Display backlight assembly, method of using the same, and display device

Abstract

The invention discloses a display backlight assembly, a using method thereof and display equipment. The display backlight assembly comprises a light emitting module, a power supply module and a control module. The light emitting module comprises a first LED lamp emitting red light, a second LED lamp emitting green light and a third LED lamp emitting blue light. And the first LED lamp, the second LED lamp and the third LED lamp are connected in parallel to the power supply module. And the control module comprises a first control interface, a second control interface and a third control interface which are respectively used for adjusting the working current of the first LED lamp, the second LED lamp and the third LED lamp. The display backlight assembly has a plurality of light emitting modules in which a plurality of first LEDs are connected in parallel to a first interface, a plurality of second LEDs are connected in parallel to a second interface control, and a plurality of third LEDs are connected in parallel to a third interface control. The dynamic adjustment of the backlight color temperature can be realized by accurately adjusting the proportion of the light rays with different colors. The requirements of the display device for color temperature adjustment in different environments can be met, and the display effect and the user experience are improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display backlight assembly, a use method and a display device. Background Art

[0002] Currently, TFT LCD (Thin Film Transistor Liquid Crystal Display) modules are facing the challenge of reducing the damage of blue light to human eyes in design. To this end, the industry has developed standards such as Low Blue and Eyesafe, which have clear requirements for the correlated color temperature (CCT) of the display, usually requiring the color temperature to be controlled between 5500K and 7000K.

[0003] In the initial stage of product development, engineers usually simulate the combination of LED light source and color filter (CF) to select appropriate materials and design parameters. However, in the actual production process, the measured color temperature value is often different from the simulation result. Sometimes, the measured color temperature may exceed 7000K, causing the product to fail to meet the relevant standards.

[0004] To solve this problem, the current common method is to enable the automatic contrast control (ACC) function in the timing controller (TCON) to adjust the color temperature. Although this method can meet the color temperature standard to a certain extent, it also causes some new problems. For example, enabling the ACC function may reduce the transmittance of the display module, resulting in a decrease in screen brightness. In addition, it may also increase the response time of the liquid crystal, affecting the display effect of dynamic images.

[0005] Therefore, how to accurately control the color temperature without relying on turning on the ACC function while maintaining stable display performance has become a technical problem that the industry urgently needs to solve. Summary of the invention

[0006] The purpose of the present application is to provide a display backlight assembly, a method of use and a display device, which can achieve dynamic adjustment of color temperature by adjusting the ratio of light from different colors of LED lights in a light-emitting module.

[0007] To achieve the above objectives: The present invention provides a display backlight assembly, comprising: The light-emitting module comprises a first LED lamp emitting red light, a second LED lamp emitting green light, and a third LED lamp emitting blue light; A power module, the power module provides working current for the light emitting module, and the plurality of LED lamps are connected in parallel to the power module; A control module, the control module is connected to the light emitting module and adjusts the working current of the plurality of LED lamps; The number of the light-emitting modules is multiple; The control module includes a first control interface, a second control interface and a third control interface; The first LED lamps of the plurality of light-emitting modules are all connected in parallel to the first control interface; The second LED lamps are all connected in parallel to the second control interface; The third LED lamps are all connected in parallel to the third control interface.

[0008] Furthermore, the control module comprises: Feedback circuit, detecting the operating current of each LED lamp; A logic control unit, generating a current control signal according to a detection result of the feedback circuit; A current regulating unit is used to adjust the operating current of each LED lamp according to the current control signal.

[0009] Further, The logic control unit generates the current control signal according to the detection result of the feedback circuit and a preset spectrum curve and / or light color parameter.

[0010] Furthermore, the surface of the first LED lamp is provided with red fluorescent glue; the surface of the second LED lamp is provided with green fluorescent glue; and the surface of the third LED lamp is not provided with fluorescent glue.

[0011] Further, the cathodes of the first LED lamp, the second LED lamp and the third LED lamp are connected to the corresponding first control interface, the second control interface and the third control interface respectively; Anodes of the first LED lamp, the second LED lamp and the third LED lamp are connected to the power module via a common power connection point.

[0012] Furthermore, the present invention provides a method for using a display backlight assembly, which is implemented by the above-mentioned display backlight assembly, and includes: Providing working current to the light emitting module through the power supply module; The multiple LED lights emit light of different colors respectively; The operating current of the plurality of LED lamps is adjusted by the control module.

[0013] Furthermore, the light color information of the plurality of LED lights is obtained through the control module, and the corresponding spectrum curve and light color parameters are generated according to the spectrum data of the light color information; According to the spectrum curves and light color parameters of the multiple LED lamps, the distribution ratio of the working current provided by the power module to the multiple LED lamps is adjusted.

[0014] Furthermore, the control module includes a feedback circuit, a logic control unit and a current regulating unit; Acquiring the operating current of the plurality of LED lamps through the feedback circuit; Calculating the current color temperature value according to the working current, the spectrum curve and the light color parameters by means of a logic control unit; Determining whether the color temperature value exceeds a preset target color temperature value, and if so, generating an adjustment signal; The distribution ratio of the working current provided by the power module to the multiple LED lamps is adjusted according to the adjustment signal.

[0015] Furthermore, the present invention provides a display device, which includes the display backlight assembly as claimed in claim 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a system module of a display backlight assembly provided by an embodiment of the present invention; Figure 2 A schematic diagram of a light emitting module provided by an embodiment of the present invention; Figure 3 A schematic diagram of a display backlight assembly provided by an embodiment of the present invention; Figure 4 A schematic diagram of a flow chart of a display backlight assembly and a method of using the same provided by an embodiment of the present invention; Figure 5 A schematic diagram of a specific flow chart of a display backlight assembly and a method of using the same provided by an embodiment of the present invention; Figure 6 This is an example diagram of color temperature adjustment provided by an embodiment of the present invention.

[0017] In the figure: 1. light emitting module; 11. first LED lamp; 12. second LED lamp; 13. third LED lamp; 2. power module; 3. control module. DETAILED DESCRIPTION

[0018] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0019] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0020] It should be understood that, although the terms first, second, third, etc. may be used to describe various information in this article, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this article, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "at the time of..." or "when..." or "in response to determination". Furthermore, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising", "including" indicate that there are described features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Thus, “A, B, or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A, B, and C.” An exception to this definition will occur only when a combination of elements, functions, steps, or operations are inherently mutually exclusive in some manner.

[0021] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0022] It should be noted that, in this article, step codes such as S101, S102, etc. are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial limitation on the sequence. When implementing the step, those skilled in the art may execute S102 first and then S101, etc., but these should all be within the scope of protection of this application.

[0023] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0025] The following is an explanation of the terms that may be involved in this application, as follows: See also Figure 1 The present invention provides a display backlight assembly, comprising a light emitting module 1, a power module 2 and a control module 3. The display backlight assembly uses a plurality of LED lamps to provide light of different colors, provides a stable working current through the power module 2, and adjusts the working current of each LED lamp through the control module 3 to achieve the desired backlight effect and color temperature adjustment.

[0026] The light emitting module 1 includes a plurality of LED lamps, each of which can emit light of different colors. Common colors include: Red LED lamp: mainly emits red light with a wavelength of approximately 620-700 nm.

[0027] Green LED light: mainly emits green light with a wavelength of approximately 500-570 nm.

[0028] Blue LED lamp: mainly emits blue light with a wavelength of about 450-495 nm.

[0029] Yellow LED lamp: mainly emits yellow light with a wavelength of about 570-590 nm.

[0030] Purple LED lamp: mainly emits purple light with a wavelength of about 380-450 nm.

[0031] The power module 2 provides a stable working current for the light emitting module 1. A plurality of LED lamps are connected in parallel to the power module 2, which ensures that each LED lamp can obtain the required current, and the adjusted current does not change the total output current of the power module 2.

[0032] The control module 3 is responsible for adjusting the working current of each LED lamp, thereby controlling the output of light of different colors. The control module 3 adjusts the current of each LED lamp through the current adjustment unit to achieve the required color temperature adjustment or color balance.

[0033] See also Figure 2 The light emitting module 1 includes three colors of LED lamps, namely a first LED lamp 11, a second LED lamp 12 and a third LED lamp 13. The first LED lamp 11 is used to emit red light, the second LED lamp 12 is used to emit green light, and the third LED lamp 13 is used to emit blue light. The three colors of LED lamps can cover a wide range of color temperatures by combining and outputting light.

[0034] In actual use, the proportion of each color light in the total output light can be changed by adjusting the operating current of different color LED lights through the control module 3, thereby achieving color temperature adjustment. During the color temperature adjustment process, the total current remains unchanged, but the current distribution ratio will be dynamically adjusted according to the target color temperature.

[0035] When a higher color temperature is required, the control module 3 increases the operating current of the third LED lamp 13 (blue light LED lamp) and reduces the operating current ratio of the first LED lamp 11 (red light LED lamp), thereby increasing the blue light output ratio and improving the overall color temperature; when a lower color temperature is required, the control module 3 increases the operating current ratio of the first LED lamp 11 and reduces the operating current ratio of the third LED lamp 13, thereby enhancing the red light output ratio and reducing the overall color temperature.

[0036] See also Figure 3 The light emitting module 1 is composed of a plurality of units, each of which includes a red light, a green light and a blue light LED lamp. The first LED lamp 11, the second LED lamp 12 and the third LED lamp 13 of the plurality of light emitting modules 1 are respectively connected in parallel to the first control interface, the second control interface and the third control interface of the control module 3.

[0037] The current regulating unit of the control module 3 adjusts the current ratio of each control interface in real time according to the preset spectrum curve and / or light color parameters to change the working current of each LED lamp, thereby adjusting the color temperature. This design allows the backlight component to flexibly adjust the color temperature in different display scenarios while maintaining the stability of the brightness.

[0038] In one embodiment, the control module 3 is composed of a feedback circuit, a logic control unit and a current regulating unit. The feedback circuit monitors the operating current of the LED lamp, the logic control unit generates a current control signal according to the feedback information, and the current regulating unit adjusts the operating current of each LED lamp according to the current control signal to achieve precise adjustment of color temperature and brightness.

[0039] In one embodiment, the logic control unit is used to generate the current control signal according to the detection result of the feedback circuit and a preset spectral curve and / or light color parameter.

[0040] By using the spectral curve, the logic control unit can decide how to adjust the current according to the spectral characteristics of different LED lamps to ensure the desired color temperature and brightness in different display modes. For example, if the display requires a higher blue output, the logic control unit will increase the current of the blue LED lamp based on the preset spectral curve, while keeping the current of other color LED lamps within the appropriate range to achieve the target color temperature.

[0041] As an additional reference standard, the light color parameter can be used to further accurately adjust the current ratio of the LED lamp to ensure that the output light color of each LED lamp meets the color requirements of the display. By combining the feedback circuit data with the spectrum curve and light color parameters, the logic control unit can generate appropriate current control signals in real time to ensure the color temperature and brightness adjustment function of the display in different environments.

[0042] In a specific embodiment, the surface of the first LED lamp 11 is coated with red fluorescent glue, and the red light fluorescence is stimulated by the blue light chip to achieve red light output. The surface of the second LED lamp 12 is coated with green fluorescent glue, and the green light fluorescence is stimulated by the blue light chip to achieve green light output. The surface of the third LED lamp 13 is not coated with fluorescent glue, and the blue light emitted by the blue light chip is directly used as the output light source.

[0043] The design of not coating the surface of the blue light LED lamp (third LED lamp 13) with fluorescent glue is to adapt to application scenarios that require high color temperature. Under high color temperature conditions, the proportion of blue light needs to occupy a higher proportion in the overall output light. Directly using blue light output can avoid the loss of fluorescent glue absorbing part of the blue light and converting it into other colors of light, thereby ensuring that the blue light output efficiency is maximized, while improving the overall light efficiency to meet the needs of high color temperature scenes. The first LED lamp 11 and the second LED lamp 12 convert part of the blue light emitted by the blue light chip into red light and green light by coating red and green fluorescent glue. This design enables the light-emitting module 1 to have the ability to output light in the three basic colors of red, green and blue, and can adjust the proportion of the three colors of light through the control module 3 to achieve dynamic adjustment of the color temperature.

[0044] In a scene that requires a higher color temperature (cold color), the control module 3 increases the working current of the blue LED lamp (third LED lamp 13) to increase the proportion of blue light in the output light, thereby improving the overall color temperature. At this time, the wavelength of the blue LED lamp is between 450-495 nm, and its spectral distribution curve will shift to the blue light area, improving the cold color temperature effect.

[0045] When a scene with a lower color temperature (warm tone) is required, the control module 3 increases the current of the red LED lamp (first LED lamp 11) to increase the output ratio of red light, thereby reducing the overall color temperature. At this time, the wavelength of the red LED lamp is between 620-700nm, and by adjusting its output, the output light can be biased towards warm tones.

[0046] The output ratio of the green LED lamp (the second LED lamp 12) can be adjusted according to actual needs to fine-tune the color temperature. For example, in some cases, it may be necessary to reduce the output of green light to increase the ratio of red light and blue light to adjust the balance of color temperature and ensure the naturalness of light.

[0047] Through the above design, three LED lights with different spectra output red light, blue light and green light respectively, form white light through optical mixing, and adjust the current ratio of each branch circuit through the control module 3, so as to realize the dynamic adjustment function of color temperature.

[0048] This implementation is suitable for scenarios that require high-precision color temperature control and wide color gamut display, such as LCD screens, notebook screens, etc., and has significant advantages in reducing blue light damage and meeting Eyesafe standards.

[0049] In a specific embodiment, the light emitting module 1 includes a first LED lamp 11, a second LED lamp 12 and a third LED lamp 13, which are respectively used to emit red light, green light and blue light. The cathode of each LED lamp is respectively connected to the corresponding first control interface, the second control interface and the third control interface. The anodes of all LED lamps share a common power connection point, which is connected to the output end of the power module 2 to provide a stable working current for the light emitting module 1.

[0050] Specifically, the cathodes of the first LED lamp 11, the second LED lamp 12 and the third LED lamp 13 are respectively connected to the first, second and third control interfaces in the control module 3. The control module 3 adjusts the working current of each LED lamp through these control interfaces, thereby controlling the ratio of light color output and realizing dynamic adjustment of color temperature. Through this connection mode, the control module 3 can independently control the current of each LED lamp while maintaining the overall stability of the system.

[0051] The anodes of all LED lamps share a common power connection point, which means that the positive poles of each LED lamp are powered by the same power module 2. This design enables the power module 2 to provide a uniform operating current to the light-emitting module 1, ensuring that each LED lamp can work stably at different current ratios and meet the color temperature adjustment requirements in different scenarios.

[0052] The current provided by the power module 2 is input to all LED lamps through the common power connection point. Through the adjustment of the control module 3, the current of each LED lamp can be distributed as needed to change the color ratio of its output light, thereby achieving the adjustment of color temperature. During the adjustment process, the total current remains stable, and the control module 3 changes the output ratio of red light, green light and blue light by adjusting the distribution ratio of the current to accurately adjust the color temperature.

[0053] This design ensures efficient operation of the system under different brightness and color temperature requirements, and ensures the stability and reliability of the backlight module.

[0054] See also Figure 6 In actual application scenarios, the LED liquid crystal display module in the above embodiment is described in detail according to specific brightness and color temperature requirements: Assuming that a certain brightness requirement is met, the total driving current of the system is the sum of the red light driving current A, the green light driving current B, and the blue light driving current C, that is, A+B+C milliamperes (mA). In this default configuration, the correlated color temperature (CCT) of the system is 7000 K.

[0055] To meet new color temperature requirements, such as adjusting the correlated color temperature to 6000 K while keeping the total brightness constant, the control module 3 needs to dynamically adjust the current in each branch circuit. The specific steps are as follows: Set the red light drive current to A+x+y mA (add some current to increase the proportion of red light).

[0056] Set the green drive current to B−x mA (reduce some current to reduce the proportion of green light).

[0057] Set the blue light drive current to C−y mA (reduce some current to reduce the proportion of blue light).

[0058] Through the above adjustment, the control module 3 dynamically distributes the total current to ensure that the sum of the driving current remains A+B+C to maintain the total brightness unchanged. At the same time, by accurately controlling the current ratio of each LED lamp branch circuit, the correlated color temperature is adjusted from 7000 K to 6000 K.

[0059] See also Figure 4 In one embodiment, a method for using a display backlight assembly is provided, which realizes real-time adjustment of color temperature through a feedback circuit, a logic control unit and a current adjustment unit.

[0060] Step S101 : The power supply module 2 is used to provide a working current to the light emitting module 1 . Step S102: emitting light of different colors respectively through the multiple LED lights.

[0061] Step S103 , adjusting the operating current of the plurality of LED lamps through the control module 3 .

[0062] In a specific implementation, step S3 includes: The control module 3 obtains the light color information of multiple LED lights, and generates corresponding spectrum curves and light color parameters according to the spectrum data of the light color information; According to the spectrum curves and light color parameters of the multiple LED lamps, the distribution ratio of the working current provided by the power module 2 to the multiple LED lamps is adjusted.

[0063] Specifically, the control module 3 obtains the light color information of each LED light in real time through a feedback circuit or a sensor, etc. LED lights of different colors (such as red, green, blue, etc.) will be identified and recorded.

[0064] Based on the spectrum data of LED lights of different colors, the control module 3 generates a spectrum curve (describing the luminous intensity of each LED light at different wavelengths) and light color parameters (such as color temperature, color rendering index, etc.). These parameters help the system determine the light output characteristics of each LED light and ensure that the color and brightness of the light source meet expectations.

[0065] For further information, see Figure 5The control module 3 includes a feedback circuit, a logic control unit and a current regulating unit. The step 103 includes: S1031: Obtaining the operating current of the plurality of LED lamps through the feedback circuit.

[0066] The feedback circuit detects the actual current value consumed by each LED lamp through a sensor or a current detection circuit. These current data provide necessary input information for subsequent adjustments.

[0067] S1032: Calculate the current color temperature value according to the working current, the spectrum curve and the light color parameters through a logic control unit.

[0068] The logic control unit receives the operating current data obtained from the feedback circuit and performs calculations based on the spectrum curve and light color parameters. The spectrum curve describes the luminous intensity of each LED lamp at different wavelengths, while the light color parameters help describe the color temperature characteristics of the LED lamp. By combining these data, the logic control unit calculates the current color temperature value of the display, that is, the light color characteristics of the display.

[0069] S1033: Determine whether the color temperature value exceeds a preset target color temperature value, and if so, generate an adjustment signal.

[0070] If the current color temperature value exceeds or is lower than the target color temperature value, the control module 3 will determine that the current needs to be adjusted to restore the expected color temperature.

[0071] S1034: adjusting the distribution ratio of the working current provided by the power module 2 to the plurality of LED lamps according to the adjustment signal.

[0072] By adjusting the current ratio of different LED lamps, the power module 2 will redistribute the current to each LED lamp so that the light emission ratio of each LED lamp reaches the predetermined color temperature and brightness requirements.

[0073] In a specific implementation, the logic control unit further corrects the current ratio according to the working temperature change of the LED lamps after calculating the working current ratio of the plurality of LED lamps, specifically including: Based on the corresponding relationship between the temperature change of the LED lamp and the spectrum shift, the correction value of the current ratio of multiple LED lamps is determined. The current ratio of multiple LED lamps is adjusted in real time to compensate for the color temperature deviation caused by temperature change.

[0074] When LED lights are working, they generate heat, causing temperature changes. Temperature changes may affect the spectral characteristics of LED lights, especially for blue LED lights. Temperature increases may cause spectral shifts, causing the output blue light intensity to change, thus affecting the overall color temperature.

[0075] Temperature changes in LED lamps can cause changes in their luminous efficiency and spectral characteristics. Based on the spectral shift of LED lamps at different temperatures (i.e. the change in the emission intensity of different colors of light), the logic control unit can determine a correction value indicating the current ratio that needs to be adjusted.

[0076] The logic control unit will calculate and adjust the current ratio in real time according to the operating temperature of the LED lamp, ensuring that the LED lamp can still provide the required color temperature at different temperatures. This adjustment will be made dynamically when the temperature of the LED lamp changes, ensuring that the color temperature of the display is always stable.

[0077] The invention also discloses a display device for achieving efficient and stable display effects and meeting environmental adaptability requirements. By integrating the above-mentioned display backlight components, the display device achieves efficient color temperature adjustment, environmental adaptability brightness adjustment, and stable and reliable display effects. At the same time, its color temperature dynamic adjustment and temperature compensation functions meet diverse display needs and improve the applicability and performance stability of the display device.

[0078] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0080] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A display backlight assembly, characterized in that: include: The light-emitting module comprises a first LED lamp emitting red light, a second LED lamp emitting green light, and a third LED lamp emitting blue light; A power module, the power module provides working current for the light emitting module, and the plurality of LED lamps are connected in parallel to the power module; A control module, the control module is connected to the light emitting module and adjusts the working current of the plurality of LED lamps; The number of the light-emitting modules is multiple; The control module includes a first control interface, a second control interface and a third control interface; The first LED lamps of the plurality of light-emitting modules are all connected in parallel to the first control interface; The second LED lamps are all connected in parallel to the second control interface; The third LED lamps are all connected in parallel to the third control interface.

2. The display backlight assembly according to claim 1, characterized in that: The control module comprises: Feedback circuit, detecting the operating current of each LED lamp; A logic control unit, generating a current control signal according to a detection result of the feedback circuit; A current regulating unit is used to adjust the operating current of each LED lamp according to the current control signal.

3. The display backlight assembly according to claim 2, characterized in that: The logic control unit generates the current control signal according to the detection result of the feedback circuit and a preset spectrum curve and / or light color parameter.

4. The display backlight assembly according to claim 1, characterized in that: The surface of the first LED lamp is provided with red fluorescent glue; the surface of the second LED lamp is provided with green fluorescent glue; and the surface of the third LED lamp is not provided with fluorescent glue.

5. The display backlight assembly according to claim 1, characterized in that: The cathodes of the first LED lamp, the second LED lamp and the third LED lamp are connected to the corresponding first control interface, the second control interface and the third control interface respectively; Anodes of the first LED lamp, the second LED lamp and the third LED lamp are connected to the power module via a common power connection point.

6. A method for using a display backlight assembly, implemented by the display backlight assembly according to any one of claims 1 to 5, characterized in that: include: Providing working current to the light emitting module through the power supply module; The multiple LED lights emit light of different colors respectively; The operating current of the plurality of LED lamps is adjusted by the control module.

7. The method for using the display backlight assembly according to claim 6, characterized in that: Acquire light color information of multiple LED lights through the control module, and generate corresponding spectrum curves and light color parameters according to the spectrum data of the light color information; According to the spectrum curves and light color parameters of the multiple LED lamps, the distribution ratio of the working current provided by the power module to the multiple LED lamps is adjusted.

8. The method for using the display backlight assembly according to claim 7, characterized in that: The control module includes a feedback circuit, a logic control unit and a current regulating unit; Acquiring the operating current of the plurality of LED lamps through the feedback circuit; Calculating the current color temperature value according to the working current, the spectrum curve and the light color parameters by means of a logic control unit; Determining whether the color temperature value exceeds a preset target color temperature value, and if so, generating an adjustment signal; The distribution ratio of the working current provided by the power module to the multiple LED lamps is adjusted according to the adjustment signal.

9. A display device, characterized in that: A display backlight assembly comprising any one of claims 1-8.

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