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:
Oct. 08, 2013
Filed:
Apr. 16, 2007
Eiji Ohta, Miyagi, JP;
Toru Abiko, Miyagi, JP;
Masato Ishigaki, Miyagi, JP;
Satoshi Sato, Miyagi, JP;
Yasuhiro Nishida, Miyagi, JP;
Akihiro Horii, Miyagi, JP;
Eiji Ohta, Miyagi, JP;
Toru Abiko, Miyagi, JP;
Masato Ishigaki, Miyagi, JP;
Satoshi Sato, Miyagi, JP;
Yasuhiro Nishida, Miyagi, JP;
Akihiro Horii, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
An optical sheet, a backlight device, and a liquid crystal display device are provided. The beam-condensing optical sheet includes a large number of irregularity portions arranged on one main surface of a light-transmissive base, in which a pitch of arrangement of the irregularity portions is 110 μm or more and 330 μm or less, and surface roughness (Ra) of the irregularity portion is 0.1 μm or less.