US 11,812,632 B2
Display device having a color conversion pattern or wavelength conversion pattern disposed in each pixel on a light path extending from a light source to a viewer
Je Hong Choi, Suwon-si (KR); Jin Woo Park, Cheonan-si (KR); Sung Ho Seo, Hwaseong-si (KR); Seung Wook Chang, Suwon-si (KR); and Sang Woo Pyo, Seongnam-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Apr. 8, 2021, as Appl. No. 17/226,061.
Claims priority of application No. 10-2020-0077022 (KR), filed on Jun. 24, 2020.
Prior Publication US 2021/0408476 A1, Dec. 30, 2021
Int. Cl. H10K 50/844 (2023.01); H10K 50/84 (2023.01); H10K 50/858 (2023.01); H10K 59/38 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/844 (2023.02) [H10K 50/841 (2023.02); H10K 50/858 (2023.02); H10K 59/38 (2023.02); H10K 2102/351 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a first base;
a light emitting element which is disposed on the first base;
a capping layer which is disposed on the light emitting element, the capping layer comprising:
a first sub-capping layer disposed on the light emitting element; and
a second sub-capping layer disposed on the first sub-capping layer;
a thin-film encapsulation layer which is disposed on the capping layer and comprises an inorganic layer at a bottom of thin-film encapsulation layer; and
a wavelength conversion pattern which is disposed on the thin-film encapsulation layer and overlaps the light emitting element,
wherein a refractive index of the second sub-capping layer is greater than a refractive index of the inorganic layer and smaller than a refractive index of the first sub-capping layer, and
wherein the first sub-capping layer comprises an organic material.