A thin in-vehicle display screen

Abstract

The application provides a thin vehicle-mounted display screen, wherein front and rear grooves are arranged on the front and rear of the back plate of the rear shell, the backlight control chip and the PCBA circuit board are arranged in the rear groove, the rear groove does not occupy the whole area of the back plate in the application, but is arranged only in the lower half of the back plate, so that the vehicle-mounted display screen as a whole has a shape of being narrow at the top and wide at the bottom; compared with the structure in the prior art that the backlight control chip and the backlight assembly are arranged together, the thickness of the upper part of the display screen is effectively reduced.

Description

Technical Field

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

[0002] Most existing automotive displays consist of a rear housing, a cover glass (CG), a PCBA circuit board, a backlight assembly, a backlight unit (BLU) control chip, a FOG (FPC on Glass) screen, and an OCR (Optical Clear Resin) film layer. The backlight assembly includes a backlight board, a miniLED (Mini Light Emitting Diode) flexible circuit board housing the light-emitting LEDs, and an optical film (FILM) comprising multiple optical films. With the need for production cost optimization or technological upgrades, reducing the overall thickness of automotive displays has become a design trend. To simultaneously control costs, improving the thickness of automotive displays through structural modifications without using more expensive materials has become a research direction. Summary of the Invention

[0003] To address the issue of the need to improve the thickness of existing in-vehicle displays, this invention provides a thinner in-vehicle display that can improve the thickness of the display from a structural design perspective.

[0004] The structure of this utility model is as follows: a thin vehicle-mounted display screen, comprising: a rear shell, a PCBA circuit board, a cover plate CG, a MiniLED component, a backlight control chip, a FOG screen, and an optical film FILM; characterized in that the rear shell comprises: a back plate, a front upright plate, and a rear upright plate; The back panel is a rectangular plate structure. The front upright plate is set around the four edges of the back panel and perpendicular to the upper surface of the back panel. The front upright plate and the back panel form a front groove. The rear upright plate is located in the lower half of the back panel and is perpendicular to the lower end of the back panel. The rear upright plate and the lower half of the back panel form a rear groove. The lower part of the back plate is provided with a rectangular wire through groove that runs through the front and rear end faces, and the front upright plate is provided with a wire groove on the upright plate below it. The MiniLED component, the optical film FILM, the FOG screen, and the cover plate CG are arranged in the front slot from bottom to top; the backlight control chip and the PCBA circuit board are arranged in the rear slot; the FOG screen's ribbon cable passes through the back plate and connects to the PCBA circuit board through the wire groove, and the MiniLED component's ribbon cable passes through the back plate and connects to the PCBA circuit board through the wire through slot.

[0005] Its further features are: An OCR film layer is provided between the FOG screen and the cover plate CG; The optical film material FILM includes: a lower diffuser, a beam splitter, an upper diffuser, a QD quantum film, a BEF film, and a DEBEF film, arranged from bottom to top with the same length and width dimensions; It also includes: a middle frame, the middle frame comprising: a rectangular frame body, wherein the rectangular frame body is provided with inverted L-shaped bends that extend upward and outward at intervals; The front plate has two steps on the inner side of the front groove, forming three step surfaces of different heights, arranged in order from low to high as: the first step surface, the second step surface, and the third step surface; the third step surface is open at the bottom edge of the back plate, and the wire groove is formed on the second step surface; The outer perimeter of the first step surface is adapted to the outer perimeter of the FOG screen, and the outer perimeter of the second step surface is adapted to the outer perimeter of the cover plate CG. The outer perimeter of the frame is adapted to the outer perimeter of the first step surface; the height of the bent part is adapted to the height difference between the first step surface and the second step surface on the front upright plate; the frame of the middle frame is set on the first step surface, and the width of the middle frame is greater than the width of the first step surface; The MiniLED component and the optical film FILM are arranged from top to bottom in the front slot. The middle frame is placed on top of the optical film FILM. The FOG screen is placed on the upper surface of the middle frame. The cover plate CG is set above the FOG screen through the bending part of the middle frame. A gap is provided between the MiniLED component and the optical film FILM; A heat-dissipating adhesive layer is provided between the MiniLED component and the backplate.

[0006] This application provides a thin automotive display screen. By setting a front slot and a rear slot at the front and rear of the back panel of the rear shell respectively, the backlight control chip and PCBA circuit board are placed in the rear slot. In this application, the rear slot does not occupy the entire area of ​​the back panel, but is only set in the lower half of the back panel, so that the automotive display screen presents an overall shape that is narrow at the top and wide at the bottom. Compared with the structure of the prior art that sets the backlight control chip and backlight assembly together, the thickness of the upper part of the display screen is effectively reduced. Attached Figure Description

[0007] Figure 1 This is a three-dimensional structural diagram of the vehicle-mounted display screen of this application; Figure 2 This is a schematic diagram of the structure of the rear slot in a vehicle display screen. Figure 3 A schematic diagram of the front groove of the backplate; Figure 4 This is a schematic diagram of the structure of an optical film material (FILM). Figure 5 A schematic diagram of the overall structure of the middle frame; Figure 6 A schematic diagram of the bent plate in the middle frame; Figure 7 This is a structural diagram of the lower stepped surface of the front upright plate; Figure 8 This application presents a schematic diagram of the vehicle-mounted display screen installation method. Detailed Implementation

[0008] like Figures 1-8 As shown, this application includes a thin-film automotive display screen, comprising: a rear shell 1, a mid-frame 2, a PCBA circuit board 3, a cover plate CG 4, a MiniLED assembly 5, a backlight control chip 6, a FOG screen 7, and an optical film FILM 8; the rear shell 1 includes: a back panel 11, a front upright plate 12, and a rear upright plate 13. In this application, the direction where the cover plate CG 4 is located is considered the top, the direction where the back panel 11 is located in the rear shell 11 is considered the bottom, and the direction where the ribbon cable is pulled out is considered the bottom. During installation, the rear shell 11 contacts the intelligent vehicle, and the user uses the automotive display screen through the surface where the cover plate CG 4 is located.

[0009] like Figure 2 and Figure 3 As shown, the backplate 11 in this application is also used as a backlight plate in the optical film material. The backplate 11 has a rectangular plate structure. The front upright plate 12 is arranged around the four edges of the backplate 11 perpendicular to the upper surface of the backplate 11, and the front upright plate 12 forms a front groove 14 with the backplate 11. The rear upright plate 13 is located in the lower half of the backplate 11 and is perpendicular to the lower end of the backplate 11. The rear upright plate 13 and the lower half of the backplate 11 form a rear groove 15.

[0010] In this application, the back cover 1 is a die-cast part. In order to ensure that there is no interference between the flexible flat cable of the MiniLED component 5 and the flat cable of the FOG screen 7, a rectangular through groove that runs through the front and rear end faces is provided at the lower part of the back plate 11 as a wire through groove 17 for the flexible flat cable of the MiniLED component 5. At the same time, a wire groove 16 for the flat cable of the FOG screen 7 is opened on the upright plate below the front upright plate 12.

[0011] The MiniLED component 5, optical film FILM 8, FOG screen 7, and cover plate CG 4 are arranged in the front slot 14 in a bottom-up order; the backlight control chip 6 and PCBA circuit board 3 are arranged in the rear slot 15; the ribbon cable of FOG screen 7 passes through the back plate 11 through the wire groove 16 and connects to PCBA circuit board 3, and the ribbon cable of MiniLED component 5 passes through the back plate 11 through the wire through groove 17 and connects to PCBA circuit board 3.

[0012] In existing technologies, the backlight control chip 6 is typically located on the back of the flexible circuit board of the MiniLED component 5. This design concentrates the wiring and timing control circuitry between the backlight control chip 6 and the MiniLED component 5, resulting in a thicker display screen. In this application, a rear slot 15 is created in the lower half of the backplate 11, allowing the PCBA circuit board 3 and the backlight control chip 6 to be mounted together. The wiring of the MiniLED component 5 and the backlight control chip 6 is pulled out from the bottom wire through-groove 17 and connected to the PCBA circuit board 3. The wiring of the FOG screen 7 is pulled out from the bottom wire groove 16 and connected to the PCBA circuit board 3, effectively reducing the thickness of the upper part of the automotive display screen. Figure 8 As shown, the vehicle-mounted display screen in this application is assembled into a shape that is thinner at the top and thicker at the bottom. The thicker lower part of the vehicle-mounted display screen is connected to the bracket 10, and the bracket 10 is used to mount the display screen in the mounting bracket of the smart vehicle. Both the bracket 10 and the rear shell 1 are made of aluminum alloy, which has good heat dissipation performance, thereby improving the heat dissipation effect of the vehicle-mounted display screen.

[0013] In order to mount the various components of the display screen in the front slot 14, this application also includes a middle frame 2. For example... Figure 5 and Figure 6 As shown, the middle frame 2 includes: a rectangular frame 21, on which inverted L-shaped bends 22 are provided at intervals, pointing upwards and outwards.

[0014] like Figure 7 As shown, two steps are provided on the front upright plate 12 inside the front slot 14, forming three step surfaces of different heights, arranged in order from low to high as: first step surface 121, second step surface 122, and third step surface 123. The outer perimeter of the first step surface 121 is adapted to the outer perimeter of the FOG screen 7, and the outer perimeter of the second step surface 122 is adapted to the outer perimeter of the cover plate CG 4.

[0015] To ensure a smooth connection of the cabling from front to back, such as Figure 2 , Figure 3 and Figure 4As shown, the rear plate 13 is not provided at the lowest position of the rear slot 15, and the third step surface 123 is open at the lowest side length position of the back plate 11. The wire groove 16 is opened on the second step surface 122.

[0016] The outer perimeter of the frame 21 is adapted to the outer perimeter of the first step surface 121; the height of the bent part 22 is adapted to the height difference between the first step surface 121 and the second step surface 122 on the front upright plate 12; the frame 21 of the middle frame 2 is set on the first step surface 121, and the width of the frame 21 of the middle frame 2 is greater than the width of the first step surface 121.

[0017] The MiniLED component 5 and the optical film FILM 8 are arranged from top to bottom in the front slot 14. The middle frame 2 is placed on top of the optical film FILM 8, the FOG screen 7 is placed on top of the middle frame 2, and the cover plate CG 4 is placed on top of the bent part 22 of the middle frame 2.

[0018] like Figure 4 As shown, the optical film FILM 8 includes: a lower diffuser 82, a beam splitter 83, an upper diffuser 84, a QD quantum film 85, a BEF film 86, and a DEBEF film 87, all arranged from bottom to top with the same length and width. The layers of the optical film FILM 8 are connected together by adhesive. In the MiniLED component 5, the lower diffuser 82 and the upper diffuser 84 are both DIF (diffusion sheet) films that serve to diffuse light; the QD quantum film 85 is used to adjust white light; and the BEF (Brightness Enhancement Film) film 86 and the DEBEF film 87 are used to adjust brightness. The beam splitter 83 (such as a cylindrical lens or polarizer) is used to achieve multi-screen zone display.

[0019] After placing the MiniLED component 5 in the front slot 14, a heat dissipation adhesive layer (not marked in the figure) is provided between the MiniLED component 5 and the back plate 11 to improve heat dissipation. Simultaneously, a gap 81 is needed between the MiniLED component 5 and the optical film FILM 8 to allow LED flow. In this embodiment, a transparent resin material is used as a spacer between the MiniLED component 5 and the optical film FILM 8, which also serves as a lampshade and protection for the MiniLED. The optical film FILM 8 is placed on top of the MiniLED component 5, and then the frame 21 of the middle frame 2 is placed on the first stepped surface 121. Because the width of the frame 21 is greater than the width of the first stepped surface 121, it can simultaneously limit the position of the optical film FILM 8 below. The FOG screen 7 is adhered to the upper surface of the frame 21 using an adhesive layer 91, and then the cover plate CG 4 is placed on the upper surface of the second stepped surface 122. An OCR film layer 9 is provided between the FOG screen 7 and the cover plate CG 4.

[0020] In this embodiment, the thickness of the heat dissipation adhesive layer between the MiniLED component 5 and the back plate 11 is 0.1mm, the thickness of the MiniLED component 5 is 0.6mm, the gap between the MiniLED component 5 and the optical film FILM 8 is 0.5mm, the thickness of the optical film FILM 8 is 2.875mm, the thickness of the FOG screen 7 is 1.2mm, the thickness of the OCR film layer 9 is 0.2mm, and the thickness of the cover plate CG 4 is 0.7mm. Therefore, the total thickness of the thinner upper part of the vehicle display screen is 9.475mm, which is reduced to less than 10mm.

[0021] By using the technical solution of this utility model, the thickness of the vehicle display screen is concentrated on the ground side, reducing the thickness of the display screen at its location. The ground side, where the thickness is concentrated, can be installed in the vehicle body without being exposed, thus reducing the overall thickness of the display screen. The backlight shell can be used as a decorative part, saving the use of the assembly shell and reducing costs.

Claims

1. A thin in-vehicle display screen, comprising: The rear shell, PCBA circuit board, cover plate CG, MiniLED assembly, backlight control chip, FOG screen and optical film FILM; characterized in that the rear shell includes: a back plate, a front panel and a rear panel; The back panel is a rectangular plate structure. The front upright plate is set around the four edges of the back panel and perpendicular to the upper surface of the back panel. The front upright plate and the back panel form a front groove. The rear upright plate is located in the lower half of the back panel and is perpendicular to the lower end of the back panel. The rear upright plate and the lower half of the back panel form a rear groove. The lower part of the back plate is provided with a rectangular wire through groove that runs through the front and rear end faces, and the front upright plate is provided with a wire groove on the upright plate below it. The MiniLED component, the optical film FILM, the FOG screen, and the cover plate CG are arranged in the front slot from bottom to top; the backlight control chip and the PCBA circuit board are arranged in the rear slot; the FOG screen's ribbon cable passes through the back plate and connects to the PCBA circuit board through the wire groove, and the MiniLED component's ribbon cable passes through the back plate and connects to the PCBA circuit board through the wire through slot.

2. The thin vehicle-mounted display screen according to claim 1, characterized in that: An OCR film layer is disposed between the FOG screen and the cover plate CG.

3. The thin vehicle-mounted display screen according to claim 1, characterized in that: The optical film material FILM includes: a lower diffuser, a beam splitter, an upper diffuser, a QD quantum film, a BEF film, and a DEBEF film, arranged from bottom to top with the same length and width dimensions.

4. The thin vehicle-mounted display screen according to claim 1, characterized in that: It also includes: a middle frame, which includes: a rectangular frame body, on which inverted L-shaped bends are provided at intervals, pointing upwards and outwards.

5. The thin vehicle-mounted display screen according to claim 4, characterized in that: The front plate has two steps on the inner side of the front groove, forming three step surfaces of different heights, arranged in order from low to high as: the first step surface, the second step surface, and the third step surface; the third step surface is open at the bottom edge of the back plate, and the wire groove is formed on the second step surface; The outer perimeter of the first step surface is adapted to the outer perimeter of the FOG screen, and the outer perimeter of the second step surface is adapted to the outer perimeter of the cover plate CG. The outer perimeter of the frame is adapted to the outer perimeter of the first step surface; the height of the bent part is adapted to the height difference between the first step surface and the second step surface on the front upright plate; the frame of the middle frame is set on the first step surface, and the width of the middle frame is greater than the width of the first step surface; The MiniLED component and the optical film FILM are arranged from top to bottom in the front slot. The middle frame is placed on top of the optical film FILM. The FOG screen is placed on the upper surface of the middle frame. The cover plate CG is set above the FOG screen through the bending part of the middle frame.

6. The thin vehicle-mounted display screen according to claim 1, characterized in that: A gap is provided between the MiniLED component and the optical film FILM.

7. The thin vehicle-mounted display screen according to claim 1, characterized in that: A heat-dissipating adhesive layer is provided between the MiniLED component and the backplate.

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