US 12,462,753 B2
Composite driving circuit and display panel
Hao Zhang, Beijing (CN)
Assigned to BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., Beijing (CN)
Appl. No. 18/697,190
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Jun. 30, 2022, PCT No. PCT/CN2022/102642
§ 371(c)(1), (2) Date Mar. 29, 2024,
PCT Pub. No. WO2024/000349, PCT Pub. Date Jan. 4, 2024.
Prior Publication US 2024/0331635 A1, Oct. 3, 2024
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2310/08 (2013.01); G09G 2360/14 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display panel comprising a plurality of composite driving circuits and comprising light-emitting elements and photodetectors driven by the composite driving circuits, the composite driving circuit comprising a first pixel driving circuit configured to drive the light-emitting element and an optical detection driving circuit configured to drive the photodetector, wherein
the first pixel driving circuit comprises a driving transistor and a first light-emitting control transistor, the driving transistor is configured to output a driving current for driving the light-emitting element under control of a voltage on a gate electrode of the driving transistor and the driving transistor is electrically connected to a pixel electrode of the light-emitting element through the first light-emitting control transistor,
the optical detection driving circuit comprises an output control transistor, and a device electrode of the photodetector is electrically connected to a sense signal line through the output control transistor,
the display panel comprises a plurality of row partitions sequentially arranged in a column direction, and each of the plurality of row partitions is provided with an enable signal line group to be applied with a same enable signal, and
at least one of the plurality of row partitions is provided with the composite driving circuit, a gate electrode of the output control transistor and a gate electrode of the first light-emitting control transistor of the composite driving circuit are electrically connected to the enable signal line group, one of the first light-emitting control transistor and the output control transistor is configured to be turned on in response to a high level signal of the enable signal, and the other one of the first light-emitting control transistor and the output control transistor is configured to be turned on in response to a low level signal of the enable signal, and the composite driving circuit and the photodetector driven by the composite driving circuit are provided in different row partitions respectively.