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:
Sep. 08, 1998
Filed:
Apr. 20, 1995
Kunihiko Yamamoto, Kashiba, JP;
Shinya Takahashi, Yamatokoriyama, JP;
Hiroyuki Furukawa, Ueno, JP;
Sadahiko Yasukawa, Nara-ken, JP;
Yasukuni Yamane, Nara-ken, JP;
Yutaka Ishii, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In a liquid crystal display device having a simple matrix liquid crystal display panel including a plurality of scanning electrodes disposed in parallel with each other and a plurality of data electrodes disposed in parallel with each other so as to cross the scanning electrodes, the scanning electrodes are divided into a predetermined number of sub-groups, and each sub-group is successively driven by utilizing an orthogonal function. For a selection, a signal having an electric potential of .+-.Vr, which is a selection pulse string according to the orthogonal function, is applied to the respective scanning electrodes as a scanning electrode driving signal. For a non-selection, a signal having an electric potential of 0 is applied to the respective scanning electrodes as the scanning electrode driving signal. On the other hand, a data electrode driving signal having an electric potential proportional to a sum of products of a display pattern and the scanning electrode driving signal is applied to the respective data electrodes. A bias value 'A', which is a proportional constant therefor, is set in a predetermined range. Thus, a uniform display with a high contrast enabling a fast response can be realized while suppressing a frame response phenomenon and display inconsistencies.