JPS6384124U

JPS6384124U -

Info

Publication number: JPS6384124U
Application number: JP17850286U
Authority: JP
Priority date: 1986-11-20
Filing date: 1986-11-20
Publication date: 1988-06-02

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例における液晶表示
装置に採用し得る駆動回路のブロツク図、第２図
は第１図の要部における波形図、第３図は本考案
の第２実施例における液晶表示装置の駆動回路の
ブロツク図、第４図は第２図の要部における波形
図、第５図は本考案の第３実施例における液晶表
示装置の駆動回路の回路図、第６図は本考案の液
晶表示装置のパネルにおける電極配置図、第７図
は第５図の回路における対向電極電位と映像信号
との関係を示す波形図である。第８図は従来の２
４０行のアクテイブマトリクスパネルの電極回路
図、第９図は第８図のパネルに印加する映像信号
波形図、第１０図は従来の４８０行のアクテイブ
マトリクスパネルの電極回路図、第１１図は第１
０図のパネルに印加する映像信号波形図、第１２
図イ乃至ハ、はフリツカを説明する波形図である
。１……セグメント電極、１０……ＬＣＤパネル
、２０，３０……第１，第２列駆動部、４０，５
０……第１，第２行駆動部、５３，５４……列分
割対向電極、６０，７０……第１，第２極性反転
回路、８０……同期制御回路。 FIG. 1 is a block diagram of a drive circuit that can be used in a liquid crystal display device according to a first embodiment of the present invention, FIG. 2 is a waveform diagram of the main part of FIG. 1, and FIG. 3 is a second embodiment of the present invention. 4 is a waveform diagram of the main part of FIG. 2, FIG. 5 is a circuit diagram of the driving circuit of the liquid crystal display device in the third embodiment of the present invention, and FIG. 7 is a diagram showing the arrangement of electrodes in the panel of the liquid crystal display device of the present invention, and FIG. 7 is a waveform diagram showing the relationship between the counter electrode potential and the video signal in the circuit of FIG. 5. Figure 8 shows the conventional 2
An electrode circuit diagram of a 40-row active matrix panel, FIG. 9 is a video signal waveform diagram applied to the panel in FIG. 8, FIG. 10 is an electrode circuit diagram of a conventional 480-row active matrix panel, and FIG. 1
Video signal waveform diagram applied to the panel in Figure 0, No. 12
Figures A to C are waveform diagrams illustrating flicker. 1... Segment electrode, 10... LCD panel, 20, 30... First and second column drive section, 40, 5
0...First and second row drive units, 53, 54... Column division counter electrodes, 60, 70... First and second polarity inversion circuits, 80... Synchronization control circuit.

Claims

[Scope of utility model registration request]

In an active matrix type liquid crystal display device in which a liquid crystal material is interposed between a first substrate on which a plurality of display pixel electrodes are arranged in rows and columns and a second substrate opposite to the first substrate and provided with a counter electrode, The counter electrode is divided into an appropriate number of columns extending in the column arrangement direction of the display electrodes, and the polarity of the video signal applied to each display pixel electrode is reversed at a predetermined period and is independent between each divided counter electrode. A liquid crystal display device characterized in that the voltage value of each applied DC voltage is switched and set between a first value and a second value at a predetermined period.