Driving circuit of an active matrix liquid crystal display

Details Driving circuit of an active matrix liquid crystal display Driving circuit of an active matrix liquid crystal display

1997-01-31

1999-11-23

Mengistu, Amare

Computer graphics processing and selective visual display system

Display driving control circuitry

345 92, G09G 500

Patent

active

059908777

ABSTRACT:
A driving circuit of an active matrix liquid crystal display, including a gate driving circuit for applying gate driving signals, the gate driving circuit including a shift register and a buffer; a data driving circuit for applying data driving signals, the data driving circuit including a shift register, a buffer, a visual signal input line, and a plurality of pass gate transistors for outputting visual signals input from the visual signal input line in response to signals input from the buffer, a gate and a source of each pass gate transistor being connected to the buffer and the visual signal input line, respectively; and a data output representing unit connected to the gate driving circuit and the data driving circuit, the data output representing unit including a plurality of data bus lines and scan bus lines crossing each other, the data bus lines and the scan bus lines being connected to the data driving circuit and the gate driving circuit, respectively, a plurality of auxiliary thin film transistors, one of which is respectively connected at each intersection of the data bus lines and scan bus lines, gates and sources of the auxiliary thin film transistors being connected to the data bus lines and the scan bus lines, respectively, and a plurality of pixel thin film transistors, one of which is respectively connected at each intersection, gates and sources of the pixel thin film transistors being connected to drains of the auxiliary thin film transistors and the next data bus lines, respectively.

REFERENCES:
patent: 4429305 (1984-01-01), Hosokawa et al.
patent: 4532506 (1985-07-01), Kitazima
patent: 4904989 (1990-02-01), Matsui
patent: 5194974 (1993-03-01), Hamada
patent: 5412397 (1995-05-01), Kanatani
patent: 5748175 (1998-05-01), Shimada
"Display System", MacDonald et al, 1997, p. 178.

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