.~.~.~ High temperature (i.e., >30 Kelvin)
34  DF  .~.~.~ Weak link (e.g., narrowed portion of superconductive line)
35  DF  .~.~.~ Particular barrier material
36  DF  .~.~.~ With additional electrode to control conductive state of Josephson junction
37  DF  .~.~ At least one electrode layer of semiconductor material
38  DF  .~.~.~ Three or more electrode device
39  DF  .~.~ Three or more electrode device
40  DF  ORGANIC SEMICONDUCTOR MATERIAL
41  DF  POINT CONTACT DEVICE
42  DF  SEMICONDUCTOR IS SELENIUM OR TELLURIUM IN ELEMENTAL FORM
43  DF  SEMICONDUCTOR IS AN OXIDE OF A METAL (E.G., CuO, ZnO) OR COPPER SULFIDE
44  DF  WITH METAL CONTACT ALLOYED TO ELEMENTAL SEMICONDUCTOR TYPE PN JUNCTION IN NONREGENERATIVE STRUCTURE
45  DF  .~ Elongated alloyed region (e.g., thermal gradient zone melting, TGZM)
46  DF  .~ In pn junction tunnel diode (Esaki diode)
47  DF  .~ In bipolar transistor structure
48  DF  TEST OR CALIBRATION STRUCTURE
49  DF  NON-SINGLE CRYSTAL, OR RECRYSTALLIZED, SEMICONDUCTOR MATERIAL FORMS PART OF ACTIVE JUNCTION (INCLUDING FIELD-INDUCED ACTIVE JUNCTION)
50  DF  .~ Non-single crystal, or recrystallized, active junction adapted to be electrically shorted (e.g., "anti-fuse" element)
51  DF  .~ Non-single crystal, or recrystallized, material forms active junction with single crystal material (e.g., monocrystal to polycrystal pn junction or heterojunction)
52  DF  .~ Amorphous semiconductor material
53  DF  .~.~ Responsive to nonelectrical external signals (e.g., light)
54  DF  .~.~.~ With Schottky barrier to amorphous material
55  DF  .~.~.~ Amorphous semiconductor is alloy or contains material to change band gap (e.g., Si Ge , SiN )
56  DF  .~.~.~ With impurity other than hydrogen to passivate dangling bonds (e.g., halide)
57  DF  .~.~ Field effect device in amorphous semiconductor material
58  DF  .~.~.~ With impurity other than hydrogen to passivate dangling bonds (e.g., halide)
59  DF  .~.~.~ In array having structure for use as imager or display, or with transparent electrode
60  DF  .~.~.~ With field electrode under or on a side edge of amorphous semiconductor material (e.g., vertical current path)
61  DF  .~.~.~ With heavily doped regions contacting amorphous semiconductor material (e.g., heavily doped source and drain)
62  DF  .~.~ With impurity other than hydrogen to passivate dangling bonds (e.g., halide)
63  DF  .~.~ Amorphous semiconductor is alloy or contains material to change band gap (e.g., SixGe1-x, SiNy)
64  DF  .~ Non-single crystal, or recrystallized, material with specified crystal structure (e.g., specified crystal size or orientation)
65  DF  .~ Non-single crystal, or recrystallized, material containing non-dopant additive, or alloy of semiconductor materials (e.g., GexSi1-x, polycrystalline silicon with dangling bond modifier)
66  DF  .~ Field effect device in non-single crystal, or recrystallized, semiconductor material
67  DF  .~.~ In combination with device formed in single crystal semiconductor material (e.g., stacked FETs)
68  DF  .~.~.~ Capacitor element in single crystal semiconductor (e.g., DRAM)
69  DF  .~.~.~ Field effect transistor in single crystal material, complememtary to that in non-single crystal, or recrystallized, material (e.g., CMOS)
70  DF  .~.~.~ Recrystallized semiconductor material
71  DF  .~.~ In combination with capacitor element (e.g., DRAM)
72  DF  .~.~ In array having structure for use as imager or display, or with transparent electrode
73  DF  .~ Schottky barrier to polycrystalline semiconductor material
74  DF  .~ Plural recrystallized semiconductor layers (e.g., "3-dimensional integrated circuit")
75  DF  .~ Recrystallized semiconductor material
76  DF  SPECIFIED WIDE BAND GAP (> 1.5eV) SEMICONDUCTOR MATERIAL OTHER THAN GaAsP OR GaAlAs
77  DF  .~ Diamond or Silicon Carbide
78  DF  .~ II-IV compound
79  DF  INCOHERENT LIGHT EMITTER STRUCTURE
80  DF  .~ In combination with or also constituting light responsive device
81  DF  .~.~ With specific housing or contact structure
82  DF  .~.~.~ Discrete light emitting and light responsive devices
83  DF  .~.~ Light coupled transistor structure
84  DF  .~.~ Combined in integrated structure
85  DF  .~.~.~ With heterojunction
86  DF  .~ Active layer of indirect band gap semiconductor
87  DF  .~.~ With means to facilitate electron-hole recombination (e.g., isoelectronic traps such as nitrogen in GaP)
88  DF  .~ Plural light emitting devices (e.g., matrix, 7-segment array)
89  DF  .~.~ Multi-color emission
90  DF  .~.~.~ With heterojunction
91  DF  .~.~ With shaped contacts or opaque masking
92  DF  .~.~ Alphanumeric segmented array
93  DF  .~.~ With electrical isolation means in integrated circuit structure
94  DF  .~ With heterojunction
95  DF  .~.~ With contoured external surface (e.g., dome shape to facilitate light emission)
96  DF  .~.~ Plural heterojunctions in same device
97  DF  .~.~.~ More than two heterojunctions in same device
98  DF  .~ With reflector, opaque mask, or optical element (e.g., lens, optical fiber, index of refraction matching layer, luminescent material layer, filter) integral with device or device enclosure or package
99  DF  .~ With housing or contact structure
100  DF  .~ Encapsulated
101  DF  .~ With particular dopant concentration or concentration profile (e.g., graded junction)
102  DF  .~ With particular dopant material (e.g., Zinc as dopant in GaAs)
103  DF  .~ With particular semiconductor material
104  DF  TUNNELING PN JUNCTION (E.G., ESAKI DIODE) DEVICE
105  DF  .~ In three or more terminal device
106  DF  .~ Reverse bias tunneling structure (e.g., "backward" diode, true Zener diode)
107  DF  REGENERATIVE TYPE SWITCHING DEVICE (E.G., SCR, COMFET, THYRISTOR)
108  DF  .~ Controlled by nonelectrical, nonoptical external signal (e.g., magnetic field, pressure, thermal)
109  DF  .~ Having only two terminals and no control electrode (gate) (e.g., Shockley diode)
110  DF  .~.~ More than four semiconductor layers of alternating conductivity types (e.g., pnpnpn structure, 5 layer bidirectional diacs, etc.)
111  DF  .~.~ Triggered by VBO overvoltage means
112  DF  .~.~ With highly-doped breakdown diode trigger
113  DF  .~ With light activation
114  DF  .~.~ With separate light dector integrated on chip with regenerative switching device
115  DF  .~.~ With electrical trigger signal amplification means (e.g., amplified gate, "pilot thyristor", etc.)
116  DF  .~.~ With light conductor means (e.g., light fiber or light pipe) integral with device or device enclosure or package
117  DF  .~.~.~ In groove or with thinned semiconductor portion
118  DF  .~.~ With groove or thinned light sensitive portion
119  DF  .~ Bidirectional rectifier with control electrode (gate) (e.g., Triac)
120  DF  .~.~ Six or more semiconductor layers of alternating conductivity types (e.g., npnpnpn structure)
121  DF  .~.~ With diode or transistor in reverse path
122  DF  .~.~ Lateral
123  DF  .~.~ With trigger signal amplification (e.g., amplified gate)
124  DF  .~.~ Combined with field effect transistor structure
125  DF  .~.~.~ Controllable emitter shunting
126  DF  .~.~ With means to separate a device into sections having different conductive polarity
127  DF  .~.~.~ Guard ring or groove
128  DF  .~.~ Having overlapping sections of different conductive polarity
129  DF  .~.~ With means to increase reverse breakdown voltage
130  DF  .~.~ Switching speed enhancement means
131  DF  .~.~.~ Recombination centers or deep level dopants
132  DF  .~ Five or more layer unidirectional structure
133  DF  .~ Combined with field effect transistor
134  DF  .~.~ J-FET (junction field effect transistor)
135  DF  .~.~.~ Vertical (i.e., where the source is located above the drain or vice versa)
136  DF  .~.~.~.~ Enhancement mode (e.g., so-called SITs)
137  DF  .~.~ Having controllable emitter shunt
138  DF  .~.~.~ Having gate turn off (GTO) feature
139  DF  .~.~ With extended latchup current level (e.g., COMFET device)
140  DF  .~.~.~ Combined with other solid state active device in integrated structure
141  DF  .~.~.~ Lateral structure, i.e., current flow parallel to main device surface
142  DF  .~.~.~ Having impurity doping for gain reduction
143  DF  .~.~.~ Having anode shunt means
144  DF  .~.~.~ Cathode emitter or cathode electrode feature
145  DF  .~.~.~ Low impedance channel contact extends below surface
146  DF  .~ Combined with other solid state active device in integrated structure
147  DF  .~ With extended latchup current level (e.g., gate turn off "GTO" device)
148  DF  .~.~ Having impurity doping for gain reduction
149  DF  .~.~ Having anode shunt means
150  DF  .~.~ With specified housing or external terminal
151  DF  .~.~.~ External gate terminal structure or composition
152  DF  .~.~ Cathode emitter or cathode electrode feature
153  DF  .~.~ Gate region or electrode feature
154  DF  .~ With resistive region connecting separate sections of device
155  DF  .~ With switching speed enhancement means (e.g., Schottky contact)
156  DF  .~.~ Having deep level dopants or recombination centers
157  DF  .~ With integrated trigger signal amplification means (e.g., amplified gate, "pilot thyristor", etc.)
158  DF  .~.~ Three or more amplification stages
159  DF  .~.~ Transistor as amplifier
160  DF  .~.~ With distributed amplified current
161  DF  .~.~ With a turn-off diode
162  DF  .~ Lateral structure
163  DF  .~ Emitter region feature
164  DF  .~.~ Multi-emitter region (e.g., emitter geometry or emitter ballast resistor)
165  DF  .~.~.~ Laterally symmetric regions
166  DF  .~.~.~ Radially symmetric regions
167  DF  .~ Having at least four external electrodes
168  DF  .~ With means to increase breakdown voltage
169  DF  .~.~ High resistivity base layer
170  DF  .~.~ Surface feature (e.g., guard ring, groove, mesa)
171  DF  .~.~.~ Edge feature (e.g., beveled edge)
172  DF  .~ With means to lower "ON" voltage drop
173  DF  .~ Device protection (e.g., from overvoltage)
174  DF  .~.~ Rate of rise of current (e.g., dI/dt)
175  DF  .~ With means to control triggering (e.g., gate electrode configuration, zener diode firing, dV/dt control, transient control by ferrite bead, etc.)
176  DF  .~.~ Located in an emitter-gate region
177  DF  .~ With housing or external electrode
178  DF  .~.~ With means to avoid stress between electrode and active device (e.g., thermal expansion matching of electrode to semiconductor)
179  DF  .~.~.~ With malleable electrode (e.g., silver electrode layer)
180  DF  .~.~ Stud mount
181  DF  .~.~ With large area flexible electrodes in press contact with opposite sides of active semiconductor chip and surrounded by an insulating element (e.g., ring)
182  DF  .~.~.~ With lead feedthrough means on side of housing
183  DF  HETEROJUNCTION DEVICE
183.1  DF  .~ Charge transfer device
184  DF  .~ Light responsive structure
185  DF  .~.~ Staircase (including graded composition) device
186  DF  .~.~ Avalanche photodetection structure
187  DF  .~.~ Having transistor structure
188  DF  .~.~ Having narrow energy band gap (<<1eV) layer (e.g., PbSnTe, HgCdTe, etc.)
189  DF  .~.~.~ Layer is a group III-V semiconductor compound
190  DF  .~ With lattice constant mismatch (e.g., with buffer layer to accomodate mismatch)
191  DF  .~ Having graded composition
192  DF  .~ Field effect transistor
194  DF  .~.~ Doping on side of heterojunction with lower carrier affinity (e.g., high electron mobility transistor (HEMT)
195  DF  .~.~.~ Combined with diverse type device
196  DF  .~ Both semiconductors of the heterojunction are the same conductivity type (i.e., either N or P)
197  DF  .~ Bipolar transistor
198  DF  .~.~ Wide band gap emitter
199  DF  .~ Avalanche diode (e.g., so-called "Zener" diode having breakdown voltage greater than 6 volts, including heterojunction IMPATT type microwave diodes)
200  DF  .~ Heterojunction formed between semiconductor materials which differ in that they belong to different periodic table groups (e.g., Ge (group IV) - GaAs (group III-V) or InP (group III-V) - CdTe (group II-VI))
201  DF  .~ Between different group IV-VI or II-VI or III-V compounds other than GaAs/GaAlAs
202  DF  GATE ARRAYS
203  DF  .~ With particular chip input/output means
204  DF  .~ Having specific type of active device (e.g., CMOS)
205  DF  .~.~ With bipolar transistors or with FETs of only one channel conductivity type (e.g., enhancement-depletion FETs)
206  DF  .~.~ Particular layout of complementary FETs with regard to each other
207  DF  .~ With particular power supply distribution means
208  DF  .~ With particular signal path connections
209  DF  .~.~ Programmable signal paths (e.g., with fuse elements, laser programmable, etc.)
210  DF  .~.~ With wiring channel area
211  DF  .~.~ Multi-level metallization
212  DF  CONDUCTIVITY MODULATION DEVICE (E.G., UNIJUNCTION TRANSISTOR, DOUBLE-BASE DIODE, CONDUCTIVITY-MODULATED TRANSISTOR)
213  DF  FIELD EFFECT DEVICE
214  DF  .~ Charge injection device
215  DF  .~ Charge transfer device
216  DF  .~.~ Majority signal carrier (e.g., buried or bulk channel, or peristaltic)
217  DF  .~.~.~ Having a conductive means in direct contact with channel (e.g., non- insulated gate)
218  DF  .~.~.~ High resistivity channel (e.g., accumulation mode) or surface channel (e.g., transfer of signal charge occurs at the surface of the semi-conductor) or minority carriers at input (e.g., surface channel input)
219  DF  .~.~.~ Impurity concentration variation
220  DF  .~.~.~.~ Vertically within channel (e.g., profiled)
221  DF  .~.~.~.~ Along the length of the channel (e.g., doping variations for transfer directionality)
222  DF  .~.~.~ Responsive to non-electrical external signal (e.g., imager)
223  DF  .~.~.~.~ Having structure to improve output signal (e.g., antiblooming drain)
224  DF  .~.~.~ Channel confinement
225  DF  .~.~ Non-electrical input responsive (e.g., light responsive imager, input programmed by size of storage sites for use as a read-only memory, etc.)
226  DF  .~.~.~ Sensor element and charge transfer device are of different materials or on different substrates (e.g., "hybrid")
227  DF  .~.~.~ With specified dopant (e.g., photoionizable, "extrinsic" detectors for infrared)
228  DF  .~.~.~ Light responsive, back illuminated
229  DF  .~.~.~ Having structure to improve output signal (e.g., exposure control structure)
230  DF  .~.~.~.~ With blooming suppression structure
231  DF  .~.~.~ 2-dimensional area architecture
232  DF  .~.~.~.~ Having alternating strips of sensor structures and register structures (e.g., interline imager)
233  DF  .~.~.~.~ Sensors not overlaid by electrode (e.g., photodiodes)
234  DF  .~.~.~ Single strip of sensors (e.g., linear imager)
235  DF  .~.~ Electrical input
236  DF  .~.~.~ Signal applied to field effect electrode
237  DF  .~.~.~.~ Charge-presetting/linear input type (e.g., fill and spill)
238  DF  .~.~.~ Input signal responsive to signal charge in charge transfer device (e.g., regeneration or feedback)
239  DF  .~.~ Signal charge detection type (e.g., floating diffusion or floating gate non-destructive output)
240  DF  .~.~ Changing width or direction of channel (e.g., meandering channel)
241  DF  .~.~ Multiple channels (e.g., converging or diverging or parallel channels)
242  DF  .~.~ Vertical charge transfer
243  DF  .~.~ Channel confinement
244  DF  .~.~ Comprising a groove
245  DF  .~.~ Structure for applying electric field into device (e.g., resistive electrode, acoustic traveling wave in channel)
246  DF  .~.~.~ Phase structure (e.g., doping variations to provide asymmetry for 2-phase operation; more than four phases or "electrode per bit")
247  DF  .~.~.~.~ Uniphase or virtual phase structure
248  DF  .~.~.~.~ 2-phase
249  DF  .~.~.~ Electrode structures or materials
250  DF  .~.~.~.~ Plural gate levels
251  DF  .~.~ Substantially incomplete signal charge transfer (e.g., bucket brigade)
252  DF  .~ Responsive to non-optical, non-electrical signal
253  DF  .~.~ Chemical (e.g., ISFET, CHEMFET)
254  DF  .~.~ Physical deformation (e.g., strain sensor, acoustic wave detector)
255  DF  .~ With current flow along specified crystal axis (e.g., axis of maximum carrier mobility)
256  DF  .~ Junction field effect transistor (unipolar transistor)
257  DF  .~.~ Light responsive or combined with light responsive device
258  DF  .~.~.~ In imaging array
259  DF  .~.~ Elongated active region acts as transmission line or distributed active element (e.g., "transmission line" field effect transistor)
260  DF  .~.~ Same channel controlled by both junction and insulated gate electrodes, or by both Schottky barrier and pn junction gates (e.g., "taper isolated" memory cell)
261  DF  .~.~ Junction gate region free of direct electrical connection (e.g., floating junction gate memory cell structure)
262  DF  .~.~ Combined with insulated gate field effect transistor (IGFET)
263  DF  .~.~ Vertical controlled current path
264  DF  .~.~.~ Enhancement mode or with high resistivity channel (e.g., doping of 1015cm-3 or less)
265  DF  .~.~.~ In integrated circuit
266  DF  .~.~.~ With multiple parallel current paths (e.g., grid gate)
267  DF  .~.~.~.~ With Schottky barrier gate
268  DF  .~.~ Enhancement mode
269  DF  .~.~.~ With means to adjust barrier height (e.g., doping profile)
270  DF  .~.~ Plural, separately connected, gates control same channel region
271  DF  .~.~ Load element or constant current source (e.g., with source to gate connection)
272  DF  .~.~ Junction field effect transistor in integrated circuit
273  DF  .~.~.~ With bipolar device
274  DF  .~.~.~ Complementary junction field effect transistors
275  DF  .~.~.~ Microwave integrated circuit (e.g., microstrip type)
276  DF  .~.~.~.~ With contact or heat sink extending through hole in semiconductor substrate, or with electrode suspended over substrate (e.g., air bridge)
277  DF  .~.~.~.~ With capacitive or inductive elements
278  DF  .~.~.~ With devices vertically spaced in different layers of semiconductor material (e.g., "3-dimensional" integrated circuit)
279  DF  .~.~ Pn junction gate in compound semiconductor material (e.g., GaAs)
280  DF  .~.~ With Schottky gate
281  DF  .~.~.~ Schottky gate to silicon semiconductor
282  DF  .~.~.~ Gate closely aligned to source region
283  DF  .~.~.~.~ With groove or overhang for alignment
284  DF  .~.~.~ Schottky gate in groove
285  DF  .~.~ With profiled channel dopant concentration or profiled gate region dopant concentration (e.g., maximum dopant concentration below surface)
286  DF  .~.~ With non-uniform channel thickness or width
287  DF  .~.~ With multiple channels or chanel segments connected in parallel, or with channel much wider than length between source and drain (e.g., power JFET)
288  DF  .~ Having insulated electrode (e.g., MOSFET, MOS diode)
289  DF  .~.~ Significant semiconductor chemical compound in bulk crystal (e.g., GaAs)
290  DF  .~.~ Light responsive or combined with light responsive device
291  DF  .~.~.~ Imaging array
292  DF  .~.~.~.~ Photodiodes accessed by FETs
293  DF  .~.~.~.~ Photoresistors accessed by FETs, or photodetectors separate from FET chip
294  DF  .~.~.~.~ With shield, filter, or lens
295  DF  .~.~ With ferroelectric material layer
296  DF  .~.~ Insulated gate capacitor or insulated gate transistor combined with capacitor (e.g., dynamic memory cell)
297  DF  .~.~.~ With means for preventing charge leakage due to minority carrier generation (e.g., alpha generated soft error protection or "dark current" leakage protection)
298  DF  .~.~.~ Capacitor for signal storage in combination with non-volatile storage means
299  DF  .~.~.~ Structure configured for voltage converter (e.g., charge pump, substrate bias generator)
300  DF  .~.~.~ Capacitor coupled to, or forms gate of, insulated gate field effect transistor (e.g., nondestructive readout dynamic memory cell structure)
301  DF  .~.~.~ Capacitor in trench
302  DF  .~.~.~.~ Vertical transistor
303  DF  .~.~.~.~ Stacked capacitor
304  DF  .~.~.~.~ Storage node isolated by dielectric from semiconductor substrate
305  DF  .~.~.~.~ With means to insulate adjacent storage nodes (e.g., channel stops or field oxide)
306  DF  .~.~.~ Stacked capacitor
307  DF  .~.~.~.~ Parallel interleaved capacitor electrode pairs (e.g., interdigitized)
308  DF  .~.~.~.~.~ With capacitor electrodes connection portion located centrally thereof (e.g., fin electrodes with central post)
309  DF  .~.~.~.~ With increased effective electrode surface area (e.g., tortuous path, corrugated, or textured electrodes)
310  DF  .~.~.~ With high dielectric constant insulator (e.g., Ta2Os)
311  DF  .~.~.~ Storage node isolated by dielectric from semiconductor substrate
312  DF  .~.~.~ Voltage variable capacitor (i.e., capacitance varies with applied voltage)
313  DF  .~.~.~ Inversion layer capacitor
314  DF  .~.~ Variable threshold (e.g., floating gate memory device)
315  DF  .~.~.~ With floating gate electrode
316  DF  .~.~.~.~ With additional contacted control electrode
317  DF  .~.~.~.~.~ With irregularities on electrode to facilitate charging or discharging of floating electrode
318  DF  .~.~.~.~.~ Additional control electrode is doped region in semiconductor substrate
319  DF  .~.~.~.~.~ Plural additional contacted control electrodes
320  DF  .~.~.~.~.~.~ Separate control electrodes for charging and for discharging floating electrode
321  DF  .~.~.~.~.~ With thin insulator region for charging or discharging floating electrode by quantum mechanical tunneling
322  DF  .~.~.~.~.~ With charging or discharging by control voltage applied to source or drain region (e.g., by avalanche breakdown of drain junction)
323  DF  .~.~.~.~ With means to facilitate light erasure
324  DF  .~.~.~ Multiple insulator layers (e.g., MNOS structure)
325  DF  .~.~.~.~ Non-homogeneous composition insulator layer (e.g., graded composition layer or layer with inclusions)
326  DF  .~.~.~.~ With additional, non-memory control electrode or channel portion (e.g., accessing field effect transistor structure)
327  DF  .~.~ Short channel insulated gate field effect transistor
328  DF  .~.~.~ Vertical channel or double diffused insulated gate field effect device provided with means to protect against excess voltage (e.g., gate protection diode)
329  DF  .~.~.~ Gate controls vertical charge flow portion of channel (e.g., VMOS device)
330  DF  .~.~.~.~ Gate electrode in groove
331  DF  .~.~.~.~.~ Plural gate electrodes or grid shaped gate electrode
332  DF  .~.~.~.~.~ Gate electrode self-aligned with groove
333  DF  .~.~.~.~.~ With thick insulator to reduce gate capacitance in non-channel areas (e.g., thick oxide over source or drain region)
334  DF  .~.~.~.~.~ In integrated circuit structure
335  DF  .~.~.~ Active channel region has a graded dopant concentration decreasing with distance from source region (e.g., double diffused device, DMOS transistor)
336  DF  .~.~.~.~ With lightly doped portion of drain region adjacent channel (e.g., LDD structure)
337  DF  .~.~.~.~ In integrated circuit structure
338  DF  .~.~.~.~.~ With complementary field effect transistor
339  DF  .~.~.~.~ With means to increase breakdown voltage
340  DF  .~.~.~.~ With means (other than self-alignment of the gate electrode) to decrease gate capacitance (e.g., shield electrode)
341  DF  .~.~.~.~ Plural sections connected in parallel (e.g., power MOSFET)
342  DF  .~.~.~.~.~ With means to reduce ON resistance
343  DF  .~.~.~.~ All contacts on same surface (e.g., lateral structure)
344  DF  .~.~.~ With lightly doped portion of drain region adjacent channel (e.g., LDD structure)
345  DF  .~.~.~ With means to prevent sub-surface currents, or with non-uniform channel doping
346  DF  .~.~.~ Gate electrode overlaps the source or drain by no more than depth of source or drain (e.g., self-aligned gate)
347  DF  .~.~ Single crystal semiconductor layer on insulating substrate (SOI)
348  DF  .~.~.~ Depletion mode field effect transistor
349  DF  .~.~.~ With means (e.g., a buried channel stop layer) to prevent leakage current along the interface of the semiconductor layer and the insulating substrate
350  DF  .~.~.~ Insulated electrode device is combined with diverse type device (e.g., complementary MOSFETs, FET with resistor, etc.)
351  DF  .~.~.~.~ Complementary field effect transistor structures only (i.e., not including bipolar transistors, resistors, or other components)
352  DF  .~.~.~ Substrate is single crystal insulator (e.g., sapphire or spinel)
353  DF  .~.~.~.~ Single crystal islands or semiconductor layer containing only one active device
354  DF  .~.~.~.~.~ Including means to eliminate island edge effects (e.g., insulating filling between islands, or channel stop regions in island edges)
355  DF  .~.~ With overvoltage protective means
356  DF  .~.~.~ For protecting against gate insulator breakdown
357  DF  .~.~.~.~ In complementary field effect transistor integrated circuit
358  DF  .~.~.~.~.~ Including resistor element
359  DF  .~.~.~.~.~.~ As thin film structure (e.g., polysilicon resistor)
360  DF  .~.~.~.~ Protection device includes insulated gate transistor structure (e.g., combined with resistor element)
361  DF  .~.~.~.~.~ For operation as bipolar or punchthrough element
362  DF  .~.~.~.~ Punchthrough or bipolar element
363  DF  .~.~.~.~ Including resistor element
364  DF  .~.~ With resistive gate electrode
365  DF  .~.~ With plural, separately connected, gate electrodes in same device
366  DF  .~.~.~ Overlapping gate electrodes
367  DF  .~.~ Insulated gate controlled breakdown of pn junction (e.g., field plate diode)
368  DF  .~.~ Insulated gate field effect transistor in integrated circuit
369  DF  .~.~.~ Complementary insulated gate field effect transistors
370  DF  .~.~.~.~ Combined with bipolar transistor
371  DF  .~.~.~.~ Complementary transistors in wells of opposite conductivity types more heavily doped than the substrate region in which they are formed, e.g., twin wells
372  DF  .~.~.~.~ With means to prevent latchup or parasitic conduction channels
373  DF  .~.~.~.~ With pn junction to collect injected minority carriers to prevent parasitic bipolar transistor action
374  DF  .~.~.~.~.~ Dielectric isolation means (e.g., dielectric layer in vertical grooves)
375  DF  .~.~.~.~.~ With means to reduce substrate spreading resistance (e.g., heavily doped substrate)
376  DF  .~.~.~.~.~ With barrier region of reduced minority carrier lifetime (e.g., heavily doped P+ region to reduce electron minority carrier lifetime, or containing deep level impurity or crystal damage), or with region of high threshold voltage (e.g., heavily doped channel stop region)
377  DF  .~.~.~.~ With polysilicon interconnections to source or drain regions (e.g., polysilicon laminated with silicide)
378  DF  .~.~.~ Combined with bipolar transistor
379  DF  .~.~.~ Combined with passive components (e.g., resistors)
380  DF  .~.~.~.~ Polysilicon resistor
381  DF  .~.~.~.~ With multiple levels of polycrystalline silicon
382  DF  .~.~.~ With contact to source or drain region of refractory material (e.g., polysilicon, tungsten, or silicide)
383  DF  .~.~.~.~ Contact of refractory or platinum group metal (e.g., molybdenum, tungsten, or titanium)
384  DF  .~.~.~.~ Including silicide
385  DF  .~.~.~.~ Multiple polysilicon layers
386  DF  .~.~.~ With means to reduce parasitic capacitance
387  DF  .~.~.~.~ Gate electrode overlaps at least one of source or drain by no more than depth of source or drain (e.g., self-aligned gate)
388  DF  .~.~.~.~.~ Gate electrode consists of refractory or platinum group metal or silicide
389  DF  .~.~.~.~ With thick insulator over source or drain region
390  DF  .~.~.~ Matrix or array of field effect transistors (e.g., array of FETs only some of which are completed, or structure for mask programmed read-only memory (ROM))
391  DF  .~.~.~.~ Selected groups of complete field effect devices having different threshold voltages (e.g., different channel dopant concentrations)
392  DF  .~.~.~ Insulated gate field effect transistors of different threshold voltages in same integrated circuit (e.g., enhancement and depletion mode)
393  DF  .~.~.~ Insulated gate field effect transistor adapted to function as load element for switching insulated gate field effect transistor
394  DF  .~.~.~ With means to prevent parasitic conduction channels
395  DF  .~.~.~.~ Thick insulator portion
396  DF  .~.~.~.~.~ Recessed into semiconductor surface
397  DF  .~.~.~.~.~.~ In vertical-walled groove
398  DF  .~.~.~.~.~.~ Combined with heavily doped channel stop portion
399  DF  .~.~.~.~.~ Combined with heavily doped channel stop portion
400  DF  .~.~.~.~ With heavily doped channel stop portion
401  DF  .~.~.~ With specified physical layout (e.g., ring gate, source/drain regions shared between plural FETs, plural sections connected in parallel to form power MOSFET)
402  DF  .~.~ With permanent threshold adjustment (e.g., depletion mode)
403  DF  .~.~.~ With channel conductivity dopant same type as that of source and drain
404  DF  .~.~.~.~ Non-uniform channel doping
405  DF  .~.~.~ With gate insulator containing specified permanent charge
406  DF  .~.~.~.~ Plural gate insulator layers
407  DF  .~.~.~ With gate electrode of controlled workfunction material (e.g., low workfunction gate material)
408  DF  .~.~ Including lightly doped drain portion adjacent channel (e.g., lightly doped drain, LDD device)
409  DF  .~.~ With means to increase breakdown voltage (e.g., field shield electrode, guard ring, etc.)
410  DF  .~.~ Gate insulator includes material (including air or vacuum) other than SiO2
411  DF  .~.~.~ Composite or layered gate insulator (e.g., mixture such as silicon oxynitride)
412  DF  .~.~ Gate electrode of refractory material (e.g., polysilicon or silicide of a refractory or platinum group metal)
413  DF  .~.~.~ Polysilicon laminated with silicide
414  DF  RESPONSIVE TO NON-ELECTRICAL SIGNAL (E.G., CHEMICAL, STRESS, LIGHT, OR MAGNETIC FIELD SENSORS)
415  DF  .~ Physical deformation
416  DF  .~.~ Acoustic wave
417  DF  .~.~ Strain sensors
418  DF  .~.~.~ With means to concentrate stress
419  DF  .~.~.~.~ With thinned central active portion of semiconductor surrounded by thick insensitive portion (e.g., diaphragm type strain gauge)
420  DF  .~.~ Means to reduce sensitivity to physical deformation
421  DF  .~ Magnetic field
422  DF  .~.~ With magnetic field directing means (e.g., shield, pole piece, etc.)
423  DF  .~.~ Bipolar transistor magnetic field sensor (e.g., lateral bipolar transistor)
424  DF  .~.~ Sensor with region of high carrier recombination (e.g., magnetodiode with carriers deflected to recombination region by magnetic field)
425  DF  .~.~ Magnetic field detector using compound semiconductor material (e.g., GaAs, InSb, etc.)
426  DF  .~.~ Differential output (e.g., with offset ajustment means or with means to reduce temperature sensitivity)
427  DF  .~.~ Magnetic field sensor in integrated circuit (e.g., in bipolar transistor integrated circuit)
428  DF  .~ Electromagnetic or particle radiation
429  DF  .~.~ Charged or elementary particles
430  DF  .~.~.~ With active region having effective impurity concentration less than 1012 atoms/cm3
431  DF  .~.~ Light
432  DF  .~.~.~ With optical element
433  DF  .~.~.~ With housing or encapsulation
434  DF  .~.~.~.~ With window means
435  DF  .~.~.~ With optical shield or mask means
436  DF  .~.~.~ With means for increasing light absorption (e.g., redirection of unabsorbed light)
437  DF  .~.~.~.~ Antireflection coating
438  DF  .~.~.~ Avalanche junction
439  DF  .~.~.~ Containing dopant adapted for photoionization
440  DF  .~.~.~ With different sensor portions responsive to different wavelengths (e.g., color imager)
441  DF  .~.~.~ Narrow band gap semiconductor (<<1 eV) (e.g., PbSnTe)
442  DF  .~.~.~.~ II-VI compound semiconductor (e.g., HgCdTe)
443  DF  .~.~.~ Matrix or array (e.g., single line arrays)
444  DF  .~.~.~.~ Light sensor elements overlie active switching elements in integrated circuit (e.g., where the sensor elements are deposited on an integrated circuit)
445  DF  .~.~.~.~ With antiblooming means
446  DF  .~.~.~.~ With specific isolation means in intgrated circuit
447  DF  .~.~.~.~ With backside illumination (e.g., having a thinned central area or a non-absorbing substrate)
448  DF  .~.~.~.~ With particular electrode configuration
449  DF  .~.~.~ Schottky barrier (e.g., a transparent Schottky metallic layer or a Schottky barrier containing at least one of indium or tin (e.g., SnO2, indium tin oxide))
450  DF  .~.~.~.~ With doping profile to adjust barrier height
451  DF  .~.~.~.~ Responsive to light having lower energy (i.e., longer wavelength) than forbidden band gap energy of semiconductor (e.g., by excitation of carriers from metal into semiconductor)
452  DF  .~.~.~.~ With edge protection, e.g., doped guard ring or mesa structure
453  DF  .~.~.~.~ With specified Schottky metallic layer
454  DF  .~.~.~.~.~ Schottky metallic layer is a silicide
455  DF  .~.~.~.~.~.~ Silicide of Platinum group metal
456  DF  .~.~.~.~.~.~ Silicide of refractory metal
457  DF  .~.~.~.~ With particular contact geometry (e.g., ring or grid)
458  DF  .~.~.~ PIN detector, including combinations with non-light responsive active devices
459  DF  .~.~.~ With particular contact geometry (e.g., ring or grid, or bonding pad arrangement)
460  DF  .~.~.~ With backside illumination (e.g., with a thinned central area or non-absorbing substrate)
461  DF  .~.~.~ Light responsive pn junction
462  DF  .~.~.~.~ Phototransistor
463  DF  .~.~.~.~ With particular doping concentration
464  DF  .~.~.~.~ With particular layer thickness (e.g., layer less than light absorption depth)
465  DF  .~.~.~.~ Geometric configuration of junction (e.g., fingers)
466  DF  .~.~.~ External physical configuration of semiconductor (e.g., mesas, grooves)
467  DF  .~ Temperature
468  DF  .~.~ Semiconductor device operated at cryogenic temperature
469  DF  .~.~ With means to reduce temperature sensitivity (e.g., reduction of temperature sensitivity of junction breakdown voltage by using a compensating element)
470  DF  .~.~ Pn junction adapted as temperature sensor
471  DF  SCHOTTKY BARRIER
472  DF  .~ To compound semiconductor
473  DF  .~.~ With specified Schottky metal
474  DF  .~ As active junction in bipolar transistor (e.g., Schottky collector)
475  DF  .~ With doping profile to adjust barrier height
476  DF  .~ In integrated structure
477  DF  .~.~ With bipolar transistor
478  DF  .~.~.~ Plural Schottky barriers with different barrier heights
479  DF  .~.~.~ Connected across base-collector junction of transistor (e.g., Baker clamp)
480  DF  .~ In voltage variable capacitance diode
481  DF  .~ Avalanche diode (e.g., so-called "Zener" diode having breakdown voltage greater than 6 volts)
482  DF  .~.~ Microwave transit time device (e.g., IMPATT diode)
483  DF  .~ With means to prevent edge breakdown
484  DF  .~.~ Guard ring
485  DF  .~ Specified materials
486  DF  .~.~ Layered (e.g., a diffusion barrier material layer or a silicide layer or a precious metal layer)
487  DF  WITH MEANS TO INCREASE BREAKDOWN VOLTAGE THRESHOLD
488  DF  .~ Field relief electrode
489  DF  .~.~ Resistive
490  DF  .~.~ Combined with floating pn junction guard region
491  DF  .~ In integrated circuit
492  DF  .~.~ With electric field controlling semiconductor layer having a low enough doping level in relationship to its thickness to be fully depleted prior to avalanche breakdown (e.g., RESURF devices)
493  DF  .~ With electric field controlling semiconductor layer having a low enough doping level in relationship to its thickness to be fully depleted prior to avalanche breakdown (e.g., RESURF devices)
494  DF  .~ Reverse-biased pn junction guard region
495  DF  .~ Floating pn junction guard region
496  DF  .~ With physical configuration of semiconductor surface to reduce electric field (e.g., reverse bevels, double bevels, stepped mesas, etc.)
497  DF  PUNCHTHROUGH STRUCTURE DEVICE (E.G., PUNCHTHROUGH TRANSISTOR, CAMEL BARRIER DIODE)
498  DF  .~ Punchthrough region fully depleted at zero external applied bias voltage (e.g., camel barrier or planar doped barrier devices, or so-called "bipolar SIT" devices)
499  DF  INTEGRATED CIRCUIT STRUCTURE WITH ELECTRICALLY ISOLATED COMPONENTS
500  DF  .~ Including high voltage or high power devices isolated from low voltage or low power devices in the same integrated circuit
501  DF  .~.~ Including dielectric isolation means
502  DF  .~.~ High power or high voltage device extends completely through semiconductor substrate (e.g., backside collector contact)
503  DF  .~ With contact or metallization configuration to reduce parasitic coupling (e.g., separate ground pads for different parts of integrated circuit)
504  DF  .~ Including means for establishing a depletion region throughout a semi- conductor layer for isolating devices in different portions of the layer (e.g., "JFET" isolation)
505  DF  .~ With polycrystalline semiconductor isolation region in direct contact with single crystal active semiconductor material
506  DF  .~ Including dielectric isolation means
507  DF  .~.~ With single crystal insulating substrate (e.g., sapphire)
508  DF  .~.~ With metallic conductor within isolating dielectric or between semiconductor and isolating dielectric (e.g., metal shield layer or internal connection layer)
509  DF  .~.~ Combined with pn junction isolation (e.g., isoplanar, LOCOS)
510  DF  .~.~.~ Dielectric in groove
511  DF  .~.~.~.~ With complementary (npn and pnp) bipolar transistor structures)
512  DF  .~.~.~.~.~ Complementary devices share common active region (e.g., integrated injection logic, I2L)
513  DF  .~.~.~.~ Vertical walled groove
514  DF  .~.~.~.~.~ With active junction abutting groove (e.g., "walled emitter")
515  DF  .~.~.~.~ With active junction abutting groove (e.g., "walled emitter")
516  DF  .~.~.~.~ With passive component (e.g., resistor, capacitor, etc.)
517  DF  .~.~.~.~ With bipolar transistor structure
518  DF  .~.~.~.~.~ With polycrystalline connecting region (e.g., polysilicon base contact)
519  DF  .~.~.~.~ Including heavily doped channel stop region adjacent groove
520  DF  .~.~.~.~ Conductive filling in dielectric-lined groove (e.g., polysilicon backfill)
521  DF  .~.~.~.~ Sides of grooves along major crystal planes (e.g., (111), (100) planes, etc.)
522  DF  .~.~ Air isolation (e.g., beam lead supported semiconductor islands)
523  DF  .~.~ Isolation by region of intrinsic (undoped) semiconductor material (e.g., including region physically damaged by proton bombardment)
524  DF  .~.~ Full dielectric isolation with polycrystalline semiconductor substrate
525  DF  .~.~.~ With complementary (npn and pnp) bipolar transistor structures
526  DF  .~.~ With bipolar transistor structure
527  DF  .~.~.~ Sides of isolated semiconductor islands along major crystal planes (e.g., (111), (100) planes, etc.)
528  DF  .~ Passive components in ICs
529  DF  .~.~ Including programmable passive component (e.g., fuse)
530  DF  .~.~.~ Anti-fuse
531  DF  .~.~ Including inductive element
532  DF  .~.~ Including capacitor component
533  DF  .~.~.~ Combined with resistor to form RC filter structure
534  DF  .~.~.~ With means to increase surface area (e.g., grooves, ridges, etc.)
535  DF  .~.~.~ Both terminals of capacitor isolated from substrate
536  DF  .~.~ Including resistive element
537  DF  .~.~.~ Using specific resistive material
538  DF  .~.~.~.~ Polycrystalline silicon (doped or undoped)
539  DF  .~.~.~ Combined with bipolar transistor
540  DF  .~.~.~.~ With compensation for non-linearity (e.g., dynamic isolation pocket bias)
541  DF  .~.~.~.~ Pinch resistor
542  DF  .~.~.~.~ Resistor has same doping as emitter or collector of bipolar transistor
543  DF  .~.~.~.~ Lightly doped junction isolated resistor (e.g., ion implanted resistor)
544  DF  .~ With pn junction isolation
545  DF  .~.~ With means to control isolation junction capacitance (e.g., lightly doped layer at isolation junction to increase depletion layer width)
546  DF  .~.~ With structural means to protect against excess or reversed polarity voltage
547  DF  .~.~ With structural means to control parasitic transistor action or leakage current
548  DF  .~.~ At least three regions of alternating conductivity types with dopant concentration gradients decreasing from surface of semiconductor (e.g., "triple-diffused" integrated circuit)
549  DF  .~.~ With substrate and lightly doped surface layer of same conductivity type, separated by subsurface heavily doped region of opposite conductivity type (e.g., "collector diffused isolation" integrated circuit)
550  DF  .~.~ With lightly doped surface layer of one conductivity type on substrate of opposite conductivity type, having plural heavily doped portions of the one conductivity type between the layer and substrate, different ones of the heavily doped portions having differing depths or physical extent
551  DF  .~.~ Including voltage reference element (e.g., avalanche diode, so-called "Zener diode" with breakdown voltage greater than 6 volts or with positive temperature coefficient of breakdown voltage)
552  DF  .~.~ With bipolar transistor structure
553  DF  .~.~.~ Transistors of same conductivity type (e.g., npn) having different current gain or different operating voltage characteristics
554  DF  .~.~.~ With connecting region made of polycrystalline semiconductor material (e.g., polysilicon base contact)
555  DF  .~.~.~ Complementary bipolar transistor structures (e.g., integrated injection logic, I2L)
556  DF  .~.~.~.~ Including lateral bipolar transistor structure
557  DF  .~ Lateral bipolar transistor structure
558  DF  .~.~ With base region doping concentration step or gradient or with means to increase current gain
559  DF  .~.~ With active region formed along groove or exposed edge in semiconductor
560  DF  .~.~ With multiple collectors or emitters
561  DF  .~.~.~ With different emitter to collector spacings or facing areas
562  DF  .~.~.~ With auxiliary collector/re-emitter between emitter and output collector (e.g., "current hogging logic" device)
563  DF  .~ With multiple separately connected emitter, collector, or base regions in same transistor structure
564  DF  .~.~ Multipe base or collector regions
565  DF  BIPOLAR TRANSISTOR STRUCTURE
566  DF  .~ Plural non-isolated transistor structures in same structure
567  DF  .~.~ Darlington configuration (i.e., emitter to collector current of input transistor supplied to base region of output transistor)
568  DF  .~.~.~ More than two Darlington-connected transistors
569  DF  .~.~.~ Complementary Darlington-connected transistors
570  DF  .~.~.~ With active components in addition to Darlington transistors (e.g., antisaturation diode, bleeder diode connected antiparallel to input transistor base-emitter junction, etc.)
571  DF  .~.~.~ Non-planar structure (e.g., mesa emitter, or having a groove to define resistor)
572  DF  .~.~.~ With resistance means connected between transistor base regions
573  DF  .~.~.~ With housing or contact structure or configuration
574  DF  .~.~ Complementary transistors share common active region (e.g., integrated injection logic I2L)
575  DF  .~.~.~ Including lateral bipolar transistor structure
576  DF  .~.~.~.~ With contacts of refractory material (e.g., polysilicon, silicide of refractory or platinum group metal)
577  DF  .~ Including additional component in same, non-isolated structure (e.g., transistor with diode, transistor with resistor, etc.)
578  DF  .~ With enlarged emitter area (e.g., power device)
579  DF  .~.~ With separate emitter areas connected in parallel
580  DF  .~.~.~ With current ballasting means (e.g., emitter ballasting resistors or base current ballasting means)
581  DF  .~.~.~.~ Thin film ballasting means (e.g., polysilicon resistor)
582  DF  .~.~ With current ballasting means (e.g., emitter ballasting resistors or base current ballasting resistors)
583  DF  .~.~ With means to reduce transistor action in selected portions of transistor (e.g., heavy base region doping under central web of emitter to prevent secondary breakdown)
584  DF  .~.~ With housing or contact (i.e., electrode) means
585  DF  .~ With means to increase inverse gain
586  DF  .~ With non-planar semiconductor surface (e.g., groove, mesa, bevel, etc.)
587  DF  .~ With specified electrode means
588  DF  .~.~ Including polycrystalline semiconductor as connection
589  DF  .~ Avalanche transistor
590  DF  .~ With means to reduce minority carrier lifetime (e.g., region of deep level dopant or region of crystal damage)
591  DF  .~ With emitter region having specified doping concentration profile (e.g., high-low concentration step)
592  DF  .~ With base region having specified doping concentration profile or specified configuration (e.g., inactive base more heavily doped than active base or base region has constant doping concentration portion (e.g., epitaxial base))
593  DF  .~ With means to increase current gain or operating frequency
594  DF  WITH GROOVE TO DEFINE PLURAL DIODES
595  DF  VOLTAGE VARIABLE CAPACITANCE DEVICE
596  DF  .~ With specified dopant profile
597  DF  .~.~ Retrograde dopant profile (e.g., dopant concentration decreases with distance from rectifying junction)
598  DF  .~ With plural junctions whose depletion regions merge to vary voltage dependence
599  DF  .~ With means to increase active junction area (e.g., grooved or convoluted surface)
600  DF  .~ With physical configuration to vary voltage dependence (e.g., mesa)
601  DF  .~ Plural diodes in same non-isolated structure, or device having three or more terminals
602  DF  .~ With specified housing or contact
603  DF  AVALANCHE DIODE (E.G., SO-CALLED "ZENER" DIODE HAVING BREAKDOWN VOLTAGE GREATER THAN 6 VOLTS)
604  DF  .~ Microwave transit time device (e.g., IMPATT diode)
605  DF  .~ With means to limit area of breakdown (e.g., guard ring having higher breakdown voltage)
606  DF  .~.~ Subsurface breakdown
607  DF  WITH SPECIFIED DOPANT (E.G., PLURAL DOPANTS OF SAME CONDUCTIVITY IN SAME REGION)
608  DF  .~ Switching device based on filling and emptying of deep energy levels
609  DF  .~ For compound semiconductor (e.g., deep level dopant)
610  DF  .~ Deep level dopant
611  DF  .~.~ With specified distribution (e.g., laterally localized, with specified concentration distribution or gradient)
612  DF  .~.~ Deep level dopant other than gold or platinum
613  DF  INCLUDING SEMICONDUCTOR MATERIAL OTHER THAN SILICON OR GALLIUM ARSENIDE (GaAs) (E.G., PbxSn1-xTe)
614  DF  .~ Group II-VI compound (e.g., CdTe, HgxCd1-xTe)
615  DF  .~ Group III-V compound (e.g., InP)
616  DF  .~ Containing germanium, Ge
617  DF  INCLUDING REGION CONTAINING CRYSTAL DAMAGE
618  DF  PHYSICAL CONFIGURATION OF SEMICONDUCTOR (E.G., MESA, BEVEL, GROOVE, ETC.)
619  DF  .~ With thin active central semiconductor portion surrounded by thicker inactive shoulder (e.g., for mechanical support)
620  DF  .~ With peripheral feature due to separation of smaller semiconductor chip from larger wafer (e.g., scribe region, or means to prevent edge effects such as leakage current at peripheral chip separation area)
621  DF  .~ With electrical contact in hole in semiconductor (e.g., lead extends through semiconductor body)
622  DF  .~ Groove
623  DF  .~ Mesa structure (e.g., including undercut or stepped mesa configuration or having constant slope taper)
624  DF  .~.~ With low resistance ohmic connection means along exposed mesa edge (e.g., contact or heavily doped region along exposed mesa to reduce "skin effect" losses in microwave diode)
625  DF  .~.~ Semiconductor body including mesa is intimately bonded to thick electrical and/or thermal conductor member of larger lateral extent than semiconductor body (e.g., "plated heat sink" microwave diode)
626  DF  .~.~ Combined with passivating coating
627  DF  .~ With specified crystal plane or axis
628  DF  .~.~ Major crystal plane or axis other than (100), (110), or (111) (e.g., (731) axis, crystal plane several degrees from (100) toward (011), etc.)
629  DF  WITH MEANS TO CONTROL SURFACE EFFECTS
630  DF  .~ With inversion-preventing shield electrode
631  DF  .~ In compound semiconductor material (e.g., GaAs)
632  DF  .~ Insulating coating
633  DF  .~.~ With thermal expansion compensation (e.g., thermal expansion of glass passivant matched to that of semiconductor)
634  DF  .~.~ Insulating coating of glass composition containing component to adjust melting or softening temperature (e.g., low melting point glass)
635  DF  .~.~ Multiple layers
636  DF  .~.~.~ At least one layer of semi-insulating material
637  DF  .~.~.~ Three or more insulating layers
638  DF  .~.~.~ With discontinuous or varying thickness layer (e.g., layer covers only selected portions of semiconductor)
639  DF  .~.~.~ At least one layer of silicon oxynitride
640  DF  .~.~.~ At least one layer of silicon nitride
641  DF  .~.~.~.~ Combined with glass layer
642  DF  .~.~.~ At least one layer of organic material
643  DF  .~.~.~.~ Polyimide or polyamide
644  DF  .~.~.~ At least one layer of glass
645  DF  .~.~.~ Insulating layer containing specified electrical charge (e.g., net negative electrical charge)
646  DF  .~.~ Coating of semi-insulating material (e.g., amorphous silicon or silicon-rich silicon oxide)
647  DF  .~.~ Insulating layer recessed into semiconductor surface (e.g., LOCOS oxide)
648  DF  .~.~.~ Combined with channel stop region in semiconductor
649  DF  .~.~ Insulating layer of silicon nitride or silicon oxynitride
650  DF  .~.~ Insulating layer of glass
651  DF  .~.~ Details of insulating layer electrical charge (e.g., negative insulator layer charge)
652  DF  .~ Channel stop layer
653  DF  WITH SPECIFIED SHAPE OF PN JUNCTION
654  DF  .~ Interdigitated pn junction or more heavily doped side of junction is concave
655  DF  WITH SPECIFIED IMPURITY CONCENTRATION GRADIENT
656  DF  .~ With high resistivity (e.g., "intrinsic") layer between p and n layers (e.g., PIN diode)
657  DF  .~ Stepped profile
658  DF  PLATE TYPE RECTIFIER ARRAY
659  DF  WITH SHIELDING (E.G., ELECTRICAL OR MAGNETIC SHIELDING, OR FROM ELECTROMAGNETIC RADIATION OR CHARGE PARTICLES)
660  DF  .~ With means to shield device contained in housing or package from charged particles (e.g., alpha particles) or highly ionizing radiation (i.e., hard X-rays or shorter wavelength)
661  DF  SUPERCONDUCTIVE CONTACT OR LEAD
662  DF  .~ Transmission line or shielded
663  DF  .~ On integrated circuit
664  DF  TRANSMISSION LINE LEAD (E.G., STRIPLINE, COAX, ETC.)
665  DF  CONTACTS OR LEADS INCLUDING FUSIBLE LINK MEANS OR NOISE SUPPRESSION MEANS
666  DF  LEAD FRAME
667  DF  .~ With dam or vent for encapsulant
668  DF  .~ On insulating carrier other than a printed circuit board
669  DF  .~ With stress relief
670  DF  .~ With separate tie bar element or plural tie bars
671  DF  .~.~ Of insulating material
672  DF  .~ Small lead frame (e.g., "spider" frame) for connecting a large lead frame to a semiconductor chip
673  DF  .~ With bumps on ends of lead fingers to connect to semiconductor
674  DF  .~ With means for controlling lead tension
675  DF  .~ With heat sink means
676  DF  .~ With structure for mounting semiconductor chip to lead frame (e.g., configuration of die bonding flag, absence of a die bonding flag, recess for LED)
677  DF  .~ Of specified material other than copper (e.g., Kovar (T.M.))
678  DF  HOUSING OR PACKAGE
679  DF  .~ Smart (e.g., credit) card package
680  DF  .~ With window means
681  DF  .~.~ For erasing EPROM
682  DF  .~ With desiccant, getter, or gas filling
683  DF  .~ With means to prevent explosion of package
684  DF  .~ With semiconductor element forming part (e.g., base, of housing)
685  DF  .~ Multiple housings
686  DF  .~.~ Stacked arrangement
687  DF  .~ Housing or package filled with solid or liquid electrically insulating material
688  DF  .~ With large area flexible electrodes in press contact with opposite sides of active semiconductor chip and surrounded by an insulating element (e.g., ring)
689  DF  .~.~ Rigid electrode portion
690  DF  .~ With contact or lead
691  DF  .~.~ Having power distribution means (e.g., bus structure)
692  DF  .~.~ With particular lead geometry
693  DF  .~.~.~ External connection to housing
694  DF  .~.~.~.~ Axial leads
695  DF  .~.~.~.~ Fanned/radial leads
696  DF  .~.~.~.~ Bent (e.g., J-shaped) lead
697  DF  .~.~.~.~ Pin grid type
698  DF  .~.~ With specific electrical feedthrough structure
699  DF  .~.~.~ Housing entirely of metal except for feedthrough structure
700  DF  .~.~ Multiple contact layers separated from each other by insulator means and forming part of a package of housing (e.g., plural ceramic layer package)
701  DF  .~ Insulating material
702  DF  .~.~ Of insulating material other than ceramic
703  DF  .~.~ Composite ceramic, or single ceramic with metal
704  DF  .~.~ Cap or lid
705  DF  .~.~ Of high thermal conductivity ceramic (e.g., BeO)
706  DF  .~.~ With heat sink
707  DF  .~.~.~ Directly attached to semiconductor device
708  DF  .~ Entirely of metal except for feedthrough
709  DF  .~.~ With specified insulator to isolate device from housing
710  DF  .~.~ With specified means (e.g., lip) to seal base to cap
711  DF  .~.~ With raised portion of base for mounting semiconductor chip
712  DF  .~ With provision for cooling the housing or its contents
713  DF  .~.~ For integrated circuit
714  DF  .~.~ Liquid coolant
715  DF  .~.~.~ Boiling (evaporative) liquid
716  DF  .~.~.~ Cryogenic liquid coolant
717  DF  .~.~ Isolation of cooling means (e.g., heat sink) by an electrically insulating element (e.g., spacer)
718  DF  .~.~ Heat dissipating element held in place by clamping or spring means
719  DF  .~.~.~ Pressed against semiconductor element
720  DF  .~.~ Heat dissipating element has high thermal conductivity insert (e.g., copper slug in aluminum heat sink)
721  DF  .~.~ With gas coolant
722  DF  .~.~.~ With fins
723  DF  .~ For plural devices
724  DF  .~.~ With discrete components
725  DF  .~.~ With electrical isolation means
726  DF  .~.~.~ Devices held in place by clamping
727  DF  .~ Device held in place by clamping
728  DF  .~ For high frequency (e.g., microwave) device
729  DF  .~ Portion of housing of specific materials
730  DF  .~ Outside periphery of package having specified shape or configuration
731  DF  .~ With housing mount
732  DF  .~.~ Flanged mount
733  DF  .~.~ Stud mount
734  DF  COMBINED WITH ELECTRICAL CONTACT OR LEAD
735  DF  .~ Beam leads (i.e., leads that extend beyond the ends or sides of a chip component)
736  DF  .~.~ Layered
737  DF  .~ Bump leads
738  DF  .~.~ Ball shaped
739  DF  .~ With textured surface
740  DF  .~ With means to prevent contact from penetrating shallow pn junction (e.g., prevention of aluminum "spiking")
741  DF  .~ Of specified material other than unalloyed aluminum
742  DF  .~.~ With a semiconductor conductivity substitution type dopant (e.g., germanium in the case of a gallium arsenide semiconductor) in a contact metal
743  DF  .~.~.~ For compound semiconductor contact material
744  DF  .~.~ For compound semiconductor material
745  DF  .~.~.~ Contact for III-V material
746  DF  .~.~ Composite material (e.g., fibers or strands embedded in solid matrix)
747  DF  .~.~ With thermal expansion matching of contact or lead material to semiconductor active device
748  DF  .~.~.~ Plural layers of specified contact or lead material
749  DF  .~.~ At least portion of which is transparent to ultraviolet, visible or infrared light
750  DF  .~.~ Layered
751  DF  .~.~.~ At least one layer forms a diffusion barrier
752  DF  .~.~.~ Planarized to top of insulating layer
753  DF  .~.~.~ With adhesion promoting means (e.g., layer of material) to promote adhesion of contact to an insulating layer
754  DF  .~.~.~ At least one layer of silicide or polycrystalline silicon
755  DF  .~.~.~.~ Polysilicon laminated with silicide
756  DF  .~.~.~.~ Multiple polysilicon layers
757  DF  .~.~.~.~ Silicide of refractory or platinum group metal
758  DF  .~.~.~ Multiple metal levels on semiconductor, separated by insulating layer (e.g., multiple level metallization for integrated circuit)
759  DF  .~.~.~.~ Including organic insulating material between metal levels
760  DF  .~.~.~.~ Separating insulating layer is laminate or composite of plural insulating materials (e.g., silicon oxide on silicon nitride, silicon oxynitride)
761  DF  .~.~.~ At least one layer containing vanadium, hafnium, niobium, zirconium, or tantalum
762  DF  .~.~.~ At least one layer containing silver or copper
763  DF  .~.~.~ At least one layer of molybdenum, titanium, or tungsten
764  DF  .~.~.~.~ Alloy containing molybdenum, titanium, or tungsten
765  DF  .~.~.~ At least one layer of an alloy containing aluminum
766  DF  .~.~.~ At least one layer containing chromium or nickel
767  DF  .~.~ Resistive to electromigration or diffusion of the contact or lead material
768  DF  .~.~ Refractory or platinum group metal or alloy or silicide thereof
769  DF  .~.~.~ Platinum group metal or silicide thereof
770  DF  .~.~.~ Molybdenum, tungsten, or titanium or their silicides
771  DF  .~.~ Alloy containing aluminum
772  DF  .~.~ Solder composition
773  DF  .~ Of specified configuration
774  DF  .~.~ Via (interconnection hole) shape
775  DF  .~.~ Varying width or thickness of conductor
776  DF  .~.~ Cross-over arrangement, component or structure
777  DF  .~ Chip mounted on chip
778  DF  .~ Flip chip
779  DF  .~ Solder wettable contact, lead or bond
780  DF  .~ Ball or nail head type contact, lead or bond
781  DF  .~.~ Layered contact, lead or bond
782  DF  .~ Die bond
783  DF  .~.~ With adhesive means
784  DF  .~ Wire contact, lead or bond
785  DF  .~ By pressure alone
786  DF  .~ Configuration or pattern of bonds
787  DF  ENCAPSULATED
788  DF  .~ With specified encapsulant
789  DF  .~.~ With specified filler material
790  DF  .~.~ Plural encapsulating layers
791  DF  .~.~ Including polysiloxane (e.g., silicone resin)
792  DF  .~.~ Including polyimide
793  DF  .~.~ Including epoxide
794  DF  .~.~ Including glass
795  DF  .~ With specified filler material
796  DF  .~ With heat sink embedded in encapsulant
797  DF  ALIGNMENT MARKS
798  DF  MISCELLANEOUS
******************************
CROSS-REFERENCE ART COLLECTIONS
******************************
900  DF  MOSFET TYPE GATE SIDEWALL INSULATING SPACER
901  DF  MOSFET SUBSTRATE BIAS
902  DF  FET WITH METAL SOURCE REGION
903  DF  FET CONFIGURATION ADAPTED FOR USE AS STATIC MEMORY CELL
904  DF  .~ With passive components (e.g., polysilicon resistors)
905  DF  PLURAL DRAM CELLS SHARE COMMON CONTACT OR COMMON TRENCH
906  DF  DRAM WITH CAPACITOR ELECTRODES USED FOR ACCESSING (E.G., BIT LINE IS CAPACITOR PLATE)
907  DF  FOLDED BIT LINE DRAM CONFIGURATION
908  DF  DRAM CONFIGURATION WITH TRANSISTORS AND CAPACITORS OF PAIRS OF CELLS ALONG A STRAIGHT LINE BETWEEN ADJACENT BIT LINES
909  DF  MACROCELL ARRAYS (E.G., GATE ARRAYS WITH VARIABLE SIZE OR CONFIGURATION OF CELLS)
910  DF  DIODE ARRAYS (E.G., DIODE READ-ONLY MEMORY ARRAY)
911  DF  LIGHT SENSITIVE ARRAY ADAPTED TO BE SCANNED BY ELECTRON BEAM (E.G., VIDICON DEVICE)
912  DF  CHARGE TRANSFER DEVICE USING BOTH ELECTRON AND HOLE SIGNAL CARRIERS
913  DF  WITH MEANS TO ABSORB OR LOCALIZE UNWANTED IMPURITIES OR DEFECTS FROM SEMICONDUCTORS (E.G., HEAVY METAL GETTERING)
914  DF  POLYSILICON CONTAINING OXYGEN, NITROGEN, OR CARBON (E.G., SIPOS)
915  DF  WITH TITANIUM NITRIDE PORTION OR REGION
916  DF  NARROW BAND GAP SEMICONDUCTOR MATERIAL (<< 1eV)
917  DF  PLURAL DOPANTS OF SAME CONDUCTIVITY TYPE IN SAME REGION
918  DF  LIGHT EMITTING REGENERATIVE SWITCHING DEVICE (E.G., LIGHT EMITTING SCR) ARRAYS, CIRCUITRY, ETC.
919  DF  ELEMENTS OF SIMILAR CONSTRUCTION CONNECTED IN SERIES OR PARALLEL TO AVERAGE OUT MANUFACTURING VARIATIONS IN CHARACTERISTICS
920  DF  CONDUCTOR LAYERS ON DIFFERENT LEVELS CONNECTED IN PARALLEL (E.G., TO REDUCE RESISTANCE)
921  DF  RADIATION HARDENED SEMICONDUCTOR DEVICE
922  DF  WITH MEANS TO PREVENT INSPECTION OF OR TAMPERING WITH AN INTEGRATED CIRCUIT (E.G., "SMART CARD" ANTI-TAMPER)
923  DF  WITH MEANS TO OPTIMIZE ELECTRICAL CONDUCTOR CURRENT CARRYING CAPACITY (E.G., PARTICULAR CONDUCTOR ASPECT RATIO)
924  DF  WITH PASSIVE DEVICE (E.G., CAPACITOR), OR BATTERY AS INTEGRAL PART OF HOUSING OR HOUSING ELEMENT (E.G., CAP)
925  DF  BRIDGE RECTIFIER MODULE
926  DF  ELONGATED LEAD EXTENDING AXIALLY THROUGH ANOTHER ELONGATED LEAD
927  DF  DIFFERENT DOPING LEVELS IN DIFFERENT PARTS OF PN JUNCTION TO PRODUCE SHAPED DEPLETION LAYER
928  DF  WITH SHORTED PN OR SCHOTTKY JUNCTION OTHER THAN EMITTER JUNCTION
929  DF  PN JUNCTION ISOLATED INTEGRATED CIRCUIT WITH ISOLATION WALLS HAVING MINIMUM DOPANT CONCENTRATION AT INTERMEDIATE DEPTH IN EPITAXIAL LAYER (E.G., DIFFUSED FROM BOTH SURFACES OF EPITAXIAL LAYER)
930  DF  THERMOELECTRIC (E.G., PELTIER EFFECT) COOLING