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:
Jul. 11, 1989
Filed:
May. 11, 1988
Applicant:
Inventor:
Akio Haneda, Yookaichi, JP;
Assignee:
Toppan Printing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; B05D / ; G03C / ;
U.S. Cl.
CPC ...
350317 ; 350320 ; 427165 ; 427166 ; 252582 ; 430321 ; 430325 ;
Abstract
A color filter useful for a color liquid crystal display device, wherein an opaque metal layer is used as a light-shielding layer, and formed on a transparent substrate in a matrix form. A black photoresist layer is left unremoved on the light-shielding layer and color filter layers are formed thereover to fill the matrix spaces of the light-shielding layer. A method of manufacturing such a color filter by means of photolithography is also disclosed.