Backlight structure and vehicle-mounted display module

Abstract

The invention provides a backlight structure and a vehicle-mounted display module. In the backlight structure, a first metal plate and a second metal plate are detachably connected, a containing space is formed between the first metal plate and the second metal plate, and a light source assembly is arranged in the containing space; the sealing piece wraps the connecting position of the first metal plate and the second metal plate. According to the backlight structure, the overall framework of the backlight structure is formed by assembling the first metal plate and the second metal plate, namely, the framework of the upper metal plate and the lower metal plate, compared with the framework of the bottom metal plate and the middle rubber frame in the prior art, the part of the middle rubber frame is removed, and the backlight framework is formed by assembling the two metal plates; according to the vehicle-mounted display module assembly, the thickness limitation of parts can be eliminated, and the frame thickness of the whole framework can be reduced according to requirements, so that a backlight structure with a narrower frame is designed, and the frame of the vehicle-mounted display module assembly is narrower; meanwhile, the first metal plate and the second metal plate are detachably connected, and convenience is provided for disassembling and assembling the backlight structure.

Description

Technical Field

[0001] The present invention relates to the technical field of backlight structures, and in particular to a backlight structure and a vehicle-mounted display module. Background Art

[0002] The backlight structure in an automotive display module is a crucial display component. Driven by the pursuit of narrow-bezel display effects and versatility, the industry is pursuing designs with even narrower display bezels. Existing technology often employs a "base sheet metal + middle plastic frame" architecture, where the overall structure allows. However, because the plastic frame is injection molded and has thickness limitations, reducing the overall bezel thickness in existing backlight structures is difficult, significantly reducing product versatility and hindering customers' pursuit of narrow bezels. Summary of the Invention

[0003] The present invention provides a backlight structure and a vehicle-mounted display module to solve the problem that the frame of the overall structure of the existing backlight structure is difficult to reduce, which will greatly reduce the versatility of the product and affect customers' pursuit of narrow frame.

[0004] A backlight structure includes a first sheet metal, a second sheet metal, a light source assembly, and a sealing member; The first sheet metal and the second sheet metal are detachably connected to form an accommodating space therebetween, and the light source assembly is disposed in the accommodating space; The sealing member wraps a connection position between the first sheet metal and the second sheet metal.

[0005] Preferably, the first sheet metal includes a first main board and a first supporting wall extending from the periphery of the first main board along a first direction; The second sheet metal includes a second main board and a second supporting wall extending from the periphery of the second main board along a second direction; The first main board and the second main board are arranged parallel to each other, the first direction and the second direction are opposite to each other, and the first supporting wall is located on the inner side or the outer side of the second supporting wall; The first supporting wall and the second supporting wall are detachably connected.

[0006] Preferably, the first supporting wall includes at least two connecting walls; at least two of the connecting walls are distributed in an annular shape; A weight-reducing avoidance groove is provided on a portion of each connecting wall located at a corner.

[0007] Preferably, any one of the first sheet metal and the second sheet metal is provided with a card slot, and the other is provided with a card protrusion, and the card protrusion is engaged with the card slot; Alternatively, either one of the first sheet metal and the second sheet metal is provided with a first adhesive, and the other is provided with a second adhesive, and the first adhesive is in contact with the second adhesive; Alternatively, either one of the first sheet metal and the second sheet metal is provided with a first magnetic member, and the other is provided with a second magnetic member, and the first magnetic member is connected to the second magnetic member; Alternatively, either one of the first sheet metal and the second sheet metal is provided with a first connecting hole, and the other is provided with a second connecting hole, and a fastener is passed through the first connecting hole and the second connecting hole.

[0008] Preferably, in the light emitting direction of the light source assembly, the height of the protrusion is ≥1.5 mm; In a direction perpendicular to the light emitting direction of the light source assembly, the width of the protrusion is ≥0.3 mm.

[0009] Preferably, a guide structure is provided at one end of the latch protrusion close to the mainboard, and the angle between the plane where the guide structure is located and the plane where the light emitting direction of the light source assembly is located is 15°-45°.

[0010] Preferably, the light source assembly includes an LED light bar and a light path control layer; The LED light strip is fixed to a side wall of the second sheet metal through a connecting piece; The light path regulating layer is mounted on the inner bottom wall of the second sheet metal and is arranged corresponding to the LED light strip; A display window is provided on the first sheet metal, and the display window is used to reveal the light path regulating layer.

[0011] A vehicle-mounted display module, comprising a cover glass, a FOG module and the backlight structure; The cover glass and the first sheet metal of the backlight structure are connected via a first adhesive layer; The FOG module is mounted on the cover glass via a second adhesive layer and is arranged corresponding to the light source assembly of the backlight structure.

[0012] Preferably, the vehicle-mounted display module further includes a buffer layer, and the buffer layer is arranged between the FOG module and the first sheet metal.

[0013] Preferably, the vehicle-mounted display module further includes a first FPC and a second FPC; The first end of the first FPC is inserted into the accommodating space of the backlight structure and connected to the light source assembly of the backlight structure, and a first gap exists between the second end of the first FPC and the backlight structure; The second FPC wraps the backlight structure, a first end of the second FPC is connected to the FOG module, and a second gap exists between the second end of the second FPC and the backlight structure.

[0014] In an embodiment of the present invention, the overall architecture of the backlight structure is assembled using two sheet metal parts, a first sheet metal and a second sheet metal. It can be said to be an "upper sheet metal + lower sheet metal" architecture. Compared with the "bottom sheet metal + middle plastic frame" architecture in the prior art, the middle plastic frame is removed. The backlight architecture is replaced with two sheet metal parts, which can eliminate the thickness restrictions of the components. The frame thickness of the overall architecture can be reduced as needed, thereby designing a backlight structure with a narrower frame, thereby making the frame of the vehicle-mounted display module assembly narrower. At the same time, the first sheet metal and the second sheet metal are detachably connected, providing convenience for disassembly and assembly of the backlight structure. The narrow-frame backlight structure can enhance user aesthetics, increase screen-to-body ratio, and improve customer satisfaction. At the same time, it can make the developed display module more versatile, achieve the goal of significantly reducing costs, and thus enhance overall competitiveness. A sealing member is wrapped around the connection position of the first sheet metal and the second sheet metal. Specifically, the sealing member is an edging tape. The edging tape includes a first part and a second part extending from a side edge of the first part in a direction perpendicular to the first part. The first part is wrapped around the first sheet metal and the second part is wrapped around the second sheet metal, or the second part is wrapped around the first sheet metal and the first part is wrapped around the second sheet metal. The first sheet metal and the second sheet metal can be pasted and fixed to prevent water vapor from entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 is a first isometric view of a vehicle-mounted display module according to an embodiment of the present invention; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 is a cross-sectional view of a vehicle-mounted display module in a cutaway state according to one embodiment of the present invention; Figure 4 yes Figure 3 Enlarged view of point B in the middle; Figure 5 is an isometric view of a cutaway state of an on-board display module according to one embodiment of the present invention; Figure 6 yes Figure 5 Enlarged view of point C in the middle; Figure 7 2 is a second isometric view of a vehicle-mounted display module according to an embodiment of the present invention.

[0017] Among them, 1. First sheet metal; 101. First main board; 102. First support wall; 1021. Connecting wall; 1022. Weight reduction avoidance groove; 103. Display window; 2. Second sheet metal; 201. Second main board; 202. Second support wall; 3. Light source assembly; 31. LED light bar; 32. Light path control layer; 321. Reflector; 322. Light guide plate; 323. Diffuser; 33. Connector; 34. Brightness enhancement layer; 35. Function enhancement layer; 4. Seal; 5. Card slot; 6. Card protrusion; 7. Guide structure; 8. Cover glass; 9. FOG module; 10. First adhesive layer; 11. Second adhesive layer; 12. Buffer layer; 13. First FPC; 14. Second FPC; 15. FPC reinforcement plug handle; 16. Backlight logo; 17. Positioning column; 18. Connecting column. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects solved by this application more clearly understood, this 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.

[0019] In the description of this application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting this application. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0021] The embodiment of the present invention provides a backlight structure, referring to Figure 1-Figure 7 , including a first sheet metal 1, a second sheet metal 2, a light source assembly 3 and a sealing member 4; the first sheet metal 1 and the second sheet metal 2 are detachably connected, forming an accommodating space therebetween, and the light source assembly 3 is arranged in the accommodating space; the sealing member 4 wraps the connection position of the first sheet metal 1 and the second sheet metal 2.

[0022] As an example, the backlight structure can be but is not limited to being used in a vehicle-mounted display module, and mainly includes a first sheet metal 1, a second sheet metal 2, a light source assembly 3 and a seal 4; during installation, the first sheet metal 1 and the second sheet metal 2 are detachably connected, forming an accommodation space therebetween, and the light source assembly 3 is arranged in the accommodation space; in this way, the overall structure of the backlight structure is assembled using two sheet metal parts, the first sheet metal 1 and the second sheet metal 2, which can be said to be an "upper sheet metal + lower sheet metal" structure. Compared with the "bottom sheet metal + middle rubber frame" structure in the prior art, the middle rubber frame is removed, and the backlight structure is replaced by two sheet metal parts. The thickness limit of the components can be eliminated, and the frame thickness of the overall structure can be reduced as needed, thereby designing a backlight structure with a narrower frame, thereby making the vehicle-mounted display module assembly frame narrower; at the same time, the first sheet metal 1 and the second sheet metal 2 are detachably connected, which provides convenience for disassembly and assembly of the backlight structure. The narrow-frame backlight structure can enhance user aesthetics, increase screen-to-body ratio, and improve customer satisfaction. It can also make the developed display module more versatile, significantly reducing costs and thus improving overall competitiveness. A sealant 4 is wrapped around the connection between the first sheet metal 1 and the second sheet metal 2. Specifically, the sealant 4 is an edge tape (thickness ≤ 0.06mm). The edge tape includes a first portion and a second portion extending from a side edge of the first portion in a direction perpendicular to the first portion. The first portion is wrapped around the first sheet metal 1 and the second portion is wrapped around the second sheet metal 2, or the second portion is wrapped around the first sheet metal 1 and the first portion is wrapped around the second sheet metal 2. This can be used to adhere the first and second sheet metals 1, 2, and prevent the ingress of water vapor.

[0023] The thickness of the first sheet metal 1 and the second sheet metal 2 can be adjusted based on actual strength requirements and excess strength. For a 10.2-inch display module, for example, 0.3mm thick sheet metal can be used for the first sheet metal 1 and 1.0mm for the second sheet metal 2. Compared to the "base sheet metal + middle plastic frame" architecture, with the same internal structural clearance, the frame thickness is reduced by over 0.3mm. This significantly reduces the backlight frame thickness, resulting in a narrower frame for the vehicle display module assembly. This not only improves user aesthetics and customer satisfaction, but also makes the developed display module more versatile, significantly reducing costs and ultimately enhancing overall competitiveness.

[0024] In one embodiment, referring to Figure 4 and Figure 6The first sheet metal 1 includes a first main board 101 and a first support wall 102 extending from the periphery of the first main board 101 along a first direction; the second sheet metal 2 includes a second main board 201 and a second support wall 202 extending from the periphery of the second main board 201 along a second direction; the first main board 101 and the second main board 201 are arranged parallel to each other, the first direction and the second direction are opposite directions, and the first support wall 102 is located on the inner side or the outer side of the second support wall 202; the first support wall 102 and the second support wall 202 are detachably connected.

[0025] The first direction and the second direction are two opposite directions. The second direction is the light emitting direction of the backlight structure, and the first direction is the opposite direction of the light emitting direction of the backlight structure.

[0026] As an example, the first sheet metal 1 includes a first main board 101 and a first supporting wall 102, and the first supporting wall 102 is a component extending from the periphery of the first main board 101 along the first direction; the second sheet metal 2 includes a second main board 201 and a second supporting wall 202, and the second supporting wall 202 is a component extending from the periphery of the second main board 201 along the second direction; when installing, the first main board 101 and the second main board 201 are arranged parallel to each other, and the first supporting wall 102 is located on the inner side or the outer side of the second supporting wall 202, and the first supporting wall 102 and the second supporting wall 202 are detachably connected; in this way, the first supporting wall 102 and the second supporting wall 202 are in contact with each other, and can be To reduce the thickness of the frame of the overall backlight structure; the overall structure of the backlight structure is assembled from two sheet metal parts, a first sheet metal 1 and a second sheet metal 2, which can be said to be an "upper sheet metal + lower sheet metal" structure. Compared with the "bottom sheet metal + middle plastic frame" structure in the prior art, the middle plastic frame is removed, and the thickness limit of the components is eliminated by assembling two sheet metal parts into a backlight structure. The frame thickness of the overall structure can be reduced as needed, thereby designing a backlight structure with a narrower frame, thereby making the frame of the vehicle-mounted display module assembly narrower; at the same time, the first support wall 102 and the second support wall 202 are detachably connected, providing convenience for disassembly and assembly of the backlight structure. The narrow-frame backlight structure can enhance user aesthetics, increase screen-to-body ratio, and improve customer satisfaction. At the same time, it can make the developed display module more versatile, achieve the goal of significantly reducing costs, and thus enhance overall competitiveness.

[0027] In one embodiment, referring to Figure 1 The first supporting wall 102 includes at least two connecting walls 1021 ; the at least two connecting walls 1021 are distributed in a ring shape; a weight-reducing avoidance groove 1022 is provided at a corner portion of each connecting wall 1021 .

[0028] As an example, the first support wall 102 includes at least two connecting walls 1021, at least two of which are arranged in an annular pattern. The number of connecting walls 1021 can be selected based on actual needs, for example, two or more. When there are two connecting walls 1021, the two connecting walls 1021 are arranged in an annular pattern and are disposed opposite each other. The two connecting walls 1021 are respectively fitted and snapped onto two opposite side surfaces of the second support wall 202. This can reduce the material used for the first support wall 102 and also reduce the thickness of part of the frame of the overall backlight structure, thereby designing a backlight structure with a narrower frame. When there are four connecting walls 1021, the four connecting walls 1021 are arranged in an annular pattern. The four connecting walls 1021 are respectively fitted and snapped onto the four side surfaces of the second support wall 202, thereby reducing the thickness of the frame of the overall backlight structure. In addition, a weight-reducing avoidance groove 1022 is provided at the corner portion of each connecting wall 1021, which can reduce the thickness of the corner where the first sheet metal 1 and the second sheet metal 2 meet, thereby meeting the design requirement of reducing the thickness of the frame of the overall structure of the backlight structure. At the same time, it can also reduce the material used in the first sheet metal 1 and reduce costs.

[0029] In one embodiment, referring to Figure 2 、 Figure 4 and Figure 6 Either one of the first sheet metal 1 and the second sheet metal 2 is provided with a card slot 5, and the other is provided with a card protrusion 6, and the card protrusion 6 is engaged with the card slot 5; or, either one of the first sheet metal 1 and the second sheet metal 2 is provided with a first adhesive, and the other is provided with a second adhesive, and the first adhesive is connected to the second adhesive; or, either one of the first sheet metal 1 and the second sheet metal 2 is provided with a first magnetic component, and the other is provided with a second magnetic component, and the first magnetic component is connected to the second magnetic component; or, either one of the first sheet metal 1 and the second sheet metal 2 is provided with a first connecting hole, and the other is provided with a second connecting hole, and a fastener is passed through the first connecting hole and the second connecting hole.

[0030] As an example, a detachable connection method between the first sheet metal 1 and the second sheet metal 2 is introduced; in the first connection method, either one of the first sheet metal 1 and the second sheet metal 2 is provided with a card slot 5, and the other is provided with a card protrusion 6. Specifically, either one of the first support wall 102 and the second support wall 202 is provided with a card slot 5, and the other is provided with a card protrusion 6. During installation, the card protrusion 6 is engaged with the card slot 5, so that the first sheet metal 1 and the second sheet metal 2 can be assembled together, which provides convenience for disassembly and assembly of the first sheet metal 1 and the second sheet metal 2; at the same time, the first support wall 102 and the second support wall 202 are fitted together, which can reduce the frame thickness of the overall architecture of the backlight structure.

[0031] The second connection method: either one of the first sheet metal 1 and the second sheet metal 2 is provided with a first adhesive, and the other is provided with a second adhesive. Specifically, either one of the first support wall 102 and the second support wall 202 is provided with a first adhesive, and the other is provided with a second adhesive. During installation, the first adhesive is connected to the second adhesive, so that the first sheet metal 1 and the second sheet metal 2 can be assembled together, which provides convenience for disassembly and assembly of the first sheet metal 1 and the second sheet metal 2; at the same time, the first support wall 102 and the second support wall 202 are fitted together, which can reduce the frame thickness of the overall architecture of the backlight structure.

[0032] Third connection mode: either one of the first sheet metal 1 and the second sheet metal 2 is provided with a first magnetic member, and the other is provided with a second magnetic member. Specifically, either one of the first support wall 102 and the second support wall 202 is provided with a first magnetic member, and the other is provided with a second magnetic member. During installation, the first magnetic member is connected to the second magnetic member to achieve assembly of the first sheet metal 1 and the second sheet metal 2, thereby facilitating assembly and disassembly of the first sheet metal 1 and the second sheet metal 2. At the same time, the first support wall 102 and the second support wall 202 are closely connected, which can reduce the frame thickness of the overall structure of the backlight structure. The fourth connection method: either one of the first sheet metal 1 and the second sheet metal 2 is provided with a first connection hole, and the other is provided with a second connection hole. Specifically, either one of the first support wall 102 and the second support wall 202 is provided with a first connection hole, and the other is provided with a second connection hole. During installation, fasteners are passed through the first connection hole and the second connection hole to assemble the first sheet metal 1 and the second sheet metal 2 together, thereby facilitating the disassembly and assembly of the first sheet metal 1 and the second sheet metal 2. At the same time, the first support wall 102 and the second support wall 202 are fitted together to reduce the frame thickness of the overall structure of the backlight structure.

[0033] In one embodiment, referring to Figure 4 and Figure 6 In the light emitting direction of the light source assembly 3 , the height of the card protrusion 6 is ≥1.5 mm; in the light emitting direction perpendicular to the light source assembly 3 , the width of the card protrusion 6 is ≥0.3 mm.

[0034] As an example, designing the size of the latch 6 according to actual needs can facilitate the latching connection between the latch slot 5 and the latch 6. During the design, in the light-emitting direction of the light source assembly 3, the height of the latch 6 is ≥1.5mm; in the light-emitting direction perpendicular to the light source assembly 3, the width of the latch 6 is ≥0.3mm. This configuration makes the latch 6 compatible with the size of the latch slot 5, facilitating the disassembly and assembly of the first sheet metal 1 and the second sheet metal 2. In addition, the backlight structure has at least three side surfaces, and one or more latch 6 is provided on the same side surface. When there are multiple latch 6s, the distance between two adjacent latch 6s is 30mm-100mm. This ensures a more secure and stable connection between the first sheet metal 1 and the second sheet metal 2, avoiding connection failure.

[0035] In one embodiment, referring to Figure 2 、 Figure 4 and Figure 6 A guide structure 7 is provided at one end of the protrusion 6 close to the mainboard, and the angle between the plane where the guide structure 7 is located and the plane where the light emitting direction of the light source assembly 3 is located is 15°-45°.

[0036] As an example, a guide structure 7 is provided at the end of the latch 6 close to the mainboard. The guide structure 7 is specifically chamfered, and the angle between the plane where the guide structure 7 is located and the plane where the light emitting direction of the light source assembly 3 is located is 15°-45°. This arrangement provides a guide for the connection between the latch 6 and the slot 5, making it convenient to connect the sheet metal part with the slot 5 to the sheet metal part with the latch 6, thereby providing convenience for the disassembly and assembly of the first sheet metal 1 and the second sheet metal 2.

[0037] In one embodiment, referring to Figure 4 and Figure 6 The light source assembly 3 includes an LED light bar 31 and a light path control layer 32; the LED light bar 31 is fixed to a side wall of the second sheet metal 2 through a connecting member 33; the light path control layer 32 is installed on the inner bottom wall of the second sheet metal 2 and is arranged corresponding to the LED light bar 31; a display window 103 is provided on the first sheet metal 1, and the display window 103 is used to reveal the light path control layer 32.

[0038] As an example, the light source assembly 3 includes an LED light strip 31 and a light path control layer 32; during installation, the LED light strip 31 is fixed to a side wall of the second support wall 202 through a connecting member 33 (such as an LED light strip fixing tape), and then the light path control layer 32 is installed on the second main board 201 and arranged corresponding to the LED light strip 31, and a display window 103 is provided on the first sheet metal 1; in this way, the light emitted by the LED light strip 31 is irradiated to the light path control layer 32, and the light path control layer 32 includes a reflective sheet 321, a light guide plate 322 and a diffuser 323 stacked in sequence. Through the cooperation of the reflective sheet 321, the light guide plate 322 and the diffuser 323, the light irradiated to the light path control layer 32 can be exposed from the display window 103 and finally irradiated onto the cover glass 8 of the vehicle-mounted display module. In addition, the light source assembly 3 also includes at least one of a brightness enhancement layer 34 (for example, a brightness enhancement sheet, there are two brightness enhancement sheets, and the two brightness enhancement sheets are stacked) and a function enhancement layer 35 (for example, an anti-peep film); when installed, the brightness enhancement layer 34 is stacked on the light path regulation layer 32, which can improve light utilization and increase display brightness by selectively reflecting the light of the backlight system; stacking the function enhancement layer 35 on the light path regulation layer 32 or the brightness enhancement layer 34 can prevent light loss.

[0039] The embodiment of the present invention provides a vehicle-mounted display module, referring to Figure 1-Figure 7, including cover glass 8, FOG module 9 and backlight structure; the cover glass 8 and the first sheet metal 1 of the backlight structure are connected by a first adhesive layer 10; the FOG module 9 is installed on the cover glass 8 through a second adhesive layer 11, and is arranged corresponding to the light source component 3 of the backlight structure.

[0040] Among them, the FOG module 9 is a flexible circuit board connector used to connect the flexible circuit board to the cover glass 8; FOG (Film On Glass) means the process of pressing the flexible circuit board (FPC) onto the liquid crystal glass, which can achieve electrical conduction between the driver IC and the cover glass 8.

[0041] As an example, the vehicle-mounted display module includes a cover glass 8, a FOG module 9 and a backlight structure; the backlight structure includes a first sheet metal 1, a second sheet metal 2, a light source assembly 3 and a seal 4; during installation, the first sheet metal 1 and the second sheet metal 2 are detachably connected to form an accommodation space, and the light source assembly 3 is arranged in the accommodation space; in this way, the overall structure of the backlight structure is assembled by two sheet metal parts, the first sheet metal 1 and the second sheet metal 2, which can be said to be an "upper sheet metal + lower sheet metal" structure. Compared with the "bottom sheet metal + middle plastic frame" structure in the prior art, the middle plastic frame is removed, and the backlight structure is assembled with two sheet metal parts, which can cancel the thickness limit of the components. The frame thickness of the overall structure can be reduced as needed, thereby designing a backlight structure with a narrower frame, and then making the vehicle-mounted display module assembly frame narrower; at the same time, the first sheet metal 1 and the second sheet metal 2 are detachably connected, which provides convenience for disassembly and assembly of the backlight structure. The narrow-frame backlight structure can enhance user aesthetics, increase screen-to-body ratio, and improve customer satisfaction. It can also make the developed display module more versatile, significantly reducing costs and thus improving overall competitiveness. A sealant 4 is wrapped around the connection between the first sheet metal 1 and the second sheet metal 2. Specifically, the sealant 4 is an edge tape (thickness ≤ 0.06mm). The edge tape includes a first portion and a second portion extending from a side edge of the first portion in a direction perpendicular to the first portion. The first portion is wrapped around the first sheet metal 1 and the second portion is wrapped around the second sheet metal 2, or the second portion is wrapped around the first sheet metal 1 and the first portion is wrapped around the second sheet metal 2. This can be used to adhere the first and second sheet metals 1, 2, and prevent the ingress of water vapor.

[0042] During installation, the FOG module 9 is mounted on the cover glass 8 via the second adhesive layer 11 and positioned corresponding to the light source assembly 3 of the backlight structure. Specifically, the FOG module 9 is bonded to the cover glass 8 via optically transparent adhesive. The optically transparent adhesive has the characteristics of high light transmittance, low haze, and good weather resistance, which can ensure the optical performance between the cover glass 8 and the FOG module 9. The first and second surfaces of the FOG module 9 are both provided with polarizers to prevent polarization of light passing through the FOG module 9. The cover glass 8 and the first sheet metal 1 of the backlight structure are then connected via the first adhesive layer 10. Specifically, the cover glass 8 and the first sheet metal 1 are bonded and fixed with glue using a dispensing process. At the same time, the FOG module 9 and the first sheet metal 1 are also bonded and fixed with glue using a dispensing process to achieve the required bonding strength. The first adhesive layer 10 and the second adhesive layer 11 can also be made of double-sided tape.

[0043] In one embodiment, referring to Figure 4 and Figure 6 The vehicle display module further includes a buffer layer 12 , which is disposed between the FOG module 9 and the first sheet metal 1 .

[0044] As an example, the vehicle-mounted display module further includes a buffer layer 12 . During installation, the buffer layer 12 is disposed between the FOG module 9 and the first sheet metal 1 , thereby providing buffer protection for the FOG module 9 and preventing the FOG module 9 from being damaged.

[0045] In one embodiment, referring to Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 The vehicle-mounted display module also includes a first FPC13 and a second FPC14; the first end of the first FPC13 is inserted into the accommodating space of the backlight structure and is connected to the light source component 3 of the backlight structure, and a first gap exists between the second end of the first FPC13 and the backlight structure; the second FPC14 wraps the backlight structure, and the first end of the second FPC14 is connected to the FOG module 9, and a second gap exists between the second end of the second FPC14 and the backlight structure.

[0046] As an example, the vehicle display module also includes a first FPC 13 and a second FPC 14. The first FPC 13 and the second FPC 14 are lightbar FPCs, which are flexible printed circuits (FPCs) used to connect the LED light bar 31 in the backlight module. They play a key role in circuit connection, spatial adaptation, and optical performance optimization. During installation, the first end of the first FPC 13 is inserted into the accommodating space of the backlight structure and connected to the light source assembly 3 of the backlight structure. A first gap is formed between the second end of the first FPC 13 and the backlight structure, connecting the first FPC 13 and the light source assembly 3, providing convenient user control of the light source assembly 3. The second FPC 14 wraps around the backlight structure, and the first end of the second FPC 14 is connected to the FOG module 9. A second gap is formed between the second end of the second FPC 14 and the backlight structure, connecting the second FPC 14 and the FOG module 9, providing convenient user control of the FOG module 9. The vehicle-mounted display module also includes at least one of an FPC reinforcement plug-in handle 15, a backlight logo 16, a positioning column 17 and a connecting column 18; during installation, the FPC reinforcement plug-in handle 15 is set on the second FPC 14, which can enhance the installation stability of the second FPC 14; the backlight logo 16 is set on the backlight structure, specifically the backlight logo 16 is set on the second main board 201 of the second sheet metal 2, which can improve the visibility of the vehicle-mounted display module, enhance the interactive experience and ensure functional reliability; the positioning column 17 is set on the backlight structure, specifically multiple positioning columns 17 are set on the second main board 201 of the second sheet metal 2, to provide positioning for the backlight structure; the connecting column 18 is set on the backlight structure, specifically the connecting column 18 is set in a ring-shaped interval on the second main board 201 of the second sheet metal 2, to facilitate the fixing of the backlight structure.

[0047] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A backlight structure, characterized in that: comprising a first sheet metal, a second sheet metal, a light source assembly and a sealing member; The first sheet metal and the second sheet metal are detachably connected to form an accommodating space therebetween, and the light source assembly is disposed in the accommodating space; The sealing member wraps a connection position between the first sheet metal and the second sheet metal.

2. The backlight structure according to claim 1, wherein: The first sheet metal includes a first main plate and a first supporting wall extending from the periphery of the first main plate along a first direction; The second sheet metal includes a second main board and a second supporting wall extending from the periphery of the second main board along a second direction; The first main board and the second main board are arranged parallel to each other, the first direction and the second direction are opposite to each other, and the first supporting wall is located on the inner side or the outer side of the second supporting wall; The first supporting wall and the second supporting wall are detachably connected.

3. The backlight structure according to claim 2, wherein: The first supporting wall includes at least two connecting walls; the at least two connecting walls are distributed in an annular shape; A weight-reducing avoidance groove is provided on a portion of each connecting wall located at a corner.

4. The backlight structure according to claim 1, wherein: Either one of the first sheet metal and the second sheet metal is provided with a slot, and the other is provided with a protrusion, the protrusion being engaged with the slot; Alternatively, either one of the first sheet metal and the second sheet metal is provided with a first adhesive, and the other is provided with a second adhesive, and the first adhesive is in contact with the second adhesive; Alternatively, either one of the first sheet metal and the second sheet metal is provided with a first magnetic member, and the other is provided with a second magnetic member, and the first magnetic member is connected to the second magnetic member; Alternatively, either one of the first sheet metal and the second sheet metal is provided with a first connecting hole, and the other is provided with a second connecting hole, and a fastener is passed through the first connecting hole and the second connecting hole.

5. The backlight structure according to claim 4, characterized in that: In the light emitting direction of the light source assembly, the height of the protrusion is ≥1.5mm; In a direction perpendicular to the light emitting direction of the light source assembly, the width of the protrusion is ≥0.3 mm.

6. The backlight structure according to claim 4, characterized in that: A guide structure is provided at one end of the clamping protrusion close to the mainboard, and the angle between the plane where the guide structure is located and the plane where the light emitting direction of the light source assembly is located is 15°-45°.

7. The backlight structure according to claim 1, wherein: The light source assembly includes an LED light bar and a light path control layer; The LED light strip is fixed to a side wall of the second sheet metal through a connecting piece; The light path regulating layer is mounted on the inner bottom wall of the second sheet metal and is arranged corresponding to the LED light strip; A display window is provided on the first sheet metal, and the display window is used to reveal the light path regulating layer.

8. A vehicle-mounted display module, characterized in that: Comprising a cover glass, a FOG module and the backlight structure according to any one of claims 1 to 7; The cover glass and the first sheet metal of the backlight structure are connected via a first adhesive layer; The FOG module is mounted on the cover glass via a second adhesive layer and is arranged corresponding to the light source assembly of the backlight structure.

9. The vehicle-mounted display module according to claim 8, characterized in that: The vehicle-mounted display module further includes a buffer layer, which is arranged between the FOG module and the first sheet metal.

10. The vehicle-mounted display module according to claim 8, characterized in that: The vehicle-mounted display module further includes a first FPC and a second FPC; The first end of the first FPC is inserted into the accommodating space of the backlight structure and connected to the light source assembly of the backlight structure, and a first gap exists between the second end of the first FPC and the backlight structure; The second FPC wraps the backlight structure, a first end of the second FPC is connected to the FOG module, and a second gap exists between the second end of the second FPC and the backlight structure.

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