US 11,696,468 B2
Display apparatus
Chiwook An, Yongin-si (KR); Soonil Jung, Yongin-si (KR); and Sanghyun Choi, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Dec. 27, 2021, as Appl. No. 17/562,955.
Application 17/562,955 is a division of application No. 16/717,873, filed on Dec. 17, 2019, granted, now 11,217,777.
Claims priority of application No. 10-2019-0050722 (KR), filed on Apr. 30, 2019.
Prior Publication US 2022/0123269 A1, Apr. 21, 2022
Int. Cl. H01L 51/52 (2006.01); G06F 3/044 (2006.01); H01L 27/32 (2006.01); H10K 50/858 (2023.01); H10K 50/844 (2023.01); H10K 59/12 (2023.01); H10K 59/40 (2023.01)
CPC H10K 50/858 (2023.02) [G06F 3/044 (2013.01); H10K 50/844 (2023.02); H10K 59/12 (2023.02); H10K 59/40 (2023.02)] 8 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a display element configured to emit light;
a first refractive layer on the display element, the first refractive layer having a top surface with a concave surface corresponding to the display element;
a light extraction pattern on the concave surface of the first refractive layer and having an island shape, the light extraction pattern having a size less than an area of the concave surface in a plan view; and
a second refractive layer on the first refractive layer, the second refractive layer covering the first refractive layer and the light extraction pattern.