US 12,342,705 B2
Light emitting display device including a first spacer structure surrounding a subpixel in a loop pattern
Seung Ho Heo, Paju-si (KR); Chung Hoon Lee, Paju-si (KR); Dong Hyun Lee, Incheon (KR); and Dong Min Jang, Incheon (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Jun. 11, 2021, as Appl. No. 17/345,864.
Claims priority of application No. 10-2020-0078445 (KR), filed on Jun. 26, 2020.
Prior Publication US 2021/0408163 A1, Dec. 30, 2021
Int. Cl. H10K 59/35 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 59/122 (2023.01); H10K 59/80 (2023.01); H01L 27/32 (2006.01); H01L 51/50 (2006.01)
CPC H10K 59/353 (2023.02) [H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/171 (2023.02); H10K 59/122 (2023.02); H10K 59/8723 (2023.02); H10K 59/80522 (2023.02)] 22 Claims
OG exemplary drawing
 
1. A light emitting display device comprising:
a substrate comprising a first subpixel, a second subpixel, and a third subpixel arranged to neighbor one another, each of the first subpixel, the second subpixel, and the third subpixel comprising an emission part and a non-emission part to surround the emission part;
a bank at non-emission parts of the first subpixel, the second subpixel, and the third subpixel;
first electrodes covered with the bank and respectively at the first subpixel, the second subpixel, and the third subpixel to expose respective emission parts;
a first spacer structure on the bank;
a common layer structure located on the first electrodes and the first spacer structure and disconnected at an edge of the first spacer structure; and
a second electrode on the common layer structure,
wherein the first spacer structure reduces in width in a direction toward the substrate,
wherein the first spacer structure includes a first pattern that at least partially surrounds all sides of the emission part of the first subpixel, a second pattern that at least partially surrounds all sides of the emission part of the second subpixel, and a third pattern that at least partially surrounds sides of the emission part of the third subpixel,
wherein the first pattern and the second pattern are independently provided between the first subpixel and the second subpixel,
wherein at the non-emission part between the first subpixel and the second subpixel, the first spacer structure includes a first open region along a first direction in the first pattern and a second open region along the first direction in the second pattern; and
wherein an extension is connected to the third pattern along the first direction, the extension between the first open region and the second open region.