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Patent Searching and Data


Title:
DIFFRACTIVE LIGHT GUIDE PLATE AND METHOD FOR MANUFACTURING DIFFRACTIVE LIGHT GUIDE PLATE
Document Type and Number:
WIPO Patent Application WO/2019/083247
Kind Code:
A1
Abstract:
One embodiment of the present invention provides a diffractive light guide plate comprising a first diffractive substrate and a second diffractive substrate disposed on the first diffractive substrate, wherein: the first diffractive substrate comprises a first diffractive lattice layer on one surface thereof and a second diffractive lattice layer on the other surface thereof; the second diffractive substrate comprises a third diffractive lattice layer on one surface thereof and a stress compensation layer on the other surface thereof; and the first diffractive lattice layer separates light having a wavelength of 550nm-700nm inclusive, the second diffractive lattice layer separates light having a wavelength of 400nm-550nm inclusive, the third diffractive lattice layer separates light having a wavelength of 450nm-650nm inclusive, and the stress compensation layer has a stress in the same direction as a stress of the third diffractive lattice layer.

Inventors:
YOON, Jung Hwan (LG Chem Research Park, 188 Munji-ro,Yuseong-gu, Daejeon, 34122, KR)
SHIN, Bu Gon (LG Chem Research Park, 188 Munji-ro,Yuseong-gu, Daejeon, 34122, KR)
PARK, Jeong Ho (LG Chem Research Park, 188 Munji-ro,Yuseong-gu, Daejeon, 34122, KR)
HER, Eun Kyu (LG Chem Research Park, 188 Munji-ro,Yuseong-gu, Daejeon, 34122, KR)
CHOO, So Young (LG Chem Research Park, 188 Munji-ro,Yuseong-gu, Daejeon, 34122, KR)
Application Number:
KR2018/012545
Publication Date:
May 02, 2019
Filing Date:
October 23, 2018
Export Citation:
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Assignee:
LG CHEM, LTD. (128 Yeoui-daero, Yeongdeungpo-gu, Seoul, 07336, KR)
International Classes:
G02B5/18; F21V8/00
Foreign References:
KR100779693B12007-11-26
JP2005530338A2005-10-06
KR20130000756A2013-01-03
KR20150120000A2015-10-27
JP2015099238A2015-05-28
Attorney, Agent or Firm:
PCR INTELLECTUAL PROPERTY LAW FIRM (6F Intel Building, 70 Seolleung-ro 90-gil,Gangnam-gu, Seoul, 06194, KR)
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