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:
Jul. 13, 2011
Yoshifumi Sekiguchi, Hitachiota, JP;
Ikuo Hiyama, Hitachinaka, JP;
Tsunenori Yamamoto, Hitachi, JP;
Hiroki Kaneko, Hitachinaka, JP;
Toshiaki Tanaka, Hitachi, JP;
Yoshifumi Sekiguchi, Hitachiota, JP;
Ikuo Hiyama, Hitachinaka, JP;
Tsunenori Yamamoto, Hitachi, JP;
Hiroki Kaneko, Hitachinaka, JP;
Toshiaki Tanaka, Hitachi, JP;
Hitachi Displays, Ltd., Chiba, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo-ken, JP;
Abstract
A liquid crystal display device includes a liquid crystal panel and an illuminating device having a plurality of LED packages which include LED's and a lens. Each LED package includes a high refractive index member containing a substance having a larger refractive index than that of a material forming the lens and which seals the LED. The lens is shaped to have a recess near its center, and is shaped so that a moving radius increases as a polar angle increases within a range of 0 to 80 degrees. The moving radius is defined as a distance starting from the lens center and ending in the lens surface, and the polar angle is defined as an angle that is made by the moving radius to the center axis that is vertical to a plane on which said LED package is located and passing through the center of the lens.