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:
Jun. 27, 2023
Filed:
Feb. 27, 2019
Lg Chem, Ltd., Seoul, KR;
Byung Mook Kim, Daejeon, KR;
Sunghak Bae, Daejeon, KR;
Do Ki Chang, Daejeon, KR;
Kyungki Hong, Daejeon, KR;
Dae Hee Lee, Daejeon, KR;
Sangcholl Han, Daejeon, KR;
Youngjin Kim, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
The present specification relates to a viewing angle compensation film, a polarizing plate including the same, and a display device including the same, and the viewing angle compensation film includes: a pattern layer; and a low refractive layer, in which a difference in refractive index between the pattern layer and the low refractive layer is 0.02 to 0.4, the pattern layer includes: a first surface which comprises a flat surface; and a second surface which faces the first surface and includes multiple protruding portions, each of the protruding portions includes a first inclined surface and a second inclined surface, an angle θbetween the first surface and the first inclined surface or a surface extending from the first inclined surface and an angle θbetween the first surface and the second inclined surface or a surface extending from the second inclined surface are different from each other, and an angle θ between the first inclined surface or the surface extending from the first inclined surface and the second inclined surface or the surface extending from the second inclined surface is 20° to 60°, such that there is an effect of improving a contrast ratio and a viewing angle.