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:
Aug. 04, 2020
Filed:
Sep. 19, 2018
Lg Display Co., Ltd., Seoul, KR;
LG DISPLAY CO., LTD., Seoul, KR;
Abstract
A backlight unit includes a plurality of light emitting diode (LED) packages on a top surface of a circuit board, an encapsulation member located on the circuit board and covering the plurality of LED packages, and an integrated pattern sheet on the encapsulation member. The integrated pattern sheet includes a base layer, a plurality of reflective patterns at a bottom surface of the base layer and respectively corresponding to the plurality of LED packages, and a plurality of diffusion patterns at a top surface of the base layer, wherein the reflective patterns are configured with a relational expression of c+(t2−t1)*tan {(sin(1/n)}>d<1.8p, where c, t1 and p are a width, a height and a pitch of the LED package, respectively, t2 and n are a height and a refractive index of the encapsulation member, respectively, and d is a width of the reflective pattern.