US PATENT SUBCLASS 438 / 642
.~.~.~ Diverse conductors


Current as of: June, 1999
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438 /   HD   SEMICONDUCTOR DEVICE MANUFACTURING: PROCESS

584  DF  COATING WITH ELECTRICALLY OR THERMALLY CONDUCTIVE MATERIAL {2}
597  DF  .~ To form ohmic contact to semiconductive material {24}
618  DF  .~.~ Contacting multiple semiconductive regions (i.e., interconnects) {5}
642.~.~.~ Diverse conductors {6}
643  DF  .~.~.~.~> At least one layer forms a diffusion barrier
644  DF  .~.~.~.~> Having adhesion promoting layer
645  DF  .~.~.~.~> Having planarization step {1}
647  DF  .~.~.~.~> Having electrically conductive polysilicon component
648  DF  .~.~.~.~> Having refractory group metal (i.e., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), or alloy thereof) {1}
650  DF  .~.~.~.~> Having noble group metal (i.e., silver (Ag), gold (Au), platinum (Pt), palladium (Pd), rhodium (Rh), ruthenium (Ru), iridium (Ir), osmium (Os), or alloy thereof) {1}


DEFINITION

Classification: 438/642

Diverse conductors:

(under subclass 618) Processes wherein the electrically conductive pathway contacting multiple semiconductive regions is composed of plural conductive layers of differing composition or electrical characteristics.