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. 23, 2021
Filed:
Jan. 20, 2020
Sharp Kabushiki Kaisha, Sakai, JP;
Shugo Yagi, Yonago, JP;
Takeshi Ishida, Sakai, JP;
Yuuichi Kanbayashi, Sakai, JP;
Satoshi Tsubooka, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
First and second prism sheets have pluralities of first and second unit prisms, respectively, arranged along a first direction and extending along a second direction, each of which has a base that is parallel to the first direction and a pair of oblique sides standing from both ends, respectively, of the base, and an angle that a second LED facing oblique side, which is one of the oblique sides that faces toward the LED, forms with respect to the base in the first direction in the second unit prism is smaller than an angle that a first LED facing oblique side that faces toward the LED forms with respect to the base in the first direction in the first unit prism.