JPH0343697U

JPH0343697U -

Info

Publication number: JPH0343697U
Application number: JP10444589U
Authority: JP
Priority date: 1989-09-06
Filing date: 1989-09-06
Publication date: 1991-04-24

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す液晶表示装置の
構成ブロツク図、第２図は従来の液晶表示装置の
構成ブロツク図、第３図は第２図のタイミングチ
ヤート、第４図は第１図中の極性反転回路の構成
ブロツク図、第５図は第４図中のＤ／Ａ変換器の
回路図、第６図は第１図中のデータドライバの構
成ブロツク図、第７図は第４図中のＤ／Ａ変換器
の変換特性図、第８図は第４図中のＤ／Ａ変換器
の出力波形図である。１０２……Ｄ／Ａ変換器、１０６……極性反転
回路、１０６ａ……排他回路、１０６ｃ……Ｄ／
Ａ変換器、１０７，１０８……データドライバ、
１０９……液晶パネル、１０９−１〜１０９−Ｍ
……データ電極、１１０……走査ドライバ、１１
０−１〜１１０−Ｎ……走査電極、Ｓｇ，Ａ１〜
Ａ８……画素データ、Ｓｋ……液晶交流化信号、
Ｇ１〜Ｇｎ……走査信号、ｄ１〜ｄｍ……データ
信号。 FIG. 1 is a block diagram of a liquid crystal display device showing an embodiment of the present invention, FIG. 2 is a block diagram of a conventional liquid crystal display device, FIG. 3 is a timing chart of FIG. 2, and FIG. 4 is a block diagram of a conventional liquid crystal display device. 5 is a circuit diagram of the D/A converter in FIG. 4, FIG. 6 is a configuration block diagram of the data driver in FIG. 1, and FIG. 4 is a conversion characteristic diagram of the D/A converter, and FIG. 8 is an output waveform diagram of the D/A converter in FIG. 4. 102...D/A converter, 106...Polarity inversion circuit, 106a...Exclusion circuit, 106c...D/
A converter, 107, 108...data driver,
109...Liquid crystal panel, 109-1 to 109-M
...Data electrode, 110...Scan driver, 11
0-1~110-N...Scanning electrode, Sg, A1~
A8...pixel data, Sk...liquid crystal alternating signal,
G1 to Gn...scanning signals, d1 to dm...data signals.

Claims

[Claims for Utility Model Registration] A liquid crystal panel in which active elements and liquid crystal cells connected to orthogonal locations of scanning electrodes and data electrodes are arranged in a matrix, and a data signal corresponding to a video signal is supplied to the data electrodes. a scan driver that supplies a scan signal to the scan electrode; and a polarity inversion circuit that converts the video signal into alternating current and outputs it to the data driver. An analog/digital converter for converting the pixel data into pixel data is provided, and the polarity inversion circuit is a logic circuit for determining whether or not the pixel data matches or does not match an inverted signal of a liquid crystal alternating signal that converts the pixel data into alternating current. and a digital/digital converter that converts the output of the logic circuit into an analog signal based on the polarity of the liquid crystal alternating signal.
A liquid crystal display device comprising: an analog converter;