JPS6382228U

JPS6382228U -

Info

Publication number: JPS6382228U
Application number: JP17770286U
Authority: JP
Priority date: 1986-11-19
Filing date: 1986-11-19
Publication date: 1988-05-30

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図は変形例を示
す回路図、第７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８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９図は従来の２４０行のアクテイ
ブマトリクスパネルの電極回路図、第１０図は第
９図のパネルに印加する映像信号波形図、第１１
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１２図は第１１図のパネルに
印加する映像信号波形図、第１３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、５１，５２……行分
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 circuit diagram showing a modified example, FIG. 7 is an electrode arrangement diagram in the panel of the liquid crystal display device of the present invention, and FIG. 8 is a waveform diagram showing the relationship between the counter electrode potential and the video signal in the circuit of FIG. 5. . Figure 9 is an electrode circuit diagram of a conventional 240-row active matrix panel, Figure 10 is a video signal waveform diagram applied to the panel in Figure 9, and Figure 11 is a diagram of the video signal waveform applied to the panel in Figure 9.
The figure is an electrode circuit diagram of a conventional 480-row active matrix panel, FIG. 12 is a video signal waveform diagram applied to the panel of FIG. 11, and FIG. 13, A to C,
is a waveform diagram illustrating flicker. 1... Segment electrode, 10... LCD panel, 20, 30... First and second column drive section, 40, 5
0...First and second row driving units, 51, 52... Row dividing 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 rows extending in the row arrangement direction of the display electrodes, and the polarity of the video signal applied to each display pixel electrode is inverted at a predetermined period, and between each divided counter electrode. A liquid crystal display device characterized in that the voltage value of each independent applied DC voltage is switched and set between a first value and a second value at a predetermined period.