Method for driving liquid crystal device and driving...

Details Method for driving liquid crystal device and driving... Method for driving liquid crystal device and driving...

2008-10-08

2010-10-19

Sanghavi, Hemang (Department: 2874)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Optical excitation

C349S033000, C345S087000, C345S094000, C345S098000

Reexamination Certificate

active

07817213

ABSTRACT:
Sequentially performed are (1) an entire liquid crystal layer is initialized into a focal conic state, (2) an image is written onto the liquid crystal device by scanning with selecting exposure or non-exposure while applying a voltage that does not exceed a threshold value for a state change from the focal conic state to a homeotropic state during the non-exposure but exceeds the threshold value during the exposure and that causes the focal conic state and the homeotropic state to be bi-stable after the exposure, and (3) the application of the voltage is stopped to change a state of a portion, of which the state has changed to the homeotropic state, to the planer state. In (2), an electric field energy applied to an exposure portion of the liquid crystal layer is controlled to gradually increase from a start to an end of the series of scanning actions.

REFERENCES:
patent: 4435047 (1984-03-01), Fergason
patent: 6067135 (2000-05-01), Shimizu et al.
patent: 7522141 (2009-04-01), Mi et al.
patent: 2006/0012556 (2006-01-01), Yoneda et al.
patent: 2007/0008262 (2007-01-01), Harada et al.
patent: B2-7-9512 (1995-02-01), None
patent: A-9-236791 (1997-09-01), None
patent: A-9-258258 (1997-10-01), None
patent: A-11-237644 (1999-08-01), None
patent: B2-3178530 (2001-04-01), None
patent: A-2007-17461 (2007-01-01), None

Affiliated with

Also associated with

Rating

Method for driving liquid crystal device and driving... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for driving liquid crystal device and driving..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for driving liquid crystal device and driving... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4188247