US 12,341,140 B2
Display panel and display device
Xiao Chi, Shanghai (CN); Jujian Fu, Shanghai (CN); and Ping An, Shanghai (CN)
Assigned to Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed by Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed on Oct. 28, 2021, as Appl. No. 17/512,689.
Claims priority of application No. 202110157343.9 (CN), filed on Feb. 4, 2021; and application No. 202110231403.7 (CN), filed on Mar. 2, 2021.
Prior Publication US 2022/0052034 A1, Feb. 17, 2022
Int. Cl. H01L 25/16 (2023.01); H10D 86/40 (2025.01); H10D 86/60 (2025.01); H10H 20/856 (2025.01); H10H 20/857 (2025.01)
CPC H01L 25/167 (2013.01) [H10D 86/441 (2025.01); H10D 86/60 (2025.01); H10H 20/856 (2025.01); H10H 20/857 (2025.01)] 12 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a base substrate;
a light-emitting element, wherein the light-emitting element is located on the base substrate;
a first electrode and a second electrode, wherein the first electrode and the second electrode are electrically connected to the light-emitting element, are both located on a side of the light-emitting element facing the base substrate or both located on a side of the light-emitting element facing away from the base substrate, and provide voltage signals for the light-emitting element;
a first reflective layer, wherein the first reflective layer is located on a side of the light-emitting element facing the base substrate, and with a direction perpendicular to the base substrate as a projection direction, the first reflective layer covers the light-emitting element; and
a voltage signal line, wherein the voltage signal line is located on a side of the light-emitting element facing the base substrate,
wherein the first electrode comprises a first extension part, the second electrode comprises a second extension part, at least one of the first extension part or the second extension part is connected to the voltage signal line, and with the direction perpendicular to the base substrate as the projection direction, at least one of the first extension part or the second extension part does not overlap the first reflective layer;
wherein the display panel comprises a pixel circuit, the pixel circuit comprises a first transistor and a second transistor, the first transistor comprises a first gate, a first active layer, a first source, and a first drain, and the second transistor comprises a second gate, a second active layer, a second source, and a second drain;
wherein the display panel comprises a first metal layer, wherein the first metal layer is located on a side of any one of the first source, the first drain, the second source, or the second drain facing away from the base substrate, and
wherein the first reflective layer is located on the first metal layer.