US 12,075,642 B2
Light-emitting device, display device, and electronic device
Satoshi Seo, Kanagawa (JP); and Shunpei Yamazaki, Tokyo (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., (JP)
Appl. No. 15/734,633
Filed by Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken (JP)
PCT Filed May 31, 2019, PCT No. PCT/IB2019/054510
§ 371(c)(1), (2) Date Dec. 3, 2020,
PCT Pub. No. WO2019/234562, PCT Pub. Date Dec. 12, 2019.
Claims priority of application No. 2018-108414 (JP), filed on Jun. 6, 2018; application No. 2018-108428 (JP), filed on Jun. 6, 2018; and application No. 2019-007585 (JP), filed on Jan. 21, 2019.
Prior Publication US 2021/0234112 A1, Jul. 29, 2021
Int. Cl. H10K 50/115 (2023.01); H10K 50/854 (2023.01); H10K 59/121 (2023.01); H10K 59/38 (2023.01)
CPC H10K 50/115 (2023.02) [H10K 50/854 (2023.02); H10K 59/121 (2023.02); H10K 59/38 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a first pixel comprising a first light-emitting element and a light-scattering layer; and
a second pixel comprising a second light-emitting element and a first color conversion layer,
wherein an emission center substance in each of the first light-emitting element and the second light-emitting element is an organic compound,
wherein the light-scattering layer comprises a first substance that scatters light emitted from the first light-emitting element,
wherein the first color conversion layer comprises a second substance that emits light by absorbing light emitted from the second light-emitting element,
wherein the first light-emitting element and the second light-emitting element have a microcavity structure,
wherein light emitted from the first pixel has a first color,
wherein light emitted from the second pixel has a second color,
wherein a third color is different from the first color and the second color,
wherein light with the first color is extracted from the first pixel via the light-scattering layer, and
wherein light with the third color is extracted from the second pixel without going through the light-scattering layer.