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:
Jul. 03, 2012
Filed:
Jun. 10, 2008
Liquid crystal display device comprising a diffuser board which includes a plurality of micro lenses
Yoshifumi Sikiguchi, Hitachiota, JP;
Ikuo Hiyama, Hitachinaka, JP;
Hiroki Kaneko, Hitachinaka, JP;
Hitachi Displays, Ltd., Chiba, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo-ken, JP;
Abstract
An object of the present invention is to provide a liquid-crystal display device which includes a diffuser board that does not produce striped mura on the surface of a liquid crystal panel even if point light sources are used as light sources of a backlight. A backlight apparatusis provided with a diffuser boardhaving diffusion portions. At each of the diffusion portions, the light L emitted by a LED moduleincluded in a light source unitis reflected by prism patterns P and diffused around the LED module. Then, the diffused light is reflected again by a reflecting surface formed on the inner surface of a housingand emitted from the backlight apparatus, thereby achieving illuminating light without mura.