Display device

Details Display device Display device

1990-06-01

1992-06-23

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340793, 359 87, 359 88, G09G 336

Patent

active

051246953

ABSTRACT:
In a liquid crystal display, each pixel is formed of four separately energizable areas which have relative light outputs in the ratio 1:2:4:8 respectively, thereby allowing a range of 16 grey levels to be achieved by appropriate selection of areas. Each of the areas has a number of segments, which are spaced-apart but concentrically arranged, in order to have the same average position, so that different bit patterns cause the pixel to change brightness only, without any apparent positional change.

REFERENCES:
patent: 3647958 (1972-03-01), Sobel
patent: 3845243 (1974-10-01), Schmersal et al.
patent: 3886403 (1975-05-01), Owaki et al.
patent: 3997719 (1976-12-01), Judice
patent: 4328492 (1982-05-01), Bobak et al.
patent: 4427979 (1984-01-01), Clerc et al.
patent: 4527863 (1985-07-01), Glasper et al.
patent: 4531160 (1985-07-01), Ehn
patent: 4559535 (1985-12-01), Watkins et al.
patent: 4661809 (1987-04-01), Anderson et al.
patent: 4672357 (1987-06-01), Lorteije et al.
patent: 4712877 (1987-12-01), Okada et al.
patent: 4752774 (1988-06-01), Clerc et al.
patent: 4850675 (1989-07-01), Hatanaka et al.

Affiliated with

Also associated with

Rating

Display device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-935923