Drive for active matrix cholesteric liquid crystal display

Details Drive for active matrix cholesteric liquid crystal display Drive for active matrix cholesteric liquid crystal display

2003-10-02

2008-10-07

Sharia, Prabodh (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S094000, C345S098000, C345S100000, C345S097000

Reexamination Certificate

active

07432895

ABSTRACT:
A method of driving an active matrix cholesteric liquid crystal display that includes a matrix of data and select lines and an array of pixels connected to the data and select lines through active switching elements, a pixel being capable of producing two or more gray levels includes providing a select voltage and a plurality of data voltages, and during a pixel writing cycle, applying the select voltage and the data voltages to the select and data lines of the display to produce only three pixel voltage levels 0, +U and −U, having respective duty cycles and controlling the duty cycles of the pixel voltage levels to determine the gray levels of the pixels, and wherein the average voltage applied to a pixel during the pixel writing cycle is zero.

REFERENCES:
patent: 4716403 (1987-12-01), Morozumi
patent: 4743096 (1988-05-01), Wakai et al.
patent: 5185602 (1993-02-01), Bassetti et al.
patent: 5280280 (1994-01-01), Hotto
patent: 5745087 (1998-04-01), Tomiyoshi et al.
patent: 5777590 (1998-07-01), Saxena et al.
patent: 6394870 (2002-05-01), Petruchik et al.
patent: 6421031 (2002-07-01), Ronzani et al.
patent: 6423368 (2002-07-01), Stephenson et al.
patent: 6518944 (2003-02-01), Doane et al.
patent: 6614491 (2003-09-01), Hasegawa et al.
patent: 6629138 (2003-09-01), Lambert et al.
patent: 6710760 (2004-03-01), Johnson et al.
patent: 6894668 (2005-05-01), Mi et al.
patent: 6999050 (2006-02-01), Hung et al.
patent: 7012600 (2006-03-01), Zehner et al.
patent: 7119772 (2006-10-01), Amundson et al.
patent: 7164406 (2007-01-01), Lee
patent: 7170481 (2007-01-01), Doane et al.
patent: 7193625 (2007-03-01), Danner et al.
patent: 2001/0050666 (2001-12-01), Huang et al.
patent: 2002/0005831 (2002-01-01), Ishii
patent: 2002/0186182 (2002-12-01), Stephenson et al.
patent: 2002/0190923 (2002-12-01), Ronzani et al.
patent: 2003/0034945 (2003-02-01), Mi et al.
patent: 2003/0128218 (2003-07-01), Struyk
patent: 2003/0137521 (2003-07-01), Zehner et al.
patent: 2003/0206147 (2003-11-01), Mi et al.
patent: 2005/0001812 (2005-01-01), Amundson et al.
patent: 2005/0024353 (2005-02-01), Amundson et al.
patent: 2005/0083284 (2005-04-01), Huang et al.
patent: 2005/0219184 (2005-10-01), Zehner et al.
patent: 2006/0050032 (2006-03-01), Gunner et al.
patent: 2006/0139310 (2006-06-01), Zehner et al.
patent: 2006/0139311 (2006-06-01), Zehner et al.
patent: 2006/0232531 (2006-10-01), Amundson et al.
patent: 2006/0267896 (2006-11-01), Edwards
Nahm et al., Amorphous Silicon Thin-Film Transistor Active-Matrix Reflective Cholesteric Liquid Crystal Display,ASIA Display, 1998, pp. 979-982.
Kawata et al., A High Reflective LCD with Double Cholesteric Liquid Crystal Layers,Proceedings of the 17th International Display Research Conference, 1997, pp. 246-249.
Rybalochka et al., Dynamic Drive Scheme for Fast Addressing of Cholesteric Displays,SID 2000, pp. 818-821.
Rybalochka et al., Simple Drive Scheme for Bistable Cholesteric LCDs,SID 01 Digest, pp. 882-885.

Affiliated with

Also associated with

Rating

Drive for active matrix cholesteric liquid crystal display does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4018948