Display panel and sensing method and driving method therefor

1. A sensing method for an organic light-emitting diode display panel, wherein the organic light-emitting diode display panel comprises a plurality of pixel units arranged in an array, each pixel unit comprises a plurality of sub-pixels, at least two sub-pixels are connected to a same sensing signal line, and

the method comprises:

sequentially applying sensing data signals to the sub-pixels in the organic light-emitting diode display panel, and sequentially outputting sensing signals through sensing signal lines, to sense the sub-pixels, so as to compensate the sub-pixels,

wherein among the sub-pixels connected to the same sensing signal line, sub-pixels, other than a sub-pixel which is currently sensed, are applied with a zero-gray-scale data signal.

2. The method according to claim 1 , wherein sequentially applying the sensing data signals to the sub-pixels in the organic light-emitting diode display panel, and sequentially outputting the sensing signals through the sensing signal lines, comprises:

sequentially applying the sensing data signals to an N-th row of sub-pixels, and sequentially outputting the sensing signals through the sensing signal lines to sense each sub- pixel among the N-th row of sub-pixels; and

in response to completing sensing of the N-th row of sub-pixels, sequentially applying the sensing data signals to an (N+1)-th row of sub-pixels, and sequentially outputting the sensing signals through the sensing signal lines,

where N is a positive integer.

3. The method according to claim 2 , wherein a driving phase of each frame of the organic light-emitting diode display panel comprises a display phase and a blanking phase, and a sensing phase of the sub-pixels is within the blanking phase.

4. The method according to claim 3 , wherein the sub-pixels connected to the same sensing signal line belong to one sensing group, and

for the sub-pixels of a same sensing group, sensing phases of different sub-pixels are within blanking phases of different frames, or sensing phases of at least two sub-pixels are within the blanking phase of a same frame.

5. The method according to claim 2 , wherein the sub-pixels connected to the same sensing signal line belong to one sensing group, and

for the sub-pixels of a same sensing group, the sub-pixels are sequentially sensed along a row direction.

6. The method according to claim 2 , wherein the sub-pixels connected to the same sensing signal line belong to one sensing group, and

for the sub-pixels of a same sensing group, the sub-pixels are sensed according to a preset order, and the preset order is different from an order in which the sub-pixels are arranged along a row direction.

7. The method according to claim 2 , wherein the sub-pixels connected to the same sensing signal line belong to a same pixel unit or belong to different pixel units, and the sub-pixels of each pixel unit are in a same row.

8. The method according to claim 2 , wherein for the sub-pixels connected to the same sensing signal line, durations of sensing phases of respective sub-pixels are not exactly identical.

9. The method according to claim 2 , wherein each pixel unit comprises four sub-pixels, and the four sub-pixels comprise a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel.

10. The method according to claim 2 , wherein each sub-pixel comprises a pixel circuit, and the pixel circuit comprises a driving circuit, a data writing circuit, a storage circuit, and a sensing circuit;

the driving circuit is connected to a light-emitting element and is configured to control a driving current for driving the light-emitting element to emit light;

the data writing circuit is connected to the driving circuit and is configured to write a sensing data signal, the zero-gray-scale data signal, or a display data signal into the driving circuit in response to a first scanning signal;

the storage circuit is connected to the driving circuit and the data writing circuit, and is configured to store the sensing data signal, the zero-gray-scale data signal, or the display data signal written by the data writing circuit; and

the sensing circuit is connected to the driving circuit, the light-emitting element, and the sensing signal line, and is configured to transmit a signal flowing through the driving circuit to the sensing signal line in response to a second scanning signal, so as to output a sensing signal through the sensing signal line.

11. The method according to claim 1 , wherein the sub-pixels connected to the same sensing signal line belong to one sensing group, and the sub-pixels of a same sensing group are numbered from a first sub-pixel to an M-th sub-pixel,

sequentially applying the sensing data signals to the sub-pixels in the organic light-emitting diode display panel, and sequentially outputting the sensing signals through the sensing signal lines, comprises:

applying the sensing data signals to P-th sub-pixels in the organic light-emitting diode display panel, and outputting the sensing signals through the sensing signal lines, to sense each P-th sub-pixel in the organic light-emitting diode display panel; and

in response to completing sensing the P-th sub-pixels in the organic light-emitting diode display panel, applying the sensing data signals to (P+ 1 )-th sub-pixels in the organic light-emitting diode display panel, and outputting the sensing signals through the sensing signal lines,

where M>1 and M is an integer, 1≤P≤M−1 and P is an integer.

12. The method according to claim 11 , wherein applying the sensing data signals to the P-th sub-pixels in the organic light-emitting diode display panel, and outputting the sensing signals through the sensing signal lines, comprises:

applying the sensing data signals to the P-th sub-pixels row by row, and outputting the sensing signals through the sensing signal lines.

13. The method according to claim 11 , wherein a driving phase of each frame of the organic light-emitting diode display panel comprises a display phase and a blanking phase, and a sensing phase of the sub-pixels is within the blanking phase.

14. The method according to claim 13 , wherein for P-th sub-pixels in a same column, sensing phases of different P-th sub-pixels are within blanking phases of different frames, or sensing phases of at least two P-th sub-pixels are within the blanking phase of a same frame.

15. The method according to claim 11 , wherein P-th sub-pixels in a same row are simultaneously sensed, and

for P-th sub-pixels in a same column, the P-th sub-pixels are sequentially sensed along a column direction.

16. The method according to claim 11 , wherein for the sub-pixels of the same sensing group,

the first sub-pixel to the M-th sub-pixel are sequentially arranged along a row direction, or,

the first sub-pixel to the M-th sub-pixel are arranged out of order along the row direction.

17. The method according to claim 1 , wherein a sensing phase of the sub-pixels is within a shutdown compensation phase of the organic light-emitting diode display panel.

18. A driving method for an organic light-emitting diode display panel, comprising:

in a display phase, writing display data signals to the sub-pixels of the organic light-emitting diode display panel to enable the organic light-emitting diode display panel to display; and

in a non-display phase, using the sensing method for the organic light-emitting diode display panel according to claim 1 to sense the sub-pixels of the organic light-emitting diode display panel, so as to compensate the sub-pixels.

19. An organic light-emitting diode display panel, comprising a timing controller, a gate driver, a data driver, and a plurality of pixel units arranged in an array, wherein each pixel unit comprises a plurality of sub-pixels, and at least two sub-pixels are connected to a same sensing signal line;

the timing controller is connected to the gate driver and the data driver, and the timing controller is configured to provide a first control signal to the gate driver to control the gate driver to output a first scanning signal and a second scanning signal, and provide a second control signal to the data driver to control the data driver to output a sensing data signal and a zero-gray-scale data signal;

the gate driver is configured to apply the first scanning signal and the second scanning signal to the sub-pixels in the organic light-emitting diode display panel under control of the first control signal;

the data driver is configured to apply the sensing data signal and the zero-gray-scale data signal to the sub-pixels in the organic light-emitting diode display panel under control of the second control signal; and

the sub-pixels output sensing signals through sensing signal lines in response to the first scanning signal, the second scanning signal, and the sensing data signal, to realize sensing of the sub-pixels, so as to compensate the sub-pixels,

wherein among the sub-pixels connected to the same sensing signal line, sub-pixels, other than a sub-pixel which is currently sensed, are applied with the zero-gray-scale data signal.

20. The organic light-emitting diode display panel according to claim 19 ,

wherein the gate driver is further configured to apply the first scanning signal and the second scanning signal to an N-th row of sub-pixels for multiple times under control of the first control signal;

the data driver is further configured to apply the sensing data signal to each sub-pixel in the N-th row of sub-pixels respectively under control of the second control signal, and the N-th row of sub-pixels are not applied with the sensing data signal at same time; and

after each sub-pixel in the N-th row of sub-pixels outputs the sensing signals through the sensing signal lines to complete sensing of the N-th row of sub-pixels, an (N+1)-th row of sub-pixels receive signals provided by the gate driver and the data driver and start sensing,

where N is a positive integer.