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:
Feb. 04, 1997
Filed:
Aug. 31, 1994
Applicant:
Inventors:
Assignee:
Enplas Corporation, Saitama-ken, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G01D / ; F21V / ; F21V / ;
U.S. Cl.
CPC ...
349 57 ; 362 27 ; 362 31 ; 362331 ; 349 64 ; 349 65 ;
Abstract
A transparent member having a multiplicity of prism-like convex portions which are aligned in parallel to each other and formed on at least one of surfaces of the member; the member is used to be disposed between a light emitting surface side of a surface light source device and a liquid crystal display device; and by using the member, it is possible to illuminate the liquid crystal display device in a bright and uniform manner and to prevent that any stripe pattern is appeared.