Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
1997-12-18
2008-12-23
Dudek, James A (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S110000
Reexamination Certificate
active
07468766
ABSTRACT:
A reflective spatial light modulator array is described incorporating liquid crystal devices, mirrors, a semiconductor substrate, electrical circuits, and a light blocking layer. The light blocking layer can be a reflector/absorber layer containing titanium. The light blocking layer can be a layer resulting in attenuation of incident light below a certain level at the semiconductor substrate. The invention overcomes the problem of shielding light from semiconductor devices, high optical throughput and contrast, pixel storage capacitance to hold the voltage across the liquid crystal device and precise control of the liquid crystal device thickness without spacers obscuring the mirrors.
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Colgan Evan George
Harper James McKell Edwin
Kaufman Frank Benjamin
Manny Margaret Paggi
Melcher Robert Lee
Dudek James A
International Business Machines - Corporation
Morris Daniel P.
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