US 12,340,722 B2
Pixel circuit and driving method thereof, display substrate, and display apparatus
Hengzhen Liang, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/801,531
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Nov. 10, 2021, PCT No. PCT/CN2021/129786
§ 371(c)(1), (2) Date Aug. 23, 2022,
PCT Pub. No. WO2022/227485, PCT Pub. Date Nov. 3, 2022.
Claims priority of application No. 202110476792.X (CN), filed on Apr. 29, 2021.
Prior Publication US 2024/0221573 A1, Jul. 4, 2024
Int. Cl. G09G 3/3225 (2016.01); G09G 3/20 (2006.01)
CPC G09G 3/2007 (2013.01) [G09G 3/3225 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0452 (2013.01); G09G 2300/0465 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2330/021 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A pixel circuit, configured to drive a first light emitting unit and a second light emitting unit of a sub-pixel to emit light, the pixel circuit comprising: an input circuit, a first light emitting control circuit, and a second light emitting control circuit, wherein:
the input circuit is respectively coupled with a data signal line, a scanning signal line, a first power supply line, and a first node, and is configured to write a data signal provided by the data signal line to the first node and store the data signal written into the first node, under controlling of a scanning signal provided by the scanning signal line;
the first light emitting control circuit is respectively coupled with the first power supply line, a light emitting control signal line, the first node, and a second node, and is configured to provide a driving current to the second node, under controlling of a first power supply signal provided by the first power supply line, the first node, and a light emitting control signal provided by the light emitting control signal line; the second node is coupled with a first electrode of the first light emitting unit;
the second light emitting control circuit is respectively coupled with a control terminal, the second node, and a third node, and is configured to conduct the second node and the third node, under controlling of the control terminal; the third node is coupled with a first electrode of the second light emitting unit; and
a second electrode of the first light emitting unit and a second electrode of the second light emitting unit are both coupled with a second power supply line;
wherein a single luminous region of the sub-pixel is divided into two luminous regions comprising a region in which the first light emitting unit is located and a region in which the second light emitting unit is located;
the first light emitting unit of the sub-pixel is controlled to emit light by the first light emitting control circuit, and the second light emitting unit of the sub-pixel is controlled to emit light by the first light emitting control circuit and the second light emitting control circuit;
wherein the control terminal is coupled with the first node;
wherein the second light emitting control circuit comprises: a second light emitting control transistor; a control electrode of the second light emitting control transistor is coupled with the first node, a first electrode of the second light emitting control transistor is coupled with the second node, and a second electrode of the second light emitting control transistor is coupled with the third node.