Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1993-03-10
1994-11-15
Gross, Anita Pellman
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 70, 359 67, 359 87, G02F 11343, G02F 11335
Patent
active
053653556
ABSTRACT:
A back plate structure for a reflective type active matrix liquid crystal display and methods for forming the same, is described. The structure includes an array of reflective electrodes for selectively altering the molecular alignment of liquid crystal material confined above each of the reflective electrodes and an array of light shields spatially offset with the array of reflective electrodes so that the light shields block light passing through portions of gaps formed between adjacent reflective electrodes. Each of the reflective electrodes also has a corresponding light shield which is electrically connected to that reflective electrode so that the liquid crystal material confined above portions of the gaps between adjacent reflective materials can also be altered by the electrically connected light shields. The structure also includes a plurality of positively biased diffusion regions formed in areas where incident light is expected to strike the surface of the silicon substrate, where the positively biased diffusion regions act as electron "collectors" and the grounded silicon substrate acts as a hole "collector" for any electrons and holes generated by the photons of light striking the surface of the silicon substrate.
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"Liquid Crystal TV Displays: Principles and Applications . . . ," by E. Kaneko, D. Reidel Publishing Company, KTK Scientific Publishers/Tokyo, Chapter 7, (1987).
"Liquid Crystal MOS Matrix High Density Program," by Bleha et al., Final Technical Report, prepared for U.S. Army, Sep. 1, 1981, AD-A152987.
Buchele William N.
Hastings, III William A.
Gross Anita Pellman
WAH-III Technology Corporation
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