DIFFRACTION LIGHT-GUIDE PLATE AND DISPLAY DEVICE COMPRISING SAME

Title:

DIFFRACTION LIGHT-GUIDE PLATE AND DISPLAY DEVICE COMPRISING SAME

Document Type and Number:

WIPO Patent Application WO/2020/040535

Kind Code:

A1

Abstract:

An embodiment according to one aspect of the present invention provides a diffraction light-guide plate comprising: a light-guide part for guiding light; an input diffraction optical element for diffracting light, which has been output from a light source and then input thereto, so that the light can be guided on the light guide part; and two diffraction optical elements configured to receive the diffracted light from the input diffraction optical element and allow the received light to be one-dimensionally extended by diffraction, wherein: each of the two diffraction optical elements is configured to receive extended light from another diffraction optical element and allow the received light to be output from the light guide part by diffraction; and the two diffraction optical elements do not form an area, in which the two diffraction optical elements overlap each other, on the light guide part.

Inventors:

PARK SEONG MIN (KR)
PARK JEONG HO (KR)
HAN SANG CHOLL (KR)
SHIN BU GON (KR)

Application Number:

PCT/KR2019/010609

Publication Date:

February 27, 2020

Filing Date:

August 21, 2019

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

G02B5/18

Foreign References:

KR20170039655A	2017-04-11
US20180172995A1	2018-06-21
US20170315346A1	2017-11-02
US20060132914A1	2006-06-22
US20170299864A1	2017-10-19

Other References: