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:
Mar. 14, 2000
Filed:
Aug. 27, 1997
Applicant:
Inventors:
Assignee:
Casio Computer Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G02F / ; G02F / ;
U.S. Cl.
CPC ...
349106 ; 349110 ; 349155 ;
Abstract
The periphery of a color filter element formed on a transparent glass substrate and the periphery of a pixel electrode formed on the color filter element are made to overlap with gate lines and drain lines. Black matrices are formed between adjacent color filter elements, on neighboring color filter elements, and on pixel electrodes. In this case, the opening of the black matrix slightly encroaches upon the gate lines and the drain lines. As a result, the area surrounded by the gate lines and the drain lines minus the area for forming a thin film transistor therein is made wide. Accordingly, the opening factor of a liquid crystal display device is made large.