Control method and device of LED display equipment and LED display equipment

Abstract

The invention discloses a control method and device of LED display equipment and the LED display equipment. The method comprises the following steps: acquiring a driving current of the LED display equipment; based on the driving current, a target LED chip is determined from a plurality of LED chips of the LED display equipment, the light emitting wavelength ranges corresponding to the LED chips are different, and the LED chips are used for emitting light of the same color; based on the target LED chip, the LED display equipment is controlled to work, so that the color gamut of the LED display equipment is within a preset color gamut range, and the color gamut is used for indicating the color range which can be presented by the LED display equipment in the preset color space. According to the invention, the technical problem that the color gamut range of the LED display device fluctuates under the driving of wide current in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of LED display technology, and in particular to a control method and device for an LED display device and an LED display device. Background Art

[0002] LED display devices have been widely used in advertising display, stage background, information transmission, film and television production and other fields due to their high brightness, long life, energy saving and environmental protection. In recent years, with the continuous development of LED technology, the requirements for color performance of direct display products have been increasing, especially for the expansion and stability of the color gamut. The color gamut refers to the range of colors that LED display devices can present within a predetermined color space. It is directly related to the richness and accuracy of the display effect and is one of the important indicators for measuring the performance of display devices.

[0003] However, when facing wide current drive, the stability of the color gamut range of LED display devices in related technologies has become a technical problem that needs to be solved urgently. The light-emitting wavelength of LED chips will change with the change of driving current, and this phenomenon is particularly significant in green LED chips. For example, when the driving current is in a small range, the green LED chip can well meet the color gamut requirements of the Digital Cinema Initiatives-P3 (DCI-P3), but as the current increases, its wavelength change may exceed the preset range, resulting in the device being unable to maintain the stability and accuracy of the color gamut under high brightness conditions.

[0004] Most of the solutions in the related art rely on selecting LED chips with specific wavelengths in order to achieve the color gamut requirements within a fixed current range. However, this method has obvious limitations in practical applications: First, due to the characteristics of the LED chip wavelength changing with the current, this fixed chip configuration is difficult to maintain the stability of the color gamut range under wide current drive, especially in application scenarios that require high-brightness output, the fluctuation of the color gamut range will be more obvious. Secondly, the wavelength of the green LED chip is particularly affected by the current. Even in the low current range, a slight change in wavelength will have a significant impact on the color gamut range, which limits the adjustment range of the device brightness, thereby affecting the display effect and application flexibility.

[0005] With respect to the problem of color gamut fluctuations in LED display devices under wide current driving in the above-mentioned related technologies, no effective solution has been proposed so far. Summary of the invention

[0006] The embodiments of the present invention provide a control method and device of an LED display device and an LED display device, so as to at least solve the technical problem in the related art that the LED display device has color gamut fluctuation under wide current driving.

[0007] According to one aspect of an embodiment of the present invention, a control method for an LED display device is provided, comprising: obtaining a driving current of the LED display device; based on the driving current, determining a target LED chip from a plurality of LED chips of the LED display device, wherein the plurality of LED chips have different light emission wavelength ranges corresponding to different light emission wavelength ranges, and the plurality of LED chips are used to emit light of the same color; based on the target LED chip, controlling the LED display device to operate so that a color gamut of the LED display device is within a preset color gamut, wherein the color gamut is used to indicate a color range that the LED display device can present in a predetermined color space.

[0008] Optionally, determining a target LED chip from a plurality of LED chips of the LED display device based on the driving current comprises: determining a target current range to which the driving current belongs; and determining an LED chip among the plurality of LED chips that matches the target current range as the target LED chip, wherein the plurality of LED chips correspond to different current ranges.

[0009] Optionally, determining a target LED chip from a plurality of LED chips of the LED display device based on the driving current includes: determining a target light-emitting wavelength based on the driving current; determining a target wavelength range to which the target light-emitting wavelength belongs; and determining an LED chip among the plurality of LED chips that matches the target wavelength range as the target LED chip.

[0010] Optionally, determining the target light emitting wavelength based on the driving current includes: acquiring operating parameters of the LED display device, wherein the operating parameters include at least one of the following: a current operating temperature of the LED display device, and a chip aging degree; and determining the target light emitting wavelength based on the driving current and the operating parameters.

[0011] Optionally, determining the target emission wavelength based on the driving current and the operating parameters includes: obtaining the target emission wavelength using a wavelength evaluation model based on the driving current and the operating parameters, wherein the wavelength evaluation model pre-learns the correspondence between the driving current, the operating parameters and the emission wavelength.

[0012] Optionally, the multiple LED chips are multiple green LED chips.

[0013] According to another aspect of an embodiment of the present invention, there is also provided an LED display device, comprising: a plurality of green LED chips; a red LED chip; a blue LED chip; and a control chip connected to the plurality of green LED chips, the red LED chip, and the blue LED chip, for executing any one of the control methods for the LED display device.

[0014] According to another aspect of an embodiment of the present invention, a control device for an LED display device is also provided, including: an acquisition module, used to acquire a driving current of the LED display device; a chip determination module, used to determine a target LED chip from a plurality of LED chips of the LED display device based on the driving current, wherein the light emitting wavelength ranges corresponding to the plurality of LED chips are different, and the plurality of LED chips are used to emit light of the same color; a control module, used to control the LED display device to operate based on the target LED chip so that the color gamut of the LED display device is within a preset color gamut, wherein the color gamut is used to indicate a color range that the LED display device can present in a predetermined color space.

[0015] According to another aspect of an embodiment of the present invention, a non-volatile storage medium is provided, wherein the non-volatile storage medium stores a plurality of instructions, wherein the instructions are suitable for being loaded by a processor and executing any one of the control methods for an LED display device.

[0016] According to another aspect of an embodiment of the present invention, there is also provided an electronic device, comprising one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement any one of the control methods for the LED display device.

[0017] In an embodiment of the present invention, a driving current of an LED display device is obtained; based on the driving current, a target LED chip is determined from a plurality of LED chips of the LED display device, wherein the light emission wavelength ranges corresponding to the plurality of LED chips are different, and the plurality of LED chips are used to emit light of the same color; based on the target LED chip, the LED display device is controlled to operate so that the color gamut of the LED display device is within a preset color gamut, wherein the color gamut is used to indicate the color range that can be presented by the LED display device in a predetermined color space, thereby achieving the purpose of intelligently selecting a target LED chip from a plurality of same-color LED chips with different wavelength ranges for operation according to the real-time driving current, thereby achieving the technical effect that the color gamut of the LED display device is maintained within the preset color gamut in the entire current range, thereby ensuring the technical effect of the consistency and stability of the displayed color, and further solving the technical problem in the related art that the LED display device has color gamut fluctuations under wide current driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this 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 drawings:

[0019] Figure 1 is a flow chart of a control method of an LED display device according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of an optional relationship between red light wavelength and temperature change according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of an optional relationship between green light wavelength and temperature change according to an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of an optional relationship between blue light wavelength and temperature change according to an embodiment of the present invention;

[0023] Figure 5 is a structural schematic diagram of an LED display device according to an embodiment of the present invention;

[0024] Figure 6 It is a schematic diagram of the light source structure design of the LED display device according to the related art;

[0025] Figure 7 is a schematic diagram of a light source structure design of an optional LED display device according to an embodiment of the present invention;

[0026] Figure 8is a schematic diagram of a control device for an LED display device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] First, to facilitate understanding of the embodiments of the present invention, some terms or nouns involved in the present invention are explained below:

[0030] Color gamut refers to the range of colors that a display device, printing device, or imaging system can present or reproduce. The core of the concept of color gamut is color space, which is a mathematical model used to describe the composition and relationship of colors, while color gamut refers to the range of colors that a device can actually achieve within this color space.

[0031] The Digital Cinema Initiatives-P3 (DCI-P3) color gamut is a standard that defines the color range of digital movies. DCI-P3 is a color space specification proposed by the Digital Cinema Initiatives (DCI) in the film industry. It aims to provide a unified color standard for the creation, production and projection of digital film content, ensuring that movies can present consistent color effects on different projection systems.

[0032] According to an embodiment of the present invention, a method embodiment of controlling an LED display device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0033] Figure 1 is a flow chart of a control method of an LED display device according to an embodiment of the present invention. Figure 1 As shown, the method comprises the following steps:

[0034] Step S102, obtaining a driving current of the LED display device;

[0035] Optionally, the driving current refers to the current intensity passing through the internal circuit of the LED chip when it is working, and can be used as an important parameter for controlling the brightness and color output of the LED.

[0036] Optionally, the driving current of the LED chip can be monitored in real time by a current sensor provided in the LED display device, and the data can be fed back to the control chip in the LED display device. The driving current information can also be provided by an external controller or signal source, and the control chip of the LED display device receives these driving circuit signals as input.

[0037] Step S104, determining a target LED chip from a plurality of LED chips of the LED display device based on the driving current, wherein the plurality of LED chips correspond to different emission wavelength ranges, and the plurality of LED chips are used to emit light of the same color;

[0038] Optionally, the light emission wavelength of the LED chip is not fixed, but changes with the magnitude of the driving current. Figure 2 is a schematic diagram of an optional relationship between red light wavelength and temperature change according to an embodiment of the present invention, Figure 3 is a schematic diagram of an optional relationship between green light wavelength and temperature change according to an embodiment of the present invention, Figure 4 FIG. 1 is a schematic diagram of an optional relationship between blue light wavelength and temperature change according to an embodiment of the present invention. Figures 2 to 4As shown, at low current, the wavelength of the LED chip may shift less, while at high current, the wavelength shift may shift more. Multiple LED chips are used in an LED display device to emit light of the same color, but these chips have different emission wavelength ranges. For example, when displaying green light, the LED display device includes two green LED chips, G1 and G2, which have different wavelength characteristics at low current and high current, respectively, to meet the color gamut requirements. Based on the real-time driving current of the LED display device obtained, one or more of these multiple LED chips are selected as the target LED chip to work.

[0039] In the above LED chip selection mechanism based on driving current, through the combination of hardware design (i.e., using multiple LED chips with different wavelength ranges) and intelligent control algorithm (i.e., dynamically selecting chips according to driving current), the color gamut fluctuation problem caused by the change of LED chip wavelength with current can be effectively overcome, and the color stability and display effect of LED display devices in a wide current range can be significantly improved. In this way, even under different brightness requirements, LED display devices can maintain consistent and high-quality color presentation, meeting the high requirements of professional fields for color accuracy and consistency.

[0040] In an optional embodiment, the multiple LED chips are multiple green LED chips.

[0041] It should be noted that in LED display technology, the magnitude of the driving current directly affects the luminous efficiency and wavelength stability of the LED chip. Generally speaking, as the driving current increases, the brightness of the LED chip will increase, but the wavelength may shift, especially for green LED chips, where this wavelength shift may be more significant, thus affecting the overall color gamut of the display device. Figures 2 to 4 As shown, the shift of green light wavelength with temperature is greater than that of red light and blue light wavelength. Therefore, multiple green LED chips are provided corresponding to different emission wavelength ranges so that the color gamut of the LED display device can be kept within a stable color gamut range over the entire current range.

[0042] In an optional embodiment, based on the driving current, a target LED chip is determined from multiple LED chips of an LED display device, including: determining a target current range to which the driving current belongs; and determining an LED chip among the multiple LED chips that matches the target current range as the target LED chip, wherein the multiple LED chips correspond to different current ranges.

[0043] Optionally, in an LED display device, when different LED chips operate in different current ranges, their emission wavelengths may differ significantly, thereby affecting the color gamut performance of the display device. Therefore, when the current driving current value is received, it is determined to which pre-set target current range the current value belongs. These target current ranges are defined in advance based on the wavelength characteristics of the LED chips and the color gamut requirements, and each range corresponds to a group of LED chips that can maintain color gamut stability within this current range. Each LED chip in the LED display device (especially those chips used to emit the same color but with different wavelength ranges) is preset with a current range that matches it. When the driving current falls within a certain target current range, one or more chips are selected from the corresponding LED chipset as the target LED chips, which means that only those chips that can maintain color gamut stability under the current current will be activated to work. After determining the target current range to which the driving current belongs, the LED chips that match the current range are screened out and determined as the target LED chips. This ensures that no matter how the driving current changes, the LED chip with the best wavelength stability and color gamut performance can always be selected to work, thereby keeping the color gamut range of the LED display device within the preset color gamut range, that is, within a specific color space, the color range of the device will not exceed or fall below the standard due to fluctuations in the driving current.

[0044] Optionally, take the LED display device containing two green LED chips G1 and G2 as an example. They have different wavelength characteristics at low current and high current respectively to meet the color gamut requirements. For example, when the wavelengths of red and blue light remain unchanged, test the percentage change of the DCI-P3 color gamut when the wavelengths of green light change. It is necessary to ensure that the DCI-P3 color gamut range remains unchanged as much as possible, the wavelength of green light changes within about 6nm, and when the current changes from 0.4 to 5mA, the wavelength of the green light chip changes by more than 10nm. Therefore, the low current range can be set to less than or equal to 0.4mA, and the high current range can be set to greater than 0.4mA. When the detected driving current is less than or equal to 0.4mA, the target current range is determined to be the low current range, and the corresponding target LED chip selected is the G1 chip; if the detected driving current is greater than 0.4mA, the target current range is determined to be the high current range, and the corresponding target LED chip selected is the G2 chip. It should be noted that if the requirements cannot be met by dividing the current range into two sections, the current range can be divided into three sections, four sections, and so on according to the actual scene needs. Different current ranges correspond to different green LED chips.

[0045] The above method can effectively overcome the color gamut fluctuation problem caused by current changes, ensuring that LED display devices can maintain high color accuracy and consistency under wide current driving conditions, meeting the high color gamut requirements of professional display scenes. This intelligent current range and LED chip matching mechanism is a key step in achieving dynamic color gamut control, which can provide LED display devices with more flexible and accurate color management capabilities.

[0046] In an optional embodiment, a target LED chip is determined from multiple LED chips of an LED display device based on a driving current, including: determining a target light-emitting wavelength based on the driving current; determining a target wavelength range to which the target light-emitting wavelength belongs; and determining an LED chip among multiple LED chips that matches the target wavelength range as a target LED chip.

[0047] Optionally, a target luminous wavelength is determined based on the current driving current value. Since the luminous wavelength of the LED chip changes with the driving current, by establishing a relationship model between the driving current and the luminous wavelength (such as through experimental data or chip characteristic parameters), the ideal luminous wavelength that the LED chip should have under a specific driving current can be predicted, thereby maintaining the wavelength that the LED chip needs to emit in the preset color gamut range. In order to adapt to fluctuations and errors in actual operation, the wavelength range to which the target luminous wave belongs is further determined, and the wavelength range is used as the target wavelength range. The setting of the target wavelength range takes into account the tolerance of the wavelength and the tolerance of the color gamut change, ensuring that even if the luminous wavelength fluctuates within a certain range, the color gamut of the display device can still be maintained within the preset color gamut range. Further, those LED chips that match the target wavelength range are selected from the multiple LED chips. Each LED chip has its specific luminous wavelength range. By measuring and recording the characteristics of these chips in advance, a database or lookup table can be established so that after determining the target wavelength range, the LED chips that can emit the corresponding wavelength can be quickly found. These matching LED chips will be determined as target LED chips and driven by the control method to ensure that the color gamut of the LED display device is within the preset color gamut range.

[0048] Through the above LED chip selection mechanism based on the target emission wavelength and wavelength range, the color output of LED display devices can be managed more accurately, and the stability of the color gamut can be maintained by selecting the appropriate LED chip even when the driving current changes. This provides a higher level of color control capabilities for LED display devices, especially in application environments that pursue high color gamut accuracy and consistency, such as professional film and television production, high-end display systems, etc., which has important practical value.

[0049] In an optional embodiment, the target light emission wavelength is determined based on the driving current, including: obtaining operating parameters of the LED display device, wherein the operating parameters include at least one of the following: the current operating temperature of the LED display device, the degree of chip aging; based on the driving current and the operating parameters, the target light emission wavelength is determined.

[0050] Optionally, considering that the emission wavelength of LED real devices is not only affected by the current, in some application scenarios, it may also be affected by key operating parameters such as the current operating temperature of the LED display device and / or the degree of chip aging. For example, the emission wavelength of the LED chip will be affected by temperature. Generally, an increase in temperature will cause the wavelength to become longer. Therefore, the current operating temperature is one of the parameters that must be considered when determining the target emission wavelength. As the use time increases, the characteristics of the LED chip will change, such as the luminous efficiency decreases and the wavelength may also change. By monitoring the aging degree of the chip, the target emission wavelength under the current conditions can be more accurately predicted.

[0051] Combining the driving current with the obtained working parameters, and comprehensively analyzing the impact of these factors on the wavelength of the LED chip, not only can the target wavelength be determined based on the driving current, but also the impact of environmental factors and chip aging on the wavelength can be further compensated, thereby more accurately controlling the luminous characteristics of the LED chip, ensuring that the color gamut range of the LED display device can be stably maintained within the preset standard under various working conditions. The above methods can improve the accuracy and stability of color management of LED display devices, which is especially important for applications that need to maintain high color gamut accuracy in complex environments and long-term operation, such as outdoor advertising screens, professional studio equipment, etc.

[0052] In an optional embodiment, the target emission wavelength is determined based on the driving current and the operating parameters, including: based on the driving current and the operating parameters, using a wavelength evaluation model to obtain the target emission wavelength, wherein the wavelength evaluation model pre-learns the correspondence between the driving current, the operating parameters and the emission wavelength.

[0053] Optionally, the wavelength evaluation model is established by pre-learning and analyzing a large amount of experimental data and chip characteristic parameters, including the corresponding relationship between parameters such as driving current, operating temperature, chip aging degree and actual emission wavelength. The wavelength evaluation model can be based on any machine learning algorithm such as statistics, neural network, support vector machine, decision tree, or data fitting based on physical models and mathematical formulas. Through training, the wavelength evaluation model can learn the wavelength variation law of LED chips under various parameter combinations, forming a tool that can predict the target emission wavelength under given conditions.

[0054] In actual operation, when the driving current and operating parameters (such as temperature and aging degree) are received, these parameters are input into the wavelength evaluation model, which can calculate the target emission wavelength that the LED chip should have under the current conditions based on the correspondence between the learned parameters and the wavelength. Compared with the traditional wavelength prediction based on fixed rules or lookup tables, the above method can more flexibly adapt to the characteristics of different LED chips and changes in environmental parameters, and provide more accurate wavelength prediction results.

[0055] By introducing the wavelength evaluation model, the wavelength of LED display devices can be intelligently predicted and dynamically adjusted, effectively solving the problem of wavelength instability caused by changes in working parameters. The above method can not only improve the accuracy of color gamut control, but also enhance the adaptability of LED display devices in complex environments and the stability in long-term operation. It has significant technical advantages for application scenarios that pursue high-quality display effects, such as professional film and television production, high-end displays, virtual reality equipment, etc. In addition, the use of wavelength evaluation models can also simplify control algorithms, improve control efficiency, and provide possibilities for intelligent and automated management of LED display devices.

[0056] Step S106, based on the target LED chip, controlling the LED display device to operate so that the color gamut of the LED display device is within a preset color gamut range, wherein the color gamut is used to indicate the color range that the LED display device can present in a predetermined color space.

[0057] Optionally, the selected target LED chip has a wavelength characteristic that matches the current driving current, which ensures that no matter how the driving current changes, the color gamut range of the LED display device can be maintained within a preset color gamut range, that is, within a specific color space, the color range that the LED display device can present will not exceed or fall below the expected standard due to current fluctuations.

[0058] Through the above steps S102 to S106, the purpose of intelligently selecting a target LED chip to work from a plurality of same-color LED chips with different wavelength ranges according to the real-time driving current can be achieved, thereby achieving the technical effect of maintaining the color gamut range of the LED display device within the preset color gamut range within the entire current range, thereby ensuring the consistency and stability of the displayed color, and further solving the technical problem of color gamut range fluctuations of LED display devices under wide current drive in related technologies.

[0059] According to an embodiment of the present invention, a system embodiment for implementing the control method of the above-mentioned LED display device is also provided. Figure 5 is a schematic diagram of the structure of an LED display device according to an embodiment of the present invention. Figure 5As shown, the LED display device comprises: a plurality of green LED chips 50, a red LED chip 52, a blue LED chip 54, and a control chip 56, wherein:

[0060] A plurality of green LED chips 50;

[0061] Red LED chip 52;

[0062] Blue LED chip 54;

[0063] The control chip 56 is connected to a plurality of green LED chips 50 , red LED chips 52 , and blue LED chips 54 , and is used to execute any one of the above-mentioned control methods for the LED display device.

[0064] Optionally, the LED display device is configured to include multiple green LED chips (i.e., G1 chip, G2 chip...GN chip) instead of a single green chip. These green LED chips have different luminous wavelength ranges, so that the device can maintain the stability of the color gamut by selecting appropriate green LED chips under different driving currents. In addition to the green LED chip, the device also includes red and blue LED chips. The combination of red, green and blue LED chips can cover the entire color gamut range and realize the display of different colors. The control chip is configured to be connected to multiple green LED chips, red LED chips and blue LED chips. This connection means that the control chip can dynamically control the current of each LED chip, thereby affecting its luminous intensity and wavelength. The functional core of the control chip is to execute the control method of the LED display device proposed in the aforementioned embodiment. This means that the control chip can dynamically select the target LED chip from multiple green LED chips to work according to parameters such as the real-time driving current, operating temperature, chip aging degree, etc. of the device, to ensure that the color gamut range of the LED display device is within the preset color gamut range, and even when the current range is large, the stability of the color gamut and the quality of the display effect can be maintained.

[0065] In the above manner, through the combination of innovative design of the device structure (i.e., using multiple green LED chips with different wavelength ranges) and intelligent control algorithms, the LED display device of this embodiment can maintain high color accuracy and consistency under wide current driving conditions. By executing the above control method, the control chip can intelligently manage the current distribution of the LED chip and effectively overcome the color gamut fluctuation problem caused by current changes, especially in display applications that require high color gamut accuracy, such as professional film and television production, high-end display systems, etc., which can significantly improve the color performance and visual experience of the device.

[0066] It should be noted that Figure 6 It is a schematic diagram of the light source structure design of the LED display device in the related technology. Figure 7 is a schematic diagram of a light source structure design of an optional LED display device according to an embodiment of the present invention, such as Figure 6 As shown in the figure, the light source structure design of the LED display device in the related art only includes one red LED chip (R chip), one green LED chip (G chip) and one blue LED chip (B chip), that is, only one LED chip of each color of light is set. This method will cause fluctuations in the color gamut when the current range is large. Different from the related art, the light source structure of the LED display device in this embodiment can be provided with two or more LED chips emitting the same color of light. For example, in Figure 7 In the LED display device shown, a red LED chip (R chip), two green LED chips (i.e., G1 chip and G2 chip) and a blue LED chip (B chip) are provided, thereby achieving the purpose of intelligently selecting the target LED chip to operate from a plurality of same-color LED chips with different wavelength ranges according to the real-time driving current, thereby realizing the technical effect of maintaining the color gamut range of the LED display device within the preset color gamut range within the entire current range.

[0067] It should be noted that in this application Figure 5 and Figure 7 The specific structure of the LED display device shown in the figure is only for reference. In specific applications, the LED display device in this application can be compared to Figure 5 and Figure 7 The LED display devices shown have more or less structures.

[0068] It should be noted that any optional or preferred method for controlling an LED display device in the above method embodiments can be executed or implemented in the LED display device provided in this embodiment.

[0069] In addition, it is still necessary to explain that the optional or preferred implementation modes of this embodiment can refer to the relevant descriptions in the method embodiments, which will not be repeated here.

[0070] In this embodiment, a control device for an LED display device is also provided, and the device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the terms "module" and "device" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0071] According to an embodiment of the present invention, there is also provided an apparatus embodiment for implementing the control method of the above-mentioned LED display device. Figure 8is a schematic diagram of the structure of a control device for an LED display device according to an embodiment of the present invention. Figure 8 As shown, the control device of the above LED display device includes: an acquisition module 800, a chip determination module 802, and a control module 804, wherein:

[0072] An acquisition module 800 is used to acquire a driving current of an LED display device;

[0073] A chip determination module 802, connected to the acquisition module 800, is used to determine a target LED chip from a plurality of LED chips of the LED display device based on the driving current, wherein the plurality of LED chips correspond to different emission wavelength ranges, and the plurality of LED chips are used to emit light of the same color;

[0074] The control module 804 is connected to the chip determination module 802 and is used to control the operation of the LED display device based on the target LED chip so that the color gamut of the LED display device is within a preset color gamut range, wherein the color gamut is used to indicate the color range that the LED display device can present in a predetermined color space.

[0075] In the embodiment of the present invention, an acquisition module 800 is provided for acquiring a driving current of an LED display device; a chip determination module 802 is connected to the acquisition module 800 and is used to determine a target LED chip from a plurality of LED chips of the LED display device based on the driving current, wherein the light emission wavelength ranges corresponding to the plurality of LED chips are different, and the plurality of LED chips are used to emit light of the same color; a control module 804 is connected to the chip determination module 802 and is used to control the operation of the LED display device based on the target LED chip so that the color gamut of the LED display device is within a preset color gamut range, wherein the color gamut is used to indicate a color range that the LED display device can present in a predetermined color space, thereby achieving the purpose of intelligently selecting a target LED chip from a plurality of same-color LED chips with different wavelength ranges for operation according to the real-time driving current, thereby achieving the technical effect that the color gamut range of the LED display device is maintained within the preset color gamut range within the entire current range, thereby ensuring the technical effect of the consistency and stability of the displayed color, and further solving the technical problem in the related art that the color gamut range of the LED display device fluctuates under wide current driving.

[0076] It should be noted that the above modules can be implemented by software or hardware. For example, for the latter, it can be implemented in the following ways: the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0077] It should be noted that the acquisition module 800, chip determination module 802, and control module 804 correspond to steps S102 to S106 in the embodiment, and the examples and application scenarios implemented by the modules and corresponding steps are the same, but are not limited to the contents disclosed in the above embodiments. It should be noted that the modules as part of the device can be run in a computer terminal.

[0078] It should be noted that the optional or preferred implementation of this embodiment can refer to the relevant description in the embodiment, which will not be repeated here.

[0079] The control device of the above-mentioned LED display device may also include a processor and a memory. The above-mentioned acquisition module 700, chip determination module 702, control module 704, etc. are all stored in the memory as program modules, and the processor executes the above-mentioned program modules stored in the memory to realize corresponding functions.

[0080] The processor includes a kernel, which retrieves the corresponding program module from the memory. The kernel may be one or more. The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. The memory includes at least one memory chip.

[0081] According to an embodiment of the present application, an embodiment of a non-volatile storage medium is also provided. Optionally, in this embodiment, the non-volatile storage medium includes a stored program, wherein when the program is executed, the device where the non-volatile storage medium is located is controlled to execute any of the above-mentioned control methods for LED display devices.

[0082] Optionally, in this embodiment, the non-volatile storage medium may be located in any computer terminal in a computer terminal group in a computer network, or in any mobile terminal in a mobile terminal group, and the non-volatile storage medium includes a stored program.

[0083] Optionally, when the program is running, the device where the non-volatile storage medium is located is controlled to perform the following functions: obtaining a driving current of the LED display device; based on the driving current, determining a target LED chip from multiple LED chips of the LED display device, wherein the multiple LED chips correspond to different light-emitting wavelength ranges, and the multiple LED chips are used to emit light of the same color; based on the target LED chip, controlling the LED display device to operate so that the color gamut of the LED display device is within a preset color gamut, wherein the color gamut is used to indicate the color range that the LED display device can present in a predetermined color space.

[0084] According to an embodiment of the present application, an embodiment of a processor is also provided. Optionally, in this embodiment, the processor is used to run a program, wherein when the program is run, any of the control methods of the LED display device is executed.

[0085] According to an embodiment of the present application, an embodiment of a computer program product is also provided. When executed on a data processing device, the program is suitable for executing the steps of the control method for initializing any of the above-mentioned LED display devices.

[0086] Optionally, the above-mentioned computer program product, when executed on a data processing device, is suitable for executing a program that initializes the following method steps: obtaining a driving current of an LED display device; based on the driving current, determining a target LED chip from a plurality of LED chips of the LED display device, wherein the light-emitting wavelength ranges corresponding to the plurality of LED chips are different, and the plurality of LED chips are used to emit light of the same color; based on the target LED chip, controlling the LED display device to operate so that the color gamut of the LED display device is within a preset color gamut, wherein the color gamut is used to indicate the color range that the LED display device can present in a predetermined color space.

[0087] An embodiment of the present invention provides an electronic device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, the following steps are implemented: obtaining a driving current of an LED display device; based on the driving current, determining a target LED chip from a plurality of LED chips of the LED display device, wherein the light emission wavelength ranges corresponding to the plurality of LED chips are different, and the plurality of LED chips are used to emit light of the same color; based on the target LED chip, controlling the LED display device to operate so that the color gamut of the LED display device is within a preset color gamut, wherein the color gamut is used to indicate a color range that the LED display device can present in a predetermined color space.

[0088] The above sequence of the embodiments of the present invention is for description only and does not represent the superiority or inferiority of the embodiments.

[0089] In the above 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 can be made to the relevant descriptions of other embodiments.

[0090] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the above modules can be a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, modules or indirect coupling or communication connection of modules, which can be electrical or other forms.

[0091] The modules described above as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0092] In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of software functional modules.

[0093] If the above-mentioned integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable non-volatile storage medium. Based on this 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. The computer software product is stored in a non-volatile storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the various embodiments of the present invention. The aforementioned non-volatile 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.

[0094] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A control method for an LED display device, characterized in that: include: Obtain the driving current of the LED display device; Based on the driving current, determining a target LED chip from a plurality of LED chips of the LED display device, wherein the plurality of LED chips correspond to different light emission wavelength ranges and the plurality of LED chips are used to emit light of the same color; Based on the target LED chip, the LED display device is controlled to operate so that the color gamut of the LED display device is within a preset color gamut range, wherein the color gamut is used to indicate a color range that the LED display device can present in a predetermined color space.

2. The method according to claim 1, characterized in that The step of determining a target LED chip from a plurality of LED chips of the LED display device based on the driving current comprises: Determining a target current range to which the driving current belongs; An LED chip among the plurality of LED chips that matches the target current range is determined as the target LED chip, wherein the plurality of LED chips correspond to different current ranges.

3. The method according to claim 1, characterized in that The step of determining a target LED chip from a plurality of LED chips of the LED display device based on the driving current comprises: Based on the driving current, determining a target light emission wavelength; Determine a target wavelength range to which the target light emitting wavelength belongs; The LED chip among the plurality of LED chips that matches the target wavelength range is determined as the target LED chip.

4. The method according to claim 3, characterized in that The step of determining a target light emission wavelength based on the driving current comprises: Acquire the operating parameters of the LED display device, wherein the operating parameters include at least one of the following: the current operating temperature of the LED display device and the chip aging degree; The target light emission wavelength is determined based on the driving current and the operating parameters.

5. The method according to claim 4, characterized in that The determining the target light emission wavelength based on the driving current and the operating parameters includes: Based on the driving current and the operating parameters, a wavelength evaluation model is used to obtain the target emission wavelength, wherein the wavelength evaluation model pre-learns the corresponding relationship between the driving current, the operating parameters and the emission wavelength.

6. The method according to any one of claims 1 to 5, characterized in that The plurality of LED chips are a plurality of green LED chips.

7. An LED display device, characterized in that: include: Multiple green LED chips; Red LED chip; Blue LED chip; A control chip is connected to the plurality of green LED chips, the red LED chip, and the blue LED chip, and is used to execute the control method of the LED display device according to any one of claims 1 to 5.

8. A control device for an LED display device, characterized in that: include: An acquisition module, used for acquiring a driving current of an LED display device; A chip determination module, configured to determine a target LED chip from a plurality of LED chips of the LED display device based on the driving current, wherein the plurality of LED chips correspond to different light emission wavelength ranges and the plurality of LED chips are configured to emit light of the same color; A control module is used to control the LED display device to operate based on the target LED chip so that the color gamut of the LED display device is within a preset color gamut range, wherein the color gamut is used to indicate the color range that the LED display device can present in a predetermined color space.

9. A non-volatile storage medium, characterized in that: The non-volatile storage medium stores a plurality of instructions, and the instructions are suitable for being loaded by a processor and executed by the control method of the LED display device according to any one of claims 1 to 6.

10. An electronic device, characterized in that: It includes one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the control method of the LED display device described in any one of claims 1 to 6.

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