LED backlight source for micro display

Abstract

The present application provides a micro-display LED backlight source, including a substrate, an LED light group, and a plurality of reflective plates. The LED light group includes a plurality of LED lamp beads arranged in a ring shape on the substrate. When observed in the vertical direction, the direction away from the center of the substrate is defined as the first direction, and the plurality of LED light groups are arranged in a ring array along the first direction; a plurality of reflective plates are arranged on the substrate, and each reflective plate is arranged between each two adjacent LED light groups along the first direction. The LED backlight source for a micro-display provided above can effectively optimize the utilization rate of light through the design of the LED light group arranged in a ring shape. The ring-shaped arrangement of the LED light group can make the light cover the entire display panel more evenly, and the reflective plate can enhance the reflection and propagation effect of the light, and can ensure that the light can be irradiated onto the display panel more evenly.

Description

Technical Field

[0001] The present application relates to the field of LED backlight sources, and in particular to an LED backlight source for a micro display. Background Art

[0002] In modern electronic devices, micro LED backlights are widely used in various small display devices, such as smart watches, smart glasses, wearable devices, etc. These devices usually require high-brightness backlights to ensure clear and bright display effects. Traditional backlight technology has been able to achieve certain lighting effects, but with the increasing demand for high brightness and high efficiency, traditional technology can no longer fully meet market demand.

[0003] At present, common technical solutions for micro LED backlight sources include increasing the arrangement of LED lamp beads, using high-brightness LED chips or adding condensers to achieve higher lighting brightness. However, the traditional layout of densely arranged LED lamp beads may lead to uneven light reflection and unsatisfactory lighting effects, while condensers or high-brightness LEDs cannot effectively solve the problem of insufficient lighting brightness of micro devices. Therefore, it is necessary to further optimize the design of micro LED backlight sources to achieve higher lighting brightness. Utility Model Content

[0004] In view of this, it is necessary to provide a higher brightness LED micro backlight source to solve the above problems.

[0005] The embodiment of the present application provides an LED backlight source for a micro display, characterized in that it includes:

[0006] substrate;

[0007] An LED light group, comprising a plurality of LED lamp beads arranged in a ring shape on the substrate, and a direction away from the center of the substrate is defined as a first direction when viewed in a vertical direction, and the plurality of LED light groups are arranged in a ring array along the first direction;

[0008] A plurality of reflective plates are arranged on the substrate, and each of the reflective plates is arranged between each two adjacent LED light groups along a first direction to increase the reflection of light and enhance the lighting brightness.

[0009] In at least one embodiment of the present application, the plurality of reflective plates are arranged in a ring shape.

[0010] In at least one embodiment of the present application, when viewed in the horizontal direction, the plurality of reflective plates extend obliquely upward in the opposite direction to the first direction on one side close to the center of the substrate.

[0011] In at least one embodiment of the present application, an inclination angle of the reflective plate on a side close to the center of the substrate gradually increases along the first direction.

[0012] In at least one embodiment of the present application, in the LED lamp group, adjacent LED lamp beads are arranged at equal distances.

[0013] In at least one embodiment of the present application, the LED backlight source of the micro display further includes a heat dissipation fin, and the heat dissipation fin is arranged on a side of the substrate away from the LED light group.

[0014] In at least one embodiment of the present application, the heat dissipation fins extend outwardly along the first direction and are arranged in a circular array along the center of the substrate.

[0015] In at least one embodiment of the present application, the LED backlight source of the micro display also includes an LED control interface, which is arranged on the side of the substrate away from the LED light group, and a gap is formed between the end of the heat dissipation fin close to the center of the substrate and the control interface.

[0016] In at least one embodiment of the present application, the LED backlight source of the micro display further includes a heat absorption layer, which is disposed on the substrate and attached to the heat dissipation fins to absorb heat generated by the LED light group.

[0017] In at least one embodiment of the present application, the heat absorption layer is metal copper.

[0018] The LED backlight source of a micro display provided above can effectively optimize the utilization rate of light through the design of the LED light group arranged in a ring shape. The ring shape arrangement of the LED light group can make the light cover the entire display panel more evenly, and the reflector can enhance the reflection and propagation effect of the light, which can ensure that the light can be irradiated more evenly on the display panel. The ring shape arrangement of the LED light group and the setting of the reflector can ensure the uniform distribution of light on the display panel, reduce the loss of light in the propagation process, and thus improve the overall lighting effect and uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of an LED backlight source for a micro display in one embodiment of the present application.

[0020] Figure 2 for Figure 1 A top view of the LED backlight source for a micro display.

[0021] Figure 3 for Figure 1 A bottom view of the LED backlight source of a micro display.

[0022] Figure 4 for Figure 1 An enlarged front cross-sectional view of the LED backlight source of the micro display.

[0023] Main component symbols

[0024] 100. A LED backlight source for a micro display; 10. a substrate; 20. an LED lamp group; 21. LED lamp beads; 30. a reflector; 40. a heat sink fin; 50. an LED control interface; 60. a heat absorption layer. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0026] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0027] The embodiment of the present application provides an LED backlight source for a micro display, comprising:

[0028] substrate;

[0029] An LED light group, comprising a plurality of LED lamp beads arranged in a ring shape on the substrate, and a direction away from the center of the substrate is defined as a first direction when viewed in a vertical direction, and the plurality of LED light groups are arranged in a ring array along the first direction;

[0030] A plurality of reflective plates are arranged on the substrate, and each of the reflective plates is arranged between each two adjacent LED light groups along a first direction to increase the reflection of light and enhance the lighting brightness.

[0031] The LED backlight source of a micro display provided above can effectively optimize the utilization rate of light through the design of the LED light group arranged in a ring shape. The ring shape arrangement of the LED light group can make the light cover the entire display panel more evenly, and the reflector can enhance the reflection and propagation effect of the light, which can ensure that the light can be irradiated more evenly on the display panel. The ring shape arrangement of the LED light group and the setting of the reflector can ensure the uniform distribution of light on the display panel, reduce the loss of light in the propagation process, and thus improve the overall lighting effect and uniformity.

[0032] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0033] See also Figure 1-Figure 4 An embodiment of the present application provides a micro display LED backlight source 100, including a substrate 10, an LED light group 20, and a plurality of reflective plates 30.

[0034] The LED light group 20 includes a plurality of LED lamp beads 21 arranged in a ring shape on the substrate 10. When observed along the vertical direction, the direction away from the center of the substrate 10 is defined as the first direction, and the plurality of LED light groups 20 are arranged in a ring array along the first direction; a plurality of reflective plates 30 are arranged on the substrate 10, and each of the reflective plates 30 is arranged between each two adjacent LED light groups 20 along the first direction to increase the reflection of light and enhance the lighting brightness.

[0035] Specifically, the LED light group 20 arranged in a ring shape can ensure that light is evenly irradiated onto the display panel from all directions, so that the entire display area is evenly illuminated, avoiding uneven brightness and darkness, and improving the consistency and quality of the display effect. The LED light group 20 arranged in a ring shape can effectively cover the entire display panel, reduce light leakage and waste, so that light can be fully utilized, and improve the brightness and energy efficiency of the lighting effect. The LED light group 20 arranged in a ring shape can more effectively utilize space, making the entire backlight structure more compact, saving the volume and space of the device, and is conducive to the design and manufacture of micro display devices.

[0036] Furthermore, the setting of the reflector 30 can effectively increase the reflection of light, so that the light emitted from the LED light group 20 can be reflected more to the display panel, thereby enhancing the lighting brightness. The reflector 30 is arranged along the direction between the LED light groups 20, which can effectively guide the propagation path of the light, ensure that the light can be effectively utilized, avoid the loss and waste of light, and improve the uniformity and brightness of the lighting effect.

[0037] In summary, the design of the annularly arranged LED light group 20 can effectively optimize the utilization rate of light. The annular arrangement of the LED light group 20 can make the light cover the entire display panel more evenly, and the reflector 30 can enhance the reflection and propagation effect of the light, which can ensure that the light can be irradiated more evenly on the display panel. The annular arrangement of the LED light group 20 and the setting of the reflector 30 can ensure the uniform distribution of light on the display panel, reduce the loss of light during the propagation process, and thus improve the overall lighting effect and uniformity.

[0038] In a specific embodiment, the plurality of reflective plates 30 are arranged in a ring shape.

[0039] Specifically, the ring-shaped arrangement of the reflector 30 can increase the area of ​​the entire reflective surface, so that more light can be reflected. This can improve the utilization rate of light and enhance the lighting brightness. The ring-shaped layout of the reflector 30 can more effectively guide the light, so that more light can be reflected to the target area, and the reflection efficiency is improved. The ring-shaped arrangement of the reflector 30 can ensure that the light is evenly reflected from all directions to the display panel, achieving a more uniform lighting effect and avoiding uneven brightness.

[0040] Furthermore, the reflective plates 30 are arranged in a ring between each LED lamp group 20, which is equivalent to isolating the interference between different lamp groups. The reflective plates 30 on both sides of each LED lamp bead 21 can more fully guide and enhance the reflection of light, avoiding the situation where the light is blocked or absorbed by other LED lamp beads 21, thereby improving the reflection efficiency and lighting brightness. Since each LED lamp bead 21 has reflective plates 30 on both sides, the light will not be interfered or blocked by other LED lamp beads 21 during the propagation process, so the loss of light can be reduced, so that more light can be effectively used, and the overall lighting effect is improved.

[0041] Furthermore, the reflectors 30 on both sides of each LED lamp bead 21 can ensure that light is evenly reflected from all directions to the display panel, achieving a more uniform lighting effect, avoiding uneven brightness, and improving the consistency and quality of the display effect. Since each LED lamp bead 21 is supported by the reflectors 30 on both sides, light propagation is more stable and is not easily affected by external factors, thereby ensuring the stability of the lighting effect.

[0042] In summary, the reflective plates 30 arranged in a circular array can utilize light more effectively, improve reflection efficiency, reduce light loss, achieve uniform lighting and lighting stability, and are suitable for various micro display devices that require high-quality lighting.

[0043] In a specific embodiment, when viewed in the horizontal direction, the plurality of reflective plates 30 are located on one side close to the center of the substrate 10 and extend obliquely upward in the opposite direction to the first direction.

[0044] Specifically, the inward tilt of the reflector 30 can make the light more concentratedly reflected onto the display panel, making the illuminated area brighter. This focusing effect helps to improve the brightness and uniformity of the lighting. The inward tilt of the reflector 30 can reduce the loss of light during the propagation process, so that more light can be effectively used, and the energy efficiency of the lighting effect is improved. The inward tilt of the reflector 30 can ensure that the light is evenly reflected onto the display panel from all directions, achieving a more uniform lighting effect and avoiding uneven brightness. The light is more concentratedly reflected onto the target area, which can reduce the waste of energy in non-target areas, improve energy utilization efficiency, and thus save energy.

[0045] In a specific embodiment, the inclination angle of the reflective plate 30 on the side close to the center of the substrate 10 gradually increases along the first direction.

[0046] Specifically, the gradually increasing inclination angle of the reflecting plate on the side close to the center of the substrate 10 can accurately control the reflection angle of the light, so that the light can be more accurately focused on the display panel, improving the accuracy and uniformity of the lighting. As the inclination angle increases, the light will be more concentrated on the target area during the reflection process, thereby enhancing the reflection effect of the light and improving the brightness and uniformity of the lighting. The gradually increasing inclination angle can optimize the propagation path of the light on the reflecting plate 30, so that the light is more effectively reflected to the target area, reducing the loss and dispersion of the light. Furthermore, the design of a larger inclination angle of the reflecting plate 30 on the periphery can better cope with the angle changes in the process of light propagation, ensure that the reflection of each row of lamp beads is more uniform, and ensure the consistency of the lighting effect.

[0047] In a specific embodiment, in the LED lamp group 20, adjacent LED lamp beads 21 are arranged at equal distances.

[0048] Specifically, the equidistant ring arrangement of each LED lamp bead 21 can radiate light more evenly, thereby improving the uniformity of overall lighting.

[0049] In a specific embodiment, the LED backlight source of the micro display further includes a heat dissipation fin 40 , and the heat dissipation fin 40 is disposed on a side of the substrate 10 away from the LED light group 20 .

[0050] Specifically, the main function of the heat dissipation fins 40 is to help dissipate heat, quickly transfer the heat generated by the LED lamp group 20 to the surrounding environment, prevent the LED lamp group 20 from overheating, and improve the working efficiency and life of the LED lamp group 20. By arranging the heat dissipation fins 40 on the side away from the LED lamp group 20, it is possible to avoid the heat dissipation fins 40 blocking or interfering with the front of the LED lamp group 20, ensure that the LED lamp group 20 emits light normally, and prevent the LED lamp group 20 from being damaged due to overheating.

[0051] Furthermore, arranging the heat dissipation fins 40 on the side away from the LED lamp group 20 can ensure that the emitted heat will not affect the operation of the lamp beads for a second time. This design helps to maintain the stable working state of the LED lamp group 20, ensure the normal lighting of the LED lamp beads 21, and extend their service life.

[0052] In a specific embodiment, the heat dissipation fins 40 extend outwardly along the first direction and are arranged in a circular array along the center of the substrate 10 .

[0053] Specifically, the design of extending outward in the first direction ensures that the heat dissipation fins 40 and the LED lamp group 20 have the same arrangement, so that the generated heat can be better dissipated. Through the same arrangement as the LED lamp group 20, the heat dissipation fins 40 can more effectively contact the surrounding environment, thereby more effectively conducting heat and dissipating heat. This design ensures that the heat dissipation fins 40 can maximize the use of space, effectively dissipate heat, and prevent the LED lamp group 20 from overheating.

[0054] In a specific embodiment, the LED backlight source of the micro display also includes an LED control interface 50, which is arranged on the side of the substrate 10 away from the LED light group 20, and a gap is formed between the end of the heat dissipation fin 40 close to the center of the substrate 10 and the control interface.

[0055] Specifically, the heat sink 40 is usually used to dissipate heat, and conduct the heat generated by the LED lamp group 20 to the surrounding environment. However, if the heat sink 40 directly contacts the control interface, the heat may be conducted to the interface, affecting its normal operation. By leaving a gap, the conduction of heat can be effectively prevented, and the control interface can be protected from the influence of heat.

[0056] Furthermore, a reasonable design of the gap can ensure that there is enough space between the heat sink fins 40 and the control interface, so as not to interfere with each other, thereby improving the stability and reliability of the device. This can ensure that the LED backlight source can maintain a stable temperature and performance during long-term operation, thereby extending the service life of the device.

[0057] In a specific embodiment, the LED backlight source of the micro display further includes a heat absorption layer 60 , which is disposed on the substrate 10 and attached to the heat dissipation fins 40 to absorb the heat generated by the LED light group 20 .

[0058] Specifically, the main function of the heat absorption layer 60 is to absorb the heat generated by the LED light group 20 and prevent it from being conducted to other components or the surrounding environment. By arranging the heat absorption layer 60 on the substrate 10 and attaching it to the heat dissipation fins 40, the heat generated by the LED light group 20 can be effectively absorbed into the heat absorption layer 60 to prevent the heat from affecting other components. The heat absorption layer 60 is attached to the substrate 10, which can effectively conduct the heat generated by the LED light group 20 and evenly distribute it to the entire surface of the heat absorption layer 60. This helps to improve the heat conduction efficiency, avoid heat accumulation in a local area, and thus reduce the operating temperature of the LED light group 20.

[0059] Furthermore, the heat absorption layer 60 can have a larger area to fit the substrate 10, which speeds up the heat absorption of the LED lamp group 20. The heat absorption layer 60 fits the heat dissipation fins 40, which can dissipate heat through the heat dissipation fins 40 more quickly, effectively protecting other components on the substrate 10 from the heat generated by the LED lamp group 20 and extending its service life.

[0060] In one specific embodiment, the heat absorption layer 60 is made of metal copper.

[0061] Specifically, metallic copper is a material with good thermal conductivity and high thermal conductivity. Therefore, using copper as the material of the heat absorption layer 60 can effectively and quickly conduct the heat generated by the LED lamp group 20 to the surface of the heat absorption layer 60, thereby improving the heat conduction efficiency. Copper has good chemical stability and corrosion resistance, can maintain stability in high temperature and humid environments, and is not easily affected by the external environment. Therefore, as the material of the heat absorption layer 60, metallic copper can ensure long-term and stable absorption and conduction of the heat generated by the LED lamp group 20. Metallic copper has good plasticity and processability, and can be easily processed into heat absorption layers 60 of various shapes and sizes to meet the needs of different devices. The plasticity of this material helps to achieve good fit and contact between the heat absorption layer 60 and other components during the manufacturing process.

[0062] The above is only an implementation method of the present application. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present application, but these improvements are within the scope of protection of the present application.

Claims

1. A LED backlight source for a micro display, characterized in that: include: substrate; An LED light group, comprising a plurality of LED lamp beads arranged in a ring shape on the substrate, and a direction away from the center of the substrate is defined as a first direction when viewed in a vertical direction, and the plurality of LED light groups are arranged in a ring array along the first direction; A plurality of reflective plates are arranged on the substrate, and each of the reflective plates is arranged between each two adjacent LED light groups along a first direction to increase the reflection of light and enhance the lighting brightness.

2. The LED backlight source for a micro display according to claim 1, characterized in that: The plurality of reflective plates are arranged in a ring shape.

3. The LED backlight source for a micro display according to claim 2, characterized in that: When viewed in the horizontal direction, the plurality of reflective plates extend obliquely upward in the opposite direction to the first direction on one side close to the center of the substrate.

4. The LED backlight source for a micro display according to claim 3, characterized in that: The inclination angle of the reflector on the side close to the center of the substrate gradually increases along the first direction.

5. The LED backlight source for a micro display according to claim 1, characterized in that: In the LED lamp group, adjacent LED lamp beads are arranged at equal distances.

6. The LED backlight source for a micro display according to claim 1, characterized in that: The LED backlight source of the micro display further includes a heat dissipation fin, and the heat dissipation fin is arranged on a side of the substrate away from the LED light group.

7. The LED backlight source for a micro display according to claim 6, characterized in that: The heat dissipation fins extend outwardly along the first direction and are arranged in a circular array along the center of the substrate.

8. The LED backlight source for a micro display according to claim 7, characterized in that: The LED backlight source of the micro display also includes an LED control interface, which is arranged on a side of the substrate away from the LED light group, and a gap is formed between the end of the heat dissipation fin close to the center of the substrate and the control interface.

9. The LED backlight source for a micro display according to claim 6, characterized in that: The LED backlight source of the micro display further includes a heat absorption layer, which is disposed on the substrate and adheres to the heat dissipation fins to absorb the heat generated by the LED light group.

10. The LED backlight source for a micro display according to claim 9, characterized in that: The heat absorption layer is metal copper.

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