Light-emitting module, manufacturing method thereof and vehicle-mounted signal lamp
By using millimeter-level light emitting devices and a light emitting module with uniform light layer structure in vehicle signal lights, the cost problem is solved, and the brightness uniformity and optical effect are improved, meeting the cost control requirements of the OEM.
Patent Information
- Application Number
- CN202510956383.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-11
- Publication Date
- 2025-09-02
AI Technical Summary
Among the existing pixelated interactive vehicle signal lights, the Mini Led luminous module and OLED display module have high composition costs, which is difficult to meet the cost control requirements of the OEM.
The light emitting module with a millimeter-level light emitting device and a uniform light layer structure is used to set a retaining wall and a uniform light layer on the mounting substrate, and the uniform light layer is used to adjust the light distribution, combined with the splicing method of the triangular substrate, reducing costs and improving brightness uniformity.
It has achieved the reduction of the production cost of vehicle signal lights, while improving the uniformity of brightness distribution and optical effect, meeting the cost control requirements of the OEM.
Smart Images
Figure CN120576346A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of vehicle-mounted signal lights, and in particular to a light-emitting module and a manufacturing method thereof, and a vehicle-mounted signal light. Background Art
[0002] With the development of vehicle technology, the shapes and lighting forms of car lights have become more diversified. Among them, pixelated interactive car signal lights are favored by more and more users. They have the advantages of novel forms and customizable lighting patterns.
[0003] Some pixelated interactive vehicle signal lights in related technologies are equipped with Mini LED light modules or OLED display modules, which makes them expensive and difficult to meet the cost control requirements of OEMs. Therefore, how to reduce the production cost of vehicle signal lights is a problem worth paying attention to. Summary of the Invention
[0004] The present application provides a light-emitting module and a manufacturing method thereof, and a vehicle-mounted signal light, aiming to reduce the manufacturing cost of the vehicle-mounted signal light.
[0005] The specific technical solutions are as follows: In a first aspect, an embodiment of the present application provides a light-emitting module for a vehicle signal light, wherein the light-emitting module includes a plurality of light-emitting units combined together, each of the light-emitting units including: Install the baseboard; A light-emitting device, wherein the light-emitting device is disposed on the mounting substrate and is a millimeter-scale light-emitting device; a retaining wall, the retaining wall being provided on the mounting substrate, the retaining wall defining an accommodation space, the light emitting device being located in the accommodation space; and A light-evening layer is provided on a side of the light-emitting device that is away from the mounting substrate.
[0006] The light-emitting module in the embodiments of the present application can be used in vehicle signal lights. The light-emitting devices in the light-emitting module use millimeter-scale light-emitting devices. Compared with the related art methods that use Mini LED light-emitting modules and OLED display modules, the production cost is lower, which can better meet the cost control requirements of the main engine manufacturer. In addition, each light-emitting unit is also provided with a light-leveling layer. The light-leveling layer is arranged on the side of the light-emitting device facing away from the mounting substrate. The light-leveling effect of the light-leveling layer can improve the uniformity of the brightness distribution of the light-emitting unit, thereby improving the optical effect of the vehicle signal light.
[0007] In some embodiments, the mounting substrate is a triangular substrate, the number of the light-emitting devices is three, and a figure formed by a line connecting the centers of the three light-emitting devices is a triangle.
[0008] The light-emitting unit utilizes a triangular mounting substrate, making it easy to connect multiple light-emitting units to form a variety of shapes. This allows for flexible shaping of the light-emitting module. Furthermore, based on the triangular mounting substrate, there are three light-emitting devices, and the line connecting the centers of the three light-emitting devices forms a triangle. This not only improves the brightness of the light-emitting unit, but also ensures that the three light-emitting devices are evenly distributed on the mounting substrate. Combined with the uniform light distribution of the uniformity layer, this further improves the uniformity of the light-emitting unit's brightness distribution.
[0009] In some embodiments, the mounting substrate is shaped like a first equilateral triangle, and the figure formed by the lines connecting the centers of the three light-emitting devices is a second equilateral triangle, and the sides of the second equilateral triangle are parallel to the corresponding sides of the first equilateral triangle.
[0010] The mounting substrate is shaped as a first equilateral triangle. When splicing multiple light-emitting units, any side of the mounting substrate can be selected for splicing without affecting the splicing effect, thus saving time and effort. Based on the mounting substrate's first equilateral triangle shape, the line connecting the centers of the three light-emitting devices forms a second equilateral triangle, with the sides of the second equilateral triangle parallel to the corresponding sides of the first equilateral triangle. This arrangement further improves the uniformity of the distribution of the three light-emitting devices on the mounting substrate, thereby further improving the uniformity of the brightness distribution of the light-emitting units.
[0011] In some embodiments, the side length of the second equilateral triangle is 1 / 2 of the side length of the first equilateral triangle.
[0012] When the above setting conditions are met, the uniformity of the brightness of the light-emitting units can be further improved.
[0013] In some embodiments, the light-emitting unit has a light-emitting surface, which is the surface of the light-emitting unit on the side away from the mounting substrate; the side length of the second equilateral triangle is L, and the distance from the top of the light-emitting device to the light-emitting surface is H, wherein 1 / 0.68≤L / H≤1 / 0.62.
[0014] If the ratio of L to H is too large, it means that the distance between two adjacent light-emitting devices in the horizontal direction is too large, and / or the distance between the light-emitting device and the light-emitting surface in the vertical direction is too small. In this case, the light emitted by each emitting device will reach the uniform light layer too concentratedly. Although the uniform light layer can make the light distribution uniform, it will still affect the uniformity of the overall brightness distribution of the light-emitting unit. In addition, the overall light-emitting angle of the light-emitting unit will also be relatively limited. If the ratio of L to H is too small, it means that the distance between two adjacent light-emitting devices in the horizontal direction is too small, and / or the distance between the light-emitting device and the light-emitting surface in the vertical direction is too large. In this case, the light emitted by the two light-emitting devices will form an overlapping area on the uniform light layer. The brightness of the overlapping area will be higher, which will also affect the uniformity of the overall brightness distribution of the light-emitting unit. When 1 / 0.68≤L / H≤1 / 0.62 is met, the uniformity of the overall brightness distribution of the light-emitting unit can reach an excellent level, and the overall light-emitting angle of the light-emitting unit can also be relatively ideal.
[0015] In some embodiments, the light-homogenizing layer includes a substrate layer and scattering structures dispersed within the substrate layer, wherein the refractive index of the scattering structures is different from that of the substrate layer. The scattering structures can adjust the distribution of light, thereby achieving a light-homogenizing effect.
[0016] In some embodiments, the base material layer is formed by solidifying glue; the light-evening layer is located in the accommodating space, and the light-evening layer is connected to the retaining wall; the light-emitting unit also includes a transparent adhesive layer, which is located between the light-evening layer and the mounting substrate and covers the light-emitting device, and the transparent adhesive layer is connected to the mounting substrate and the light-evening layer.
[0017] In this embodiment, the manufacturing process of the light-emitting unit can be as follows: a retaining wall is formed on the mounting substrate to surround the light-emitting device, and transparent glue covering the light-emitting device is injected into the accommodating space defined by the retaining wall, and a transparent glue layer is formed after the transparent glue is cured. Glue mixed with a scattering structure is then injected onto the transparent glue layer. During the curing process, the glue is supported by the transparent glue layer and limited by the retaining wall, so that the glue can maintain a fixed shape, and a uniform light layer is formed after it is completely cured. The light-emitting unit manufactured by the above process has a uniform light layer located in the accommodating space defined by the retaining wall and connected to the retaining wall. Therefore, the uniform light layer can be used to improve the uniformity of the brightness distribution of the light-emitting unit, and the structural stability of the light-emitting unit can also be improved.
[0018] In some embodiments, the base material layer is formed by solidifying glue; the light-evening layer is located in the accommodating space, and the light-evening layer is connected to the baffle wall; the light-emitting unit also includes a light-transmitting support plate, which is arranged on the side of the baffle wall away from the mounting substrate, and the light-transmitting support plate is connected to both the baffle wall and the light-evening layer.
[0019] In this embodiment, the manufacturing process of the light-emitting unit can be as follows: using a transparent support plate as the substrate, forming a baffle wall on the transparent support plate, injecting glue mixed with a scattering structure into the accommodation space defined by the baffle wall, and the glue being supported by the transparent support plate and limited by the baffle wall during the curing process, so that the glue can maintain a fixed shape. After complete curing, a uniform light layer is formed. The transparent support plate, the baffle wall, and the uniform light layer constitute a first component. A second component is provided, comprising a mounting substrate and a light-emitting device disposed on the mounting substrate. The first component and the second component are connected together (for example, by bonding), and the light-emitting device is positioned in the accommodation space. In the light-emitting unit manufactured by the above process, the uniform light layer is located in the accommodation space defined by the baffle wall and is connected to the baffle wall. Thus, the uniform light layer can be used to improve the uniformity of the brightness distribution of the light-emitting unit, while also improving the structural stability of the light-emitting unit.
[0020] In some embodiments, the light-evening layer is a light-evening film, which is located on the side of the retaining wall away from the mounting substrate. The light-emitting unit also includes a transparent adhesive layer, which is located between the light-evening layer and the mounting substrate and covers the light-emitting device. The transparent adhesive layer is connected to the mounting substrate and the light-evening layer.
[0021] In this embodiment, the manufacturing process of the light-emitting unit can be: forming a retaining wall around the light-emitting device on the mounting substrate, injecting transparent glue covering the light-emitting device into the accommodating space defined by the retaining wall, and forming a transparent glue layer after the transparent glue is cured. Then, a uniform light film is pasted on the lens glue layer and the retaining wall. The light-emitting unit manufactured by the above process has a uniform light film connected to the transparent glue layer and the retaining wall. Thus, the uniform light layer can be used to improve the uniformity of the brightness distribution of the light-emitting unit, and the structural stability of the light-emitting unit can also be improved. In addition, the lens glue layer can also provide support for the uniform light film, which can prevent the uniform light film from deforming, thereby helping to improve the light performance of the uniform light film.
[0022] In some embodiments, the light-emitting unit further includes a light-shielding layer, which is located on a side of the light-distributing layer away from the mounting substrate. The light-shielding layer and the retaining wall are arranged relative to each other along a first direction, and the first direction is perpendicular to the mounting substrate.
[0023] A shading layer is provided in the light-emitting unit, which is used to block the uniform light layer above the retaining wall. In this way, the size of the light-emitting surface of the light-emitting unit is consistent with the opening size of the accommodating space, which is more conducive to controlling the light-emitting angle of the light-emitting unit to ensure that the light-emitting angle of the light-emitting unit is closer to the designed angle.
[0024] In a second aspect, an embodiment of the present application provides a vehicle-mounted signal light comprising a plurality of light-emitting modules according to any one of the above embodiments.
[0025] In the vehicle signal lights of the embodiments of the present application, the light-emitting devices in the light-emitting modules are millimeter-scale light-emitting devices. Compared with the related art methods that use Mini LED light-emitting modules and OLED display modules, the production cost is lower, which can better meet the cost control requirements of the main engine manufacturer. In addition, each light-emitting unit is also provided with a light-leveling layer. The light-leveling layer is arranged on the side of the light-emitting device facing away from the mounting substrate. The light-leveling effect of the light-leveling layer can improve the uniformity of the brightness distribution of the light-emitting unit, thereby improving the optical effect of the vehicle signal light.
[0026] In a third aspect, an embodiment of the present application provides a method for manufacturing a light-emitting module, the method comprising: Producing a plurality of light-emitting units; Splice multiple light-emitting units together; The steps of making the light-emitting unit include: Providing a light-transmitting support plate; forming a retaining wall on the light-transmitting support plate, wherein the retaining wall defines an accommodating space; Injecting glue mixed with a scattering structure into the accommodation space defined by the retaining wall, and when the glue is cured, the glue forms a light-dotting layer, and the light-transmitting support plate, the retaining wall, and the light-dotting layer constitute a first component; providing a second assembly, the second assembly comprising a mounting substrate and a light emitting device disposed on the mounting substrate; The first component and the second component are connected together, and the light emitting device is placed in the accommodation space.
[0027] The light-emitting module fabricated by the method of manufacturing the light-emitting module in the embodiment of the present application has the advantages of low manufacturing cost and good uniformity of brightness of the light-emitting units. In addition, in the light-emitting unit fabricated by the above process, the light-dotting layer is located in the accommodation space defined by the retaining wall and is connected to the retaining wall. Thus, the light-dotting layer can be used to improve the uniformity of the brightness distribution of the light-emitting unit, and also improve the structural stability of the light-emitting unit. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1A schematic structural diagram of a light-emitting module provided in one embodiment of the present application; Figure 2 for Figure 1 Schematic diagram of the AA section; Figure 3 A schematic structural diagram of a light-emitting module provided in another embodiment of the present application; Figure 4 A schematic structural diagram of a light-emitting module provided in another embodiment of the present application; Figure 5 Schematic diagram of forming a retaining wall on a light-transmitting support plate in a method for manufacturing a light-emitting module according to an embodiment of the present application; Figure 6 Schematic diagram of forming a light-dotting layer in the method for manufacturing a light-emitting module according to an embodiment of the present application; Figure 7 This is a schematic diagram of a second component provided in the method for manufacturing a light-emitting module according to an embodiment of the present application; Figure 8 Schematic diagram of a light-emitting unit formed in the method for manufacturing a light-emitting module according to an embodiment of the present application.
[0029] The description of the reference numerals in the figures is as follows: 10. Light-emitting module; 100, light-emitting unit; 101, first component; 102, second component; 103, light-emitting surface; 110. Install the substrate; 120. Light-emitting device; 130. Retaining wall; 140, uniform light layer; 150, light-shielding layer; 160, light-transmitting support plate; 170. Transparent adhesive layer. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0031] In the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0033] In the description of this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.
[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.
[0035] With the development of vehicle technology, the shapes and lighting forms of car lights have become more diversified. Among them, pixelated interactive car signal lights are favored by more and more users. They have the advantages of novel forms and customizable lighting patterns.
[0036] Some pixelated interactive vehicle signal lights in related technologies are equipped with Mini LED light modules or OLED display modules, which makes them expensive and difficult to meet the cost control requirements of OEMs. Therefore, how to reduce the production cost of vehicle signal lights is a problem worth paying attention to.
[0037] Based on the above situation, the embodiments of the present application provide a light-emitting module and a manufacturing method thereof, and a vehicle signal light, aiming to reduce the manufacturing cost of the vehicle signal light.
[0038] like Figure 1 、 Figure 2As shown, the light-emitting module 10 provided in the embodiment of the first aspect of the present application includes a plurality of light-emitting units 100 combined together, each light-emitting unit 100 includes a mounting substrate 110, a light-emitting device 120, a retaining wall 130 and a light-uniforming layer 140, wherein the light-emitting device 120 is arranged on the mounting substrate 110, the light-emitting device 120 is a millimeter-level light-emitting device 120, the retaining wall 130 is arranged on the mounting substrate 110, the retaining wall 130 defines an accommodating space, the light-emitting device 120 is located in the accommodating space, and the light-uniforming layer 140 is arranged on the side of the light-emitting device 120 away from the mounting substrate 110.
[0039] Specifically, the mounting substrate 110 is a circuit board, which can be a hard PCB board or a flexible FPC board. The mounting substrate 110 not only provides a mounting base for the light-emitting device 120 , but also can provide power for the light-emitting device 120 .
[0040] The light emitting device 120 may be an LED (Light Emitting Diode). The light emitting device 120 is a millimeter-scale light emitting device 120 , which means that the size of the light emitting device 120 is greater than or equal to 1 mm.
[0041] The retaining wall 130 can be made of latex glue, and the light emitting device 120 is arranged in the accommodation space defined by the retaining wall 130. The light emitted by the light emitting device 120 can be reflected and diffused by the retaining wall 130, which is conducive to improving the overall brightness of the light emitting unit 100.
[0042] The light uniformity layer 140 is a film structure capable of adjusting light distribution to improve the uniformity of light distribution.
[0043] The light-emitting module 10 in the embodiment of the present application can be used for vehicle signal lights. The light-emitting device 120 in the light-emitting module 10 adopts a millimeter-level light-emitting device 120. Compared with the method of using Mini Led light-emitting module 10 and OLED display module in related technologies, the production cost is lower and can better meet the cost control requirements of the main engine manufacturer.
[0044] In addition, each light-emitting unit 100 is also provided with a light-evening layer 140, which is arranged on the side of the light-emitting device 120 away from the mounting substrate 110. Through the light-evening effect of the light-evening layer 140, the uniformity of the brightness distribution of the light-emitting unit 100 can be improved, thereby helping to improve the optical effect of the vehicle signal light.
[0045] It is understandable that vehicle signal lights can use light to form specific patterns while providing illumination, but the patterns do not need to be particularly fine. Therefore, vehicle signal lights do not need to have a high pixel count to meet user needs. After extensive testing and research, the applicant found that the use of millimeter-scale light-emitting devices 120 in the light-emitting unit 100 does not affect the actual user experience and can significantly reduce production costs.
[0046] In some embodiments, as Figure 1 As shown, the mounting substrate 110 is a triangular substrate, the number of the light emitting devices 120 is three, and the figure formed by the line connecting the centers of the three light emitting devices 120 is a triangle.
[0047] The light-emitting unit 100 adopts a triangular mounting substrate 110 , which makes it easy to splice a plurality of light-emitting units 100 to form various shapes. In this way, the light-emitting module 10 can be shaped more flexibly.
[0048] In addition, based on the mounting substrate 110 being a triangular substrate, the number of light-emitting devices 120 is three, and the figure formed by the lines connecting the centers of the three light-emitting devices 120 is a triangle. On the one hand, this can improve the brightness of the light-emitting unit 100, and on the other hand, it can also make the three light-emitting devices 120 evenly distributed on the mounting substrate 110. Combined with the uniform light effect of the uniform light layer 140, the uniformity of the brightness distribution of the light-emitting unit 100 can be further improved.
[0049] like Figure 1 As shown, in one embodiment, the shape of the mounting substrate 110 is constructed as a first equilateral triangle, and the figure formed by the lines connecting the centers of the three light-emitting devices 120 is a second equilateral triangle, and the sides of the second equilateral triangle are parallel to the corresponding sides of the first equilateral triangle.
[0050] The shape of the mounting substrate 110 is constructed as a first equilateral triangle. When splicing multiple light-emitting units 100, selecting any side of the mounting substrate 110 for splicing will not affect the splicing effect, so the splicing process can be more time-saving and labor-saving.
[0051] On the basis that the shape of the mounting substrate 110 is a first equilateral triangle, the figure formed by the lines connecting the centers of the three light-emitting devices 120 is a second equilateral triangle, and the sides of the second equilateral triangle are parallel to the corresponding sides of the first equilateral triangle. Such an arrangement can further improve the uniformity of the distribution of the three light-emitting devices 120 on the mounting substrate 110, thereby further improving the uniformity of the brightness distribution of the light-emitting unit 100.
[0052] like Figure 1As shown, in one embodiment, the side length of the second equilateral triangle is 1 / 2 of the side length of the first equilateral triangle. After testing and verification, it was found that when the above setting conditions are met, the uniformity of the brightness of the light emitting unit 100 can be further improved.
[0053] like Figure 1 、 Figure 2 As shown, in one embodiment, the light-emitting unit 100 has a light-emitting surface 103, which is the surface of the light-emitting unit 100 on the side away from the mounting substrate 110, the side length of the second equilateral triangle is L, and the distance from the top of the light-emitting device 120 to the light-emitting surface 103 is H, wherein 1 / 0.68≤L / H≤1 / 0.62.
[0054] If the ratio of L to H is too large, it means that the lateral distance between two adjacent light-emitting devices 120 is too large, and / or the longitudinal distance between the light-emitting device 120 and the light-emitting surface 103 is too small. In this case, the light emitted by each emitting device will reach the uniform light layer 140 too concentratedly. Although the uniform light layer 140 can make the light distribution uniform, it will still affect the overall brightness distribution uniformity of the light-emitting unit 100. In addition, the overall light output angle of the light-emitting unit 100 will also be relatively limited.
[0055] If the ratio of L to H is too small, it means that the lateral distance between the two adjacent light-emitting devices 120 is too small, and / or the longitudinal distance between the light-emitting device 120 and the light-emitting surface 103 is too large. In this case, the light emitted by the two light-emitting devices 120 will form an overlapping area on the uniform light layer 140, and the brightness of the overlapping area will be higher, which will also affect the overall brightness distribution uniformity of the light-emitting unit 100.
[0056] After extensive testing and research, the applicant found that when 1 / 0.68≤L / H≤1 / 0.62 is satisfied, the uniformity of the overall brightness distribution of the light-emitting unit 100 can reach an excellent level, and the overall light output angle of the light-emitting unit 100 can also be relatively ideal.
[0057] In a preferred embodiment, L / H=1 / 0.65. According to tests, the uniformity of the brightness distribution of the light-emitting unit 100 is optimal at this time.
[0058] In some embodiments, the light uniforming layer 140 includes a base material layer and scattering structures dispersed in the base material layer, and the refractive index of the scattering structures is not equal to the refractive index of the base material layer.
[0059] The scattering structure can be scattering particles, which can be spherical, ellipsoidal, or polyhedral in shape, and made of, for example, silicon nitride, silicon oxide, or silicon oxynitride, or a combination thereof. Alternatively, the scattering structure can be a nanofiber structure, which is a linear structure with a nanometer-scale diameter and a relatively long length.
[0060] The distribution of light can be adjusted through the scattering structure to achieve a uniform light effect.
[0061] like Figure 2 As shown, in one of the embodiments, the base material layer is formed by solidifying glue, the light-leveling layer 140 is located in the accommodating space, the light-leveling layer 140 is connected to the retaining wall 130, and the light-emitting unit 100 also includes a transparent adhesive layer 170, which is located between the light-leveling layer 140 and the mounting substrate 110 and covers the light-emitting device 120, and the transparent adhesive layer 170 is connected to the mounting substrate 110 and the light-leveling layer 140.
[0062] The base material layer is formed by curing glue, and the scattering structure is dispersed in the glue. When the light emitting unit 100 is manufactured, the light uniforming layer 140 can be manufactured by injecting glue.
[0063] In this embodiment, the manufacturing process of the light-emitting unit 100 may be as follows: forming a retaining wall 130 surrounding the light-emitting device 120 on the mounting substrate 110, injecting transparent glue covering the light-emitting device 120 into the accommodation space defined by the retaining wall 130, and allowing the transparent glue to cure to form a transparent glue layer 170. Glue mixed with a scattering structure is then injected onto the transparent glue layer 170. During the curing process, the glue is supported by the transparent glue layer 170 and limited by the retaining wall 130, allowing the glue to maintain a fixed shape. After complete curing, the light-uniform layer 140 is formed.
[0064] In the light-emitting unit 100 manufactured through the above process, the light-uniforming layer 140 is located in the accommodation space defined by the retaining wall 130 and is connected to the retaining wall 130. Therefore, the light-uniforming layer 140 can be used to improve the uniformity of the brightness distribution of the light-emitting unit 100, and at the same time, the structural stability of the light-emitting unit 100 can also be improved.
[0065] like Figure 3 As shown, in one of the embodiments, the base material layer is formed by solidifying glue, the light-evening layer 140 is located in the accommodating space, the light-evening layer 140 is connected to the baffle wall 130, and the light-emitting unit 100 also includes a light-transmitting support plate 160, which is arranged on the side of the baffle wall 130 away from the mounting substrate 110, and the light-transmitting support plate 160 is connected to the baffle wall 130 and the light-evening layer 140.
[0066] The base material layer is formed by curing glue, and the scattering structure is dispersed in the glue. When the light emitting unit 100 is manufactured, the light uniforming layer 140 can be manufactured by injecting glue.
[0067] In this embodiment, the manufacturing process of the light-emitting unit 100 may be as follows: using a transparent support plate 160 as a substrate, forming a retaining wall 130 on the transparent support plate 160, injecting glue mixed with a scattering structure into the accommodation space defined by the retaining wall 130, and maintaining a fixed shape during the curing process due to the support of the transparent support plate 160 and the limiting effect of the retaining wall 130. After complete curing, a uniform light layer 140 is formed. The transparent support plate 160, retaining wall 130, and uniform light layer 140 constitute a first component 101. A second component 102 is provided, comprising a mounting substrate 110 and a light-emitting device 120 disposed on the mounting substrate 110. The first component 101 and the second component 102 are connected together (e.g., by bonding), and the light-emitting device 120 is positioned in the accommodation space.
[0068] In the light-emitting unit 100 manufactured through the above process, the light-uniforming layer 140 is located in the accommodation space defined by the retaining wall 130 and is connected to the retaining wall 130. Therefore, the light-uniforming layer 140 can be used to improve the uniformity of the brightness distribution of the light-emitting unit 100, and at the same time, the structural stability of the light-emitting unit 100 can also be improved.
[0069] like Figure 4 As shown, in some embodiments, the light-evening layer 140 is a light-evening film, which is located on the side of the retaining wall 130 away from the mounting substrate 110. The light-emitting unit 100 also includes a transparent adhesive layer 170, which is located between the light-evening layer 140 and the mounting substrate 110 and covers the light-emitting device 120. The transparent adhesive layer 170 is connected to the mounting substrate 110 and the light-evening layer 140.
[0070] The light-homogenizing diaphragm is a diaphragm structure with a light-homogenizing effect.
[0071] In this embodiment, the manufacturing process of the light-emitting unit 100 may be as follows: forming a retaining wall 130 surrounding the light-emitting device 120 on the mounting substrate 110, injecting transparent glue covering the light-emitting device 120 into the accommodation space defined by the retaining wall 130, and allowing the transparent glue to solidify to form a transparent adhesive layer 170. Then, a light-distributing film is attached to the lens adhesive layer and the retaining wall 130.
[0072] In the light-emitting unit 100 manufactured through the above process, the light-homogenizing film is connected to the transparent adhesive layer 170 and the retaining wall 130. Thus, the light-homogenizing layer 140 can be used to improve the uniformity of the brightness distribution of the light-emitting unit 100, while also improving the structural stability of the light-emitting unit 100. Furthermore, the lens adhesive layer can provide support for the light-homogenizing film, thereby preventing deformation of the light-homogenizing film and thus improving its light performance.
[0073] like Figure 4 As shown, in one embodiment, the light-emitting unit 100 further includes a light-shielding layer 150, which is located on the side of the light-uniform layer 140 away from the mounting substrate 110, and the light-shielding layer 150 and the retaining wall 130 are arranged relative to each other along a first direction, and the first direction is perpendicular to the mounting substrate 110.
[0074] The light-shielding layer 150 can be made of either latex or black glue, as long as it can block light. The light-shielding layer 150 and the retaining wall 130 are disposed opposite each other along a first direction. This means that the light-shielding layer 150 is disposed at locations within the light-emitting unit 100 where retaining walls 130 are located, and is also not disposed at locations within the light-emitting unit 100 where retaining walls 130 are not located. In a preferred embodiment, the orthographic projection of the light-shielding layer 150 on the mounting substrate 110 coincides with the orthographic projection of the retaining wall 130 on the mounting substrate 110.
[0075] A light-shielding layer 150 is provided in the light-emitting unit 100, and the light-shielding layer 150 is used to block the light-distributing layer 140 above the retaining wall 130. In this way, the size of the light-emitting surface 103 of the light-emitting unit 100 is consistent with the opening size of the accommodating space, which is more conducive to controlling the light-emitting angle of the light-emitting unit 100 to ensure that the light-emitting angle of the light-emitting unit 100 is closer to the designed angle.
[0076] An embodiment of the second aspect of the present application provides a vehicle-mounted signal light, which includes a plurality of light-emitting modules 10 , and the light-emitting modules 10 are the light-emitting modules 10 in any of the embodiments of the first aspect described above.
[0077] In the vehicle signal light in the embodiment of the present application, the light-emitting device 120 in the light-emitting module 10 adopts a millimeter-level light-emitting device 120. Compared with the method of using the Mini Led light-emitting module 10 and the OLED display module in the related art, the production cost is lower and can better meet the cost control requirements of the main engine manufacturer.
[0078] In addition, each light-emitting unit 100 is also provided with a light-evening layer 140, which is arranged on the side of the light-emitting device 120 away from the mounting substrate 110. Through the light-evening effect of the light-evening layer 140, the uniformity of the brightness distribution of the light-emitting unit 100 can be improved, thereby helping to improve the optical effect of the vehicle signal light.
[0079] The embodiment of the third aspect of the present application provides a method for manufacturing a light-emitting module 10, the method comprising the following steps: Step S10, manufacturing a plurality of light-emitting units 100; Step S20: splice the multiple light-emitting units 100 together.
[0080] In step S10, the steps of manufacturing the light emitting unit 100 include: Step S11, providing a light-transmitting support plate 160; Step S12: forming a retaining wall 130 on the light-transmitting support plate 160, wherein the retaining wall 130 defines a receiving space (refer to Figure 5 ); Step S13, injecting glue mixed with scattering structure into the accommodation space defined by the retaining wall 130, when the glue is cured, the glue forms a light-dotting layer 140, and the transparent support plate 160, the retaining wall 130 and the light-dotting layer 140 constitute the first component 101 (refer to Figure 6 ); Step S14, providing a second assembly 102, the second assembly 102 includes a mounting substrate 110 and a light emitting device 120 disposed on the mounting substrate 110 (refer to Figure 7 ); Step S15: Connect the first component 101 and the second component 102 together, and place the light emitting device 120 in the receiving space (refer to Figure 8 ).
[0081] The method for manufacturing the light-emitting module 10 in the embodiment of the present application provides the light-emitting module 10 with the advantages of low manufacturing cost and good uniformity of the brightness of the light-emitting unit 100. Furthermore, in the light-emitting unit 100 manufactured through the above process, the light-dodging layer 140 is located in the accommodation space defined by the retaining wall 130 and is connected to the retaining wall 130. Thus, the light-dodging layer 140 can be used to improve the uniformity of the brightness distribution of the light-emitting unit 100, while also improving the structural stability of the light-emitting unit 100.
[0082] The above content is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.
Claims
1. A light-emitting module for a vehicle signal light, characterized in that: The light-emitting module includes a plurality of light-emitting units combined together, each of which includes: Install the baseboard; A light-emitting device, wherein the light-emitting device is disposed on the mounting substrate and is a millimeter-scale light-emitting device; a retaining wall, the retaining wall being provided on the mounting substrate, the retaining wall defining an accommodation space, the light emitting device being located in the accommodation space; and A light-evening layer is provided on a side of the light-emitting device that is away from the mounting substrate.
2. The light emitting module according to claim 1, wherein: The mounting substrate is a triangular substrate, the number of the light-emitting devices is three, and the figure formed by the line connecting the centers of the three light-emitting devices is a triangle.
3. The light emitting module according to claim 2, characterized in that: The mounting substrate is shaped like a first equilateral triangle, and a line connecting the centers of the three light-emitting devices forms a second equilateral triangle, with sides of the second equilateral triangle being parallel to corresponding sides of the first equilateral triangle.
4. The light emitting module according to claim 3, wherein: The side length of the second equilateral triangle is 1 / 2 of the side length of the first equilateral triangle.
5. The light emitting module according to claim 3, characterized in that: The light emitting unit has a light emitting surface, and the light emitting surface is a surface of the light emitting unit away from the mounting substrate; The side length of the second equilateral triangle is L, and the distance from the top of the light-emitting device to the light-emitting surface is H, wherein 1 / 0.68≤L / H≤1 / 0.
62.
6. The light emitting module according to any one of claims 1 to 5, characterized in that: The light uniforming layer includes a base material layer and scattering structures dispersed in the base material layer, and the refractive index of the scattering structures is not equal to the refractive index of the base material layer.
7. The light emitting module according to claim 6, characterized in that: The base material layer is formed by curing glue; The light dodging layer is located in the accommodating space, and the light dodging layer is connected to the retaining wall; The light-emitting unit further includes a transparent adhesive layer, which is located between the light-dodging layer and the mounting substrate and covers the light-emitting device. The transparent adhesive layer is connected to the mounting substrate and the light-dodging layer.
8. The light emitting module according to claim 6, wherein: The base material layer is formed by curing glue; The light dodging layer is located in the accommodating space, and the light dodging layer is connected to the retaining wall; The light-emitting unit further includes a light-transmitting support plate, which is arranged on a side of the baffle wall away from the mounting substrate, and is connected to both the baffle wall and the light-dodging layer.
9. The light emitting module according to any one of claims 1 to 5, characterized in that: The light-evening layer is a light-evening film, which is located on the side of the retaining wall away from the mounting substrate. The light-emitting unit also includes a transparent adhesive layer, which is located between the light-evening layer and the mounting substrate and covers the light-emitting device. The transparent adhesive layer is connected to the mounting substrate and the light-evening layer.
10. The light emitting module according to claim 9, characterized in that: The light emitting unit further includes a light shielding layer, which is located on a side of the light uniforming layer away from the mounting substrate. The light shielding layer and the retaining wall are arranged opposite to each other along a first direction, and the first direction is perpendicular to the mounting substrate.
11. A vehicle-mounted signal light, characterized in that: The light emitting module comprises a plurality of light emitting modules according to any one of claims 1 to 10.
12. A method for manufacturing a light emitting module, characterized in that: include: Producing a plurality of light-emitting units; Splice multiple light-emitting units together; The steps of making the light-emitting unit include: Providing a light-transmitting support plate; forming a retaining wall on the light-transmitting support plate, wherein the retaining wall defines an accommodating space; Injecting glue mixed with a scattering structure into the accommodation space defined by the retaining wall, and when the glue is cured, the glue forms a light-dotting layer, and the light-transmitting support plate, the retaining wall, and the light-dotting layer constitute a first component; providing a second assembly, the second assembly comprising a mounting substrate and a light emitting device disposed on the mounting substrate; The first component and the second component are connected together, and the light emitting device is placed in the accommodation space.