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:
Feb. 16, 2016
Filed:
Feb. 14, 2013
Keio University, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Nitto Jushi Kogyo Co., Ltd., Tokyo, JP;
Yasuhiro Koike, Yokohama, JP;
Runa Nakamura, Tokyo, JP;
Fumihiro Arakawa, Tokyo, JP;
Hiroshi Yamamoto, Tokyo, JP;
Takehito Fuchida, Ibaraki, JP;
Shouhei Maezawa, Ibaraki, JP;
Hiroyuki Takemoto, Ibaraki, JP;
Nao Murakami, Ibaraki, JP;
Tsuyoshi Ishikawa, Tokyo, JP;
Eizaburo Higuchi, Tokyo, JP;
KEIO UNIVERSITY, Tokyo, JP;
DAI NIPPON PRINTING CO., LTD., Tokyo, JP;
NITTO DENKO CORPORATION, Ibaraki-shi, JP;
NITTO JUSHI KOGYO CO., LTD., Tokyo, JP;
Abstract
A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light.