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. 07, 2002
Filed:
Jul. 24, 2001
Applicant:
Inventors:
Toshiyuki Uno, Kanagawa, JP;
Yasuhiko Akao, Yamagata, JP;
Assignee:
Asahi Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/20 ; G02F 1/1335 ;
U.S. Cl.
CPC ...
G02B 5/20 ; G02F 1/1335 ;
Abstract
It is to provide a black matrix with which the etching rate during patterning can be controlled to be the same level as that of a metal chromium film, and which has adequate acid resistance, alkali resistance, heat resistance and water resistance in a color filter production process. At least one light shielding layer and a low-reflecting film as the case requires are formed on a transparent substrate, and the composition of the light shielding layer is substantially as follows: