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. 21, 2011
Filed:
Jan. 31, 2007
Ryuji Tsuchiya, Ehime, JP;
Hirozumi Nakamura, Ehime, JP;
Naotada Okada, Tokyo, JP;
Toshitake Kitagawa, Tokyo, JP;
Ryuji Tsuchiya, Ehime, JP;
Hirozumi Nakamura, Ehime, JP;
Naotada Okada, Tokyo, JP;
Toshitake Kitagawa, Tokyo, JP;
Harison Toshiba Lighting Corporation, Imabari-shi, Ehime, JP;
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Abstract
A backlight for a liquid crystal display device includes a plurality of point light sourcesarranged linearly, a light guide platehaving a light incident surface, a reflection surfaceand a light emitting surfacefor emitting the light reflected by the reflection surface. A light scattering patternis formed on the reflection surface. A light control patternis formed on the reflection surfaceat almost entire portions except for the light scattering patternis formed for reflecting the light introduced and for outputting from the light emitting surface. A pattern less area is formed on the reflection surfaceat a boundary portion between the light scattering patternand the light control pattern