Title:
【発明の名称】アナログ・ビデオ信号補正装置及びTFT液晶表示装置
Document Type and Number:
Japanese Patent JP2667373
Kind Code:
B2
Abstract:
A driver for the TFT liquid crystal display panel is provided which can accommodate chip dispersion, and drift of temperature and supplied voltages. A reference voltage generated by a reference voltage generator is input by a control circuit to a display cell equivalent circuit driven by a buffer amplifier equivalent circuit and a control circuit, and its response is output from a TFT emulator circuit. Then, a difference detecting circuit compares the output and the reference voltage from the reference voltage generator, and outputs an output signal corresponding to its difference to a compensating circuit. The compensating circuit compensates analog video signals generated in the previous stage with such output. The compensated analog video signals are output to a TFT liquid crystal display panel through a sample hold circuit and a buffer amplifier.
Inventors:
Yoshinao Kobayashi
Sakaguchi Kamin
Sakaguchi Kamin
Application Number:
JP30852694A
Publication Date:
October 27, 1997
Filing Date:
December 13, 1994
Export Citation:
Assignee:
International Business Machines Corporation
International Classes:
G02F1/133; G09G3/20; G09G3/36; (IPC1-7): G09G3/36; G02F1/133; G09G3/20
Attorney, Agent or Firm:
Kiyoshi Goda (2 outside)