US 12,431,085 B2
Pixel circuit and driving method therefor, array substrate, and display apparatus
Zhu Wang, Beijing (CN); Yanyang Shang, Beijing (CN); Zhenglong Yan, Beijing (CN); and Ling Shi, Beijing (CN)
Assigned to CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD, Beijing (CN)
Appl. No. 18/558,257
Filed by CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Dec. 9, 2022, PCT No. PCT/CN2022/138079
§ 371(c)(1), (2) Date Oct. 31, 2023,
PCT Pub. No. WO2024/119503, PCT Pub. Date Jun. 13, 2024.
Prior Publication US 2025/0087151 A1, Mar. 13, 2025
Int. Cl. G09G 3/32 (2016.01); G09G 3/3233 (2016.01); H10K 59/121 (2023.01); H10K 59/131 (2023.01)
CPC G09G 3/3233 (2013.01) [H10K 59/1213 (2023.02); H10K 59/1216 (2023.02); H10K 59/131 (2023.02); G09G 2300/0426 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/0286 (2013.01); G09G 2310/08 (2013.01); G09G 2340/0435 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising:
a driving transistor including a control electrode, a first electrode and a second electrode;
a reset sub-circuit, electrically connected to a first scanning signal terminal, a reference voltage signal terminal and the first electrode of the driving transistor, and configured to, under control of a first scanning signal from the first scanning signal terminal, transmit a reference voltage signal from the reference voltage signal terminal to the first electrode of the driving transistor;
a leakage prevention sub-circuit, electrically connected to a second scanning signal terminal, and the first electrode and the control electrode of the driving transistor, and configured to, under control of a second scanning signal from the second scanning signal terminal, connect the first electrode of the driving transistor to the control electrode of the driving transistor; and
a data writing sub-circuit, electrically connected to a third scanning signal terminal, a data signal terminal and the second electrode of the driving transistor, and configured to, under control of a third scanning signal from the third scanning signal terminal, transmit a data signal from the data signal terminal to the second electrode of the driving transistor, wherein
the reset sub-circuit and the data writing sub-circuit are configured to, under the control of respective scanning signals, be turned on sequentially in a case where the leakage prevention sub-circuit is turned on;
the reset sub-circuit is configured to, under the control of the first scanning signal, be turned on at least once in a case where the leakage prevention sub-circuit is turned off; and
in the case where the leakage prevention sub-circuit is turned off, the data writing sub-circuit is configured to, under the control of the third scanning signal, be turned on at least once, and the data signal terminal is configured to output a first reset voltage signal.