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:
Mar. 10, 2020
Filed:
Jul. 21, 2017
Samsung Electronics Co., Ltd., Suwon-si, KR;
Hyunjoon Kim, Seoul, KR;
Bongsu Shin, Seoul, KR;
Dongouk Kim, Pyeongtaek-si, KR;
Joonyong Park, Suwon-si, KR;
Jihyun Bae, Seoul, KR;
Dongsik Shim, Hwaseong-si, KR;
Sunghoon Lee, Seoul, KR;
Jaeseung Chung, Suwon-si, KR;
Seokho Song, Seoul, KR;
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, KR;
Abstract
A directional backlight unit and an image display apparatus including the directional backlight unit are provided. The directional backlight unit includes at least one light source and a light guide plate that guides light emitted by the light source. An interval between grating patterns formed on the light guide plate satisfies at least one condition of a first range and a second range in order to minimize a spreading of light caused by the grating patterns.