US 12,336,391 B2
Display apparatus having a groove formed in a protrusion of a planarization layer
Joonsuk Lee, Paju-si (KR); SeJune Kim, Paju-si (KR); and Sangpil Park, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Apr. 29, 2022, as Appl. No. 17/733,307.
Claims priority of application No. 10-2021-0056432 (KR), filed on Apr. 30, 2021.
Prior Publication US 2022/0352263 A1, Nov. 3, 2022
Int. Cl. H10K 59/122 (2023.01); H10K 59/121 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 59/121 (2023.02)] 16 Claims
OG exemplary drawing
 
1. A display apparatus, comprising:
a substrate having a plurality of subpixels;
a planarization layer provided on the substrate, including a first area in which protrusions are formed and a second area positioned between the protrusions;
a first electrode provided on the planarization layer;
a bank provided on the first electrode;
a light emitting layer provided on the first electrode;
a second electrode provided on the light emitting layer; and
a first groove provided on an upper portion of the protrusion,
wherein the protrusion is provided between two adjacent subpixels,
wherein the first electrode covers a portion of the protrusion and the second area, and
wherein the bank is provided only on the upper portion of the protrusion.