Methods for forming patterned semiconductors

Patent metadata

Field	Value
Publication number	US-9419024-B2
Application number	US-201514633759-A
Country	US
Kind code	B2
Filing date	Feb 27, 2015
Priority date	Apr 24, 2002
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

An electro-optic display comprises a substrate ( 100 ), non-linear devices ( 102 ) disposed substantially in one plane on the substrate ( 100 ), pixel electrodes ( 106 ) connected to the non-linear devices ( 102 ), an electro-optic medium ( 110 ) and a common electrode ( 112 ) on the opposed side of the electro-optic medium ( 110 ) from the pixel electrodes ( 106 ). The moduli of the various parts of the display are arranged so that, when the display is curved, the neutral axis or neutral plane lies substantially in the plane of the non-linear devices ( 102 ).

First claim

The invention claimed is:

1. A process for producing a plurality of non-linear devices on a substrate, the process comprising:
forming an unpatterned layer of semiconductor material on the substrate;
forming at least two discrete areas of metal overlying the unpatterned semiconductor layer; and
etching the unpatterned semiconductor layer using the discrete areas of metal as a mask, thereby patterning the layer of semiconductor material to leave at least two discrete areas of semiconductor material underlying the at least two discrete areas of metal.

2. A process according to claim 1 wherein the at least two discrete areas of metal are formed by depositing an unpatterned layer of metal over the unpatterned semiconductor and thereafter patterning the layer of metal to form the at least two discrete areas of metal.

Assignees

• E Ink Corp

Inventors

• Ritenour Andrew P
• Duthaler Gregg M

Classifications

• H10P50/691

  for Group V materials or Group III-V materials · CPC title

• H10P50/642

  Chemical etching · CPC title

• H10P14/00

  Formation of materials, e.g. in the shape of layers or pillars · CPC title

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/421

  having a particular composition, shape or crystalline structure of the active layer · CPC title