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:
May. 14, 2002
Filed:
Jan. 28, 2000
Koji Fujiwara, Tenri, JP;
Tomohiko Yamamoto, Nara, JP;
Keiichi Tanaka, Tenri, JP;
Naoto Inoue, Nara, JP;
Hideki Ichioka, Nara, JP;
Shapr Kabushiki Kaisha, Osaka, JP;
Abstract
It is an object of the invention to reduce a leakage low-frequency electric field from a panel section of a matrix type. In the case where a panel section has a usual current structure in which the panel section has a single common electrode elongating over the whole of the display region of the panel section, the maximum voltage difference of a reference signal supplied to the common electrode is defined to be 0.3678×x (wherein x is the area of the display region) or less. In the case where the panel section has the so-called counter source structure and a plurality of column electrodes, the maximum voltage difference of a reference signal supplied to the column electrodes is defined to be ax (wherein a=0.3565×y , b=−0.0937y+0.7091, and y is a ratio of the area of all the column electrodes to the area of the display region) or less. In the case where a panel section has the counter source structure, the average area per unit length of one part of the column electrode opposed to a signal line is smaller than the average area per unit length of the remaining part of the column electrode other than the one part.