Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-01-30
2009-11-17
Liang, Regina (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S094000, C349S033000
Reexamination Certificate
active
07619600
ABSTRACT:
A driving method of a liquid crystal device for recording an image, the liquid crystal device including a liquid crystal layer having a cholesteric liquid crystal, a photoconductor layer accumulated on the liquid crystal layer, and electrodes, includes initializing an entire liquid crystal layer to a focal conic texture by applying a voltage exceeding a threshold value of transition from a planar texture to a focal conic texture, exposing the liquid crystal device imagewise while applying a voltage not exceeding a threshold value from the focal conic texture to a homeotropic texture upon non-exposure but exceeding the threshold value upon exposure and that provides bistability of the focal conic texture and the homeotropic texture with hysteresis upon non-exposure, and fixing a displayed image by releasing an application of voltage to change a part of the liquid crystal layer changed to the homeotropic texture to the planar texture.
REFERENCES:
patent: 6414669 (2002-07-01), Masazumi
patent: 2001/0048414 (2001-12-01), Yamakawa et al.
patent: A 11-237644 (1999-08-01), None
patent: A 11-326871 (1999-11-01), None
patent: A 2000-514932 (2000-11-01), None
Arisawa Hiroshi
Gan Taijyu
Gomyou Makoto
Harada Haruo
Okano Yasunori
Fuji 'Xerox Co., Ltd.
Liang Regina
Oliff & Berridg,e PLC
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