Apparatus and method for providing a gray scale in liquid crysta

Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

340793, G09G 336

Patent

active

052046591

ABSTRACT:
A liquid crystal display is described that includes gray scale capability. Each pixel of the display is subdivided into a plurality of subpixels. Each subpixel has coupled thereto a thin film transistor, the thin film transistor coupled to the effective subpixel capacitor. The liquid crystal material is contained between the effective capacitor plates. The voltage applied to the effective capacitor resulting from current flowing through the thin film transistor controls the optical activity of the subpixel. By controlling parameters associated with the thin transistor and by controlling the voltage applied to the pixel (and the subpixel thin film transistors), the optical properties of the subpixel can be controlled as a result of the charge applied across the effective capacitor to provide an angular independent gray scale for the pixel.

REFERENCES:
patent: 3647958 (1972-03-01), Sobel
patent: 4651148 (1987-03-01), Takeda et al.
patent: 4655550 (1987-04-01), Crossland et al.
patent: 4661809 (1987-04-01), Anderson et al.
patent: 4712877 (1987-12-01), Okada et al.
patent: 4743096 (1988-05-01), Wakai et al.
patent: 4747671 (1988-05-01), Takahashi et al.
patent: 4761058 (1988-08-01), Okubo et al.
patent: 4791417 (1988-12-01), Bobak
Paent Abstract of Japan, vol. 10, No. 41 (P-429) (2098) 18 Feb. 1986.
Patent Abstract of Japan, vol. 11, No. 270 (P-611) (2717) 3 Sep. 1987.
W. W. Holloway, Jr. et al., "Dynamic Scattering by a Nematic Liquid Crystal Where the Applied Electric Field is Normal to the Incident Light", Journal of Applied Physics, vol. 42, No. 13, Dec. 1971, pp. 5395-5399.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Apparatus and method for providing a gray scale in liquid crysta does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for providing a gray scale in liquid crysta, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for providing a gray scale in liquid crysta will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1528557

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.