Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1993-12-15
1995-12-26
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 49, 359 60, G02F 11343
Patent
active
054792800
ABSTRACT:
An active matrix for liquid crystal displays having a plurality of picture elements, a plurality of address buses to which an address signal having a high signal level and a low steady state signal level is applied, and a plurality of data buses orthogonal to the address buses. Each picture element includes at least one display electrode device; a first switching device coupled between the display electrode device and a first respective one of the address buses and a respective one of the data buses; and a second switching device coupled between the display electrode device and a second respective one of the address buses and the respective data bus. The second switching device includes a device for preventing the display electrode from discharging whereby a substantially same voltage is maintained at the display electrode during the time when the address signal changes from the high level to the low level.
REFERENCES:
patent: 4890097 (1989-12-01), Yamashita et al.
patent: 4930874 (1990-06-01), Mitsumune et al.
patent: 5191322 (1993-03-01), Katayama et al.
Chernorotov Boris P.
Kazurov Boris I.
Krasnikov Gennadi Y.
Ogurtsov Oleg F.
Abraham Fetsum
Goldstar Co. Ltd.
Sikes William L.
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