Title:
LIGHT-EMITTING ELEMENT, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/192157
Kind Code:
A1
Abstract:
A light-emitting element comprising a reflection electrode, a transparent electrode, a light-emitting layer that is provided between the reflection electrode and the transparent electrode and contains quantum dots, and a selective reflection layer that is provided on the reverse side of the light-emitting layer from the transparent electrode and has a reflection range with a higher reflectivity than other ranges, wherein: a wavelength (λt2) at the longer-wavelength end of the reflection range of the selective reflection layer is longer than a wavelength (λ1) on the shorter side of a peak wavelength (λ0) of a light emission spectrum based on field emission of the quantum dots and at the half-value of a peak value in the light emission spectrum based on field emission of the quantum dots, and is shorter than a wavelength (λ2) on the longer side of the peak wavelength (λ0) of the light emission spectrum based on field emission of the quantum dots and at the half-value of the peak value of the light emission spectrum based on field emission of the quantum dots.
Inventors:
KITANO KEISUKE
YAMAMOTO MASAKI
YAMAMOTO MASAKI
Application Number:
PCT/JP2020/013726
Publication Date:
September 30, 2021
Filing Date:
March 26, 2020
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
G09F9/30; H01L27/32; H01L51/50; H05B33/02; H05B33/12; H05B33/14; H05B33/22; H05B33/24; H05B33/28
Domestic Patent References:
| WO2019103105A1 | 2019-05-31 |
Foreign References:
| US20150085223A1 | 2015-03-26 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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