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:
May. 12, 2020
Filed:
Nov. 06, 2017
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Naru Usukura, Sakai, JP;
Takafumi Shimatani, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
A display device includes a display panel, a lighting device having a light emission surface, a center directive light refraction member imparting a refraction effect to light exiting through the light emission surface to be directed to a middle section of the display panel to generate a much light emission angle range where an emission light quantity is much and a less light emission angle range where the light emission quantity is less in a luminance angle distribution, and an asymmetric light refraction member configured to impart an asymmetric refraction effect to the emission light such that among emission light rays exiting the center directive light refraction member, light rays in the less light emission angle range is directed toward the less light emission angle range while a part of light rays in the much light emission angle range is directed toward the less light emission angle range.