Matrix display devices

Details Matrix display devices Matrix display devices

1996-12-11

1999-07-13

Luu, Matthew

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 90, G09G 336

Patent

active

059233117

ABSTRACT:
A matrix display device having an array of picture elements (12) which each comprise a serial charge redistribution D to A converter circuit that includes two transistors (30, 31) and two capacitors (34, 35), at least one of which comprises an electro-optic, e.g. liquid crystal, display element, and which are driven by switching signals and digital data signals from a drive circuit (21, 25) via row and column address conductors (18, 19) respectively. The two transistors of a picture element are of complementary type, e.g. n and p TFTs, connected to the same row conductor and operable in sequence by the switching signal on the row conductor (18). The drive circuit (21) is consequently simplified and the vertical scan direction can readily be reversed.

REFERENCES:
patent: 5095304 (1992-03-01), Young
patent: 5333004 (1994-07-01), Mourey et al.
patent: 5424752 (1995-06-01), Yamazaki et al.

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