A method, system, display device, and storage medium for optimizing backlight brightness.

Abstract

This application discloses a backlight brightness optimization method, system, display device, and storage medium. The method is applied to a display device in which light-emitting diodes (LEDs) are installed. The backlight brightness optimization method includes: acquiring operating temperature data of the display device in different backlight areas, wherein the backlight area is an area equipped with the LEDs; acquiring characteristic information of the LEDs and obtaining the relationship between the temperature and current of the LEDs based on the characteristic information; obtaining the output current of the LEDs based on the relationship information and the operating temperature data; and driving the LEDs according to the output current to ensure that the brightness of the display device remains consistent in different backlight areas. This application can achieve the goal of improving the brightness uniformity and consistency of the screen display, thereby enhancing the user's visual experience.

Description

Technical Field

[0001] This application relates to the field of screen display technology, and in particular to a backlight brightness optimization method, system, display device, and storage medium. Background Technology

[0002] Existing Mini LED (mini light-emitting diode) backlights are all divided into thousands of zones or more, resulting in uneven heat distribution throughout the device. Consequently, the operating temperature conditions of the Mini LED backlights in different areas vary. Under long-term operation and with the same current drive, the temperature differences cause variations in the brightness of the Mini LED backlights in different areas, leading to poor uniformity and consistency of brightness. As a result, users cannot obtain the best experience.

[0003] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0004] The main purpose of this application is to provide a backlight brightness optimization method, system, display device and storage medium, which aims to solve the problem that the existing technology cannot optimize and improve the brightness uniformity and consistency of the display device according to the different heat distribution of the whole machine.

[0005] A first aspect of this application provides a backlight brightness optimization method applied to a display device, wherein the display device is equipped with light-emitting diodes (LEDs). The backlight brightness optimization method includes the following steps: acquiring operating temperature data of the display device in different backlight areas, wherein the backlight area is an area equipped with the LEDs; acquiring characteristic information of the LEDs and obtaining relationship information between the temperature and current of the LEDs based on the characteristic information; obtaining the output current of the LEDs based on the relationship information and the operating temperature data; and driving the LEDs according to the output current to ensure that the brightness of the display device remains consistent in different backlight areas.

[0006] Optionally, in one embodiment of this application, obtaining the operating temperature data of the display device in different backlight areas specifically includes: when the display device is input with a full black field signal, obtaining a heat distribution image of the display device; converting the heat distribution image to obtain the operating temperature data of the display device in different backlight areas.

[0007] Optionally, in one embodiment of this application, obtaining the heat distribution image of the display device specifically involves: obtaining an image of the display device captured by a thermal imager to obtain a heat distribution image of the display device in different backlight areas, wherein the thermal imager is positioned relative to the display device.

[0008] Optionally, in one embodiment of this application, the characteristic information is a first set of data relating the operating time, luminous flux, and temperature of the LED lamp, and a second set of data relating the forward current and light output; the relationship information is a target relationship. Obtaining the relationship information between the temperature and current of the LED lamp based on the characteristic information specifically includes: obtaining a first relationship between the temperature and luminous flux density of the LED lamp based on the first and second data; obtaining a second relationship between the luminous flux density and current of the LED lamp based on the first and second data; and obtaining a target relationship between the temperature and current of the LED lamp based on the first and second relationships.

[0009] Optionally, in one embodiment of this application, the backlight area includes a first area and a second area, the heat-generating component of the display device is correspondingly disposed with respect to the second area, and the operating temperature data includes a first temperature in the first area and a second temperature in the second area; the step of obtaining the output current of the light-emitting diode lamp based on the relationship information and the operating temperature data specifically includes: calculating the temperature difference between the first temperature and the second temperature; obtaining the reference current of the display device, and obtaining the current compensation value of the light-emitting diode lamp based on the reference current, the temperature difference and the target relationship; and determining the output current of the light-emitting diode lamp based on the reference current and the current compensation value.

[0010] Optionally, in one embodiment of this application, obtaining the current compensation value of the LED lamp based on the reference current, the temperature difference, and the target relationship specifically includes: determining the luminous flux difference of the LED lamp between the first region and the second region based on the reference current, the temperature difference, and the target relationship; and determining the current compensation value of the LED lamp based on the luminous flux difference and the second relationship.

[0011] Optionally, in one embodiment of this application, after driving the light-emitting diode lamp according to the output current, the method further includes: acquiring brightness information of the display device in different backlight areas; if it is determined from the brightness information that the display device meets the expected brightness uniformity requirement, then it is determined that the display device has completed backlight brightness optimization.

[0012] A second aspect of this application also provides a backlight brightness optimization system, wherein the backlight brightness optimization system includes:

[0013] A temperature acquisition module is used to acquire the operating temperature data of the display device in different backlight areas, wherein the backlight area is an area equipped with light-emitting diode lamps;

[0014] The relationship determination module is used to obtain the characteristic information of the light-emitting diode lamp and obtain the relationship information between the temperature and current of the light-emitting diode lamp based on the characteristic information;

[0015] The current calculation module is used to obtain the output current of the LED lamp based on the relationship information and the operating temperature data.

[0016] A current driving module is used to drive the light-emitting diode lamp according to the output current so that the brightness of the display device remains consistent in different backlight areas.

[0017] A third aspect of this application also provides a display device, wherein the display device includes: a memory, a processor, and a backlight brightness optimization program stored in the memory and executable on the processor, wherein when the backlight brightness optimization program is executed by the processor, it implements the steps of the backlight brightness optimization method as described above.

[0018] A fourth aspect of this application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a backlight brightness optimization program, and the backlight brightness optimization program, when executed by a processor, implements the steps of the backlight brightness optimization method as described above.

[0019] Beneficial effects: This application provides a backlight brightness optimization method, system, display device, and storage medium. In this method, by adjusting the current of the light-emitting diodes (LEDs) in different backlight areas using their temperature and the dimming characteristics of the LED areas, the brightness uniformity and consistency of the LEDs in each backlight area are made to be at the same level, thereby improving the brightness uniformity and consistency of the screen display and enhancing the user's visual experience. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a cross-sectional schematic diagram of the Mini LED backlit television of this application;

[0022] Figure 2 This is a schematic diagram of the Mini LED backlight in this application;

[0023] Figure 3 This is a schematic diagram showing the distribution of the Mini LED lights on the front of the TV casing, the signal board, the BCON board, and the power board on the rear of the TV casing in this application.

[0024] Figure 4 This is a flowchart of a preferred embodiment of the backlight brightness optimization method of this application;

[0025] Figure 5 This is a schematic diagram of thermal imager test temperature data in a preferred embodiment of the backlight brightness optimization method of this application;

[0026] Figure 6 This is a flowchart of the process of obtaining the overall temperature distribution by taking pictures with a thermal imager in a preferred embodiment of the backlight brightness optimization method of this application;

[0027] Figure 7 This is a schematic diagram of temperature distribution map and temperature data conversion in a preferred embodiment of the backlight brightness optimization method of this application;

[0028] Figure 8 This is a graph showing the relationship between forward current and light output in a preferred embodiment of the backlight brightness optimization method of this application;

[0029] Figure 9 This is a schematic diagram of the adjustment of the driving current of the Mini LED in different regions in a preferred embodiment of the backlight brightness optimization method of this application;

[0030] Figure 10 This is a curve showing the relationship between temperature and luminous flux density of a certain Mini LED in a preferred embodiment of the backlight brightness optimization method of this application;

[0031] Figure 11 This is a graph showing the relationship between the luminous flux density and current of a certain Mini LED in a preferred embodiment of the backlight brightness optimization method of this application;

[0032] Figure 12 This is a structural diagram of a preferred embodiment of the backlight brightness optimization system of this application;

[0033] Figure 13 This is a structural diagram of a preferred embodiment of the display device of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100. Temperature acquisition module; 200. Relationship determination module; 300. Current calculation module; 400. Current driving module. Detailed Implementation

[0036] To make the objectives, technical solutions, and effects of this application clearer and more explicit, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of this application and not all possible implementations. Based on the embodiments in this application, those skilled in the art can obtain other embodiments without creative effort, and these embodiments are also within the protection scope of this application.

[0037] In related technologies, due to varying heat distribution within the entire device, the operating temperature of Mini LED backlights in different areas will also differ. Even with the same current drive, temperature differences can cause variations in the brightness of Mini LED backlights in different areas. The luminous efficiency of LEDs is closely related to temperature; generally, luminous efficiency decreases as temperature increases. Therefore, Mini LED backlights operating in high-temperature environments may experience reduced luminous efficiency, thus affecting brightness.

[0038] Brightness uniformity refers to whether the brightness of different areas on a monitor or television screen remains consistent. For MiniLED backlit displays, if the brightness of the Mini LED backlights varies across different areas, it will result in uneven brightness distribution on the screen. Brightness consistency refers to whether the brightness of a monitor or television remains stable during prolonged use. If the brightness of the Mini LED backlights changes due to factors such as temperature during operation, it will affect the overall brightness consistency of the monitor or television. Deterioration in brightness uniformity and consistency directly impacts the picture quality of the monitor or television. Users may observe uneven brightness and alternating bright and dark areas on the screen, thus reducing the viewing or working experience. Temperature changes can also affect the color temperature and spectral distribution of the Mini LED backlights. If the color temperature shifts, it will lead to color distortion, causing the displayed colors to differ from the original colors, thereby affecting the user experience.

[0039] However, the existing design scheme does not adopt a method to optimize and improve the uniformity and consistency of brightness based on the different heat distribution of the whole machine.

[0040] This application embodiment can be applied to the following scenarios: using Mini LED (mini light-emitting diode) backlit televisions or Micro LED (micro light-emitting diode) direct-view display devices. The display device can be a television, computer, vehicle infotainment system, or other display screen. In this application embodiment, the display device is a television, and the light-emitting diode is a Mini LED.

[0041] The following will be combined with the appendix Figure 1 The architecture of the embodiments of this application will be described below:

[0042] See Figure 1 The Mini LED lights are fixed on the front of the TV casing (the front when the user is facing the screen); the heat-generating components include the power board, signal board, and BCON (Backlight Control) board, which are fixed on the back of the TV casing.

[0043] In one embodiment of this application, Figure 2 This is one method of backlight arrangement for Mini LEDs, but it is not limited to this and can also be applied to other types of backlight arrangements. The entire backlight board in this embodiment includes four harpoon-shaped light blocks. It can be understood that the light blocks can be freely designed and spliced ​​and driven according to different sizes.

[0044] See Figure 3 The front of the middle shell houses the Mini LED lights, while the rear contains the signal board, BCON board, and power board. During operation, the heat distribution on the signal board, BCON board, and power board differs from other areas. This results in different decay rates for the Mini LED lights in different heat areas, leading to inconsistent brightness even with the same current. Consequently, the brightness uniformity and overall brightness are affected, resulting in a poor viewing experience for the user.

[0045] The following description, with reference to the accompanying drawings, outlines a backlight brightness optimization method, system, display device, and storage medium according to embodiments of this application. Addressing the problem in the aforementioned related technologies that cannot optimize and improve the brightness uniformity and consistency of a display device based on variations in overall heat distribution, this application provides a backlight brightness optimization method. In this method, by utilizing the temperature of LEDs in different backlight areas and leveraging the dimming characteristics of LED areas, the current of the LEDs is adjusted to ensure that the brightness uniformity and consistency of the LEDs in each backlight area are at the same level. This achieves the goal of improving the brightness uniformity and consistency of the screen display, thereby enhancing the user's visual experience. This solves the technical problem in related technologies that cannot optimize and improve the brightness uniformity and consistency of a display device based on variations in overall heat distribution.

[0046] This application addresses the issue of inconsistent heat generation in different areas leading to reduced brightness uniformity and consistency. This application uses data on the overall heat distribution and regional current control to compensate and correct for this problem.

[0047] The technical solutions of this application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0048] The backlight brightness optimization method described in the preferred embodiment of this application, such as... Figure 4 As shown, the backlight brightness optimization method includes the following steps:

[0049] In step S101, the operating temperature data of the display device in different backlight areas are obtained, wherein the backlight area is the area equipped with the light-emitting diode lamp.

[0050] In one possible implementation, when the display device is input with a full black field signal, a heat distribution image of the display device is acquired; the heat distribution image is then converted to obtain the operating temperature data of the display device in different backlight areas.

[0051] For details, see Figure 5 and Figure 6 The test was conducted at a room temperature of 25±3℃ with no other heat sources. The distance between the thermal imager and the screen was adjusted to accommodate different TV sizes. The TV was set to a full black signal (R=0, G=0, B=0) and burned in for 1 hour. The screen was then photographed using the thermal imager to obtain heat distribution data. These two steps are fundamental to obtaining overall heat distribution data, ensuring the accuracy and reliability of the data.

[0052] In one possible implementation, during the image acquisition process, an image is acquired by a thermal imager of the display device to obtain a heat distribution image of the display device in different backlight areas, wherein the thermal imager is positioned relative to the display device.

[0053] Specifically, thermal imager or thermal sensor methods can be used to obtain heat distribution data of the Mini LED area. This application embodiment uses a thermal imager to illustrate obtaining heat distribution data (heat distribution image) of the Mini LED area. The Mini LED area refers to the area in a television equipped with a Mini LED backlight.

[0054] Furthermore, during the process of collecting heat distribution data using a thermal imager, the test environment was conducted at a room temperature of 25±3℃ to ensure the accuracy of the test results. There should be no other heat sources in the test environment to avoid interference with the test results. The thermal imager was placed in the center in front of the screen to ensure that the heat distribution of the Mini LED area could be fully captured. Depending on the size of the TV, the distance between the thermal imager and the screen could be adjusted appropriately to obtain the best measurement effect. The thermal imager was used to record the heat distribution data of the Mini LED area, and the data was analyzed to identify areas with uneven heat distribution and determine their location and range.

[0055] Furthermore, the images captured by the thermal imager are converted into specific temperature distribution data tables. The appropriate data precision can be selected based on the thermal imager's resolution and the backend data processing capabilities. This step transforms image information into actionable digital data, providing a direct reference for subsequent current adjustments.

[0056] like Figure 7 As shown, the image can be converted into a corresponding data distribution table using the thermal imager's own conversion function. This embodiment only illustrates a 640*320 resolution conversion. If the thermal imaging camera and backend processing data support this, higher precision data can be converted. This allows for the acquisition of specific temperature distribution data from the temperature distribution map, which can then be used as reference data for adjusting the Mini LED drive current. Through these steps, the operating temperature of the Mini LEDs in different areas of the entire device can be determined.

[0057] This application obtains the temperature of the Mini LED lamp by means of thermal imaging cameras, thermal sensors and other methods based on the different heat distribution of the whole machine. Then, by utilizing the dimming characteristics of Mini LED areas, the current is adjusted according to the temperature parameters of different areas to keep the brightness uniform and consistent at the same level, so as to ensure that users get the best visual effect.

[0058] In step S102, the characteristic information of the light-emitting diode lamp is obtained, and the relationship information between the temperature and current of the light-emitting diode lamp is obtained based on the characteristic information.

[0059] In one possible implementation, the characteristic information comprises first data regarding the operating time, luminous flux, and temperature of the LED lamp, and second data regarding the relationship between forward current and light output. The relationship information is a target relationship. In determining the target relationship, based on the first and second data, a first relationship between the temperature and luminous flux density of the LED lamp is obtained; based on the first and second data, a second relationship between the luminous flux density and current of the LED lamp is obtained; and based on the first and second relationships, the target relationship between the temperature and current of the LED lamp is obtained.

[0060] Specifically, the relationship between temperature and luminous flux is analyzed. Referring to the characteristic curves of temperature, operating time, and luminous flux, the impact of temperature on luminous flux is understood, thus determining that under the same operating time and drive current, higher temperatures result in lower luminous flux. This step provides the theoretical basis for adjusting the drive current, namely the inverse relationship between temperature and luminous flux.

[0061] Furthermore, based on the operating time, temperature, and luminous flux characteristics of Mini LEDs, higher temperatures result in lower luminous flux for the same operating time and driving current. This means that a Mini LED lamp in a high-temperature region requires a larger driving current to achieve the same brightness as a Mini LED in a low-temperature region. (See [reference]). Figure 8 The graph shows the relationship between forward current and light output. Considering the overall system, the temperature of the area will not exceed the range that the Mini LED can withstand, because the driving current will not exceed the maximum value that the Mini LED can withstand.

[0062] In step S103, the output current of the LED lamp is obtained based on the relationship information and the operating temperature data.

[0063] Based on the overall temperature distribution, the relationship between current and brightness, and the relationship between the light decay of Mini LED lights at different temperatures, this application adjusts the output current parameters of the Mini LED light's Driver IC (driver integrated circuit chip) to compensate for the brightness uniformity problem caused by temperature and improve the overall brightness uniformity of the device.

[0064] In one possible implementation, the backlight area includes a first area and a second area, the heat-generating component of the display device is correspondingly disposed in the second area, and the operating temperature data includes a first temperature in the first area and a second temperature in the second area. During the determination of the output current, the temperature difference between the first temperature and the second temperature is calculated; a reference current of the display device is obtained, and based on the reference current, the temperature difference, and the target relationship, a current compensation value for the LED is obtained; the output current of the LED is determined based on the reference current and the current compensation value.

[0065] In one possible implementation, the luminous flux difference of the LED lamp between the first region and the second region is determined based on the reference current, the temperature difference, and the target relationship; and the current compensation value of the LED lamp is determined based on the luminous flux difference and the second relationship.

[0066] Specifically, such as Figure 10 and Figure 11 As shown, determine the reference current by selecting a region with no heat-generating components or low heat generation (e.g., T1(X1, Y1)) whose temperature is close to room temperature, as a brightness reference level. Measure the Mini LED drive current Inor in this region; this current should be sufficient to produce the desired brightness level. Calculate the temperature difference. For other regions, such as T2(X2, Y2), calculate the temperature difference ΔT between it and the reference region: ΔT = T2(X2, Y2) - T1(X1, Y1). Determine the compensation current based on the temperature-luminous flux relationship curve (e.g., ...). Figure 1 (as shown) and luminous flux-current relationship curves (as shown) Figure 11 As shown, determine the luminous flux difference ΔL caused by the temperature difference. Based on the luminous flux difference ΔL and the luminous flux-current relationship, calculate the required adjustment of the driving current difference ΔI. That is, based on T1(X1,Y1) and T2(X2,Y2), we can correspond to L1(X1,Y1) and T2(X2,Y2), then ΔL = L2(X2,Y2) - L1(X1,Y1). Based on the value of ΔL, to achieve the same brightness, we can obtain ΔI (compensation current).

[0067] Further, see Figure 9In the diagram illustrating the adjustment of Mini LED drive current in different regions, T1(X1, Y1) and T2(X2, Y2) are listed below. T1(X1, Y1) and T2(X2, Y2) represent the temperatures at the X and Y axis positions of the Mini LED distribution. The data explains the adjustment method. Region T1(X1, Y1) has no heating components and is close to room temperature, which can be defined as the reference level for brightness under normal operating conditions. The Mini LED drive current is Inor (reference current). Region T2(X2, Y2) has a signal board heating component, increasing the brightness by ΔT compared to T1(X1, Y1). ΔT = T2(X2, Y2) - T1(X1, Y1). To achieve the same brightness reference level, and considering the operating time, the drive current Iadj = Inor + ΔI needs to be continuously adjusted. ΔI is determined based on the relationship between Mini LED temperature and luminous flux, as well as the relationship between luminous flux and current, to calculate the required current difference for compensation. See [link to relevant documentation]. Figure 10 and Figure 11 L1(X1, Y1) and L2(X2, Y2) represent the relative luminous flux density of the Mini LED distribution along the X and Y axes. ΔL is the luminous flux difference, which is also the compensation value. Based on the luminous flux difference ΔL and the luminous flux-current relationship, the driving current difference ΔI that needs to be adjusted is calculated.

[0068] In step S104, the light-emitting diode lamp is driven according to the output current so that the brightness of the display device remains consistent in different backlight areas.

[0069] Specifically, the driving current Inor in the reference region is added to the calculated compensation current ΔI to obtain the adjusted driving current Iadj (Iadj = Inor + ΔI). In the region that needs adjustment, such as T2(X2, Y2), a new driving current Iadj is set.

[0070] In one possible implementation, after implementing current adjustment, the results are verified to obtain the brightness information of the display device in different backlight areas; if the display device is determined to meet the expected brightness uniformity requirements based on the brightness information, then it is determined that the display device has completed backlight brightness optimization.

[0071] Specifically, use a luminance meter or related testing equipment to verify whether the adjusted brightness achieves the expected uniformity. If the brightness is still uneven, it may be necessary to collect data again and adjust the calculation method for the compensation current or redetermine the reference current. In actual production or application, implement the above adjustment methods and continuously monitor the brightness uniformity of the Mini LED screen. Based on the monitoring results, make fine adjustments as needed to ensure that the screen brightness is always kept at its optimal level.

[0072] Next, the backlight brightness optimization system proposed according to the embodiments of this application is described with reference to the accompanying drawings.

[0073] Figure 12 This is a structural diagram of the backlight brightness optimization system according to an embodiment of this application.

[0074] like Figure 12 As shown, the backlight brightness optimization system includes: a temperature acquisition module 100, a relationship determination module 200, a current calculation module 300, and a current driving module 400.

[0075] Specifically, the temperature acquisition module 100 is used to acquire the operating temperature data of the display device in different backlight areas, wherein the backlight area is an area equipped with light-emitting diode lamps;

[0076] The relationship determination module 200 is used to acquire the characteristic information of the light-emitting diode lamp and obtain the relationship information between the temperature and current of the light-emitting diode lamp based on the characteristic information.

[0077] The current calculation module 300 is used to obtain the output current of the light-emitting diode lamp based on the relationship information and the operating temperature data.

[0078] The current driving module 400 is used to drive the light-emitting diode lamp according to the output current so that the brightness of the display device remains consistent in different backlight areas.

[0079] Figure 13 A structural diagram of a display device provided in an embodiment of this application. The display device may include:

[0080] The memory 501, the processor 502, and the computer program stored on the memory 501 and capable of running on the processor 502.

[0081] When the processor 502 executes the program, it implements the backlight brightness optimization method provided in the above embodiments.

[0082] Furthermore, the display device also includes:

[0083] Communication interface 503 is used for communication between memory 501 and processor 502.

[0084] The memory 501 is used to store computer programs that can run on the processor 502.

[0085] The memory 501 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0086] If the memory 501, processor 502, and communication interface 503 are implemented independently, then the communication interface 503, memory 501, and processor 502 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EIS) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, Figure 13 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0087] Optionally, in a specific implementation, if the memory 501, processor 502, and communication interface 503 are integrated on a single chip, then the memory 501, processor 502, and communication interface 503 can communicate with each other through an internal interface.

[0088] Processor 502 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0089] This embodiment also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the backlight brightness optimization method described above.

[0090] One embodiment of this application provides a computer program product, including a computer program that, when executed by a processor, implements the features described in this application. Figure 1 The backlight brightness optimization method provided in any of the corresponding embodiments.

[0091] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0092] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0093] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0094] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable storage medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable storage medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable storage medium could be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0095] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0096] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0097] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0098] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

[0099] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for optimizing backlight brightness, characterized in that, Applied to a display device, wherein the display device is equipped with a light-emitting diode lamp; The backlight brightness optimization method includes: The operating temperature data of the display device in different backlight areas are obtained, wherein the backlight area is the area equipped with the light-emitting diode lamp; Obtain the characteristic information of the LED lamp, and obtain the relationship information between the temperature and current of the LED lamp based on the characteristic information; Based on the relationship information and the operating temperature data, the output current of the LED lamp is obtained; The output current drives the light-emitting diode lamp to ensure that the brightness of the display device remains consistent in different backlight areas; The characteristic information is the first data between the working time, luminous flux and temperature of the LED lamp, and the second data between the forward current and light output; the relationship information is the target relationship. The step of obtaining the relationship between the temperature and current of the LED lamp based on the characteristic information specifically includes: Based on the first data and the second data, a first relationship between the temperature and luminous flux density of the LED lamp is obtained, and based on the first data and the second data, a second relationship between the luminous flux density and current of the LED lamp is obtained. Based on the first relationship and the second relationship, the target relationship between the temperature and current of the LED lamp is obtained; The backlight area includes a first area and a second area, the heat-generating component of the display device is correspondingly disposed in the second area, and the operating temperature data includes a first temperature in the first area and a second temperature in the second area; The step of obtaining the output current of the LED lamp based on the relationship information and the operating temperature data specifically includes: Calculate the temperature difference between the first temperature and the second temperature; Obtain the reference current of the display device, and based on the reference current, the temperature difference value, and the target relationship, obtain the current compensation value of the light-emitting diode lamp; The output current of the LED lamp is determined based on the reference current and the current compensation value.

2. The backlight brightness optimization method according to claim 1, characterized in that, The acquisition of the operating temperature data of the display device in different backlight areas specifically includes: When the display device is input with a full black field signal, a heat distribution image of the display device is acquired; The heat distribution image is converted to obtain the operating temperature data of the display device in different backlight areas.

3. The backlight brightness optimization method according to claim 2, characterized in that, The acquisition of the heat distribution image of the display device specifically involves: The thermal imager acquires images of the display device to obtain heat distribution images of the display device in different backlight areas, wherein the thermal imager is positioned relative to the display device.

4. The backlight brightness optimization method according to claim 1, characterized in that, The step of obtaining the current compensation value of the LED lamp based on the reference current, the temperature difference, and the target relationship specifically includes: The luminous flux difference of the LED lamp between the first region and the second region is determined based on the reference current, the temperature difference, and the target relationship. The current compensation value of the LED lamp is determined based on the luminous flux difference and the second relationship.

5. The backlight brightness optimization method according to claim 1, characterized in that, The process of driving the LED lamp according to the output current further includes: Obtain the brightness information of the display device in different backlight areas; If the display device is determined to meet the expected brightness uniformity requirements based on the brightness information, then the display device has completed backlight brightness optimization.

6. A backlight brightness optimization system, characterized in that, The backlight brightness optimization system is applied to the backlight brightness optimization method according to any one of claims 1-5; The backlight brightness optimization system includes: A temperature acquisition module is used to acquire the operating temperature data of the display device in different backlight areas, wherein the backlight area is an area equipped with light-emitting diode lamps; The relationship determination module is used to obtain the characteristic information of the light-emitting diode lamp and obtain the relationship information between the temperature and current of the light-emitting diode lamp based on the characteristic information; The current calculation module is used to obtain the output current of the LED lamp based on the relationship information and the operating temperature data. A current driving module is used to drive the light-emitting diode lamp according to the output current so that the brightness of the display device remains consistent in different backlight areas.

7. A display device, characterized in that, The display device includes: a memory, a processor, and a backlight brightness optimization program stored in the memory and executable on the processor, wherein when the backlight brightness optimization program is executed by the processor, it implements the steps of the backlight brightness optimization method as described in any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a backlight brightness optimization program, which, when executed by a processor, implements the steps of the backlight brightness optimization method as described in any one of claims 1-5.

Images