Display apparatus and control method thereof, device

Abstract

The application discloses a display device and a control method and equipment thereof, and relates to the display field. The method comprises the following steps: in the case that it is detected that a current frame displayed by the display device is a static picture, the display device is controlled to stop refreshing or reduce a refresh rate; in the case that it is detected that the current frame is a dynamic picture, according to a gray scale difference value of each pixel in the current frame determined by the current frame and a previous frame, a gray scale jump pixel with a gray scale difference value greater than or equal to a preset jump threshold value is determined in the current frame, and a compensation pixel with a gray scale difference value less than the preset jump threshold value and triggered by the gray scale jump pixel is determined; the gray scale value of the gray scale jump pixel is reduced, and the gray scale value of the compensation pixel is increased. The application solves the technical problem that the display device cannot simultaneously consider low power consumption and high-quality display in a high refresh rate scene.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to display devices and their control methods and equipment. Background Technology

[0002] Currently, most display devices (such as Liquid Crystal Displays, LCDs) typically employ higher refresh rates to improve image quality, enabling faster movement of video content and smoother visuals. However, high refresh rates generally suffer from excessive power consumption. Conversely, reducing power consumption at high refresh rates can compromise display quality. Therefore, current display devices face a technical challenge in achieving both low power consumption and high-quality display at high refresh rates.

[0003] The above content is only used to help understand the technical solutions of the embodiments of this application, and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this application is to provide a display device and its control method and apparatus, which aims to solve the technical problem that display devices cannot simultaneously achieve low power consumption and high-quality display in high refresh rate scenarios.

[0005] To achieve the above objectives, embodiments of this application provide a control method for a display device, comprising:

[0006] If the current frame displayed by the display device is detected to be a static image, the display device is controlled to stop refreshing or reduce the refresh rate;

[0007] When the current frame is detected as a dynamic scene, based on the grayscale difference of each pixel in the current frame determined by the current frame and the previous frame, grayscale jump pixels with grayscale difference greater than or equal to a preset jump threshold are determined in the current frame, and compensation pixels with grayscale difference less than the preset jump threshold and whose grayscale jump pixels cause voltage drop are determined.

[0008] Decrease the grayscale value of the grayscale transition pixel and increase the grayscale value of the compensation pixel.

[0009] In one embodiment, based on the grayscale value of each pixel in the display device in the current frame and the grayscale value in the previous frame, the absolute value of the grayscale difference between the current frame and the previous frame is calculated to obtain the grayscale difference value of each pixel.

[0010] If the grayscale difference of each pixel is less than a preset transition threshold, the display device is determined to be in static mode, and the number of times the display device is continuously in static mode is accumulated. If the number of static times is greater than or equal to a preset number, the current frame is determined to be a static image.

[0011] If there is a pixel grayscale difference in the current frame that is greater than or equal to the preset jump threshold, the current frame is determined to be a dynamic image.

[0012] In one embodiment, the step of determining the compensation pixel whose grayscale difference is less than the preset transition threshold and whose voltage drop is caused by the grayscale transition pixel includes:

[0013] In the current frame, a target pixel whose grayscale difference is less than a preset jump threshold is identified;

[0014] For each target pixel, if the grayscale difference of the target pixel is greater than a preset static threshold, and there are grayscale jump pixels from the first column pixel of the pixel row where the target pixel is located to the target pixel, the target pixel is determined to be a compensation pixel.

[0015] In one embodiment, the step of reducing the grayscale value of the grayscale transition pixel and increasing the grayscale value of the compensation pixel includes:

[0016] For each pixel row in the display device that has a grayscale jump pixel, the total voltage jump variable of the pixel row is calculated based on the voltage difference corresponding to the grayscale difference of each grayscale jump pixel in the pixel row, and the total voltage jump variable is normalized according to a preset voltage jump upper limit to obtain the voltage jump degree of the pixel row.

[0017] For each grayscale jump pixel, based on the voltage jump degree of the pixel row where the grayscale jump pixel is located, the preset voltage reduction coefficient, and the original grayscale value of the grayscale jump pixel in the current frame, the target reduced grayscale value of the grayscale jump pixel is determined, and the original grayscale value of the grayscale jump pixel is reduced to the target reduced grayscale value, so as to reduce the grayscale value of the grayscale jump pixel.

[0018] For each compensated pixel, based on the voltage jump level of the pixel row where the compensated pixel is located, the preset boost coefficient, and the original grayscale value of the compensated pixel in the current frame, the target boosted grayscale value of the compensated pixel is determined, and the original grayscale value of the compensated pixel is increased to the target boosted grayscale value, so as to improve the grayscale value of the compensated pixel.

[0019] In one embodiment, the pixel electrode of each pixel in the display device is connected to a storage capacitor, a coupling capacitor, and a liquid crystal capacitor;

[0020] After the steps of reducing the grayscale value of the grayscale transition pixel and increasing the grayscale value of the compensation pixel, the control method of the display device further includes:

[0021] For each pixel in the display device, the compensation voltage of the pixel is obtained based on the current grayscale value of the pixel;

[0022] The voltage compensation amplitude of the pixel is determined based on the compensation voltage, the storage capacitor, the coupling capacitor, and the liquid crystal capacitor.

[0023] The voltage transition direction of the pixel is determined, and a transition signal generated by the voltage transition direction and the voltage compensation amplitude is applied to the coupling capacitor to perform voltage compensation on the pixel.

[0024] In one embodiment, the coupling capacitor is connected to a compensation signal line;

[0025] The step of determining the voltage transition direction of the pixel and applying a transition signal generated by the voltage transition direction and the voltage compensation amplitude to the coupling capacitor includes:

[0026] The polarity of the current frame is detected, and the voltage transition direction of the pixel is determined based on the polarity of the current frame. When the current frame is a positive polarity frame, the voltage transition direction is positive compensation, and when the current frame is a negative polarity frame, the voltage transition direction is negative compensation.

[0027] The switching signal is applied to the coupling capacitor through the compensation signal line.

[0028] In one embodiment, the coupling capacitors of even-numbered columns of pixels in the display device are sequentially connected to an even-numbered common electrode and an odd-numbered common electrode, and the coupling capacitors of odd-numbered columns of pixels in the display device are sequentially connected to an odd-numbered common electrode and an even-numbered common electrode.

[0029] The step of determining the voltage transition direction of the pixel and applying a transition signal generated by the voltage transition direction and the voltage compensation amplitude to the coupling capacitor includes:

[0030] The voltage transition direction of the pixel is determined based on the pixel column in which the pixel is located; wherein, when the pixel column in which the pixel is located is an odd-numbered column, the voltage transition direction of the pixel is positive compensation, and when the pixel column in which the pixel is located is an even-numbered column, the voltage transition direction of the pixel is negative compensation.

[0031] When the pixel is located in an even-numbered column, an inverse transition signal is applied to the even-numbered common electrode, and the inverse transition signal is restored through the odd-numbered common electrode to apply the transition signal to the coupling capacitance of the pixel.

[0032] When the pixel is located in an odd-numbered column, a reverse transition signal is applied to the odd-numbered common electrode, and the reverse transition signal is restored through the even-numbered common electrode to apply the transition signal to the coupling capacitance of the pixel.

[0033] In addition, to achieve the above objectives, this embodiment also provides a display device, which includes: a main control module, a timing controller, a source driver, and a display panel. The main control module is connected to the timing controller, the timing controller is connected to the source driver, and the source driver is connected to the display panel.

[0034] The main control module is used to identify the screen state of the current frame displayed on the display panel, and is also used to, when the screen state is identified as a dynamic screen, determine, based on the gray level difference of each pixel in the current frame determined by the current frame and the previous frame, identify gray level jumping pixels in the current frame whose gray level difference is greater than or equal to a preset jumping threshold, and determine compensation pixels whose gray level difference is less than the preset jumping threshold and whose gray level jumping pixels cause a voltage drop;

[0035] The timing controller is used to determine the target reduction of grayscale value for the grayscale jump pixel and the target increase of grayscale value for the compensation pixel. It is also used to control the display panel to stop refreshing or reduce the refresh rate when the screen state identified by the main control module is a static screen.

[0036] The source driver is used to drive the grayscale jump pixel display by reducing the grayscale value based on the target, and is also used to drive the compensation pixel display by increasing the grayscale value based on the target.

[0037] In one feasible embodiment, the display panel includes gate lines, data lines, and a plurality of pixels. For each pixel, the pixel includes two pixel circuits, and each pixel circuit includes a pixel electrode, a liquid crystal capacitor, a storage capacitor, a coupling capacitor, and a first transistor.

[0038] The pixel electrode is connected to the first end of the liquid crystal capacitor, the first end of the storage capacitor, and the first end of the coupling capacitor. The first end of the liquid crystal capacitor is also connected to the first end of the first transistor. The second end of the first transistor is connected to the gate line, and the third end of the first transistor is connected to the data line.

[0039] The second end of the liquid crystal capacitor is connected to a common electrode, the second end of the storage capacitor is connected to a bias voltage source, and the second end of the coupling capacitor is connected to a compensation signal line; or, in the even-numbered rows of pixels in the display panel, the second ends of the liquid crystal capacitor, the storage capacitor, and the coupling capacitor are all sequentially connected to the odd-numbered common electrode and the even-numbered common electrode, and in the odd-numbered rows of pixels in the display panel, the second ends of the liquid crystal capacitor, the storage capacitor, and the coupling capacitor are all sequentially connected to the even-numbered common electrode and the odd-numbered common electrode.

[0040] Furthermore, to achieve the above objectives, this application also provides a display device, which includes: a memory, a processor, and a program for a control method of the display device stored in the memory and executable on the processor. When the program for the control method of the display device is executed by the processor, it can implement the steps of the control method of the display device as described above.

[0041] Furthermore, to achieve the above objectives, embodiments of this application also provide a computer-readable storage medium storing a program for implementing a control method for a display device. When the program for the control method for the display device is executed by a processor, it implements the steps of the control method for the display device as described above.

[0042] In addition, to achieve the above objectives, this application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the control method for the display device as described above.

[0043] One or more technical solutions proposed in this application have at least the following technical effects: When the current frame displayed by the display device is detected to be a static image, this application can control the display device to stop refreshing or reduce the refresh rate, thereby reducing power consumption in high refresh rate scenarios; when the current frame is detected to be a dynamic image, gray-level transition pixels with gray-level difference values ​​greater than or equal to a preset transition threshold will be identified in the current frame, thereby identifying pixels with high gray-level transition degrees so that the gray-level values ​​of the gray-level transition pixels can be reduced in the future, thereby reducing power consumption and further mitigating horizontal crosstalk caused by gray-level transition pixels. Horizontal crosstalk exists because the transition value of gray-level transition pixels is high, and some pixels in the display device (such as compensation pixels) will be affected by gray-level transition pixels and generate voltage drops, thereby causing the gray-level values ​​displayed by the compensation pixels to not reach the target value, thus generating horizontal crosstalk and reducing the display quality of the display device. This application determines the grayscale jump pixels and compensation pixels in the current frame, reduces the grayscale value of the grayscale jump pixels, and increases the grayscale value of the compensation pixels. This reduces the jump rate of the grayscale jump pixels and compensates for the grayscale value of the compensation pixels. This not only reduces horizontal crosstalk to improve display quality but also reduces power consumption. Therefore, this application can solve the technical problem that display devices cannot simultaneously achieve low power consumption and high-quality display in high refresh rate scenarios. Attached Figure Description

[0044] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with those described herein and, together with the specification, serve to explain the principles of those embodiments.

[0045] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic flowchart of one embodiment of the control method for the display device according to this application.

[0047] Figure 2 This is a flowchart illustrating the process of determining whether the current frame is a static image in the control method of the display device according to an embodiment of this application;

[0048] Figure 3 This is a schematic diagram illustrating the display of pixels in the same pixel row in the previous frame and the current frame in the control method of the display device according to an embodiment of this application;

[0049] Figure 4This is a schematic diagram of the circuit connection between the pixel electrode of the pixel and the storage capacitor, coupling capacitor and liquid crystal capacitor in the control method of the display device according to the embodiments of this application;

[0050] Figure 5 This is a schematic diagram of the circuit connection between the coupling capacitor and the compensation signal line in the control method of the display device according to an embodiment of this application;

[0051] Figure 6 This is a schematic diagram of the signal timing of the data line and the compensation signal line in the control method of the display device according to an embodiment of this application;

[0052] Figure 7 This is a schematic flowchart illustrating an example of a control method for a display device according to an embodiment of this application.

[0053] Figure 8 This is a schematic diagram of the circuit connections corresponding to the odd-numbered and even-numbered columns of pixels in the control method of the display device according to an embodiment of this application.

[0054] Figure 9 This is a schematic flowchart illustrating another example of the control method for the display device in this application.

[0055] Figure 10 This is a schematic diagram of the display device modules according to an embodiment of this application;

[0056] Figure 11 This is a schematic diagram of the hardware operating environment involved in the control method of the display device in the embodiments of this application.

[0057] Symbol explanation:

[0058] Data line; Gate line; Clc, liquid crystal capacitor of the first pixel circuit; Cs1, storage capacitor of the first pixel circuit; Cs2, coupling capacitor of the first pixel circuit; Q1, first transistor of the first pixel circuit; Q2, second transistor of the first pixel circuit; VCOM, common electrode; VST, bias voltage source connected to the storage capacitor in the first pixel circuit; Vcouple, compensation signal line connected to the coupling capacitor in the first pixel circuit.

[0059] Clc`, the liquid crystal capacitor of the second pixel circuit; Cs1`, the storage capacitor of the second pixel circuit; Cs2`, the coupling capacitor of the second pixel circuit; Q1`, the first transistor of the second pixel circuit; VST`, the bias voltage source connected to the storage capacitor in the second pixel circuit; Vcouple`, the compensation signal line connected to the coupling capacitor in the second pixel circuit.

[0060] Com_even, even-numbered common electrode; Com_odd, odd-numbered common electrode;

[0061] 100. Main control module; 200. Timing controller; 300. Source driver; 400. Display panel.

[0062] The objectives, features, and advantages of the embodiments described in this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0063] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of the embodiments of this application and are not intended to limit the embodiments of this application.

[0064] To better understand the technical solutions of the embodiments of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0065] Liquid crystal displays (LCDs) have become the mainstream display technology due to their low power consumption, small size, and low cost. To improve image quality, techniques that increase refresh rates are typically employed. The advantage of a high refresh rate is that it allows for smoother display of fast-moving video content, such as video playback and games, enhancing the user's visual experience. However, high refresh rates present a challenge in balancing low power consumption and high display quality. Therefore, this application provides a control method for a display device. This method can differentiate between static and dynamic images, reduce horizontal crosstalk caused by excessive grayscale jumps in dynamic images, and lower power consumption in dynamic images. This allows for low-power operation and high-quality display even in high refresh rate scenarios. Specifically, in this embodiment, when the current frame displayed by the display device is detected to be a static image, if the display device detects that the current frame is a dynamic image, it will identify grayscale transition pixels in the current frame whose grayscale difference is greater than or equal to a preset transition threshold. This allows for the identification of pixels with a high degree of grayscale transition, enabling the subsequent reduction of the grayscale value of these transition pixels. This reduces power consumption and further mitigates horizontal crosstalk caused by grayscale transition pixels. Horizontal crosstalk exists because the transition value of grayscale transition pixels is high, and some pixels in the display device (such as compensation pixels) are affected by the grayscale transition pixels, resulting in a voltage drop. This causes the grayscale value displayed by the compensation pixels to fail to reach the target value, leading to horizontal crosstalk and a decrease in the display quality of the display device. This embodiment determines the grayscale jump pixels and compensation pixels in the current frame, reduces the grayscale value of the grayscale jump pixels, and increases the grayscale value of the compensation pixels. This reduces the jump rate of the grayscale jump pixels and compensates for the grayscale value of the compensation pixels. This not only reduces horizontal crosstalk to improve display quality but also reduces power consumption. Therefore, this embodiment can solve the technical problem that display devices cannot simultaneously achieve low power consumption and high-quality display in high refresh rate scenarios.

[0066] Based on this, embodiments of this application provide a control method for a display device, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the control method for the display device according to this application. The control method for the display device includes steps S10 to S30:

[0067] Step S10: If it is detected that the current frame displayed by the display device is a static image, control the display device to stop refreshing or reduce the refresh rate;

[0068] It should be noted that the display device can be a liquid crystal display (LCD) or other devices capable of displaying images, such as mobile terminals, wearable devices, etc. This embodiment does not specifically limit this. A static image represents a frame that is almost unchanged from the previous frame. For example, when the current frame is a static image, the pixel data of the current frame can be the same as the pixel data of the previous frame. The pixel data of the current frame includes the grayscale value of each pixel in the display device in the current frame, and the pixel data of the previous frame includes the grayscale value of each pixel in the display device in the previous frame.

[0069] When it is detected that the current frame displayed by the display device is a static image, the display device can be controlled to stop refreshing or reduce the refresh rate. Since the current frame is a static image, it means that the current frame is basically unchanged from the previous frame. Therefore, stopping refreshing or reducing the refresh rate will not affect the display quality of the display device, and can also reduce the power consumption of the display device.

[0070] For example, when the current frame is a static image, the MOS transistors (field-effect transistors) of each pixel row in the display device can be turned off, making the OE (Output Enable) signal invalid, thereby controlling the display device to stop refreshing. When refreshing stops, the pixel voltage of each pixel in the current frame is maintained in the state of the previous refresh by the capacitor connected to the pixel. In other embodiments, the refresh rate can also be reduced. For example, the MOS transistors of each pixel row are in the on state, the OE signal is valid, but the refresh rate is reduced. For example, the refresh rate can be reduced to a preset low refresh threshold. The preset low refresh threshold can be set based on actual conditions, and this embodiment does not specifically limit it.

[0071] Step S20: When the current frame is detected to be a dynamic scene, based on the gray level difference of each pixel in the current frame determined by the current frame and the previous frame, determine the gray level jumping pixels in the current frame whose gray level difference is greater than or equal to the preset jumping threshold, and determine the compensation pixels whose gray level difference is less than the preset jumping threshold and whose gray level jumping pixels cause a voltage drop.

[0072] It should be noted that a dynamic frame indicates a significant change between the current frame and the previous frame. For example, the grayscale difference of each pixel in the current frame can be determined based on its grayscale value in the current frame and its grayscale value in the previous frame. If there are pixels with a grayscale difference greater than a preset transition threshold, the current frame can be determined as a dynamic frame. After determining that the current frame is a dynamic frame, the grayscale transition pixels and compensation pixels in the current frame must be determined based on the grayscale difference of each pixel in the current frame. Grayscale transition pixels are pixels with a grayscale difference greater than the preset transition threshold, and compensation pixels are pixels with a grayscale difference less than the preset transition threshold, where a voltage drop is caused by one or more grayscale transition pixels.

[0073] For each pixel row, if there are no grayscale transition pixels in the row, there are also no compensation pixels in that row. Pixels that are neither grayscale transition pixels nor compensation pixels in dynamic scenes can be described as ordinary pixels. Ordinary pixels do not require additional grayscale value reduction or enhancement and can be displayed according to the grayscale values ​​normally set at high refresh rates. The preset transition threshold can be set based on actual conditions, and this embodiment does not impose specific limitations on it.

[0074] For example, when the current frame is detected to be a dynamic image, grayscale transition pixels with a grayscale difference greater than or equal to a preset transition threshold are determined from the current frame, and compensation pixels are determined from the current frame. For example, each pixel row of the dynamic image can be scanned to scan out the grayscale transition pixels and compensation pixels.

[0075] Step S30: Reduce the grayscale value of the grayscale transition pixel and increase the grayscale value of the compensation pixel.

[0076] It should be noted that a large grayscale jump value for a grayscale-jumping pixel indicates a large change in the driving voltage required to drive the pixel. In this embodiment, pixels in the same pixel row share a single source line, which transmits the driving voltage to each pixel in the row. Therefore, when a grayscale-jumping pixel exists in a pixel row, its voltage requirement will jump, which will lower the voltage level of the entire pixel row. This may result in insufficient charging of other pixels in the same pixel row, leading to uneven brightness stripes and horizontal crosstalk. Thus, grayscale-jumping pixels are the source of horizontal crosstalk. Therefore, in this embodiment, the grayscale value of the grayscale-jumping pixel needs to be reduced to decrease the jump value and alleviate horizontal crosstalk. Since the compensation pixel is still affected by the grayscale-jumping pixel and may also experience insufficient charging, its grayscale value needs to be increased to make it closer to the target value, thereby reducing horizontal crosstalk.

[0077] For example, the grayscale value of each grayscale transition pixel can be reduced, while the grayscale value of each compensation pixel can be increased.

[0078] This embodiment can control the display device to stop refreshing or reduce the refresh rate when it detects that the current frame displayed by the display device is a static image, thereby reducing power consumption in high refresh rate scenarios. When it detects that the current frame is a dynamic image, it will identify grayscale transition pixels in the current frame whose grayscale difference is greater than or equal to a preset transition threshold. This will identify pixels with a high degree of grayscale transition, so that the grayscale value of the grayscale transition pixels can be reduced in the future, thereby reducing power consumption. It can also further reduce the horizontal crosstalk caused by grayscale transition pixels. Horizontal crosstalk exists because the transition value of grayscale transition pixels is high, and some pixels in the display device (such as compensation pixels) will be affected by the grayscale transition pixels and generate voltage drop, which will cause the grayscale value displayed by the compensation pixels to not reach the target value, thus generating horizontal crosstalk and reducing the display quality of the display device. This embodiment determines the grayscale jump pixels and compensation pixels in the current frame, reduces the grayscale value of the grayscale jump pixels, and increases the grayscale value of the compensation pixels. This reduces the jump rate of the grayscale jump pixels and compensates for the grayscale value of the compensation pixels. This not only reduces horizontal crosstalk to improve display quality but also reduces power consumption. Therefore, this embodiment can solve the technical problem that display devices cannot simultaneously achieve low power consumption and high-quality display in high refresh rate scenarios.

[0079] In a feasible embodiment, the control method for the display device further includes steps X10 to X30:

[0080] Step X10: Based on the grayscale value of each pixel in the current frame and the grayscale value in the previous frame, calculate the absolute value of the grayscale difference between the current frame and the previous frame for each pixel, and obtain the grayscale difference value of each pixel.

[0081] It's important to note that the current frame is adjacent to the previous frame, and the previous frame was displayed earlier than the current frame. We can obtain the pixel data of the current frame and determine the grayscale value of each pixel in the current frame from that data. Similarly, we can obtain the pixel data of the previous frame and determine the grayscale value of each pixel in the previous frame. The grayscale difference of each pixel in the current frame is the absolute value of the difference between the pixel's grayscale value in the current frame and the previous frame. The grayscale difference reflects the amount of grayscale change of a pixel.

[0082] Step X20: If the grayscale difference of each pixel is less than the preset jump threshold, determine that the display device is in static mode, and accumulate the number of times the display device is continuously in static mode. If the number of static times is greater than or equal to the preset number, determine that the current frame is a static image.

[0083] It should be noted that when the grayscale difference of each pixel is less than the preset transition threshold, the display device is in static mode. The preset number of times can be determined based on the actual situation, and can be a value such as 2 or 3. This embodiment does not make a specific limitation on this. When the static number is n, it means that the display device is in static mode for n consecutive frames, where n is an integer. When the preset number is greater than 1, this embodiment can determine that the current frame is a static image only after the display device has been in static mode for at least the preset number of consecutive frames, thereby improving the reliability of determining static images. When the preset number is 1, it means that the current frame is a static image when the grayscale difference of each pixel in the current frame is less than the preset transition threshold. When the preset number is 1, the speed of determining static images can be improved, but the reliability may be lower and false positives are more likely. In practical applications, the preset number of times can be configured based on the actual situation. This embodiment does not make a specific limitation on this.

[0084] Step X30: If the grayscale difference of pixels in the current frame is greater than or equal to the preset jump threshold, the current frame is determined to be a dynamic image.

[0085] It should be noted that if there are pixels in the current frame with a grayscale difference greater than or equal to the preset transition threshold, the current frame can be determined to be a dynamic image. If there are pixels with a grayscale difference greater than or equal to the preset transition threshold, it means that there may be horizontal crosstalk in the current frame. Therefore, in order to reduce the impact of horizontal crosstalk, the current frame can be determined to be a dynamic image so that the grayscale value of the grayscale transition pixels can be reduced and the grayscale value of the compensation pixels can be increased.

[0086] In other embodiments, the current frame can be determined to be a dynamic frame only if at least a preset number of pixels in the current frame have a grayscale difference greater than or equal to a preset transition threshold. The preset number can be determined based on actual conditions, and this embodiment does not impose a specific limitation on it; the preset number can be one or more. When the preset number is multiple, if the number of pixels in the current frame whose grayscale difference is less than the preset transition threshold is less than the preset number, and if the display state of the previous frame is static mode, the current frame can switch to dynamic mode for normal refresh, but will not decrease the grayscale value of the grayscale transition pixels or increase the grayscale value of the compensation pixels. If the display state of the previous frame is dynamic mode, the current frame maintains dynamic mode and performs normal refresh in dynamic mode, without decreasing the grayscale value of the grayscale transition pixels or increasing the grayscale value of the compensation pixels, until at least a preset number of pixels in the current frame have a grayscale difference greater than or equal to the preset transition threshold, then the current frame is determined to be a dynamic frame. In this case, grayscale transition pixels and compensation pixels can be identified in the dynamic frame, and corresponding grayscale processing can be performed on the grayscale transition pixels and compensation pixels.

[0087] For example, based on the grayscale value of each pixel in the current frame and the grayscale value in the previous frame, the absolute value of the difference between the grayscale values ​​of each pixel in the current frame and the previous frame is calculated to obtain the grayscale difference value of each pixel. If the grayscale difference value of each pixel is less than a preset jump threshold, the display device is determined to be in static mode, that is, the display state of the current frame of the display device is static mode, and the number of consecutive static modes of the display device is accumulated. For example, each time a static mode is determined, the static count is incremented by 1. If the number of static modes of the display device is greater than or equal to the preset number, the current frame is determined to be a static image. If there is a pixel in the current frame whose grayscale difference value is greater than or equal to the preset jump threshold, the current frame is determined to be a dynamic image.

[0088] This embodiment uses grayscale difference and preset transition threshold to determine static and dynamic images, thereby improving the accuracy of image determination. This facilitates subsequent control of static and dynamic images, helps improve display quality, and reduces power consumption.

[0089] In a feasible embodiment, step S20 further includes steps S21 to S22:

[0090] Step S21: In the current frame, identify the target pixel whose grayscale difference is less than the preset jump threshold;

[0091] Step S22: For each target pixel, if the grayscale difference of the target pixel is greater than the preset static threshold, and there are grayscale jump pixels from the first column pixel of the pixel row where the target pixel is located to the target pixel, the target pixel is determined to be a compensation pixel.

[0092] It should be noted that when the current frame is determined to be a dynamic scene, pixels in the dynamic scene whose grayscale difference is greater than or equal to the preset transition threshold can be directly used as grayscale transition pixels. Multiple grayscale transition pixels can exist in a dynamic scene. In a dynamic scene, the grayscale difference of the compensation pixel is less than the preset transition threshold.

[0093] In a dynamic scene, there may be multiple pixels with a grayscale difference less than a preset transition threshold. That is, there may be multiple target pixels, but not all target pixels are necessarily compensation pixels. In this embodiment, each pixel row in the display device shares a source line. Therefore, if there are grayscale transition pixels in a pixel row, there may be compensation pixels in that pixel row. If there are no grayscale transition pixels in a pixel row, there will be no compensation pixels in that pixel row.

[0094] The preset static threshold can be 0. When the grayscale difference of the target pixel equals the preset static threshold, it means the grayscale difference of the target pixel is 0. This indicates that the target pixel with a grayscale difference of 0 has the same grayscale value in the previous frame and the current frame. Therefore, the target pixel does not need to be refreshed or its driving voltage needs to be readjusted. Thus, the target pixel with a grayscale difference of the preset static threshold will not be affected by pixels with grayscale jumps; for example, it will not experience a voltage drop due to pixels with grayscale jumps. Therefore, the target pixel with a grayscale difference of the preset static threshold does not need to be used as a compensation pixel.

[0095] When there are grayscale abrupt pixels between the first column of the pixel row containing the target pixel and the target pixel, it indicates that there are grayscale abrupt pixels in the target pixel row. For example, the first column of pixels might be a grayscale abrupt pixel, or there might be grayscale abrupt pixels between the first column of pixels and the target pixel. The target pixel will experience a voltage drop due to the grayscale abrupt pixels. If the first column of pixels in any pixel row is a grayscale abrupt pixel, then all target pixels in that pixel row with a grayscale difference greater than a preset static threshold are compensation pixels.

[0096] If the grayscale difference of the target pixel is greater than the preset static threshold, and there are no grayscale jump pixels between the first column pixel of the pixel row where the target pixel is located and the target pixel, the target pixel can be excluded as a compensation pixel. This is because the target pixel is arranged before the grayscale jump pixels, and the source line passes through the target pixel first and then the grayscale jump pixels. Therefore, the target pixel is less affected by the grayscale jump pixels, and the voltage drop generated by the target pixel can be ignored. This avoids unnecessary grayscale increases, helps reduce power consumption, and facilitates more effective improvement of the grayscale value of the compensation pixel.

[0097] For example, in the current frame, target pixels with grayscale differences less than a preset transition threshold are identified. For each target pixel, if the grayscale difference of the target pixel is greater than a preset static threshold, and there are grayscale transition pixels within a preset row region of the target pixel, the target pixel is determined to be a compensation pixel. The preset row region is the region from the first column of pixels in the pixel row where the target pixel is located to the target pixel, and the preset row region includes the first column of pixels.

[0098] To better understand this embodiment, please refer to Figure 2The process for determining static and dynamic images is briefly explained, including steps Y10 to Y90. Step Y10: Read the pixel data from the previous frame and the pixel data from the current frame; Step Y20: Determine if the grayscale difference of each pixel is less than a preset transition threshold; If the grayscale difference of each pixel is less than the preset transition threshold, then execute step Y30: Increment the static count by 1; Step Y40: Determine if the static count is greater than or equal to a preset count; If the static count is greater than or equal to the preset count, then execute step Y50: Output a low level to turn off the MOS transistor to stop refreshing; Outputting a low level turns off the MOS transistor corresponding to the pixel, thus stopping the pixel refresh; If the static count is less than the preset count, then execute step Y90: Return to read the pixel data of the next frame, return to step Y20, and continue to determine the grayscale difference of the next frame. If the grayscale difference of a pixel is greater than or equal to the preset jump threshold, then execute step Y60: reset the static count to 0, step Y70: turn on the MOS transistor to start refresh; a high-level signal can be output to the MOS transistor corresponding to the pixel to start refresh; step Y80: reduce the grayscale value of the grayscale jump pixel, increase the grayscale value of the compensation pixel, and then execute step Y90.

[0099] In a feasible embodiment, step S30 further includes steps S31 to S33:

[0100] Step S31: For each pixel row in the display device that has a grayscale jump pixel, calculate the total voltage jump variable of the pixel row based on the voltage difference corresponding to the grayscale difference of each grayscale jump pixel in the pixel row, and normalize the total voltage jump variable according to the preset voltage jump upper limit to obtain the voltage jump degree of the pixel row.

[0101] It should be noted that for pixel rows without any grayscale transition pixels, there will be no compensation pixels. Therefore, the total voltage transition variable for pixel rows without grayscale transition pixels does not need to be calculated. Different grayscale differences correspond to different voltage differences, and the voltage difference corresponding to each grayscale difference can be found in the mapping relationship between preset grayscale differences and preset voltage differences. The total voltage transition variable for a pixel row is the sum of the voltage differences of all grayscale transition pixels in that pixel row.

[0102] The preset voltage jump limit is the maximum voltage jump threshold in the display device. By normalizing the total voltage jump by setting the preset voltage jump limit, the voltage jump level of each pixel row can be obtained, thus enabling a unified quantification standard. The voltage jump variable reflects the severity of voltage jumps in a pixel row; the larger the voltage jump variable, the more severe the voltage jump.

[0103] Step S32: For each grayscale jump pixel, based on the voltage jump degree of the pixel row where the grayscale jump pixel is located, the preset voltage reduction coefficient, and the original grayscale value of the grayscale jump pixel in the current frame, determine the target grayscale reduction value of the grayscale jump pixel, and reduce the original grayscale value of the grayscale jump pixel to the target grayscale reduction value, so as to reduce the grayscale value of the grayscale jump pixel.

[0104] It should be noted that the target grayscale reduction value is the target value to which the grayscale of the grayscale-jumping pixel needs to be reduced. The grayscale value of the grayscale-jumping pixel can be reduced based on the target grayscale reduction value. For example, the grayscale value of the grayscale-jumping pixel can be reduced based on the target reduction voltage corresponding to the target grayscale reduction value, where the target reduction voltage is the target value to which the voltage of the grayscale-jumping pixel needs to be reduced. The target reduction voltage corresponding to the target grayscale reduction value can be found in the mapping relationship between preset grayscale values ​​and preset voltages. The mapping relationship between preset grayscale values ​​and preset voltages can be determined based on actual conditions, and this embodiment does not impose specific limitations on it. The preset voltage reduction factor can also be determined based on actual conditions. The preset voltage reduction factor is used to control the magnitude of grayscale reduction. However, it may cause a visible loss of detail, contrast, or brightness in the area formed by the grayscale-jumping pixels (because the grayscale is over-compressed). The smaller the preset voltage reduction factor, the higher the fidelity of the image quality, but the weaker the suppression effect, and it may not be able to completely eliminate horizontal crosstalk. In this embodiment, a voltage reduction weight coefficient can be generated by preseting the voltage reduction coefficient and the voltage hop degree of the pixel row containing the grayscale jump pixel. Different pixel rows have different voltage hop degrees, resulting in different voltage reduction weight coefficients. Therefore, in this embodiment, the voltage reduction weight coefficient can be dynamically adjusted according to the voltage hop degree of each pixel row to improve the accuracy of grayscale value adjustment for grayscale jump pixels. For example, when the voltage hop degree is very small, the voltage reduction weight coefficient is closer to 0, meaning that the grayscale value of the grayscale jump pixel is hardly reduced, thus preserving image quality to the maximum extent. When the voltage hop degree is large, the voltage reduction weight coefficient is closer to the preset voltage reduction coefficient, meaning that a larger degree of grayscale adjustment is needed for the grayscale jump pixel to strongly eliminate crosstalk. This facilitates adaptive compensation based on the actual situation of the image, thereby improving display quality.

[0105] For example, for each grayscale transition pixel, the formula for determining the target grayscale reduction value of the grayscale transition pixel can be found in Formula 1:

[0106] (Formula 1);

[0107] in, To reduce the grayscale value of the target, This represents the original grayscale value of the pixel that transitioned to a grayscale level. The preset pressure drop factor, The degree of voltage hopping in the pixel row where the grayscale transition pixel is located. This represents the total voltage jump variable of the pixel row containing the pixel that undergoes a grayscale jump. This is the preset voltage jump limit. This is the pressure reduction weighting coefficient. For example: assuming... =0.3, =205mV, When the value is 300mV, the target grayscale reduction value of the grayscale jump pixel should be: 230×(1-0.3×205 / 300)=230×0.795≈183.

[0108] This embodiment reduces the grayscale of pixels with grayscale jumps, thereby facilitating the reduction of horizontal crosstalk and power consumption.

[0109] Step S33: For each compensated pixel, based on the voltage jump level of the pixel row where the compensated pixel is located, the preset boost coefficient, and the original grayscale value of the compensated pixel in the current frame, determine the target enhanced grayscale value of the compensated pixel, and increase the original grayscale value of the compensated pixel to the target enhanced grayscale value, so as to improve the grayscale value of the compensated pixel.

[0110] It should be noted that the target grayscale value to be increased is the target value to which the grayscale of the compensation pixel needs to be raised. The grayscale value of the compensation pixel can be increased based on the target grayscale value. For example, the grayscale value of the compensation pixel can be increased based on the target boost voltage corresponding to the target grayscale value, where the target boost voltage is the target value to which the voltage of the compensation pixel needs to be raised. The target boost voltage corresponding to the target grayscale value can be found in the mapping relationship between preset grayscale values ​​and preset voltages. The preset boost coefficient can also be determined based on actual conditions, and it is used to control the magnitude of the grayscale increase. In this embodiment, a boost weight coefficient can be generated by using the preset boost coefficient and the voltage jump degree of the pixel row where the compensation pixel is located. Different pixel rows have different voltage jump degrees, and therefore different boost weight coefficients. Thus, in this embodiment, the boost weight coefficient can be dynamically adjusted based on the voltage jump degree of each pixel row to improve the accuracy of the grayscale value adjustment of the compensation pixel. This facilitates adaptive compensation based on the actual situation of the image, thereby improving display quality. In this embodiment, for each pixel row with grayscale transition pixels, multiple consecutive grayscale transition pixels can form a transition area, multiple consecutive compensation pixels can form a compensation area, a single grayscale transition pixel can also be used as a transition area, and a single compensation pixel can also be used as a compensation area.

[0111] For example, for each compensated pixel, the formula for determining the target increased grayscale value of the compensated pixel can be found in Formula 2:

[0112] (Formula 2);

[0113] in, To compensate for the target pixel's increased grayscale value, To compensate for the original grayscale value of the pixel, the original grayscale value of the compensated pixel is the grayscale value before grayscale adjustment of the compensated pixel. The preset boost coefficient, The total voltage jump variable of the pixel row where the compensation coefficient is located. To compensate for the voltage jump level of the pixel row where the coefficient is located. This is the boost weighting coefficient. For example: assuming... =0.2, =205mV, When the value is 300mV, the target grayscale value of the compensated pixel should be: 128×(1+0.2×205 / 300)=128×1.136≈145.

[0114] This embodiment improves the grayscale of the compensation pixels, thereby reducing horizontal crosstalk and improving display quality.

[0115] To better understand this embodiment, please refer to Tables 1 and 2. Taking the pixels in columns 1 to 6 of the m-th pixel row in a dynamic image as an example, the grayscale transition pixels and compensation pixels are briefly explained:

[0116] Table 1:

[0117]

[0118] In this table, frame N is the current frame, frame N-1 is the previous frame, and columns 1 to 6 represent the columns where the pixels are located. Table 1 uses the pixels in columns 1 to 6 of row m as an example for illustration. Table 1 shows the grayscale values ​​of columns 1 to 6 in row m of frame N-1 and the grayscale values ​​of columns 1 to 6 in row m of frame N. For ease of explanation, area labels are also given in Table 1. Pixels in area A are grayscale transition pixels, pixels in area B are compensation pixels, and pixels in area C are normal pixels. Normal pixels represent pixels that are neither grayscale transition pixels nor compensation pixels. As can be seen from the grayscale values ​​shown in Table 1, the grayscale differences of pixels in areas C and B are relatively small, while the grayscale differences of pixels in area A are relatively large, exceeding the preset transition threshold. Therefore, the pixels in area A are grayscale transition pixels. There are pixels with a grayscale transition between region C and region B, so the pixels in region B are compensation pixels. Region C has no pixels with a grayscale transition, and there are no pixels with a grayscale transition before region C, so region C is not considered a compensation pixel. For example, you can also refer to Table 2:

[0119] Table 2:

[0120]

[0121] In this system, region A can be a transition zone, where all pixels exhibit grayscale transitions. Region B can be a compensation zone, where all pixels exhibit compensation. Region C can be a normal zone, where pixels exhibit neither compensation nor grayscale transitions. ΔV represents the grayscale difference of a pixel, and P is a preset transition threshold. The grayscale difference of each pixel in columns 3 to 5 is greater than or equal to the preset transition threshold; the grayscale difference of column 6 is less than the preset transition threshold, and column 6 experiences a voltage drop due to the transition zone. The grayscale difference of each pixel in the normal zone is less than the preset transition threshold, and there is no voltage drop due to the transition zone, or the voltage drop is negligible. For pixels in the transition zone, the processing strategy can be to reduce the grayscale, i.e., reduce the grayscale value of each pixel in the transition zone. For pixels in the compensation zone, the processing strategy can be to increase the grayscale, i.e., increase the grayscale value of each pixel in the compensation zone. For pixels in the normal zone, the processing strategy can be to maintain the original grayscale, i.e., maintain the original grayscale value of each pixel in the normal zone. This embodiment reduces the grayscale of the transition area and increases the grayscale of the compensation area, thereby stabilizing the display voltage of the entire row and the display voltage of the entire display device. This improves display quality and avoids unnecessary power consumption.

[0122] Furthermore, you can refer to Figure 3 , Figure 3 The diagrams show the same pixel row in frames N and N-1, with columns 1 to 11 representing the first to eleventh columns of pixels in the same pixel row. Figure 3 It can be seen that the pixels in the transition area have a larger color difference between the N-1th frame and the Nth frame, while the normal area and the compensation area have almost no color difference.

[0123] Furthermore, in another feasible embodiment, reference can be made to Figure 4 Each pixel electrode in the display device is connected to a storage capacitor, a coupling capacitor, and a liquid crystal capacitor. After step S30, the control method of the display device may further include steps A10 to A30:

[0124] Step A10: For each pixel in the display device, obtain the pixel's compensation voltage based on the pixel's current grayscale value;

[0125] Step A20: Determine the voltage compensation range of the pixel based on the compensation voltage, storage capacitor, coupling capacitor, and liquid crystal capacitor.

[0126] It should be noted that when the data voltage is written to the pixel electrode, due to the charge-sharing effect and leakage current of the capacitors connected to the pixel (including storage capacitors and liquid crystal capacitors), the actual voltage of the pixel will be lower than the writing voltage (for example, writing +4V, but only 3.5V in reality). This voltage loss will cause insufficient deflection of liquid crystal molecules, affecting the display effect (such as reduced brightness). Therefore, after step S30, it is necessary to compensate the pixels in the display device. For each pixel in the display device, the current grayscale value of the pixel is the grayscale value that the pixel needs to reach at the current moment. For example, when the pixel is a grayscale jump pixel, the current grayscale value is the target grayscale reduction value of the grayscale jump pixel, and the data voltage written to the pixel is the target reduction voltage corresponding to the target grayscale reduction value. When the pixel is a compensation pixel, the current grayscale value is the target increase grayscale value of the compensation pixel, and the data voltage written to the pixel is the target increase voltage corresponding to the target increase grayscale value. When the pixel is a normal pixel, the current grayscale value is the original grayscale value of the normal pixel, and the data voltage written to the pixel is the original voltage corresponding to the original grayscale value.

[0127] Reference Figure 4 , Figure 4 The diagram illustrates the pixel circuitry corresponding to each pixel. Each pixel comprises two pixel circuits, forming a symmetrical dual-pixel circuit. This symmetrical circuitry enhances charging efficiency and improves display performance through capacitive coupling. Each pixel integrates two sets of symmetrical and independent pixel circuits. Each set of pixel circuits includes: a pixel electrode, a liquid crystal capacitor, a storage capacitor, a coupling capacitor, and a first transistor. For example, Figure 4 The image shows two pixel circuits, a first pixel circuit and a second pixel circuit. Cs1 is the storage capacitor of the first pixel circuit, Cs2 is the coupling capacitor of the first pixel circuit, and Clc is the liquid crystal capacitor of the first pixel circuit. The first terminal of the storage capacitor Cs1 is connected to the pixel electrode of the first pixel circuit, and the second terminal of the storage capacitor Cs1 is connected to the bias voltage source VST. The first terminal of the coupling capacitor Cs2 is also connected to the pixel electrode of the first pixel circuit. The pixel electrode of the first pixel circuit is not... Figure 4 The diagram shows: Cs1' is the storage capacitor of the second pixel circuit, Cs2' is the coupling capacitor of the second pixel circuit, and Clc' is the liquid crystal capacitor of the second pixel circuit. The first terminal of the storage capacitor Cs1' is connected to the pixel electrode of the second pixel circuit, and the second terminal of the storage capacitor Cs1' is connected to the bias voltage source VST'. The first terminal of the coupling capacitor Cs2' is also connected to the pixel electrode of the second pixel circuit. The pixel electrode of the second pixel circuit is not... Figure 4 It is marked in the middle. Figure 4In this diagram, "Data" refers to the data line, which is shared by both pixel circuits and used for writing data voltage. "Gate" refers to the gate line, also shared by both pixel circuits, controlling the on / off state of the first transistor in the first pixel circuit and the second transistor in the second pixel circuit for data writing. "VCOM" is the common electrode, providing a voltage reference for the liquid crystal capacitors (Clc, Clc') in both pixel circuits. "VST" is the bias voltage, and "VST'" is also a bias voltage. "VST" provides a stable voltage reference for the storage capacitor Cs1 in the first pixel circuit, and "VST'" provides a stable voltage reference for Cs1'. "VST" and "VST'" are the same fixed voltage (e.g., DC voltage).

[0128] In this embodiment, the storage capacitor mentioned in step A20 can be the storage capacitor in the first pixel circuit or the storage capacitor in the second pixel circuit. The coupling capacitor mentioned in step A20 can be the coupling capacitor in the first pixel circuit or the coupling capacitor in the second pixel circuit. The liquid crystal capacitor mentioned in step A20 can be the liquid crystal capacitor in the first pixel circuit or the liquid crystal capacitor in the second pixel circuit.

[0129] Different grayscale values ​​correspond to different compensation voltages. The compensation voltage is the amount of voltage required to achieve the desired grayscale value for a pixel. The compensation voltage corresponding to the current grayscale value can be found in the mapping relationship between preset grayscale values ​​and preset compensation voltages. This mapping relationship can be determined based on actual conditions, and this embodiment does not impose specific limitations on it. The voltage compensation amplitude represents the amount of jump variable needed to compensate for the pixel's voltage.

[0130] For example, the formula for determining the voltage compensation amplitude can be found in Formula 3:

[0131] (Formula 3);

[0132] in, To compensate for voltage, For voltage compensation amplitude, The coupling capacitor in Formula 3 can be either the coupling capacitor in the first pixel circuit or the coupling capacitor in the second pixel circuit. The total parasitic capacitance of a pixel includes storage capacitance and liquid crystal capacitance. After obtaining the compensation voltage of the pixel, the voltage compensation amplitude can be deduced using Formula 3. The storage capacitance in the total parasitic capacitance is either the storage capacitance in the first pixel circuit or the storage capacitance in the second pixel circuit, and the liquid crystal capacitance in the total parasitic capacitance is either the liquid crystal capacitance in the first pixel circuit or the liquid crystal capacitance in the second pixel circuit.

[0133] Step A30: Determine the voltage transition direction of the pixel, and apply a transition signal generated by the voltage transition direction and voltage compensation amplitude to the coupling capacitor to perform voltage compensation on the pixel.

[0134] It should be noted that the voltage transition direction can be divided into positive compensation and negative compensation. The transition signal is generated based on the voltage transition direction and the voltage compensation amplitude. Applying the transition signal to the coupling capacitor allows for voltage compensation of the pixel through capacitive coupling. In this embodiment, the coupling capacitor can be any coupling capacitor in the first pixel circuit or the second pixel circuit. This embodiment is performed after step S30, which further corrects the pixel voltage, improves display uniformity, and reduces power consumption. Furthermore, since this embodiment is executed after the data voltage is written, it facilitates improved accuracy of pixel voltage compensation.

[0135] For example, a voltage-jumping pixel can be determined by the polarity of the current frame or the parity of the pixel column. A jump signal is then applied to the coupling capacitor, which can then be coupled to the pixel electrode to compensate for the pixel's voltage. This can further correct the capacitor voltage and improve display uniformity. For instance, a jump signal can be applied to each coupling capacitor in the pixel.

[0136] In one feasible embodiment, please refer to Figure 5 The coupling capacitor connects to the compensation signal line. Step A30 also includes steps A31 to A32:

[0137] Step A31: Detect the polarity of the current frame and determine the voltage transition direction of the pixel based on the polarity of the current frame. When the current frame is a positive polarity frame, the voltage transition direction is positive compensation, and when the current frame is a negative polarity frame, the voltage transition direction is negative compensation.

[0138] In step A32, the switching signal is applied to the coupling capacitor through the compensation signal line.

[0139] It should be noted that the coupling capacitor in this embodiment can be the coupling capacitor in the first pixel circuit, or it can be the coupling capacitor in the second pixel circuit. When the coupling capacitor is independently connected to the compensation signal line, the voltage transition direction of the pixel can be determined according to the polarity of the current frame. For example, when the current frame is a positive polarity frame, the voltage transition direction is positive compensation, and when the current frame is a negative polarity frame, the voltage transition direction is negative compensation. Positive compensation means that the voltage jumps from negative voltage to positive voltage, and negative compensation means that the voltage jumps from positive voltage to negative voltage. The compensation signal line can be Vcouple, and a transition signal can be applied to the coupling capacitor by applying a transition signal to Vcouple. The voltage compensation amplitude may be different for different pixels, and this embodiment does not specifically limit this.

[0140] Reference Figure 5 , Figure 5 The diagram illustrates a circuit where coupling capacitors connect to compensation signal lines. Each coupling capacitor in the two pixel circuits corresponding to a pixel is connected to a compensation signal line. Figure 5 The diagram shows the compensation signal line Vcouple connected to the coupling capacitor Cs2 of the first pixel circuit, and also shows the compensation signal line Vcouple' of the coupling capacitor Cs2' of the second pixel circuit. That is, in Figure 5 Vcouple and Vcouple' are two independent compensation signal lines. Vcouple and Vcouple' receive a set of synchronous and in-phase (same voltage transition direction) transition signals. Vcouple is connected to the coupling capacitor in the first pixel circuit, and Vcouple' is connected to the coupling capacitor in the second pixel circuit. When the gate is turned on and the data voltage is written, the Vcouple and Vcouple' signal lines apply a transition signal synchronized with the gate signal. This transition signal is efficiently coupled to the two pixel electrodes through Cs2 and Cs2', respectively, causing the final voltage value of the pixel electrodes to exceed the original data voltage that the source driver IC can provide, thereby achieving an overdrive effect and shortening the response time of the liquid crystal molecules.

[0141] For example, you can refer to Figure 6 , Figure 6 The timing diagrams for the data lines and compensation signal lines are given. For example, "Data" refers to the data line signal, and "Vcouple" refers to the timing diagram of the compensation signal line. Figure 6 As can be seen, Vcouple can compensate for the signal on the data line. For example, when the current frame is a positive polarity frame (Data=+4V), Vcouple switches from negative to positive (-1.5V→+1.5V), generating positive compensation. When the current frame is a negative polarity frame (Data=-4V), Vcouple switches from positive to negative (+1.5V→-1.5V), generating negative compensation (<0), ensuring symmetry. For example, refer to... Figure 7 , Figure 7 A simplified flowchart of pixel voltage compensation is provided. Step X1: Detect polarity. For example, the polarity of the current frame can be detected by detecting the polarity of the data voltage written to the pixel. The polarity of the current frame is the same as the polarity of the data voltage written to the pixel. Step X2: Determine polarity. If the polarity is positive, proceed to step X3: Vcouple changes from negative to positive, generating positive compensation. If the polarity is negative, proceed to step X4: Vcouple changes from positive to negative, generating negative compensation. This facilitates the improvement of display quality of the display device.

[0142] In another feasible embodiment, please refer to Figure 8In the display device, the coupling capacitors of pixels in even-numbered columns are sequentially connected to the even-numbered common electrode and the odd-numbered common electrode, and the coupling capacitors of pixels in odd-numbered columns are sequentially connected to the odd-numbered common electrode and the even-numbered common electrode; step A30 may also include steps B10 to B30:

[0143] Step B10: Determine the voltage transition direction of the pixel based on the pixel column it belongs to; wherein, when the pixel column is an odd number, the voltage transition direction of the pixel is positive compensation, and when the pixel column is an even number, the voltage transition direction of the pixel is negative compensation.

[0144] It should be noted that the even-numbered common electrode is Com_even, and the odd-numbered common electrode is Com_odd. The even-numbered and odd-numbered common electrodes are derived from the common electrode VCOM. Therefore, in this embodiment, no additional independent traces are needed, reducing circuit complexity and cost. For pixels in odd-numbered columns, the coupling capacitors in each pixel circuit (each pixel includes two pixel circuits, namely the first pixel circuit and the second pixel circuit) are sequentially connected to the even-numbered and odd-numbered common electrodes. For pixels in even-numbered columns, the coupling capacitors in each pixel circuit are sequentially connected to the odd-numbered and even-numbered common electrodes. The specific connection relationships can be found in [reference needed]. Figure 8 This embodiment will not elaborate further. In this embodiment, the polarities of adjacent columns are opposite, which can prevent liquid crystal molecules from aging and failing due to long-term exposure to a unidirectional electric field.

[0145] Step B20: When the pixel is located in an even column, apply a reverse transition signal to the even-numbered common electrode, and restore the reverse transition signal through the odd-numbered common electrode to apply a transition signal to the coupling capacitance of the pixel.

[0146] In step B30, when the pixel is located in an odd column, a reverse transition signal is applied to the odd-numbered common electrode, and the reverse transition signal is restored through the even-numbered common electrode to apply a transition signal to the coupling capacitance of the pixel.

[0147] It should be noted that when compensating for the voltage of a pixel, the voltage transition direction of the even-numbered common electrode is opposite to that of the odd-numbered common electrode. For example, when the voltage transition direction of the even-numbered common electrode is positive compensation, the odd-numbered common electrode is negative compensation, and when the voltage transition direction of the even-numbered common electrode is negative compensation, the odd-numbered common electrode is positive compensation.

[0148] Therefore, when pixels are located in even-numbered columns, since each coupling capacitor in the pixel is connected sequentially to the even-numbered and odd-numbered common electrodes, the signal applied to the odd-numbered common electrodes is the inverse transition signal corresponding to the pixel, and the signal applied to the even-numbered common electrodes is the transition signal, thus enabling negative compensation for pixels in even-numbered columns. Similarly, when pixels are located in odd-numbered columns, since each coupling capacitor in the pixel is connected sequentially to the odd-numbered and even-numbered common electrodes, the signal applied to the even-numbered common electrodes is the inverse transition signal corresponding to the pixel, and the signal applied to the odd-numbered common electrodes is the transition signal, thus enabling negative compensation for pixels in even-numbered columns. Furthermore, voltage compensation for pixels can also be achieved through the even-numbered and odd-numbered common electrodes to improve display quality.

[0149] Reference Figure 8 , Figure 8 The circuit diagrams show the coupling capacitors in each pixel circuit corresponding to odd-numbered columns of pixels connected in sequence to the even-numbered and odd-numbered common electrodes, and the circuit diagrams show the coupling capacitors in each pixel circuit corresponding to even-numbered columns of pixels connected in sequence to the odd-numbered and even-numbered common electrodes.

[0150] To better understand this embodiment, please refer to Table 3 for a comparative explanation of the architecture of the two implementation methods for applying a switching signal to the coupling capacitor: The first implementation method for applying a switching signal to the coupling capacitor can refer to steps A31 to A32, and refer to... Figure 5 The circuit diagram referred to, and the second implementation of applying a switching signal to the coupling capacitor, can be referred to steps B10 to B30, and also to... Figure 8 The circuit diagram it refers to.

[0151] Table 3:

[0152]

[0153] In this document, Architecture 1 corresponds to the first implementation scheme, and Architecture 2 corresponds to the second implementation scheme. The signal source refers to the source from which the switching signal is applied to the coupling capacitor. In Architecture 1, the signal is applied to the coupling capacitor in the first pixel circuit via Vcouple. Additionally, in Architecture 1, Vcouple' is also applied to the coupling capacitor in the second pixel circuit (not specified in Table 3). In Architecture 2, the signal is applied to the coupling capacitor via the even-numbered common electrode Com_odd and the odd-numbered common electrode Com_even. For example, each coupling capacitor in the pixel is applied via the even-numbered common electrode Com_odd and the odd-numbered common electrode Com_even. From a routing perspective, Architecture 1 requires an additional metal layer trace, which corresponds to the compensation signal line Vcouple. Architecture 2 does not require an additional trace; voltage compensation can be achieved directly using the existing common electrodes in the pixel. The "shared existing common electrode driving" mentioned in Table 3 refers to voltage compensation performed by using the pixel's corresponding existing even-numbered and odd-numbered common electrodes.

[0154] Furthermore, Table 4 can be used to compare and explain the two implementation methods of applying a switching signal to the coupling capacitor.

[0155] Table 4:

[0156]

[0157] In Table 4, Method 1 is the first implementation of applying a switching signal to the coupling capacitor, and Method 2 is the second implementation of applying a switching signal to the coupling capacitor. In Method 1, the coupling capacitor is directly connected to Vcouple; for example, the coupling capacitor in the first pixel circuit is directly connected to Vcouple, and the coupling capacitor in the second pixel circuit is directly connected to Vcouple'. In Method 2, each coupling capacitor in a pixel is connected to Com_even or Com_odd. Specifically, each coupling capacitor in the odd-numbered columns is connected to Com_even, and each coupling capacitor in the even-numbered columns is connected to Com_odd. The switching control in Method 1 is implemented through Vcouple. A voltage switching signal can be generated by an independent timing controller and applied to the coupling capacitor in the first pixel circuit through Vcouple, and to the coupling capacitor in the second pixel circuit through Vcouple'. The transition control in Method 2 can be a time-division multiplexing transition. Time-division multiplexing means that Com_odd and Com_even do not transition simultaneously at the same time, but rather have a very short, staggered timing sequence. Inverse transition means that the transition signal for Com_even in odd-numbered columns is opposite, and the transition signal for Com_odd in even-numbered columns is opposite. The potential reference refers to the potential reference of the compensation voltage. In Method 1, the potential reference is the VCOM voltage, i.e., the common electrode. In Method 2, it is based on the common electrode of adjacent columns. For example, the potential reference for pixels in odd-numbered columns is Com_even in even-numbered columns, and the potential reference for pixels in even-numbered columns is Com_odd in odd-numbered columns.

[0158] To better understand this embodiment, please refer to Figure 9 The overall process of this embodiment is briefly described, including steps Z10 to Z27: Step Z10: Frame data comparison; Frame data comparison refers to comparing the pixel data of the current frame with the pixel data of the previous frame. If three consecutive frames are the same, it can be determined that step Z11: the current frame is a static image, and step Z12: stop refreshing or reduce the refresh rate. If the pixel data of the current frame is different from that of the previous frame, it is determined that step Z21: the current frame is a dynamic image, and step Z22: determine the grayscale jump pixel and the compensation pixel; step Z23: reduce the grayscale value of the compensation pixel and increase the grayscale value of the compensation pixel; step Z24: perform voltage compensation on the pixel through the first implementation method or the second implementation method; the first implementation method is step Z25: realize voltage compensation through an independent compensation signal line, that is, the first implementation method corresponds to steps A31 to A32. The second implementation method is step Z26: realize voltage compensation through dual common electrodes, and the specific implementation of step Z26 corresponds to steps B10 to B30. The dual common electrodes are the even-numbered common electrodes and the odd-numbered common electrodes in this embodiment.

[0159] Furthermore, based on the above embodiments of this application, in another embodiment of this application, the same or similar content as the above embodiments can be referred to the above description, and will not be repeated hereafter. Based on this, refer to... Figure 10 This embodiment provides a display device, including a main control module 100, a timing controller 200, a source driver 300, and a display panel 400. The main control module 100 is connected to the timing controller 200, the timing controller 200 is connected to the source driver 300, and the source driver 300 is connected to the display panel 400.

[0160] The main control module 100 is used to identify the screen state of the current frame displayed on the display panel 400. It is also used to identify gray-level transition pixels in the current frame whose gray-level difference is greater than or equal to a preset transition threshold, based on the gray-level difference of each pixel in the current frame determined by the current frame and the previous frame, and to identify compensation pixels whose gray-level difference is less than the preset transition threshold and whose voltage drop is caused by the gray-level transition pixels.

[0161] The timing controller 200 is used to determine the target grayscale value reduction of the grayscale jump pixel and the target grayscale value increase of the compensation pixel. It is also used to control the display panel 400 to stop refreshing or reduce the refresh rate when the screen state identified by the main control module 100 is a static screen.

[0162] The source driver 300 is used to drive grayscale jump pixel display based on target grayscale value reduction, and also to drive compensation pixel display based on target grayscale value enhancement.

[0163] It should be noted that the main control module 100 can be a System-on-a-Chip (SOC). The SOC can cache the pixel data of the previous frame and send the pixel data of the current frame to the timing controller 200. The SOC can identify the screen state of the display panel 400 in the current frame based on the pixel data of the previous frame and the pixel data of the current frame. The screen state can be divided into static screen and dynamic screen. When the SOC sends pixel data to the timing controller 200, it also sends screen control commands. The screen control commands are determined based on the screen state. For example, when the screen state is static, the screen control command instructs the timing controller 200 to stop the display panel 400 from refreshing or reduce the refresh rate. When the screen state is dynamic, the screen control command instructs the timing controller 200 to continue refreshing the display panel 400 according to the preset refresh rate. The preset refresh rate is the normal refresh rate of the display panel 400 that is set in advance. It can be set according to the actual situation. This embodiment does not make specific limitations on this.

[0164] The main control module 100 can also identify grayscale transition pixels and compensation pixels when the current frame is detected as a dynamic image. The timing controller 200 can receive the grayscale transition pixels and compensation pixels identified by the main control module 100. The timing controller 200 can determine the target grayscale value to be increased for the compensation pixels. For example, the timing controller 200 can determine the target grayscale value to be increased for the compensation pixels based on the voltage transition degree of the pixel row where the compensation pixel is located, the preset boost coefficient, and the original grayscale value of the compensation pixel in the current frame, and increase the original grayscale value of the compensation pixel to the target grayscale value to improve the grayscale value of the compensation pixels.

[0165] The timing controller 200 can also determine the target reduction grayscale value of the grayscale jump pixel. For example, the timing controller 200 can determine the target reduction grayscale value of the grayscale jump pixel based on the voltage jump degree of the pixel row where the grayscale jump pixel is located, the preset voltage reduction coefficient, and the original grayscale value of the grayscale jump pixel in the current frame.

[0166] The timing controller 200 can also control the display panel 400 to stop refreshing or reduce the refresh rate when the main control module 100 detects that the screen state is a static screen. Specifically, the display device also includes a gate driver. The timing controller 200 is connected to the gate driver, and the gate driver is connected to the gate line in the display panel 400. The same gate line connects to pixels in the same pixel row. Different gate lines connect to different pixel rows. The timing controller 200 can control the display panel 400 to stop refreshing or reduce the refresh rate through the gate driver. For example, the timing controller 200 can turn off the MOS transistors of the pixel row through the gate driver, making the OE (Output Enable) signal invalid, thereby controlling the display panel 400 to stop refreshing. The timing controller 200 can also turn on the MOS transistors of each pixel row through the gate driver, making the OE signal valid, but reducing the refresh rate. For example, the timing controller 200 can control the frequency of the timing signal output by the gate driver to reduce the refresh rate.

[0167] The source driver is connected to the display panel 400. Specifically, the source driver can be connected to the data line Data in the display panel 400. The source driver can apply the target grayscale value down to the grayscale jump pixel and apply the target grayscale value up to the compensation pixel.

[0168] This embodiment can control the display panel 400 to stop refreshing or reduce the refresh rate when it detects that the current frame displayed on the display panel 400 is a static image, thereby reducing power consumption in high refresh rate scenarios. When it detects that the current frame is a dynamic image, it will identify grayscale transition pixels in the current frame whose grayscale difference is greater than or equal to a preset transition threshold. This will identify pixels with a high degree of grayscale transition, so that the grayscale value of the grayscale transition pixels can be reduced in the future, thereby reducing power consumption and further mitigating horizontal crosstalk caused by grayscale transition pixels. Horizontal crosstalk exists because the transition value of grayscale transition pixels is high, and some pixels in the display device (such as compensation pixels) will be affected by the grayscale transition pixels and generate voltage drop, which will cause the grayscale value displayed by the compensation pixels to not reach the target value, thus generating horizontal crosstalk and reducing the display quality of the display device. This application determines the grayscale jump pixels and compensation pixels of the current frame, reduces the grayscale value of the grayscale jump pixels, and increases the grayscale value of the compensation pixels. This reduces the jump rate of the grayscale jump pixels and compensates for the grayscale value of the compensation pixels. This not only reduces horizontal crosstalk to improve display quality but also reduces power consumption. Therefore, this embodiment can solve the technical problem that display devices cannot simultaneously achieve low power consumption and high-quality display in high refresh rate scenarios.

[0169] In one feasible embodiment, please refer to Figure 5 and Figure 8 , Figure 5 and Figure 8 These refer to different connection methods of the pixel circuits. The display panel 400 includes a gate line, a data line, and multiple pixels. For each pixel, the pixel includes two pixel circuits, and each pixel circuit includes a pixel electrode, a liquid crystal capacitor, a storage capacitor, a coupling capacitor, and a first transistor.

[0170] The pixel electrode is connected to the first end of the liquid crystal capacitor, the first end of the storage capacitor and the first end of the coupling capacitor. The first end of the liquid crystal capacitor is also connected to the first end of the first transistor. The second end of the first transistor is connected to the gate line Gate and the third end of the first transistor is connected to the data line Data.

[0171] The second end of the liquid crystal capacitor is connected to the common electrode, the second end of the storage capacitor is connected to the bias voltage source, and the second end of the coupling capacitor is connected to the compensation signal line; or, in the even-numbered rows of pixels in the display panel 400, the second ends of the liquid crystal capacitor, the second ends of the storage capacitor, and the second ends of the coupling capacitor are sequentially connected to the odd-numbered common electrode Com_odd and the even-numbered common electrode Com_even, and in the odd-numbered rows of pixels in the display panel 400, the second ends of the liquid crystal capacitor, the second ends of the storage capacitor, and the second ends of the coupling capacitor are sequentially connected to the even-numbered common electrode Com_even and the odd-numbered common electrode Com_odd.

[0172] It should be noted that the display panel 400 includes multiple gate lines, multiple data lines, and multiple pixels. The same gate line connects to pixels in the same pixel row, and the same data line connects to pixels in the same pixel column. Different gate lines connect to different pixel rows, and different data lines connect to different pixel columns. Each gate line is connected to a gate driver, and each data line is connected to a source driver.

[0173] Each pixel includes two pixel circuits. Each pixel circuit includes a pixel electrode, a liquid crystal capacitor, a storage capacitor, a coupling capacitor, and a first transistor. The two pixel circuits are a first pixel circuit and a second pixel circuit, which are basically symmetrical. The first pixel circuit also includes a second transistor, while the second pixel circuit does not include a second transistor. The gate of the second transistor in the first pixel circuit is connected to the gate line, and the source of the second transistor is connected to the first terminal of the storage capacitor.

[0174] For each pixel circuit, the pixel electrode in the pixel circuit is connected to the first end of the liquid crystal capacitor, the first end of the storage capacitor and the first end of the coupling capacitor. The first end of the liquid crystal capacitor is also connected to the first end (drain) of the first transistor. The second end of the first transistor is the gate, which is connected to the gate line Gate. The third end of the first transistor is the source, which is connected to the data line Data.

[0175] The second terminals of each liquid crystal capacitor in a pixel (the liquid crystal capacitors included in the pixel are respectively the liquid crystal capacitors in the first pixel circuit and the liquid crystal capacitors in the second pixel circuit), the second terminals of each storage capacitor in a pixel (the storage capacitors included in the pixel are respectively the storage capacitors in the first pixel circuit and the storage capacitors in the second pixel circuit), and the second terminals of each coupling capacitor in a pixel (the coupling capacitors included in the pixel are respectively the coupling capacitors in the first pixel circuit and the coupling capacitors in the second pixel circuit) can have multiple connection methods. These multiple connection methods are respectively the first implementation method or the second implementation method. The pixel can be configured to use the first implementation method or the second implementation method based on the actual situation. See references for each. Figure 5 and Figure 8 .

[0176] Figure 5 This illustrates the circuit connections of the first embodiment, in which the second terminal of the liquid crystal capacitor is connected to the common electrode, the second terminal of the storage capacitor is connected to the bias voltage source, and the second terminal of the coupling capacitor is connected to the compensation signal line. For details, refer to... Figure 5The circuit above the gate line can be considered the first pixel circuit, and the circuit below the gate line can be considered the second pixel circuit. Cs1 is the storage capacitor of the first pixel circuit, and Cs2 is the coupling capacitor of the first pixel circuit. The first terminal of the storage capacitor Cs1 is connected to the pixel electrode of the first pixel circuit, and the second terminal of the storage capacitor Cs1 is connected to the bias voltage source VST. The first terminal of the coupling capacitor Cs2' of the second pixel circuit is also connected to the pixel electrode of the first pixel circuit. The pixel electrode of the first pixel circuit is not... Figure 5 The diagram shows: Cs1' is the storage capacitor of the second pixel circuit, Cs2' is the coupling capacitor of the second pixel circuit, and Clc' is the liquid crystal capacitor of the second pixel circuit. The first terminal of the storage capacitor Cs1' is connected to the pixel electrode of the second pixel circuit, and the second terminal of the storage capacitor Cs1' is connected to the bias voltage source VST'. The first terminal of the coupling capacitor Cs2' is also connected to the pixel electrode of the second pixel circuit. The pixel electrode of the second pixel circuit is not... Figure 5 It is marked in the middle. Figure 5 In this diagram, Data refers to the data line, which is shared by both pixel circuits and used for writing data voltage. Gate refers to the gate line, which is also shared by both pixel circuits and controls the switching on and off of the transistors for data writing. VCOM is the common electrode, providing a voltage reference for the liquid crystal capacitors (Clc, Clc') in both sub-circuits. VST is the bias voltage source, and VST' is also a bias voltage source. VST provides a stable voltage reference for the storage capacitor Cs1 in the first pixel circuit, and VST' provides a stable voltage reference for Cs1'. VST and VST' are the same bias voltage source (e.g., DC voltage).

[0177] In this embodiment, the display panel 400 includes multiple film layers, which are a gate metal layer, a source / drain metal layer, a transparent conductive layer, and a common electrode layer. The gate line (Gate) is located in the gate metal layer, the data line (Data) is located in the source / drain metal layer, the pixel electrode is located in the transparent conductive layer, the common electrode is located in the common electrode layer, the bias voltage source is located in either the gate metal layer or the common electrode layer, and the gates of the first transistor and the second transistor are located in the gate metal layer, while their sources and drains are located in the drain / source metal layer. In the first embodiment, the compensation signal line is located in the source / drain metal layer and is not on the same film layer as the common electrode. Furthermore, it should be noted that in the first embodiment, the coupling capacitor (the coupling capacitor in the first pixel circuit or the coupling capacitor in the second pixel) is composed of the source / drain metal layer where the compensation signal line is located, an insulating layer, and the pixel electrode. An insulating layer also exists between the source / drain metal layer and the pixel electrode layer.

[0178] Reference Figure 8 , Figure 8The circuit connection relationship shown is that in the second embodiment, the second terminal of each liquid crystal capacitor in the even-numbered rows of pixels within the display panel 400 (the liquid crystal capacitors included in the pixel are respectively the liquid crystal capacitors in the first pixel circuit and the liquid crystal capacitors in the second pixel circuit), the second terminal of each storage capacitor (the storage capacitors included in the pixel are respectively the storage capacitors in the first pixel circuit and the storage capacitors in the second pixel circuit), and the second terminal of each coupling capacitor (the coupling capacitors included in the pixel are respectively the coupling capacitors in the first pixel circuit and the coupling capacitors in the second pixel circuit) are sequentially connected to the odd-numbered common electrode Com_odd and the even-numbered common electrode Com_even. The second terminal of each liquid crystal capacitor, each storage capacitor, and each coupling capacitor in the odd-numbered rows of pixels within the display panel 400 are sequentially connected to the even-numbered common electrode Com_even and the odd-numbered common electrode Com_odd. (Refer to...) Figure 8 It is known that the second end of each liquid crystal capacitor, the second end of each storage capacitor, and the second end of each coupling capacitor in the odd-numbered pixel columns are sequentially connected to the even-numbered common electrode Com_even and the odd-numbered common electrode Com_odd, respectively. Similarly, the second end of each liquid crystal capacitor, the second end of each storage capacitor, and the second end of each coupling capacitor in the even-numbered pixel columns are sequentially connected to the odd-numbered common electrode Com_odd and the even-numbered common electrode Com_even. In the second embodiment, the coupling capacitor in the first pixel circuit or the second pixel circuit is composed of a pixel electrode, an insulating layer, and a common electrode layer containing the even-numbered common electrode Com_even and the odd-numbered common electrode Com_odd. The even-numbered common electrode Com_even and the odd-numbered common electrode Com_odd are derived from the common electrode VCOM, and both are located in the common electrode layer.

[0179] In this embodiment, voltage compensation for pixels can be achieved through the first or second implementation method, thereby improving the flexibility of pixel voltage compensation and expanding the applicable scenarios of pixel voltage compensation.

[0180] The display device provided in this application adopts the control method of the display device in the above embodiments, aiming to solve the technical problem that the display device cannot simultaneously achieve low power consumption and high-quality display in high refresh rate scenarios. Compared with the prior art, the beneficial effects of the display device provided in this application are the same as the beneficial effects of the control method of the display device provided in the above embodiments, and other technical features in the display device are the same as the features disclosed in the methods of the above embodiments, and will not be repeated here.

[0181] This application provides a display device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, which are executed by the at least one processor to enable the at least one processor to perform the control method of the display device in the first embodiment described above.

[0182] The following is for reference. Figure 11 The diagram illustrates a structural schematic of a display device suitable for implementing embodiments of this application. The display device in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 11 The display device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0183] like Figure 11 As shown, the display device may include a processing unit 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory 1002 or a program loaded from a storage device 1003 into a random access memory 1004. The random access memory 1004 also stores various programs and data required for the operation of the display device. The processing unit 1001, the read-only memory 1002, and the random access memory 1004 are interconnected via a bus 1005. An input / output interface 1006 is also connected to the bus. Typically, the following systems can be connected to the input / output interface 1006: input devices 1007 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 1008 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 1003 including, for example, magnetic tapes, hard disks, etc.; and communication devices 1009. The communication device 1009 allows the display device to exchange data with other devices wirelessly or via wired communication. Although the diagram shows display devices with various systems, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems may be implemented alternatively.

[0184] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from read-only memory 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0185] The display device provided in this application, employing the control method of the display device in the above embodiments, can solve the technical problem that the display device cannot simultaneously achieve low power consumption and high-quality display in high refresh rate scenarios. Compared with the prior art, the beneficial effects of the display device provided in this application are the same as those of the control method of the display device provided in the above embodiments, and other technical features in this display device are the same as those disclosed in the method of the previous embodiment, and will not be repeated here.

[0186] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0187] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0188] This embodiment provides a computer-readable storage medium having computer-readable program instructions stored thereon, which are used to execute the control method of the display device in the first embodiment described above.

[0189] The computer-readable storage medium provided in this application embodiment may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor devices, apparatuses, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable EPROM (Electrical Programmable Read Only Memory) or flash memory, optical fiber, portable compact disk CD-ROM (compact discread-only memory), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution device, apparatus, or apparatus. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof. The aforementioned computer-readable storage medium may be included in a display device; or it may exist independently and not assembled into a display device.

[0190] The aforementioned computer-readable storage medium carries one or more programs that, when executed by a display device, cause the display device to: when it detects that the current frame displayed by the display device is a static image, control the display device to stop refreshing or reduce the refresh rate; when it detects that the current frame is a dynamic image, based on the grayscale difference of each pixel in the current frame determined by the current frame and the previous frame, determine grayscale transition pixels in the current frame whose grayscale difference is greater than or equal to a preset transition threshold, and determine compensation pixels whose grayscale difference is less than the preset transition threshold and whose grayscale transition pixels cause a voltage drop; reduce the grayscale value of the grayscale transition pixels and increase the grayscale value of the compensation pixels.

[0191] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a LAN (local area network) or WAN (wide area network)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0192] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of devices, methods, and computer program products according to various embodiments of the present application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, or they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based device that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions. Modules described in the embodiments of this disclosure may be implemented in software or hardware. The names of modules do not, in some cases, constitute a limitation on the unit itself. The computer-readable storage medium provided in this application embodiment stores computer-readable program instructions for executing the control method of the above-described display device, aiming to solve the technical problem that display devices cannot simultaneously achieve low power consumption and high-quality display in high refresh rate scenarios. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application embodiment are the same as the beneficial effects of the control method of the display device provided in the above-described embodiments, and will not be repeated here. This application embodiment also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the control method of the display device as described above. The computer program product provided in this application embodiment aims to solve the technical problem that display devices cannot simultaneously achieve low power consumption and high-quality display in high refresh rate scenarios. Compared with the prior art, the beneficial effects of the computer program product provided in this application embodiment are the same as the beneficial effects of the control method of the display device provided in the above-described embodiments, and will not be repeated here.

[0193] The above are merely preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structural or procedural transformations made using the description and drawings of the present application, or direct or indirect applications in other related technical fields, are similarly included within the patent processing scope of the present application.

Claims

1. A control method for a display device, characterized in that, The control method for the display device includes: If the current frame displayed by the display device is detected to be a static image, the display device is controlled to stop refreshing or reduce the refresh rate; When the current frame is detected as a dynamic scene, based on the grayscale difference of each pixel in the current frame determined by the current frame and the previous frame, grayscale jump pixels with grayscale difference greater than or equal to a preset jump threshold are determined in the current frame, and compensation pixels with grayscale difference less than the preset jump threshold and whose grayscale jump pixels cause voltage drop are determined. Decrease the grayscale value of the grayscale transition pixel and increase the grayscale value of the compensation pixel.

2. The control method for the display device as described in claim 1, characterized in that, The control method further includes: Based on the grayscale value of each pixel in the display device in the current frame and the grayscale value in the previous frame, the absolute value of the grayscale difference between the current frame and the previous frame is calculated to obtain the grayscale difference value of each pixel. If the grayscale difference of each pixel is less than a preset transition threshold, the display device is determined to be in static mode, and the number of times the display device is continuously in static mode is accumulated. If the number of static times is greater than or equal to a preset number, the current frame is determined to be a static image. If there is a pixel grayscale difference in the current frame that is greater than or equal to the preset jump threshold, the current frame is determined to be a dynamic image.

3. The control method for the display device as described in claim 1, characterized in that, The step of determining the compensation pixel whose grayscale difference is less than the preset transition threshold and whose voltage drop is caused by the grayscale transition pixel includes: In the current frame, a target pixel whose grayscale difference is less than a preset jump threshold is identified; For each target pixel, if the grayscale difference of the target pixel is greater than a preset static threshold, and there are grayscale jump pixels from the first column pixel of the pixel row where the target pixel is located to the target pixel, the target pixel is determined to be a compensation pixel.

4. The control method for the display device as described in claim 1, characterized in that, The step of reducing the grayscale value of the grayscale transition pixel and increasing the grayscale value of the compensation pixel includes: For each pixel row in the display device that has a grayscale jump pixel, the total voltage jump variable of the pixel row is calculated based on the voltage difference corresponding to the grayscale difference of each grayscale jump pixel in the pixel row, and the total voltage jump variable is normalized according to a preset voltage jump upper limit to obtain the voltage jump degree of the pixel row. For each grayscale jump pixel, based on the voltage jump degree of the pixel row where the grayscale jump pixel is located, the preset voltage reduction coefficient, and the original grayscale value of the grayscale jump pixel in the current frame, the target reduced grayscale value of the grayscale jump pixel is determined, and the original grayscale value of the grayscale jump pixel is reduced to the target reduced grayscale value, so as to reduce the grayscale value of the grayscale jump pixel. For each compensated pixel, based on the voltage jump level of the pixel row where the compensated pixel is located, the preset boost coefficient, and the original grayscale value of the compensated pixel in the current frame, the target boosted grayscale value of the compensated pixel is determined, and the original grayscale value of the compensated pixel is increased to the target boosted grayscale value, so as to improve the grayscale value of the compensated pixel.

5. The control method for the display device as described in claim 1, characterized in that, Each pixel electrode in the display device is connected to a storage capacitor, a coupling capacitor, and a liquid crystal capacitor. After the steps of reducing the grayscale value of the grayscale transition pixel and increasing the grayscale value of the compensation pixel, the control method of the display device further includes: For each pixel in the display device, the compensation voltage of the pixel is obtained based on the current grayscale value of the pixel; The voltage compensation amplitude of the pixel is determined based on the compensation voltage, the storage capacitor, the coupling capacitor, and the liquid crystal capacitor. The voltage transition direction of the pixel is determined, and a transition signal generated by the voltage transition direction and the voltage compensation amplitude is applied to the coupling capacitor to perform voltage compensation on the pixel.

6. The control method for the display device as described in claim 5, characterized in that, The coupling capacitor is connected to the compensation signal line; The step of determining the voltage transition direction of the pixel and applying a transition signal generated by the voltage transition direction and the voltage compensation amplitude to the coupling capacitor includes: The polarity of the current frame is detected, and the voltage transition direction of the pixel is determined based on the polarity of the current frame. When the current frame is a positive polarity frame, the voltage transition direction is positive compensation, and when the current frame is a negative polarity frame, the voltage transition direction is negative compensation. The switching signal is applied to the coupling capacitor through the compensation signal line.

7. The control method for the display device as described in claim 5, characterized in that, In the display device, the coupling capacitors of the even-numbered columns of pixels are connected in sequence to the even-numbered common electrode and the odd-numbered common electrode, and the coupling capacitors of the odd-numbered columns of pixels are connected in sequence to the odd-numbered common electrode and the even-numbered common electrode. The step of determining the voltage transition direction of the pixel and applying a transition signal generated by the voltage transition direction and the voltage compensation amplitude to the coupling capacitor includes: The voltage transition direction of the pixel is determined based on the pixel column in which the pixel is located; wherein, when the pixel column in which the pixel is located is an odd-numbered column, the voltage transition direction of the pixel is positive compensation, and when the pixel column in which the pixel is located is an even-numbered column, the voltage transition direction of the pixel is negative compensation. When the pixel is located in an even-numbered column, an inverse transition signal is applied to the even-numbered common electrode, and the inverse transition signal is restored through the odd-numbered common electrode to apply the transition signal to the coupling capacitance of the pixel. When the pixel is located in an odd-numbered column, a reverse transition signal is applied to the odd-numbered common electrode, and the reverse transition signal is restored through the even-numbered common electrode to apply the transition signal to the coupling capacitance of the pixel.

8. A display device, characterized in that, The display device is applied to the control method of the display device as described in any one of claims 1-7, the display device comprising: a main control module, a timing controller, a source driver, and a display panel, wherein the main control module is connected to the timing controller, the timing controller is connected to the source driver, and the source driver is connected to the display panel; The main control module is used to identify the screen state of the current frame displayed on the display panel, and is also used to, when the screen state is identified as a dynamic screen, determine, based on the gray level difference of each pixel in the current frame determined by the current frame and the previous frame, identify gray level jumping pixels in the current frame whose gray level difference is greater than or equal to a preset jumping threshold, and determine compensation pixels whose gray level difference is less than the preset jumping threshold and whose gray level jumping pixels cause a voltage drop; The timing controller is used to determine the target reduction of grayscale value for the grayscale jump pixel and the target increase of grayscale value for the compensation pixel. It is also used to control the display panel to stop refreshing or reduce the refresh rate when the screen state identified by the main control module is a static screen. The source driver is used to drive the grayscale jump pixel display by reducing the grayscale value based on the target, and is also used to drive the compensation pixel display by increasing the grayscale value based on the target.

9. The display device as claimed in claim 8, characterized in that, The display panel includes gate lines, data lines and multiple pixels. For each pixel, the pixel includes two pixel circuits. Each pixel circuit includes a pixel electrode, a liquid crystal capacitor, a storage capacitor, a coupling capacitor and a first transistor. The pixel electrode is connected to the first end of the liquid crystal capacitor, the first end of the storage capacitor, and the first end of the coupling capacitor. The first end of the liquid crystal capacitor is also connected to the first end of the first transistor. The second end of the first transistor is connected to the gate line, and the third end of the first transistor is connected to the data line. The second end of the liquid crystal capacitor is connected to a common electrode, the second end of the storage capacitor is connected to a bias voltage source, and the second end of the coupling capacitor is connected to a compensation signal line; or, in the even-numbered rows of pixels in the display panel, the second ends of the liquid crystal capacitor, the storage capacitor, and the coupling capacitor are all sequentially connected to the odd-numbered common electrode and the even-numbered common electrode, and in the odd-numbered rows of pixels in the display panel, the second ends of the liquid crystal capacitor, the storage capacitor, and the coupling capacitor are all sequentially connected to the even-numbered common electrode and the odd-numbered common electrode.

10. A display device, characterized in that, The display device includes at least one processor and a memory communicatively connected to the at least one processor; The memory stores instructions that can be executed by at least one processor, which enables the at least one processor to perform steps of the control method for the display device as described in any one of claims 1 to 7.

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