Title:
LIGHT-EMITTING DEVICE, LIGHT-EMITTING APPARATUS, DISPLAY APPARATUS, ELECTRONIC APPARATUS, AND LIGHTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/034413
Kind Code:
A1
Abstract:
Provided is a novel light-emitting device that has excellent convenience, usefulness, and reliability. The light-emitting device has a function for emitting light and comprises a first electrode, a second electrode, and a unit, wherein the light has a maximum peak at a wavelength (λ), the second electrode has a region overlapping the first electrode, and the unit includes a region sandwiched between the first electrode and the second electrode. The unit has a first layer, a second layer, and a third layer. The first layer has a region sandwiched between the second layer and the third layer, the first layer including a light-emitting material. The second layer has a fourth layer and a fifth layer, the fifth layer having a region sandwiched between the fourth layer and the first layer. The fourth layer includes a first organic compound, the first organic compound having a first refractive index with respect to the light having the wavelength (λ). The fifth layer is in contact with the fourth layer. The fifth layer includes a second organic compound, the second organic compound having a second refractive index with respect to the light having the wavelength (λ). The second refractive index is smaller than the first refractive index.
Inventors:
WATABE TAKEYOSHI (JP)
UEDA AIRI (JP)
KIDO HIROMITSU (JP)
OHSAWA NOBUHARU (JP)
SEO SATOSHI (JP)
UEDA AIRI (JP)
KIDO HIROMITSU (JP)
OHSAWA NOBUHARU (JP)
SEO SATOSHI (JP)
Application Number:
PCT/IB2021/056834
Publication Date:
February 17, 2022
Filing Date:
July 28, 2021
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
H01L27/32; H01L51/50; H05B33/02; H05B33/24
Foreign References:
| CN110950762A | 2020-04-03 | |||
| JP2019505566A | 2019-02-28 | |||
| JP2007311759A | 2007-11-29 | |||
| JP2009147276A | 2009-07-02 | |||
| CN110373183A | 2019-10-25 | |||
| CN110343048A | 2019-10-18 | |||
| JP2021118358A | 2021-08-10 |
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