CN-121999704-A - Display device, method of operating the same, and electronic device

Abstract

A display device, a method of operating the display device, and an electronic device are provided. The display apparatus may include a display panel including pixels, a gate driver configured to output a gate signal to the pixels through gate lines extending in a first direction, a data driver configured to output a data voltage to the pixels through data lines extending in a second direction intersecting the first direction, and a driving controller configured to control the gate driver and the data driver to determine a sub display region of a plurality of sub display regions of the display panel parallel to the second direction, in which output image data of a previous frame is identical to output image data of a current frame, as the same data region, and to perform a low power mode operation in which output image data corresponding to the same data region is not transferred to the data driver in the current frame.

Inventors

• Lin Xuangao
• JIN YUCHENG

Assignees

• 三星显示有限公司

Dates

Publication Date

20260508

Application Date

20251030

Priority Date

20241101

Claims (20)

1. 1. A display device, comprising: A display panel including pixels; A gate driver configured to output a gate signal to the pixel through a gate line extending in a first direction; A data driver configured to output a data voltage to the pixel through a data line extending in a second direction intersecting the first direction, and A drive controller configured to: Controlling the gate driver and the data driver, Determining a sub-display area of a plurality of sub-display areas of the display panel parallel to the second direction, in which the output image data of a previous frame is identical to the output image data of a current frame, as the same data area, and A low power mode operation is performed in which the output image data corresponding to the same data region is not transferred to the data driver in the current frame.
2. 2. The display device of claim 1, wherein the drive controller is configured to perform the low power mode operation by turning off at least one component included in the data driver.
3. 3. The display device of claim 2, wherein the data driver includes a plurality of receiving blocks, each of the plurality of receiving blocks corresponding to a respective one of the plurality of sub-display areas, Wherein each of the plurality of receiving blocks is configured to receive the output image data corresponding to the respective sub-display area, and Wherein the drive controller is configured to turn off a reception block corresponding to the same data area among the plurality of reception blocks in the current frame.
4. 4. The display device of claim 1, wherein the drive controller is configured to perform the low power mode operation by turning off at least one component included in the drive controller.
5. 5. The display device of claim 4, wherein the driving controller includes a plurality of transport blocks, each of the plurality of transport blocks corresponding to a respective one of the plurality of sub-display areas, Wherein each of the plurality of transport blocks is configured to transmit the output image data corresponding to the respective sub-display area to the data driver, and Wherein the drive controller is configured to close a transport block corresponding to the same data area among the plurality of transport blocks in the current frame.
6. 6. The display device according to claim 1, wherein the drive controller is configured to perform the low power mode operation by turning off at least one component included in the data driver and at least one component included in the drive controller.
7. 7. The display device of claim 6, wherein the data driver comprises a plurality of receiving blocks, each of the plurality of receiving blocks corresponding to a respective one of the plurality of sub-display areas, Wherein each of the plurality of receiving blocks is configured to receive the output image data corresponding to the respective sub-display area, Wherein the drive controller includes a plurality of transport blocks, each of the plurality of transport blocks corresponding to a respective one of the plurality of sub-display areas, Wherein each of the plurality of transport blocks is configured to transmit the output image data corresponding to the respective sub-display area to a respective one of the plurality of receive blocks, and Wherein the drive controller is configured to: closing a receiving block corresponding to the same data area among the plurality of receiving blocks in the current frame, and And closing the transmission blocks corresponding to the same data area in the plurality of transmission blocks in the current frame.
8. 8. The display device according to claim 1, wherein the drive controller is configured to transmit a plurality of protocol signals to the data driver through a plurality of data transmission lines configured to transmit the output image data in a blanking period of the previous frame, each of the plurality of protocol signals corresponding to a respective one of the plurality of sub-display areas, and Wherein each of the plurality of protocol signals includes a low power mode entry signal and a low power mode termination signal indicating whether the low power mode operation is to be performed on the corresponding one of the plurality of sub-display areas in the current frame.
9. 9. The display apparatus of claim 8, wherein the drive controller is configured to perform the low power mode operation in the current frame on a first target sub-display area of the plurality of sub-display areas corresponding to the low power mode entry signal having an activation level.
10. 10. The display apparatus of claim 8, wherein the drive controller is configured to terminate the low power mode operation in the current frame for a second target sub-display area of the plurality of sub-display areas corresponding to the low power mode termination signal having an activation level.
11. 11. The display device according to claim 1, wherein the drive controller is configured to transmit a plurality of low power signals to the data driver through a signal transmission line different from a data transmission line used to transmit the output image data, each of the plurality of low power signals indicating whether the low power mode operation is to be performed on a corresponding one of the plurality of sub display areas.
12. 12. The display device of claim 11, wherein the drive controller is configured to: Performing the low power mode operation on a first target sub-display area of the plurality of sub-display areas corresponding to the first low power signal in response to a first low power signal of the plurality of low power signals having an activation level, and Normal mode operation is performed in which the data driver receives the output image data for a second target sub-display area corresponding to a second low power signal of the plurality of sub-display areas in response to the second low power signal having a deactivation level.
13. 13. A method of operating a display device in which a gate line extends in a first direction and a data line extends in a second direction intersecting the first direction, the method comprising: Determining a sub-display area in which output image data of a previous frame is identical to output image data of a current frame among a plurality of sub-display areas of a display panel of the display device as an identical data area, and A low power mode operation is performed in which the output image data corresponding to the same data region is not transferred to a data driver in the current frame.
14. 14. The method of claim 13, wherein the performing of the low power mode operation comprises shutting down at least one component included in the data driver.
15. 15. The method of claim 14, wherein the data driver comprises a plurality of receive blocks, each of the plurality of receive blocks corresponding to a respective one of the plurality of sub-display areas, and the method further comprises: Receiving, by each of the plurality of receiving blocks, the output image data corresponding to the respective sub-display area, and And closing a receiving block corresponding to the same data area in the plurality of receiving blocks in the current frame.
16. 16. The method of claim 13, wherein the performing of the low power mode operation includes shutting down at least one component included in a drive controller.
17. 17. The method of claim 16, wherein the drive controller comprises a plurality of transport blocks, each transport block of the plurality of transport blocks corresponding to a respective sub-display area of the plurality of sub-display areas, and the method further comprises: Transmitting the output image data corresponding to the respective one of the plurality of sub-display areas to the data driver by each of the plurality of transmission blocks, and And closing the transmission blocks corresponding to the same data area in the plurality of transmission blocks in the current frame.
18. 18. The method of claim 13, further comprising: Transmitting, by a drive controller, a plurality of protocol signals to the data driver of the display device through a data transmission line for transmitting the output image data corresponding to each of the plurality of sub-display areas in a blanking period of the previous frame, each of the plurality of protocol signals corresponding to a corresponding one of the plurality of sub-display areas, Wherein each of the plurality of protocol signals includes a low power mode entry signal and a low power mode termination signal indicating whether the low power mode operation is to be performed on the corresponding one of the plurality of sub-display areas in the current frame.
19. 19. The method of claim 18, wherein the performing of the low power mode operation comprises performing the low power mode operation in the current frame on a first target sub-display area of the plurality of sub-display areas corresponding to the low power mode entry signal having an activation level, and the method further comprises: The low power mode operation is terminated in the current frame for a second target sub-display area of the plurality of sub-display areas corresponding to the low power mode termination signal having the activation level.
20. 20. An electronic device, comprising: the display device according to any one of claims 1 to 12, and A processor configured to generate control signals and input image data sets, Wherein the driving controller is configured to control the gate driver and the data driver based on the control signal and the input image data group.

Description

Display device, method of operating the same, and electronic device Technical Field Some example embodiments of the inventive concepts relate to a display device, a method of operating a display device, and an electronic device. Background The display device may include a display panel and a display panel driver. The display panel may include gate lines, data lines, and/or pixels connected to the gate lines and the data lines. The display panel driver may include a gate driver that supplies a gate signal to the gate line, a data driver that supplies a data voltage to the data line, and/or a driving controller that controls the gate driver and the data driver. In recent years, a display device that performs a low power mode operation when a data signal (or output image data) of a previous frame is identical to a data signal (or output image data) of a current frame has been proposed. However, since the conventional display apparatus performs only the low power mode operation on the entire display area, the conventional display apparatus has a limitation in that the conventional display apparatus cannot perform the low power mode operation except for displaying the same still image frame by frame. Disclosure of Invention Some example embodiments of the inventive concepts provide a display apparatus that performs a low power mode operation on a sub-display area. Some example embodiments of the inventive concepts provide methods of operating a display device. Some example embodiments of the inventive concepts provide an electronic device including a display device. However, some example embodiments of the inventive concepts are not limited to the above-described example embodiments, and may be extended in various ways without departing from the spirit and scope of the inventive concepts. According to some example embodiments, a display apparatus may include a display panel including pixels, a gate driver configured to output a gate signal to the pixels through gate lines extending in a first direction, a data driver configured to output a data voltage to the pixels through data lines extending in a second direction intersecting the first direction, and a driving controller configured to control the gate driver and the data driver to determine a sub display region of a plurality of sub display regions of the display panel parallel to the second direction, in which output image data of a previous frame is identical to output image data of a current frame, as the same data region, and perform a low power mode operation in which output image data corresponding to the same data region is not transmitted to the data driver in the current frame. In some example embodiments, the drive controller may be configured to perform the low power mode operation by turning off at least one component included in the data driver. In some example embodiments, the data driver may include a plurality of receiving blocks, each of the plurality of receiving blocks corresponding to a corresponding one of the plurality of sub-display areas, each of the plurality of receiving blocks may be configured to receive output image data corresponding to the corresponding sub-display area, and the driving controller may be configured to turn off a receiving block corresponding to the same data area among the plurality of receiving blocks in the current frame. In some example embodiments, the drive controller may be configured to perform the low power mode operation by turning off at least one component included in the drive controller. In some example embodiments, the driving controller may include a plurality of transport blocks, each of the plurality of transport blocks corresponding to a corresponding one of the plurality of sub-display areas, each of the plurality of transport blocks may be configured to transmit output image data corresponding to the corresponding sub-display area to the data driver, and the driving controller may be configured to turn off a transport block corresponding to the same data area among the plurality of transport blocks in the current frame. In some example embodiments, the drive controller may be configured to perform the low power mode operation by turning off at least one component included in the data driver and at least one component included in the drive controller. In some example embodiments, the data driver may include a plurality of receiving blocks, each of the plurality of receiving blocks corresponding to a respective one of the plurality of sub-display areas, each of the plurality of receiving blocks may be configured to receive the output image data corresponding to the respective sub-display area, the driving controller may include a plurality of transmitting blocks, each of the plurality of transmitting blocks corresponding to a respective one of the plurality of sub-display areas, each of the plurality of transmitting blocks may be configured to transmit the output image data corresponding to the