Active matrix display devices

Details Active matrix display devices Active matrix display devices

1993-10-21

1995-09-05

Oberley, Alvin E.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 92, G09G 336

Patent

active

054482585

ABSTRACT:
An active matrix display device having an array of picture elements (12) comprising capacitive display elements, for example, liquid crystal elements, driven by row and column drive circuits (21,25) via row and column conductors (18,19) in which the column drive circuit (25) supplies multi-bit digital data signals to the column conductors (19) and in which each picture element is configured as a serial charge redistribution digital to analogue converter circuit for providing the analogue voltage required by the display element. The converter circuit can comprise two switching devices (T1,T2), e.g. TFTs, and two capacitors obtained by dividing the display element into two sub-elements (CP1,CP2). Row conductors (18) may be shared between adjacent rows of picture elements.

REFERENCES:
patent: 5012228 (1991-04-01), Masuda et al.
patent: 5061920 (1991-10-01), Nelson
patent: 5170158 (1992-12-01), Shinya
patent: 5296870 (1994-03-01), Nicholas
R. E. Suarez et al., "All-MOS Charge Redistribution Analog-to-Digital Conversion Techniques--Part II", IEEE Journal of Solid-State Circuits, Dec. 1975, pp. 379-385.
P. E. Allen et al., Book entitled: "CMOS Analog Circuit Design", published 1987, pp. 544-550.

Affiliated with

Also associated with

Rating

Active matrix display devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-475550