Display driving method and device

Abstract

This application discloses a display driving method and device, comprising: obtaining the current illumination intensity of the display screen's environment and the display brightness of initial image data; sequentially performing multiple compensation operations on the initial image data to generate compensated image data, the multiple compensation operations including color mapping and pixel drive current compensation; and comparing the current illumination intensity with a first threshold to obtain a first comparison result and the display brightness with a second threshold to obtain a second comparison result, and controlling whether to skip at least one of the color mapping and pixel drive current compensation operations when generating the compensated image data based on the first and second comparison results. This application substantially does not increase the integrated area of ​​the display driving device and reduces power consumption while ensuring the display compensation effect.

Description

Technical Field

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

[0002] Common electronic devices, based on display type, include LCD, LED, and OLED displays. OLED displays are currently the dominant trend due to their self-luminescence, low power consumption, high contrast, wide color gamut, wide viewing angles, thinness, and fast response times.

[0003] OLED display devices utilize DDICs (Display Driver Integrated Circuits) to provide wide color gamut, high-fidelity image data. Specifically, DDICs can drive the display (displaying image content) and optimize the display (enhancing the display effect). Power consumption, performance, and integration area are the three most important indicators in DDIC design and are also the three key factors in measuring DDIC performance. These three indicators are often in a trade-off relationship, and balancing them is a key consideration when designing a DDIC.

[0004] In some mobile electronic devices, it is usually necessary to reduce power consumption as much as possible without substantially increasing the integrated area of ​​DDIC and ensuring normal screen display, so as to improve the user experience satisfaction of the electronic device. Summary of the Invention

[0005] In order to solve the above technical problems, the present application provides a display driving method and device that can reduce power consumption.

[0006] According to a first aspect of an embodiment of the present application, there is provided a display driving method, comprising:

[0007] Obtain the current light intensity of the display screen's environment and the display brightness of the initial image data;

[0008] Performing multiple compensation operations on the initial image data in sequence to generate compensated image data, wherein the multiple compensation operations include color mapping and pixel driving current compensation; and

[0009] The current light intensity is compared with a first threshold to obtain a first comparison result, and the display brightness is compared with a second threshold to obtain a second comparison result, and according to the first comparison result and the second comparison result, whether to skip at least one compensation operation of color mapping and pixel drive current compensation when generating the compensated image data is controlled.

[0010] Optionally, when the first comparison result indicates that the current illumination intensity is greater than a first threshold and the second comparison result indicates that the display brightness is less than a second threshold, the color mapping compensation operation is skipped; otherwise, all compensation operations are performed in sequence.

[0011] Optionally, when the first comparison result indicates that the current illumination intensity is greater than a first threshold and the second comparison result indicates that the display brightness is less than a second threshold, the pixel driving current compensation operation is further skipped.

[0012] Optionally, the multiple compensation operations further include contrast adjustment, sub-pixel rendering, pixel overdrive voltage compensation, and display spot compensation. The steps of sequentially performing the multiple compensation operations on the initial image data to generate compensated image data include:

[0013] The initial image data is subjected to contrast adjustment, color mapping, sub-pixel rendering, pixel drive current compensation, pixel overdrive voltage compensation, and display spot compensation in sequence to generate the compensated image data.

[0014] Optionally, the step of generating the compensated image data includes:

[0015] adjusting the contrast of the initial image data according to the current light intensity and generating first intermediate image data;

[0016] Performing color space mapping on the first intermediate image data to generate second intermediate image data;

[0017] performing sub-pixel rendering processing on the second intermediate image data to generate third intermediate image data;

[0018] adjusting a pixel driving current in the third intermediate image data to compensate for a voltage drop difference among pixel circuits in the display screen and generating fourth intermediate image data;

[0019] Adjusting the pixel overdrive voltage in the fourth intermediate image data to compensate for the response difference of each pixel circuit in the display screen and generating fifth intermediate image data; and

[0020] The brightness of the fifth intermediate image data is adjusted to compensate for the display brightness difference of the display screen and generate the compensated image data.

[0021] According to a second aspect of an embodiment of the present application, there is provided a display driving device, comprising:

[0022] a display compensation module, performing multiple compensation operations on the initial image data to generate compensated image data, wherein the multiple compensation operations include color mapping and pixel drive current compensation;

[0023] A detection module, which collects the current light intensity of the environment where the display screen is located, and obtains the display brightness of the initial image data; and

[0024] The display control module compares the current light intensity with a first threshold value to obtain a first comparison result, and compares the display brightness with a second threshold value to obtain a second comparison result, and controls the display compensation module whether to skip at least one compensation operation of color mapping and pixel drive current compensation based on the first comparison result and the second comparison result.

[0025] Optionally, when the first comparison result indicates that the current light intensity is greater than a first threshold and the second comparison result indicates that the display brightness is less than a second threshold, the display control module controls the display compensation module to skip the color mapping compensation operation; otherwise, the display compensation module performs all compensation operations in sequence.

[0026] Optionally, when the first comparison result indicates that the current illumination intensity is greater than a first threshold and the second comparison result indicates that the display brightness is less than a second threshold, the display control module further controls the display compensation module to skip a pixel driving current compensation operation.

[0027] Optionally, the multiple compensation operations also include contrast adjustment, sub-pixel rendering, pixel over-drive voltage compensation, and display spot compensation. The display compensation module performs contrast adjustment, color mapping, sub-pixel rendering, pixel drive current compensation, pixel over-drive voltage compensation, and display spot compensation on the initial image data in sequence to generate the compensated image data.

[0028] Optionally, the display compensation module includes:

[0029] a sunlight readability enhancement unit, configured to adjust the contrast of the initial image data according to the current light intensity and generate first intermediate image data;

[0030] a color mapping unit, connected to the sunlight readability enhancement unit, and performing color space mapping on the first intermediate image data to generate second intermediate image data;

[0031] a sub-pixel rendering unit, connected to the color mapping unit, and performing sub-pixel rendering processing on the second intermediate image data to generate third intermediate image data;

[0032] a pixel driving current compensation unit, connected to the sub-pixel rendering unit, configured to adjust the pixel driving current in the third intermediate image data to compensate for a voltage drop difference between pixel circuits in the display screen and generate fourth intermediate image data;

[0033] a pixel overdriving voltage compensation unit, connected to the pixel driving current compensation unit, configured to adjust the pixel overdriving voltage in the fourth intermediate image data to compensate for a response difference between pixel circuits in the display screen and generate fifth intermediate image data; and

[0034] A display spot compensation unit is connected to the pixel over-driving voltage compensation unit and is used to adjust the brightness of the fifth intermediate image data to compensate for the display brightness difference of the display screen and generate the compensated image data.

[0035] The display driver method and device provided herein control whether to skip at least one compensation operation when generating compensated image data based on initial image data, based on the comparison results of the current light intensity with a first threshold and the comparison results of the display brightness with a second threshold. This method skips at least one of the compensation operations, color mapping and pixel drive current compensation, when the ambient light intensity is higher than the first threshold and the display brightness is lower than the second threshold. This method substantially does not increase the integrated area of ​​the display driver device, and reduces power consumption while ensuring display compensation effectiveness.

[0036] It should be noted that the above general description and the following detailed description are merely exemplary and explanatory and do not limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram showing a display driving device provided according to an embodiment of the present application is shown;

[0038] Figure 2 A schematic diagram showing a flow chart of a display driving method provided according to an embodiment of the present application is shown;

[0039] Figure 3 A schematic diagram of a process for generating compensated image data according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0040] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in various forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0041] Figure 1 A schematic diagram of a display driving device provided according to an embodiment of the present application is shown.

[0042] The display driver provided in this application has at least display control, display optimization, and display compensation functions. The display control function refers to driving the pixel array in the display screen to achieve image display. The display optimization function, for example, refers to processing image data through an optimization algorithm to enhance display color, thereby achieving color calibration and control. The display compensation function refers to compensating image data to avoid display anomalies caused by factors such as manufacturing processes. The following embodiments mainly describe a technical solution for reducing power consumption of a display driver device based on achieving the display compensation function.

[0043] The display driver provided in this application is described using an OLED display device as an example. The OLED display device includes, for example, mobile phones, watches, tablets, laptops, foldable screen terminals, etc., which have high power consumption requirements.

[0044] See also Figure 1 The display driving device includes a display compensation module 110 , a detection module 120 and a display control module 130 .

[0045] The display compensation module 110 is used to implement a display compensation function, and is used to perform various compensation operations on the initial image data data1 to generate compensated image data data2. These compensation operations include contrast adjustment, color mapping, pixel drive current compensation, pixel overdrive voltage compensation, and display speckle compensation to generate the compensated image data. The initial image data data1 is, for example, image data to be displayed provided by a main control system, or image data generated after display optimization of the aforementioned image data to be displayed. The compensated image data data2 is, for example, provided to a display optimization module of a display driver device or directly output to a display screen for display.

[0046] The detection module 120 collects the current light intensity of the environment in which the display screen is located and obtains the display brightness of the initial image data data1. Furthermore, the detection module 120 may include, for example, a light sensing unit to collect and obtain the light intensity of the current environment. The detection module 120 may, for example, utilize a conversion unit to convert the grayscale values ​​of the initial image data data1 into corresponding brightness values, and utilize a calculation unit to calculate the display brightness based on the brightness values. The display brightness may, for example, be the total brightness value of a frame of image or the average brightness values ​​of multiple regions within a frame of image. The light sensing unit may, for example, include a photoresistor.

[0047] The display control module 130 is connected to the detection module 120 and is configured to compare the current light intensity with a first threshold value to obtain a first comparison result, and to compare the display brightness with a second threshold value to obtain a second comparison result. Based on the first and second comparison results, the display compensation module 110 is configured to control whether to skip at least one of the following compensation operations: color mapping and pixel drive current compensation. For example, when the display screen is dark or bright, the display control module 130 may skip at least one compensation operation whose display effect is not obvious or imperceptible to the human eye, thereby reducing power consumption.

[0048] Furthermore, if the first comparison result indicates that the current light intensity is greater than a first threshold and the second comparison result indicates that the display brightness is less than a second threshold, the display control module 130 controls the display compensation module 110 to skip the color mapping compensation operation. Otherwise, the display compensation module 110 sequentially performs all compensation operations. Specifically, if the current light intensity is greater than the first threshold and the display brightness is less than the second threshold, the display control module 130 outputs a control signal to disable the color mapping compensation operation. Furthermore, when the display compensation module 110 generates compensated image data data2 based on the initial image data data1, the intermediate image data generated after the contrast adjustment compensation operation directly undergoes pixel drive current compensation after a certain delay. In other cases except those where the current light intensity is greater than the first threshold and the display brightness is less than the second threshold, the display control module 130 does not disable the color mapping compensation operation, and the display compensation module 110 does not skip any compensation operations when generating compensated image data data2 based on the initial image data data1.

[0049] Furthermore, if the first comparison result indicates that the current light intensity is greater than a first threshold and the second comparison result indicates that the display brightness is less than a second threshold, the display control module 130 controls the display compensation module 110 to skip the color mapping compensation operation and the pixel drive current compensation operation. Otherwise, the display compensation module 110 sequentially performs all compensation operations. Specifically, if the current light intensity is greater than the first threshold and the display brightness is less than the second threshold, the display control module 130, for example, outputs a control signal to simultaneously disable the color mapping compensation operation and the pixel drive current compensation operation. Furthermore, when the display compensation module 110 generates compensated image data data2 based on the initial image data data1, the intermediate image data generated after the contrast adjustment compensation operation directly undergoes pixel overdrive voltage compensation after a certain delay. In other cases except those where the current light intensity is greater than the first threshold and the display brightness is less than the second threshold, the display control module 130 does not disable the color mapping compensation operation and the pixel drive current compensation operation, and the display compensation module 110 does not skip any compensation operations when generating compensated image data data2 based on the initial image data data1.

[0050] Furthermore, when the display screen of the OLED display device including the display driver device of the present application improves the resolution by reducing the density of pixels, that is, the number of sub-pixel structures of corresponding colors in the display screen is less than the number of sub-pixels in the input image data. For example, when the number of red sub-pixel structures in the display screen is lower than the number of red pixels in the input image data, the number of blue sub-pixel structures in the display screen is lower than the number of blue pixels in the input image data, and the number of green sub-pixel structures in the display screen is equal to the number of green pixels in the input image data, the display compensation module 110 is also required to perform a sub-pixel rendering compensation operation on the intermediate image data to reduce the impact of the color shift phenomenon on the display effect. Specifically, for example, the display compensation module 110 also includes performing a sub-pixel rendering compensation operation between the color mapping compensation operation and the pixel drive current compensation operation when compensating the image data.

[0051] Exemplarily, the display compensation module 110 sequentially performs contrast adjustment, color mapping, sub-pixel rendering, pixel drive current compensation, pixel overdrive voltage compensation, and display speckle compensation on the initial image data data1 to generate compensated image data data2. The display compensation module 110 includes a sunlight readability enhancement unit 111, a color mapping unit 112, a sub-pixel rendering unit 113, a pixel drive current compensation unit 114, a pixel overdrive voltage compensation unit 115, and a display speckle compensation unit 116.

[0052] Sunlight readability enhancement unit 111 adjusts the contrast of initial image data data1 based on the current light intensity and generates first intermediate image data to improve the readability of the image displayed on the display screen under outdoor ambient lighting. Furthermore, contrast refers to the measurement of the brightness levels between the brightest white and darkest black in the bright and dark areas of an image. A larger difference indicates greater contrast, while a smaller difference indicates less contrast.

[0053] The color mapping unit 112 is connected to the sunlight readability enhancement unit 111 and performs color space mapping on the first intermediate image data to generate second intermediate image data. Furthermore, the color mapping unit 112 performs color matching on the first intermediate image data to address sudden and significant color fluctuations. This increases the display's displayable color range and allows for matching color spaces for different displays.

[0054] The sub-pixel rendering unit 113 is connected to the color mapping unit 112 and performs sub-pixel rendering on the second intermediate image data to generate third intermediate image data. Furthermore, the sub-pixel rendering unit 113 obtains the brightness of each sub-pixel structure on the display screen where the number of sub-pixel structures corresponding to the corresponding colors is less than the number of sub-pixels in the input image pixel, for example, based on the image brightness of the sub-pixels corresponding to the corresponding colors and the compensation coefficient. This compensation reduces the impact of color shift on the display by compensating the brightness of the sub-pixel structures.

[0055] The pixel drive current compensation unit 114 is connected to the sub-pixel rendering unit 113 and is used to adjust the pixel drive current in the third intermediate image data to compensate for the voltage drop differences between pixel circuits in the display screen and generate fourth intermediate image data. Furthermore, an OLED display screen includes multiple pixel circuits arranged in an array. The different voltage drops between each pixel circuit can cause brightness distortion when driving the OLED. The pixel drive current compensation unit 114 adjusts the pixel drive current in the third intermediate image data to compensate for the voltage drop differences between pixel circuits in the display screen.

[0056] The pixel overdrive voltage compensation unit 115 is connected to the pixel drive current compensation unit 114 and is used to adjust the pixel overdrive voltage in the fourth intermediate image data to compensate for the response differences between the pixel circuits in the display screen and generate the fifth intermediate image data. Furthermore, due to the inconsistent response speeds of the pixel circuits in the display screen, the problem of display smearing may occur. The pixel overdrive voltage compensation unit 115 uses the overdrive voltage to accelerate the pixel circuit response and reduce the effect of display smearing.

[0057] The display flare compensation unit 116 is connected to the pixel overdrive voltage compensation unit 115 and is used to adjust the brightness of the fifth intermediate image data to compensate for variations in display brightness across the display screen and generate compensated image data. Furthermore, due to process variations in thin-film transistors within each pixel circuit, screen flare can occur. By compensating for brightness deviations, the display flare compensation unit 116 resolves bright or dark spots on the display screen, achieving uniform display brightness.

[0058] Figure 2 A flow chart of a display driving method according to an embodiment of the present application is shown. Figure 3 A schematic diagram of a process for generating compensated image data according to an embodiment of the present application is shown.

[0059] See also Figure 2 , the display driving method includes the following steps:

[0060] Step S100: Acquire the current ambient light intensity of the display screen and the display brightness of the initial image data. For example, the ambient light intensity is acquired, the grayscale values ​​of the initial image data data1 are converted into corresponding brightness values, and the display brightness is calculated. The display brightness can be, for example, the total brightness value of a frame of image or the average brightness values ​​of multiple regions within a frame of image.

[0061] Step S200: The initial image data is subjected to a plurality of compensation operations to generate compensated image data. The compensation operations include color mapping and pixel drive current compensation. Furthermore, the compensation operations also include contrast adjustment, pixel overdrive voltage compensation, and display spot compensation.

[0062] Step S300: Compare the current light intensity with the first threshold to obtain a first comparison result and compare the display brightness with the second threshold to obtain a second comparison result, and control whether to skip at least one compensation operation of color mapping and pixel drive current compensation when generating compensated image data based on the first comparison result and the second comparison result.

[0063] Furthermore, when the first comparison result indicates that the current illumination intensity is greater than the first threshold and the second comparison result indicates that the display brightness is less than the second threshold, the color mapping compensation operation is skipped; otherwise, all compensation operations are performed in sequence.

[0064] Furthermore, when the first comparison result indicates that the current light intensity is greater than the first threshold and the second comparison result indicates that the display brightness is less than the second threshold, the color mapping compensation operation and the pixel driving current compensation operation are skipped; otherwise, all compensation operations are performed in sequence.

[0065] Furthermore, when a display screen employing the above-described display driving method reduces the number of sub-pixel structures in some colors to improve the display screen's resolution, generating compensated image data further includes performing a sub-pixel rendering compensation operation between the color mapping compensation operation and the pixel drive current compensation operation. Step S200 includes sequentially performing contrast adjustment, color mapping, sub-pixel rendering, pixel drive current compensation, pixel overdrive voltage compensation, and display speckle compensation on the initial image data to generate the compensated image data.

[0066] For example, see Figure 3 , the method for generating compensated image data comprises the following steps:

[0067] Step S211 : adjusting the contrast of the initial image data according to the current light intensity and generating first intermediate image data.

[0068] Step S212: Perform color space mapping on the first intermediate image data to generate second intermediate image data.

[0069] Step S213: performing sub-pixel rendering processing on the second intermediate image data to generate third intermediate image data.

[0070] Step S214: adjusting the pixel driving current in the third intermediate image data to compensate for the voltage drop difference of each pixel circuit in the display screen and generating fourth intermediate image data.

[0071] Step S215: adjusting the pixel over-driving voltage in the fourth intermediate image data to compensate for the response difference of each pixel circuit in the display screen and generating fifth intermediate image data.

[0072] Step S216 : adjusting the brightness of the fifth intermediate image data to compensate for the display brightness difference of the display screen and generate compensated image data.

[0073] Exemplarily, in the display driving method of the present application, when the first comparison result indicates that the current light intensity is greater than a first threshold and the second comparison result indicates that the display brightness is less than a second threshold, the first intermediate image data skips the color mapping compensation operation and directly enters the sub-pixel rendering compensation operation after a certain delay to generate intermediate image data after sub-pixel rendering processing. Furthermore, when the first comparison result indicates that the current light intensity is greater than the first threshold and the second comparison result indicates that the display brightness is less than the second threshold, the intermediate image data after sub-pixel rendering processing skips the pixel drive current compensation operation and directly enters the pixel overdrive voltage compensation operation after a certain delay to generate intermediate image data after pixel overdrive voltage adjustment.

[0074] An embodiment of the present application further provides a display device, comprising the display driving apparatus as described above, or comprising a device for executing the display driving method as described above.

[0075] It should be noted that the numerical values ​​in this article are only used for exemplary description. In other embodiments of this application, other numerical values ​​can also be sampled to implement this solution. The specific settings should be reasonable according to the current situation, and this application does not limit this.

[0076] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present application and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all embodiments here. Obvious variations or modifications arising therefrom remain within the scope of protection of this application.

[0077] It should also be understood that the terms and expressions used herein are for descriptive purposes only, and the one or more embodiments of this specification should not be limited to these terms and expressions. The use of these terms and expressions does not mean to exclude any equivalent features of the illustrations and descriptions (or portions thereof), and it should be recognized that various modifications that may exist should also be included in the scope of the claims. Other modifications, variations, and substitutions may also exist. Accordingly, the claims should be deemed to cover all such equivalents.

Claims

1. A display driving method, wherein: include: Obtain the current light intensity of the display screen's environment and the display brightness of the initial image data; performing multiple compensation operations on the initial image data in sequence to generate compensated image data, wherein the multiple compensation operations include color mapping and pixel drive current compensation; as well as The current light intensity is compared with a first threshold to obtain a first comparison result, and the display brightness is compared with a second threshold to obtain a second comparison result. When the first comparison result represents that the current light intensity is greater than the first threshold and the second comparison result represents that the display brightness is less than the second threshold, at least one compensation operation of color mapping and pixel drive current compensation is skipped when generating the compensated image data.

2. The display driving method according to claim 1, wherein: If the first comparison result indicates that the current illumination intensity is greater than a first threshold and the second comparison result indicates that the display brightness is less than a second threshold, the color mapping compensation operation is skipped; otherwise, all compensation operations are performed in sequence.

3. The display driving method according to claim 2, wherein: When the first comparison result indicates that the current illumination intensity is greater than a first threshold and the second comparison result indicates that the display brightness is less than a second threshold, the pixel driving current compensation operation is further skipped.

4. The display driving method according to claim 1, wherein: The various compensation operations also include contrast adjustment, sub-pixel rendering, pixel overdrive voltage compensation, and display spot compensation. The steps of sequentially performing the various compensation operations on the initial image data to generate compensated image data include: The initial image data is subjected to contrast adjustment, color mapping, sub-pixel rendering, pixel drive current compensation, pixel overdrive voltage compensation, and display spot compensation in sequence to generate the compensated image data.

5. The display driving method according to claim 4, wherein: The step of generating the compensated image data comprises: adjusting the contrast of the initial image data according to the current light intensity and generating first intermediate image data; Performing color space mapping on the first intermediate image data to generate second intermediate image data; performing sub-pixel rendering processing on the second intermediate image data to generate third intermediate image data; adjusting a pixel driving current in the third intermediate image data to compensate for a voltage drop difference among pixel circuits in the display screen and generating fourth intermediate image data; Adjusting the pixel overdrive voltage in the fourth intermediate image data to compensate for the response difference of each pixel circuit in the display screen and generating fifth intermediate image data; and The brightness of the fifth intermediate image data is adjusted to compensate for the display brightness difference of the display screen and generate the compensated image data.

6. A display driving device, wherein: include: a display compensation module, performing multiple compensation operations on the initial image data to generate compensated image data, wherein the multiple compensation operations include color mapping and pixel drive current compensation; A detection module collects the current light intensity of the environment where the display screen is located, and obtains the display brightness of the initial image data; as well as The display control module compares the current light intensity with a first threshold to obtain a first comparison result, and compares the display brightness with a second threshold to obtain a second comparison result, and controls the display compensation module to skip at least one compensation operation of color mapping and pixel drive current compensation when the first comparison result indicates that the current light intensity is greater than the first threshold and the second comparison result indicates that the display brightness is less than the second threshold.

7. The display driving device according to claim 6, wherein: When the first comparison result indicates that the current light intensity is greater than a first threshold and the second comparison result indicates that the display brightness is less than a second threshold, the display control module controls the display compensation module to skip the color mapping compensation operation; otherwise, the display compensation module performs all compensation operations in sequence.

8. The display driving device according to claim 7, wherein: When the first comparison result indicates that the current illumination intensity is greater than a first threshold and the second comparison result indicates that the display brightness is less than a second threshold, the display control module further controls the display compensation module to skip a pixel driving current compensation operation.

9. The display driving device according to claim 6, wherein: The various compensation operations also include contrast adjustment, sub-pixel rendering, pixel over-drive voltage compensation, and display spot compensation. The display compensation module performs contrast adjustment, color mapping, sub-pixel rendering, pixel drive current compensation, pixel over-drive voltage compensation, and display spot compensation on the initial image data in sequence to generate the compensated image data.

10. The display driving device according to claim 9, wherein: The display compensation module includes: a sunlight readability enhancement unit, configured to adjust the contrast of the initial image data according to the current light intensity and generate first intermediate image data; a color mapping unit, connected to the sunlight readability enhancement unit, and performing color space mapping on the first intermediate image data to generate second intermediate image data; a sub-pixel rendering unit, connected to the color mapping unit, and performing sub-pixel rendering processing on the second intermediate image data to generate third intermediate image data; a pixel driving current compensation unit, connected to the sub-pixel rendering unit, configured to adjust the pixel driving current in the third intermediate image data to compensate for a voltage drop difference between pixel circuits in the display screen and generate fourth intermediate image data; a pixel overdriving voltage compensation unit, connected to the pixel driving current compensation unit, configured to adjust the pixel overdriving voltage in the fourth intermediate image data to compensate for a response difference between pixel circuits in the display screen and generate fifth intermediate image data; and A display spot compensation unit is connected to the pixel over-driving voltage compensation unit and is used to adjust the brightness of the fifth intermediate image data to compensate for the display brightness difference of the display screen and generate the compensated image data.

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