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:
Apr. 16, 2013
Filed:
Mar. 19, 2008
Hiroshi Yokota, Saitama, JP;
Yasumaro Toshima, Saitama, JP;
Hiroshi Yokota, Saitama, JP;
Yasumaro Toshima, Saitama, JP;
Kimoto Co., Ltd., Tokyo, JP;
Abstract
A backlight unit does not show decrease of brightness for the frontal direction even when made thin-shaped. An edge light type backlight unitincludes a light conducting plate, a light sourcedisposed along at least one end portion of the light conducting plate, and a light diffusing filmdisposed on a light projecting surface of the light conducting plate. The light conducting platehas a thickness of 1.0 mm or smaller, the light diffusing filmhas a light diffusing layer formed from a binder resin and a light diffusing agent, wherein the coefficient of variation of particle size distribution of the light diffusing agent is in the range of 30% or smaller.