US 12,069,912 B2
Light emitting display apparatus including driving thin film transistor disposed in emission area
Hun Jang, Paju-si (KR); Daeyoung Seo, Paju-si (KR); and Soyoung Lee, Paju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Aug. 30, 2021, as Appl. No. 17/461,224.
Claims priority of application No. 10-2020-0116551 (KR), filed on Sep. 11, 2020.
Prior Publication US 2022/0085134 A1, Mar. 17, 2022
Int. Cl. H01L 29/08 (2006.01); G09G 3/3225 (2016.01); H10K 59/121 (2023.01); H10K 59/131 (2023.01)
CPC H10K 59/131 (2023.02) [G09G 3/3225 (2013.01); H10K 59/1213 (2023.02); H10K 59/1216 (2023.02)] 21 Claims
OG exemplary drawing
 
1. A light emitting display device comprising:
a pixel area having an emission area and a non-emission area on a substrate;
a light emitting diode disposed in the pixel area; and
a pixel driving circuit electrically connected with the light emitting diode, and having a driving thin film transistor disposed in the emission area,
wherein light emitted from the light emitting diode is emitted to the outside of the substrate by passing through the substrate,
wherein the pixel driving circuit includes a switching circuit disposed in the non-emission area, and a capacitor disposed between the driving thin film transistor and the switching circuit, and
wherein the capacitor includes:
a first capacitor electrode connected between a first source/drain electrode of the driving thin film transistor and a second switching thin film transistor of the switching circuit; and
a second capacitor electrode connected between a gate electrode of the driving thin film transistor and a first switching thin film transistor of the switching circuit, and overlapped with the first capacitor electrode.