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;
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Nitto Jushi Kogyo Co., Ltd., Tokyo, JP;
Yasuhiro Koike, Yokohama, JP;
Takehito Fuchida, Ibaraki, JP;
Shouhei Maezawa, Ibaraki, JP;
Hiroyuki Takemoto, Ibaraki, JP;
Nao Murakami, Ibaraki, JP;
Runa Nakamura, Tokyo, JP;
Fumihiro Arakawa, Tokyo, JP;
Hiroshi Yamamoto, Tokyo, JP;
Tsuyoshi Ishikawa, Tokyo, JP;
Eizaburo Higuchi, Tokyo, JP;
KEIO UNIVERSITY, Tokyo, JP;
NITTO DENKO CORPORATION, Ibaraki-shi, JP;
DAI NIPPON PRINTING CO., LTD., Tokyo, JP;
NITTO JUSHI KOGYO CO., LTD., Tokyo, JP;
Abstract
A liquid crystal display apparatus comprises: a liquid crystal display panel including a liquid crystal cell between a first polarizing plate and a second polarizing plate; and a surface light source device having a light source unit and a light guide plate. In a polarized light output from the light guide plate, when the normal direction of a light output surface is defined to be at a polar angle of 90°, and the light guiding direction of the light guide plate is defined to be a direction of an azimuth angle of 0°-180°, a ratio La/Lt of integrated intensity La of output light in ranges where the polar angle is 50° to 80° and the azimuth angle is 135° to 225°, 0° to 45°, and 315° to 360° to integrated intensity Lt of total output light is 0.3 or more.