Display device and a method for driving the same
View Patent ↗A method for driving a display device is disclosed. Display images of one frame are divided into detection regions; pixel polarity arrangements of each detection region are determined, and according to the determined result a data driving circuit selects a corresponding scanning method to drive the display device. The data driving circuit adopts an interlaced-to-progress scanning conversion method to drive the display device, so as to ensure that there are no data circuits in a loaded state, thereby reducing the power consumption of the display device.
1. A method for driving a display device comprising steps of: dividing display images of one frame into detection regions; determining pixel polarity arrangements of each detection regions; selecting a corresponding scanning method according to the determined result to drive the display device via a data driving circuit; wherein the step of determining pixel polarity arrangements of each detection regions comprises: determining whether each of the detection regions includes a first pixel polarity arrangement or a second pixel polarity arrangement; wherein the step of selecting a corresponding scanning method according to the determined result to drive the display device via a data driving circuit comprises: when it is determined that each of the detection regions does not include the first pixel polarity arrangement, then the data driving circuit drives the display device in a progressive scanning method; when it is determined that at least one detection region includes the first pixel polarity arrangement but the other detection regions do not include the second pixel polarity arrangement, then the data driving circuit drives the display device in an interlace scanning method; when it is determined that at least one detection region includes the first pixel polarity arrangement and at least one detection regions includes the second pixel polarity arrangement, then the data driving circuit drives the display in an interlaced-to-progressive scanning conversion method.
2. The method for driving a display device claimed in claim 1 , wherein steps for determining whether the detection region includes the first pixel polarity arrangement are: presetting a first threshold voltage; if an absolute value of the voltage obtained by a voltage of row N+1 minus a voltage of row N is greater than the first threshold value, and an absolute value of the voltage obtained by the voltage of row N+1 minus a voltage of row N+2 is greater than the first threshold value, then the detection region includes the first pixel polarity arrangement.
3. The method for driving a display device claimed in claim 1 , wherein steps for determining whether the detection region includes the second pixel polarity arrangement are: presetting a second threshold voltage; if an absolute value of the voltage obtained by a voltage of row N+1 minus a voltage of row N is greater than the second threshold value, and an absolute value of the voltage obtained by the voltage of row N+1 minus a voltage of row N+2 is less than the second threshold value, then the detection region includes the second pixel polarity arrangement.
4. The method for driving a display device claimed in claim 1 , wherein the step of when it is determined that each of the detection regions does not include the first pixel polarity arrangement, then the data driving circuit drives the display device in a progressive scanning method comprises: when it is determined that each of the detection regions does not includes the first pixel polarity arrangement but at least one detection region includes the second pixel polarity arrangement, then the data driving circuit drives the display device in the progressive scanning method.
5. The method for driving a display device claimed in claim 1 , wherein the first pixel polarity arrangement and the second pixel polarity arrangement are different.
6. The method for driving a display device claimed in claim 5 , wherein the first pixel polarity arrangement has opposite polarity between adjacent rows;
the second pixel polarity arrangement has two lines as a unit of the same polarity, adjacent units have opposite polarity.
7. A driving apparatus of a display device comprising: a dividing module, for dividing display images of one frame into detection regions; a determining module, for determining pixel polarity arrangements of each detection regions; a driving module, for driving the display device by selecting a corresponding scanning method according to the determined result; wherein the determining module is specifically for determining whether each of the detection regions includes a first pixel polarity arrangement or a second pixel polarity arrangement; wherein the driving module is specifically for driving the display device in a progressive scanning method when it is determined that each of the detection regions does not include the first pixel polarity arrangement; when it is determined that at least one detection region includes the first pixel polarity arrangement, but the other detection regions do not include the second pixel polarity arrangement, then the data driving circuit drives the display in an interlaced scanning method; when it is determined that at least one region includes the first pixel polarity arrangement, and at least one detection region includes the second pixel polarity arrangement, then the data driving circuit drives the display in an interlaced-to-progressive scanning conversion method.
8. The driving apparatus of a display device claimed in claim 7 , wherein the determining module comprises a first determining module, and a second determining module; the first determining module is for determining whether each of the detection regions includes the first pixel polarity arrangement, comprising steps of: presetting a first threshold voltage; if an absolute value of the voltage obtained by a voltage of row N+1 minus a voltage of row N is greater than the first threshold value, and an absolute value of the voltage obtained by the voltage of row N+1 minus a voltage of row N+2 is greater than the first threshold value, then the detection region includes the first pixel polarity arrangement; the second determining module is for determining whether each of the detection regions includes the second pixel polarity arrangement, comprising steps of: presetting a second threshold voltage; if an absolute value of voltage obtained by a voltage of row N+1 minus a voltage of row N is greater than the second threshold value, and an absolute value of voltage obtained by the voltage of row N+1 minus a voltage of row N+2 is less than the second threshold value, then the detection region includes the second pixel polarity arrangement.
9. The driving apparatus of a display device claimed in claim 7 , wherein the driving module is further for driving the display device in the progressive scanning method when it is determined that each of the detection regions does not include the first pixel polarity arrangement, but at least one detection region includes the second pixel polarity arrangement.
10. A method for driving a display device comprising steps of:
dividing display images of one frame into detection regions;
determining whether each of the detection regions includes a first pixel polarity arrangement or a second pixel polarity arrangement; wherein, the first pixel polarity arrangement and the second pixel polarity arrangement are different;
when it is determined that each of the detection regions does not include the first pixel polarity arrangement, then a data driving circuit drives the display device in a progressive scanning method;
when it is determined that at least one detection region includes the first pixel polarity arrangement but the other detection regions do not include the second pixel polarity arrangement, then the data driving circuit drives the display device in an interlaced scanning method;
when it is determined that at least one detection region includes the first pixel polarity arrangement and at least one detection regions includes the second pixel polarity arrangement, then the data driving circuit drives the display in an interlaced-to-progressive scanning conversion method.
11. The method for driving a display device claimed in claim 10 , wherein steps for determining whether the detection region includes the first pixel polarity arrangement are:
presetting a first threshold voltage;
if an absolute value of a voltage obtained by a voltage of row N+1 minus a voltage of row N is greater than the first threshold value, and an absolute value of a voltage obtained by the voltage of row N+1 minus a voltage of row N+2 is greater than the first threshold value, then the detection region includes the first pixel polarity arrangement.
12. The method for driving a display device claimed in claim 10 , wherein steps for determining whether the detection region includes the second pixel polarity arrangement are:
presetting a second threshold voltage;
if an absolute value of a voltage obtained by a voltage of row N+1 minus a voltage of row N is greater than the second threshold value, and an absolute value of a voltage obtained by the voltage of row N+1 minus a voltage of row N+2 is less than the second threshold value, then the detection region includes the second pixel polarity arrangement.
13. The method for driving a display device claimed in claim 10 , wherein the step of when it is determined that each of the detection regions does not include the first pixel polarity arrangement, then a data driving circuit drives the display device in a progressive scanning method comprises:
when it is determined that each of the detection regions does not includes the first pixel polarity arrangement, but at least one detection region includes the second pixel polarity arrangement, then the data driving circuit drives the display device in the progressive scanning method.
14. The method for driving a display device claimed in claim 10 , wherein the first pixel polarity arrangement has opposite polarity between adjacent rows;
the second pixel polarity arrangement has two lines as a unit of the same polarity, adjacent units have opposite polarity.
15. The method for driving a display device claimed in claim 10 , wherein steps for determining whether the detection region includes the second pixel polarity arrangement are:
presetting a second threshold voltage;
if an absolute value of a voltage obtained by a voltage of row N+1 minus a voltage of row N is less than the second threshold value, and an absolute value of the voltage obtained by the voltage of row N+1 minus a voltage of row N+2 is greater than the second threshold value, then the detection region includes the second pixel polarity arrangement.
16. The method for driving a display device claimed in claim 10 , wherein the step of when it is determined that each of the detection regions does not include the first pixel polarity arrangement, then a data driving circuit drives the display device in a progressive scanning method comprises:
when it is determined that each of the detection regions does not includes the first pixel polarity arrangement and the second pixel polarity arrangement, then the data driving circuit drives the display device in the progressive scanning method.