Display panel and burn-in test method of the display panel
View Patent ↗A display panel and a burn-in test method of the display panel are disclosed. The display panel includes a data writing module, a driving module, a sensing module, a control module, and a light-emitting module. Different devices are set in each module. When the display panel is subjected to a burn-in test, a high level signal is provided to the control module, thereby controlling a test current to flow to the light-emitting module. Thereby, an influence of high current on a test performance is improved, and a comprehensive performance of the display panel is improved.
1. A display panel, comprising:
a burn-in test circuit, wherein the burn-in test circuit comprises a plurality of pixel driving circuits, and one of the pixel driving circuits comprises:
a data writing module, wherein the data writing module is electrically connected to a data signal line of the display panel and writes a data signal through the data signal line;
a driving module, wherein the driving module is electrically connected to the data writing module, and the driving module is configured to receive the data signal of the data writing module and form a driving voltage according to the data signal;
a sensing module, wherein the sensing module is electrically connected to the driving module, and the sensing module is configured to sense the driving voltage and form a feedback current according to the driving voltage;
a control module, wherein the control module is electrically connected to the driving module and the sensing module; and
a light-emitting module, wherein the light-emitting module is electrically connected to the driving module, the sensing module, and the control module;
wherein the control module is configured to receive a high level signal, so that the control module is fully turned on, and the control module is configured to perform a burn-in test on the light-emitting module according to the driving voltage and the feedback current, the driving module is provided with at least one thin film transistor and a capacitor, and the thin film transistor is electrically connected to the capacitor correspondingly.
2. The display panel of claim 1 , wherein
the driving module comprises a first thin film transistor, a drain of the first thin film transistor is electrically connected to a voltage terminal, a gate of the first thin film transistor is electrically connected to the data writing module, and a source of the first thin film transistor is electrically connected to the light-emitting module, the sensing module, and the control module.
3. The display panel of claim 2 , wherein
the driving module further comprises a capacitor, an end of the capacitor is electrically connected to the gate, and another end of the capacitor is electrically connected to the source.
4. The display panel of claim 1 , wherein
the data writing module comprises a second thin film transistor, a drain of the second thin film transistor is electrically connected to the data signal line, and a source of the second thin film transistor is electrically connected to the driving module.
5. The display panel of claim 4 , wherein
the pixel driving circuit further comprises a first control signal line, and the first control signal line is electrically connected to a gate of the second thin film transistor.
6. The display panel of claim 1 , wherein
the sensing module comprises a third thin film transistor, and a source of the third thin film transistor is electrically connected to the driving module, the light-emitting module, and the control module.
7. The display panel of claim 6 , wherein
the pixel driving circuit further comprises a second control signal line, and the second control signal line is electrically connected to a gate of the third thin film transistor.
8. A display panel, comprising
a burn-in test circuit, wherein the burn-in test circuit comprises a plurality of pixel driving circuits, and one of the pixel driving circuits comprises:
a data writing module, wherein the data writing module is electrically connected to a data signal line of the display panel and writes a data signal through the data signal line;
a driving module, wherein the driving module is electrically connected to the data writing module, and the driving module is configured to receive the data signal of the data writing module and form a driving voltage according to the data signal;
a sensing module, wherein the sensing module is electrically connected to the driving module, and the sensing module is configured to sense the driving voltage and form a feedback current according to the driving voltage;
a control module, wherein the control module is electrically connected to the driving module and the sensing module; and
a light-emitting module, wherein the light-emitting module is electrically connected to the driving module, the sensing module, and the control module;
wherein the control module is configured to receive a high level signal, so that the control module is fully turned on, and the control module is configured to perform a burn-in test on the light-emitting module according to the driving voltage and the feedback current.
9. The display panel of claim 8 , wherein
the driving module comprises a first thin film transistor, a drain of the first thin film transistor is electrically connected to a voltage terminal, a gate of the first thin film transistor is electrically connected to the data writing module, and a source of the first thin film transistor is electrically connected to the light-emitting module, the sensing module, and the control module.
10. The display panel of claim 9 , wherein
the driving module further comprises a capacitor, an end of the capacitor is electrically connected to the gate, and another end of the capacitor is electrically connected to the source.
11. The display panel of claim 8 , wherein
the data writing module comprises a second thin film transistor, a drain of the second thin film transistor is electrically connected to the data signal line, and a source of the second thin film transistor is electrically connected to the driving module.
12. The display panel of claim 11 , wherein
the pixel driving circuit further comprises a first control signal line, and the first control signal line is electrically connected to a gate of the second thin film transistor.
13. The display panel of claim 8 , wherein
the sensing module comprises a third thin film transistor, and a source of the third thin film transistor is electrically connected to the driving module, the light-emitting module, and the control module.
14. The display panel of claim 13 , wherein
the pixel driving circuit further comprises a second control signal line, and the second control signal line is electrically connected to a gate of the third thin film transistor.
15. The display panel of claim 8 , wherein
the control module comprises a fourth thin film transistor, a drain of the fourth thin film transistor is electrically connected to the data signal line, and a source of the fourth thin film transistor is electrically connected to the light-emitting module, the driving module, and the sensing module.
16. The display panel of claim 15 , wherein
the pixel driving circuit further comprises a third control signal line, and a gate of the fourth thin film transistor is electrically connected to the third control signal line.
17. The display panel of claim 16 , wherein
the third control signal line is configured to provide the high level signal to the gate of the fourth thin film transistor.
18. The display panel of claim 8 , wherein
the pixel driving circuit comprises a first pixel driving circuit, a second pixel driving circuit, and a third pixel driving circuit, the first pixel driving circuit, the second pixel driving circuit, and the third pixel driving circuit are correspondingly arranged in light-emitting pixel areas of different colors, and the sensing module in the first pixel driving circuit is electrically connected to the sensing module in the second pixel driving circuit and the sensing module in the third pixel driving circuit.
19. The display panel of claim 18 , wherein
drains of corresponding third thin film transistors in each pixel driving circuit are electrically connected to each other.
20. A burn-in test method of a display panel, comprising following steps:
providing a burn-in test circuit, wherein the burn-in test circuit comprises a plurality of pixel driving circuits, and one of the pixel driving circuits comprises: a data writing module, wherein the data writing module is electrically connected to a data signal line of the display panel and writes a data signal through the data signal line; a driving module, wherein the driving module is electrically connected to the data writing module, and the driving module is configured to receive the data signal of the data writing module and form a driving voltage according to the data signal; a sensing module, wherein the sensing module is electrically connected to the driving module, and the sensing module is configured to sense the driving voltage and form a feedback current according to the driving voltage; a control module, wherein the control module is electrically connected to the driving module and the sensing module; and a light-emitting module, wherein the light-emitting module is electrically connected to the driving module, the sensing module, and the control module; wherein the control module is configured to receive a high level signal, so that the control module is fully turned on, and the control module is configured to perform a burn-in test on the light-emitting module according to the driving voltage and the feedback current;
performing a burn-in test on corresponding light-emitting modules in different ones of the pixel driving circuits, wherein the high level signal is provided to a third control signal line in the one of the pixel driving circuit, the corresponding light-emitting modules in the different ones of the pixel driving circuits are aged, and when the high level signal is provided to the third control signal line, a low level signal is provided to the data signal line in one of the pixel driving circuit corresponding to a circuit without the burn-in test.