Display circuit and display panel
Patent Information
- Authority / Receiving Office
- TW · TW
- Patent Type
- Patents
- Current Assignee / Owner
- AU OPTRONICS CORP
- Filing Date
- 2025-06-26
- Publication Date
- 2026-08-01
Smart Images
Figure TWG2TB001904030_001 
Figure TWG2TB001904030_002 
Figure TWG2TB001904030_003
Abstract
Claims
1. A display circuit, comprising: A light-emitting element, wherein a first end of the light-emitting element is coupled to a first node, and a second end of the light-emitting element receives a system high voltage; A temperature sensing circuit, coupled to the first node, includes: a first transistor, wherein a first terminal of the first transistor is coupled to the first node, a second terminal of the first transistor is coupled to a data signal line, and a control terminal of the first transistor receives a sensing signal; and a second transistor, wherein a first terminal of the second transistor is coupled to the first terminal of the first transistor, a control terminal of the second transistor receives a reset signal or a light emission control signal, and a second terminal of the second transistor receives an initial voltage; and a pixel circuit, coupled to the first node, wherein the temperature sensing circuit is used to sense the temperature of the light-emitting element during a temperature sensing period between a first display phase and a second display phase of the pixel circuit.
2. The display circuit as claimed in claim 1, wherein during the temperature sensing period, the second transistor and the pixel circuit are turned off, and the first transistor is turned on according to the sensing signal to conduct a circuit path from the system high voltage through the light-emitting element and the first transistor to the data signal line.
3. The display circuit as claimed in claim 1, wherein during the first display phase and the second display phase of the pixel circuit, the sensing signal is maintained at a high voltage level to turn off the first transistor.
4. The display circuit as claimed in claim 1, wherein during a reset phase of the pixel circuit, the first transistor is turned off, and the second transistor is turned on according to the reset signal or the light emission control signal to conduct a circuit path from the initial voltage through the second transistor to the first node.
5. The display circuit as claimed in claim 1, wherein the enable period of the sensing signal is between 2 and 3 data times, wherein the data time is defined as the time during which the display circuit drives a corresponding pixel column in each frame time.
6. A display panel, comprising: A plurality of pixel areas, each of which includes a display circuit, the display circuit including: a light-emitting element, wherein a first terminal of the light-emitting element is coupled to a first node, and a second terminal of the light-emitting element receives a system high voltage; a temperature sensing circuit coupled to the first node, including: a first transistor, wherein a first terminal of the first transistor is coupled to the first node, and a second terminal of the first transistor is coupled to a first data signal line or a second data signal line, and a control terminal of the first transistor receives a sensing signal; and a second transistor, wherein a first terminal of the second transistor is coupled to the first terminal of the first transistor, and a control terminal of the second transistor receives a reset signal or a light emission control signal, and a second terminal of the second transistor receives an initial voltage; and a pixel circuit coupled to the first node, wherein the temperature sensing circuit is used to sense the temperature of the light-emitting element during a temperature sensing period between a first display phase and a second display phase of the pixel circuit; A plurality of first switching transistors are coupled between the pixel regions and a driver chip; and a second switching transistor is coupled between the pixel regions and the driver chip, wherein the second switching transistor is adjacent to the first switching transistors.
7. The display panel as described in claim 6, wherein a control terminal of the first switching transistors receives a switching signal, a first terminal of the first switching transistors is coupled to the first data signal line, and a second terminal of the first switching transistors is coupled to the driver chip.
8. The display panel as described in claim 7, wherein a control terminal of the second switching transistor receives a current sensing signal, a first terminal of the second switching transistor is coupled to the second data signal line, and a second terminal of the second switching transistor is coupled to the driver chip.
9. The display panel as claimed in claim 8, wherein during the temperature sensing period, the first switching transistors are turned off according to the switching signal, the second switching transistors are turned on according to the current sensing signal, the second transistor and the pixel circuit are turned off, and the first transistors are turned on according to the sensing signal to conduct a circuit path from the system high voltage through the light-emitting element, the first transistor, the second data signal line and the second switching transistor to the driver chip.
10. The display panel as claimed in claim 6, wherein the enable period of the sensing signal is between 2 and 3 data times, wherein the data time is defined as the time during which the display circuit drives a corresponding pixel column in each frame time.