US 12,073,771 B2
Display panel and driving method thereof, and display device
Guofeng Hu, Beijing (CN); Qibing Gu, Beijing (CN); Lingyun Shi, Beijing (CN); Ming Chen, Beijing (CN); Xiurong Wang, Beijing (CN); Wei Hao, Beijing (CN); Tao Yang, Beijing (CN); Hong Liu, Beijing (CN); Mingjian Yu, Beijing (CN); Donghui Wang, Beijing (CN); Jing Xue, Beijing (CN); Yong Zhang, Beijing (CN); Jian Wang, Beijing (CN); Jian Lin, Beijing (CN); Xianglei Qin, Beijing (CN); Zhichao Yang, Beijing (CN); Zepeng Sun, Beijing (CN); Honggui Jin, Beijing (CN); Yashuai An, Beijing (CN); Zhilong Duan, Beijing (CN); Lingfang Nie, Beijing (CN); Liangzhen Tang, Beijing (CN); and Limin Zhang, Beijing (CN)
Assigned to BOE MLED Technology Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/290,414
Filed by BOE MLED Technology Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Chaoyang District (CN)
PCT Filed Sep. 18, 2020, PCT No. PCT/CN2020/116187
§ 371(c)(1), (2) Date Apr. 30, 2021,
PCT Pub. No. WO2021/082793, PCT Pub. Date May 6, 2021.
Claims priority of application No. 201911052865.1 (CN), filed on Oct. 31, 2019.
Prior Publication US 2022/0309997 A1, Sep. 29, 2022
Int. Cl. G09G 3/32 (2016.01); G09G 3/34 (2006.01)
CPC G09G 3/32 (2013.01) [G09G 3/3426 (2013.01); G09G 2300/0426 (2013.01); G09G 2310/0286 (2013.01); G09G 2310/08 (2013.01); G09G 2330/021 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a substrate and a plurality of pixel circuits arranged in an array on the substrate,
wherein each of the plurality of pixel circuits comprises a pixel driving chip and at least one light-emitting element electrically connected to the pixel driving chip, and the pixel driving chip is configured to receive and store a data signal and drive the at least one light-emitting element to emit light according to the data signal;
each of the at least one light-emitting element comprises a first electrode and a second electrode;
the pixel driving chip comprises a first terminal, a second terminal, and a third terminal, and is configured to control a current flowing through the at least one light-emitting element according to the data signal;
the first terminal of the pixel driving chip is connected to a first voltage terminal to receive a first voltage, and the second terminal of the pixel driving chip is connected to the first electrode of the at least one light-emitting element;
the pixel circuit comprises a data writing circuit, and the data writing circuit is connected to the pixel driving chip and configured to write the data signal to the pixel driving chip in response to a scan signal;
the data writing circuit comprises a data writing transistor;
a gate electrode of the data writing transistor is electrically connected to a gate driving circuit through a gate line connected to the data writing transistor to receive the scan signal, a first electrode of the data writing transistor is electrically connected to a data driving circuit through a data line connected to the data writing transistor to receive the data signal, and a second electrode of the data writing transistor is electrically connected to the third terminal of the pixel driving chip;
the display panel further comprises:
a wiring electrode, on a side of the data writing transistor away from the substrate; and
a second voltage line, in a same layer as the wiring electrode, and connected to the second electrode of the at least one light-emitting element to provide a second voltage,
wherein the at least one light-emitting element and the pixel driving chip are bound on a side of the wiring electrode away from the substrate, and the first electrode of the at least one light-emitting element is connected to the second terminal of the pixel driving chip through the wiring electrode.