Method and device for extending color depth of display device, storage medium and display device

Abstract

The application discloses a color depth extension method and device of a display device, a storage medium and an electronic device. The method comprises the following steps: acquiring a target color depth value, and maximum data voltage, minimum data voltage and frame interval duration of the display device; determining a color step set of each color channel corresponding to the target color depth value; determining a gray scale voltage pulse corresponding to each color step according to the total number of color steps in the color step set, the frame interval duration, the maximum data voltage and the minimum data voltage, and the total duration of each gray scale voltage pulse is equal to the frame interval duration; and controlling the display device to display a picture according to the gray scale voltage pulse and the color step set, so that the color depth of the display device is extended from an actual color depth value to the target color depth value, the display effect of high color depth can be realized by using a low color depth driving circuit board, the design complexity of the driving circuit board is not increased, the hardware design difficulty of the display device is reduced, and the hardware cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, and particularly relates to a color depth extension method and device of a display device, a storage medium and the display device. BACKGROUND

[0002] The color depth requirements for display products in the current market are various, including the 6bit and 8bit color depths that are common for mass consumer products, and the 10bit or even higher color depths that are required for some professional applications and submarkets.

[0003] Color depth, also known as color bit depth, is a unit for representing the number of colors of a digital image by using the number of bits, which refers to the number of bits used to represent the color of a single pixel in a bitmap or video frame buffer, or the number of bits used for each color component of a single pixel. The size of the color depth value greatly affects the display effect. Currently, the size of the color depth value of a display product depends on the design of a driving circuit. Different color depth values require different driving circuit boards to be designed, and the larger the color depth value, the more complex the design of the driving circuit board, and the higher the manufacturing cost of the display product. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a color depth extension method and device of a display device, a storage medium and the display device, which can realize a high color depth display effect by using a low color depth driving circuit board, and is conducive to reducing the manufacturing cost.

[0005] In a first aspect, the present application provides a color depth extension device of a display device, comprising:

[0006] obtaining a target color depth value, and a maximum data voltage, a minimum data voltage and an interframe interval duration of the display device, the target color depth value being greater than an actual color depth value of the display device;

[0007] determining a color step set of each color channel corresponding to the target color depth value, the color step set comprising a plurality of color steps;

[0008] determining a gray scale voltage pulse corresponding to each color step according to the total number of color steps in the color step set, the interframe interval duration, the maximum data voltage and the minimum data voltage, and the total duration of each gray scale voltage pulse being equal to the interframe interval duration;

[0009] controlling the display device to display a picture according to the gray scale voltage pulse and the color step set, so as to extend the color depth of the display device from the actual color depth value to the target color depth value.

[0010] The color depth extension method for display devices provided in this application obtains a target color depth value, as well as the maximum data voltage, minimum data voltage, and inter-frame interval duration of the display device. The target color depth value is greater than the actual color depth value of the display device. It determines a set of color levels for each color channel corresponding to the target color depth value, where each set includes multiple color levels. Based on the total number of color levels in the set, the inter-frame interval duration, the maximum data voltage, and the minimum data voltage, it determines a grayscale voltage pulse corresponding to each color level, where the total duration of each grayscale voltage pulse is equal to the inter-frame interval duration. Based on the grayscale voltage pulses and the color level set, it controls the display device to display an image, thereby extending the color depth of the display device from the actual color depth value to the target color depth value. This allows for the achievement of a high color depth display effect using a low color depth driver circuit board without increasing the design complexity of the driver circuit board, thus reducing the hardware design difficulty and cost of the display device.

[0011] According to the color depth extension method for a display device provided in this application, determining the grayscale voltage pulse corresponding to each color level based on the total number of color levels in the color level set, the inter-frame interval duration, the maximum data voltage, and the minimum data voltage includes:

[0012] The inter-frame interval duration is divided into multiple sub-interval durations, and the number of the multiple sub-interval durations is equal to the total number.

[0013] Based on the sub-interval duration, the maximum data voltage, and the minimum data voltage, a grayscale voltage pulse corresponding to each color level is generated;

[0014] The grayscale voltage pulse includes multiple consecutive sub-pulses, the number of which is equal to the number of sub-interval durations, the duration of each sub-pulse is equal to the duration of the sub-interval, and the voltage of each sub-pulse is either the maximum data voltage or the minimum data voltage.

[0015] According to the color depth extension method for a display device provided in this application, the step of generating a grayscale voltage pulse corresponding to each color level based on the sub-interval duration, the maximum data voltage, and the minimum data voltage includes:

[0016] Determine the first occurrence count of the maximum data voltage and the second occurrence count of the minimum data voltage for each color level in the color level set, and the sum of the first occurrence count and the second occurrence count for each color level is equal to the total number;

[0017] Based on the maximum data voltage, the minimum data voltage, the sub-interval duration, the first occurrence count, and the second occurrence count, a grayscale voltage pulse corresponding to each color level is determined. The number of sub-pulses in the grayscale voltage pulse with a voltage equal to the maximum data voltage is equal to the corresponding first occurrence count, and the number of sub-pulses in the grayscale voltage pulse with a voltage equal to the minimum data voltage is equal to the corresponding second occurrence count.

[0018] According to the color depth expansion method for display devices provided in this application, determining the first occurrence count of the maximum data voltage and the second occurrence count of the minimum data voltage corresponding to each color level in the color level set includes:

[0019] The first occurrence count of the maximum data voltage corresponding to each color level in the color level set is determined by an incremental method, and the first occurrence count of the color level with the largest value in the color level set is equal to the total number.

[0020] The second occurrence count of the minimum data voltage corresponding to each color level in the color level set is determined by a decreasing method, and the second occurrence count of the color level with the smallest value in the color level set is equal to the total number.

[0021] According to the color depth extension method for a display device provided in this application, determining the grayscale voltage pulse corresponding to each color level based on the total number of color levels in the color level set, the inter-frame interval duration, the maximum data voltage, and the minimum data voltage includes:

[0022] Determine the voltage ranges corresponding to the maximum data voltage and the minimum data voltage;

[0023] Using a preset voltage calculation formula, the equivalent voltage corresponding to each color level in the color level set is determined from the voltage range;

[0024] Generate a grayscale voltage pulse corresponding to each color level, wherein the voltage of the grayscale voltage pulse is the corresponding equivalent voltage, and the total duration of the grayscale voltage pulse is equal to the inter-frame interval duration.

[0025] According to the color depth extension method for a display device provided in this application, the step of displaying the image based on the grayscale voltage pulse and the color scale set includes:

[0026] Get the screen to be displayed;

[0027] Determine the equivalent grayscale value of each color channel for each pixel in the image to be displayed;

[0028] Based on the equivalent grayscale values ​​corresponding to all pixels, the color level set, and the grayscale voltage pulse, the driving voltage signal of each pixel driving circuit in the display device is determined.

[0029] The corresponding driving voltage signal is provided to the pixel driving circuit to display the image to be displayed.

[0030] According to the color depth extension method for a display device provided in this application, determining the driving voltage signal of each pixel driving circuit in the display device based on the equivalent grayscale value corresponding to all pixels, the color scale set, and the grayscale voltage pulse includes:

[0031] The color level corresponding to each equivalent gray level value is determined from the color level set, and used as the target color level of the corresponding color channel of the corresponding pixel;

[0032] The grayscale voltage pulse corresponding to the target color level is used as the driving voltage signal for the corresponding pixel driving circuit in the display device.

[0033] According to the color depth extension method for display devices provided in this application, before obtaining the target color depth value, the method further includes:

[0034] Obtain a color depth extension instruction, wherein the color depth extension instruction carries the target display mode;

[0035] Obtain the preset color depth value corresponding to the target display mode, and use it as the target color depth value.

[0036] Secondly, this application provides a color depth extension device for a display device, comprising:

[0037] The acquisition module is used to acquire the target color depth value, as well as the maximum data voltage, minimum data voltage, and inter-frame interval of the display device, wherein the target color depth value is greater than the actual color depth value of the display device;

[0038] The first determining module is used to determine the color level set for each color channel corresponding to the target color depth value, wherein the color level set includes multiple color levels;

[0039] The second determining module is used to determine the grayscale voltage pulse corresponding to each color level based on the total number of color levels in the color level set, the inter-frame interval duration, the maximum data voltage, and the minimum data voltage, wherein the total duration of each grayscale voltage pulse is equal to the inter-frame interval duration.

[0040] The control module is used to control the display device to display an image based on the grayscale voltage pulse and the color scale set, so that the color depth of the display device is expanded from the actual color depth value to the target color depth value.

[0041] According to the color depth extension device of the display device of this application, the second determining module is specifically used for:

[0042] The inter-frame interval duration is divided into multiple sub-interval durations, and the number of the multiple sub-interval durations is equal to the total number.

[0043] Based on the sub-interval duration, the maximum data voltage, and the minimum data voltage, a grayscale voltage pulse corresponding to each color level is generated;

[0044] The grayscale voltage pulse includes multiple consecutive sub-pulses, the number of which is equal to the number of sub-interval durations, the duration of each sub-pulse is equal to the duration of the sub-interval, and the voltage of each sub-pulse is either the maximum data voltage or the minimum data voltage.

[0045] According to the color depth extension device of the display device of this application, the second determining module is specifically used for:

[0046] Determine the first occurrence count of the maximum data voltage and the second occurrence count of the minimum data voltage for each color level in the color level set, and the sum of the first occurrence count and the second occurrence count for each color level is equal to the total number;

[0047] Based on the maximum data voltage, the minimum data voltage, the sub-interval duration, the first occurrence count, and the second occurrence count, a grayscale voltage pulse corresponding to each color level is determined. The number of sub-pulses in the grayscale voltage pulse with a voltage equal to the maximum data voltage is equal to the corresponding first occurrence count, and the number of sub-pulses in the grayscale voltage pulse with a voltage equal to the minimum data voltage is equal to the corresponding second occurrence count.

[0048] According to the color depth extension device of the display device of this application, the second determining module is specifically used for:

[0049] The first occurrence count of the maximum data voltage corresponding to each color level in the color level set is determined by an incremental method, and the first occurrence count of the color level with the largest value in the color level set is equal to the total number.

[0050] The second occurrence count of the minimum data voltage corresponding to each color level in the color level set is determined by a decreasing method, and the second occurrence count of the color level with the smallest value in the color level set is equal to the total number.

[0051] According to the color depth extension device of the display device of this application, the second determining module is specifically used for:

[0052] Determine the voltage ranges corresponding to the maximum data voltage and the minimum data voltage;

[0053] Using a preset voltage calculation formula, the equivalent voltage corresponding to each color level in the color level set is determined from the voltage range;

[0054] Generate a grayscale voltage pulse corresponding to each color level, wherein the voltage of the grayscale voltage pulse is the corresponding equivalent voltage, and the total duration of the grayscale voltage pulse is equal to the inter-frame interval duration.

[0055] According to the color depth extension device of the display device of this application, the control module is specifically used for:

[0056] Get the screen to be displayed;

[0057] Determine the equivalent grayscale value of each color channel for each pixel in the image to be displayed;

[0058] Based on the equivalent grayscale values ​​corresponding to all pixels, the color level set, and the grayscale voltage pulse, the driving voltage signal of each pixel driving circuit in the display device is determined.

[0059] The corresponding driving voltage signal is provided to the pixel driving circuit to display the image to be displayed.

[0060] According to the color depth extension device of the display device of this application, the control module is specifically used for:

[0061] The color level corresponding to each equivalent gray level value is determined from the color level set, and used as the target color level of the corresponding color channel of the corresponding pixel;

[0062] The grayscale voltage pulse corresponding to the target color level is used as the driving voltage signal for the corresponding pixel driving circuit in the display device.

[0063] According to the color depth extension device of the display device of this application, the control module is specifically used for:

[0064] Obtain a color depth extension instruction, wherein the color depth extension instruction carries the target display mode;

[0065] Obtain the preset color depth value corresponding to the target display mode, and use it as the target color depth value.

[0066] Thirdly, this application provides a non-transitory computer-readable storage medium storing a computer program thereon, characterized in that the computer program, when executed by a processor, implements the color depth extension method of the display device described in any of the above claims.

[0067] Fourthly, this application provides a display device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the program to implement the color depth expansion method of the display device described in any of the above claims. Attached Figure Description

[0068] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0069] Figure 1 This is a flowchart illustrating the color depth extension method for a display device provided in an embodiment of this application;

[0070] Figure 2 This is another schematic flowchart of the color depth expansion method for the display device provided in the embodiments of this application;

[0071] Figure 3 This is a schematic diagram illustrating multiple frames and color levels with different mixing methods when the target color depth value is n, as provided in the embodiments of this application.

[0072] Figure 4 This is another schematic flowchart of the color depth expansion method for the display device provided in the embodiments of this application;

[0073] Figure 5 This is a schematic diagram of the color depth extension device of the display device provided in the embodiments of this application;

[0074] Figure 6 This is a schematic diagram of the structure of the display device provided in the embodiments of this application;

[0075] Figure 7 This is a schematic diagram of the hardware structure of the display device provided in the embodiments of this application. Detailed Implementation

[0076] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0077] The light-emitting device used in the embodiments of this application can be a current-driven light-emitting device, such as an OLED (Organic Light-Emitting Diode). The transistor used in the embodiments of this application can be a thin-film transistor, a field-effect transistor, or other devices with the same characteristics. Since the source and drain of the transistor are symmetrical, there is no distinction between them. In the embodiments of this application, to distinguish the source and drain of the transistor, one of the terminals is called the first terminal, the other is called the second terminal, and the gate is called the control terminal. Furthermore, according to the characteristics of the transistor, transistors can be divided into N-type and P-type. The following embodiments are described using N-type transistors. When using an N-type transistor, the first terminal is the source of the N-type transistor, the second terminal is the drain of the N-type transistor, and when the gate input is high, the source and drain are conducting. The opposite is true for P-type transistors. It is conceivable that using a P-type transistor is something that those skilled in the art can easily conceive of without creative effort, and therefore it is also within the protection scope of the embodiments of this application.

[0078] This application provides a method, apparatus, storage medium, and display device for extending the color depth of a display device.

[0079] Please see Figure 1 , Figure 1 This is a flowchart illustrating a color depth extension method for a display device provided in an embodiment of this application. The color depth extension method for the display device includes the following steps 101-104, wherein:

[0080] The color depth expansion method of the display device in the embodiments of this application will be described in detail below.

[0081] 101. Obtain the target color depth value, as well as the maximum data voltage, minimum data voltage, and inter-frame interval of the display device. The target color depth value is greater than the actual color depth value of the display device.

[0082] The display device includes a driver circuit board (driver chip) and a display panel. The display panel includes a pixel driver circuit array and light-emitting devices connected to each pixel driver circuit in the array. Each pixel driver circuit is connected to one light-emitting device. The driver circuit board primarily provides various driving signals to the pixel driver circuits in the display panel, such as data voltage signals (i.e., grayscale voltage), scan signals, and timing control signals, to drive the corresponding light-emitting devices to emit light. The light-emitting devices are used to display any one of the three primary colors: red, green, and blue (R / G / B). Each pixel in the image displayed on the display panel can correspond to three pixel driver circuits and three light-emitting devices.

[0083] The inter-frame interval, also known as the time interval between frames, is calculated as 1 / the frame rate of the display device. For example, with a frame rate of 30 frames per second (fps), the inter-frame interval is 1 / 30. The frame rate is the frequency (rate) at which bitmap images, measured in frames, appear continuously on the display; it can be expressed as frames per second. The frame rate typically represents the number of image frames a display device can update per second. A higher frame rate results in smoother, more realistic animation.

[0084] Color depth is a unit used to represent the number of colors in a digital image, measured in bits. It refers to the number of bits used to represent the color of a single pixel in a bitmap or video frame buffer, or the number of bits used for each color component of a single pixel. A color depth of 1 bit means that each color channel can only display 2^1 = 2 color levels. That is, any of the three primary colors (red, green, blue) can only be divided into two equal parts. Each color level indicates a grayscale value. Taking red as an example, one part is the darkest black, and the other is the brightest red. Both of these color levels are represented by a binary number 0 or 1, where 0 represents a grayscale value of 0 and 1 represents a grayscale value of 255. Therefore, the entire display can only show black and white. A color depth of 2 bits means that each color channel can display 2^2 = 4 color levels. That is, a single primary color can be divided into 4 equal parts. Taking red as an example, in addition to the darkest black and the brightest red, it can also include two transitional colors in between. These four color levels can be represented by two binary numbers, such as 00, 01, 10, and 11. Different color levels represent different degrees of brightness (i.e., grayscale values) of the corresponding color channels.

[0085] The actual color depth value depends on the hardware attributes of the display device itself, primarily on the design of the driver circuit board. It is entirely based on the design of the driver circuit board. The actual color depth value can be equal to 1 bit, meaning the driver circuit board's driving capability only supports native 1-bit panel data. The maximum data voltage is the grayscale voltage provided by the source driver circuit in the driver circuit board when the brightness of the color displayed by the light-emitting device is at its maximum (bright). The minimum data voltage is the grayscale voltage provided by the source driver circuit when the brightness of the color displayed by the light-emitting device is at its minimum (dark). Different display brightnesses of the light-emitting device correspond to different grayscale voltages.

[0086] It should be noted that the maximum data voltage, minimum data voltage, frame rate, and actual color depth value depend on the hardware attributes of the display device, mainly the hardware attributes of the driver circuit board. Once the various hardware components of the display device are designed, the maximum data voltage, minimum data voltage, frame rate, and actual color depth value are determined.

[0087] The target color depth value can be manually set, such as by the user during use or before the device leaves the factory. The user can directly input the target color depth value through the user interface, or the target color depth value can be set indirectly by the user. For example, before the step "obtaining the target color depth value" mentioned above, the color depth extension method for this display device may also include:

[0088] Obtain the color depth extension instruction, which carries the target display mode;

[0089] Obtain the preset color depth value corresponding to the target display mode, and use it as the target color depth value.

[0090] The color depth extension instruction can be generated automatically by the system or manually by the user. The target display mode can be selected from multiple display mode options, including high-quality, medium-quality, and low-quality display modes. Different display modes correspond to different operating states of the display device. Specifically, the low-quality display mode can be related to the display device's power consumption; for example, when the display device is in a low-power state, the low-quality display mode can be used as the target display mode to generate the color depth extension instruction. The high-quality display mode can be related to the display device's network environment; for example, when the display device has a good network connection, the high-quality display mode can be used as the target display mode to generate the color depth extension instruction.

[0091] Different display modes correspond to different preset color depth values. For example, in high-quality display mode, the preset color depth value can be 10 bits, while in low-quality display mode, the preset color depth value can be 2 bits. The display mode and preset color depth value can be associated and stored in advance, and the preset color depth value corresponding to the target display mode can be determined directly by matching according to the association.

[0092] It should be noted that by associating the color depth of the display device with its operating status, the color depth can be intelligently adjusted based on the device's operating state, thus improving the display device's intelligence. The preset and target color depth values ​​are flexible and variable; they can be considered the final color depth displayed by the display device. Typically, both the display device's hardware attributes and software programming can affect the final display effect. These preset and target color depth values ​​differ from the actual color depth values ​​mentioned above, and their values ​​are usually greater than the actual color depth values.

[0093] 102. Determine the set of color levels for each color channel corresponding to the target color depth value. This set of color levels includes multiple color levels.

[0094] The RGB value of a pixel includes components from three color channels: red (R), green (G), and blue (B). Each color channel can display an equal number of color levels, the number of which depends on the color depth value. In other words, each color channel corresponds to the same set of color levels, and the total number of colors displayed by the display device is equal to the number of color levels. ^3 When the color depth is n, the number of color levels is usually equal to 2. n That is, the color of each color channel can be divided into 2 equal parts. n The total number of colors displayed by the display device is (2). n ) ^3 For example, if the target color depth is 2 bits, then each color channel can display 2 color levels. 2 (That is, 4). If the target color depth is 8 bits, then each color channel can display 2 color levels. 8 (i.e. 256).

[0095] 103. Based on the total number of color levels in the color level set, the inter-frame interval duration, the maximum data voltage, and the minimum data voltage, determine the gray level voltage pulse corresponding to each color level, and the total duration of each gray level voltage pulse is equal to the inter-frame interval duration.

[0096] Among them, the grayscale voltage pulse is a square wave pulse, which can include one voltage value or multiple voltage values.

[0097] For example, in some embodiments, when the grayscale voltage pulse includes multiple voltage values, please refer to [reference needed]. Figure 2 , Figure 2 This is another flowchart illustrating the color depth extension method for a display device provided in this application embodiment. Step 103 may specifically include:

[0098] 1031A. Divide the inter-frame interval into multiple sub-interval durations, the number of which is equal to the total number;

[0099] 1032A. Generate grayscale voltage pulses corresponding to each color level based on the sub-interval duration, the maximum data voltage, and the minimum data voltage.

[0100] The grayscale voltage pulse includes multiple consecutive sub-pulses, the number of which is equal to the number of sub-intervals, the duration of each sub-pulse is equal to the duration of the sub-interval, and the voltage of each sub-pulse is either the maximum data voltage or the minimum data voltage.

[0101] This method allows the display device to expand its color depth from 1 bit to n bits without changing the original output voltage of the driver circuit board, based on Frame Rate Control (FRC). FRC uses time-based mixing to change the chroma. If the time taken to create an image is divided into frames, pixels can switch between darker and brighter color levels during frame transitions, thus producing intermediate color levels.

[0102] Specifically, the time interval T between frames (i.e., the inter-frame interval) is first divided into 2^n intervals, that is, divided into 2^n intervals. n The duration of each sub-interval is t = T / 2 n Then, using the sub-interval duration as the duration of the sub-pulse, the number of sub-interval durations as the number of sub-pulses, and the maximum or minimum data voltage as the voltage of the sub-pulse, grayscale voltage pulses are generated. Different color levels correspond to different grayscale voltage pulses. In different grayscale voltage pulses, the application duration of the maximum data voltage and the minimum data voltage are different. For example, the application duration of the maximum data voltage can be equal to the inter-frame interval duration T at most, and can be equal to 0 at least.

[0103] Furthermore, step 1032A specifically includes:

[0104] Determine the first occurrence count of the maximum data voltage and the second occurrence count of the minimum data voltage for each color level in the color level set. The sum of the first occurrence count and the second occurrence count for each color level is equal to the total number.

[0105] Based on the maximum data voltage, the minimum data voltage, the sub-interval duration, the first occurrence count, and the second occurrence count, the grayscale voltage pulse corresponding to each color level is determined. The number of sub-pulses with the voltage of the maximum data voltage in the grayscale voltage pulse is equal to the corresponding first occurrence count, and the number of sub-pulses with the voltage of the minimum data voltage in the grayscale voltage pulse is equal to the corresponding second occurrence count.

[0106] In this grayscale voltage pulse, the number of sub-pulses is consistent with the number of color levels in a single color channel corresponding to the target color depth value. Each sub-pulse corresponds to one frame of data voltage signal, and the grayscale voltage pulse includes 2... n The data voltage signals of each frame correspond to the brightest or darkest color in a single color channel (i.e., the color corresponding to the maximum data voltage or the color corresponding to the minimum data voltage). This embodiment displays 2 frames within the interval between individual frames using a time-mixing method. n Frames, through these 2 n The frame switching produces an intermediate color between the brightest and darkest colors, and these 2 nDifferent frame blending methods can produce different intermediate colors. The first and second occurrence counts mentioned above determine these two... n In frame blending, the sum of the first and second occurrence counts is generally equal to 2. n Different first and second occurrence counts represent these 2 n Different frame mixing methods also represent different grayscale voltage pulses.

[0107] For example, see Figure 3 , Figure 3 This is a schematic diagram illustrating multiple frames and color levels with different mixing methods when the target color depth value is n, provided in an embodiment of this application. Each row includes 2 n There are 2 small squares, each representing 1 frame, meaning one line consists of 2 squares. n In a frame, black squares represent the darkest color (corresponding to the lowest data voltage), and white squares represent the brightest color (corresponding to the highest data voltage). Since the number of black squares varies across different rows, the number of white squares also varies. Therefore, the 2x2 frames in different rows... n Frames have different blending methods and corresponding color levels. Figure 3 2 in each row n A frame corresponds to one of the aforementioned grayscale voltage pulses, the 2 n Each frame in a frame corresponds to a sub-pulse in the corresponding grayscale voltage pulse, and the voltage magnitude of the sub-pulse corresponds to the brightness of the color in the corresponding frame. For example, when the sub-pulse voltage is the maximum data voltage, it represents the brightest color in the corresponding frame; when the sub-pulse voltage is the minimum data voltage, it represents the darkest color in the corresponding frame. Figure 3 Counting from top to bottom, each row corresponds to a progressively darker color level, with a total of 2... n If it's okay, then it corresponds to 2. n Each color level is used to achieve [the desired effect].

[0108] In some embodiments, the above step of "determining the first occurrence count of the maximum data voltage corresponding to each color level in the color level set, and the second occurrence count of the minimum data voltage" specifically includes:

[0109] The first occurrence count of the maximum data voltage corresponding to each color level in the color level set is determined by incremental method, and the first occurrence count of the color level with the largest value in the color level set is equal to the total number.

[0110] The second occurrence count of the minimum data voltage corresponding to each color level in the color level set is determined by decreasing the count. The second occurrence count of the color level with the smallest value in the color level set is equal to the total count.

[0111] In this process, the frequency of the first occurrence can increase by 1 for each occurrence, following the order from the brightest to the darkest color levels. The minimum frequency of the first occurrence can be 0, and the maximum frequency can be 2. n Conversely, the corresponding second occurrence count can decrease by 1 each time, and the minimum value of the second occurrence count can be 0, and the maximum value can be 2. n For example, please continue to see Figure 3 The first row shows 2 n In the frame, all the small squares are white, and there are no black small squares. That is, in the corresponding grayscale voltage pulse, the first occurrence of the maximum data voltage is 2. n The second occurrence of the minimum data voltage is 0, as shown in the second row (2). n In the frame, the number of white squares is 2. n -1, the number of black squares is 1, which means that in the corresponding grayscale voltage pulse, the first occurrence of the maximum data voltage is 2. n -1, the second occurrence of the minimum data voltage is 1.

[0112] For example, in other embodiments, when the grayscale voltage pulse includes a voltage value, please refer to [link to relevant documentation]. Figure 4 , Figure 4 This is another flowchart illustrating the color depth extension method for a display device provided in this application embodiment. Step 103 may specifically include:

[0113] 1031B. Determine the voltage range corresponding to the maximum data voltage and the minimum data voltage;

[0114] 1032B. Using a preset voltage calculation formula, determine the equivalent voltage corresponding to each color level in the color level set from the voltage range;

[0115] 1033B. Generate a grayscale voltage pulse corresponding to each color level. The voltage of the grayscale voltage pulse is the corresponding equivalent voltage, and the total duration of the grayscale voltage pulse is equal to the inter-frame interval duration.

[0116] The preset voltage calculation formula can be stored in the driver circuit board (T-CON), allowing users to pre-set and store different voltage calculation formulas for different color depth values. Specifically, through the voltage calculation formula, the voltage range supported by the display panel hardware can be directly determined. n Each equivalent voltage corresponds to a color level, and a grayscale voltage pulse with the equivalent voltage as the voltage and the inter-frame interval duration as the total duration is generated. Subsequently, the grayscale voltage pulse can be output to the corresponding pixel driving circuit through the source driving circuit, thereby achieving an n-bit color depth display effect.

[0117] 104. Based on the grayscale voltage pulse and the color scale set, control the display device to display an image so that the color depth of the display device is expanded from the actual color depth value to the target color depth value.

[0118] In some implementations, step 104 specifically includes:

[0119] Get the screen to be displayed;

[0120] Determine the equivalent grayscale value of each color channel for each pixel in the image to be displayed;

[0121] Based on the equivalent grayscale values ​​corresponding to all pixels, as well as the set of color levels and the grayscale voltage pulse, the driving voltage signal of each pixel driving circuit in the display device is determined.

[0122] The corresponding driving voltage signal is provided to the pixel driving circuit to display the image to be displayed.

[0123] The image to be displayed is provided to the display device by other devices. Usually, the number of color levels of the image to be displayed may not be equal to the number of color levels of the display device. As a result, the same color level may correspond to different grayscale values ​​in the image to be displayed and the display device. In this case, a display lookup table (LUT) is needed to convert the grayscale value of the image to be displayed to obtain the corresponding equivalent grayscale value in the display device. This LUT is usually stored in advance in the driver circuit board.

[0124] In some embodiments, the above step of "determining the driving voltage signal of each pixel driving circuit in the display device based on the equivalent grayscale values ​​corresponding to all pixels, the color level set, and the grayscale voltage pulse" specifically includes:

[0125] Determine the color level corresponding to each equivalent gray level value from the color level set, and use it as the target color level of the corresponding color channel of the corresponding pixel;

[0126] The grayscale voltage pulse corresponding to the target color level is used as the driving voltage signal for the corresponding pixel driving circuit in the display device.

[0127] Once the equivalent grayscale value of each color channel of each pixel in the image to be displayed is determined, since each grayscale value represents a color level, the color level corresponding to the equivalent grayscale value can be directly found from the grayscale voltage pulse, and the grayscale voltage pulse corresponding to the color level is used as the driving voltage signal of the corresponding pixel driving circuit for display, thereby expanding the color depth of the display device from the original 1 bit to n bits.

[0128] As described above, the color depth extension method for display devices provided in this application obtains a target color depth value, as well as the maximum data voltage, minimum data voltage, and inter-frame interval duration of the display device. The target color depth value is greater than the actual color depth value of the display device. The method then determines a set of color levels for each color channel corresponding to the target color depth value, where the set includes multiple color levels. Based on the total number of color levels in the set, the inter-frame interval duration, the maximum data voltage, and the minimum data voltage, a grayscale voltage pulse corresponding to each color level is determined, where the total duration of each grayscale voltage pulse is equal to the inter-frame interval duration. Based on the grayscale voltage pulses and the color level set, the method controls the display device to display an image, thereby extending the color depth of the display device from the actual color depth value to the target color depth value. This allows for the use of a low color depth driving circuit board to achieve a high color depth display effect without increasing the design complexity of the driving circuit board, which helps reduce the hardware design difficulty and cost of the display device.

[0129] Based on the method described in the above embodiments, this application also provides a color depth extension device for a display device. Please refer to... Figure 5 , Figure 5 This is a schematic diagram of the structure of a color depth extension device 200 for a display device provided in an embodiment of this application. The color depth extension device 200 includes an acquisition module 201, a first determination module 202, a second determination module 203, and a control module 204, wherein:

[0130] The acquisition module 201 is used to acquire the target color depth value, as well as the maximum data voltage, minimum data voltage and inter-frame interval of the display device, wherein the target color depth value is greater than the actual color depth value of the display device.

[0131] The first determining module 202 is used to determine the color level set of each color channel corresponding to the target color depth value, and the color level set includes multiple color levels;

[0132] The second determining module 203 is used to determine the grayscale voltage pulse corresponding to each color level based on the total number of color levels in the color level set, the inter-frame interval duration, the maximum data voltage, and the minimum data voltage, wherein the total duration of each grayscale voltage pulse is equal to the inter-frame interval duration.

[0133] The control module 204 is used to control the display device to display an image based on the grayscale voltage pulse and the color scale set, so that the color depth of the display device is expanded from the actual color depth value to the target color depth value.

[0134] In some implementations, the second determining module 203 is specifically used for:

[0135] The inter-frame interval is divided into multiple sub-interval durations, and the number of these multiple sub-interval durations is equal to the total number.

[0136] Based on the sub-interval duration, the maximum data voltage, and the minimum data voltage, generate grayscale voltage pulses corresponding to each color level;

[0137] The grayscale voltage pulse includes multiple consecutive sub-pulses, the number of which is equal to the number of sub-intervals, the duration of each sub-pulse is equal to the duration of the sub-interval, and the voltage of each sub-pulse is either the maximum data voltage or the minimum data voltage.

[0138] In some implementations, the second determining module 203 is specifically used for:

[0139] Determine the first occurrence count of the maximum data voltage and the second occurrence count of the minimum data voltage for each color level in the color level set. The sum of the first occurrence count and the second occurrence count for each color level is equal to the total number.

[0140] Based on the maximum data voltage, the minimum data voltage, the sub-interval duration, the first occurrence count, and the second occurrence count, the grayscale voltage pulse corresponding to each color level is determined. The number of sub-pulses with the voltage of the maximum data voltage in the grayscale voltage pulse is equal to the corresponding first occurrence count, and the number of sub-pulses with the voltage of the minimum data voltage in the grayscale voltage pulse is equal to the corresponding second occurrence count.

[0141] In some implementations, the second determining module 203 is specifically used for:

[0142] The first occurrence count of the maximum data voltage corresponding to each color level in the color level set is determined by incremental method, and the first occurrence count of the color level with the largest value in the color level set is equal to the total number.

[0143] The second occurrence count of the minimum data voltage corresponding to each color level in the color level set is determined by decreasing the count. The second occurrence count of the color level with the smallest value in the color level set is equal to the total count.

[0144] In some implementations, the second determining module 203 is specifically used for:

[0145] Determine the voltage range corresponding to the maximum and minimum data voltages;

[0146] Using a preset voltage calculation formula, the equivalent voltage corresponding to each color level in the color level set is determined from the voltage range;

[0147] Generate a grayscale voltage pulse corresponding to each color level. The voltage of the grayscale voltage pulse is the corresponding equivalent voltage, and the total duration of the grayscale voltage pulse is equal to the inter-frame interval duration.

[0148] In some implementations, the control module 204 is specifically used for:

[0149] Get the screen to be displayed;

[0150] Determine the equivalent grayscale value of each color channel for each pixel in the image to be displayed;

[0151] Based on the equivalent grayscale values ​​corresponding to all pixels, as well as the set of color levels and the grayscale voltage pulse, the driving voltage signal of each pixel driving circuit in the display device is determined.

[0152] The corresponding driving voltage signal is provided to the pixel driving circuit to display the image to be displayed.

[0153] In some implementations, the control module 204 is specifically used for:

[0154] Determine the color level corresponding to each equivalent gray level value from the color level set, and use it as the target color level of the corresponding color channel of the corresponding pixel;

[0155] The grayscale voltage pulse corresponding to the target color level is used as the driving voltage signal for the corresponding pixel driving circuit in the display device.

[0156] In some implementations, the acquisition module 201 is further configured to:

[0157] Obtain the color depth extension instruction, which carries the target display mode;

[0158] Obtain the preset color depth value corresponding to the target display mode, and use it as the target color depth value.

[0159] It should be noted that the specific details of each module unit in the color depth extension device 200 of the above-mentioned display device have been described in detail in the corresponding color depth extension method of the above-mentioned display device, and will not be repeated here.

[0160] This application also provides a display device; please refer to [link to relevant documentation]. Figure 6 , Figure 6 This is a schematic diagram of the structure of the display device 300 provided in the embodiments of this application. The display device 300 includes a processor 301, a memory 302, and a computer program 303 stored in the memory 302 and executable on the processor 301. The processor 301 executes the computer program 303 to implement the various processes of the color depth expansion method embodiments of the above-described display device, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0161] It should be noted that the display device in the embodiments of this application includes the aforementioned mobile display device and non-mobile display device.

[0162] Figure 7 A schematic diagram of the hardware structure of a display device to implement an embodiment of this application.

[0163] The display device 400 includes, but is not limited to, components such as: radio frequency unit 401, network module 402, audio output unit 403, input unit 404, sensor 405, display unit 406, user input unit 407, interface unit 408, memory 409, and processor 410.

[0164] Those skilled in the art will understand that the display device 400 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 410 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 7 The display device structure shown in the figure does not constitute a limitation on the display device. The display device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0165] It should be understood that, in this embodiment, the input unit 404 may include a graphics processing unit (GPU) 4041 and a microphone 4042. The GPU 4041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 406 may include a display panel 4061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 407 includes at least one of a touch panel 4071 and other input devices 4072. The touch panel 4071 is also called a touch screen. The touch panel 4071 may include a touch detection device and a touch controller. Other input devices 4072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0166] The memory 409 can be used to store software programs and various data. The memory 409 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 409 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 409 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0167] Processor 410 may include one or more processing units; processor 410 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 410.

[0168] This application also provides a non-transitory computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the various processes of the above-described color depth extension method embodiment for the display device and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0169] The processor is the processor in the display device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0170] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the color depth extension method of the display device described above.

[0171] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0172] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0173] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0174] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0175] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0176] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for color depth expansion in a display device, characterized in that, include: The target color depth value, as well as the maximum data voltage, minimum data voltage, and inter-frame interval of the display device are obtained, wherein the target color depth value is greater than the actual color depth value of the display device; Determine the color level set for each color channel corresponding to the target color depth value, wherein the color level set includes multiple color levels; Based on the total number of color levels in the color level set, the inter-frame interval duration, the maximum data voltage, and the minimum data voltage, a grayscale voltage pulse corresponding to each color level is determined, and the total duration of each grayscale voltage pulse is equal to the inter-frame interval duration. The inter-frame interval duration is divided into multiple sub-interval durations, the number of which is equal to the total number. Based on the sub-interval durations, the maximum data voltage, and the minimum data voltage, a grayscale voltage pulse corresponding to each color level is generated. Each grayscale voltage pulse includes multiple consecutive sub-pulses, the number of which is equal to the number of sub-interval durations, the duration of each sub-pulse is equal to the sub-interval duration, and the voltage of each sub-pulse is equal to the maximum data voltage. The voltage or the minimum data voltage; wherein, the first occurrence count of the maximum data voltage and the second occurrence count of the minimum data voltage corresponding to each color level in the color level set are determined, and the sum of the first occurrence count and the second occurrence count for each color level is equal to the total number; based on the maximum data voltage, the minimum data voltage, the sub-interval duration, the first occurrence count, and the second occurrence count, the grayscale voltage pulse corresponding to each color level is determined, and the number of sub-pulses in the grayscale voltage pulse with a voltage of the maximum data voltage is equal to the corresponding first occurrence count, and the number of sub-pulses in the grayscale voltage pulse with a voltage of the minimum data voltage is equal to the corresponding second occurrence count; Based on the grayscale voltage pulse and the color scale set, the display device is controlled to display an image so that the color depth of the display device is expanded from the actual color depth value to the target color depth value.

2. The color depth expansion method according to claim 1, characterized in that, Determining the first occurrence count of the maximum data voltage and the second occurrence count of the minimum data voltage corresponding to each color level in the color level set includes: The first occurrence count of the maximum data voltage corresponding to each color level in the color level set is determined by an incremental method, and the first occurrence count of the color level with the largest value in the color level set is equal to the total number. The second occurrence count of the minimum data voltage corresponding to each color level in the color level set is determined by a decreasing method, and the second occurrence count of the color level with the smallest value in the color level set is equal to the total number.

3. The color depth expansion method according to claim 1, characterized in that, The step of determining the grayscale voltage pulse corresponding to each color level based on the total number of color levels in the color level set, the inter-frame interval duration, the maximum data voltage, and the minimum data voltage includes: Determine the voltage ranges corresponding to the maximum data voltage and the minimum data voltage; Using a preset voltage calculation formula, the equivalent voltage corresponding to each color level in the color level set is determined from the voltage range; Generate a grayscale voltage pulse corresponding to each color level, wherein the voltage of the grayscale voltage pulse is the corresponding equivalent voltage, and the total duration of the grayscale voltage pulse is equal to the inter-frame interval duration.

4. The color depth extension method according to any one of claims 1-3, characterized in that, The step of displaying the image based on the grayscale voltage pulse and the color scale set includes: Get the screen to be displayed; Determine the equivalent grayscale value of each color channel for each pixel in the image to be displayed; Based on the equivalent grayscale values ​​corresponding to all pixels, the color level set, and the grayscale voltage pulse, the driving voltage signal of each pixel driving circuit in the display device is determined. The corresponding driving voltage signal is provided to the pixel driving circuit to display the image to be displayed.

5. The color depth expansion method according to claim 4, characterized in that, The step of determining the driving voltage signal of each pixel driving circuit in the display device based on the equivalent grayscale value corresponding to all pixels, the color level set, and the grayscale voltage pulse includes: The color level corresponding to each equivalent gray level value is determined from the color level set, and used as the target color level of the corresponding color channel of the corresponding pixel; The grayscale voltage pulse corresponding to the target color level is used as the driving voltage signal for the corresponding pixel driving circuit in the display device.

6. The color depth expansion method according to any one of claims 1-3, characterized in that, Before obtaining the target color depth value, the following steps are also included: Obtain a color depth extension instruction, wherein the color depth extension instruction carries the target display mode; Obtain the preset color depth value corresponding to the target display mode, and use it as the target color depth value.

7. A color depth extension device for a display device, characterized in that, include: The acquisition module is used to acquire the target color depth value, as well as the maximum data voltage, minimum data voltage, and inter-frame interval of the display device, wherein the target color depth value is greater than the actual color depth value of the display device; The first determining module is used to determine the color level set for each color channel corresponding to the target color depth value, wherein the color level set includes multiple color levels; The second determining module is used to determine the grayscale voltage pulse corresponding to each color level based on the total number of color levels in the color level set, the inter-frame interval duration, the maximum data voltage, and the minimum data voltage, wherein the total duration of each grayscale voltage pulse is equal to the inter-frame interval duration. The control module is used to control the display device to display an image based on the grayscale voltage pulse and the color scale set, so that the color depth of the display device is expanded from the actual color depth value to the target color depth value; The second determining module is specifically used for: The inter-frame interval duration is divided into multiple sub-interval durations, and the number of the multiple sub-interval durations is equal to the total number. Based on the sub-interval duration, the maximum data voltage, and the minimum data voltage, a grayscale voltage pulse corresponding to each color level is generated; The grayscale voltage pulse includes multiple consecutive sub-pulses, the number of sub-pulses is equal to the number of sub-interval durations, the duration of each sub-pulse is equal to the sub-interval duration, and the voltage of each sub-pulse is the maximum data voltage or the minimum data voltage. The second determining module is specifically used for: Determine the first occurrence count of the maximum data voltage and the second occurrence count of the minimum data voltage for each color level in the color level set, and the sum of the first occurrence count and the second occurrence count for each color level is equal to the total number; Based on the maximum data voltage, the minimum data voltage, the sub-interval duration, the first occurrence count, and the second occurrence count, a grayscale voltage pulse corresponding to each color level is determined. The number of sub-pulses in the grayscale voltage pulse with a voltage equal to the maximum data voltage is equal to the corresponding first occurrence count, and the number of sub-pulses in the grayscale voltage pulse with a voltage equal to the minimum data voltage is equal to the corresponding second occurrence count.

8. The color depth extension device for a display device according to claim 7, characterized in that, The second determining module is specifically used for: The first occurrence count of the maximum data voltage corresponding to each color level in the color level set is determined by an incremental method, and the first occurrence count of the color level with the largest value in the color level set is equal to the total number. The second occurrence count of the minimum data voltage corresponding to each color level in the color level set is determined by a decreasing method, and the second occurrence count of the color level with the smallest value in the color level set is equal to the total number.

9. The color depth extension device for a display device according to claim 7, characterized in that, The second determining module is specifically used for: Determine the voltage ranges corresponding to the maximum data voltage and the minimum data voltage; Using a preset voltage calculation formula, the equivalent voltage corresponding to each color level in the color level set is determined from the voltage range; Generate a grayscale voltage pulse corresponding to each color level, wherein the voltage of the grayscale voltage pulse is the corresponding equivalent voltage, and the total duration of the grayscale voltage pulse is equal to the inter-frame interval duration.

10. The color depth extension device for a display device according to any one of claims 7-9, characterized in that, The control module is specifically used for: Get the screen to be displayed; Determine the equivalent grayscale value of each color channel for each pixel in the image to be displayed; Based on the equivalent grayscale values ​​corresponding to all pixels, the color level set, and the grayscale voltage pulse, the driving voltage signal of each pixel driving circuit in the display device is determined. The corresponding driving voltage signal is provided to the pixel driving circuit to display the image to be displayed.

11. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the color depth expansion method of the display device as described in any one of claims 1-6.

12. A display device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the color depth expansion method of the display device as described in any one of claims 1-6.

Images