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:
Nov. 01, 2022
Filed:
Aug. 24, 2020
Samsung Display Co., Ltd., Yongin-si, KR;
Seoul National University R&db Foundation, Seoul, KR;
Sang Ho Kim, Yongin-si, KR;
Duk Ho Lee, Seoul, KR;
Young Chan Kim, Yongin-si, KR;
Ki Seung Bang, Seoul, KR;
Chang Won Jang, Seoul, KR;
Ji Won Lee, Yongin-si, KR;
Cheon Myeong Lee, Yongin-si, KR;
Byoung Ho Lee, Seoul, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Seoul National University R&DB Foundation, Seoul, KR;
Abstract
A backlight device includes: a light source to emit coherent light; an optical path difference generator on the light source, the optical path difference generator including an incident surface and a plurality of light emitting surfaces, the light emitting surfaces being parallel to the incident surface and having different separation distances from the incident surface; a light condenser on the optical path difference generator; a diffuser on the light condenser; and a collimator on the diffuser.