US 12,490,620 B2
Organic light emitting display device including overcoat layer having colored particles
Wonjin Choi, Seoul (KR); and ChaeKyung Lim, Seoul (KR)
Assigned to LG Display Co., Ltd, (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Sep. 12, 2022, as Appl. No. 17/942,198.
Claims priority of application No. 10-2021-0124395 (KR), filed on Sep. 16, 2021; and application No. 10-2022-0067239 (KR), filed on May 31, 2022.
Prior Publication US 2023/0078264 A1, Mar. 16, 2023
Int. Cl. H10K 59/38 (2023.01); H10K 50/844 (2023.01); H10K 59/12 (2023.01); G02B 5/20 (2006.01)
CPC H10K 59/38 (2023.02) [H10K 50/844 (2023.02); H10K 59/12 (2023.02); G02B 5/201 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An organic light emitting display device, comprising:
a first subpixel, a second subpixel, and a third subpixel disposed in an active area on a substrate;
an organic light emitting element disposed on the substrate;
an encapsulation layer disposed on the organic light emitting element;
a color filter layer disposed on the encapsulation layer;
an overcoat layer in an opaque color, disposed on the color filter layer and including colored particles; and
an adhesive layer disposed on the overcoat layer,
wherein the overcoat layer differs in color from the color filter layer and the adhesive layer, and
wherein the color filter layer includes a first color filter disposed in the first subpixel, a second color filter disposed in the second subpixel, and a third color filter disposed in the third subpixel, and a boundary area between different color filters includes at least one step, wherein the at least one step is configured to have different levels of top surfaces of the first, second and third color filters.