Backlight brightness optimization method and system, display equipment and storage medium

Abstract

The invention discloses a backlight brightness optimization method and system, display equipment and a storage medium, the method is applied to the display equipment, and a light emitting diode lamp is arranged in the display equipment; the backlight brightness optimization method comprises the steps that working temperature data of the display device in different backlight areas are acquired, and the backlight areas are areas carrying the light emitting diode lamps; obtaining the characteristic information of the light emitting diode lamp, and obtaining the relation information between the temperature and the current of the light emitting diode lamp according to the characteristic information; obtaining the output current of the light-emitting diode lamp according to the relation information and the working temperature data; and driving the light-emitting diode lamp according to the output current, so that the brightness of the display equipment in different backlight areas is kept consistent. The purpose of improving the uniformity and consistency of the brightness displayed by the screen can be achieved, and the visual experience of a user is improved.

Description

Technical Field

[0001] The present 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 Art

[0002] The existing Mini LED (mini light-emitting diode) backlights are all above 1,000-level partitions, and the heat distribution in the whole machine is different. Therefore, the working temperature conditions of Mini LED backlights in different areas are different. When the Mini LED backlights work for a long time and are driven by the same current, the temperature difference causes the brightness of the Mini LED backlights in different areas to change, which in turn causes the brightness uniformity and consistency of the Mini LED backlights to deteriorate, and users cannot get the best experience.

[0003] Therefore, the prior art still needs 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, aiming to solve the problem in the prior art that it is impossible to 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 an embodiment of the present application provides a backlight brightness optimization method, which is applied to a display device, wherein the display device is provided with a light-emitting diode lamp; the backlight brightness optimization method comprises the following steps: the backlight brightness optimization method comprises: obtaining operating temperature data of the display device in different backlight areas, wherein the backlight area is an area equipped with the light-emitting diode lamp; obtaining characteristic information of the light-emitting diode lamp, and obtaining relationship information between the temperature and current of the light-emitting diode lamp based on the characteristic information; obtaining the output current of the light-emitting diode lamp based on the relationship information and the operating temperature data; and driving the light-emitting diode lamp according to the output current so that the brightness of the display device in different backlight areas remains consistent.

[0006] Optionally, in one embodiment of the present 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 the present application, acquiring the heat distribution image of the display device is specifically: acquiring an image of the display device captured by a thermal imager to obtain the heat distribution image of the display device in different backlight areas, wherein the thermal imager is arranged relative to the display device.

[0008] Optionally, in one embodiment of the present application, the characteristic information is first data between the working time, luminous flux and temperature of the light-emitting diode lamp and second data between the forward current and light output, and the relationship information is a target relationship; the relationship information between the temperature and current of the light-emitting diode lamp obtained according to the characteristic information specifically includes: obtaining a first relationship between the temperature and the luminous flux density of the light-emitting diode lamp according to the first data and the second data, and obtaining a second relationship between the luminous flux density and the current of the light-emitting diode lamp according to the first data and the second data; obtaining a target relationship between the temperature and the current of the light-emitting diode lamp according to the first relationship and the second relationship.

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

[0010] Optionally, in one embodiment of the present application, the current compensation value of the light-emitting diode lamp is obtained according to the reference current, the temperature difference and the target relationship, specifically including: determining the luminous flux difference of the light-emitting diode lamp between the first area and the second area according to the reference current, the temperature difference and the target relationship; determining the current compensation value of the light-emitting diode lamp according to the luminous flux difference and the second relationship.

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

[0012] A second aspect of the embodiment of the present application further provides a backlight brightness optimization system, wherein the backlight brightness optimization system comprises:

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

[0014] a relationship determination module, used to obtain characteristic information of the light emitting diode lamp, and obtain relationship information between the temperature and current of the light emitting diode lamp according to the characteristic information;

[0015] A current calculation module, used for obtaining the output current of the light emitting diode lamp according to the relationship information and the operating temperature data;

[0016] The 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 in different backlight areas is kept consistent.

[0017] The third aspect of the embodiments of the present 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 the backlight brightness optimization program implements the steps of the backlight brightness optimization method as described above when executed by the processor.

[0018] A fourth aspect of an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a backlight brightness optimization program, and when the backlight brightness optimization program is executed by a processor, the steps of the backlight brightness optimization method as described above are implemented.

[0019] Beneficial effects: The present application provides a backlight brightness optimization method, system, display device and storage medium. In the method, the current of the LED lamp is adjusted by adjusting the temperature of the LED lamp in different backlight areas in combination with the regional dimming characteristics of the LED lamp, so that the brightness uniformity and consistency of the LED lamps in each backlight area are at the same level, thereby achieving the purpose of improving the brightness uniformity and consistency of the screen display and enhancing the user's visual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1is a cross-sectional schematic diagram of the MiNi LED backlight TV of the present application;

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

[0023] Figure 3 This is a schematic diagram of the distribution of the MiNi LED lights on the front of the TV middle shell, the signal board, the BCON board and the power board on the back of the middle shell;

[0024] Figure 4 It is a flow chart of a preferred embodiment of the backlight brightness optimization method of the present application;

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

[0026] Figure 6 It is a flow chart of obtaining the temperature distribution of the whole machine by taking photos with a thermal imager in a preferred embodiment of the backlight brightness optimization method of the present application;

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

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

[0029] Fig. 9 This is a schematic diagram of adjusting MiNi LED driving current in different areas in a preferred embodiment of the backlight brightness optimization method of the present application;

[0030] Fig.10 It is a curve diagram 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 the present application;

[0031] Fig.11 is a curve diagram showing the relationship between the luminous flux density and the current of a certain MiNi LED in a preferred embodiment of the backlight brightness optimization method of the present application;

[0032] Fig.12 It is a structural diagram of a preferred embodiment of the backlight brightness optimization system of the present application;

[0033] Fig.13 It is a structural diagram of a preferred embodiment of the display device of the present application.

[0034] Description of reference numerals:

[0035] 100, temperature acquisition module; 200, relationship determination module; 300, current calculation module; 400, current driving module. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and effect of the present application clearer and more specific, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. The described embodiments are only possible technical implementations of the present application, not all possible implementations. Based on the embodiments in the present application, those skilled in the art can completely combine the embodiments of the present application to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present application.

[0037] In the related art, due to the different heat distribution in the whole machine, the working environment temperature of Mini LED backlights in different areas will also be different. Even if the same current is driven, the temperature difference may cause the brightness of Mini LED backlights in different areas to vary. The luminous efficiency of light-emitting diode lamps is closely related to temperature. Generally speaking, the luminous efficiency decreases with the increase of temperature. Therefore, the luminous efficiency of Mini LED backlights working in a high temperature environment may decrease, thereby affecting the brightness.

[0038] Brightness uniformity refers to whether the brightness of each area on the monitor or TV screen remains consistent. For MiniLED backlight displays, if the brightness of the Mini LED backlight in different areas is inconsistent, it will cause uneven brightness distribution on the screen. Brightness consistency refers to whether the brightness of a monitor or TV remains stable during long-term use. If the Mini LED backlight is affected by factors such as temperature during operation, causing the brightness to change, it will affect the brightness consistency of the entire monitor or TV. The deterioration of brightness uniformity and brightness consistency will directly affect the picture quality of the monitor or TV. Users may observe uneven brightness and alternating light and dark on the screen, thereby reducing the viewing or working experience. Changes in temperature may also affect the color temperature and spectral distribution of the Mini LED backlight. If the color temperature shifts, it will cause color distortion, making the displayed color different from the original color. This will affect the user experience.

[0039] However, in the existing design scheme, there is no solution to optimize and improve the brightness uniformity and consistency based on the different heat distribution of the whole machine.

[0040] The embodiments of the present application can be applied to the following scenarios, using Mini LED (mini light emitting diode) backlit TVs or Micro LED (micro light emitting diode) direct display devices. The display device can be a display screen such as a TV, a computer, or a car computer. The display device of the embodiment of the present application is a TV, and the light emitting diode lamp is a Mini LED lamp.

[0041] The following will be combined with the attached Figure 1 , the architecture of the embodiment of the present application is introduced:

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

[0043] In one embodiment of the present application, Figure 2 This is a Mini LED backlight arrangement, but it is not limited to this and can also be applied to other types of backlight arrangements. The entire backlight panel of the embodiment of the present application includes four harpoon lamp blocks. It can be understood that the lamp blocks can be freely designed and spliced ​​and driven according to different sizes.

[0044] See also Figure 3 , the front of the middle shell is the Mini LED lamp, and the back of the middle shell is the signal board, BCON board, and power board. When working, the heat distribution of the signal board, BCON board, and power board is inconsistent with other areas, which will cause the attenuation process of the MiniLED lamps in different heat areas to be different. Then, under the same current drive, the luminous brightness is inconsistent, which affects the brightness consistency and uniformity, resulting in a relatively poor viewing effect for users.

[0045] The following describes the backlight brightness optimization method, system, display device and storage medium of the embodiments of the present application with reference to the accompanying drawings. In view of the problem that the above-mentioned related technologies cannot optimize and improve the brightness uniformity and consistency of the display device according to the different heat distribution of the whole machine, the present application provides a backlight brightness optimization method. In this method, the current of the LED lamp is adjusted by adjusting the temperature of the LED lamp in different backlight areas in combination with the regional dimming characteristics of the LED lamp, so that the brightness uniformity and consistency of the LED lamps in each backlight area are at the same level, thereby achieving the purpose of improving the brightness uniformity and consistency of the screen display and improving the user's visual experience. As a result, the technical problem that the related technologies cannot optimize and improve the brightness uniformity and consistency of the display device according to the different heat distribution of the whole machine is solved.

[0046] In order to solve the above-mentioned problem that the brightness uniformity and consistency are deteriorated due to the inconsistent heat generation in different areas, the embodiments of the present application improve it by using the heat distribution data of the whole machine and the method of regional current control compensation correction.

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

[0048] The backlight brightness optimization method described in the preferred embodiment of the present application is as follows: Figure 4 As shown, the backlight brightness optimization method comprises the following steps:

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

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

[0051] For details, see Figure 5 and Figure 6 , test at room temperature of 25±3℃ and without other heat sources, adjust the distance between the thermal imager and the screen to adapt to different TV sizes; set the TV to full black field signal (R=0, G=0, B=0) and burn in for 1 hour, use the thermal imager to shoot the screen and obtain heat distribution data. These two steps are the basis for obtaining the heat distribution data of the whole machine, ensuring the accuracy and reliability of the data.

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

[0053] Specifically, the heat distribution data of the Mini LED area can be obtained by a thermal imager or a thermal sensor method. The embodiment of the present application uses a thermal imager method to illustrate the heat distribution data (heat distribution image) of the Mini LED area. The Mini LED area refers to the area in the TV equipped with a Mini LED backlight.

[0054] Furthermore, in the process of collecting heat distribution data using a thermal imager, the test environment is carried out at 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 is placed in the center in front of the screen to ensure that the heat distribution of the Mini LED area can be fully captured. According to the size of the TV, the distance between the thermal imager and the screen can be appropriately adjusted to obtain the best measurement effect. The thermal imager is used to record the heat distribution data of the Mini LED area, and the data is analyzed to find out the areas with uneven heat distribution and determine their location and range.

[0055] Furthermore, the image captured by the thermal imager is converted into a specific temperature distribution data table. The appropriate data accuracy can be selected according to the resolution of the thermal imager and the ability of the back-end to process data. This step is to convert the image information into actionable digital data, providing a direct reference for subsequent current adjustment.

[0056] like Figure 7 As shown, the image can be converted into a corresponding data distribution table through the conversion function of the thermal imager itself. The embodiment of this application only lists the conversion of 640*320 resolution. If the thermal imaging camera and the back-end processing data can support it, it can be converted into higher-precision data. In this way, specific temperature distribution data can be obtained from the temperature distribution diagram. This set of data can be used as reference data for Mini LED drive current adjustment. After the above steps, the Mini LED operating temperature in different areas of the whole machine can be known.

[0057] This application obtains the temperature of the Mini LED lamp through thermal imagers, thermal sensors, etc. according to the different heat distribution of the whole machine, and then uses the characteristics of Mini LED regional dimming to adjust the current according to the temperature parameters of different areas to keep the brightness uniformity and consistency at the same level, ensuring that users get the best visual effect.

[0058] In step S102, characteristic information of the light emitting diode lamp is acquired, and relationship information between the temperature and current of the light emitting diode lamp is obtained according to the characteristic information.

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

[0060] Specifically, the relationship between temperature and luminous flux is analyzed, and the characteristic curve of temperature, working time and luminous flux is referred to to understand the influence of temperature on luminous flux, so as to determine that under the same working time and driving current, the higher the temperature, the less luminous flux. This step provides a theoretical basis for adjusting the driving current, that is, the inverse relationship between temperature and luminous flux.

[0061] Furthermore, according to the working time, temperature, and luminous flux characteristics of Mini LED, the higher the temperature, the less luminous flux under the same working time and the same driving current. This means that if the Mini LED lamp in a high temperature area wants to have the same brightness as the Mini LED in a low temperature area, a larger driving current is required, see Figure 8 The relationship between forward current and light output is shown in the figure. Combined with the situation of the whole device, the temperature of the area will not exceed the tolerance range of Mini LED, because the driving current will not exceed the maximum value that Mini LED can withstand.

[0062] In step S103, the output current of the light emitting diode lamp is obtained according to the relationship information and the operating temperature data.

[0063] This application adjusts the output current parameters of the Driver IC (driver integrated circuit chip) of the Mini LED lamp according to the temperature distribution of the whole machine, the corresponding relationship between current and brightness, and the corresponding relationship between the light attenuation of the Mini LED lamp at different temperatures, compensates for the brightness consistency problem caused by temperature, and improves the brightness uniformity of the whole machine.

[0064] In a possible implementation, the backlight area includes a first area and a second area, the heating component of the display device is set corresponding 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. In the process of determining the output current, the temperature difference between the first temperature and the second temperature is calculated; the reference current of the display device is obtained, and the current compensation value of the light-emitting diode lamp is obtained according to the reference current, the temperature difference and the target relationship; the output current of the light-emitting diode lamp is determined according to the reference current and the current compensation value.

[0065] In one possible implementation, the luminous flux difference of the LED lamp between the first area and the second area 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, Fig.10 and Fig.11 As shown, determine the reference current, select an area without heat generating components or with low heat generation (such as T1 (X1, Y1)), whose temperature is close to room temperature, as the brightness reference level, measure the driving current Inor of the Mini LED in this area, which should be able to produce the required brightness level. Calculate the temperature difference. For other areas, such as T2 (X2, Y2), calculate the temperature difference ΔT between it and the reference area, ΔT = T2 (X2, Y2) - T1 (X1, Y1). Determine the compensation current, according to the temperature-luminous flux relationship curve (such as Figure 1 ) and the luminous flux-current relationship curve (as shown Fig.11 As shown), determine the luminous flux difference ΔL caused by the temperature difference. According to the luminous flux difference ΔL and the luminous flux-current relationship, calculate the driving current difference ΔI that needs to be adjusted. That is, according to T1 (X1, Y1) and T2 (X2, Y2), it can correspond to L1 (X1, Y1) and T2 (X2, Y2), then ΔL = L2 (X2, Y2) - L1 (X1, Y1), according to the value of ΔL, in order to achieve the same brightness, ΔI (compensation current) can be obtained.

[0067] For further information, see Fig. 9In the Mini LED driving current adjustment diagram for different regions, T1 (X1, Y1) and T2 (X2, Y2) are listed below, where T1 (X1, Y1) and T2 (X2, Y2) represent the temperature of the X-axis and Y-axis positions of the Mini LED distribution. The data explains the adjustment method. There are no heating components in the T1 (X1, Y1) region, which is close to normal temperature. It can be defined as the reference level of brightness under normal working conditions. The driving current of MiniLED is Inor (reference current). There are signal board heating components in the T2 (X2, Y2) region, which increases ΔT compared to T1 (X1, Y1). ΔT = T2 (X2, Y2) - T1 (X1, Y1). In order to achieve the same brightness reference level and combined with the working time, it is necessary to continuously adjust the driving current Iadj = Inor + ΔI. ΔI is based on the relationship between the temperature and luminous flux of the Mini LED, and the relationship between the luminous flux and current. The difference in current required is used as compensation. See Fig.10 and Fig.11 , L1(X1, Y1), L2(X2, Y2) represent the relative luminous flux density of the X-axis and Y-axis positions of the Mini LED distribution. ΔL is the luminous flux difference and also the compensation value. According to 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 in different backlight areas is kept consistent.

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

[0070] In a possible implementation, after current adjustment is implemented, the result is verified to obtain brightness information of the display device in different backlight areas; if it is determined based on the brightness information that the display device meets the expected brightness uniformity requirement, it is determined that the display device has completed backlight brightness optimization.

[0071] Specifically, use a brightness meter or related testing equipment to verify whether the adjusted brightness reaches the expected uniformity. If the brightness is still uneven, it may be necessary to re-collect data and adjust the calculation method of the compensation current or re-determine the reference current. In actual production or application, implement the above adjustment method and continuously monitor the brightness uniformity of the Mini LED screen. According to the monitoring results, make fine adjustments in a timely manner to ensure that the screen brightness is always maintained at the best state.

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

[0073] Fig.12 It is a structural diagram of the backlight brightness optimization system of an embodiment of the present application.

[0074] like Fig.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 a light-emitting diode lamp;

[0076] The relationship determination module 200 is used to obtain characteristic information of the light emitting diode lamp, and obtain the relationship information between the temperature and the current of the light emitting diode lamp according to the characteristic information;

[0077] A current calculation module 300, used to obtain the output current of the light emitting diode lamp according to 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 in different backlight areas is kept consistent.

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

[0080] A memory 501 , a processor 502 , and a computer program stored in the memory 501 and executable on the processor 502 .

[0081] When the processor 502 executes the program, the backlight brightness optimization method provided in the above embodiment is implemented.

[0082] Furthermore, the display device further comprises:

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

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

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

[0086] If the memory 501, the processor 502 and the communication interface 503 are implemented independently, the communication interface 503, the memory 501 and the processor 502 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EIS) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.13 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

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

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

[0089] This embodiment further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the above backlight brightness optimization method is implemented.

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

[0091] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

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

[0093] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0094] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable storage medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, a "computer-readable storage medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples (non-exhaustive list) of computer-readable storage media include the following: an electrical connection with one or N wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable storage medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways as necessary and then storing it in a computer memory.

[0095] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0096] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0097] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0098] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

[0099] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to this application.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A backlight brightness optimization method, characterized in that: Applicable to a display device, wherein the display device is provided with a light emitting diode lamp; The backlight brightness optimization method comprises: Acquire operating temperature data of the display device in different backlight areas, wherein the backlight area is an area equipped with the light emitting diode lamp; Acquiring characteristic information of the light emitting diode lamp, and obtaining relationship information between temperature and current of the light emitting diode lamp according to the characteristic information; According to the relationship information and the operating temperature data, an output current of the light emitting diode lamp is obtained; The light emitting diode lamp is driven according to the output current so that the brightness of the display device in different backlight areas is kept consistent.

2. The backlight brightness optimization method according to claim 1, characterized in that: The obtaining 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, obtaining a heat distribution image of the display device; The heat distribution image is converted to obtain 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 obtaining of the heat distribution image of the display device is specifically: An image of the display device captured by a thermal imager is acquired to obtain a heat distribution image of the display device in different backlight areas, wherein the thermal imager is arranged opposite to the display device.

4. The backlight brightness optimization method according to claim 2, characterized in that: The characteristic information is first data between the working time, luminous flux and temperature of the light emitting diode lamp and second data between the forward current and light output, and the relationship information is a target relationship; The obtaining the relationship information between the temperature and the current of the light emitting diode lamp according to the characteristic information specifically includes: Obtaining a first relationship between the temperature and the luminous flux density of the light-emitting diode lamp according to the first data and the second data, and obtaining a second relationship between the luminous flux density and the current of the light-emitting diode lamp according to the first data and the second data; According to the first relationship and the second relationship, a target relationship between the temperature and the current of the light emitting diode lamp is obtained.

5. The backlight brightness optimization method according to claim 4, characterized in that: The backlight area includes a first area and a second area, the heat generating component of the display device is arranged corresponding 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 obtaining the output current of the light emitting diode lamp according to the relationship information and the operating temperature data specifically includes: calculating a temperature difference between the first temperature and the second temperature; Acquire a reference current of the display device, and obtain a current compensation value of the light emitting diode lamp according to the reference current, the temperature difference and the target relationship; The output current of the light emitting diode lamp is determined according to the reference current and the current compensation value.

6. The backlight brightness optimization method according to claim 5, characterized in that: The step of obtaining the current compensation value of the light emitting diode lamp according to the reference current, the temperature difference and the target relationship specifically includes: Determining a luminous flux difference of the light emitting diode lamp between the first area and the second area according to the reference current, the temperature difference and the target relationship; A current compensation value of the light emitting diode lamp is determined according to the luminous flux difference and the second relationship.

7. The backlight brightness optimization method according to claim 5, characterized in that: The step of driving the light emitting diode lamp according to the output current further comprises: Acquire brightness information of the display device in different backlight areas; If it is determined according to the brightness information that the display device meets the expected brightness uniformity requirement, it is determined that the display device has completed the backlight brightness optimization.

8. A backlight brightness optimization system, characterized in that: The backlight brightness optimization system comprises: A temperature acquisition module, used to acquire operating temperature data of the display device in different backlight areas, wherein the backlight area is an area equipped with a light-emitting diode lamp; a relationship determination module, used to obtain characteristic information of the light emitting diode lamp, and obtain relationship information between the temperature and current of the light emitting diode lamp according to the characteristic information; A current calculation module, used for obtaining the output current of the light emitting diode lamp according to the relationship information and the operating temperature data; The 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 in different backlight areas is kept consistent.

9. A display device, characterized in that: The display device comprises: a memory, a processor, and a backlight brightness optimization program stored in the memory and executable on the processor, wherein the backlight brightness optimization program implements the steps of the backlight brightness optimization method according to any one of claims 1 to 7 when executed by the processor.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a backlight brightness optimization program, and when the backlight brightness optimization program is executed by a processor, the steps of the backlight brightness optimization method according to any one of claims 1 to 7 are implemented.

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