Title:
液晶表示素子の駆動回路
Document Type and Number:
Japanese Patent JP4020979
Kind Code:
B2
Abstract:
PURPOSE: An LCD(Liquid Crystal Display) is provided to improve display uniformity. CONSTITUTION: A group of common electrodes is formed on one substrate(101). A group of segment electrodes is formed on the other substrate(102). The common electrodes intersect the segment electrode providing display dots on the LCD at each intersection. A scanning electrode driving circuit(12) inputs a driving voltage waveform to the plurality of common electrodes. A segment electrode driving circuit(11) inputs a driving voltage waveform to the plurality of segment electrodes. A power supply circuit(13) generates a plurality of voltages input to the common electrode driving circuit to form the common electrode driving voltage waveform and to the segment electrode driving circuit to form the segment driving voltage waveform. A correction circuit adds a correction voltage to either the segment electrode driving circuit or the common electrode driving circuit in accordance with a character or figure displayed on the LCD panel. The correction circuit includes a detection circuit for detecting a voltage change or a current change occurring at a portion of the LCD panel and causes a correction voltage to be generated in accordance with the voltage change or current change detected by the detection circuit.
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| JP2002268043 | SUBSTRATE FOR DISPLAY DEVICE |
| JPH0451218 | LIQUID CRYSTAL DISPLAY DEVICE |
| JPH09322099 | VIDEO DISPLAY DEVICE |
Inventors:
Katsunori Yamazaki
Satoshi Yatabe
Satoshi Yatabe
Application Number:
JP30732392A
Publication Date:
December 12, 2007
Filing Date:
November 17, 1992
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G02F1/133; G09G3/36
Domestic Patent References:
| JP2171718A | ||||
| JP3253817A | ||||
| JP425818A |
Attorney, Agent or Firm:
Masahiko Ueyanagi
Fujitsuna Hideyoshi
Osamu Suzawa
Fujitsuna Hideyoshi
Osamu Suzawa