Invention Grant
- Patent Title: Method of manufacturing mold for diffraction grating light guide plate and method of manufacturing diffraction grating light guide plate
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Application No.: US16958602Application Date: 2019-06-18
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Publication No.: US11348799B2Publication Date: 2022-05-31
- Inventor: Eun Kyu Her , Song Ho Jang , Chung Wan Kim , Bu Gon Shin , Jeong Ho Park , Jung Hwan Yoon , So Young Choo
- Applicant: LG CHEM, LTD.
- Applicant Address: KR Seoul
- Assignee: LG CHEM, LTD.
- Current Assignee: LG CHEM, LTD.
- Current Assignee Address: KR Seoul
- Agency: Dentons US LLP
- Priority: KR10-2018-0070583 20180620
- International Application: PCT/KR2019/007323 WO 20190618
- International Announcement: WO2019/245257 WO 20191226
- Main IPC: H01J37/32
- IPC: H01J37/32 ; H01L21/3065 ; F21V8/00
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.
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