Method for driving active matrix display device

Details Method for driving active matrix display device Method for driving active matrix display device

1995-10-02

1999-05-11

Lao, Lun-Yi

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 93, 349 48, G09G3/36

Patent

active

059032499

ABSTRACT:
The object of the invention is to design for reduction of the effects of thin-film transistor OFF current and to improve image quality in an active matrix display device in which polysilicon thin-film transistors are used.
Plural serially connected thin-film transistors are provided for one pixel electrode, different signals are imposed on the gate terminals of respective thin-film transistors, and a signal is written into the pixel when all the serially connected thin-film transistors are in an on state.
Further, since the thin-film transistors are connected in series, the voltage imposed on the source and drain electrodes when they are all in an off state is divided, and consequently the voltage across the source and drain electrodes of the thin-film transistor that drives the pixel is smaller and the OFF current is reduced.

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