A narrow-bezel in-vehicle display screen

Abstract

This application provides a narrow-bezel vehicle display screen. It utilizes concealed holes in the bezel and locking blocks on the backlight assembly. The backlight assembly is installed in a mounting slot on the rear cover by inserting the locking blocks into the concealed holes. Simultaneously, an elastic plug is placed between the backlight assembly and the mounting slot. During installation, the backlight assembly compresses and deforms the elastic plug. After the backlight assembly is installed in the mounting slot, the elastic force of the plug holds the backlight assembly in place. Because the elastic plug is deformable and positioned within a pre-reserved expansion gap between the backlight assembly and the inner wall of the mounting slot, there is no need to specifically increase the bezel width for the elastic plug. The elastic plug can also adapt to the expansion and deformation of the backlight assembly during use, ensuring the practicality of this solution. This application eliminates the need for a middle frame, thus avoiding the need to reserve a width E for the mating structure between the middle frame and the mounting slot, effectively reducing the bezel width.

Description

Technical Field

[0001] This utility model relates to the field of vehicle display technology, specifically a narrow-bezel vehicle display. Background Technology

[0002] Existing automotive display structures typically include: a glass cover (CG), a FOG (FPC on Glass) module, a backlight assembly, and a rear cover. The backlight assembly includes optical films such as a light guide plate (LGP), a BEF (Brightness Enhancement Film), a diffuser film, and a reflective sheet, all bonded together. A mounting slot is provided on the rear cover, and the backlight assembly is bonded into this slot using a bonding process. The FOG and cover are bonded together using an OCR process. The FOG is mounted on the backlight assembly via a mid-frame, and the cover (CG) is then attached to the outer frame of the mounting slot using hot melt adhesive. The cover encloses the FOG and backlight assembly within the mounting slot, forming a complete automotive display.

[0003] like Figure 1 As shown, structurally, to ensure the cover plate CG is firmly bonded with hot melt adhesive, the sidewall of the mounting groove has a width of D. The middle frame is installed on the sidewall of the mounting groove from top to bottom, also requiring a reserved installation fit width E. According to process requirements, the light guide plate is placed in the mounting groove, and an expansion gap C needs to be reserved between the light guide plate and the sidewall of the mounting groove. Aesthetically, the edge of the light guide plate must be larger than the display area AA (active area) of the FOG module, with a design distance B between them. Simultaneously, the liquid crystal viewing area VA (view area) of the glass cover plate must be smaller than the display area AA of the FOG module; that is, VA needs to be narrower by a width A towards the center compared to AA. This gradual reduction in size results in a relatively wide bezel between the liquid crystal viewing area VA seen by the user and the outer edge of the vehicle display screen. Figure 1 In the embodiment, the bezel is 5.1mm wide. However, the wider bezel affects the aesthetics of the display screen. Summary of the Invention

[0004] To address the issue of wide bezels in existing vehicle displays, this invention provides a narrow-bezel vehicle display that achieves this by structurally adjusting the display structure.

[0005] The structure of this utility model is as follows: a narrow-bezel vehicle display screen, comprising: a rear cover, a backlight assembly, a FOG module, and a cover plate; the rear cover comprises: a back plate and a frame; the back plate has a rectangular structure; the frame is perpendicular to the back plate; the frame and the back plate together form a mounting groove; the backlight assembly is disposed in the mounting groove; characterized in that it further comprises: an elastic plug with elastic deformation capability;

[0006] A downward-facing dark hole is formed on the frame located at the top position, and a protruding snap-fit ​​block is provided on the top of the backlight assembly, the size of which is adapted to the size of the dark hole;

[0007] When the backlight assembly is installed in the mounting slot, the snap-fit ​​block is inserted into the dark hole, and the elastic plug is positioned between the backlight assembly and the mounting slot;

[0008] The outer edge perimeter of the cover plate is adapted to the outer perimeter of the mounting groove; the FOG module is disposed between the cover plate and the backlight assembly, and the edge of the cover plate is bonded to the upper end face of the mounting groove.

[0009] Its further features are:

[0010] The elastic plugs are L-shaped and are respectively installed at the two top corners of the backlight assembly;

[0011] The backlight assembly includes: a reflective sheet, a light guide plate, a lower diffuser film, a lower BEF, and an upper BEF, which are bonded together from bottom to top;

[0012] In the backlight assembly, the sidewall of the light guide plate is provided with an insertion piece perpendicular to the light guide plate film. The sides of the lower diffuser film, lower BEF and upper BEF are provided with recessed insertion grooves facing the center of the film. The position and size of the insertion groove are adapted to the insertion piece. The length of the insertion piece is adapted to the total thickness of the lower diffuser film, lower BEF and upper BEF.

[0013] When the reflective sheet, light guide plate, lower diffuser film, lower BEF and upper BEF are bonded together, the insert piece is located in the insert slot;

[0014] It also includes: an LED light strip, which is disposed at the bottom of the backlight assembly;

[0015] A ribbon cable groove is provided on the bottom edge of the mounting slot;

[0016] The four corners of the mounting groove are curved corners.

[0017] This application provides a narrow-bezel vehicle display screen. Its structure eliminates the need for a mid-frame. Instead, it uses concealed holes in the bezel and locking blocks on the backlight assembly. The backlight assembly is installed in a mounting slot on the rear cover by inserting the locking blocks into the concealed holes. Simultaneously, an elastic plug is placed between the backlight assembly and the mounting slot. During installation, the backlight assembly compresses and deforms the elastic plug. After the backlight assembly is installed in the mounting slot, the elastic force of the plug holds the backlight assembly in place. Because the elastic plug is deformable and positioned in the pre-reserved expansion gap between the backlight assembly and the inner wall of the mounting slot, there is no need to specifically increase the bezel width for the elastic plug. The elastic plug can also adapt to the expansion and deformation of the backlight assembly during use, ensuring the practicality of this solution. By eliminating the mid-frame, this application eliminates the need to reserve a width E for the fit between the mid-frame and the mounting slot, effectively reducing the bezel width. Attached Figure Description

[0018] Figure 1 This describes the composition of the border width in the existing structure.

[0019] Figure 2 This is a schematic diagram of the assembled structure of the vehicle-mounted display screen of this application;

[0020] Figure 3 This is a schematic diagram of the back cover structure;

[0021] Figure 4 This is a schematic diagram of the hidden hole on the back cover;

[0022] Figure 5 This is a schematic diagram of the elastic plug structure;

[0023] Figure 6 This is a schematic diagram of the connector and the connector slot.

[0024] Figure 7 This is a schematic diagram of the bottom structure of an in-vehicle display screen;

[0025] Figure 8 for Figure 7 A magnified structural diagram of point a in the middle;

[0026] Figure 9 A schematic diagram of the material stacking structure for the backlight component;

[0027] Figure 10 This describes the composition of the border width in this application. Detailed Implementation

[0028] like Figures 2-9 As shown, this utility model includes a narrow-bezel vehicle display screen, which includes: a rear cover 1, a backlight assembly 2, a FOG module 3, a cover plate 4, and an LED light strip 6. The rear cover 1 is a die-cast metal alloy part.

[0029] like Figures 3-4 As shown, the back cover 1 includes a back panel 11 and a frame 12. The back panel 11 has a rectangular structure, and the frame 12 is perpendicular to the back panel 11 and disposed on the edge of the back panel. The frame 12 and the back panel 11 together form a rectangular mounting groove; the backlight assembly 2 is disposed in the mounting groove.

[0030] A downward-facing concealed hole 13 is made on the top edge 12, as shown. Figure 5 As shown, each diaphragm in the backlight assembly 2 has a protruding snap-fit ​​block 201 at the same position on its top, and the size of the snap-fit ​​block 201 is adapted to the size of the dark hole 13. Figure 2 In the illustrated embodiment, to ensure stable installation of the backlight assembly 2 and the back cover 1, four dark holes 13 are provided. Corresponding to these dark holes, each diaphragm in the backlight assembly 2 has four locking blocks 201 on its top. In this application, the middle frame structure is eliminated, and the backlight assembly 2 is installed in the mounting slot by inserting the locking blocks 201 into the dark holes 13.

[0031] To ensure the backlight assembly 2 can be stably installed in the mounting slot, this application also includes an elastic plug 5 with elastic deformation capability. When assembling the backlight assembly 2, the elastic plug 5 is first placed in a preset position within the mounting slot, then the snap-fit ​​block 201 is inserted into the dark hole 13, and finally the bottom of the backlight assembly 2 is placed into the mounting slot, with the elastic plug 5 positioned between the backlight assembly 2 and the mounting slot. During installation, the elastic plug 5 is compressed and deformed by the backlight assembly 2. Once the backlight assembly 2 is fully installed in the mounting slot, the elastic plug 5 will press the backlight assembly 2 firmly against itself using its own elasticity.

[0032] Specifically, in this embodiment, the elastic plug 5 is set to an L shape and installed at the two top corners of the backlight assembly 2, pressing the backlight assembly 2 tightly from both sides and the top.

[0033] like Figure 6 and Figure 9 As shown, the backlight assembly 2 includes: a reflective sheet 21, a light guide plate 22, a lower diffuser film 23, a lower BEF 24, and an upper BEF 25, which are glued together from bottom to top; the LED light strip 6 is disposed at the bottom of the backlight assembly 2 and is fixedly attached to the bottom of the backlight assembly 2 with adhesive strip 9, which also blocks the light emitted from the LED light strip 6.

[0034] In the backlight assembly 2, a connector 202 perpendicular to the film of the light guide plate 22 is provided on the side wall of the light guide plate 22. The lower diffuser film 23, the lower BEF 24 and the upper BEF 25 are provided with recessed connector grooves 203 facing the center of the film. The position and size of the connector grooves 203 are adapted to the connector 202. The length of the connector 202 is adapted to the total thickness of the lower diffuser film 23, the lower BEF 24 and the upper BEF 25. When the reflector 21, the light guide plate 22, the lower diffuser film 23, the lower BEF 24 and the upper BEF 25 are bonded together, the connector 202 is located in the connector groove 203.

[0035] Although the films of the backlight assembly 2 are glued together, in order to ensure structural stability, this application also designs a connector 202 and a connector slot 203. The two work together to ensure that the films in the backlight assembly 2 can maintain structural stability.

[0036] like Figure 9 As shown, during assembly, an expansion gap 8 needs to be reserved between the backlight assembly 2 and the FOG module 3. In this application, the outer perimeter of the cover plate 4 is adapted to the outer perimeter of the frame 12 of the mounting groove; the FOG module 3 is disposed between the cover plate 4 and the backlight assembly 2, and the edge of the cover plate 4 is bonded to the upper surface of the frame 12 by adhesive application. The backlight assembly 2 is installed in the mounting groove through the cooperation of the dark hole 13 and the snap-fit ​​block 201, and at the same time, the double-sided adhesive strip 211 on the back of the reflector 21 at the bottom of the backlight assembly 2 is bonded to the back plate 11 to improve the stability of the backlight assembly 2 installation. The height of the frame 12 and the thickness of the adhesive are designed so that after the edge of the cover plate 4 is bonded to the upper surface of the frame 12 by adhesive application, the distance between the FOG module 3 and the backlight assembly 2 meets the width of the expansion gap 8.

[0037] In this application, a ribbon cable groove 14 is provided on the bottom edge 12 of the mounting slot; so that the ribbon cable 31 of the FOG module 3 can be led out from the ribbon cable groove 14 to the external groove 16 at the bottom of the rear cover 1, and connected to the control structure of the intelligent vehicle (not marked in the figure).

[0038] In this application, the four corners of the mounting slot are rounded corners 15 to ensure that the backlight assembly 12 will not be damaged by the edges and corners of the mounting slot during installation.

[0039] After using the technical solution of this utility model, such as Figure 10 As shown, the width of the bezel comprises: the thickness D of the bezel 12, the reserved gap C between the light guide plate LGP and the bezel 12, the design distance B between the edge of the light guide plate and the display area AA of the FOG module, and the design distance A between the liquid crystal viewing area VA of the glass cover and the display area AA of the FOG module. In this embodiment, by omitting the middle frame, the bezel can be compressed to a width of 4.1mm.

Claims

1. A narrow-bezel in-vehicle display screen comprising: The back cover, backlight assembly, FOG module, and cover plate are provided. The back cover includes a back plate and a frame. The back plate has a rectangular structure, and the frame is perpendicular to the back plate. The frame and the back plate together form a mounting groove. The backlight assembly is disposed in the mounting groove. The back cover is characterized in that it further includes an elastic plug with elastic deformation capability. A downward-facing dark hole is formed on the frame located at the top position, and a protruding snap-fit ​​block is provided on the top of the backlight assembly, the size of which is adapted to the size of the dark hole; When the backlight assembly is installed in the mounting slot, the snap-fit ​​block is inserted into the dark hole, and the elastic plug is positioned between the backlight assembly and the mounting slot; The outer edge perimeter of the cover plate is adapted to the outer perimeter of the mounting groove; the FOG module is disposed between the cover plate and the backlight assembly, and the edge of the cover plate is bonded to the upper end face of the mounting groove.

2. The narrow-bezel in-vehicle display of claim 1, wherein: The elastic plugs are L-shaped and are installed at the two top corners of the backlight assembly.

3. The narrow-bezel in-vehicle display screen of claim 1, wherein: The backlight assembly includes: a reflective sheet, a light guide plate, a lower diffuser film, a lower BEF, and an upper BEF, which are bonded together from bottom to top.

4. The narrow-bezel in-vehicle display screen of claim 3, wherein: In the backlight assembly, the sidewall of the light guide plate is provided with an insertion piece perpendicular to the light guide plate film, and the sides of the lower diffuser film, lower BEF and upper BEF are provided with recessed insertion grooves facing the center of the film, and the position and size of the insertion grooves are adapted to the insertion piece. The length of the insert is adapted to the total thickness of the lower diffusion film, the lower BEF, and the upper BEF; When the reflector, light guide plate, lower diffuser film, lower BEF and upper BEF are bonded together, the insert is located in the insert slot.

5. The narrow-bezel in-vehicle display screen of claim 1, wherein: It also includes an LED light strip, which is disposed at the bottom of the backlight assembly.

6. The narrow-bezel in-vehicle display screen of claim 1, wherein: A ribbon cable groove is provided on the bottom edge of the mounting slot.

7. The narrow-bezel in-vehicle display screen of claim 1, wherein: The four corners of the mounting groove are curved corners.

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