US PATENT SUBCLASS 257 / 228
.~.~.~ Light responsive, back illuminated

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

213  DF  FIELD EFFECT DEVICE {6}
215  DF  .~ Charge transfer device {11}
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.) {6}
228.~.~.~ Light responsive, back illuminated

DEFINITION

Classification: 257/228

Light responsive, back illuminated:

(under subclass 225) Subject matter wherein the non-electrical input responsive device has two major opposed surfaces, the channel containing the charge carrier storage sites being at or below one surface, and wherein the device is responsive to light which is incident on the other major surface.