US 12,217,673 B2
Pixel circuit, driving method and display device
Yao Huang, Beijing (CN); Tianyi Cheng, Beijing (CN); Ming Hu, Beijing (CN); Weiyun Huang, Beijing (CN); Benlian Wang, Beijing (CN); Doyoung Kim, Beijing (CN); and Long Ma, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/783,241
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Jun. 23, 2021, PCT No. PCT/CN2021/101756
§ 371(c)(1), (2) Date Jun. 7, 2022,
PCT Pub. No. WO2022/266874, PCT Pub. Date Dec. 29, 2022.
Prior Publication US 2024/0169910 A1, May 23, 2024
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0247 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising a light-emitting element, a driving circuit, a first light-emitting control circuit, a compensation control circuit and a resetting circuit; wherein a refresh display period of the pixel circuit comprises a refresh resetting stage, and at least one display-maintaining period comprising a resetting-maintaining stage is set after the refresh display period; wherein,
the resetting circuit is electrically connected to a first light-emitting control line, an initial voltage terminal and a first electrode of the light-emitting element, and configured to write an initial voltage at the initial voltage terminal into the first electrode of the light-emitting element under the control of a first light-emitting control signal from the first light-emitting control line;
the first light-emitting control circuit is electrically connected to a second light-emitting control line, the first electrode of the light-emitting element and a first terminal of the driving circuit, and configured to control the first electrode of the light-emitting element to be electrically connected to the first terminal of the driving circuit under the control of a second light-emitting control signal from the second light-emitting control line;
the compensation control circuit is electrically connected to a first scanning line, a control terminal of the driving circuit and the first terminal of the driving circuit, and configured to control the control terminal of the driving circuit to be electrically connected to the first terminal of the driving circuit under the control of a first scanning signal from the first scanning line;
the driving circuit is configured to control the generation of a driving current for driving the light-emitting element to emit light under the control of a potential at the control terminal of the driving circuit; and
a second electrode of the light-emitting element is electrically connected to a first voltage terminal;
wherein,
the resetting circuit is configured to write, within the refresh resetting stage, a first resetting voltage into the first electrode of the light-emitting element under the control of a first light-emitting control signal;
the first light-emitting control circuit is configured to control, within the refresh resetting stage, the first electrode of the light-emitting element to be electrically connected to the first terminal of the driving circuit under the control of a second light-emitting control signal;
the compensation control circuit is configured to control, within the refresh resetting stage, the control terminal of the driving circuit to be electrically connected to the first terminal of the driving circuit under the control of the first scanning signal, to write the first resetting voltage into the control terminal of the driving circuit;
the resetting circuit is further configured to write, within the resetting-maintaining stage, a second resetting voltage into the first electrode of the light-emitting element under the control of a first light-emitting control signal;
the first light-emitting control circuit is further configured to control, within the resetting-maintaining stage, the first electrode of the light-emitting element to be electrically connected to the first terminal of the driving circuit under the control of a second light-emitting control signal, to write the second resetting voltage into the first terminal of the driving circuit;
the compensation control circuit is further configured to control, within the resetting-maintaining stage, the control terminal of the driving circuit to be electrically disconnected from the first terminal of the driving circuit under the control of the first scanning signal.