US PATENT SUBCLASS 257 / 622
.~ Groove


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

618  DF  PHYSICAL CONFIGURATION OF SEMICONDUCTOR (E.G., MESA, BEVEL, GROOVE, ETC.) {6}
622.~ Groove


DEFINITION

Classification: 257/622

Groove:

(under subclass 618) Subject matter in which there is a physical groove in a surface of the semiconductor device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

117, and 118, for light activated regenerative type devices having a groove, e.g., that contains a light conductor.

127, for a bidirectional rectifier with control electrode and a groove or guard ring to separate the device into sections having different conductive polarity.

170, for a regenerative type device with a groove or other surface feature to increase breakdown voltage.

244, for a charge transfer device having a groove.

283, for a JFET with Schottky gate closely aligned with source region with a groove or overhang for alignment.

284, for a JFET with Schottky gate in a groove. 330, through 334, for a short channel IGFET with a gate electrode in a groove for controlling a vertical portion of the device channel.

397, for an IGFET in an integrated circuit with a thick insulator portion recessed in a vertical walled groove in the semiconductor surface to prevent parasitic conduction channels.

466, for a light responsive device with a physical configuration feature (e.g., a groove).

534, for a passive component located in a groove in an integrated circuit device.

571, for Darlington configuration bipolar transistor structure having a nonplanar structure (e.g., a groove).

586, for a bipolar transistor structure with a nonplanar surface (e.g., a groove).

589, for a voltage variable capacitance device with means to increase active junction area (e.g., a groove).