Display panel and brightness compensation method thereof

Abstract

The embodiment of the invention discloses a display panel and a brightness compensation method of the display panel. The display panel comprises a plurality of pixels. In the first state, the data voltage received by the pixel in the to-be-compensated period is related to the panel temperature in the current compensation period; the panel temperature of the current compensation period is related to the environment temperature of the current compensation period, the display brightness of the current compensation period and the first temperature difference of the current compensation period, and the display brightness of the current compensation period is the average brightness of at least part of pictures displayed in the current compensation period; the first temperature difference of the current compensation period is the temperature difference between the panel temperature of the previous compensation period and the environment temperature of the current compensation period. When the display panel is in the first state, at least the environment temperature of the current compensation period, the display brightness of the current compensation period and the first temperature difference of the current compensation period are used for jointly representing the panel temperature of the current compensation period, and the compensation effect obtained based on the panel temperature is better.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a brightness compensation method of the display panel. Background Art

[0002] With the development of display technology, users have higher and higher requirements for the display effect of the display screen. There are many factors that affect the display effect of the display screen, among which the influence of temperature on the display effect of the display screen is more common. Affected by the ambient temperature, display time, display brightness, etc., the temperature of the display screen will change, and then the display effect will change. For example, the display color of the display screen may change. Summary of the invention

[0003] In view of this, embodiments of the present application provide a display panel and a brightness compensation method for the display panel.

[0004] In a first aspect, an embodiment of the present application provides a display panel, which includes multiple pixels; in a first state, the data voltage received by the pixel in the compensation period is related to the panel temperature of the current compensation period; the panel temperature of the current compensation period is related to the ambient temperature of the current compensation period, the display brightness of the current compensation period and the first temperature difference of the current compensation period, the display brightness of the current compensation period is the average brightness of at least part of the picture displayed in the current compensation period, and the first temperature difference of the current compensation period is the temperature difference between the panel temperature of the previous compensation period and the ambient temperature of the current compensation period.

[0005] In a second aspect, an embodiment of the present application provides a brightness compensation method for a display panel, comprising:

[0006] Get the ambient temperature of the current compensation cycle;

[0007] At least based on the ambient temperature of the current compensation cycle, the panel temperature of the current compensation cycle is obtained; the panel temperature of the current compensation cycle is related to the ambient temperature of the current compensation cycle, the display brightness of the current compensation cycle and the first temperature difference of the current compensation cycle, the display brightness of the current compensation cycle is the average brightness of at least part of the picture displayed in the current compensation cycle, and the first temperature difference of the current compensation cycle is the temperature difference between the panel temperature of the previous compensation cycle and the ambient temperature of the current compensation cycle;

[0008] The target data voltage is determined based on the panel temperature of the current compensation period.

[0009] In the embodiment of the present application, when the display panel is in the first state, at least the ambient temperature of the current compensation period, the display brightness of the current compensation period and the first temperature difference of the current compensation period are used to jointly characterize the panel temperature of the current compensation period. Compared with the prior art that only uses ambient temperature and other methods to characterize the panel temperature, the panel temperature corresponding to the display panel in the present application is more accurate. The data voltage determined after selecting the Gamma curve or LUT according to the panel temperature provided in the embodiment of the present application is equivalent to the data voltage obtained by compensation based on a more accurate panel temperature. Therefore, the problem of poor visual effect of the display panel caused by temperature difference in the display panel provided by the present application is better solved, and the display panel of the present application is better compensated. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0011] Figure 1 A schematic diagram of a display panel provided in an embodiment of the present application;

[0012] Figure 2 A timing diagram of a display panel provided in an embodiment of the present application;

[0013] Figure 3 A schematic diagram of the corresponding relationship between a display panel and a Gamma curve provided in an embodiment of the present application;

[0014] Figure 4 A schematic diagram of a display panel provided in an embodiment of the present application;

[0015] Figure 5 A schematic diagram of the corresponding relationship between a display panel and a Gamma curve provided in an embodiment of the present application;

[0016] Figure 6 A schematic diagram of a display panel provided in an embodiment of the present application;

[0017] Figure 7 A timing diagram of a display panel provided in an embodiment of the present application;

[0018] Figure 8 A timing diagram of a display panel provided in an embodiment of the present application;

[0019] Fig. 9 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0020] Fig.10 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0021] Fig.11 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0022] Fig.12 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0023] Fig.13 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0024] Fig.14 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0025] Fig.15 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0026] Fig.16 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0027] Fig.17 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0028] Fig.18 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0029] Fig.19 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0030] Fig. 20 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0031] Fig.21 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0032] Fig. 22 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0033] Fig.23 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0034] Fig.24A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0035] Fig.25 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0036] Fig.26 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application;

[0037] Fig. 27 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0039] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0040] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0041] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the description of this specification, it is necessary to understand that the words such as "substantially", "approximately", "approximately", "about", "roughly", "substantially" and the like described in the claims and embodiments of the present application refer to what can be generally recognized within a reasonable process operation range or tolerance range, rather than an exact value.

[0043] It should be understood that although the terms first, second, etc. may be used to describe parts, leads, etc. in the embodiments of the present application, these should not be limited to these terms. These terms are only used to distinguish parts, leads, etc. from each other. For example, without departing from the scope of the embodiments of the present application, the first part may also be referred to as the second part, and similarly, the second part may also be referred to as the first part. The applicant of this case has provided a solution to the problems existing in the prior art through careful and in-depth research.

[0044] Figure 1 A schematic diagram of a display panel provided in an embodiment of the present application.

[0045] like Figure 1 As shown, an embodiment of the present application provides a display panel 01, which includes a plurality of pixels 10. The pixel 10 is a unit for performing light-emitting display in the display panel 01. The light-emitting brightness and chromaticity of the pixel 10 are related to the data voltage received by it. When the display panel 01 displays a frame of an image, the data voltage received by the display panel 01 is determined by the image data of the display image. Usually, the image data is a digital signal, and the data voltage is an analog signal. Before the display panel 01 receives the data voltage corresponding to a frame of a display image to display the display image, the display driver module processes the image data corresponding to the display image to obtain the data voltage corresponding to the display image.

[0046] In addition, the display panel 01 will also consider other factors other than the image data in the process of processing the image data to obtain the data voltage, for example, it needs to consider the ambient temperature, etc., so that the obtained data voltage can adapt to different ambient temperatures, etc., so as to display a more accurate display picture and improve the visual effect of the display panel 01. For example, if the ambient temperature of the display panel 01 is significantly different when displaying two different display pictures, the Gamma curve may be called differently when determining the data voltages corresponding to the two different display pictures, that is, different display lookup tables (LUT) may be searched to obtain the compensated grayscales corresponding to the two different display pictures, and then the data voltages corresponding to the two different display pictures are obtained. It can be understood that the data voltage received by the display panel 01 is actually the compensated data voltage.

[0047] Figure 2 A timing diagram of a display panel provided in an embodiment of the present application.

[0048] like Figure 2As shown, the working process of the display panel 01 can be divided into multiple compensation cycles, and the display panel 01 displays multiple frames of display pictures in one compensation cycle. The Gamma curve to be called or the LUT to be searched when the data voltage required for displaying multiple frames of display pictures in the next compensation cycle can be determined in the first compensation cycle of two adjacent compensation cycles. For example, Figure 2 The diagram illustrates three compensation cycles during the operation of the display panel 01, and the display panel 01 displays six frames of display images in each compensation cycle, wherein the driving module determines a gamma curve or LUT corresponding to the second compensation cycle while driving the display panel 01 to display multiple frames of display images in the first compensation cycle. The gamma curve or LUT corresponding to the second compensation cycle refers to the gamma curve or LUT that can be called by the driving module to determine the data voltage required for the display panel 01 to display in the second compensation cycle, or the LUT that can be searched; the driving module determines a gamma curve or LUT corresponding to the third compensation cycle while driving the display panel 01 to display multiple frames of display images in the second compensation cycle. The gamma curve or LUT corresponding to the third compensation cycle refers to the gamma curve or LUT that can be called by the driving module to determine the data voltage required for the display panel 01 to display in the third compensation cycle, or the LUT that can be searched.

[0049] It should be noted that the Gamma curve or the LUT to be searched for the data voltage required for displaying multiple frames of display images in the next compensation cycle can also be determined in the previous compensation cycle of two non-adjacent compensation cycles. Figure 2 , in the first compensation cycle, the gamma curve or LUT corresponding to the third compensation cycle is determined. This application does not limit this, but for the sake of clarity, the following is an example of determining in the first compensation cycle of two adjacent compensation cycles that the gamma curve or LUT to be called for the data voltage required when the display panel 01 displays multiple frames of display images in the next compensation cycle.

[0050] In the embodiment of the present application, the display panel 01 includes at least a first state. In the first state, the data voltage received by the pixel 10 in the period to be compensated is related to the panel temperature in the current compensation period. The period to be compensated is a compensation period after the current compensation period, and the gamma curve or LUT to be searched for the data voltage required by the display panel 01 to display multiple frames of display images in the period to be compensated is determined in the current compensation period. For example, Figure 2As shown, when the first compensation cycle is used as the current compensation cycle, the second compensation cycle can be used as the cycle to be compensated; when the second compensation cycle is used as the current compensation cycle, the third compensation cycle can be used as the cycle to be compensated.

[0051] The panel temperature of the current compensation cycle is related to the ambient temperature of the current compensation cycle, the display brightness of the current compensation cycle, and the first temperature difference of the current compensation cycle. Therefore, when the display panel 01 is in the first state, the data voltage received by the pixel 10 in the period to be compensated is related to the ambient temperature, the display brightness, and the first temperature difference of the current compensation cycle. In other words, when the display panel 01 is in the first state, the data voltage received by the pixel 10 in the period to be compensated can be obtained by searching the corresponding LUT; and when selecting the corresponding LUT from multiple LUTs, at least the panel temperature of the current compensation cycle needs to be used as a basis, that is, at least the ambient temperature of the current compensation cycle, the display brightness of the current compensation cycle, and the first temperature difference of the current compensation cycle need to be used as a basis.

[0052] The ambient temperature of the current compensation cycle is the temperature of the environment in which the display panel 01 is located during the current compensation cycle, the display brightness of the current compensation cycle is the average brightness of at least part of the display image displayed during the current compensation cycle, and the first temperature difference of the current compensation cycle is the difference between the panel temperature of the previous compensation cycle and the ambient temperature of the current compensation cycle.

[0053] At least part of the display picture displayed in the current compensation period refers to at least part of the frame display pictures in the multiple frame display pictures displayed in the current compensation period, for example, Figure 2 As shown, assuming that the second compensation cycle is the current compensation cycle, at least part of the display image displayed in the current compensation cycle may refer to all the frames of the 6 frames of the display image displayed in the current compensation cycle, or may be the first 3 frames of the display image or the first 4 frames of the 6 frames of the display image displayed in the current compensation cycle.

[0054] In some embodiments, the current compensation cycle and the corresponding period to be compensated are performed successively, and at least part of the display screen displayed in the current compensation cycle can be the first few frames of the display screen in the multiple frames of the display screen displayed in the current compensation cycle, so that the driving module obtains the display brightness of the current compensation cycle at a relatively early time in the current compensation cycle, and then the panel temperature of the current compensation cycle can be calculated before the period to be compensated begins. The display brightness of the current compensation cycle can affect the temperature of the display panel 01. Generally, the higher the display brightness, the more heat the display panel 01 generates, and the higher the temperature of the display panel 01; the lower the display brightness, the less heat the display panel 01 generates, and the lower the temperature of the display panel 01. Therefore, the display brightness of the current compensation cycle can reflect the heat generation of the display panel 01 when the display is luminous and displayed in the current compensation cycle.

[0055] The difference between the panel temperature of the previous compensation cycle and the ambient temperature of the current compensation cycle can reflect the heat dissipation of the display panel 01 in the current compensation cycle, and the first temperature difference of the current compensation cycle can also affect the temperature of the display panel 01. Generally, when the heat dissipation of the display panel 01 is greater, the temperature of the display panel 01 is smaller, that is, the smaller the first temperature difference is, the smaller the temperature of the display panel 01 is; when the heat dissipation of the display panel 01 is less, the temperature of the display panel 01 is greater, that is, the greater the first temperature difference is, the greater the temperature of the display panel 01 is.

[0056] by Figure 2 For example, the current compensation cycle may be the third compensation cycle and the previous compensation cycle may be the second compensation cycle. Then, just as the panel temperature corresponding to the third compensation cycle can be determined in the second compensation cycle, the panel temperature corresponding to the second compensation cycle can also be determined in the first compensation cycle. Then, when the third compensation cycle is the current compensation cycle, the first temperature difference of the current compensation cycle is the difference between the panel temperature of the second compensation cycle and the current ambient temperature.

[0057] Since the time interval between the current compensation cycle and the cycle to be compensated is not large, the influence of the ambient temperature of the current compensation cycle on the panel temperature can basically reflect the influence of the temperature of the environment in which the display panel 01 is located during the cycle to be compensated on the panel temperature, the influence of the display brightness of the current compensation cycle on the panel temperature can basically reflect the influence of the luminous heat generation of the display panel 01 during the cycle to be compensated on the panel temperature, and the influence of the first temperature difference of the current compensation cycle on the panel temperature can basically reflect the influence of the heat dissipation of the display panel 01 during the cycle to be compensated on the panel temperature.

[0058] In the embodiment of the present application, when the display panel 01 is in the first state, at least the ambient temperature of the current compensation period, the display brightness of the current compensation period and the first temperature difference of the current compensation period are used to jointly characterize the panel temperature of the current compensation period. Compared with the prior art that only uses ambient temperature and other methods to characterize the panel temperature, the panel temperature corresponding to the display panel 01 in the present application is more accurate. The data voltage determined after selecting the Gamma curve or LUT according to the panel temperature provided in the embodiment of the present application is equivalent to the data voltage obtained by compensation based on a more accurate panel temperature. Therefore, the problem of poor visual effect of the display panel 01 caused by temperature difference in the display panel 01 provided in the present application is better solved, and the display panel 01 of the present application is better compensated.

[0059] In addition, the display panel 01 of the embodiment of the present application can be used for vehicle display, for example, the display panel 01 can be integrated on a windshield or in a rearview mirror. In order to increase the light transmittance of the display panel 01, it is not appropriate to set a temperature sensor in the display panel 01, so that the temperature of the display panel 01 cannot be obtained. Therefore, the embodiment of the present application can be used to obtain the compensated data voltage according to the panel temperature of the display panel 01.

[0060] In one embodiment of the present application, the compensated data voltage received by the display panel 01 in a compensation period can be determined by calling the same Gamma curve or searching the same LUT, that is, the compensated data voltage received by the pixels 10 in different areas of the display panel 01 in the same compensation period can be determined by calling the same Gamma curve or searching the same LUT.

[0061] In this embodiment, when the display panel 01 is in the first state, the panel temperature in the current compensation cycle satisfies:

[0062] T 0 =α*L 0-1 +β*(T 0-1 -T E )+γ*T E

[0063] Among them, T 0 is the panel temperature of the current compensation cycle, T 0-1 is the panel temperature of the previous compensation cycle, T E is the ambient temperature of the current compensation cycle, L 0-1 is the display brightness of the current compensation cycle, and α, β and γ are weight coefficients.

[0064] That is, the panel temperature of the current compensation cycle is obtained by weighting and summing the display brightness of the display panel 01 in the current compensation cycle, the difference between the panel temperature of the previous compensation cycle and the ambient temperature of the current compensation cycle, and the ambient temperature of the current compensation cycle. In addition, the panel temperature in this embodiment refers to the overall temperature of the display panel 01 that satisfies the above formula.

[0065] Figure 3 A schematic diagram of the corresponding relationship between a display panel 01 and a Gamma curve provided in an embodiment of the present application.

[0066] like Figure 3As shown, the display panel 01 can call the Gamma1 curve, the Gamma2 curve, ..., the GammaK curve, and correspondingly, the register of the driving module can store K LUTs, LUT1, LUT2, ..., LUTK. The compensated data voltage received by the display panel 01 in the compensation cycle is determined by searching which LUT, which can be selected according to the panel temperature of the current compensation cycle.

[0067] Combination Figure 2 and Figure 3 When the second compensation cycle is the current compensation cycle and the third compensation cycle is the pending compensation cycle, the panel temperature T corresponding to the second compensation cycle is 2 That is the panel temperature T of the current compensation cycle 0 At this time, according to the panel temperature T corresponding to the second compensation period 2 Select the corresponding LUT3; when the working phase of the display panel 01 enters the third compensation cycle, the data voltages received by the display panel 01 are all compensated data voltages DT determined by searching the LUT3.

[0068] In a technical solution corresponding to this embodiment, α<β<γ.

[0069] Among them, γ can be 1.

[0070] Figure 4 A schematic diagram of a display panel provided in an embodiment of the present application.

[0071] In one embodiment of the present application, Figure 4 As shown, the display panel 01 includes N preset areas 100, where N is an integer greater than or equal to 2, and each preset area 100 includes a plurality of pixels 10, for example, Figure 4As shown, the display panel 01 includes 4 preset areas 100, that is, N=4. In order to improve the display uniformity of different areas in the display panel 01, the display area of ​​the display panel 01 can be divided into multiple preset areas 100; and the Gamma curve corresponding to each preset area 100 can be selected according to the temperature of each preset area 100 itself, that is, the compensated data voltages received by the pixels 10 in the preset areas 100 can be obtained by searching different display lookup tables (LUTs) according to the temperature of the preset area 100. When converting the image data of the screen to be displayed into the data voltage that can be read by the display panel 01, the LUT required to be searched when converting the image data corresponding to the preset area 100 into the compensated data voltage can be determined according to the actual temperature of each preset area 100. When the temperature difference between different preset areas 100 is large and belongs to different temperature ranges, the compensated data voltages received by the pixels 10 in the different preset areas 100 can be obtained by searching different LUTs. Especially in a large-size display panel 01, the display uniformity of the display panel 01 can be effectively improved by dividing the display panel 01 into a plurality of preset areas 100. Figure 4 As shown, the compensated data voltages DT respectively received in the four preset areas 101 , 102 , 103 , and 104 included in the display panel 01 are determined by searching LUT1 , LUT2 , LUT3 , and LUT4 , respectively.

[0072] In this embodiment, in the first state, the data voltage received by the pixel 10 in the period to be compensated is related to the panel temperature in the current compensation period, including:

[0073] In the first state, the data voltage received by the pixel 10 in the i-th preset area 100 in the period to be compensated is related to the temperature of the preset area 100 in the i-th preset area 100 in the current compensation period, 1≤i≤N.

[0074] When the display panel 01 includes multiple preset areas 100, the temperature of the preset area 100 of the i-th preset area 100 in the current compensation cycle is the panel temperature of the current compensation cycle corresponding to the i-th preset area 100, that is, the panel temperature of the current compensation cycle actually includes the temperatures of the preset areas 100 corresponding to the N preset areas 100 in the current compensation cycle. For example, Figure 4 As shown, the display panel 01 includes four preset areas 100, and the panel temperature actually includes the temperatures of the preset areas 100 respectively corresponding to the four preset areas 100; it can also be understood that, for the four preset areas 100, the panel temperature at the position corresponding to the preset area 100 in the display panel 01 is obtained.

[0075] The temperature of the preset area 100 of the i-th preset area 100 in the current compensation cycle is related to the ambient temperature of the current compensation cycle, the display brightness of the i-th preset area 100 in the current compensation cycle, and the first temperature difference of the i-th preset area 100 in the current compensation cycle. That is, when the display panel 01 is in the first state, the data voltage received by the pixel 10 in the i-th preset area 100 in the period to be compensated can be obtained by searching the corresponding LUT; and when selecting the corresponding LUT from multiple LUTs, at least the temperature of the preset area 100 of the i-th preset area 100 in the current compensation cycle needs to be used as a basis, that is, at least the ambient temperature of the current compensation cycle, the display brightness of the i-th preset area 100 in the current compensation cycle, and the first temperature difference of the i-th preset area 100 in the current compensation cycle need to be used as a basis.

[0076] The display brightness of the i-th preset area 100 in the current compensation cycle is the average brightness of at least part of the display image displayed in the current compensation cycle in the i-th preset area 100. The display brightness of the preset area 100 in the current compensation cycle can affect the temperature of the preset area 100. Generally, the higher the display brightness of the preset area 100, the more heat it generates, and the higher the temperature of the preset area 100; the lower the display brightness of the preset area 100, the less heat it generates, and the lower the temperature of the preset area 100. Therefore, the display brightness of the i-th preset area 100 in the current compensation cycle can reflect the heat generation of the i-th preset area 100 when the luminous display is performed in the current compensation cycle.

[0077] The first temperature difference of the i-th preset area 100 in the current compensation cycle is the difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature in the current compensation cycle. The difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature in the current compensation cycle can reflect the heat dissipation of the preset area 100 in the current compensation cycle, so the first temperature difference of the i-th preset area 100 in the current compensation cycle can also affect the temperature of the i-th preset area 100. Generally, the more the preset area 100 dissipates heat, the smaller the temperature of the preset area 100, that is, the smaller the first temperature difference of the preset area 100, the smaller the temperature of the preset area 100; the less the preset area 100 dissipates heat, the greater the temperature of the preset area 100, that is, the greater the first temperature difference of the preset area 100, the greater the temperature of the preset area 100.

[0078] In the embodiment of the present application, when the display panel 01 is in the first state, the data voltage received by the pixels 10 in the preset area 100 in the period to be compensated is related to the temperature of the preset area 100 in the current compensation period. That is to say, at least the ambient temperature of the current compensation period, the display brightness of the preset area 100 in the current compensation period and the first temperature difference of the preset area 100 in the current compensation period are used to jointly characterize the temperature of the preset area 100 in the current compensation period, and the preset area 100 temperatures corresponding to the preset areas 100 in the display panel 01 provided in the present application are more accurate. The data voltage determined after selecting the Gamma curve or LUT according to the preset area 100 provided in the embodiment of the present application is equivalent to the data voltage obtained by compensation based on the more accurate temperature of the preset area 100. Therefore, the problem of poor visual effect of the display panel 01 caused by the temperature difference of the display panel 01 provided in the present application is better solved, and the display panel 01 of the present application is better compensated.

[0079] In a technical solution corresponding to this embodiment, when the display panel 01 is in the first state, the temperature of the i-th preset area 100 in the preset area 100 of the current compensation cycle satisfies:

[0080] T 0 (i) = α * L 0-1 (i)+β*(T 0-1 (i)-T E )+γ*T E

[0081] Among them, T 0 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the current compensation cycle, T 0-1 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the previous compensation cycle, T E is the current compensated ambient temperature, L 0-1 (i) is the display brightness of the i-th preset area 100 in the current compensation cycle, and α, β and γ are weight coefficients.

[0082] That is, the temperature of the preset area 100 in the current compensation cycle is obtained by weighted summing the display brightness of the preset area 100 in the current compensation cycle, the difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle, and the ambient temperature of the current compensation cycle. In addition, the temperatures of the preset areas 100 corresponding to each preset area 100 in the embodiment of the present application can be determined by the above formula.

[0083] Figure 5 A schematic diagram of the corresponding relationship between a display panel and a Gamma curve provided in an embodiment of the present application.

[0084] like Figure 5 As shown, each preset area 100 in the display panel 01 can call the Gamma1 curve, the Gamma2 curve, ..., the GammaK curve, and correspondingly, the register of the driving module can store K LUTs, LUT1, LUT2, ..., LUTK. The compensated data voltage received by the preset area 100 in the compensation cycle is determined by looking up which LUT, and can be selected according to the temperature of the preset area 100 in the current compensation cycle.

[0085] Combination Figure 2 and Figure 5 When the second compensation cycle is the current compensation cycle and the third compensation cycle is the pending compensation cycle, the preset area 1002 and the preset area 1003 respectively correspond to the preset area 100 temperature T in the second compensation cycle. 22 and T 23 That is, the preset area 1002 and the preset area 1003 are respectively the preset area 100 temperatures T in the current compensation cycle. 0 (i) At this time, the temperature T of the preset area 1002 corresponding to the preset area 100 in the second compensation cycle 22 Select the corresponding LUT3, and according to the preset area 1003, the temperature T of the preset area 100 corresponding to the second compensation cycle 23 Select the corresponding LUT4; when the working stage of the display panel 01 enters the third compensation cycle, the data voltages received by the preset area 1002 are all compensated data voltages DT2 determined by searching LUT3, and the data voltages received by the preset area 1003 are all compensated data voltages DT3 determined by searching LUT4.

[0086] In a technical solution corresponding to this embodiment, α<β<γ.

[0087] Among them, γ can be 1.

[0088] In a technical solution corresponding to this embodiment, the temperature of a preset area 100 may also be related to the temperature of the preset areas 100 around it. Generally, when the temperature of other preset areas 100 located around a preset area 100 is higher, these other preset areas 100 may transfer heat to the preset area 100, resulting in an increase in the temperature of the preset area 100. Therefore, the temperature of a preset area 100 in the current compensation cycle of a preset area 100 may also be related to the temperature of the adjacent preset areas 100 in the current compensation cycle.

[0089] When the display panel 01 is in the first state, the temperature of the preset area 100 of the i-th preset area 100 in the current compensation cycle is also related to the second temperature difference of the first adjacent preset area 100 in the current compensation cycle. Therefore, the temperature of the preset area 100 of the i-th preset area 100 in the current compensation cycle is related to the ambient temperature of the current compensation cycle, the display brightness of the i-th preset area 100 in the current compensation cycle, the first temperature difference of the i-th preset area 100 in the current compensation cycle, and the second temperature difference of the first adjacent preset area 100 corresponding to the i-th preset area 100 in the current compensation cycle. That is to say, when the display panel 01 is in the first state, the data voltage received by the pixel 10 in the i-th preset area 100 in the period to be compensated can be obtained by searching the corresponding LUT; and when selecting the corresponding LUT from multiple LUTs, it is necessary to at least use the temperature of the preset area 100 of the i-th preset area 100 in the current compensation period as a basis, that is, it is necessary to use at least the ambient temperature of the current compensation period, the display brightness of the i-th preset area 100 in the current compensation period, the first temperature difference of the i-th preset area 100 in the current compensation period, and the second temperature difference of the first adjacent preset area 100 corresponding to the i-th preset area 100 in the current compensation period as a basis.

[0090] Figure 6 A schematic diagram of a display panel provided in an embodiment of the present application.

[0091] It can be understood that the temperature of other preset areas 100 that are farther away from a preset area 100 has a smaller effect on the temperature of the preset area 100. Therefore, this solution can consider the effect of other preset areas 100 that are less than the preset distance from the preset area 100 on the temperature of the preset area 100. Therefore, the distance between the first adjacent preset area 100 and the i-th preset area 100 in the embodiment of the present application is less than the preset distance. The preset distance can be characterized by the width of pixels 10, for example, the preset distance can be 2 pixels 10 width, 3 pixels 10 width, etc.

[0092] The i-th preset area 100 corresponds to m first adjacent preset areas 100, where m is a positive integer greater than or equal to 2. Figure 6As shown, the display panel 01 includes 5*5 preset areas 100. If i is equal to 1 and the preset distance is 2 pixels 10 width, the first preset area 100 corresponds to 3 first adjacent preset areas 100, namely the 2nd preset area 100, the 6th preset area 100 and the 7th preset area 100; if i is equal to 13 and the preset distance is 2 pixels 10 width, the 13th preset area 100 corresponds to 8 first adjacent preset areas 100, namely the 7th preset area 100, the 8th preset area 100, the 9th preset area 100, the 12th preset area 100, the 14th preset area 100, the 17th preset area 100, the 18th preset area 100, and the 19th preset area 100.

[0093] The second temperature difference of the current compensation cycle is the temperature difference between the temperature of the preset area 100 of the first adjacent preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle. It can be understood that if the i-th preset area 100 obtains the temperature of the preset area 100 in the current compensation cycle, then the first adjacent preset area 100 corresponding to the i-th preset area 100 also basically obtains the temperature of the preset area 100 in the current compensation cycle. Therefore, if the temperature of the preset area 100 of the i-th preset area 100 in the current compensation cycle is related to the temperature of the preset area 100 of the first adjacent preset area 100 in the current compensation cycle, it will be difficult to obtain the temperature of the preset area 100 of the i-th preset area 100 in the current compensation cycle. In the present technical solution, when obtaining the temperature of the preset area 100 of the i-th preset area 100, the second temperature difference of the first adjacent preset area 100 in the current compensation cycle is used to characterize the temperature of the first adjacent preset area 100 in the current compensation cycle, so that the temperature is relatively accurate and convenient to obtain in time in the current compensation cycle.

[0094] In one implementation, the temperature of the preset area 100 in the i-th preset area 100 in the current compensation cycle satisfies:

[0095]

[0096] Among them, T 0 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the current compensation cycle, T 0-1 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the previous compensation cycle, T 0-1 (j) is the temperature of the jth first adjacent preset area 100 in the previous compensation cycle, T E is the ambient temperature of the current compensation cycle, L 0-1 (i) is the display brightness of the i-th preset area 100 in the current compensation cycle, α, β, γ and δ 1 is the weight coefficient, 1≤j≤m.

[0097] That is, the temperature of the preset area 100 in the current compensation cycle is obtained by weighting and summing the display brightness of the preset area 100 in the current compensation cycle, the difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle, the ambient temperature of the current compensation cycle, and the difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle of each first adjacent preset area 100. In addition, the temperature of the preset area 100 corresponding to each preset area 100 in the embodiment of the present application can be determined by the above formula.

[0098] In a technical solution corresponding to this embodiment, α<β<γ<δ 1 .

[0099] Among them, γ can be 1.

[0100] In one implementation, the temperature of the preset area 100 in the i-th preset area 100 in the current compensation cycle satisfies:

[0101] T 0 (i) = a*L 0-1 (i)+β*(T 0-1 (i)T E )+γ*T E +δ 2 *(T 0m -T E )

[0102] Among them, T 0 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the current compensation cycle, T 0-1 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the previous compensation cycle, T 0m is the average temperature of the preset area 100 of the m first adjacent preset areas 100 in the previous compensation cycle, T E is the ambient temperature of the current compensation cycle, L 0-1 (i) is the display brightness of the i-th preset area 100 in the current compensation cycle, α, β, γ and δ 2 is the weight coefficient, 1≤j≤m.

[0103] That is, the temperature of the preset area 100 in the current compensation cycle is obtained by weighting and summing the display brightness of the preset area 100 in the current compensation cycle, the difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle, the ambient temperature of the current compensation cycle, and the difference between the average value of the temperature of the preset area 100 in the previous compensation cycle of the m first adjacent preset areas 100 and the ambient temperature of the current compensation cycle. In addition, the temperatures of the preset areas 100 corresponding to each preset area 100 in the embodiment of the present application can be determined by the above formula.

[0104] In a technical solution corresponding to this embodiment, α<β<γ<δ 2 .

[0105] Among them, γ can be 1.

[0106] In a technical solution corresponding to the present embodiment, in the first state, the temperature of the preset area 100 of the i-th preset area 100 in the current compensation cycle is also related to the second temperature difference of the first adjacent preset area 100 in the current compensation cycle and the third temperature difference of the second adjacent preset area 100 in the current compensation cycle. Among them, the distances between the first adjacent preset area 100 and the second adjacent preset area 100 and the i-th preset area 100 are both less than the preset distance, and the distance between the first adjacent preset area 100 and the i-th preset area 100 is less than the distance between the second adjacent area and the i-th preset area 100.

[0107] The i-th preset area 100 corresponds to m first adjacent preset areas 100 and n second adjacent preset areas 100, where m is a positive integer greater than or equal to 2 and n is a positive integer greater than or equal to 2. For example, Figure 6As shown, the display panel 01 includes 5*5 preset areas 100. If i is equal to 13 and the preset distance is 3 pixels 10 in width, the 13th preset area 100 corresponds to 8 first adjacent preset areas 100, namely the 7th preset area 100, the 8th preset area 100, the 9th preset area 100, the 12th preset area 100, the 14th preset area 100, the 17th preset area 100, the 18th preset area 100, and the 19th preset area 100; and the 13th preset area 100 corresponds to 15 second adjacent preset areas. 100, respectively, the 1st preset area 100, the 2nd preset area 100, the 3rd preset area 100, the 4th preset area 100, the 5th preset area 100, the 6th preset area 100, the 10th preset area 100, the 11th preset area 100, the 15th preset area 100, the 16th preset area 100, the 20th preset area 100, the 21st preset area 100, the 22nd preset area 100, the 23rd preset area 100, the 24th preset area 100, and the 25th preset area 100.

[0108] The second temperature difference of the current compensation cycle is the temperature difference between the temperature of the preset area 100 of the first adjacent preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle, and the third temperature difference of the current compensation cycle is the temperature difference between the temperature of the preset area 100 of the second adjacent preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle. In the present technical solution, when obtaining the temperature of the preset area 100 of the i-th preset area 100, the second temperature difference of the first adjacent preset area 100 in the current compensation cycle is used to characterize the temperature of the first adjacent preset area 100 in the current compensation cycle, and the third temperature difference of the second adjacent preset area 100 in the current compensation cycle is used to characterize the temperature of the second adjacent preset area 100 in the current compensation cycle, so that these temperatures are relatively accurate and convenient to obtain in time in the current compensation cycle.

[0109] Therefore, the temperature of the preset area 100 in the current compensation cycle is related to the ambient temperature of the current compensation cycle, the display brightness of the i-th preset area 100 in the current compensation cycle, the first temperature difference of the i-th preset area 100 in the current compensation cycle, the second temperature difference of the first adjacent preset area 100 corresponding to the i-th preset area 100 in the current compensation cycle, and the third temperature difference of the first adjacent preset area 100 corresponding to the i-th preset area 100 in the current compensation cycle. That is to say, when the display panel 01 is in the first state, the data voltage received by the pixel 10 in the i-th preset area 100 in the period to be compensated can be obtained by searching the corresponding LUT; and when selecting the corresponding LUT from multiple LUTs, it is necessary to at least use the temperature of the preset area 100 of the i-th preset area 100 in the current compensation period as a basis, that is, it is necessary to use at least the ambient temperature of the current compensation period, the display brightness of the i-th preset area 100 in the current compensation period, the first temperature difference of the i-th preset area 100 in the current compensation period, the second temperature difference of the first adjacent preset area 100 corresponding to the i-th preset area 100 in the current compensation period, and the third temperature difference of the second adjacent preset area 100 corresponding to the i-th preset area 100 in the current compensation period as a basis.

[0110] It can be understood that within a preset distance of a preset area 100, the temperature of the adjacent preset area 100 closer to the preset area 100 has a greater influence on the temperature of the preset area 100 of the preset area 100 in the current compensation cycle, and the temperature of the adjacent preset area 100 farther away from the preset area 100 has a smaller influence on the temperature of the preset area 100 of the preset area 100 in the current compensation cycle. Therefore, when calculating the temperature of the preset area 100 of the i-th preset area 100 in the current compensation cycle, the weights of the second temperature difference of the first adjacent preset area 100 in the current compensation cycle and the third temperature difference of the second adjacent preset area 100 in the current compensation cycle can be different.

[0111] In one implementation, the temperature of the preset area 100 in the i-th preset area 100 in the current compensation cycle satisfies:

[0112]

[0113] Among them, T 0 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the current compensation cycle, T 0-1 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the previous compensation cycle, T 0-1 (j) is the temperature of the jth first adjacent preset area 100 in the previous compensation cycle, T 0-1(k) is the temperature of the kth preset area 100 in the previous compensation cycle, T E is the ambient temperature of the current compensation cycle, L 0-1 (i) is the display brightness of the i-th preset area 100 in the current compensation cycle, α, β, γ, δ 3 and ε 1 is the weight coefficient, 1≤j≤m, 1≤k≤n.

[0114] That is, the temperature of the preset area 100 in the current compensation cycle is obtained by weighting and summing the display brightness of the preset area 100 in the current compensation cycle, the difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle, the ambient temperature of the current compensation cycle, the difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle of each first adjacent preset area 100, and the difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle of each second adjacent preset area 100. In addition, the temperature of the preset area 100 corresponding to each preset area 100 in the embodiment of the present application can be determined by the above formula.

[0115] In a technical solution corresponding to this embodiment, α<β<γ<δ 3 <ε 1 .

[0116] Among them, γ can be 1.

[0117] In one implementation, the temperature of the preset area 100 in the i-th preset area 100 in the current compensation cycle satisfies:

[0118]

[0119] Among them, T 0 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the current compensation cycle, T 0-1 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the previous compensation cycle, T 0-1 (j) is the temperature of the jth first adjacent preset area 100 in the previous compensation cycle, T 0n is the average temperature of the n first adjacent preset areas 100 in the preset area 100 in the previous compensation cycle, T E is the ambient temperature of the current compensation cycle, L 0-1 (i) is the display brightness of the i-th preset area 100 in the current compensation cycle, α, β, γ, δ 4 and ε 2 is the weight coefficient, 1≤j≤m, 1≤k≤n.

[0120] That is, the temperature of the preset area 100 in the current compensation cycle is obtained by weighting and summing the display brightness of the preset area 100 in the current compensation cycle, the difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle, the ambient temperature of the current compensation cycle, the difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle of each first adjacent preset area 100, and the difference between the average value of the temperature of the preset area 100 in the previous compensation cycle of n second adjacent preset areas 100 and the ambient temperature of the current compensation cycle. In addition, the temperature of the preset area 100 corresponding to each preset area 100 in the embodiment of the present application can be determined by the above formula.

[0121] In a technical solution corresponding to this embodiment, α<β<γ<δ 4 <ε 2 .

[0122] Among them, γ can be 1.

[0123] In one implementation, the temperature of the preset area 100 in the i-th preset area 100 in the current compensation cycle satisfies:

[0124] T 0 (i) = α * L 0-1 (i)+β*(T 0-1 (i)-T E )+γ*T E +δ 5 *(T 0m -T E )+ε 3 *(T 0n -T E )

[0125] Among them, T 0 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the current compensation cycle, T 0-1 (i) is the temperature of the preset area 100 in the i-th preset area 100 in the previous compensation cycle, T 0m is the average temperature of the preset area 100 of the m first adjacent preset areas 100 in the previous compensation cycle, T 0n is the average temperature of the n first adjacent preset areas 100 in the preset area 100 in the previous compensation cycle, T E is the ambient temperature of the current compensation cycle, L 0-1 (i) is the display brightness of the i-th preset area 100 in the current compensation cycle, α, β, γ, δ 5 and ε 3 is the weight coefficient, 1≤j≤m, 1≤k≤n.

[0126] That is, the temperature of the preset area 100 in the current compensation cycle is obtained by weighting and summing the display brightness of the preset area 100 in the current compensation cycle, the difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle, the ambient temperature of the current compensation cycle, the difference between the average value of the temperature of the preset area 100 in the previous compensation cycle of the m first adjacent preset areas 100 and the ambient temperature of the current compensation cycle, and the difference between the average value of the temperature of the preset area 100 in the previous compensation cycle of the n second adjacent preset areas 100 and the ambient temperature of the current compensation cycle. In addition, the temperatures of the preset areas 100 corresponding to each preset area 100 in the embodiment of the present application can be determined by the above formula.

[0127] In a technical solution corresponding to this embodiment, α<β<γ<δ 5 <ε 3 .

[0128] Among them, γ can be 1.

[0129] In some embodiments, when the display panel 01 is in the second state, the temperature of the display panel 01 does not change much, and the data voltage received in each compensation period when the display panel 01 is in the second state can be independent of the panel temperature involved in any of the above embodiments, so as to reduce the computing power of the driving module. Among them, the ambient temperature when the display panel 01 is in the first state is greater than or equal to the preset value, and the ambient temperature when the display panel 01 is in the second state is less than the preset value, and the preset value can be selected according to the heat generation of the display panel 01.

[0130] The present application scheme can be directed to the passive heat dissipation of the display panel 01, that is, the heat generated by the display panel 01 is dissipated to the environment in which it is located. When the ambient temperature is lower than a certain value, the display panel 01 can dissipate heat quickly. For example, the preset value can be 5 degrees Celsius. When the ambient temperature is stable and greater than or equal to 5 degrees Celsius, the display panel 01 cannot dissipate heat to the environment in a timely and rapid manner, and the display panel 01 switches to the first state; when the ambient temperature is stable and less than 5 degrees Celsius, the display panel 01 can dissipate heat to the environment in a timely and rapid manner, and the display panel 01 therefore switches to the second state. In addition, the preset value can also be 0 degrees Celsius, 10 degrees Celsius, etc.

[0131] In a technical solution, in the second state, the data voltage received by the pixel 10 in the period to be compensated is independent of the panel temperature in the current compensation period, so the computing power of the driving module driving the display panel 01 to emit light and display is reduced in the second state.

[0132] In a technical solution, in the second state, the data voltage received by the pixel 10 in the period to be compensated is related to the display brightness of the current compensation period, and the data voltage received by the pixel 10 in the period to be compensated is independent of the ambient temperature of the current compensation period and the first temperature difference of the current compensation period. That is, the possible temperature of the display panel 01 in the period to be compensated is characterized only according to the display brightness of the current compensation period, so as to determine the LUT corresponding to the period to be compensated.

[0133] Figure 7 A timing diagram of a display panel provided in an embodiment of the present application.

[0134] In one embodiment, Figure 7 As shown, the display mode of the display panel 01 includes a first mode and a second mode. The refresh frequency of the display panel 01 in the first mode is greater than the refresh frequency in the second mode, that is, the time for the display panel 01 to display a frame of display image in the first mode is less than the time for displaying a frame of display image in the second mode.

[0135] In one technical solution, Figure 7 As shown, the number of frames of the display picture displayed by the display panel 01 in a compensation cycle in the first mode is less than or equal to the number of frames of the display picture displayed by the display panel 01 in a compensation cycle in the second mode. Therefore, when the display panel 01 is in the first mode and in the first state, the time for obtaining the updated panel temperature is less than the time for obtaining the updated panel temperature when the display panel 01 is in the second mode and in the first state. The higher the refresh frequency of the display panel 01, the less timely the heat generated by the light-emitting display is dissipated. Therefore, shortening the time for obtaining the updated panel temperature can increase the display uniformity of the display panel 01.

[0136] Figure 8 A timing diagram of a display panel provided in an embodiment of the present application.

[0137] In one technical solution, Figure 8 As shown, the time of one compensation cycle of the display panel 01 in the first mode is substantially equal to the time of one compensation cycle in the second mode, and the computing power of the driving module can be appropriately reduced.

[0138] Fig. 9 A brightness compensation method for a display panel is provided in an embodiment of the present application.

[0139] An embodiment of the present application further provides a brightness compensation method for a display panel, which is mainly used to obtain a compensated data voltage, that is, to obtain a target data voltage.

[0140] like Fig. 9 As shown, the brightness compensation method of the display panel provided in the embodiment of the present application includes:

[0141] S1: Get the ambient temperature of the current compensation cycle;

[0142] S7: obtaining a panel temperature of the current compensation period based at least on the ambient temperature of the current compensation period;

[0143] S8: Determine a target data voltage based on the panel temperature of the current compensation period.

[0144] The panel temperature of the current compensation cycle is related to the ambient temperature of the current compensation cycle, the display brightness of the current compensation cycle, and the first temperature difference of the current compensation cycle. The display brightness of the current compensation cycle is the average brightness of at least a portion of the screen displayed in the current compensation cycle. The first temperature difference of the current compensation cycle is the temperature difference between the panel temperature of the previous compensation cycle and the ambient temperature of the current compensation cycle. The ambient temperature of the current compensation cycle, the display brightness of the current compensation cycle, and the first temperature difference of the current compensation cycle have been described in the above embodiments and will not be repeated here.

[0145] In one embodiment, based on at least the ambient temperature of the current compensation period, the panel temperature of the current compensation period is obtained, which can be specifically obtained according to the formula T 0 =α*L 0-1 +β*(T 0-1 -T E )+γ*T E The panel temperature of the current compensation period is obtained by calculation. This formula has been explained in the above embodiment and will not be repeated here.

[0146] Specifically, the ambient temperature of the current compensation period can be obtained by sensing the ambient temperature using a temperature sensor disposed outside the display panel 01 , and a driving module of the display panel 01 receives the ambient temperature sensed by the temperature sensor.

[0147] In addition, the target data voltage is determined based on the panel temperature of the current compensation cycle, a LUT corresponding to the panel temperature of the current compensation cycle is selected based on the panel temperature of the current compensation cycle, and a compensation grayscale corresponding to the image data is obtained in the LUT corresponding to the panel temperature of the current compensation cycle and the target data voltage corresponding to the compensation grayscale is further determined, or, a target data voltage corresponding to the image data is obtained in the LUT corresponding to the panel temperature of the current compensation cycle.

[0148] In addition, the brightness compensation method of the display panel provided in the embodiment of the present application can be used to drive the display panel 01 provided in the above embodiment.

[0149] Fig.10 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0150] In one embodiment of the present application, Figure 2 As shown, the display panel 01 is used to display multiple frames of display images in one compensation cycle, for example, Figure 2 As shown, the display panel 01 displays 6 frames of display pictures in one compensation cycle. When the display panel 01 is used to display multiple frames of display pictures in one compensation cycle, as shown in FIG. Fig.10 As shown, get the ambient temperature of the current compensation cycle, including:

[0151] S10: Acquire the ambient temperature of the current compensation cycle in the first stage of the current compensation cycle.

[0152] The display panel 01 also displays at least one frame of display image in the second stage of the current compensation cycle. The first stage of the current compensation cycle is located before the second stage of the current compensation cycle, that is, the ambient temperature of the current compensation cycle is obtained relatively early in the period to be compensated, and then the panel temperature of the current compensation cycle can be calculated before the period to be compensated begins. Figure 2 The first stage may be a period of time during which the display panel 01 displays the first three or four frames in the current compensation cycle.

[0153] Fig.11 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0154] When the display panel 01 is used to display multiple frames of display images in one compensation period, the brightness compensation method provided in the embodiment of the present application further includes:

[0155] S3: in the third stage of the current compensation cycle, obtaining the average brightness of at least a portion of the display picture displayed before the third stage in the current compensation cycle to obtain the display brightness of the current compensation cycle.

[0156] At this time, based at least on the ambient temperature of the current compensation cycle, the panel temperature of the current compensation cycle is acquired, and the target data voltage is determined based on the panel temperature of the current compensation cycle, including:

[0157] S71: Obtaining the panel temperature of the current compensation period based at least on the ambient temperature of the current compensation period and the display brightness of the current compensation period.

[0158] Among them, at least part of the display picture displayed before the third stage refers to at least part of the frame display pictures of the multiple frame display pictures displayed before the third stage of the current compensation cycle. For example, the third stage is the time period when the fourth frame display picture is displayed in the current compensation cycle, and the average brightness of at least part of the display picture displayed before the third stage refers to the average brightness of the first frame, the second frame and the third frame display picture in the current compensation cycle; that is, the average brightness of the first frame, the second frame and the third frame display picture in the current compensation cycle is obtained during the time period when the fourth frame display picture is displayed in the current compensation cycle.

[0159] In addition, the display panel 01 also displays at least one frame of display image in the fourth stage of the current compensation cycle. The third stage of the current compensation cycle is located before the fourth stage of the current compensation cycle. That is, the average brightness of at least part of the display image displayed before the third stage is obtained at a relatively early time of the compensation cycle, and then the panel temperature of the current compensation cycle can be calculated before the compensation cycle starts. Figure 2 The third stage is the time period when the current compensation cycle displays the 4th frame display picture, and the fourth stage is the time period when the current compensation cycle displays the 5th frame display picture.

[0160] It should be noted that the first stage and the third stage may at least partially overlap or may not overlap, the first stage and the fourth stage may at least partially overlap or may not overlap, the second stage and the third stage may at least partially overlap or may not overlap, and the second stage and the fourth stage may at least partially overlap or may not overlap.

[0161] Fig.12 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0162] In one embodiment of the present application, Fig.12 As shown, the brightness compensation method provided in the embodiment of the present application also includes:

[0163] S41: Obtaining the panel temperature of the previous compensation cycle;

[0164] S42: Determine a first temperature difference in the current compensation cycle based on the panel temperature in the previous compensation cycle and the ambient temperature in the current compensation cycle.

[0165] At this time, based at least on the ambient temperature of the current compensation cycle, the panel temperature of the current compensation cycle is acquired, and the target data voltage is determined based on the panel temperature of the current compensation cycle, including:

[0166] S72: Acquire the panel temperature of the current compensation period based on at least the ambient temperature of the current compensation period and the first temperature difference of the current compensation period.

[0167] Fig.13 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0168] In addition, if Fig.13 As shown, after obtaining the display brightness of the current compensation cycle and the first temperature difference of the current compensation cycle, obtaining the panel temperature of the current compensation cycle based on at least the ambient temperature of the current compensation cycle, and determining the target data voltage based on the panel temperature of the current compensation cycle, including:

[0169] S73: Acquire the panel temperature of the current compensation period based on at least the ambient temperature of the current compensation period, the display brightness of the current compensation period, and the first temperature difference of the current compensation period between the current compensation period and the current compensation period.

[0170] The panel temperature in the previous compensation cycle has been described in the embodiment related to the display panel 01 and will not be described again here.

[0171] In addition, based on the panel temperature of the previous compensation cycle and the ambient temperature of the current compensation cycle, the first temperature difference of the current compensation cycle is determined. Specifically, the difference between the panel temperature of the previous compensation cycle and the ambient temperature of the current compensation cycle is taken to obtain the first temperature difference of the current compensation cycle.

[0172] Fig.14 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0173] In one technical solution, Fig.14 As shown, the panel temperature of the previous compensation cycle is obtained, including:

[0174] S410: Acquire the stored panel temperature of the previous compensation cycle.

[0175] In this technical solution, the panel temperature of the previous compensation cycle that has been stored is directly read or called. Therefore, the panel temperature corresponding to the current compensation cycle obtained when the previous compensation cycle is used as the current compensation cycle can be stored so that it can be obtained in subsequent compensation cycles. In this technical solution, when the first temperature difference of the current compensation cycle is obtained, the required panel temperature of the previous compensation cycle has been pre-stored in the register of the driving module, so the computing power requirement of the driving module is relatively small.

[0176] Fig.15 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0177] In one technical solution, Fig.15 As shown, the panel temperature of the previous compensation cycle is obtained, including:

[0178] S411: Obtaining the stored ambient temperature, display brightness, and first temperature difference corresponding to the previous compensation cycle;

[0179] S412: Determine the panel temperature of the previous compensation cycle based on the ambient temperature, display brightness and the first temperature difference corresponding to the previous compensation cycle.

[0180] Among them, when the previous compensation cycle is used as the current compensation cycle, in order to obtain the panel temperature at this time, the ambient temperature, display brightness and first temperature difference corresponding to the compensation have been stored (for example, cached). After the current compensation cycle is updated, the panel temperature of the previous compensation cycle can be calculated based on the ambient temperature, display brightness and first temperature difference corresponding to the previous compensation cycle. This technical solution utilizes the ambient temperature, display brightness and first temperature difference corresponding to the previous compensation cycle that have been stored, without occupying additional storage space.

[0181] Fig.16 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0182] In one technical solution, if the ambient temperature before the current compensation cycle is less than a preset value, the display panel 01 is in the second state before the current compensation cycle; if the display panel 01 does not display a display image before the current compensation cycle, the display image displayed in the current compensation cycle is the first few frames displayed after the display panel 01 is powered on. When the ambient temperature before the current compensation cycle of the display panel 01 is less than a preset value and / or the display panel 01 does not display a display image before the current compensation cycle, Fig.16 As shown, the panel temperature of the previous compensation cycle is obtained, including:

[0183] S410': Using the ambient temperature of the current compensation cycle as the panel temperature of the previous compensation cycle.

[0184] When the ambient temperature of the display panel 01 before the current compensation cycle is less than the preset value and / or the display panel 01 does not display the display screen before the current compensation cycle, there is no historical data for the display panel 01 to obtain the panel temperature of the current compensation cycle in the current compensation cycle. At this time, taking the ambient temperature as the panel temperature of the previous compensation cycle, on the one hand, the driving module can operate normally to obtain the panel temperature of the current compensation cycle; on the other hand, the temperature can be obtained in a timely and accurate manner.

[0185] In one embodiment, Figure 7 and Figure 8 As shown, the display mode of the display panel 01 includes a first mode and a second mode. The refresh frequency of the display panel 01 in the first mode is greater than the refresh frequency in the second mode, that is, the time for the display panel 01 to display a frame of display image in the first mode is less than the time for displaying a frame of display image in the second mode.

[0186] In one technical solution, Figure 7 As shown, the number of frames of the display picture displayed by the display panel 01 in a compensation cycle in the first mode is less than or equal to the number of frames of the display picture displayed by the display panel 01 in a compensation cycle in the second mode. Therefore, when the display panel 01 is in the first mode and in the first state, the time for obtaining the updated panel temperature is less than the time for obtaining the updated panel temperature when the display panel 01 is in the second mode and in the first state. The higher the refresh frequency of the display panel 01, the less timely the heat generated by the light-emitting display is dissipated. Therefore, shortening the time for obtaining the updated panel temperature can increase the display uniformity of the display panel 01.

[0187] In one technical solution, Figure 8 As shown, the time of one compensation cycle of the display panel 01 in the first mode is substantially equal to the time of one compensation cycle in the second mode, and the computing power of the driving module can be appropriately reduced.

[0188] In one embodiment of the present application, Figure 3 As shown, the display panel 01 includes N preset areas 100, each of which includes a plurality of pixels 10, where N is an integer greater than or equal to 2. The preset areas 100 have been described in the embodiments related to the display panel 01, and will not be described again here.

[0189] Fig.17 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0190] In a technical solution corresponding to this embodiment, as Fig.17 As shown, obtaining the panel temperature of the current compensation period is performed based at least on the ambient temperature of the current compensation period, including:

[0191] S74: For each preset area 100 , based on the ambient temperature of the current compensation period, the display brightness of the preset area 100 in the current compensation period, and the first temperature difference of the preset area 100 in the current compensation period, obtain the temperature of the preset area 100 in the current compensation period.

[0192] At this time, obtaining the average brightness of at least part of the display image displayed before the third stage in the current compensation cycle in the third stage of the current compensation cycle to obtain the display brightness of the current compensation cycle includes:

[0193] S30: For each preset area 100, in the third stage of the current compensation cycle, obtain the average brightness of at least part of the display image of the preset area 100 displayed before the third stage in the current compensation cycle to obtain the display brightness of the preset area 100 in the current compensation cycle.

[0194] Among them, the display brightness of the preset area 100 in the current compensation cycle is the average brightness of at least part of the picture displayed in the current compensation cycle in the preset area 100, and the first temperature difference of the preset area 100 in the current compensation cycle is the temperature difference between the temperature of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle. The ambient temperature of the current compensation cycle, the display brightness of the preset area 100 in the current compensation cycle, and the first temperature difference of the preset area 100 in the current compensation cycle have been described in the embodiments related to the display panel 01, and will not be repeated here.

[0195] In a possible implementation, based on the ambient temperature of the current compensation period, the display brightness of the preset area 100 in the current compensation period, and the first temperature difference of the preset area 100 in the current compensation period, the temperature of the preset area 100 in the current compensation period is obtained, which can be specifically obtained according to the formula T 0 (i) = α * L 0-1 (i)+β*(T 0-1 (i)-T E )+γ*T E The temperature of any preset area 100 in the current compensation cycle is obtained by calculation.

[0196] Fig.18 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0197] In a technical solution corresponding to this embodiment, as Fig.18 As shown, obtaining the panel temperature of the current compensation period is performed based at least on the ambient temperature of the current compensation period, including:

[0198] S75: For each preset area 100, based on the ambient temperature of the current compensation cycle, the display brightness of the preset area 100 in the current compensation cycle, the first temperature difference of the preset area 100 in the current compensation cycle, and the second temperature difference of the first adjacent preset area 100 in the current compensation cycle, obtain the temperature of the preset area 100 in the current compensation cycle.

[0199] Among them, the distance between the first adjacent preset area 100 and the preset area 100 is less than the preset distance; the display brightness of the current compensation cycle is the average brightness of at least part of the picture displayed in the current compensation cycle in the preset area 100; the first temperature difference of the preset area 100 in the current compensation cycle is the temperature difference between the temperature of the preset area 100 of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle; the second temperature difference of the first adjacent preset area 100 in the current compensation cycle is the temperature difference between the temperature of the preset area 100 of the first adjacent preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle. The first adjacent preset area 100, the ambient temperature of the current compensation cycle, the display brightness of the preset area 100 in the current compensation cycle, the first temperature difference of the preset area 100 in the current compensation cycle, and the second temperature difference of the first adjacent preset area 100 in the current compensation cycle have all been described in the embodiments related to the display panel 01, and will not be repeated here.

[0200] In one implementation, based on the ambient temperature of the current compensation period, the display brightness of the preset area 100 in the current compensation period, the first temperature difference of the preset area 100 in the current compensation period, and the second temperature difference of the first adjacent preset area 100 in the current compensation period, the temperature of the preset area 100 in the current compensation period is obtained. Specifically, it can be calculated according to the formula T 0 (i) = α * L 0-1 (i)+β*(T 0-1 (i)-T E )+γ*T E +δ 2 *(T 0m -T E ) operation to obtain the temperature of any preset area 100 in the current compensation cycle.

[0201] In addition, it can also be based on the formula The temperature of any preset area 100 in the current compensation cycle is obtained by calculation.

[0202] Fig.19 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0203] In a technical solution corresponding to this embodiment, as Fig.19 As shown, obtaining the panel temperature of the current compensation period is performed based at least on the ambient temperature of the current compensation period, including:

[0204] S76: For each of the preset areas 100, based on the ambient temperature of the current compensation period, the display brightness of the preset area 100 in the current compensation period, the first temperature difference of the preset area 100 in the current compensation period, the second temperature difference of the first adjacent preset area 100 in the current compensation period, and the third temperature difference of the second adjacent preset area 100 in the current compensation period, the temperature of the preset area 100 in the current compensation period is obtained.

[0205] Among them, the distance between the first adjacent preset area 100 and the second adjacent preset area 100 and the preset area 100 is less than the preset distance, and the distance between the first adjacent preset area 100 and the preset area 100 is less than the distance between the second adjacent area and the preset area 100; the display brightness of the current compensation cycle is the average brightness of at least part of the picture displayed in the current compensation cycle in the preset area 100, the first temperature difference of the preset area 100 in the current compensation cycle is the temperature difference between the temperature of the preset area 100 of the preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle, the second temperature difference of the preset area 100 in the current compensation cycle is the temperature difference between the temperature of the preset area 100 of the first adjacent preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle, and the third temperature difference of the preset area 100 in the current compensation cycle is the temperature difference between the temperature of the preset area 100 of the second adjacent preset area 100 in the previous compensation cycle and the ambient temperature of the current compensation cycle. The first adjacent preset area 100, the second adjacent preset area 100, the ambient temperature of the current compensation period, the display brightness of the preset area 100 in the current compensation period, the first temperature difference of the preset area 100 in the current compensation period, the second temperature difference of the first adjacent preset area 100 in the current compensation period and the third temperature difference of the second adjacent preset area 100 in the current compensation period have all been described in the embodiments related to the display panel 01 and will not be repeated here.

[0206] In one possible implementation, the temperature of the preset area 100 in the current compensation cycle is obtained based on the ambient temperature of the current compensation cycle, the display brightness of the preset area 100 in the current compensation cycle, the first temperature difference of the preset area 100 in the current compensation cycle, the second temperature difference of the first adjacent preset area 100 in the current compensation cycle, and the third temperature difference of the second adjacent preset area 100 in the current compensation cycle. Specifically, the temperature of the preset area 100 in the current compensation cycle of any preset area 100 can be obtained by calculating according to any one of the following formulas.

[0207]

[0208] T 0 (i) = α * L 0-1 (i)+β*(T 0-1 (i)-TE )+γ*T E +δ 5 *(T 0m -T E )+ε 3 *(T 0n -T E )

[0209] Fig. 20 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application, Fig.21 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application, Fig. 22 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application, Fig.23 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application, Fig.24 A schematic diagram of a flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application, Fig.25 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0210] When a preset area 100 corresponds to multiple first adjacent preset areas 100, such as Fig. 20 , Fig. 22 and Fig.23 As shown, in order to obtain the second temperature difference of the first adjacent preset area 100 in the current compensation cycle, the brightness compensation method provided in the embodiment of the present application may further include:

[0211] S511: for each first adjacent preset area 100, obtaining the temperature of the preset area 100 corresponding to the first adjacent preset area 100 in the previous compensation cycle;

[0212] S512: For each first adjacent preset area 100, determine the difference between the preset area 100 temperature corresponding to the first adjacent preset area 100 in the previous compensation cycle and the ambient temperature in the current compensation cycle as the second temperature difference of the first adjacent preset area 100 in the current compensation cycle.

[0213] When a preset area 100 corresponds to multiple first adjacent preset areas 100, such as Fig.21 and Fig.24 and Fig.25 As shown, in order to obtain the second temperature difference of the first adjacent preset area 100 in the current compensation cycle, the brightness compensation method provided in the embodiment of the present application may further include:

[0214] S521: Obtaining an average value of the temperatures of the preset areas 100 of the plurality of first adjacent preset areas 100 stored in the previous compensation cycle;

[0215] S522: taking the difference between the average temperature of the preset areas 100 of the plurality of first adjacent preset areas 100 in the previous compensation cycle and the ambient temperature in the current compensation cycle as the second temperature difference of the first adjacent preset areas 100 in the current compensation cycle.

[0216] When a preset area 100 corresponds to multiple second adjacent preset areas 100, such as Fig. 22 and Fig.24 As shown, in order to obtain the third temperature difference of the second adjacent preset area 100 in the current compensation period, the brightness compensation method provided in the embodiment of the present application may further include:

[0217] S611: for each second adjacent preset area 100, obtaining the temperature of the preset area 100 corresponding to the second adjacent preset area 100 in the previous compensation cycle;

[0218] S612: For each second adjacent preset area 100, determine the difference between the preset area 100 temperature corresponding to the second adjacent preset area 100 in the previous compensation cycle and the ambient temperature in the current compensation cycle as the third temperature difference of the second adjacent preset area 100 in the current compensation cycle.

[0219] When a preset area 100 corresponds to multiple second adjacent preset areas 100, such as Fig.23 and Fig.25 In order to obtain the third temperature difference of the second adjacent preset area 100 in the current compensation cycle, the brightness compensation method provided in the embodiment of the present application may further include:

[0220] S621: Obtaining an average value of the temperatures of the preset areas 100 of the plurality of second adjacent preset areas 100 stored in the previous compensation cycle;

[0221] S622: taking the difference between the average temperature of the preset areas 100 of the plurality of second adjacent preset areas 100 in the previous compensation cycle and the ambient temperature in the current compensation cycle as the third temperature difference of the second adjacent preset areas 100 in the current compensation cycle.

[0222] Fig.26 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0223] In one embodiment of the present application, Fig.26 As shown, the brightness compensation method of the display panel also includes:

[0224] S2: Determine whether the ambient temperature of the current compensation cycle is greater than or equal to a preset value.

[0225] If the ambient temperature of the current compensation cycle is greater than or equal to the preset value, execute S7: obtain the panel temperature of the current compensation cycle based at least on the ambient temperature of the current compensation cycle, and execute S8: determine the target data voltage based on the panel temperature of the current compensation cycle and the image data of the picture to be displayed.

[0226] If the ambient temperature of the current compensation cycle is less than the preset value, S91 is executed: determining a target data voltage based on the image data of the picture to be displayed; wherein the target data voltage is independent of the panel temperature of the current compensation cycle.

[0227] That is, when the ambient temperature is less than the preset value, the panel temperature of the current compensation cycle is obtained and the target data voltage is further determined according to the method provided in the above embodiment; when the ambient temperature is less than the preset value, when determining the target data voltage according to the image data, it is not necessary to obtain it based on the panel temperature of the current compensation area.

[0228] Fig. 27 A schematic flow chart of a brightness compensation method for a display panel provided in an embodiment of the present application.

[0229] In one embodiment of the present application, Fig. 27 As shown, the brightness compensation method of the display panel also includes:

[0230] S2: Determine whether the ambient temperature of the current compensation period is greater than or equal to a preset value;

[0231] If the ambient temperature of the current compensation cycle is greater than or equal to the preset value, execute S7: obtain the panel temperature of the current compensation cycle based at least on the ambient temperature of the current compensation cycle, and execute S8: determine the target data voltage based on the panel temperature of the current compensation cycle and the image data of the picture to be displayed.

[0232] If the ambient temperature of the current compensation cycle is less than the preset value, S92 is executed: the target data voltage is determined based on the display brightness of the current compensation cycle and the image data of the picture to be displayed; the target data voltage has nothing to do with the ambient temperature of the current compensation cycle and the first temperature difference of the current compensation cycle. That is, when the ambient temperature is less than the preset value, the panel temperature of the current compensation cycle is obtained according to the method provided in the above embodiment and the target data voltage is further determined; when the ambient temperature is less than the preset value, when determining the target data voltage according to the image data, the LUT needs to be selected based on the display brightness of the current compensation cycle and does not need to be based on the ambient temperature of the current compensation cycle and the first temperature difference of the current compensation cycle.

[0233] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: The display panel includes a plurality of pixels; In the first state, the data voltage received by the pixel in the period to be compensated is related to the panel temperature of the current period; The panel temperature of the current compensation cycle is related to the ambient temperature of the current compensation cycle, the display brightness of the current compensation cycle and the first temperature difference of the current compensation cycle. The display brightness of the current compensation cycle is the average brightness of at least part of the picture displayed in the current compensation cycle, and the first temperature difference of the current compensation cycle is the temperature difference between the panel temperature of the previous compensation cycle and the ambient temperature of the current compensation cycle.

2. The display panel according to claim 1, characterized in that: In the second state, the data voltage received by the pixel in the compensation period is independent of the panel temperature in the current compensation period; the ambient temperature of the display panel when it is in the first state is greater than or equal to a preset value, and the ambient temperature of the display panel when it is in the second state is less than the preset value.

3. The display panel according to claim 1, characterized in that: In the second state, the data voltage received by the pixel in the period to be compensated is related to the display brightness of the current compensation period, and the data voltage received by the pixel in the period to be compensated is independent of the ambient temperature of the current compensation period and the first temperature difference of the current compensation period; The ambient temperature of the display panel in the first state is greater than or equal to a preset value, and the ambient temperature of the display panel in the second state is less than or equal to a preset value.

4. The display panel according to claim 1, characterized in that: In the first state, the panel temperature of the current compensation period satisfies: T0=α*L 0-1 +β*(T 0-1 -T E )+γ*T E Where T0 is the panel temperature of the current compensation period, T 0-1 is the panel temperature of the previous compensation cycle, T E is the ambient temperature of the current compensation cycle, L 0-1 For the display brightness of the current compensation period, α, β and γ are the weight coefficients.

5. The display panel according to claim 1, characterized in that: The display panel includes N preset areas, each of which includes a plurality of the pixels, and N is an integer greater than or equal to 2; In the first state, the data voltage received by the pixel in the to be compensated period is related to the panel temperature of the current compensation period, including: In the first state, the data voltage received by the pixel in the i-th preset area in the compensation period is related to the preset area temperature of the i-th preset area in the current compensation period; the preset area temperature of the i-th preset area in the current compensation period is the panel temperature of the i-th preset area in the current compensation period, the preset area temperature of the i-th preset area in the current compensation period is related to the ambient temperature of the current compensation period, the display brightness of the i-th preset area in the current compensation period and the first temperature difference of the i-th preset area in the current compensation period; the display brightness of the i-th preset area in the current compensation period is the average brightness of at least part of the picture displayed in the current compensation period in the i-th preset area, and the first temperature difference of the i-th preset area in the current compensation period is the temperature difference between the preset area temperature of the i-th preset area in the previous compensation period and the ambient temperature of the current compensation period; 1≤i≤N.

6. The display panel according to claim 5, characterized in that: The i-th preset area is in the preset area of ​​the current compensation period, which meets: T0(i)=α*L 0-1 (i)+β*(T 0-1 (i)-T E )+γ*T E Where T0(i) is the preset area temperature of the i-th preset area in the current compensation period, T 0-1 (i) is the preset area temperature of the i-th preset area in the previous compensation period, T E is the current compensated ambient temperature, L 0-1 (i) is the display brightness of the i-th preset area in the current compensation period, and α, β and γ are the weight coefficients.

7. The display panel according to claim 5, characterized in that: In the first state, the preset area temperature of the i-th preset area in the current compensation cycle is also related to the second temperature difference of the first adjacent preset area in the current compensation cycle, and the distance between the first adjacent preset area and the i-th preset area is less than the preset distance; the second temperature difference of the current compensation cycle is the temperature difference between the preset area temperature of the first adjacent preset area in the previous compensation cycle and the ambient temperature of the current compensation cycle.

8. The display panel according to claim 7, characterized in that: The i-th preset area corresponds to m first adjacent preset areas, m is a positive integer greater than or equal to 2; the i-th preset area temperature in the preset area of ​​the current compensation period satisfies: Where T0(i) is the preset area temperature of the i-th preset area in the current compensation period, T 0-1 (i) is the preset area temperature of the i-th preset area in the previous compensation period, T 0-1 (j) is the preset area temperature of the jth first adjacent preset area in the previous compensation period, TE is the ambient temperature of the current compensation period, L 0-1 (i) is the display brightness of the i-th preset area in the current compensation period, α, β, γ and δ1 are weight coefficients, 1≤j≤m.

9. The display panel according to claim 7, characterized in that: The i-th preset area corresponds to m first adjacent preset areas, m is a positive integer greater than or equal to 2; the i-th preset area temperature in the preset area of ​​the current compensation period satisfies: T0(i)=α*L 0-1 (i)+β*(T 0-1 (i)-T E )+Y*T E +δ2*(T 0m -T E ) Among them, T0(i) is the preset area temperature of the i-th preset area in the current compensation period, T0-1(i) is the preset area temperature of the i-th preset area in the previous compensation period, T 0m For the average value of the preset area temperature of m first adjacent preset areas in the previous compensation period, T E is the ambient temperature of the current compensation cycle, L 0-1 (i) is the display brightness of the i-th preset area in the current compensation period, α, β, γ and δ2 are weight coefficients, 1≤j≤m.

10. The display panel according to claim 5, characterized in that: In the first state, the preset area temperature of the i-th preset area in the current compensation cycle is also related to the second temperature difference of the first adjacent preset area in the current compensation cycle and the third temperature difference of the second adjacent preset area in the current compensation cycle; The distances between the first adjacent preset area and the second adjacent preset area and the i-th preset area are both smaller than the preset distances, and the distance between the first adjacent preset area and the i-th preset area is smaller than the distance between the second adjacent area and the i-th preset area; The second temperature difference of the current compensation cycle is the temperature difference between the preset area temperature of the first adjacent preset area in the previous compensation cycle and the ambient temperature of the current compensation cycle, and the third temperature difference of the current compensation cycle is the temperature difference between the preset area temperature of the second adjacent preset area in the previous compensation cycle and the ambient temperature of the current compensation cycle.

11. The display panel according to claim 10, characterized in that: The i-th preset area corresponds to m first adjacent preset areas and n second adjacent preset areas. m is a positive integer greater than or equal to 2 and n is a positive integer greater than or equal to 2; The i-th preset area is in the preset area of ​​the current compensation period, which meets: Where T0(i) is the preset area temperature of the i-th preset area in the current compensation period, T 0-1 (i) is the preset area temperature of the i-th preset area in the previous compensation cycle, T0-1(j) is the preset area temperature of the j-th first adjacent preset area in the previous compensation cycle, T0-1(k) is the preset area temperature of the k-th preset area in the previous compensation cycle, T E is the ambient temperature of the current compensation cycle, L 0-1 (i) is the display brightness of the i-th preset area in the current compensation period, α, β, γ, δ3 and ε1 are weight coefficients, 1≤j≤m, 1≤k≤n.

12. The display panel according to claim 10, characterized in that: The i-th preset area corresponds to m first adjacent preset areas and n second adjacent preset areas. m is a positive integer greater than or equal to 2 and n is a positive integer greater than or equal to 2; The i-th preset area is in the preset area of ​​the current compensation period, which meets: Where T0(i) is the preset area temperature of the i-th preset area in the current compensation period, T 0-1 (i) is the preset area temperature of the i-th preset area in the previous compensation period, T 0-1 (j) is the preset area temperature of the jth first adjacent preset area in the previous compensation period, T 0n For the average value of the preset area temperature of the n first adjacent preset areas in the previous compensation period, T E is the ambient temperature of the current compensation cycle, L 0-1 (i) is the display brightness of the i-th preset area in the current compensation period, α, β, γ, δ4 and ε2 are weight coefficients, 1≤j≤m, 1≤k≤n.

13. The display panel according to claim 10, characterized in that: The i-th preset area corresponds to m first adjacent preset areas and n second adjacent preset areas. m is a positive integer greater than or equal to 2 and n is a positive integer greater than or equal to 2; The i-th preset area is in the preset area of ​​the current compensation period, which meets: T0(i)=α*L 0-1 (i)+β*(T 0-1 (i)-T E )+γ*T E +δ5*(T 0m -T E )+ε3*(T 0n -T E ) Where T0(i) is the preset area temperature of the i-th preset area in the current compensation period, T 0-1 (i) is the preset area temperature of the i-th preset area in the previous compensation period, T 0m For the average value of the preset area temperature of m first adjacent preset areas in the previous compensation period, T 0n For the average value of the preset area temperature of the n first adjacent preset areas in the previous compensation period, T E is the ambient temperature of the current compensation cycle, L 0-1 (i) is the display brightness of the i-th preset area in the current compensation period, α, β, γ, δ5 and ε3 are weight coefficients, 1≤j≤m, 1≤k≤n.

14. The display panel according to any one of claims 4, 6, 8, 9, 11, 12, and 13, characterized in that γ=1.

15. The display panel according to claim 1, characterized in that: The display mode of the display panel includes a first mode and a second mode, and the refresh frequency of the display panel in the first mode is greater than the refresh frequency of the second mode; The number of frames of the display picture displayed by the display panel in one compensation cycle in the first mode is less than or equal to the number of frames of the display picture displayed by the display panel in one compensation cycle in the second mode.

16. A method for luminance compensation of a display panel, characterized in that include: Get the ambient temperature of the current compensation cycle; Obtain the panel temperature of the current compensation period at least based on the ambient temperature of the current compensation period; The panel temperature of the current compensation cycle is related to the ambient temperature of the current compensation cycle, the display brightness of the current compensation cycle, and the first temperature difference of the current compensation cycle, wherein the display brightness of the current compensation cycle is the average brightness of at least a portion of the screen displayed in the current compensation cycle, and the first temperature difference of the current compensation cycle is the temperature difference between the panel temperature of the previous compensation cycle and the ambient temperature of the current compensation cycle; The target data voltage is determined based on the panel temperature of the current compensation period.

17. The method according to claim 16, characterized in that After obtaining the current ambient temperature, the method further comprises: Determine whether the ambient temperature of the current compensation period is greater than or equal to the preset value; If the ambient temperature of the current compensation period is greater than or equal to a preset value, the panel temperature of the current compensation period is obtained based on at least the ambient temperature of the current compensation period, and the target data voltage is determined based on the panel temperature of the current compensation period and the image data of the picture to be displayed; If the ambient temperature of the current compensation period is less than a preset value, the target data voltage is determined based on the image data of the screen to be displayed; the target data voltage is independent of the panel temperature of the current compensation period.

18. The method according to claim 16, characterized in that After obtaining the current ambient temperature, the method further comprises: Determine whether the ambient temperature of the current compensation period is greater than or equal to the preset value; If the ambient temperature of the current compensation period is greater than or equal to a preset value, the panel temperature of the current compensation period is obtained based on at least the ambient temperature of the current compensation period, and the target data voltage is determined based on the panel temperature of the current compensation period and the image data of the picture to be displayed; If the ambient temperature of the current compensation cycle is less than the preset value, the target data voltage is determined based on the display brightness of the current compensation cycle and the image data of the picture to be displayed; the target data voltage is independent of the ambient temperature of the current compensation cycle and the first temperature difference of the current compensation cycle.

19. The method according to claim 16, characterized in that The display panel is used to display a multi-frame display screen in one of the compensation period, and the method further comprises: The ambient temperature of the current compensation cycle is obtained in the first stage of the current compensation cycle; the display panel also displays at least one frame of display image in the second stage of the current compensation cycle, and the first stage of the current compensation cycle is located before the second stage of the current compensation cycle.

20. The method according to claim 16, characterized in that The display panel is used to display a multi-frame display screen in one of the compensation period, and the method further comprises: In the third stage of the current compensation period, the average brightness of at least part of the display screen displayed before the third stage in the current compensation period is obtained, and the display brightness of the current compensation period is obtained.

21. The method according to claim 16, characterized in that The method further comprises: Get the panel temperature of the last compensation cycle; The first temperature difference of the current compensation period is determined based on the panel temperature of the previous compensation period and the ambient temperature of the current compensation period.

22. The method according to claim 21, characterized in that: The panel temperature obtained for the previous compensation period includes: Gets the panel temperature of the stored previous compensation period.

23. The method according to claim 21, characterized in that The panel temperature obtained for the previous compensation period includes: Obtain the ambient temperature, display brightness and first temperature difference corresponding to the stored previous compensation period; Based on the ambient temperature, display brightness and first temperature difference corresponding to the previous compensation period, the panel temperature of the previous compensation period is determined.

24. The method according to claim 21, characterized in that If the ambient temperature before the current compensation cycle is less than a preset value, and / or if the display panel does not display a display image before the current compensation cycle, obtaining the panel temperature of the previous compensation cycle includes: The ambient temperature of the current compensation period is used as the panel temperature of the previous compensation period.

25. The method according to claim 16, characterized in that The display mode of the display panel includes a first mode and a second mode, and the refresh frequency of the display panel in the first mode is greater than the refresh frequency of the second mode; The number of frames of the display picture displayed by the display panel in one compensation cycle in the first mode is less than or equal to the number of frames of the display picture displayed by the display panel in one compensation cycle in the second mode.

26. The method according to claim 16, characterized in that The display panel includes N preset areas, each of which includes a plurality of pixels, and N is an integer greater than or equal to 2; The panel temperature of the current compensation period is obtained based at least on the ambient temperature of the current compensation period, including: For each of the preset areas, based on the ambient temperature of the current compensation period, the display brightness of the preset area in the current compensation period, and the first temperature difference of the preset area in the current compensation period, the temperature of the preset area in the current compensation period is obtained; The display brightness of the preset area in the current compensation cycle is the average brightness of at least part of the picture displayed in the current compensation cycle in the preset area, and the first temperature difference of the preset area in the current compensation cycle is the temperature difference between the preset area temperature of the preset area in the previous compensation cycle and the ambient temperature of the current compensation cycle.

27. The method according to claim 16, characterized in that The display panel includes N preset areas, each of which includes a plurality of pixels, and N is an integer greater than or equal to 2; The panel temperature of the current compensation period is obtained based at least on the ambient temperature of the current compensation period, including: For each of the preset areas, the preset area temperature of the current compensation cycle is obtained based on the ambient temperature of the current compensation cycle, the display brightness of the preset area in the current compensation cycle, the first temperature difference of the preset area in the current compensation cycle, and the second temperature difference of the first adjacent preset area in the current compensation cycle; the distance between the first adjacent preset area and the preset area is less than the preset distance; the display brightness of the current compensation cycle is the average brightness of at least part of the picture displayed in the current compensation cycle in the preset area, the first temperature difference of the preset area in the current compensation cycle is the temperature difference between the preset area temperature of the preset area in the previous compensation cycle and the ambient temperature of the current compensation cycle, and the second temperature difference of the current compensation cycle is the temperature difference between the preset area temperature of the first adjacent preset area in the previous compensation cycle and the ambient temperature of the current compensation cycle.

28. The method of claim 16, characterized in that The display panel includes N preset areas, each of which includes a plurality of pixels, and N is an integer greater than or equal to 2; The panel temperature of the current compensation period is obtained based at least on the ambient temperature of the current compensation period, including: For each of the preset areas, based on the ambient temperature of the current compensation period, the display brightness of the preset area in the current compensation period, the first temperature difference of the preset area in the current compensation period, the second temperature difference of the first adjacent preset area in the current compensation period, and the third temperature difference of the second adjacent preset area in the current compensation period, the temperature of the preset area in the current compensation period is obtained; The distances between the first adjacent preset area and the second adjacent preset area and the preset area are less than the preset distance, and the distance between the first adjacent preset area and the preset area is less than the distance between the second adjacent area and the preset area; the display brightness of the current compensation cycle is the average brightness of at least part of the picture displayed in the current compensation cycle in the preset area, the first temperature difference of the preset area in the current compensation cycle is the temperature difference between the preset area temperature of the preset area in the previous compensation cycle and the ambient temperature of the current compensation cycle, the second temperature difference of the current compensation cycle is the temperature difference between the preset area temperature of the first adjacent preset area in the previous compensation cycle and the ambient temperature of the current compensation cycle, and the third temperature difference of the current compensation cycle is the temperature difference between the preset area temperature of the second adjacent preset area in the previous compensation cycle and the ambient temperature of the current compensation cycle.

29. The method according to claim 27 or 28, characterized in that One preset area corresponds to a plurality of first adjacent preset areas, the method further comprises: For each of the first adjacent preset area, the preset area temperature corresponding to the first adjacent preset area in the previous compensation period is obtained; For each of the first adjacent preset areas, a difference between a preset area temperature corresponding to the first adjacent preset area in a previous compensation cycle and an ambient temperature in a current compensation cycle is determined as a second temperature difference of the first adjacent preset area in the current compensation cycle.

30. The method according to claim 27 or 28, characterized in that The method further comprises: Obtain the average value of the preset area temperatures of the stored plurality of first adjacent preset areas in the previous compensation period; The difference between the average temperature of the preset areas of the plurality of first adjacent preset areas in the previous compensation cycle and the ambient temperature in the current compensation cycle is used as the second temperature difference of the first adjacent preset areas in the current compensation cycle.

31. The method according to claim 28, characterized in that The method further comprises: For each of the second adjacent preset area, the preset area temperature corresponding to the second adjacent preset area in the previous compensation period is obtained; For each of the second adjacent preset areas, a difference between the preset area temperature corresponding to the second adjacent preset area in the previous compensation cycle and the ambient temperature in the current compensation cycle is determined as the third temperature difference of the second adjacent preset area in the current compensation cycle.

32. The method according to claim 28, characterized in that The method further comprises: Obtain the average value of the preset area temperatures of the stored plurality of second adjacent preset areas in the previous compensation period; The difference between the average temperature of the preset areas of the plurality of second adjacent preset areas in the previous compensation cycle and the ambient temperature in the current compensation cycle is used as the third temperature difference of the second adjacent preset areas in the current compensation cycle.

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