US 12,293,701 B2
Display panel and display device
Huanxi Zhang, Hubei (CN); and Cheng Wang, Hubei (CN)
Assigned to WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Hubei (CN)
Appl. No. 18/260,131
Filed by WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Hubei (CN)
PCT Filed May 12, 2023, PCT No. PCT/CN2023/094047
§ 371(c)(1), (2) Date Jun. 30, 2023,
PCT Pub. No. WO2024/216689, PCT Pub. Date Oct. 24, 2024.
Claims priority of application No. 202310439309.X (CN), filed on Apr. 21, 2023.
Prior Publication US 2024/0379045 A1, Nov. 14, 2024
Int. Cl. G09G 3/32 (2016.01); G09G 3/3266 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 3/3266 (2013.01); G09G 2310/0267 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display panel, comprising a display area and a hole-digging area surrounded by the display area, wherein the display panel comprises a plurality of light-emitting devices arranged in an array and a pixel driving circuit driving the plurality of light-emitting devices, and the pixel driving circuit comprises:
a driving transistor;
a switching transistor, connected to the driving transistor at a first node;
a compensation transistor, connected to a first scanning signal line, wherein the compensation transistor, the driving transistor, and the plurality of light-emitting devices are connected at a second node; and
a first initialization transistor, connected to a second scanning signal line, wherein the first initialization transistor, the driving transistor, and the compensation transistor are connected at a third node;
wherein part of the first scanning signal line comprises a first part located at a left side of the hole-digging area, a second part located at a right side of the hole-digging area, and a third part connected to the first part and the second part, and an extension line of the first part passes through the hole-digging area; and/or, part of the second scanning signal line comprises a fourth part located at the left side of the hole-digging area, a fifth part located at the right side of the hole-digging area, and a sixth part connected to the fourth part and the fifth part, and an extension line of the fourth part passes through the hole-digging area; and
the display panel further comprising:
a substrate;
a first active layer, disposed on a side of the substrate;
a first metal layer, disposed on a side of the first active layer away from the substrate;
a second metal layer, disposed on a side of the first metal layer away from the first active layer;
a second active layer, disposed on a side of the second metal layer away from the first metal layer; and
a third metal layer, disposed on a side of the second active layer away from the second metal layer;
wherein the third part is disposed in at least one of the first metal layer, the second metal layer, and the third metal layer, and the sixth part is disposed in at least one of the first metal layer, the second metal layer, and the third metal layer.