CN111696447A - Dot matrix LED display screen, method and system for displaying image and storage medium - Google Patents

Abstract

The invention discloses a dot matrix LED display screen, an image display method, a system and a storage medium. Wherein, each pixel of the dot matrix LED display screen is formed based on n primary colors, where n is an integer greater than 3, and the color gamut formed by the n primary colors is larger than the color gamut formed by red, green, and blue. The invention solves the technical problem of how to display more color information on the LED display screen.

Description

Dot matrix LED display screen, method, system and storage medium for displaying images

technical field

The present invention relates to the field of display, in particular, to a dot matrix LED display screen, a method, system and storage medium for displaying images.

Background technique

An image display system based on a dot-matrix light-emitting diode display (Dot-Matrix Light Emitting Diode (LED) Display) mainly includes: a dot-matrix LED display screen part composed of dot-matrix LEDs and a drive control circuit part. The dot matrix LED display has the characteristics of high saturation, wide dynamic range and high brightness. Compared with other types of displays, the dot matrix LED display is more suitable as a carrier for large-screen display; it can display images and videos, and has important application value in advertising media, commodity display, traffic control, stadiums and other occasions.

In the related art of the dot matrix LED display screen, the display screen part of most of the dot matrix LED display screens is composed of dot matrix pixels of three primary colors of red, green and blue (RGB). According to the principle of chromaticity, the color gamut (Gamut) of the display system composed of red, green, and blue three primary colors covers a triangular area on the chromaticity diagram, and there is a considerable part of the color area that cannot be truly displayed. come out. Therefore, how to display more color information on the LED display is an urgent problem to be solved.

For the above problems, no effective solution has been proposed yet.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a dot matrix LED display screen, a method, system and storage medium for displaying images, so as to at least solve the technical problem of how to display more color information on the LED display screen.

According to an aspect of the embodiments of the present invention, a dot matrix LED display screen is provided, each pixel of the dot matrix LED display screen is formed based on n primary colors, wherein n is an integer greater than 3, and n primary colors are formed by The color gamut is larger than that of red, green, and blue.

Optionally, the value of n is 6.

Optionally, the arrangement structure of the sub-pixels corresponding to the 6 primary colors includes one of the following: a hexagonal lattice arrangement structure, a 1×6 lattice arrangement structure, a 6×1 lattice arrangement structure, and a 2×3 rectangular lattice arrangement structure. , 3 × 2 rectangular lattice structure, double-character rectangular lattice structure.

Optionally, the main wavelength ranges corresponding to the six primary colors are: 440nm-460nm, 470nm-480nm, 490nm-510nm, 520nm-540nm, 560nm-600nm, and 620nm-660nm.

Optionally, the dominant wavelengths corresponding to the six primary colors are: 450 nm, 478 nm, 495 nm, 530 nm, 582 nm, and 642 nm.

According to another aspect of the embodiments of the present invention, there is also provided a method for displaying an image based on any one of the above-mentioned dot matrix LED display screens, comprising: acquiring an image of n-primary colors; determining that the n-primary colors can correctly display the The channel excitation value of the white point of the dot matrix LED display screen, and the determined channel excitation value is regarded as the primary color unit of the dot matrix LED display screen; In a manner of outputting the gray value of the n-channel as the excitation value of the n-channel, the n-primary color image is displayed on the dot-matrix LED display screen.

Optionally, the n-primary color image is acquired in at least one of the following manners: acquiring an m-primary color image, and obtaining the n-primary color image through a color gamut mapping algorithm, wherein the color gamut mapping algorithm is used to convert the m-primary color image. The image is mapped to the n-primary color image, where m is an integer greater than 1; the n-primary color image is acquired by shooting with a multispectral camera.

Optionally, the method further includes: acquiring an image of n-k primary colors, where k is an integer greater than 1 and less than n; and displaying the n-k primary colors on the dot-matrix LED display by closing k channels in the n channels image.

According to yet another aspect of the embodiments of the present invention, a system for displaying images is provided, including: a power supply, a driving control circuit, and the dot matrix LED display screen according to any one of the above, wherein the power supply is used for Power supply for the drive control circuit and the dot matrix LED display screen; the drive control circuit is used to drive and control the LED display chips in the dot matrix LED display screen; the dot matrix LED display screen is used for Image display is performed based on the driving of the driving control circuit.

According to yet another aspect of the embodiments of the present invention, there is further provided a storage medium, the storage medium includes a stored program, wherein when the program runs, a device where the storage medium is located is controlled to execute any one of the above method.

In the embodiment of the present invention, each pixel of the dot matrix LED display screen is formed based on n primary colors, where n is an integer greater than 3, and the color gamut formed by n primary colors is larger than the color gamut formed by red, green, and blue. The color gamut composed of n primary colors is larger than the color gamut composed of red, green and blue, which achieves the purpose of improving the display color gamut of the dot matrix LED display, thus realizing the technical effect of displaying more color information on the LED display. , and then solve the technical problem of how to display more color information on the LED display.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic diagram of a dot matrix LED display screen provided according to an embodiment of the present invention;

2 is a schematic diagram of a six-primary color display screen based on a dot matrix LED provided according to an embodiment of the present invention;

3 is a schematic diagram of a compact hexagonal lattice arrangement structure of six primary color LED sub-pixels provided according to an embodiment of the present invention;

4 is a schematic diagram of a 1×6 rectangular lattice arrangement structure of six primary color LED sub-pixels provided according to an embodiment of the present invention;

5 is a schematic diagram of a 6×1 rectangular lattice arrangement structure of six primary color LED sub-pixels provided according to an embodiment of the present invention;

6 is a schematic diagram of a 2×3 rectangular lattice arrangement structure of six primary color LED sub-pixels provided according to an embodiment of the present invention;

7 is a schematic diagram of a 3×2 rectangular lattice arrangement structure of six primary color LED sub-pixels provided according to an embodiment of the present invention;

8 is a schematic diagram of a first double-pin type dot matrix arrangement structure of six primary color LED sub-pixels provided according to an embodiment of the present invention;

9 is a schematic diagram of a second two-pin type dot matrix arrangement structure of six primary color LED sub-pixels provided according to an embodiment of the present invention;

10 is a flowchart of a method for displaying an image based on a dot matrix LED display screen according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a six-primary color LED white point allocation according to an embodiment of the present invention;

12 is a schematic diagram of a system for displaying images according to an embodiment of the present invention;

13 is a comparison diagram of the color gamut and sRGB color gamut of a six-primary color LED display screen provided according to an embodiment of the present invention;

FIG. 14 is a schematic diagram of the working process of the six-primary color LED display screen provided in the preferred embodiment of the present invention.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

According to an embodiment of the present invention, a dot matrix LED display screen is provided. FIG. 1 is a schematic diagram of a dot matrix LED display screen provided according to an embodiment of the present invention. As shown in FIG. 1 , the dot matrix LED display screen is Each pixel of is formed based on n primary colors, where n is an integer greater than 3, and the color gamut composed of n primary colors is larger than the color gamut composed of red, green, and blue. Since the color gamut composed of n primary colors in the embodiment of the present invention is larger than the color gamut composed of red, green, and blue, the display color gamut of the dot-matrix LED display screen is improved, thereby realizing more display on the LED display screen. The technical effect of the color information, and then solve the technical problem of how to display more color information on the LED display.

Based on the related art, a considerable part of the color area cannot be truly displayed, resulting in the technical problem that more color information cannot be displayed on the LED display screen. In the embodiment of the present invention, taking the value of n as 6 as an example for illustration, a six-primary color display screen based on dot-matrix LED is provided. A schematic diagram of a six-primary-color display screen, as shown in FIG. 2 , a single pixel unit in the six-primary-color display screen is formed by six sub-pixels with different main wavelengths. It should be noted that, in the embodiment of the present invention, the value of n is 6 as an example for description. Since the six-primary color display screen of the dot matrix LED can more clearly and simply reflect the technical effect of the present application, the main point The six-color display of the array LED is used as an example to illustrate. For other options that increase the color gamut by increasing the number of primary colors, so that the LED display can display more color choices (for example, the five-primary color display of the dot matrix LED, the seven-primary color display of the dot-matrix LED, the eight-primary color of the dot-matrix LED display screen, etc.), which are also part of this application, and will not be listed here.

According to the minimum resolution of the human eye, LED sub-pixels of different colors should meet a compact arrangement structure. In the embodiment of the present invention, the arrangement structures of sub-pixels corresponding to 6 primary colors may be various, and the following examples are described.

For example, in the embodiment of the present invention, seven possible sub-pixel arrangement structures are proposed: compact hexagonal lattice arrangement (Fig. 3), 1×6 rectangular lattice arrangement (Fig. 4), 6×1 rectangular arrangement Lattice arrangement structure (Fig. 5), 2×3 rectangular lattice arrangement structure (Fig. 6), 3×2 rectangular lattice arrangement structure (Fig. 7), double character lattice arrangement structure (including: the first double product The word lattice arrangement structure (Fig. 8) and the second double-pin word lattice arrangement structure (Fig. 9)), so that the observer can't distinguish a single sub-pixel under the conditions as close as possible. Among them, the compact hexagonal lattice arrangement structure minimizes the distance between any two main wavelength LED sub-pixels, and the distance between all sub-pixels is the same, which can better achieve uniform light distribution; other lattice arrangements can be better Compatible with three-primary color display (that is, the six-primary color dot-matrix LED display screen provided by the embodiment of the present invention can be compatible with the existing three-primary color display by closing three of the channels).

According to the basic principles of human eye color vision uniformity and wavelength range as large as possible, for the six primary colors of the six-primary color display, the corresponding dominant wavelength ranges can be: 440nm-460nm, 470nm-480nm, 490nm-510nm, 520nm- 540nm, 560nm-600nm, 620nm-660nm. Preferably, the dominant wavelengths corresponding to the six primary colors may be: 450 nm, 478 nm, 495 nm, 530 nm, 582 nm, and 642 nm, respectively. The selected colors corresponding to the dot matrix LED sub-pixels are: red, yellow, green, cyan, cyan, blue.

According to an embodiment of the present invention, a method embodiment of a method for displaying an image on a dot matrix LED display screen based on any of the above embodiments is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings may be performed in a manner such as A set of computer-executable instructions are executed in a computer system and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that herein.

FIG. 10 is a flowchart of a method for displaying images based on a dot matrix LED display screen according to an embodiment of the present invention. As shown in FIG. 10 , the method includes the following steps:

Step S1002, acquiring an image of n primary colors;

Step S1004, determining the channel excitation value of the n primary color that can correctly display the white point of the dot matrix LED display screen, and using the determined channel excitation value as the primary color unit of the dot matrix LED display screen;

Step S1006, according to the determined primary color unit, display the n-primary color image on the dot matrix LED display screen by outputting the gray value of the n-channel corresponding to the n-primary-color image source as the excitation value of the n-channel.

Through the above steps, after determining the channel excitation value of the n-primary color that can correctly display the white point of the dot-matrix LED display screen, and taking the determined channel excitation value as the primary color unit of the dot-matrix LED display screen, the color formed by the n-primary color is determined. The gamut is larger than the color gamut composed of red, green and blue, which improves the display color gamut of the dot matrix LED display. Therefore, the n-primary color image displayed on the dot matrix LED display can display more color information, thereby solving the problem of How to show more color information on LED display technical questions.

Optionally, when acquiring the n-primary color image, multiple methods can be used. For example, the n-primary color image can be acquired by at least one of the following methods: acquiring the m-primary color image, and obtaining the n-primary color image through a color gamut mapping algorithm, wherein the color gamut The mapping algorithm is used to map the m-primary color image to the n-primary color image, where m is an integer greater than 1; the n-primary color image is obtained by shooting with a multispectral camera.

Among them, the color gamut mapping algorithm is a general term for a series of specific algorithms. The basic process is that to ensure the consistency of colors between different devices, it is necessary to adjust the colors. This adjustment process is called gamut mapping. Large gamuts are trimmed to match smaller gamuts, and small gamuts can also be stretched to get larger gamuts.

In addition, when using a multispectral camera to acquire an image of n primary colors, taking the acquisition of an image of six primary colors as an example, the main steps include: (1) using a multispectral camera to collect grayscale images of 8-10 bands of visible light of the target scene; (2) ) From the grayscale images of these bands, use the PAC algorithm, pseudo-inverse method, neural network and other methods to reconstruct the target scene; (3) According to the response characteristics of the human eye to the spectrum (visual function), cooperate with the above steps. Reconstruct the spectrum and calculate the gray value corresponding to each channel of the six-primary color image.

It should be noted that the above two ways of acquiring n-primary color images are only examples, and the others belong to the transformation or obvious changes of the above two acquisition ways, which also belong to the protection content of the present application.

In addition, before the n-primary color image is displayed, determine the channel excitation value of the n-primary color that can correctly display the white point of the dot matrix LED display screen, and take the determined channel excitation value as the primary color unit of the dot matrix LED display screen. Taking the value of n as 6 as an example, the channel excitation (current or voltage) value of the six primary colors obtained by adjusting the white point of the six-primary-color display screen is just synthesized into the white point (D65) as the primary color unit of the color space of the six-primary-color display screen. . That is, the six-primary color display screen obtains a six-primary color image through a color gamut mapping algorithm or a multispectral camera, and displays the obtained six-primary color image. Among them, when the six-primary color image is displayed, the D65 light source is selected as the white point, and through calculation and debugging, the channel signal parameters (that is, the channel excitation value referred to above) that can correctly display the white point of the six primary color LED sub-pixels are obtained. As shown in FIG. 11 , FIG. 11 is a schematic diagram of a six-primary color LED white point allocation according to an embodiment of the present invention.

In order to be compatible with the display of LED display screens with fewer primary colors in the related art, in this embodiment of the present invention, the method may further include: acquiring an image of n-k primary colors, where k is an integer greater than 1 and less than n; way to display the n-k primary color image on the dot matrix LED display. Through the above processing, the dot matrix LED display screen provided by the embodiments of the present invention can also display images with fewer primary colors. For example, in the case where the dot matrix LED display screen provided by the embodiment of the present invention is a six-primary-color display screen, k can take a value of 3, that is, the six-primary-color display screen of the embodiment of the present invention can be used for three primary colors in the related art. Primary color display display.

In an embodiment of the present invention, a storage medium is also provided, the storage medium includes a stored program, wherein when the program runs, the device where the storage medium is located is controlled to execute any of the above-mentioned methods for displaying images on a dot-matrix LED display screen.

In an embodiment of the present invention, a system for displaying images is also provided. FIG. 12 is a schematic diagram of a system for displaying images provided according to an embodiment of the present invention. As shown in FIG. 12 , the system 120 for displaying images includes: The power supply 122, the driving control circuit 124, and the dot matrix LED display screen 126 of any one of the above, wherein the power supply 120 is communicated with the driving control circuit 124 and the dot matrix LED display screen 126, and is used for the driving control circuit 124 and the dot matrix LED display screen 126. The LED display screen 126 is powered; the drive control circuit 124 is in communication with the above-mentioned dot matrix LED display screen 126 and is used to drive and control the LED display chips in the dot matrix LED display screen 126; the dot matrix LED display screen 126 is used for driving control based on The driving of the circuit 124 performs image display.

Compared with the LED display in the related art, the color gamut is greatly expanded due to the increase in the number of primary colors. FIG. 13 is a comparison diagram of the color gamut and sRGB color gamut of the six-primary color LED display screen provided according to the embodiment of the present invention. As shown in FIG. 13 , the dot matrix LED display screen provided by the embodiment of the present invention has significant color gamut. Domain improvement. Therefore, the dot-matrix LED screen provided by the embodiments of the present invention has the advantages of large display color gamut, low power consumption, and high color reproduction, and effectively solves the problem of LED display screens (for example, three-primary color LED display screens) in the related art. ) The problem that the color gamut is limited and the color reproduction is not high when displaying images.

Still taking the six-primary color LED display screen as an example, in the preferred embodiment of the present invention, its working process will be described.

The six-primary color display screen of the dot-matrix LED provided in the preferred embodiment of the present invention uses six kinds of LED sub-pixels with higher saturation to form one pixel point. Combined with the color gamut mapping algorithm, the ordinary three-primary color image is mapped to the six-primary color image, or the six-primary color image is directly obtained by using a multispectral camera. After that, the acquired six-primary-color image is displayed on the six-primary-color display. Since the six-primary color display has a larger color gamut, it has the advantage of reproducing high-saturation color scenes in nature and displaying high-saturation light source colors.

14 is a schematic diagram of the working process of the six-primary color LED display screen provided according to the preferred embodiment of the present invention. As shown in FIG. 14 , the working process of the six-primary color LED display screen mainly includes: (1) acquiring six-primary color images; ( 2) Display six primary color images. They are described below.

(1) Obtain six primary color images

Current mainstream image acquisition devices, such as Charge-coupled Device (CCD) or Complementary Metal-Oxide-Semiconductor (CMOS) sensors, are based on red, green and blue (RGB) channels. The Bayer filter obtains the gray value of each color channel, and then obtains it through processes such as color interpolation (Color Interpolation) and demosaicing (Demasking), and finally the obtained image is a three-channel (three primary color) image. Deriving a six-primary color image from an existing three-primary color image mainly uses a color gamut mapping algorithm to map the traditional three-primary color image to obtain a six-primary color image, which can be displayed on a six-primary color display. It should be noted that the color gamut mapping algorithm is relatively complex, and the scene adaptability may not be high. Therefore, preferably, a multispectral camera can be used to obtain images of six primary colors.

(2) Display six primary color images

According to the method shown in FIG. 11 above, find the ratio of the excitation (voltage or current) of the six sub-pixels obtained when the six LED sub-pixels in the embodiment of the present invention are exactly matched to the white field (D65 light source), as the ratio of the six primary colors unit. By applying excitation (voltage or current) proportional to the six-channel gray value of the six-primary color image to the six-primary color sub-pixels, the six-primary color image can be displayed correctly on the dot-matrix LED six-primary color display screen in the embodiment of the present invention. .

Based on the working process of the above-mentioned six-primary color LED display screen, the following specific implementation methods are provided.

Specific implementation 1:

According to the basic principles of human eye color vision uniformity and wavelength range as large as possible, the dominant wavelengths of six primary color LEDs are determined, which are: their corresponding chromaticity coordinates (x, y) as shown in Table 1:

Wd(nm) CIE-x CIE-y 450 0.1578 0.0192 478 0.1119 0.1181 495 0.065 0.429 530 0.1774 0.7456 582 0.5284 0.4702 642 0.7206 0.2789

Table 1

A Canon 1000D digital SLR camera on the market is used to obtain a three-primary color image based on the sRGB space, and a six-primary color image is obtained through the color gamut expansion algorithm in the color gamut mapping. displayed on the LED display.

Specific implementation 2:

The six-primary color LED display screen with the same parameters as in the specific embodiment 1 is used, and the image is collected by a static six-channel spectral camera, and displayed on the six-primary color LED display screen in the specific embodiment of the present invention.

The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments.

In the above-mentioned embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed technical content may be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units may be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or may be Integration into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of units or modules, and may be in electrical or other forms.

The units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes .

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (10)

1. A dot matrix LED display screen is characterized in that, each pixel of the dot matrix LED display screen is formed based on n primary colors, wherein, n is an integer greater than 3, and the color gamut formed by n primary colors is greater than red, The gamut of green and blue. 2 . The dot matrix LED display screen according to claim 1 , wherein the value of n is 6. 3 . 3. The dot matrix LED display screen according to claim 2, wherein the arrangement structure of the sub-pixels corresponding to 6 primary colors comprises one of the following: a hexagonal lattice arrangement structure, a 1×6 lattice arrangement structure, a 6 ×1 lattice arrangement structure, 2×3 rectangular lattice arrangement structure, 3×2 rectangular lattice arrangement structure, double-pin character rectangular lattice structure. 4. The dot matrix LED display screen according to claim 2 or 3, wherein the main wavelength ranges corresponding to the 6 primary colors are respectively: 440nm-460nm, 470nm-480nm, 490nm-510nm, 520nm-540nm, 560nm-600nm , 620nm-660nm. 5 . The dot matrix LED display screen according to claim 4 , wherein the dominant wavelengths corresponding to the six primary colors are: 450 nm, 478 nm, 495 nm, 530 nm, 582 nm, and 642 nm, respectively. 6 . 6. A method for displaying images based on the dot matrix LED display screen according to any one of claims 1 to 5, characterized in that, comprising: Get n primary color image; Determine the channel excitation value of the n primary colors that can correctly display the white point of the dot matrix LED display screen, and use the determined channel excitation value as the primary color unit of the dot matrix LED display screen; According to the determined primary color unit, the n-primary color image is displayed on the dot matrix LED display screen by outputting the gray value of the n-channel corresponding to the n-primary-color image source as the excitation value of the n-channel. 7. The method according to claim 6, wherein the n-primary color image is acquired by at least one of the following methods: Obtaining the m-primary color image, and obtaining the n-primary color image through a color gamut mapping algorithm, wherein the color gamut mapping algorithm is used to map the m-primary color image to the n-primary color image, where m is an integer greater than 1; The n-primary color image is acquired by shooting with a multispectral camera. 8. The method according to claim 6 or 7, wherein the method further comprises: Obtain an n-k primary color image, where k is an integer greater than 1 and less than n; The n-k primary color image is displayed on the dot matrix LED display screen by closing the k channel among the n channels. 9. A system for displaying images, comprising: a power supply, a drive control circuit, and the dot matrix LED display screen according to any one of claims 1 to 5, wherein, The power supply is used to supply power to the drive control circuit and the dot matrix LED display screen; The drive control circuit is used to drive and control the LED display chip in the dot matrix LED display screen; The dot matrix LED display screen is used for image display based on the driving of the driving control circuit. 10 . A storage medium, wherein the storage medium comprises a stored program, wherein when the program runs, a device where the storage medium is located is controlled to execute the method according to any one of claims 6 to 8 .

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