Invention Grant
- Patent Title: Driving method of driving a liquid crystal display element
- Patent Title (中): 驱动液晶显示元件的驱动方法
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Application No.: US477713Application Date: 1995-06-07
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Publication No.: US5596344APublication Date: 1997-01-21
- Inventor: Takeshi Kuwata , Temkar Ruckmongathan , Yutaka Nakagawa , Hidemasa Koh , Hiroshi Hasebe , Takashi Yamashita , Hideyuki Nagano , Takanori Ohnishi
- Applicant: Takeshi Kuwata , Temkar Ruckmongathan , Yutaka Nakagawa , Hidemasa Koh , Hiroshi Hasebe , Takashi Yamashita , Hideyuki Nagano , Takanori Ohnishi
- Applicant Address: JPX Tokyo
- Assignee: Asahi Glass Company Ltd.
- Current Assignee: Asahi Glass Company Ltd.
- Current Assignee Address: JPX Tokyo
- Priority: JPX3-193502 19910708; JPX3-229606 19910816; JPX4-129714 19920422; JPX4-148844 19920515; JPX4-148845 19920515
- Main IPC: G01N35/04
- IPC: G01N35/04 ; G09G3/36 ; G09G3/18
Abstract:
A driving method for a liquid crystal display element including L row electrodes and K column electrodes in which two kinds of data, data corresponding to a logical "0" and data corresponding to a logical "1", are used to display gray shades. The row electrodes are divided into row electrode subgroups which are selected as a batch. When the row electrode subgroups are selected, they have a positive voltage level with respect to a non-election voltage and a negative voltage level with respect to a selection voltage. A matrix of column vector components in which row voltages are time-sequentially arranged form a display cycle in each of the row electrode subgroups, and such a matrix has orthogonality. Row voltages are dispersively applied in a display cycle in each of the row electrode subgroups. Further, a number of column vector components K is related to a number of row electrodes L such that K is a minimum value satisfying the orthogonality and L is.ltoreq.2.sup.P =K, where K, L and P are integers. A gray shade is then effectuated by displaying a plural number of ON and OFF signs at a specified ratio.
Public/Granted literature
- US4502666A Haulage machine for hauling an elongate cylindrical unit Public/Granted day:1985-03-05
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