US 12,336,359 B2
Display device
Joo Woan Cho, Seongnam-si (KR); Dae Ho Song, Hwaseong-si (KR); Tae Hee Lee, Hwaseong-si (KR); Hyung Il Jeon, Seoul (KR); and Byeong Hwa Choi, Seoul (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jun. 17, 2024, as Appl. No. 18/745,970.
Application 18/745,970 is a continuation of application No. 17/570,112, filed on Jan. 6, 2022, granted, now 12,015,048.
Claims priority of application No. 10-2021-0056582 (KR), filed on Apr. 30, 2021.
Prior Publication US 2024/0339489 A1, Oct. 10, 2024
Int. Cl. H01L 23/00 (2006.01); H01L 23/48 (2006.01); H01L 25/18 (2023.01); H10H 29/14 (2025.01); H10D 84/80 (2025.01)
CPC H10H 29/142 (2025.01) [H01L 23/481 (2013.01); H01L 24/06 (2013.01); H01L 25/18 (2013.01); H01L 24/05 (2013.01); H01L 24/08 (2013.01); H01L 24/16 (2013.01); H01L 24/48 (2013.01); H01L 2224/05025 (2013.01); H01L 2224/05541 (2013.01); H01L 2224/0613 (2013.01); H01L 2224/06181 (2013.01); H01L 2224/08225 (2013.01); H01L 2224/16145 (2013.01); H01L 2224/48229 (2013.01); H10D 84/80 (2025.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a first substrate comprising a display area, a non-display area, and a plurality of pixel circuit units in the display area and the non-display area;
a light emitting element on the first substrate in the display area, the light emitting element being electrically connected to at least one of the pixel circuit units;
a hole mask layer on the first substrate and comprising a hole that overlaps the light emitting element;
a second substrate on the hole mask layer and comprising an open hole that overlaps the hole; and
a light exit pattern in the open hole of the second substrate,
wherein the light exit pattern comprises a first part in the open hole and a second part protruding from an upper surface of the second substrate, wherein a refractive index of the light exit pattern is different from a refractive index of the second substrate.