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:
Jan. 21, 2020
Filed:
Jan. 27, 2017
Samsung Electronics Co., Ltd., Suwon-si, KR;
Dongsik Shim, Hwaseong-si, KR;
Dongouk Kim, Pyeongtaek-si, KR;
Hyunjoon Kim, Seoul, KR;
Joonyong Park, Suwon-si, KR;
Jihyun Bae, Seoul, KR;
Bongsu Shin, Seoul, KR;
Sunghoon Lee, Seoul, KR;
Jaeseung Chung, Suwon-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, KR;
Abstract
A directional backlight unit is provided, including a light guide plate, a light source, and a grating that is formed on a light-emitting surface of the light guide plate. The grating is configured such that an intensity of one ray of light, of the light irradiated by the light source and diffracted and emitted by the grating, is greater than a sum of intensities of all other rays of light, of the light irradiated by the light source and diffracted and emitted by the grating.