Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2005-04-26
2005-04-26
Lao, Lun-yi (Department: 2673)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S095000, C345S208000, C345S089000, C349S035000, C349S169000
Reexamination Certificate
active
06885357
ABSTRACT:
A method for writing pixels in a cholesteric liquid crystal display having opposing rows and columns of electrodes and cholesteric liquid crystal material disposed between the rows and columns of electrodes to define an array of pixels, the cholesteric liquid crystals having a plurality of reflective states stable in the absence of an electrical field, one state having a minimum reflection, and another state with maximum reflection includes the steps of: applying voltages to the row an column electrodes to establish a pre-selection pixel voltage having a magnitude and duration effective to change at least one possible reflective state, but ineffective to drive the liquid crystal material to a common state; applying voltages to the row and column electrodes to establish a selection pixel voltage for selecting a final reflective state for the pixel; and applying voltages to the row and column electrodes to establish a post selection pixel voltage for achieving a final desired reflective state.
REFERENCES:
patent: 4435047 (1984-03-01), Fergason
patent: 5251048 (1993-10-01), Doane et al.
patent: 5437811 (1995-08-01), Doane et al.
patent: 5503952 (1996-04-01), Suzuki et al.
patent: 5644330 (1997-07-01), Catchpole et al.
patent: 5661533 (1997-08-01), Wu et al.
patent: 5695682 (1997-12-01), Doane et al.
patent: 5748277 (1998-05-01), Huang et al.
patent: 5933203 (1999-08-01), Wu et al.
patent: 6133895 (2000-10-01), Huang
patent: 6154190 (2000-11-01), Yang et al.
patent: 6204835 (2001-03-01), Yang et al.
patent: 6268839 (2001-07-01), Yang et al.
patent: 6268840 (2001-07-01), Huang
patent: 6414669 (2002-07-01), Masazumi
patent: 20010015723 (2001-08-01), Kwok et al.
V. Sorokin, “Simple Driving Methods for Cholesteric Reflective LCDs,”Asia Display 98, pp. 749-752.
Hashimoto et al., “Reflective Color Display Using Cholesteric Liquid Crystals,”SID 98 Digest, pp. 897-900.
U.S. Appl. No. 09/723,389, filed Nov. 28, 2000 by Johnson et al.
U.S. Appl. No. 09/851,868, filed May 9, 2001 by Stephenson et al.
U.S. Appl. No. 09/923,659, filed Aug. 7, 2001 by Mi et al.
Eastman Kodak Company
Lao Lun-yi
Manne Kathleen Neuner
LandOfFree
Method for writing pixels in a cholesteric liquid crystal... 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 writing pixels in a cholesteric liquid crystal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for writing pixels in a cholesteric liquid crystal... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3408799