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 (KR)
SHIN BU GON (KR)
PARK JEONG HO (KR)
HER EUN KYU (KR)
CHOO SO YOUNG (KR)
SHIN BU GON (KR)
PARK JEONG HO (KR)
HER EUN KYU (KR)
CHOO SO YOUNG (KR)
Application Number:
PCT/KR2018/012545
Publication Date:
May 02, 2019
Filing Date:
October 23, 2018
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
G02B5/18; F21V8/00
Foreign References:
| KR100779693B1 | 2007-11-26 | |||
| JP2005530338A | 2005-10-06 | |||
| KR20130000756A | 2013-01-03 | |||
| KR20150120000A | 2015-10-27 | |||
| JP2015099238A | 2015-05-28 |
Other References:
See also references of EP 3660551A4
Attorney, Agent or Firm:
PCR INTELLECTUAL PROPERTY LAW FIRM (KR)
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