US 11,925,051 B2
Display device including an encapsulation layer including porous layer
Yong Tack Kim, Yongin-si (KR); Eung Seok Park, Seoul (KR); Jae Hyuk Lee, Cheonan-si (KR); Yoon Hyeung Cho, Yongin-si (KR); and Dong Uk Choi, Sejong-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on May 7, 2021, as Appl. No. 17/315,009.
Claims priority of application No. 10-2020-0105185 (KR), filed on Aug. 21, 2020.
Prior Publication US 2022/0059799 A1, Feb. 24, 2022
Int. Cl. H10K 50/844 (2023.01); H10K 50/86 (2023.01); H10K 59/124 (2023.01); H10K 59/38 (2023.01)
CPC H10K 50/844 (2023.02) [H10K 50/865 (2023.02); H10K 59/124 (2023.02); H10K 59/38 (2023.02)] 23 Claims
OG exemplary drawing
 
1. A display device comprising:
a first base having a display area and a non-display area;
light-emitting elements on the first base, the light-emitting elements being located in the display area; and
an encapsulation layer over the light-emitting elements,
wherein the encapsulation layer comprises:
a first inorganic layer;
an organic layer on the first inorganic layer; and
a second inorganic layer on the organic layer,
wherein the first inorganic layer comprises:
a first buffer layer on the light-emitting elements;
a first barrier layer on the first buffer layer;
a first porous layer on the first barrier layer;
a second barrier layer on the first porous layer; and
a second buffer layer on the second barrier layer,
wherein a refractive index of the first buffer layer, a refractive index of the first barrier layer, and a refractive index of the first porous layer are different from one another, and
wherein the refractive index of the first porous layer is smaller than the refractive index of the first buffer layer and the refractive index of the first barrier layer.