Drive schemes for gray scale bistable cholesteric reflective...

Details Drive schemes for gray scale bistable cholesteric reflective... Drive schemes for gray scale bistable cholesteric reflective...

2006-04-04

2006-04-04

Shankar, Vijay (Department: 2673)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S089000

Reexamination Certificate

active

07023409

ABSTRACT:
A method of addressing a bistable liquid crystal material having incremental reflectance properties disposed between opposed substrates is disclosed. One substrate has a first plurality of electrodes deposited thereon facing a second substrate which has a second plurality of electrodes disposed thereon. The intersection of the first and second plurality of electrodes forms a plurality of pixels. The addressing method includes applying a predetermined number of pulses to the first plurality of electrodes, and applying a like number of the predetermined number of pulses to the second plurality of electrodes. Each of the predetermined number of pulses has a different frequency, wherein the predetermined number of pulses are applied in a set time period.

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Yu and Kwok,A New Driving Scheme for Reflective Bistable Cholesteric LCDs, SID 97 Digest (1997), pp. 659-662.
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Hashimoto et al.,Invited Paper: Reflective Color Display Using Cholesteric Liquid Crystals, SID Digest, vol. XXIX (1998), pp. 897-900.

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