Display panel and electronic device
View Patent ↗A display panel and an electronic device are provided by the present application. In the image display period of at least one frames under the first preset refresh mode, during the display period, the data line is configured to output display voltage to the pixel unit, during the vertical blanking stage, the data line is configured to output compensation voltage to the pixel unit. When the display voltage is a positive polarity voltage, a voltage value of the display voltage is less than a voltage value of the compensation voltage, when the display voltage is a negative polarity voltage, the voltage value of the display voltage is greater than the voltage value of the compensation voltage.
1. A display panel, having a first preset refresh mode and a second preset refresh mode, and comprising:
a data line; and
a pixel unit connected to the data line,
wherein the data line is configured to output a data voltage to the pixel unit during an image display period of each frame, the image display period comprises a display period and a vertical blanking stage;
a refresh frequency of the second preset refresh mode is higher than a refresh frequency of the first preset refresh mode;
under the first preset refresh mode, the vertical blanking stage comprises a first period and a second period, and a duration of the second period is equal to a duration of the vertical blanking stage under the second preset refresh mode;
under the first preset refresh mode, during the image display period of at least one frames, the data voltage comprises a display voltage and a compensation voltage; during the display period, the data line outputs the display voltage to the pixel unit, during the first period of the vertical blanking stage, the data line outputs the compensation voltage to the pixel unit, and during the second period of the vertical blanking stage, the data line does not output the compensation voltage to the pixel unit;
under the second preset refresh mode, during the vertical blanking stage, the data line does not output the compensation voltage to the pixel unit; and
when the display voltage is a positive polarity voltage, a voltage value of the display voltage is less than a voltage value of the compensation voltage, and when the display voltage is a negative polarity voltage, the voltage value of the display voltage is greater than the voltage value of the compensation voltage.
2. The display panel according to claim 1 , wherein when the display voltage is a positive polarity voltage, the compensation voltage is a positive polarity voltage corresponding to a maximum display gray scale of the display panel; and
when the display voltage is a negative polarity voltage, the compensation voltage is a negative polarity voltage corresponding to the maximum display gray scale of the display panel.
3. The display panel according to claim 1 , wherein the voltage value of the compensation voltage is adjusted in real time according to the voltage value of the display voltage.
4. The display panel according to claim 1 , wherein a common voltage of the display panel is zero, an absolute value of the display voltage is less than an absolute value of the compensation voltage.
5. The display panel according to claim 1 , wherein the display panel comprises a scanning line, the scanning line is configured to cross with the data line;
during the vertical blanking stage, the scanning line is configured to output a reference low level voltage, and a voltage value of the reference low level voltage is greater than or less than a voltage value of a preset reference low level voltage.
6. The display panel according to claim 5 , wherein
under the first preset refresh mode, during the vertical blanking stage, the scanning line is configured to output a first reference low level voltage, and under the second preset refresh mode, during the vertical blanking stage, the scanning line is configured to output a second reference low level voltage; both a voltage value of the first reference low level voltage and a voltage value of the second reference low level voltage are greater or less than the voltage value of the preset reference low level voltage.
7. The display panel according to claim 6 , wherein the voltage value of the first reference low level voltage is equal to the voltage value of the second reference low level voltage.
8. The display panel according to claim 6 , when both the voltage value of the first reference low level voltage and the voltage value of the second reference low level voltage are less than the voltage value of the preset reference low level voltage, the voltage value of the first reference low level voltage is less than the voltage value of the second reference low level voltage;
when both the voltage value of the first reference low level voltage and the voltage value of the second reference low level voltage are greater than the voltage value of the preset reference low level voltage, the voltage value of the first reference low level voltage is greater than the voltage value of the second reference low level voltage.
9. An electronic device, comprising the display panel and a driving device, the driving device is configured to provide a data voltage to the display panel, wherein the display panel has a first preset refresh mode and a second preset refresh mode, and comprises:
a data line; and
a pixel unit connected to the data line,
wherein the data line is configured to output a data voltage to the pixel unit during an image display period of each frame, the image display period comprises a display period and a vertical blanking stage;
a refresh frequency of the second preset refresh mode is higher than a refresh frequency of the first preset refresh mode;
under the first preset refresh mode, the vertical blanking stage comprises a first period and a second period, and a duration of the second period is equal to a duration of the vertical blanking stage under the second preset refresh mode;
under the first preset refresh mode, during the image display period of at least one frames, the data voltage comprises a display voltage and a compensation voltage; during the display period, the data line outputs the display voltage to the pixel unit, during the first period of the vertical blanking stage, the data line outputs the compensation voltage to the pixel unit, and during the second period of the vertical blanking stage, the data line does not output the compensation voltage to the pixel unit;
under the second preset refresh mode, during the vertical blanking stage, the data line does not output the compensation voltage to the pixel unit; and
when the display voltage is a positive polarity voltage, a voltage value of the display voltage is less than a voltage value of the compensation voltage, and when the display voltage is a negative polarity voltage, the voltage value of the display voltage is greater than the voltage value of the compensation voltage.
10. The electronic device according to claim 9 , wherein when the display voltage is a positive polarity voltage, the compensation voltage is a positive polarity voltage corresponding to a maximum display gray scale of the display panel; and
when the display voltage is a negative polarity voltage, the compensation voltage is a negative polarity voltage corresponding to the maximum display gray scale of the display panel.
11. The electronic device according to claim 9 , wherein the voltage value of the compensation voltage is adjusted in real time according to the voltage value of the display voltage.
12. The electronic device according to claim 9 , wherein a common voltage of the display panel is zero, an absolute value of the display voltage is less than an absolute value of the compensation voltage.
13. The electronic device according to claim 9 , wherein the display panel comprises a scanning line, the scanning line is configured to cross with the data line;
during the vertical blanking stage, the scanning line is configured to output a reference low level voltage, and a voltage value of the reference low level voltage is greater than or less than a voltage value of a preset reference low level voltage.
14. The electronic device according to claim 13 , wherein
under the first preset refresh mode, during the vertical blanking stage, the scanning line is configured to output a first reference low level voltage, and under the second preset refresh mode, during the vertical blanking stage, the scanning line is configured to output a second reference low level voltage; both a voltage value of the first reference low level voltage and a voltage value of the second reference low level voltage are greater or less than the voltage value of the preset reference low level voltage.
15. The electronic device according to claim 14 , wherein the voltage value of the first reference low level voltage is equal to the voltage value of the second reference low level voltage.
16. The electronic device according to claim 14 , when both the voltage value of the first reference low level voltage and the voltage value of the second reference low level voltage are less than the voltage value of the preset reference low level voltage, the voltage value of the first reference low level voltage is less than the voltage value of the second reference low level voltage;
when both the voltage value of the first reference low level voltage and the voltage value of the second reference low level voltage are greater than the voltage value of the preset reference low level voltage, the voltage value of the first reference low level voltage is greater than the voltage value of the second reference low level voltage.
17. A display panel, having a first preset refresh mode, and comprising:
a data line;
a scanning line crossing with the data line; and
a pixel unit connected to the data line and the scanning line,
wherein the data line is configured to output a data voltage to the pixel unit during an image display period of each frame, the image display period comprises a display period and a vertical blanking stage;
during the vertical blanking stage, the scanning line is configured to output a reference low level voltage, and a voltage value of the reference low level voltage is greater than or less than a voltage value of a preset reference low level voltage;
under the first preset refresh mode, during the image display period of at least one frames, the data voltage comprises a display voltage and a compensation voltage, during the display period, the data line outputs the display voltage to the pixel unit, and during the vertical blanking stage, the data line outputs the compensation voltage to the pixel unit;
when the display voltage is a positive polarity voltage, a voltage value of the display voltage is less than a voltage value of the compensation voltage, and when the display voltage is a negative polarity voltage, the voltage value of the display voltage is greater than the voltage value of the compensation voltage;
the first preset refresh mode comprises a first refresh mode and a second refresh mode, a refresh frequency of the first refresh mode is lower than a refresh frequency of the second refresh mode;
under the first refresh mode, during the vertical blanking stage, the scanning line is configured to output a first reference low level voltage, under the second refresh mode, during the vertical blanking stage, the scanning line is configured to output a second reference low level voltage; both a voltage value of the first reference low level voltage and a voltage value of the second reference low level voltage are greater or less than the voltage value of the preset reference low level voltage.
18. The display panel according to claim 17 , wherein the voltage value of the first reference low level voltage is equal to the voltage value of the second reference low level voltage.
19. The display panel according to claim 17 , when both the voltage value of the first reference low level voltage and the voltage value of the second reference low level voltage are less than the voltage value of the preset reference low level voltage, the voltage value of the first reference low level voltage is less than the voltage value of the second reference low level voltage;
when both the voltage value of the first reference low level voltage and the voltage value of the second reference low level voltage are greater than the voltage value of the preset reference low level voltage, the voltage value of the first reference low level voltage is greater than the voltage value of the second reference low level voltage.
20. The display panel according to claim 17 ,
wherein under the first refresh mode, the data voltage comprises a first display voltage and a first compensation voltage, during the display period, the data line outputs the first display voltage to the pixel unit, during the vertical blanking stage, the data line outputs the first compensation voltage to the pixel unit; when the display voltage is a positive polarity voltage, a voltage value of the first display voltage is less than a voltage value of the first compensation voltage, when the first display voltage is a negative polarity voltage, the voltage value of the first display voltage is greater than the voltage value of the first compensation voltage;
wherein under the second refresh mode, the data voltage comprises a second display voltage and a second compensation voltage, during the display period, the data line outputs the second display voltage to the pixel unit, during the vertical blanking stage, the data line outputs the second compensation voltage to the pixel unit; when the display voltage is a positive polarity voltage, a voltage value of the second display voltage is less than a voltage value of the second compensation voltage, when the second display voltage is a negative polarity voltage, the voltage value of the second display voltage is greater than the voltage value of the second compensation voltage; and
wherein a voltage difference between the first compensation voltage and the first display voltage is greater a voltage difference between the second compensation voltage and the second display voltage.