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:
Dec. 21, 2010
Filed:
Feb. 19, 2008
Akimasa Yuuki, Tokyo, JP;
Kyoichiro Oda, Tokyo, JP;
Naoko Iwasaki, Tokyo, JP;
Shin Tahata, Tokyo, JP;
Toru Kokogawa, Tokyo, JP;
Akimasa Yuuki, Tokyo, JP;
Kyoichiro Oda, Tokyo, JP;
Naoko Iwasaki, Tokyo, JP;
Shin Tahata, Tokyo, JP;
Toru Kokogawa, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A backlight device includes: a first prism sheet which has a triangular prism row on a major surface thereof; a first light source which emits light having directivity in a slanted direction with respect to a normal line direction of a light outgoing surface of the first prism sheet in opposite side to the triangular prism row side so as to enter into the triangular prism row of the first prism sheet; and a second light source which emits light having directivity in the normal line direction of the light outgoing surface of the first prism sheet so as to enter into the triangular prism row of the first prism sheet.