The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 1996
Filed:
Dec. 28, 1993
Takeshi Kuwata, Yokohama, JP;
Temkar N Ruckmongathan, Bangalore, IN;
Yutaka Nakagawa, Isehara, JP;
Hidemasa Koh, Yokohama, JP;
Hiroshi Hasebe, Yokohama, JP;
Takashi Yamashita, Sagamihara, JP;
Hideyuki Nagano, Yokohama, JP;
Takanori Ohnishi, Chiba, JP;
Asashi Glass Company Ltd., Tokyo, JP;
Abstract
A driving method of a liquid crystal display element having plural numbers of scanning electrodes and data electrodes where a J.times.L number (J and L are each integers.gtoreq.2) of scanning electrodes are divided into J subgroups each having L scanning electrodes so that the subgroups are selected and driven as a batch. The subgroups are selected while the following conditions are satisfied: (1) in L=k.multidot.N.multidot.T/.tau., a value satisfying k=10-250 is determined, where L is the number of row electrodes selected, N is the total number of row electrodes, T is a selection time of a single scanning electrode and .tau. is an average response time of a liquid crystal display element; (2) in a selection time, a voltage is applied to the scanning electrodes in a positive or negative direction with respect to an intermediate voltage, and in a non-selection time, the intermediate voltage is applied to the same, (3) for a selection voltage matrix, an orthogonal matrix A having L rows and elements of +1 and -1 which correspond respectively to a positive voltage and a negative voltage, is selected, and (4) in a selection time of the scanning electrode subgroups, application of the voltage is so made that elements of a column vector in the selection voltage matrix correspond to the amplitudes of the voltage to the scanning electrodes forming the scanning electrode subgroups.