US 12,356,839 B2
Display device having two organic refractive layers on a protruding inorganic layer and method for manufacturing same
Ki June Lee, Yongin-si (KR); Sang Woo Kim, Seoul (KR); Jung Ha Son, Yongin-si (KR); Byung Han Yoo, Suwon-si (KR); Gee Bum Kim, Seoul (KR); Tae Kyung Ahn, Pyeongtaek-si (KR); Jae Ik Lim, Hwaseong-si (KR); and Chaun Gi Choi, Suwon-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Appl. No. 17/416,359
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
PCT Filed Oct. 25, 2019, PCT No. PCT/KR2019/095039
§ 371(c)(1), (2) Date Jun. 18, 2021,
PCT Pub. No. WO2020/130760, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 10-2018-0167747 (KR), filed on Dec. 21, 2018.
Prior Publication US 2022/0077427 A1, Mar. 10, 2022
Int. Cl. H10K 59/80 (2023.01); H10K 59/12 (2023.01); H10K 59/122 (2023.01); H10K 59/40 (2023.01)
CPC H10K 59/879 (2023.02) [H10K 59/122 (2023.02); H10K 59/40 (2023.02); H10K 59/873 (2023.02); H10K 59/1201 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate comprising a plurality of pixels;
a bank layer on the substrate along a boundary of each of the pixels, and configured to define a light-emitting area;
an organic light-emitting layer in the light-emitting area defined by the bank layer;
a thin-film sealing layer covering the organic light-emitting layer and the bank layer;
an inorganic layer comprising a base part on the thin-film sealing layer, and a protruding pattern part protruding from the base part in a thickness direction, the protruding pattern part comprising an upper surface, and a lateral surface overlapping with the upper surface of the protruding pattern part in the thickness direction;
a first-first refractive organic layer on the base part of the inorganic layer; and
a second refractive organic layer covering the first-first refractive organic layer and the inorganic layer, the second refractive organic layer having a refractive index higher than that of the first-first refractive organic layer,
wherein a lateral surface of the first-first refractive organic layer contacts the lateral surface of the protruding pattern part, and an upper surface of the first-first refractive organic layer protrudes in the thickness direction more than the upper surface of the protruding pattern part in the thickness direction.