Title:
DRIVING METHOD FOR LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
Japanese Patent JP3119737
Kind Code:
B2
Abstract:
PURPOSE: To enable less suppression of variation of an optical state and to enable high speed driving by dispersing a selecting pulse into plural pulses in one frame.
CONSTITUTION: Plural row electrodes of a matrix liquid crystal display element are divided into plural row electrode subgroups formed by containing plural row electrodes, respectively, and one row electrode subgroup is selected and driven in a lump. To the row electrode, a voltage having amplitude of Vr (Vr>0)in the positive or negative direction for an intermediate voltae is divided into plural stages and applied, as a selecting voltage at the time of selection. This volrtave is preset so taht an absolute value of amplitude is equal and its polarity becomes opposite for the intermediate voltage, in the first half part and the latter half part of its waveform. In such way, in a period in which one screen is selected once, a selecting pluse is dispersed by the number of pieces of stages and appars.
Inventors:
Hiroshi Hasebe
Takeshi Kuwata
Yutaka Nakagawa
Ko Young Chang
Takashi Yamashita
Takeshi Kuwata
Yutaka Nakagawa
Ko Young Chang
Takashi Yamashita
Application Number:
JP27786592A
Publication Date:
December 25, 2000
Filing Date:
September 22, 1992
Export Citation:
Assignee:
Asahi Glass Co., Ltd.
Optrex Co., Ltd.
Optrex Co., Ltd.
International Classes:
G02F1/133; G09G3/20; G09G3/36; (IPC1-7): G02F1/133; G09G3/36
Domestic Patent References:
| JP5445600A | ||||
| JP6315596B2 |
Other References:
ＩＥＥＥ ．ＴＲＡＮＳＡＣＴＩＯＮＳ ＯＮ ＥＬＥＣＴＲＯＮ ＤＥＶＩＣＥＳ ＥＤ−２６，Ｎｏ．５，ｐｐ．７９５−８０２
日経エレクトロニクス Ｎｏ．６１８，ｐｐ．１７９−１８９
日経エレクトロニクス Ｎｏ．６１８，ｐｐ．１７９−１８９
Attorney, Agent or Firm:
Mamoru Tsunoda
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