Display device, compensation data acquisition method, and control method

Abstract

A display device, a compensation data acquisition method and a control method, the display device comprising a display panel, a power module and a display driving module; a voltage end of the power module is connected with the display panel, used for connecting a negative voltage, the power module is used for entering a low load mode when an electrical parameter of the voltage end is lower than a preset threshold, and entering a high load mode when the electrical parameter of the voltage end is not lower than the preset threshold; the display driving module is connected with the voltage end, and the display driving module is used for outputting a voltage to the voltage end according to a display parameter, so that the power module maintains the high load mode. By directly compensating the voltage end of the power module through the display driving module, the power module can be prevented from entering the low load mode or switching back and forth between the low load mode and the high load mode, thereby improving the display quality of the display device.

Description

Technical Field

[0001] This application belongs to the field of display panel technology, and in particular relates to a display device, a compensation data acquisition method, and a control method. Background Technology

[0002] Currently, organic light-emitting diode (OLED) and flat panel display devices based on light-emitting diode (LED) technologies are widely used and have become the mainstream of display devices due to their advantages such as high image quality, power saving, thin body and wide range of applications. Summary of the Invention

[0003] The purpose of this application is to provide a display device, a compensation data acquisition method, and a control method to solve the problems existing in the prior art.

[0004] A first aspect of this application provides a display device, which includes a display panel, a power supply module, and a display driver module. The voltage terminal of the power supply module is connected to the display panel and is used to receive a negative voltage. The power supply module is configured to enter a low-load mode when the electrical parameters at the voltage terminal are lower than a preset threshold, and to enter a high-load mode when the electrical parameters at the voltage terminal are not lower than the preset threshold. The display driver module is connected to the voltage terminal and is used to output voltage to the voltage terminal according to display parameters, so that the power supply module maintains a high-load mode.

[0005] A second aspect of this application provides a compensation data acquisition method applied to a display device. The display device includes a display panel, a power supply module, and a display driver module. The voltage terminal of the power supply module is connected to the display panel and is used to receive a negative voltage. The power supply module is configured to enter a low-load mode when the electrical parameters at the voltage terminal are lower than a preset threshold, and to enter a high-load mode when the electrical parameters at the voltage terminal are not lower than the preset threshold. The display driver module is connected to the voltage terminal and is used to output voltage to the voltage terminal according to display parameters, so that the power supply module maintains a high-load mode. The compensation data acquisition method includes: configuring the display device with different test parameters; acquiring compensation values ​​corresponding to each test parameter and obtaining a first compensation table; wherein the compensation value is obtained based on the minimum voltage output by the display driver module to the voltage terminal when the power supply module is operating in the low-load mode, causing the power supply module to change from the low-load mode to the high-load mode; and the first compensation table includes the correspondence between each test parameter and each compensation value.

[0006] In one embodiment, the test parameters include grayscale parameters; preferably, the grayscale parameters include 8 grayscale, 16 grayscale, 32 grayscale, 64 grayscale, 128 grayscale and 255 grayscale; preferably, the grayscale parameters include 16 grayscale, 32 grayscale, 64 grayscale, 128 grayscale and 255 grayscale.

[0007] In one embodiment, the test parameters include a brightness parameter; preferably, the brightness parameter ranges from 1 nit to 50 nits; preferably, the brightness parameter ranges from 1 nit to 30 nits.

[0008] In one embodiment, the difference between any two adjacent brightness parameters is less than 5 nits.

[0009] In one embodiment, obtaining the compensation value corresponding to each of the test parameters includes: when the display driver module receives the test parameters and the power module enters the low load mode, it outputs an increasing voltage to the voltage terminal; when the power module changes from the low load mode to the high load mode, it obtains the compensation value corresponding to the test parameters based on the voltage output to the voltage terminal by the display driver module.

[0010] A third aspect of this application provides a control method applied to a display device, the display device including a display panel, a power supply module, and a display driving module; the voltage terminal of the power supply module is connected to the display panel and is used to receive a negative voltage; the power supply module is configured to enter a low-load mode when the electrical parameters at the voltage terminal are lower than a preset threshold, and to enter a high-load mode when the electrical parameters at the voltage terminal are not lower than the preset threshold; the display driving module is connected to the voltage terminal and is used to output voltage to the voltage terminal according to display parameters, so that the power supply module maintains a high-load mode; the control method includes: according to the first compensation table as described above, using the maximum compensation value corresponding to each grayscale parameter in the first compensation table as the compensation reference value for each grayscale parameter, using the brightness parameter corresponding to each compensation reference value in the first compensation table as the reference brightness for each grayscale parameter, and using the maximum value of the brightness parameter in the first compensation table as the reference brightness for each grayscale parameter. The compensation values ​​are the compensation thresholds for each of the grayscale parameters, resulting in a second compensation table. The second compensation table includes the correspondence between each grayscale parameter, the reference brightness of each grayscale parameter, the maximum value of the brightness parameter, the compensation reference value for each grayscale parameter, and the compensation threshold for each grayscale parameter. When the real-time brightness is less than or equal to the reference brightness, the display driver module determines the corresponding compensation reference value in the second compensation table based on the real-time grayscale, to obtain a real-time compensation value based on the compensation reference value. When the real-time brightness is greater than the reference brightness, the display driver module determines the corresponding compensation reference value, the reference brightness, and the compensation threshold in the second compensation table based on the real-time grayscale, to determine the real-time compensation value based on the real-time brightness, the reference brightness, the maximum value of the brightness parameter, the compensation reference value, and the compensation threshold. The display driver module outputs a voltage to the voltage terminal based on the real-time compensation value.

[0011] In one embodiment, determining the real-time compensation value based on the real-time brightness, the reference brightness, the maximum value of the brightness parameter, the compensation reference value, and the compensation threshold includes: obtaining the real-time compensation value based on the real-time brightness, the reference brightness, the maximum value of the brightness parameter, the compensation reference value, the compensation threshold, and a linear calculation formula; preferably, the linear calculation formula is: real-time compensation value = compensation reference value - (compensation reference value - compensation threshold) × (real-time brightness - reference brightness) ÷ (maximum value of brightness parameter - reference brightness).

[0012] In one embodiment, the reference brightness of each of the grayscale parameters is equal.

[0013] In one embodiment, each of the compensation thresholds is 0.

[0014] The beneficial effects of this application embodiment compared with the prior art are: by directly compensating the voltage terminal of the power module through the display driver module, the power module can avoid entering a low load mode or switching back and forth between low load mode and high load mode, thereby improving the display quality of the display device. Attached Figure Description

[0015] Figure 1 A voltage waveform diagram of a voltage terminal provided in an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0017] Figure 3 A flowchart illustrating a compensation data acquisition method provided in an embodiment of this application;

[0018] Figure 4 A flowchart of a control method provided in an embodiment of this application.

[0019] Explanation of reference numerals in the attached drawings: 10, display device; 100, display panel; 200, power supply module; 300, display driver module. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In existing technology, the power module can select between a low-load mode and a high-load mode based on the current flowing through its voltage terminal. When the display device is configured with different display parameters, the current at the power module's voltage terminal changes accordingly. When the power module operates in low-load mode, the voltage at its voltage terminal will experience the following... Figure 1 The voltage fluctuations shown affect the normal operation of the power module, causing the displayed image to show "water ripples".

[0025] To avoid the above problems, in the prior art, a grounding resistor is usually connected to the voltage terminal to increase the current flowing through the voltage terminal so that the power module is kept in high load mode.

[0026] However, using a grounding resistor increases the number of components used, adding to manufacturing and design costs. In addition, the grounding resistor also increases the overall power consumption of the display device because of the extra current flowing through it.

[0027] Figure 2 A schematic diagram of a display panel according to an embodiment of this application is shown. For ease of explanation, only the parts relevant to this embodiment are shown, and the details are as follows:

[0028] A display device 10 includes a display panel 100, a power module 200, and a display driver module 300.

[0029] The power supply module 200 has its voltage terminal connected to the display panel 100 and is used to receive a negative voltage. The power supply module 200 is configured to enter a low-load mode when the electrical parameters at its voltage terminal are below a preset threshold, and to enter a high-load mode when the electrical parameters at its voltage terminal are not below the preset threshold. The display driver module 300 is connected to the voltage terminal and is used to output voltage to the voltage terminal according to display parameters, so that the power supply module 200 maintains a high-load mode. Specifically, the display driver module 300 may include a display driver IC (DDIC). The power supply module 200 may include a power management IC (PMIC). The display parameters may include real-time grayscale and real-time brightness.

[0030] Specifically, the electrical parameters at the voltage terminal can be either voltage or current parameters. The preset threshold can be determined by the specific design and model of the power module 200 according to actual conditions, and this application embodiment does not limit it. The voltage terminal of the power module 200 can refer to the negative voltage terminal or the common ground terminal of the power module 200. The power module 200 may also include a positive voltage terminal, which is also connected to the display panel 100. The power module 200 can provide the corresponding driving voltage to the display panel 100 through the positive voltage terminal and the voltage terminal according to the display parameters. At the same time, after the power module 200 and the display panel 100 form a power supply circuit, the power module 200 can automatically control its own working mode according to the current collected by the voltage terminal.

[0031] By directly compensating the voltage terminal of the power supply module 200 through the display driver module 300, the power supply module 200 can be prevented from entering a low-load mode or switching back and forth between low-load and high-load modes, thereby improving the display quality of the display device 10.

[0032] Meanwhile, the display driver module 300 can selectively supply voltage to the power supply module 200 according to the display parameters, which can reduce the overall power consumption of the display device 10 compared with the existing solution that uses a grounding resistor.

[0033] It should be noted that, Figure 3 A flowchart of a compensation data acquisition method according to an embodiment of this application is shown. For ease of explanation, only the parts relevant to this embodiment are shown, and are described in detail below:

[0034] A method for acquiring compensation data is applied to a display device 10 as described in any of the above embodiments.

[0035] The compensation data acquisition method includes steps S100 to S200.

[0036] Step S100: Configure the display device with different test parameters. The test parameters include grayscale parameters and brightness parameters.

[0037] Specifically, appropriate test parameters can be selected within a reasonable range to test the display device 10 based on its real-time usage and the parameters of the power module 200. In particular, test parameters that may cause the power module 200 to enter a low-load mode can be selected to test the display device 10.

[0038] Step S200: Obtain the compensation values ​​corresponding to each test parameter and obtain the first compensation table. The compensation values ​​can be obtained based on the minimum voltage output by the display drive module 300 to the voltage terminal when the power module 200 is operating in low-load mode, causing the power module 200 to change from low-load mode to high-load mode. The first compensation table includes the correspondence between each test parameter and each compensation value.

[0039] When the display driver module 300 does not output voltage to the voltage terminal, if the power supply module 200 is operating in high load mode, there is no need for the display driver module 300 to compensate the voltage terminal, and the compensation value obtained at this time is 0. When the display driver module 300 does not output voltage to the voltage terminal, if the power supply module 200 is operating in low load mode, the display driver module 300 can be controlled to compensate the voltage terminal, outputting an increasing voltage to the voltage terminal until the power supply module 200 enters high load mode, thereby obtaining the minimum voltage (compensation value) that makes the power supply module 200 change from low load mode to high load mode.

[0040] By using different test parameters to test according to the possible situations and recording the compensation values ​​corresponding to each test parameter, the first compensation table can be obtained.

[0041] It is understandable that when the display device 10 is in use in real time, the display driver module 300 can find the corresponding test parameters and corresponding compensation values ​​in the first compensation table according to the display parameters, and then output the corresponding voltage according to the compensation value to increase the current flowing through the voltage terminal, so that the power supply module 200 maintains a high load mode and avoids the low load mode of the power supply module 200 from affecting the display effect of the display device 10.

[0042] In one embodiment, the test parameters include grayscale parameters, which include 8 grayscale levels, 16 grayscale levels, 32 grayscale levels, 64 grayscale levels, 128 grayscale levels, and 255 grayscale levels. Preferably, the grayscale parameters include 16 grayscale levels, 32 grayscale levels, 64 grayscale levels, 128 grayscale levels, and 255 grayscale levels.

[0043] Understandably, a test parameter includes a grayscale parameter, and the power module 200 can adjust the voltage supplied to the driver panel according to the grayscale parameter in the test parameter.

[0044] For example, the grayscale parameter in one test parameter is 255 grayscale levels.

[0045] In one embodiment, the test parameters include a brightness parameter, the value of which ranges from 1 nit to 50 nits; preferably, the value of which ranges from 1 nit to 30 nits.

[0046] Understandably, a test parameter includes a brightness parameter, and the power module 200 can adjust the voltage supplied to the driver panel according to the brightness parameter in the display parameters.

[0047] In one embodiment, the difference between any two adjacent brightness parameters is less than 5 nits.

[0048] Understandably, the smaller the difference between any two brightness parameters that are adjacent in size, the higher the accuracy of the test results, and the better the final display effect of the display device 10.

[0049] Preferably, the difference between any two adjacent brightness parameters is 1 nit.

[0050] For example, in one test parameter, the brightness parameter is one of 1 nit, 2 nit, 3 nit...29 nit and 30 nit.

[0051] In some embodiments, at least one of the grayscale parameter and the brightness parameter is not equal between any two test parameters. A grayscale parameter and a brightness parameter constitute a single test parameter.

[0052] For example, in one embodiment, a total of 70 test parameters are included, comprising 5 grayscale parameters and 14 brightness parameters, corresponding to a total of 70 compensation values. The final first compensation table is shown in Table 1. The 5 grayscale parameters are 16 grayscale (W16), 32 grayscale (W32), 64 grayscale (W64), 128 grayscale (W128), and 255 grayscale (W255), and the 14 brightness parameters are 1 nit, 2 nit, 3 nit, 4 nit, 5 nit, 6 nit, 7 nit, 8 nit, 9 nit, 10 nit, 15 nit, 20 nit, 25 nit, and 30 nit. The 70 compensation values ​​are BC1 to BC70.

[0053] W255 W128 W64 W32 W16 30nit BC1 BC2 BC3 BC4 BC5 25nit BC6 BC7 BC8 BC9 BC10 20nit BC11 BC12 BC13 BC14 BC15 15nit BC16 BC17 BC18 BC19 BC20 10 nits BC21 BC22 BC23 BC24 BC25 9nit BC26 BC27 BC28 BC29 BC30 8nit BC31 BC32 BC33 BC34 BC35 … … … … … … 1nit BC66 BC67 BC68 BC69 BC70

[0054] Table 1

[0055] Understandably, when the grayscale parameter of the test parameters is 255 grayscale and the brightness parameter is 10 nit, the corresponding compensation value is BC21. When the real-time grayscale parameter of the display device 10 is 255 grayscale and the real-time brightness is 10 nit, the display driver module 300 can output the corresponding voltage to the voltage terminal according to the compensation value BC21.

[0056] In one embodiment, step S200 includes steps 210 to S220.

[0057] Step 210: When the display driver module receives the test parameters and the power supply module enters low load mode, it outputs an increasing voltage to the voltage terminal.

[0058] Specifically, the display driver module 300 can start from 0V and gradually increase the output voltage at a certain frequency.

[0059] Step S220: When the power module changes from low load mode to high load mode, obtain the compensation value corresponding to the test parameters based on the voltage output to the voltage terminal of the display driver module.

[0060] Understandably, after executing step S220, the display driver module 300 can record the obtained compensation value along with the corresponding test parameters.

[0061] By executing steps S210 to S220 multiple times with different test parameters, the first compensation table can be obtained.

[0062] Figure 4 A flowchart of a control method provided in an embodiment of this application is shown. For ease of explanation, only the parts relevant to this embodiment are shown, and are described in detail below:

[0063] A control method is applied to a display device 10 as described in any of the above embodiments.

[0064] The control method includes steps S300 to S600.

[0065] Step S300: Using the maximum compensation value corresponding to each grayscale parameter in the first compensation table as the compensation reference value for each grayscale parameter, using the brightness parameter corresponding to each compensation reference value in the first compensation table as the reference brightness for each grayscale parameter, and using the compensation value corresponding to the maximum value of the brightness parameter in the first compensation table as the compensation threshold for each grayscale parameter, a second compensation table is obtained.

[0066] The second compensation table includes the correspondence between each grayscale parameter, the reference brightness of each grayscale parameter, the maximum value of the brightness parameter and the compensation reference value of each grayscale parameter, and the compensation threshold of each grayscale parameter.

[0067] It should be noted that when the display driver module 300 does not compensate for the voltage at the voltage terminal and the grayscale parameters remain unchanged, the power supply module 200 typically operates in high-load mode when the brightness parameter is greater than 30 nits. The power supply module 200 will switch from high-load mode to low-load mode when the brightness parameter decreases to a certain level. As the brightness parameter further decreases, the voltage at the voltage terminal will first decrease linearly and then increase.

[0068] Therefore, in the first compensation table obtained through steps S100 to S200, when the gray level parameter remains unchanged, as the brightness parameter decreases, the compensation value will first increase linearly from 0 and then decrease. Therefore, among the compensation values ​​under the same gray level parameter, there is a maximum compensation value (compensation reference value). Then, the reference brightness corresponding to the gray level parameter can be obtained according to the brightness parameter corresponding to the compensation reference value.

[0069] For example, taking the first compensation table shown in Table 1 as an example, if the compensation value BC21 is the maximum value among the compensation values ​​corresponding to grayscale 255, then the compensation reference value corresponding to grayscale 255 is BC21, the reference brightness corresponding to grayscale 255 is 10 nits, the maximum value of the brightness parameter corresponding to grayscale 255 is 30 nits, and the compensation threshold corresponding to grayscale 255 is BC1. Similarly, the compensation reference value, compensation threshold, reference brightness, and maximum value of the brightness parameter corresponding to each grayscale parameter can be obtained.

[0070] In one embodiment, the final second compensation table is shown in Table 2.

[0071] W255 W128 W64 W32 W16 30nit BC1 BC2 BC3 BC4 BC5 10 nits BC21 BC22 BC23 BC24 BC25

[0072] Table 2

[0073] Compared to the first compensation table, the second compensation table contains less data, which reduces the storage space required.

[0074] In some embodiments, since the brightness corresponding to the maximum compensation value (compensation reference value) is usually the same under different grayscale parameters, the reference brightness corresponding to any one grayscale parameter can be used as the reference brightness corresponding to other grayscale parameters.

[0075] For example, if the reference brightness corresponding to 16 gray levels is determined to be 10 nits, the reference brightness corresponding to each of the other gray level parameters can also be determined to be 10 nits.

[0076] Step S400: When the real-time brightness is less than or equal to the reference brightness, the display driver module determines the corresponding compensation reference value in the second compensation table based on the real-time grayscale, so as to obtain the real-time compensation value based on the compensation reference value.

[0077] Since the compensation benchmark value is the maximum value among all compensation values ​​under the same gray level parameter, the real-time compensation value obtained based on the compensation benchmark value is greater than the corresponding compensation value in the first compensation table.

[0078] For example, taking the second compensation table shown in Table 2 as an example, when the real-time brightness of the display parameter is 5 nits and the real-time grayscale of the display parameter is 255 grayscale levels, the corresponding real-time compensation value is BC21. When the real-time brightness of the display parameter is 8 nits and the real-time grayscale of the display parameter is 128 grayscale levels, the corresponding real-time compensation value is BC22.

[0079] Step S500: When the real-time brightness is greater than the reference brightness, the display driver module determines the corresponding compensation reference value, reference brightness and compensation threshold in the second compensation table according to the real-time grayscale, so as to determine the real-time compensation value based on the real-time brightness, reference brightness, the maximum value of the brightness parameter, the compensation reference value and the compensation threshold.

[0080] Specifically, based on the relationship between the real-time brightness and the reference brightness, and the maximum value of the brightness parameter, a suitable value can be selected as the real-time compensation value from the parameter range between the compensation reference value and the compensation threshold.

[0081] Step S600: The display driver module outputs voltage to the voltage terminal according to the real-time compensation value.

[0082] By displaying the voltage output to the voltage terminal based on the real-time compensation value, the current flowing through the voltage terminal detected by the power supply module 200 can be increased, thereby enabling the power supply module 200 to maintain a high load mode without the need for additional components.

[0083] Meanwhile, when the real-time brightness is greater than the maximum value of the brightness parameter in the first compensation table, the display driver module 300 will stop outputting voltage. Compared with the solution of using a grounding resistor, this can reduce the waste of power and reduce the overall power consumption of the display device 10.

[0084] When the first compensation table lacks a parameter that is exactly equal to the real-time brightness or real-time grayscale, the corresponding real-time compensation value can be obtained through steps S300 to S600, making it more versatile.

[0085] In one embodiment, determining the real-time compensation value in step S500 based on the real-time brightness, reference brightness, the maximum value of the brightness parameter, the compensation reference value, and the compensation threshold includes obtaining the real-time compensation value based on the real-time brightness, reference brightness, the maximum value of the brightness parameter, the compensation reference value, the compensation threshold, and a linear calculation formula.

[0086] Preferably, the linear calculation formula is: Real-time compensation value = Compensation reference value - (Compensation reference value - Compensation threshold) × (Real-time brightness - Reference brightness) ÷ (Maximum value of brightness parameter - Reference brightness).

[0087] For example, taking the second compensation table shown in Table 2 as an example, when the real-time brightness of the display parameter is 20 nits and the real-time grayscale of the display parameter is 255 grayscale, the corresponding real-time compensation value is BC21 - (BC21 - BC1) × (20 nits - 10 nits) ÷ (30 nits - 10 nits).

[0088] In some embodiments, under the same grayscale parameter conditions, when multiple brightness parameters have compensation values ​​equal to the maximum compensation value, the maximum brightness parameter is taken as the reference brightness corresponding to that grayscale parameter, so that the real-time compensation value obtained by steps S300 to S600 is not less than the required compensation value. In this embodiment, step S300 specifically involves: using the maximum compensation value corresponding to each grayscale parameter in the first compensation table as the compensation reference value for each grayscale parameter, using the maximum brightness parameter corresponding to each compensation reference value in the first compensation table as the reference brightness for each grayscale parameter, and using the compensation value corresponding to the maximum value of the brightness parameter in the first compensation table as the compensation threshold for each grayscale parameter, to obtain a second compensation table. For example, taking Table 1 as an example, when BC20 equals BC25 in the compensation values ​​corresponding to 16 grayscale, since the brightness parameters corresponding to BC20 and BC25 are 15 nit and 10 nit respectively, the larger 15 nit is set as the reference brightness corresponding to 16 grayscale.

[0089] In one embodiment, the reference brightness of each grayscale parameter is equal.

[0090] Understandably, if the reference brightness of each grayscale parameter is equal, the amount of data in the compensation table that needs to be stored can be reduced.

[0091] In one embodiment, all compensation thresholds are 0.

[0092] Taking the first compensation table shown in Table 1 as an example, when all compensation thresholds are 0, that is, compensation values ​​BC1, BC2, BC3, BC4, and BC5 are all 0, the power supply module 200 operates in high-load mode when the brightness parameter is 30 nits, and the display driver module 300 does not need to compensate the voltage.

[0093] By increasing the range of brightness parameters in the first compensation table, the compensation values ​​required for the power module 200 to operate under different brightness parameters can be obtained more comprehensively, especially the compensation values ​​required under low load conditions.

[0094] Besides the compensation threshold being 0, other compensation values ​​in the first compensation table can also be 0.

[0095] Meanwhile, since the minimum compensation value actually required increases linearly when the real-time brightness is greater than the reference brightness, after increasing the range of brightness parameter values, the real-time compensation value obtained through step S500 can always be no less than the minimum compensation value actually required, so as to ensure that the power module 200 always maintains a high load mode.

[0096] The display device 10 in this application embodiment includes, but is not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0097] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0098] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0099] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A display device (10), characterized in that, The display device (10) includes a display panel (100), a power module (200), and a display driver module (300). The voltage terminal of the power module (200) is connected to the display panel (100) for receiving a negative voltage. The power module (200) is configured to enter a low-load mode when the electrical parameters at the voltage terminal are lower than a preset threshold, and to enter a high-load mode when the electrical parameters at the voltage terminal are not lower than the preset threshold. The display driver module (300) is connected to the voltage terminal. The display driver module (300) is used to output voltage to the voltage terminal according to the display parameters so that the power supply module (200) maintains a high load mode. When the display driver module (300) does not output voltage to the voltage terminal, if the power supply module (200) is working in a low load mode, the display driver module (300) is also used to output voltage to the voltage terminal according to the compensation value until the power supply module (200) enters a high load mode. The method for obtaining the compensation value includes: configuring the display device with different test parameters, wherein the test parameters include grayscale parameters and brightness parameters, obtaining the compensation value corresponding to each of the test parameters, and obtaining a first compensation table, wherein the compensation value is obtained according to the minimum voltage output by the display driver module (300) to the voltage terminal when the power supply module (200) is working in a low load mode and the power supply module (200) changes from a low load mode to a high load mode. The first compensation table includes the correspondence between each test parameter and each compensation value.

2. A method for acquiring compensation data, characterized in that, Applied to a display device (10), the display device (10) includes a display panel (100), a power module (200) and a display driver module (300). The voltage terminal of the power module (200) is connected to the display panel (100) and is used to receive a negative voltage. The power module (200) is configured to enter a low-load mode when the electrical parameters at the voltage terminal are lower than a preset threshold, and to enter a high-load mode when the electrical parameters at the voltage terminal are not lower than the preset threshold. The display driving module (300) is connected to the voltage terminal and is used to output voltage to the voltage terminal according to the display parameters so that the power module (200) maintains a high-load mode. The method for obtaining the compensation data includes: The display device (10) is configured with different test parameters; wherein the test parameters include grayscale parameters and brightness parameters; Obtain the compensation value corresponding to each of the test parameters and obtain a first compensation table; wherein the compensation value is obtained based on the minimum voltage output by the display driver module (300) to the voltage terminal when the power module (200) is working in the low load mode, causing the power module (200) to change from the low load mode to the high load mode, and the first compensation table includes the correspondence between each of the test parameters and each of the compensation values.

3. The compensation data acquisition method as described in claim 2, characterized in that, The grayscale parameters include 8 grayscale, 16 grayscale, 32 grayscale, 64 grayscale, 128 grayscale, and 255 grayscale.

4. The compensation data acquisition method as described in claim 2, characterized in that, The grayscale parameters include 16 grayscale, 32 grayscale, 64 grayscale, 128 grayscale, and 255 grayscale.

5. The compensation data acquisition method as described in claim 2, characterized in that, The brightness parameter ranges from 1 nit to 50 nits.

6. The compensation data acquisition method as described in claim 2, characterized in that, The brightness parameter ranges from 1 nit to 30 nits.

7. The compensation data acquisition method as described in claim 2, characterized in that, Among the different test parameters, the difference between any two adjacent brightness parameters is less than 5 nits.

8. The compensation data acquisition method according to any one of claims 2 to 7, characterized in that, The step of obtaining the compensation value corresponding to each of the test parameters includes: When the display driver module (300) receives the test parameters and the power supply module (200) enters the low load mode, it outputs an increasing voltage to the voltage terminal. When the power module (200) changes from the low load mode to the high load mode, the compensation value corresponding to the test parameter is obtained according to the voltage output to the voltage terminal by the display driver module (300).

9. A control method, characterized in that, Applied to a display device (10), the display device (10) includes a display panel (100), a power module (200) and a display driver module (300). The voltage terminal of the power module (200) is connected to the display panel (100) and is used to receive a negative voltage. The power module (200) is configured to enter a low-load mode when the electrical parameters at the voltage terminal are lower than a preset threshold, and to enter a high-load mode when the electrical parameters at the voltage terminal are not lower than the preset threshold. The display driving module (300) is connected to the voltage terminal and is used to output voltage to the voltage terminal according to the display parameters so that the power module (200) maintains a high-load mode. The control method includes: According to the first compensation table as described in any one of claims 2 to 8, a second compensation table is obtained by taking the maximum compensation value corresponding to each grayscale parameter in the first compensation table as the compensation reference value for each grayscale parameter, taking the brightness parameter corresponding to each compensation reference value in the first compensation table as the reference brightness for each grayscale parameter, and taking the compensation value corresponding to the maximum value of the brightness parameter in the first compensation table as the compensation threshold for each grayscale parameter; wherein, the second compensation table includes the correspondence between each grayscale parameter, the reference brightness of each grayscale parameter, the maximum value of the brightness parameter, the compensation reference value of each grayscale parameter, and the compensation threshold of each grayscale parameter; When the real-time brightness is less than or equal to the reference brightness, the display driving module (300) determines the corresponding compensation reference value in the second compensation table according to the real-time grayscale, so as to obtain the real-time compensation value according to the compensation reference value; When the real-time brightness is greater than the reference brightness, the display driver module (300) determines the corresponding compensation reference value, reference brightness and compensation threshold in the second compensation table according to the real-time grayscale, so as to determine the real-time compensation value according to the real-time brightness, the reference brightness, the maximum value of the brightness parameter, the compensation reference value and the compensation threshold; The display driver module (300) outputs voltage to the voltage terminal according to the real-time compensation value.

10. The control method as described in claim 9, characterized in that, The step of determining the real-time compensation value based on the real-time brightness, the reference brightness, the maximum value of the brightness parameter, the compensation reference value, and the compensation threshold includes: The real-time compensation value is obtained based on the real-time brightness, the reference brightness, the maximum value of the brightness parameter, the compensation reference value, the compensation threshold, and the linear calculation formula.

11. The control method as described in claim 10, characterized in that, The linear calculation formula is as follows: Real-time compensation value = Compensation reference value - (Compensation reference value - Compensation threshold) × (Real-time brightness - Reference brightness) ÷ (Maximum value of brightness parameter - Reference brightness).

12. The control method as described in claim 9, characterized in that, The reference brightness of each of the grayscale parameters is equal.

13. The control method as described in claim 9, characterized in that, All of the aforementioned compensation thresholds are 0.

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