US 12,243,481 B2
Display panel and display device
Shuyuan Zhang, Wuhan (CN)
Assigned to WHUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Wuhan (CN)
Appl. No. 18/029,479
Filed by WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Wuhan (CN)
PCT Filed Mar. 29, 2023, PCT No. PCT/CN2023/084584
§ 371(c)(1), (2) Date Mar. 30, 2023,
PCT Pub. No. WO2024/016717, PCT Pub. Date Jan. 25, 2024.
Claims priority of application No. 202210862525.0 (CN), filed on Jul. 20, 2022.
Prior Publication US 2024/0371321 A1, Nov. 7, 2024
Int. Cl. G09G 3/3233 (2016.01); H10K 59/121 (2023.01)
CPC G09G 3/3233 (2013.01) [H10K 59/1213 (2023.02); G09G 2300/0452 (2013.01); G09G 2300/0852 (2013.01); G09G 2300/0861 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0242 (2013.01); G09G 2340/0435 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a substrate;
a driving circuit layer, disposed on one side of the substrate, the driving circuit layer comprising:
a plurality of pixel driving circuits, each of the pixel driving circuits comprising a first transistor, a second transistor and a first node, wherein a gate of the first transistor is electrically connected to the first node, a source and a drain of the first transistor and a corresponding light emitting device are electrically connected between a first voltage terminal and a second voltage terminal, a source and a drain of the second transistor are electrically connected between a reset signal line and a corresponding anode of the corresponding light emitting device; and
a light emitting device layer, disposed on a side of the driving circuit layer facing away from the substrate, the light emitting device layer comprising:
a plurality of the light emitting devices, comprising:
a first light emitting device, configured to emit a first color light having a first wavelength; and
a second light emitting device, configured to emit a second color light having a second wavelength;
wherein the plurality of the pixel driving circuit comprises a first pixel driving circuit and a second pixel driving circuit, the first pixel driving circuit is electrically connected to the first light emitting device, and the second pixel driving circuit is electrically connected to the second light emitting device;
wherein the first wavelength is greater than the second wavelength; the reset signal line and the first node of the first pixel driving circuit have a first coupling capacitor, the reset signal line and the first node of the second pixel driving circuit have a second coupling capacitor, and a first coupling capacitance of the first coupling capacitor is greater than a second coupling capacitance of the second coupling capacitor.