Title:
MICRO-LED DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/209031
Kind Code:
A1
Abstract:
Provided is a micro-LED display device that has excellent luminous efficiency and in which color mixture is suppressed. A micro-LED display device according to the present invention comprises, in this order from the back side: a micro-LED array substrate including a plurality of micro-LEDs; a sealing part that seals the plurality of micro-LEDs; a low-refractive-index layer; and a plurality of wavelength converting layers that are formed into partitions. Each of the wavelength converting layers is so formed as to pair up with a corresponding one of the micro-LEDs in the thickness direction. The refractive index of the low-refractive-index layer is lower than the refractive index of the sealing part and the refractive index of the wavelength converting layers. The difference between the refractive index of the low-refractive-index layer and the refractive index of the sealing part is equal to or greater than 0.10. The difference between the refractive index of the low-refractive-index layer and the refractive index of the wavelength converting layers is equal to or greater than 0.10.
Inventors:
YOSHIKAWA TAKAHIRO (JP)
HATTORI DAISUKE (JP)
MORISHIMA RYOTA (JP)
HATTORI DAISUKE (JP)
MORISHIMA RYOTA (JP)
Application Number:
PCT/JP2021/045554
Publication Date:
October 06, 2022
Filing Date:
December 10, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
H01L33/50; H01L33/52
Domestic Patent References:
| WO2019043844A1 | 2019-03-07 | |||
| WO2016204166A1 | 2016-12-22 |
Foreign References:
| JP2013254651A | 2013-12-19 | |||
| JP2016219675A | 2016-12-22 | |||
| JP2018032693A | 2018-03-01 | |||
| US20210057616A1 | 2021-02-25 | |||
| JP2015022072A | 2015-02-02 | |||
| JP2017187549A | 2017-10-12 |
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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