Electronic device including a display device for not transmitting image data during periods having same data and method thereof
A display device including: a display panel including a plurality of pixels; a data driver configured to provide data voltages to the plurality of pixels; and a controller configured to control the data driver, to detect a same data region of the display panel when first image data in a current frame period is the same as second image data in a previous frame period, and not to transfer the first image data to the data driver in the current frame period.
1. An electronic device comprising:
a processor configured to provide input image data; and
a display device configured to receive the input image data from the processor, and to display an image based on the input image data, the display device comprising:
a display panel including a plurality of pixels;
a data driver configured to provide data voltages to the plurality of pixels;
a controller configured to control the data driver, to detect a same data region of the display panel when first image data in a current frame period is at least partially the same as second image data in a previous frame period, and not to transfer the first image data to the data driver in a same data period corresponding to the same data region within the current frame period;
a differential signal line including a first line and a second line located between the controller and the data driver, and configured to transfer the first and second image data;
a switch coupled between the first line and the second line; and
a termination resistor coupled in series with the switch between the first line and the second line,
wherein, in the same data period corresponding to the same data region within the current frame period, a receiving block of the data driver controls the switch to be turned off.
2. The electronic device of claim 1 , wherein, in the same data period corresponding to the same data region within the current frame period, at least a portion of components of the data driver is turned off.
3. The electronic device of claim 2 , wherein, in the same data period, the receiving block or an analog block of the data driver is turned off.
4. The electronic device of claim 1 , wherein, during a predetermined period before an end time point of the same data period, the controller transfers a clock training pattern to the data driver.
5. The electronic device of claim 1 , wherein storage capacitors of the plurality of pixels in the same data region do not receive the data voltages from the data driver in the current frame period, and
wherein the plurality of pixels in the same data region emits light in the current frame period based on the data voltages that are stored in the storage capacitors in the previous frame period.
6. The electronic device of claim 1 , wherein, in the same data period corresponding to the same data region within the current frame period, the data driver applies a shut down mode data voltage to a plurality of data lines of the display panel, and the shut down mode data voltage is not transferred to storage capacitors of the plurality of pixels in the same data region.
7. The electronic device of claim 1 , wherein the data driver includes:
a plurality of output buffers coupled to a plurality of data lines of the display panel; and
a plurality of switches located between output terminals of the plurality of output buffers, and
wherein, in the same data period corresponding to the same data region within the current frame period, the plurality of switches is turned on to couple the output terminals of the plurality of output buffers to each other, a first portion of the plurality of output buffers applies a shut down mode data voltage to the plurality of data lines, and a second portion of the plurality of output buffers is turned off.
8. The electronic device of claim 1 , wherein the data driver includes:
a plurality of output buffers coupled to a plurality of data lines of the display panel;
at least one additional output buffer; and
a plurality of switches located between output terminals of the plurality of output buffers and an output terminal of the additional output buffer, and
wherein, in the same data period corresponding to the same data region within the current frame period, the plurality of switches is turned on to couple the output terminals of the plurality of output buffers and the output terminal of the additional output buffer, the additional output buffer applies a shut down mode data voltage to the plurality of data lines, and the plurality of output buffers is turned off.
9. The electronic device of claim 1 , wherein the data driver includes:
a plurality of output buffers coupled to a plurality of data lines of the display panel;
at least one repair output buffer; and
a plurality of switches located between output terminals of the plurality of output buffers and an output terminal of the repair output buffer, and
wherein, in the same data period corresponding to the same data region within the current frame period, the plurality of switches is turned on to couple the output terminals of the plurality of output buffers and the output terminal of the repair output buffer, the repair output buffer applies a shut down mode data voltage to the plurality of data lines, and the plurality of output buffers is turned off.
10. The electronic device of claim 1 , wherein the controller detects the same data region in each frame period.
11. The electronic device of claim 1 , wherein the controller transfers frame configuration data to the data driver in a blank period of each frame period through a data transfer line, and
wherein the frame configuration data includes a shut down mode bit representing whether the data driver operates in a shut down mode.
12. The electronic device of claim 1 , wherein the controller detects a region of the display panel including at least one pixel row as the same data region.
13. The electronic device of claim 1 , wherein the controller transfers frame configuration data to the data driver in a blank period of each frame period through a data transfer line, and
wherein the frame configuration data includes:
a shut down mode bit representing whether the data driver operates in a shut down mode in the same data period corresponding to the same data region;
same data region start bits indicating a first pixel row of the same data region; and
same data region end bits indicating a last pixel row of the same data region.
14. The electronic device of claim 1 , wherein the controller transfers active line data for each pixel row of the display panel in an active period of each frame period through a data transfer line, and the active line data includes line configuration data,
wherein the line configuration data for a first pixel row of the same data region includes a shut down mode bit having a first value indicating that the data driver operates in a shut down mode, and
wherein the line configuration data for a pixel row next to a last pixel row of the same data region includes a shut down mode bit having a second value indicating that the data driver operates in a normal driving mode.
15. The electronic device of claim 1 , further comprising:
a scan driver configured to provide scan signals to the plurality of pixels,
wherein the scan driver does not provide the scan signals to the same data region in the current frame period.
16. The electronic device of claim 1 , wherein each of the plurality of pixels includes at least one n-type metal oxide semiconductor (NMOS) transistor.
17. An electronic device comprising:
a processor configured to provide input image data; and
a display device configured to receive the input image data from the processor, and to display an image based on the input image data, the display device comprising:
a display panel including a plurality of pixels;
a data driver configured to provide data voltages to the plurality of pixels; and
a controller configured to control the data driver, to detect a same data region of the display panel when first image data in a current frame period is at least partially the same as second image data in a previous frame period, and not to transfer the first image data to the data driver in a same data period corresponding to the same data region within the current frame period,
wherein the data driver includes:
a plurality of output buffers coupled to a plurality of data lines of the display panel; and
a plurality of switches located between output terminals of the plurality of output buffers, and
wherein, in the same data period corresponding to the same data region within the current frame period, the plurality of switches is turned on to couple the output terminals of the plurality of output buffers to each other, a first portion of the plurality of output buffers applies a shut down mode data voltage to the plurality of data lines, and a second portion of the plurality of output buffers is turned off.
18. The electronic device of claim 17 , further comprising:
a differential signal line including a first line and a second line located between the controller and the data driver, and configured to transfer the first and second image data;
a switch coupled between the first line and the second line; and
a termination resistor coupled in series with the switch between the first line and the second line,
wherein, in the same data period corresponding to the same data region within the current frame period, a receiving block of the data driver controls the switch to be turned off.
19. The electronic device of claim 17 , wherein, during a predetermined period before an end time point of the same data period, the controller transfers a clock training pattern to the data driver.
20. The electronic device of claim 17 , wherein the controller transfers frame configuration data to the data driver in a blank period of each frame period through a data transfer line, and
wherein the frame configuration data includes a shut down mode bit representing whether the data driver operates in a shut down mode.