Title:
回折導光板およびこれを含むディスプレイ装置
Document Type and Number:
Japanese Patent JP7063498
Kind Code:
B2
Abstract:
The present disclosure provides a diffraction light guide plate including: a light guide unit; an input diffraction optical element configured to diffract light which is outputted from a light source and inputted to the input diffraction optical element, to guide the inputted light on the light guide unit; and two diffraction optical elements configured to receive the diffracted light from the input diffraction optical element and one-dimensionally expand the received light by diffraction, wherein each of the two diffraction optical elements receives the expanded light from the other of the diffraction optical elements and outputs the received light from the light guide unit by the diffraction, and there is no region where the two diffraction optical elements overlap each other on the light guide unit.
Inventors:
Song Min Park
John Ho Park
Sancheol Han
Boo Gong Shin
John Ho Park
Sancheol Han
Boo Gong Shin
Application Number:
JP2020539818A
Publication Date:
May 09, 2022
Filing Date:
August 21, 2019
Export Citation:
Assignee:
LG HAUSYS,LTD.
International Classes:
G02B27/02; G02B5/18; G02B6/00
Domestic Patent References:
| JP2017528739A | ||||
| JP7270723A | ||||
| JP2015194654A |
Foreign References:
| WO2018125574A1 | ||||
| US20180172995 | ||||
| US20170315346 |
Attorney, Agent or Firm:
Shinya Mihiro
Takashi Watanabe
Takashi Watanabe