Search

US-20260127996-A1 - DISPLAY DEVICE, METHOD OF OPERATING THE DISPLAY DEVICE, AND ELECTRONIC DEVICE INCLUDING THE DISPLAY DEVICE

US20260127996A1US 20260127996 A1US20260127996 A1US 20260127996A1US-20260127996-A1

Abstract

A display device may include a display panel including pixels, a gate driver configured to output a gate signal to the pixels through a gate line extending in a first direction, a data driver configured to output a data voltage to the pixels through a data line extending in a second direction intersecting with the first direction, and a driving controller configured to the gate driver and the data driver, determine a same data region, of 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, perform a low power mode operation which does not transmit the output image data corresponding the same data region to the data driver in the current frame.

Inventors

  • HYUNHO LIM
  • Yoosung Kim

Assignees

  • SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date
20260507
Application Date
20250815
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 pixels through a gate line extending in a first direction; a data driver configured to output a data voltage to the pixels through a data line extending in a second direction intersecting with the first direction; and a driving controller configured to control the gate driver and the data driver, determine a same data region, of 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, and perform a low power mode operation which does not transmit the output image data corresponding the same data region to the data driver in the current frame.
  2. 2 . The display device of claim 1 , wherein the driving controller is further 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 receiving block of the plurality of receiving blocks corresponding to a respective sub-display region of the plurality of sub-display regions, wherein each receiving block of the plurality of receiving blocks is configured to receive the output image data corresponding to the respective sub-display region, and wherein the driving controller is configured to turn off a receiving block, of the plurality of receiving blocks, corresponding to the same data region in the current frame.
  4. 4 . The display device of claim 1 , wherein the driving controller is further configured to perform the low power mode operation by turning off at least one component included in the driving controller.
  5. 5 . The display device of claim 4 , wherein the driving controller includes a plurality of transmitting blocks, each transmitting block of the plurality of transmitting blocks corresponding to a respective sub-display region of the plurality of sub-display regions, wherein each transmitting block of the plurality of transmitting blocks is configured to transmit the output image data corresponding to the respective sub-display region to the data driver, and wherein the driving controller is configured to turn off a transmitting block, of the plurality of transmitting blocks, corresponding to the same data region in the current frame.
  6. 6 . The display device of claim 1 , wherein the driving controller is further 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 driving controller.
  7. 7 . The display device of claim 6 , wherein the data driver includes a plurality of receiving blocks, each receiving block of the plurality of receiving blocks corresponding to a respective sub-display region of the plurality of sub-display regions, wherein each receiving block of the plurality of receiving blocks is configured to receive the output image data corresponding to the respective sub-display region, wherein the driving controller includes a plurality of transmitting blocks, each transmitting block of the plurality of transmitting blocks corresponding to a respective sub-display region of the plurality of sub-display regions, wherein each transmitting block of the plurality of transmitting blocks is configured to transmit the output image data corresponding to the respective sub-display region to a respective receiving block of the plurality of receiving blocks, and wherein the driving controller is configured to turn off a receiving block, of the plurality of receiving blocks, corresponding to the same data region in the current frame, and turn off a transmitting block, of the plurality of transmitting blocks, corresponding to the same data region in the current frame.
  8. 8 . The display device of claim 1 , wherein the driving controller is configured to transmit, in a blank period of the previous frame, a plurality of protocol signals to the data driver through a plurality of data transmitting lines configured to transmit the output image data in the blank period of the previous frame, each protocol signal of the plurality of protocol signals corresponding to a respective sub-display region of the plurality of sub-display regions, and wherein each protocol signals of the plurality of protocol signals includes a low power mode entrance signal and a low power mode termination signal indicating whether to perform the low power mode operation for a respective sub-display region of the plurality of sub-display regions in the current frame.
  9. 9 . The display device of claim 8 , wherein the driving controller is configured to perform the low power mode operation for a first target sub-display region, of the plurality of sub-display regions, corresponding to the low power mode entrance signal having an activation level in the current frame.
  10. 10 . The display device of claim 8 , wherein the driving controller is configured to terminate the low power mode operation for a second target sub-display region, of the plurality of sub-display regions, corresponding to the low power mode termination signal having an activation level in the current frame.
  11. 11 . The display device of claim 1 , wherein the driving controller is configured to transmit, to the data driver through signal transmitting lines different from data transmitting lines for transmitting the output image data, a plurality of low power signals, each low power signal of the plurality of low power signals indicating whether to perform the low power mode operation for a respective sub-display region of the plurality of sub-display regions.
  12. 12 . The display device of claim 11 , wherein the driving controller is configured to perform the low power mode operation for a first target sub-display region, of the plurality of sub-display regions, corresponding to a first low power signal of the plurality of low power signals in response to the first low power signal having an activation level, and perform a normal mode operation in which the data driver receives the output image data for a second target sub-display region, of the plurality of sub-display regions, corresponding to a second low power signal of the plurality of low power signals 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 with the first direction, the method comprising: determining a same data region, of a sub-display region of a plurality of sub-display regions of a display panel of the display device, in which output image data of a previous frame is identical to output image data of a current frame; and performing a low power mode operation in which the output image data corresponding to the same data region is not transmitted to a data driver in the current frame.
  14. 14 . The method of claim 13 , wherein the performing the low power mode operation includes turning off at least one component included in the data driver.
  15. 15 . The method of claim 14 , wherein the data driver includes a plurality of receiving blocks, each receiving block of the plurality of receiving blocks corresponding to a respective sub-display region of the plurality of sub-display regions, the method further comprising: receiving, by the plurality of receiving blocks, the output image data corresponding to the respective sub-display region, and turning off a receiving block, of the plurality of receiving blocks, corresponding to the same data region in the current frame.
  16. 16 . The method of claim 13 , further comprising: performing the low power mode operation by turning off at least one component included in a driving controller.
  17. 17 . The method of claim 16 , wherein the driving controller includes a plurality of transmitting blocks, each transmitting block of the plurality of transmitting blocks corresponding to a respective sub-display region of the plurality of sub-display regions, the method further comprising: transmitting, by each transmitting block of the plurality of transmitting blocks, the output image data corresponding to the respective sub-display region of the plurality of sub-display regions, to the data driver, and turning off a transmitting block, of the plurality of transmitting blocks, corresponding to the same data region the current frame.
  18. 18 . The method of claim 13 , further comprising: transmitting, by a driving controller in a blank period of the previous frame, a plurality of protocol signals, each protocol signal of the plurality of protocol signals corresponding to a respective sub-display region of the plurality of sub-display regions, to the data driver of the display device through data transmitting lines for transmitting the output image data corresponding to each sub-display region of the plurality of sub-display regions in a blank period of the previous frame, and wherein each protocol signal of the plurality of protocol signals includes a low power mode entrance signal and a low power mode termination signal indicating whether to perform the low power mode operation for a respective sub-display region of the plurality of sub-display regions in the current frame.
  19. 19 . The method of claim 18 , wherein the performing the low power mode operation includes performing the low power mode operation for a first target sub-display region, of the plurality of sub-display regions, corresponding to the low power mode entrance signal having an activation level, and the method further comprises: terminating the low power mode operation for a second target sub-display region, of the plurality of sub-display regions, corresponding to the low power mode termination signal having the activation level in the current frame.
  20. 20 . An electronic device comprising: a display panel including pixels; a gate driver configured to output a gate signal to the pixels through a gate line extending in a first direction; a data driver configured to output a data voltage to the pixels through a data line extending in a second direction; a driving controller configured to control the gate driver and the data driver based on a control signal and an input image data group; and a processor configured to generate the control signal and the input image data group, wherein the driving controller is further configured to determines a same data region, of 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, and perform a low power mode operation which does not transmit the output image data corresponding the same data region to the data driver in the current frame.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application claims priority under 35 USC § 119 to Korean Patent Application No. 10-2024-0153284 filed on Nov. 1, 2024, in the Korean Intellectual Property Office (KIPO), the entire disclosure of which is incorporated by reference herein. BACKGROUND A 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 which provides a gate signal to the gate lines, a data driver which provides a data voltage to the data lines, and/or a driving controller which controls the gate driver and the data driver. Recently, The display device that performs a low power mode operation has been proposed when a data signal of a previous frame is identical to a data signal of a current frame. However, as a conventional display device only performs the low power mode operation for an entire display region, the conventional display device has a limitation that the conventional display device cannot perform the low power mode operation except when displaying the same still image from frame to frame. SUMMARY Some example embodiments of the inventive concepts provide a display device which performs a low power mode operation for a sub-display region. Some example embodiments of the inventive concepts provide a method of operation the display device. Some example embodiments of the inventive concepts provide an electronic device including the display device. However, some example embodiments of the inventive concepts are not limited to the above example embodiments, and may be variously extended without departing from the spirit and scope of the inventive concepts. According to some example embodiments, a display device may include a display panel including pixels, a gate driver configured to output a gate signal to the pixels through a gate line extending in a first direction, a data driver configured to output a data voltage to the pixels through a data line extending in a second direction intersecting with the first direction, and a driving controller configured to control the gate driver and the data driver, determine a same data region, of 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 the current frame, and perform a low power mode operation which does not transmit the output image data corresponding the same data region to the data driver in the current frame. In some example embodiments, the driving controller may be further configured to perform the low power mode operation by turning off at least one of component included in the data driver. In some example embodiments, the data driver may include a plurality of receiving blocks, each receiving block of the plurality of receiving blocks corresponding to a respective sub-display region of the plurality of sub-display regions, each receiving block of the plurality of receiving blocks may be configured to receive the output image data corresponding to the respective sub-display region, and the driving controller may be configured to turn off a receiving block, of the plurality of receiving blocks, corresponding to the same data region in the current frame. In some example embodiments, when driving controller may be further configured to perform the low power mode operation by turning off at least one of component included in the driving controller. In some example embodiments, the driving controller may include a plurality of transmitting blocks, each transmitting block of the plurality of transmitting blocks corresponding to a respective sub-display region of the plurality of sub-display regions, each transmitting block of the plurality of transmitting blocks may be configured to transmit the output image data corresponding to the respective sub-display region to the data driver, and the driving controller may be configured to turn off a transmitting block, of the plurality of transmitting blocks, corresponding to the same data region in the current frame. In some example embodiments, the driving controller is further configured to perform the low power mode operation by turning off at least one component included in the driving controller. In some example embodiments, the data driver may include a plurality of receiving blocks, each receiving block of the plurality of receiving blocks corresponding to a respective sub-display region of the plurality of sub-display regions, each receiving block of the plurality of receiving blocks may be configured to receive the output image data corresponding to the respective of the sub-display region, the driving controller may include a plurality of transmitting blocks, each transmitting block of the plurality of transmitting blocks corresponding to a respective sub-dis