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:
Sep. 01, 2020
Filed:
Apr. 03, 2019
Samsung Electronics Co., Ltd., Suwon-si, KR;
German B. Dubinin, Krasnogorsk, RU;
Sergey E. Dubynin, Moscow, RU;
Aleksander V. Morozov, Podolsk, RU;
Andrey N. Putilin, Moscow, RU;
Sergey S. Kopenkin, Moscow, RU;
Yuriy P. Borodin, Moscow, RU;
Jungkwuen An, Suwon-si, KR;
Chilsung Choi, Suwon-si, KR;
Hongseok Lee, Seoul, KR;
Hoon Song, Yongin-si, KR;
Sunil Kim, Seoul, KR;
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, KR;
Abstract
Provided is a backlight unit including a light source emitting coherent light, a light guide plate propagating the light emitted by the light source, an input grating inputting the light from the light source into the light guide plate, an output grating provided on one surface of the light guide plate and diffracting light incident from inside the light guide plate and outputting the light, in a direction toward the outside of the light guide plate, a first recuperation element provided on one surface of the light guide plate and including a first recycle grating, and a second recuperation element provided opposite to the first recuperation element and directing, to the first recuperation element, incident light that is propagating inside the light guide plate.