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US 10,852,603 B2Granted
LCOS pixel film layer design for reflection rate improvement
AssigneeOmniVision Technologies, Inc.
InventorChun-Sheng (CS) Fan
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Abstract
A novel liquid crystal on silicon (LCoS) device includes an array of pixel electrodes having a highly reflective material formed thereon. In a particular embodiment, the pixel electrodes are aluminum and have silver pixel mirrors electroplated thereon. In a more particular embodiment, the LCoS device includes auxiliary circuitry facilitating the electroplating of the pixel mirrors.
Claims29
A liquid crystal display device comprising:
- a circuit substrate;
- an array of pixel electrodes formed on said substrate, said pixel electrodes being formed from a first material having a first reflectance;
- an array of conductive pixel mirrors formed from a second material having a second reflectance that is greater than said first reflectance, each of said conductive pixel mirrors being formed on a respective one of said pixel electrodes;
- a transparent electrode disposed over said array of conductive pixel mirrors;
- and
- liquid crystal material disposed between said conductive pixel mirrors and said transparent electrode;
- and wherein
- said circuit substrate includes a plurality of diodes;
- and
- each electrode is electrically coupled to a common node of said circuit substrate via a respective one of said diodes.
7 more elements
A method of manufacturing a liquid crystal display device, said method comprising:
- providing a circuit substrate including an array of pixel electrodes formed thereon, said pixel electrodes including a first conductive material having a first reflectance;
- providing a second conductive material having a second reflectance that is greater than said first reflectance;
- providing a transparent electrode;
- providing liquid crystal material;
- forming an array of conductive pixel mirrors over said array of electrodes from said second material such that each of said conductive pixel mirrors is formed over a respective one of said electrodes;
- disposing said transparent electrode over said array of conductive pixel mirrors;
- and
- disposing said liquid crystal material between said transparent electrode and said array of conductive pixel mirrors;
- and wherein
- said circuit substrate includes a plurality of diodes;
- and
- each electrode is electrically coupled to a common node of said circuit substrate via a respective one of said diodes.
9 more elements
Dependencies are inferred from the claim text.