US 12,439,777 B2
Display apparatus and method of manufacturing the same
Nakcho Choi, Yongin-si (KR); Chungi You, Yongin-si (KR); Jaehun Lee, Yongin-si (KR); Jihee Kim, Yongin-si (KR); and Yangho Jung, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Aug. 12, 2020, as Appl. No. 16/991,410.
Claims priority of application No. 10-2020-0003878 (KR), filed on Jan. 10, 2020.
Prior Publication US 2021/0217839 A1, Jul. 15, 2021
Int. Cl. H01L 27/32 (2006.01); H01L 23/29 (2006.01); H10K 59/122 (2023.01); H10K 59/123 (2023.01); H10K 59/131 (2023.01); H10K 59/80 (2023.01); H10K 71/00 (2023.01); H10K 59/12 (2023.01)
CPC H10K 59/123 (2023.02) [H10K 59/122 (2023.02); H10K 59/131 (2023.02); H10K 59/8792 (2023.02); H10K 71/00 (2023.02); H10K 59/1201 (2023.02)] 16 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a substrate;
a thin film transistor on an upper surface of the substrate, the thin film transistor comprising at least one of a source electrode or a drain electrode;
a pixel electrode electrically connected to the thin film transistor;
a first transparent planarization layer between the pixel electrode and an upper surface of the at least one of the source electrode or the drain electrode and comprising an organic material comprising at least one selected from the group consisting of benzocyclobutene, hexamethyldisiloxane, polymethylmethacrylate, polystyrene, and polymer derivatives having phenol groups, acryl-based polymer, imide-based polymer, aryl ether-based polymer, amide-based polymer, fluoride-based polymer, p-xylene-based polymer, vinyl alcohol-based polymer, and blends thereof, the first transparent planarization layer comprising a first contact hole for electrically connecting the thin film transistor to the pixel electrode;
a second transparent planarization layer between the substrate and the first transparent planarization layer, wherein the second transparent planarization layer covers at least one of the source electrode or the drain electrode;
a contact metal layer between the second transparent planarization layer and the first transparent planarization layer, wherein the contact metal layer is electrically connected to the pixel electrode and at least one of the source electrode or the drain electrode; and
a colored planarization layer on the first transparent planarization layer and comprising a colored pigment or carbon black, the colored planarization layer comprising a second contact hole for electrically connecting the thin film transistor to the pixel electrode,
wherein the first contact hole has a first width, and the second contact hole has a second width that is greater than the first width, and the pixel electrode extends through the second contact hole from an upper surface of the colored planarization layer to directly contact and extend along an upper surface of the first transparent planarization layer that extends parallel to the upper surface of the substrate, and
wherein the first width is about 3 μm to about 5 μm and the second width is about 5 μm to about 7 μm.