Display scanning circuit

Details Display scanning circuit Display scanning circuit

1994-11-29

1997-07-15

Hjerpe, Richard

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 99, 345100, 345197, G09G 336

Patent

active

056487908

ABSTRACT:
A row select driver circuit is used to energize each pixel row sequentially of a liquid crystal display. The output of each row select driver circuit is connected to a corresponding pixel row line and to a succeeding row select driver circuit as an activating input. All the row select circuits are integrated with thin-film transistors and deposited on the same glass substrate as the pixels. The number of leads connected to the assembly is much less than the number of pixel rows, including six overlapping clock signals (three each for odd-numbered rows and even-numbered rows), a shift-in signal, a positive power supply terminal and at least one ground. In one example, the number of leads is reduced from 240 to 10.

REFERENCES:
patent: 5313222 (1994-05-01), Lee
patent: 5440323 (1995-08-01), Okada
patent: 5442372 (1995-08-01), Shiki
patent: 5461424 (1995-10-01), Shimizu
patent: 5510805 (1996-04-01), Lee

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