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:
Jun. 16, 1987
Filed:
Jul. 18, 1986
Applicant:
Inventors:
Kuniaki Kato, Tokyo, JP;
Mutsumi Takahashi, Tokyo, JP;
Assignee:
Tokyo Keiki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; F21V / ; F21V / ; F21V / ;
U.S. Cl.
CPC ...
350345 ; 362297 ; 362311 ;
Abstract
A back-reflection type light diffusing apparatus of this invention is suitable for use in liquid crystal display panels or the like, and is formed by a light guiding plate. The light guiding plate has one surface which forms a first surface through which light is radiated while its opposite surface forms a second surface on which a light reflecting plate is mounted. The light reflecting plate is provided with non-reflecting portions disposed in such a manner that the area thereof increases the closer it gets to the light source so as to radiate light from the light radiating surface uniformly over its entire area.