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:
Jan. 04, 2005
Filed:
May. 30, 2002
Applicant:
Atsushi Endo, Chiba, JP;
Inventor:
Atsushi Endo, Chiba, JP;
Assignee:
Seiko Instruments Inc., Chiba, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 11335 ;
U.S. Cl.
CPC ...
Abstract
A liquid crystal display device is provided which includes an increased brightness of a display panel by effectively utilizing light from a light source. In the liquid crystal display device, a refractive surface of a light guide plate for guiding light that enters an inner portion from the light source, is composed of a plurality of slant dividing surfaces and connection surfaces provided between the dividing surfaces. A slant angle of the dividing surfaces is set to one at which the light projected from the light source is reflected in a direction substantially parallel with a plate of the light guide plate.