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:
May. 31, 2022
Filed:
Jun. 18, 2019
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Eun Kyu Her, Daejeon, KR;
Song Ho Jang, Daejeon, KR;
Chung Wan Kim, Daejeon, KR;
Bu Gon Shin, Daejeon, KR;
Jeong Ho Park, Daejeon, KR;
Jung Hwan Yoon, Daejeon, KR;
So Young Choo, Daejeon, KR;
Assignee:
LG CHEM, LTD, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 37/32 (2006.01); H01L 21/3065 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
H01L 21/3065 (2013.01); G02B 6/0065 (2013.01); H01J 37/32422 (2013.01); H01J 37/32651 (2013.01);
Abstract
The present invention relates to a method of manufacturing a mold for a diffraction grating light guide plate by using two mask films, the mold having first to fourth pattern portions provided on one surface thereof, and to a method of manufacturing a diffraction grating light guide plate.