US 12,288,505 B2
Driving circuit, display panel, and driving method thereof
Wenxue Huo, Guangdong (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 17/756,465
Filed by TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed May 17, 2022, PCT No. PCT/CN2022/093308
§ 371(c)(1), (2) Date May 25, 2022,
PCT Pub. No. WO2023/206637, PCT Pub. Date Nov. 2, 2023.
Claims priority of application No. 202210458165.8 (CN), filed on Apr. 27, 2022.
Prior Publication US 2024/0169892 A1, May 23, 2024
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0633 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A driving circuit comprising:
a light-emitting module, wherein the light-emitting module emits light under a driving of a driving current;
a data signal writing module configured to receive a first data signal and a first scan signal, wherein the data signal writing module is connected to the light-emitting module and is configured to control a magnitude of the driving current; and
a control module configured to receive a second data signal, a light-emitting time control signal, a second scan signal, and a third scan signal and electrically connected to the data signal writing module and the light-emitting module, wherein the control module is configured to control a light-emitting time of the light-emitting module under a control of the light-emitting time control signal;
wherein the light-emitting module comprises a first transistor and a light-emitting device, a first electrode of the first transistor is electrically connected to a first power supply terminal, a gate of the first transistor is electrically connected to a first node, and a second electrode of the first transistor is electrically connected to a second node;
wherein an anode of the light-emitting device is electrically connected to the second node, and a cathode of the light-emitting device is electrically connected to a second power supply terminal;
wherein the data signal writing module comprises a second transistor and a first capacitor, a gate of the second transistor is configured to receive the first scan signal, the first electrode of the second transistor is configured to receive the first data signal, a second electrode of the second transistor is connected to the first node; one end of the first capacitor is electrically connected to the first node, and another end of the first capacitor is electrically connected to the second node;
wherein the control module comprises a second capacitor, a third transistor, a fourth transistor, and a fifth transistor, one end of the second capacitor is configured to receive the light-emitting time control signal, and another end of the second capacitor is electrically connected to the third node;
wherein a gate of the third transistor is configured to receive the second scan signal, a first electrode of the third transistor is electrically connected to the third node, and a second electrode of the third transistor is electrically connected between the data signal writing module and the light-emitting module;
wherein a gate of the fourth transistor is electrically connected to the third node, a first electrode of the fourth transistor is electrically connected to the fourth node, and a second electrode of the fourth transistor is electrically connected to a second electrode of the third transistor is electrically connected;
wherein a gate of the fifth transistor is configured to receive the third scan signal, a first electrode of the fifth transistor is configured to receive the second data signal, and a second electrode of the fifth transistor is electrically connected to the fourth node;
wherein the first electrode of the second transistor and the first electrode of the fifth transistor are electrically connected to a fifth node, and the first data signal and the second data signal are a same signal.