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:
Oct. 14, 2025
Filed:
Aug. 13, 2020
Lg Chem, Ltd., Seoul, KR;
Jaeyoung Kim, Daejeon, KR;
Hee Jung Choi, Daejeon, KR;
Yeongrae Chang, Daejeon, KR;
Heon Kim, Daejeon, KR;
Hye Min Kim, Daejeon, KR;
Youngsuk Kim, Daejeon, KR;
Soonhwa Jung, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
A diffraction light guide plate comprising an optical layer having diffraction lattice pattern formed as an integrated structure without an interface on one surface thereof, where the optical layer having diffraction lattice pattern is a continuous phase of polymer comprising an episulfide compound, a thiol compound, and an aromatic cyclic compound having two or more hydroxyl groups, the diffraction light guide plate having excellent thickness uniformity and flatness as well as low haze and excellent visibility, and excellent mechanical properties such as pencil hardness and strength, and a method for manufacturing the diffraction light guide plate.