US 12,457,857 B2
Display device with different intervals between the edge of the convex surface and the edge of the emission area
Byeong Hee Won, Incheon (KR); Young Chan Kim, Incheon (KR); Ju Hwa Ha, Seoul (KR); and Jong Ho Hong, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Sep. 14, 2022, as Appl. No. 17/932,032.
Claims priority of application No. 10-2021-0182617 (KR), filed on Dec. 20, 2021.
Prior Publication US 2023/0200141 A1, Jun. 22, 2023
Int. Cl. H10K 59/122 (2023.01); G02B 27/01 (2006.01); H10K 50/858 (2023.01)
CPC H10K 59/122 (2023.02) [G02B 27/0172 (2013.01); H10K 50/858 (2023.02); G02B 2027/0178 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device, comprising:
a substrate comprising a plurality of pixels arranged along a first direction and a second direction;
a pixel defining film disposed on the substrate, disposed along a boundary of a pixel among the plurality of pixels, and defining an emission area;
an emission layer disposed in the emission area defined by the pixel defining film;
a first refraction film disposed on the pixel defining film and the emission layer and having a first refractive index; and
a second refraction film covering the first refraction film and having a second refractive index different from the first refractive index,
wherein the second refraction film comprises a reference surface and a convex surface convexly protruding from the reference surface, the convex surface overlapping the emission area,
each of the emission area and the convex surface comprises a first edge and a second edge extending in a first diagonal direction crossing the first direction and the second direction,
the first edge and the second edge of the convex surface are positioned outside the first edge and the second edge of the emission area, respectively,
a first interval between the first edge of the convex surface and the first edge of the emission area is greater than a second interval between the second edge of the convex surface and the second edge of the emission area, and
a center of the convex surface is not aligned with a center of the emission layer.