Display device and display compensation method thereof

Abstract

The application provides a display device and a display compensation method thereof, and belongs to the technical field of display. The display compensation method of the display device provided by the application comprises the following steps: obtaining reference quality compensation data based on to-be-displayed frame image data of a liquid crystal display panel, and obtaining reference quality gain data based on the to-be-displayed frame image data of the liquid crystal display panel; selecting a target display mode from a first display mode and a second display mode; calculating target quality compensation data according to the target display mode, the reference quality compensation data and the reference quality gain data; and compensating the to-be-displayed frame image data based on the target quality compensation data. The application calculates the target quality compensation data in a manner that saves 1-2 frames of time required for the display device to switch the target display mode corresponding to the quality compensation data, thereby solving the problem of long time consumption when the display device switches to the target display mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display device and a display compensation method thereof. BACKGROUND

[0002] With the development of display technology, the size of display device is getting larger and larger. For the liquid crystal display panel of large size display device, its viewing angle parameter is particularly important. In different types of liquid crystal display panel, the viewing angle of vertical alignment (VA) type liquid crystal display panel has obvious disadvantages. In order to reduce the viewing angle disadvantage, the related technology proposes to use view angle compensation (VAC) method to improve the viewing angle effect of VA type liquid crystal display panel.

[0003] Because the Gamma curve of VA type liquid crystal display panel in the first preset display mode (such as the view angle compensation mode open state) and the Gamma curve in the second preset display mode (such as the view angle compensation mode off state) are too different, therefore, there is obvious display quality difference during the display mode switching of VA type liquid crystal display panel. In order to solve the display quality difference caused by this problem, the usual way is to switch the quality compensation data corresponding to the target display mode at the same time of the target display mode switching.

[0004] However, the display device needs 1 frame to 2 frames of time to switch the quality compensation data, so that the display device cannot normally display during the switching of the target display mode. SUMMARY

[0005] The present application provides a display device and a display compensation method thereof to solve the problem of long switching time required by the display device switching to the target display mode.

[0006] In a first aspect, the present application provides a display compensation method of a display device, comprising the following steps: obtaining reference quality compensation data based on the to-be-displayed frame image data of a liquid crystal display panel, the first quality compensation data being the quality compensation data when the liquid crystal display panel displays in a first display mode; obtaining reference quality gain data based on the to-be-displayed frame image data, wherein the reference quality gain data is calculated based on the second quality compensation data and the reference quality compensation data, the second quality compensation data being the quality compensation data when the liquid crystal display panel displays in a second display mode; selecting a target display mode from the first display mode and the second display mode; calculating target quality compensation data according to the target display mode, the reference quality compensation data and the reference quality gain data; compensating the to-be-displayed frame image data according to the target quality compensation data.

[0007] In the display compensation method of the display device provided in the present application, the step of calculating the target image quality compensation data according to the target display mode, the reference image quality compensation data and the reference image quality gain data comprises: obtaining a target parameter according to the target display mode; and calculating the target image quality compensation data based on the target parameter, the reference image quality compensation data and the reference image quality gain data.

[0008] In the display compensation method of the display device provided in the present application, the step of obtaining the target parameter according to the target display mode comprises: selecting the target parameter from a first preset parameter and a second preset parameter according to the target display mode.

[0009] In the display compensation method of the display device provided in the present application, the step of selecting the target parameter from a first preset parameter and a second preset parameter according to the target display mode comprises: selecting the target parameter from the first preset parameter and the second preset parameter according to the target display mode during a blank period between a frame display end time point of current frame image data and a frame display start time point of the to-be-displayed frame image data.

[0010] In the display compensation method of the display device provided in the present application, the step of selecting the target parameter from a first preset parameter and a second preset parameter according to the target display mode comprises: in a case where the target display mode is the first display mode, selecting the first preset parameter as the target parameter according to the first display mode from the first preset parameter and the second preset parameter, wherein the first preset parameter is equal to 0; or, in a case where the target display mode is the second display mode, selecting the second preset parameter as the target parameter according to the second display mode from the first preset parameter and the second preset parameter, wherein the second preset parameter is equal to 1.

[0011] In the display compensation method of the display device provided in the present application, the step of calculating the target image quality compensation data based on the target parameter, the reference image quality compensation data and the reference image quality gain data comprises: calculating the target image quality compensation data based on the target parameter, the reference image quality compensation data and the reference image quality gain data during the blank period; and the step of compensating the to-be-displayed frame image data according to the target image quality compensation data comprises: compensating the to-be-displayed frame image data according to the target image quality compensation data during the blank period.

[0012] In the display compensation method of the display device provided in the application, the step of calculating the target picture quality compensation data based on the target parameter, the reference picture quality compensation data and the reference picture quality gain data comprises: calculating the target picture quality compensation data based on a preset relationship, the target parameter, the reference picture quality compensation data and the reference picture quality gain data, wherein the preset relationship is: C t = C b + C d a; wherein C t is the target picture quality compensation data, C b is the reference picture quality compensation data, C d is the reference picture quality gain data, and a is the target parameter.

[0013] In the display compensation method of the display device provided in the application, the reference picture quality gain data is the difference between the second picture quality compensation data and the reference picture quality compensation data.

[0014] In a second aspect, the application further provides a display device, comprising: a liquid crystal display panel; a picture quality compensation data storage module, configured to store preset reference picture quality compensation data and reference picture quality gain data; a display mode selection module, configured to select a target display mode from a first display mode and a second display mode; a reference data acquisition module, configured to acquire, based on to-be-displayed frame image data of the liquid crystal display panel, the reference picture quality compensation data corresponding to the to-be-displayed frame image data and the reference picture quality gain data corresponding to the to-be-displayed frame image data from the picture quality compensation data storage module; and a picture quality compensation module, configured to calculate target picture quality compensation data based on the target display mode, the reference picture quality compensation data corresponding to the to-be-displayed frame image data and the reference picture quality gain data corresponding to the to-be-displayed frame image data, and compensate the to-be-displayed frame image data based on the target picture quality compensation data.

[0015] In the display device provided in the application, the display device further comprises a target parameter selection module, configured to select a target parameter from a first preset parameter and a second preset parameter according to the target display mode.

[0016] The picture quality compensation module is configured to calculate the target picture quality compensation data based on the target parameter corresponding to the target display mode, the reference picture quality compensation data corresponding to the to-be-displayed frame image data and the reference picture quality gain data corresponding to the to-be-displayed frame image data.

[0017] The display compensation method of the display device provided in the application obtains reference picture quality compensation data and reference picture quality gain data corresponding to frame image data to be displayed of a liquid crystal display panel, selects a target display mode from a first display mode and a second display mode of the liquid crystal display panel, calculates target picture quality compensation data according to the target display mode, the reference picture quality compensation data and the reference picture quality gain data, and finally compensates the frame image data to be displayed of the liquid crystal display panel according to the calculated target picture quality compensation data, so that the target picture quality compensation data is calculated instead of the picture quality compensation data corresponding to the target display mode being re-switched and loaded, and then 1-2 frames of time required for the display device to switch the picture quality compensation data corresponding to the target display mode is saved, and the problem of long time consumption of the display device switching to the target display mode is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A flowchart of a display compensation method of a display device provided for an embodiment of the application;

[0019] Figure 2 A flowchart of a first flow of step S40 of Figure 1

[0020] Figure 3 A signal waveform diagram of a display device provided for an embodiment of the application during a frame;

[0021] Figure 4 A flowchart of a second flow of step S40 of Figure 1

[0022] Figure 5a A first waveform diagram of signals during a current frame period and a frame to be displayed of a display device provided for an embodiment of the application;

[0023] Figure 5b A second waveform diagram of signals during a current frame period and a frame to be displayed of a display device provided for an embodiment of the application;

[0024] Figure 5c A third waveform diagram of signals during a current frame period and a frame to be displayed of a display device provided for an embodiment of the application;

[0025] Figure 6 A flowchart of a third flow of step S40 of Figure 1

[0026] Figure 7 A first block diagram of a display device provided for an embodiment of the application;

[0027] Figure 8 ​​​A second block diagram of a display apparatus provided for embodiments of the present application. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. The described embodiments are only used to explain and describe the ideas of the present application, and should not be regarded as limiting the protection scope of the present application.

[0029] In some embodiments provided by the present application, as shown in Figure 1 The display compensation method 100 of the display apparatus includes steps S10, S20, S30, S40 and S50.

[0030] In step S10, reference quality compensation data is obtained based on the to-be-displayed frame image data of the liquid crystal display panel.

[0031] The reference quality compensation data is quality compensation data when the liquid crystal display panel displays in the first display mode. That is, the reference quality compensation data is quality compensation data corresponding to the to-be-displayed frame image data of the liquid crystal display panel when the liquid crystal display panel displays in the first display mode.

[0032] In step S10, the to-be-displayed frame image data refers to frame image data corresponding to a to-be-displayed frame picture of the liquid crystal display panel, and the frame image data includes the gray value and / or the brightness value of each pixel in the liquid crystal display panel.

[0033] That is, in step S10, the to-be-displayed frame image data includes the gray value and / or the brightness value of each pixel in the liquid crystal display panel in the to-be-displayed frame picture. Thus, the reference quality compensation data is a compensation value corresponding to the gray value and / or the brightness value of each pixel in the liquid crystal display panel in the to-be-displayed frame picture when the liquid crystal display panel displays in the first display mode, that is, a gray scale compensation value corresponding to the gray value of each pixel in the liquid crystal display panel in the to-be-displayed frame picture, and / or a brightness compensation value corresponding to the brightness value of each pixel in the liquid crystal display panel in the to-be-displayed frame picture.

[0034] The quality compensation data can be at least one of white balance (ACC) compensation data, over drive (OD) compensation data, gamma adjustment (dual gamma) data, and demura compensation data of the liquid crystal display panel.

[0035] In step S20, reference quality gain data is obtained based on the to-be-displayed frame image data of the liquid crystal display panel.

[0036] The reference quality gain data is calculated based on the second quality compensation data and the reference quality compensation data in step S10. The second quality compensation data is the quality compensation data corresponding to the to-be-displayed frame image data of the liquid crystal display panel when the liquid crystal display panel displays in the second display mode. That is, the second quality compensation data is the compensation value corresponding to the gray value and / or the brightness value of each pixel in the to-be-displayed frame image of the liquid crystal display panel when the liquid crystal display panel displays in the second display mode.

[0037] The first display mode of the liquid crystal display panel and the second display mode of the liquid crystal display panel are different display modes preset in advance.

[0038] For the VA-type liquid crystal display panel, when the VA-type liquid crystal display panel performs the view angle compensation, it needs to switch from the view angle compensation mode off state to the view angle compensation mode on state, and when the VA-type liquid crystal display panel does not perform the view angle compensation, it needs to switch from the view angle compensation mode on state to the view angle compensation mode off state. Therefore, the first display mode of the VA-type liquid crystal display panel refers to one of the view angle compensation mode on and the view angle compensation mode off, and the second display mode of the VA-type liquid crystal display panel refers to the other of the view angle compensation mode on and the view angle compensation mode off.

[0039] It should be noted that the embodiment only takes the switching state of the view angle compensation mode of the VA-type liquid crystal display panel as an example to illustrate the switching of the liquid crystal display panel from one display mode to another display mode. The display compensation method provided by the embodiment is not limited to be applicable to the VA-type liquid crystal display panel, but can also be applicable to the display compensation involved in the switching of other types of liquid crystal display panels from one display mode to another display mode.

[0040] Since the first display mode and the second display mode are different display modes, the quality compensation data required when the liquid crystal display panel displays in the first display mode and the quality compensation data required when the liquid crystal display panel displays in the second display mode need to be respectively obtained through debugging before the liquid crystal display panel is shipped.

[0041] The reference quality gain data corresponding to the to-be-displayed frame image data is calculated based on the second quality compensation data corresponding to the to-be-displayed frame image data and the reference quality compensation data corresponding to the to-be-displayed frame image data.

[0042] Further, the reference quality gain data is the difference between the second quality compensation data and the reference quality compensation data. That is, the reference quality gain data, the second quality compensation data, and the reference quality compensation data satisfy the following gain relationship formula:

[0043] ΔC=(C2-C1)×b (1);

[0044] In the gain relationship (1), AC is the reference picture quality gain data, C1 is the reference picture quality compensation data, C2 is the second picture quality compensation data, and b is the gain parameter. In the embodiments provided in the present application, b is equal to 1, and thus the reference picture quality gain compensation data calculated by substituting the second picture quality compensation data and the reference picture quality compensation data into the gain relationship (1) is the difference between the second picture quality compensation data and the reference picture quality compensation data.

[0045] In the gain relationship (1), the gain parameter is a preset parameter, and in some other embodiments provided in the present application, the gain parameter can be less than 1 or greater than 1.

[0046] Step S30: selecting a target display mode from the first display mode and the second display mode.

[0047] The target display mode is one of the first display mode and the second display mode. The specific determination of the target display mode depends on the display mode instruction received by the controller of the display device when controlling the liquid crystal display panel to display a picture or before controlling the liquid crystal display panel to display a picture. For example, when the display device receives a first display mode instruction corresponding to the first display mode from the outside, the controller selects the first display mode as the target display mode based on the first display mode instruction.

[0048] The execution sequence among the steps S10, the step S20, and the step S30 is not limited, and the steps can be executed simultaneously or at different times.

[0049] Step S40: calculating target picture quality compensation data according to the target display mode, the reference picture quality compensation data, and the reference picture quality gain data. That is, the target picture quality compensation data is determined by the target display mode, the reference picture quality compensation data corresponding to the frame image to be displayed, and the reference picture quality gain data corresponding to the frame image to be displayed.

[0050] The step S40 calculates the target picture quality compensation data based on the target display mode, the reference picture quality compensation data, and the reference picture quality gain data, which replaces the need to switch from the picture quality compensation data corresponding to the non-target display mode to the picture quality compensation data corresponding to the target display mode in order to obtain the target picture quality compensation data in the related art.

[0051] Since the reference picture quality compensation data and the reference picture quality gain data are both data in the display device with a storage function and are preset, the display compensation method provided in the present embodiment does not need to re-switch and load the picture quality compensation data corresponding to the target display mode before the liquid crystal display panel outputs the target picture quality compensation data, thereby being able to save the time of 1 frame to 2 frames required by the liquid crystal display panel to switch the picture quality compensation data, and further solving the problem of long time consumption of the liquid crystal display panel to switch the display mode.

[0052] like Figure 2 As shown, in some embodiments provided in this application, step S40 includes steps S41 and S42.

[0053] Step S41: Obtain target parameters according to the target display mode.

[0054] The target parameters are determined based on the target display mode. That is, the target parameters corresponding to the first display mode are not the same as the target parameters corresponding to the second display mode.

[0055] Furthermore, step S41 specifically includes:

[0056] Step S411: Select a target parameter from the first preset parameter and the second preset parameter according to the target display mode. The first preset parameter is the preset parameter corresponding to the first display mode of the liquid crystal display panel, and the second preset parameter is the preset parameter corresponding to the second display mode of the liquid crystal display panel.

[0057] In step S411, when the target display mode is the first display mode, the first preset parameter is selected as the target parameter from the first preset parameter and the second preset parameter according to the first display mode. The first preset parameter is equal to 0.

[0058] In step S411, when the target display mode is the second display mode, the second preset parameter is selected as the target parameter from the first preset parameter and the second preset parameter according to the second display mode. The second preset parameter is equal to 1.

[0059] Furthermore, in some embodiments provided in this application, step S411 specifically includes: during the frame period corresponding to the image displayed in the current frame, selecting a target parameter from the first preset parameter and the second preset parameter according to the target display mode.

[0060] like Figure 3 As shown, a complete frame period 1F is defined by the vertical start signal VST of the liquid crystal display panel. The start time of 1F corresponds to the rise time of VST, and the end time of 1F corresponds to the rise time of the vertical start signal VST of the adjacent next frame period.

[0061] 1F includes applying scan signals and data signals to the pixel array of the liquid crystal display panel. Figure 3The effective display period Ta and the vertical blanking period Tb set before, after, or before and after the effective display period Ta. In the effective display period Ta, the display device implements writing of display image data corresponding to a frame display image to a pixel array of the liquid crystal display panel. In the vertical blanking period Tb, the pixel array of the liquid crystal display panel does not display any image.

[0062] Therefore, in the current frame period (i.e., the frame period corresponding to the current frame display image), the target parameter is selected from the first preset parameter and the second preset parameter according to the target display mode: in the effective display period within the current frame period (i.e., the frame period corresponding to the current frame display image), the target parameter is selected from the first preset parameter and the second preset parameter according to the target display mode; or in the vertical blanking period within the current frame period, the target parameter is selected from the first preset parameter and the second preset parameter according to the target display mode.

[0063] In some other embodiments provided in the present application, as shown in Figure 4 The step S411 specifically includes: in the blanking period between the frame display end point of the current display frame image data and the frame display start point of the to-be-displayed frame image data, the target parameter is selected from the first preset parameter and the second preset parameter according to the target display mode.

[0064] As shown in Figure 5a to Figure 5c The current frame period F1 and the next frame period F2 both include the effective display period and the vertical blanking period.

[0065] Specifically, as shown in Figure 5a The current frame period F1 and the next frame period F2 both include the first vertical blanking period Tb1 set before the effective display period Ta, the effective display period Ta, and the second vertical blanking period Tb2. Then, the blanking period TB between the frame display end point t12 of the current display frame image data and the frame display start point t21 of the to-be-displayed frame image data in the present embodiment is the second vertical blanking period Tb2 of the current frame period F1 and the first vertical blanking period Tb1 of the next frame period F2.

[0066] Specifically, as shown in Figure 5b The current frame period F1 and the next frame period F2 both include the first vertical blanking period Tb1 set before the effective display period Ta and the effective display period Ta. Then, the blanking period TB between the frame display end point t12 of the current display frame image data and the frame display start point t21 of the to-be-displayed frame image data in the present embodiment is the first vertical blanking period Tb1 of the next frame period F2.

[0067] Specifically, as shown in Figure 5cAs shown, both the current frame period F1 and the next frame period F2 include an effective display period Ta and a second vertical blanking period Tb2 set after the effective display period Ta. Then, the blanking period TB between the frame display end point t12 of the current display frame image data and the frame display start point t21 of the to-be-displayed frame image data in this embodiment is the second vertical blanking period Tb2 of the current frame period F1.

[0068] In step S42, the target quality compensation data is calculated based on the target parameter, the reference quality compensation data and the reference quality gain data.

[0069] In some embodiments provided in the present application, the target quality compensation data is calculated based on a preset relationship, the target parameter, the reference quality compensation data and the reference quality gain data. The preset relationship is:

[0070] C t =C b +C d ×a (2);

[0071] In the preset relationship (2), C t is the target quality compensation data, C b is the reference quality compensation data, C d is the reference quality gain data, and a is the target parameter.

[0072] The step S42 is exemplified below, and the first display mode is taken as the view angle compensation enabled mode, and the second display mode is taken as the view angle compensation disabled mode.

[0073] When the display mode of the liquid crystal display panel needs to be switched from the view angle compensation disabled mode to the view angle compensation enabled mode, i.e., when the target display mode of the liquid crystal display panel is the first display mode, the target parameter is the first preset parameter corresponding to the first display mode, and the target parameter a=0. Then, the target compensation data C t =C b +C d ×0=C b , i.e., the target quality compensation data C t is equal to the reference quality compensation data C b , i.e., the target quality compensation data C t is the quality compensation data when the liquid crystal display panel displays in the first display mode.

[0074] The target compensation data calculated based on step S42 can meet the corresponding reference quality compensation data required when the liquid crystal display panel displays in the first display mode, and there is no need to switch the second display mode corresponding second quality compensation data to the first display mode corresponding reference quality compensation data through the display device to obtain the target compensation data, so that the time required for switching and loading the reference quality compensation data and the second quality compensation data back and forth can be saved based on the present step S42.

[0075] When the display mode of the liquid crystal display panel needs to be switched from the viewing angle compensation on mode to the viewing angle compensation off mode, that is, the target display mode of the liquid crystal display panel is the second display mode, the target parameter is the second preset parameter corresponding to the second display mode, the target parameter a = 1, then the target compensation data C t = C b + C d × 1 = C b + C d , that is, the target quality compensation data C t is equal to the sum of the reference quality compensation data C b and the reference quality gain data C d . According to the gain relationship formula (1), when the gain parameter b is equal to 1, the reference quality gain data is equal to the difference between the second quality compensation data corresponding to the reference quality compensation data and the reference quality compensation data, that is, C d = (C 2_d - C b ) × 1. Therefore, C t = C b + C d × 1 = C b + C d = C b + (C 2_b - C b ) = C 2_b , that is, the target quality compensation data C t is the quality compensation data corresponding to the to-be-displayed frame image data when the liquid crystal display panel displays in the second display mode.

[0076] The target compensation data calculated based on step S42 can meet the corresponding second quality compensation data required when the liquid crystal display panel displays in the second display mode, and there is no need to switch the first display mode corresponding reference quality compensation data to the second display mode corresponding second quality compensation data through the display device to obtain the target compensation data, so that the time required for switching and loading the reference quality compensation data and the second quality compensation data back and forth can be saved based on the present step S42.

[0077] Specifically, as Figure 6As shown, step S42 can specifically include step S421: calculating target quality compensation data based on the target parameter, the reference quality compensation data, and the reference quality gain data during the blank period between the frame display end point of the current display frame image data and the frame start point of the to-be-displayed frame image data.

[0078] Since the pixel array of the liquid crystal display panel does not display any image during the blank period, the processor of the display device is facilitated to perform the calculation of the target quality compensation data. Since the target compensation data corresponding to the to-be-displayed frame image data can be obtained during the blank period between the frame display end point of the current display frame image data and the frame start point of the to-be-displayed frame image data, the time required for switching the reference quality compensation data and the second quality compensation data back and forth is saved.

[0079] Step S50: compensating the to-be-displayed frame image data according to the target quality compensation data.

[0080] Specifically, step S50 is compensating the to-be-displayed frame image data of the liquid crystal display panel according to the target quality compensation data during the blank period between the frame display end point of the current display frame image data and the frame start point of the to-be-displayed frame image data. As shown, Figure 5a to Figure 5c As shown, the liquid crystal display panel starts to display the image data compensated based on the target quality compensation data from the frame display start point t21 of the effective display period Ta of the next frame period F2.

[0081] Since the pixel array of the liquid crystal display panel does not display any image during the blank period, the processor of the display device is facilitated to compensate the to-be-displayed image data of the liquid crystal display panel according to the target quality compensation data during the blank period, so that the instantaneous brightness difference caused by the display mode switching will not be presented when the current display frame image or the to-be-displayed frame image is displayed, and thus it is not necessary to control the liquid crystal display panel to start black screen display when the display mode is switched to avoid flicker of the liquid crystal display panel, thereby increasing the application scenarios of the liquid crystal display device.

[0082] In the second aspect of the present application, the embodiments of the present application further provide a display device. As shown, Figure 7 As shown, the display device 200 includes a liquid crystal display panel 201, a quality compensation data storage module 202, a display mode selection module 203, a reference data acquisition module 204, and a quality compensation module 205.

[0083] The quality compensation data storage module 202 is configured to store the pre-set reference quality compensation data and reference quality gain data.

[0084] The reference quality compensation data is quality compensation data when the liquid crystal display panel displays in the first display mode. That is, the reference quality compensation data is compensation values corresponding to the gray value and / or the brightness value of each pixel in the liquid crystal display panel in the frame image to be displayed when the liquid crystal display panel displays in the first display mode.

[0085] The quality compensation data can be at least one of white balance compensation (ACC) data, over driver (OD) compensation data, gamma adjustment (dual gamma) data, and demura compensation data of the liquid crystal display panel.

[0086] The display mode selection module 203 is configured to select a target display mode from the first display mode and the second display mode. That is, the display mode selection module 203 receives a display mode instruction from outside the display device, and selects one of the first display mode and the second display mode as the target display mode based on the display mode instruction.

[0087] The first display mode of the liquid crystal display panel and the second display mode of the liquid crystal display panel are different display modes. For a VA-type liquid crystal display panel, when the VA-type liquid crystal display panel performs view angle compensation, it needs to switch from the view angle compensation off mode to the view angle compensation on mode, and when the VA-type liquid crystal display panel does not perform view angle compensation, it needs to switch from the view angle compensation on mode to the view angle compensation off mode. Therefore, the first display mode refers to one of the view angle compensation on mode and the view angle compensation off mode, and the second display mode refers to the other of the view angle compensation on mode and the view angle compensation off mode.

[0088] Since the first display mode and the second display mode are different display modes, the quality compensation data required when the liquid crystal display panel displays in the first display mode and the quality compensation data required when the liquid crystal display panel displays in the second display mode are not necessarily the same.

[0089] In some embodiments provided in the present application, the display mode selection module 203 is configured to select the target display mode from the first display mode and the second display mode during a blank period between the end of the frame display of the current frame image and the start of the frame display of the frame image to be displayed.

[0090] The reference data acquisition module 204 is configured to acquire, based on the frame image data to be displayed of the liquid crystal display panel 201, reference quality compensation data corresponding to the frame image data to be displayed and reference quality gain data corresponding to the frame image data to be displayed from the quality compensation data storage module 202.

[0091] The to-be-displayed frame image data refers to frame image data corresponding to a to-be-displayed frame picture of the liquid crystal display panel, and the to-be-displayed frame image data includes gray scale values and brightness values of each pixel in the to-be-displayed frame picture. The reference quality compensation data refers to compensation values corresponding to the gray scale values and / or brightness values of each pixel in the to-be-displayed frame picture when the liquid crystal display panel displays in the first display mode. The reference quality gain data refers to quality gain data corresponding to the to-be-displayed frame image data of the liquid crystal display panel.

[0092] The quality gain data is calculated based on the second quality compensation data and the reference quality compensation data, and the second quality compensation data refers to quality compensation data corresponding to the to-be-displayed frame image data of the liquid crystal display panel when the liquid crystal display panel displays in the second display mode. That is, the second quality compensation data refers to compensation values corresponding to the gray scale values and / or brightness values of each pixel in the to-be-displayed frame picture when the liquid crystal display panel displays in the second display mode.

[0093] The quality compensation module 205 is configured to calculate target quality compensation data based on the target display mode, the reference quality compensation data corresponding to the to-be-displayed frame image data, and the reference quality gain data corresponding to the to-be-displayed frame image data, and compensate the to-be-displayed frame image data of the liquid crystal display panel based on the target quality compensation data.

[0094] The display device provided by the embodiment of the present application selects the target display mode of the liquid crystal display panel after display mode switching from the first display mode and the second display mode through the display mode selection module 203, and acquires the reference quality compensation data corresponding to the to-be-displayed frame image data and the reference quality gain data corresponding to the to-be-displayed frame image data through the reference data acquisition module 204. The quality compensation module 205 calculates the target quality compensation data based on the target display mode, the reference quality compensation data corresponding to the to-be-displayed frame image data, and the reference quality gain data corresponding to the to-be-displayed frame image data, and compensates the to-be-displayed frame image data based on the target quality compensation data. In this way, the target quality compensation data is calculated in the manner of replacing the re-switching and loading of the quality compensation data corresponding to the target display mode in the related art, and the time of 1 frame to 2 frames required for the display device to switch the quality compensation data corresponding to the target mode is saved, thereby solving the problem of long time consumption when the display device switches to the target display mode.

[0095] In some embodiments provided by the present application, the quality compensation module 205 is configured to compensate the to-be-displayed frame image data of the liquid crystal display panel based on the target quality compensation data during a blank period between the end time point of the frame display of the current display frame image and the start time point of the frame display of the to-be-displayed frame image.

[0096] By controlling the image quality compensation module 205 to compensate for the image data of the frame to be displayed during the blank period between the end point of the current display frame image and the start point of the frame display of the image to be displayed, it is ensured that the LCD panel has been displaying the image quality compensation data corresponding to the target display mode from the start point of the frame display of the image to be displayed. Thus, the instantaneous brightness difference caused by the display mode switching will not be presented when the image to be displayed is displayed. Therefore, it is not necessary to control the LCD panel to turn on black screen display when the display mode switches to avoid the screen flickering of the LCD panel, thus increasing the application scenarios of the LCD display device.

[0097] Furthermore, in some embodiments provided in this application, the image quality compensation module 205 is used to calculate target image quality compensation data based on the target display mode, reference image quality compensation data, and reference image quality gain data during the blank period between the end point of the current display frame image and the start point of the frame display of the frame image to be displayed.

[0098] By controlling the image quality compensation module 205 to calculate the target image quality compensation data during the blank period between the end point of the current display frame image and the start point of the frame display of the image to be displayed, the display device does not need to switch and load the image quality compensation data corresponding to the target display mode, saving the time of 1 to 2 frames required for the display device to switch the image quality compensation data.

[0099] and Figure 7 In comparison, such as Figure 8 The display device shown also includes a target parameter selection module 206. The target parameter selection module 206 is used to select a target parameter from a first preset parameter and a second preset parameter according to the target display mode.

[0100] The image quality compensation module 205 is used to obtain target parameters from the target parameter selection module 206, and to obtain reference image quality compensation data and reference image quality gain data corresponding to the image data of the frame to be displayed from the reference data acquisition module 204. The module 205 calculates the target image quality compensation data based on the target parameters, the reference image quality compensation data corresponding to the image data of the frame to be displayed, and the reference image quality gain data corresponding to the image data of the frame to be displayed.

[0101] In some embodiments provided in this application, the target parameter selection module 206 is used to select a target parameter from a first preset parameter and a second preset parameter during the blank period between the end point of the current displayed frame image and the start point of the frame display of the frame image to be displayed, according to the target display mode. This eliminates the need to occupy valid display time in the current frame period and / or the frame period to be displayed for the selection of the target parameter.

[0102] The above operation and / or function in the display device provided in the present application is used to realize the corresponding flow of the display compensation method of the display device provided in the present application.

[0103] The display device provided in the present application comprises a processor and a memory, wherein the processor and the memory exchange data through a signal line. The memory is used to store program code, and the processor executes the program code to execute the display compensation method of the display device provided in the present application when the display device is running.

[0104] The memory of the present application stores program code, which is used to make the display device execute the display compensation method of the display device provided in the present application.

[0105] The memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD ROM) or other optical disc memory, a magnetic disc memory, a magnetic tape memory, or any other nonvolatile computer-readable storage medium capable of carrying or storing data.

[0106] The processor of the display device 200 can be composed of an integrated circuit. For example, it can be composed of a single packaged integrated circuit, or it can be composed of multiple packaged integrated circuits with the same function or different functions, including a combination of one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors and various control chips, etc. Among them, at least one processor is the control core (Control Unit) of the display device 200, which connects all components of the display device 200 through various interfaces and lines, and executes the program or module or instruction stored in the memory, and calls the data stored in the memory, to execute various functions of the display device 200 and process data.

[0107] Of course, the present application can have other various embodiments and can be carried out in various ways without departing from the spirit and essential characteristics of the present application. Therefore, the scope of the appended claims should not be limited to the above embodiments but should be given the broadest possible interpretation available under the law.

Claims

1. A display compensation method for a display device, characterized in that, Includes the following steps: Based on the image data of the frame to be displayed on the liquid crystal display panel, the reference image quality compensation data is the image quality compensation data when the liquid crystal display panel is displayed in the first display mode. Based on the image data of the frame to be displayed, a reference image quality gain data is obtained, wherein the reference image quality gain data is calculated based on the second image quality compensation data and the reference image quality compensation data, and the second image quality compensation data is the image quality compensation data when the liquid crystal display panel is displayed in the second display mode; Select a target display mode from the first display mode and the second display mode; The target image quality compensation data is calculated based on the target display mode, the baseline image quality compensation data, and the baseline image quality gain data. During the blank period between the end point of the current display frame image data and the start point of the frame display of the frame image data to be displayed, the target image quality compensation data is calculated based on the target parameters, the reference image quality compensation data, and the reference image quality gain data; during the blank period, the frame image data to be displayed is compensated according to the target image quality compensation data.

2. The display compensation method for the display device according to claim 1, characterized in that, The step of calculating the target quality compensation data based on the target display mode, the reference image quality compensation data, and the reference image quality gain data includes: Obtain the target parameters according to the target display mode; The target image quality compensation data is calculated based on the target parameters, the baseline image quality compensation data, and the baseline image quality gain data.

3. The display compensation method for the display device according to claim 2, characterized in that, The step of obtaining the target parameters according to the target display mode includes: The target parameter is selected from the first preset parameter and the second preset parameter according to the target display mode.

4. The display compensation method for the display device according to claim 3, characterized in that, The step of selecting the target parameter from the first preset parameter and the second preset parameter according to the target display mode includes: During the blank period between the end point of the current display frame image data and the start point of the frame display of the frame image data to be displayed, the target parameter is selected from the first preset parameter and the second preset parameter according to the target display mode.

5. The display compensation method for the display device according to claim 3 or 4, characterized in that, The step of selecting the target parameter from the first preset parameter and the second preset parameter according to the target display mode includes: When the target display mode is the first display mode, the first preset parameter is selected as the target parameter from the first preset parameter and the second preset parameter according to the first display mode, wherein the first preset parameter is equal to 0; Alternatively, if the target display mode is the second display mode, the second preset parameter is selected as the target parameter from the first preset parameter and the second preset parameter according to the second display mode, wherein the second preset parameter is equal to 1.

6. The display compensation method for the display device according to claim 1 or 2, characterized in that, The step of calculating the target quality compensation data based on the target parameters, the reference image quality compensation data, and the reference image quality gain data includes: The target quality compensation data is calculated based on a preset relational expression, the target parameters, the baseline image quality compensation data, and the baseline image quality gain data. The preset relational expression is: ； Among them, C t For the target image quality compensation data, C b As the baseline image quality compensation data, C d 'a' represents the baseline image quality gain data, and 'a' represents the target parameter.

7. The display compensation method for the display device according to claim 1, characterized in that, The reference image quality gain data is the difference between the second image quality compensation data and the reference image quality compensation data.

8. A display device, characterized in that, include: LCD display panel; Image quality compensation data storage module, the image quality compensation data storage module is used to store preset baseline image quality compensation data and baseline image quality gain data; The display mode selection module is used to select a target display mode from a first display mode and a second display mode; A reference data acquisition module is used to acquire, based on the image data of the frame to be displayed on the liquid crystal display panel, the reference image quality compensation data corresponding to the image data of the frame to be displayed and the reference image quality gain data corresponding to the image data of the frame to be displayed from the image quality compensation data storage module; The image quality compensation module is used to calculate target image quality compensation data during the blank period between the end point of the current display frame image data and the start point of the frame display of the frame image data to be displayed, based on the target display mode, the reference image quality compensation data corresponding to the frame image data to be displayed, and the reference image quality gain data corresponding to the frame image data to be displayed, and to compensate the frame image data to be displayed based on the target image quality compensation data.

9. The display device according to claim 8, characterized in that, The display device further includes a target parameter selection module, which is used to select a target parameter from a first preset parameter and a second preset parameter according to the target display mode; The image quality compensation module is used to calculate the target image quality compensation data based on the target parameters corresponding to the target display mode, the reference image quality compensation data corresponding to the image data of the frame to be displayed, and the reference image quality gain data corresponding to the image data of the frame to be displayed.

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