US-12620340-B2 - Display device and method of driving the same, and electronic device

US12620340B2US 12620340 B2US12620340 B2US 12620340B2US-12620340-B2

Abstract

A display device includes a pixel unit including pixels connected to data lines and scan lines, and a timing controller for comparing input numbers of commands included in command data with threshold values which corresponds to the input numbers, and shifting or maintaining a frame, which corresponds to a comparison result.

Inventors

Jeongmin SUNG

Assignees

SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20241022
Priority Date: 20240318

Claims (20)

1 . A display device comprising: a pixel unit including pixels connected to data lines and scan lines; and a timing controller configured to compare input numbers of commands included in command data with threshold values which corresponds to the input numbers, and shift or maintain a frame, which corresponds to a comparison result, wherein the frame is shifted by having an actual driving frequency in place different from a predetermined planned driving frequency.
2 . The display device of claim 1 , wherein, when a first command is input, the timing controller does not shift the frame when an input number of the first command is not equal to a first threshold value which corresponds to the first command.
3 . The display device of claim 2 , wherein the timing controller shifts a frame, which corresponds to the predetermined planned driving frequency, and reflects the first command when the frame is shifted.
4 . The display device of claim 1 , wherein, when a first command is input, the timing controller shifts the frame such that the first command is reflected when an input number of the first command is equal to a first threshold value which corresponds to the first command.
5 . The display device of claim 1 , wherein the commands include at least one of a dimming level change command which corresponds to a maximum luminance change of the pixel unit, a frame variable command which corresponds to a frame shift, a gamma change command which corresponds to a gamma voltage change, and a sleep mode command which corresponds to a low power mode.
6 . The display device of claim 1 , wherein the timing controller includes: a command sensor configured to receive the command data and input data, and sense the commands included in the command data; and a frequency/luminance controller configured to shift or maintain the frame, which corresponds to a first command control signal or a second command control signal, which is supplied from the command sensor.
7 . The display device of claim 6 , wherein the command sensor includes: a storage unit configured to store count values and the threshold values, which correspond to the input numbers of the commands; a counter configured to increase a count value which corresponds to each of the commands when the commands are input; and a controller configured to compare the count values which corresponds to the respective commands with the corresponding threshold values, and output the first command control signal or the second command control signal, which corresponds to a comparison result.
8 . The display device of claim 7 , wherein the controller: compares a first count value which corresponding to a first command included in the commands with a first threshold value which corresponds to the first command when the first command is input; and outputs the first command control signal when the first count value is less than the first threshold value, and outputs the second command control signal when the first count value and the first threshold value are the same.
9 . The display device of claim 8 , wherein the frequency/luminance controller does not shift the frame when the first command control signal is input.
10 . The display device of claim 9 , wherein the frequency/luminance controller shifts a frame, which corresponds to the predetermined planned driving frequency when the first command control signal is input, and reflects the first command when the frame is shifted.
11 . The display device of claim 8 , wherein the frequency/luminance controller reflects the first command while shifting a frame when the second command control signal is input.
12 . The display device of claim 8 , wherein the controller initializes the first count value when the second command control signal is output.
13 . The display device of claim 1 , further comprising: a data driver configured to drive the data lines, under the control of the timing controller; and a scan driver configured to drive the scan lines under the control of the timing controller.
14 . A method of driving a display device, the method comprising: inputting a first command to a timing controller; comparing an input number of the first command with a first threshold value; and shifting a frame of the display device when the input number of the first command and the first threshold value are the same, and not shifting the frame when the input number of the first command and the first threshold value are not the same, wherein the frame is shifted by having an actual driving frequency in place different from a predetermined planned driving frequency.
15 . The method of claim 14 , wherein, when the first command and the first threshold value are not the same, the timing controller shifts the frame, which corresponds to a predetermined planned driving frequency, and reflects the first command when the frame is shifted.
16 . The method of claim 14 , further comprising initializing the input number of the first command when the input number of the first command and the first threshold value are the same.
17 . The method of claim 14 , wherein the first threshold value is stored in a storage unit of the timing controller, and is changeable by an external processor.
18 . An electronic device comprising: a display module configured to display a predetermined image; an auxiliary processor configured to control the display module; and a processor configured to command data to the auxiliary processor, wherein the auxiliary processor compares input numbers of commands included in the command data with threshold values which correspond to the input numbers, and shifts or maintains a frame of the display module, which correspond to a comparison result, wherein the frame is shifted by having an actual driving frequency in place different from a predetermined planned driving frequency.
19 . The electronic device of claim 18 , wherein, when a first command is input, the auxiliary processor shifts a frame, which corresponds to the predetermined planned driving frequency when an input number of the first command and a first threshold value which corresponds to the first command are not the same, and reflects the first command when the frame is shifted.
20 . The electronic device of claim 18 , wherein, when a first command is input, the auxiliary processor reflects the first command while shifting a frame when an input number of the first command and a first threshold value which corresponds to the first command are the same.

Description

This application claims priority to Korean Patent Application No. 10-2024-0037350, filed on Mar. 18, 2024, and all the benefits accruing therefrom under 35 U.S.C. § 119, the content of which in its entirety is herein incorporated by reference. BACKGROUND 1. Technical Field The present invention generally relates to a display device, and more particularly to a display device and a method of driving the same, and an electronic device. 2. Description of the Related Art With the development of information technologies, the importance of a display device, which is a connection medium between a user and information, increases. Accordingly, display devices such as a liquid crystal display device and an organic light emitting display device are increasingly used. Images of various contents may be displayed by such a display. For example, various types of images such as still images, web pages, movies, and games may be displayed by the display device. When a still image is displayed by the display device, frequent frame shifts are not required. On the other hand, when a movie, a game or the like is displayed by the display device, frequent frame shifts are required. SUMMARY Embodiments of the invention provide a display device, a method of driving the display device, and an electronic device, which can minimize power consumption when being driven at various image refresh rates. In accordance with an aspect of the invention, there is provided a display device which includes a pixel unit including pixels connected to data lines and scan lines and a timing controller configured to compare input numbers of commands included in command data with threshold values that correspond to the input numbers, and shift or maintain a frame, corresponding to a comparison result. In an embodiment, when a first command is input, the timing controller may not shift the frame when an input number of the first command is not equal to a first threshold value corresponding to the first command. In an embodiment, the timing controller may shift a frame, corresponding to a predetermined planned driving frequency, and reflect the first command when the frame is shifted. In an embodiment, when a first command is input, the timing controller may shift the frame such that the first command is reflected when an input number of the first command is equal to a first threshold value corresponding to the first command. In an embodiment, the commands may include at least one of a dimming level change command which corresponds to a maximum luminance change of the pixel unit, a frame variable command which corresponds to a frame shift, a gamma change command which corresponds to a gamma voltage change, and a sleep mode command which corresponds to a low power mode. In an embodiment, the timing controller may include a command sensor configured to receive the command data and input data, and sense the commands included in the command data and a frequency/luminance controller configured to shift or maintain the frame, which corresponds to a first command control signal or a second command control signal and which is supplied from the command sensor. In an embodiment, the command sensor may include a storage unit configured to store count values and the threshold values, which correspond to the input numbers of the commands, a counter configured to increase a count value which corresponds to each of the commands when the commands are input and a controller configured to compare the count values which corresponds to the respective commands with the corresponding threshold values, and output the first command control signal or the second command control signal, which corresponds to a comparison result. In an embodiment, the controller may compare a first count value corresponding to a first command included in the commands with a first threshold value corresponding to the first command when the first command is input. The controller may output the first command control signal when the first count value is less than the first threshold value and output the second command control signal when the first count value and the first threshold value are the same. In an embodiment, the frequency/luminance controller may not shift the frame when the first command control signal is input. In an embodiment, the frequency/luminance controller may shift a frame, corresponding to a predetermined planned driving frequency when the first command control signal is input, and reflect the first command when the frame is shifted. In an embodiment, the frequency/luminance controller may reflect the first command while shifting a frame when the second command control signal is input. In an embodiment, the controller may initialize the first count value when the second command control signal is output. In an embodiment, the display device may further include a data driver configured to drive the data lines, under the control of the timing controller and a scan driver configured to d