Vehicle-mounted display module and vehicle

Abstract

The utility model discloses a vehicle-mounted display module and a vehicle. The vehicle-mounted display module comprises a heat dissipation supporting plate; the display panel is located on the heat dissipation supporting plate; the driving structure is located on the side, away from the display panel, of the heat dissipation supporting plate, and the driving structure is electrically connected with the display panel through a flexible bending circuit; the driving structure comprises a printed circuit board, and a plurality of driving chips are arranged on the printed circuit board; the electrostatic protection layer is located on the side, away from the display panel, of the driving structure, and the orthographic projection of the electrostatic protection layer on the printed circuit board covers at least part of the driving chip. Thus, at least part of the driving chip is protected by arranging the electrostatic protection layer, the probability that the driving chip is damaged by static electricity is reduced, and due to the fact that the driving chip in the printed circuit board is a device more prone to being damaged by static electricity, the electrostatic protection effect of the vehicle-mounted display module can be improved to a great extent by arranging the electrostatic protection layer; therefore, the reliability of the vehicle-mounted display module is improved.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and more particularly to an in-vehicle display module and a vehicle. Background Technology

[0002] With the development of intelligent vehicles, the display effect of in-vehicle display modules has also improved, such as increased resolution and processing speed. Correspondingly, the size of the electronic components within the display module has decreased while their number has increased. This reduction in size and increase in quantity makes them more susceptible to static electricity, leading to malfunctions and ultimately, abnormal operation of the display module. Therefore, improving the electrostatic discharge (ESD) protection capability of in-vehicle display modules has become a pressing technical problem to be solved in this field. Utility Model Content

[0003] This utility model provides an in-vehicle display module and a vehicle to improve the electrostatic protection capability of the in-vehicle display module.

[0004] In a first aspect, this utility model embodiment provides a vehicle-mounted display module, comprising:

[0005] Heat dissipation support plate;

[0006] The display panel is located on the heat dissipation support plate;

[0007] A driving structure is located on the side of the heat dissipation support plate opposite to the display panel. The driving structure is electrically connected to the display panel through a flexible bending circuit. The driving structure includes a printed circuit board on which multiple driving chips are disposed.

[0008] An electrostatic discharge (ESD) shielding layer is located on the side of the driving structure opposite to the display panel, and the ESD shielding layer's orthogonal projection on the printed circuit board covers at least a portion of the driving chip.

[0009] Secondly, this utility model embodiment provides a vehicle including the vehicle-mounted display module as described in the first aspect above.

[0010] The beneficial effects of this utility model are as follows:

[0011] This utility model provides an in-vehicle display module and a vehicle, comprising: a heat dissipation support plate; a display panel located on the heat dissipation support plate; a driving structure located on the side of the heat dissipation support plate opposite to the display panel, the driving structure being electrically connected to the display panel via a flexible bending circuit; the driving structure including a printed circuit board with multiple driving chips disposed thereon; and an electrostatic discharge (ESD) protection layer located on the side of the driving structure opposite to the display panel, the ESD protection layer's orthogonal projection on the printed circuit board covering at least a portion of the driving chips. Thus, by setting an ESD protection layer, at least a portion of the driving chips are protected, reducing the probability of the driving chips being damaged by electrostatic discharge. Furthermore, since the driving chips on the printed circuit board are more susceptible to ESD damage, setting an ESD protection layer can significantly improve the ESD protection effect of the in-vehicle display module, thereby improving the reliability of the in-vehicle display module. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of a vehicle-mounted display module provided in an embodiment of this utility model;

[0013] Figure 2 This is a schematic diagram showing the location of the electrostatic protection layer in a vehicle-mounted display module provided in this embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram showing the location of the waterproof adhesive in a vehicle display module provided in an embodiment of this utility model;

[0015] Figure 4 This is a top view of a protective layer in a vehicle-mounted display module provided in an embodiment of this utility model;

[0016] Figure 5 This is a cross-sectional view of the protective layer in a vehicle display module provided in an embodiment of the present utility model;

[0017] Figure 6 This is a cross-sectional view of another vehicle-mounted display module provided in this embodiment of the present utility model;

[0018] Figure 7 This is a structural schematic diagram of a vehicle provided in an embodiment of the present utility model. Detailed Implementation

[0019] The following description, in conjunction with the accompanying drawings, details the specific implementation of an in-vehicle display module and vehicle provided by this utility model. It should be noted that the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] This utility model embodiment provides a vehicle-mounted display module, such as... Figure 1 As shown, it includes:

[0021] Heat dissipation support plate 100;

[0022] The display panel 200 is located on the heat dissipation support plate 100;

[0023] The driving structure 300 is located on the side of the heat dissipation support plate 100 away from the display panel 200. The driving structure 300 is electrically connected to the display panel 200 through a flexible bending circuit 400. The driving structure 300 includes a printed circuit board 310, on which multiple driving chips 311 are provided.

[0024] An electrostatic discharge (ESD) shielding layer 510 is located on the side of the drive structure 300 opposite to the display panel 200. The orthogonal projection of the ESD shielding layer 510 on the printed circuit board 310 covers at least a portion of the drive chip 311.

[0025] In this way, by setting an electrostatic discharge (ESD) protection layer, at least some of the driver chips are protected, reducing the probability of the driver chips being damaged by ESD. Since the driver chips in the printed circuit board are more susceptible to ESD damage, setting an ESD protection layer can greatly improve the ESD protection effect of the vehicle display module, thereby improving the reliability of the vehicle display module.

[0026] The electrostatic discharge (ESD) shielding layer can be made of materials with antistatic and wave-absorbing capabilities, such as carbon-based materials like graphene, carbon nanotubes, and graphene oxide, and conductive polymers like polypyrrole and polyaniline. In this way, the ESD shielding layer's antistatic capability prevents external electrostatic interference, and its wave-absorbing capability absorbs external electromagnetic waves, thus protecting vulnerable areas of devices or traces, such as the area where the driver chip is located. This allows the entire printed circuit board to pass EMC (Electromagnetic Compatibility) testing, improving the safety of the automotive display module.

[0027] Furthermore, the orthographic projection of the electrostatic discharge (ESD) layer on the printed circuit board can cover all the driver chips, thereby enabling ESD protection for each driver chip on the printed circuit board and improving the reliability of the vehicle display module; or, the orthographic projection of the ESD layer on the printed circuit board can cover only some of the driver chips, such as only covering the driver chips that are susceptible to ESD, thereby reducing the area of ​​the ESD layer and reducing the manufacturing cost of the vehicle display module.

[0028] Optionally, such as Figure 2 As shown, Figure 2 This is a top view of the vehicle display module, and for clarity, Figure 2Only the printed circuit board 310, the driver chip 311, and the electrostatic discharge (ESD) shielding layer are shown. The ESD shielding layer includes multiple ESD shielding units 511, with the orthographic projection of one ESD shielding unit 511 on the printed circuit board 310 covering one driver chip 311. The driver chip 311 is covered by the ESD shielding units 511 and is therefore indicated by dashed lines. In this way, by protecting one driver chip 311 with one ESD shielding unit 511, the area of ​​the ESD shielding layer is prevented from being too large, thereby reducing the impact of the ESD shielding layer on other devices on the printed circuit board 310, and without affecting the setting of other film layers, thus optimizing the structure of the automotive display module.

[0029] Optionally, such as Figure 2 As shown, the multiple driver chips 311 included on the printed circuit board 310 have different sizes. At this time, the electrostatic discharge protection unit 511 can be set to correspond to the size of each driver chip 311, so as to avoid the waste of resources caused by the electrostatic discharge protection unit 511 being too large, and also to avoid the electrostatic discharge protection effect being poor due to the electrostatic discharge protection unit 511 being too small.

[0030] Alternatively, when the multiple driver chips included on the printed circuit board are of different sizes, the size of each electrostatic discharge (ESD) protection unit can be set to be the same. In this case, the size of the ESD protection unit can be set to cover all driver chips, thereby reducing the difficulty of setting up the ESD protection unit and reducing the manufacturing cost of the vehicle display module.

[0031] Of course, when the electrostatic discharge (ESD) protection layer has multiple ESD protection units, the orthographic projection of one ESD protection unit on the printed circuit board can cover multiple driver chips, thereby reducing the difficulty of setting up the ESD protection layer. Alternatively, the ESD protection layer can have only one ESD protection unit, whose orthographic projection on the printed circuit board covers all the driver chips that need to be covered, thereby providing ESD protection for these driver chips and further reducing the difficulty of setting up the ESD protection layer.

[0032] Optionally, such as Figure 1 As shown, the heat dissipation support plate 100 has a groove 110, and the drive structure 300 is located in the groove 110. In this way, by placing the drive structure 300 in the groove 110, the flatness of the back of the vehicle display module (i.e., the surface facing away from the display panel 200) can be improved, which facilitates the installation and use of the vehicle display module. Moreover, when sealing the drive structure with waterproof and dustproof structures, the higher flatness of the back of the vehicle display module makes it easier to set up the sealing structure.

[0033] Optionally, such as Figure 1 and Figure 3 As shown, Figure 3 This is a top view of the in-vehicle display module from one side of the drive structure, and it is used to display the drive structure. Figure 3The electrostatic discharge protection layer and other protective structures are not shown. Waterproof adhesive 320 is filled between the side of the printed circuit board 310 facing the heat dissipation support plate 100 and the heat dissipation support plate 100.

[0034] Thus, when a groove is provided in the heat dissipation support plate, by placing waterproof adhesive between the side of the printed circuit board and the heat dissipation support plate, a large amount of waterproof adhesive can be filled between the printed circuit board and the heat dissipation support plate in the groove, which can effectively prevent the intrusion of water vapor, thereby improving the waterproof effect of the vehicle display module.

[0035] Optionally, such as Figure 1 As shown, the surface M1 of the driving structure 300 facing away from the display panel 200 is flush with the surface M2 of the heat dissipation support plate 100 facing away from the display panel 200. This further improves the flatness of the back of the vehicle display module and enhances the sealing effect of the driving structure 300 when a dustproof and waterproof structure is installed.

[0036] Optionally, such as Figure 1 As shown, the vehicle display module also includes: an insulating layer 520 located on the side of the electrostatic protective layer 510 facing away from the display panel 200, and a conductive layer 530 located on the side of the insulating layer 520 facing away from the display panel 200. The orthogonal projection of the conductive layer 530 on the heat dissipation support plate 100 covers the groove 110. The conductive layer 530 can be made of a conductive material with excellent thermal conductivity, such as copper, silver, or doped aluminum nitride. The electrostatic protective layer 510, the insulating layer 520, and the conductive layer 530 can be collectively referred to as the protective layer.

[0037] Thus, by setting an insulating layer inside the protective layer, the breakdown resistance of the traces and components within the drive structure can be improved, the probability of short circuits in the drive structure can be reduced, and the reliability of the automotive display module can be improved. By setting a conductive layer inside the protective layer, the heat generated by the drive structure can be quickly conducted into the air or other structures with fast heat dissipation, reducing the temperature of the drive structure and thus improving the performance of the automotive display module. In addition, the conductive layer can cover the grooves on the heat dissipation support plate, improving the sealing effect at the drive structure and enhancing the waterproof and dustproof capabilities of the automotive display module.

[0038] Optionally, the heat dissipation support plate is made of a conductive material, and the grounding terminal of the printed circuit board is electrically connected to the heat dissipation support plate through a conductive layer. The heat dissipation support plate can be made of materials including, but not limited to, aluminum alloy and copper alloy. This further grounding of the printed circuit board through the conductive layer allows static electricity to be conducted away from the printed circuit board, eliminating the need for additional grounding lines, simplifying the structure of the automotive display module, and improving its electrostatic discharge (ESD) protection capability.

[0039] To clearly illustrate the structure of the protective layer, such as Figure 4 As shown, Figure 4A top view of the protective layer 500 is shown, from... Figure 4 As can be seen, the protective layer includes an electrostatic discharge (ESD) protection layer 510, which provides ESD protection for the driver chip in the printed circuit board. An insulating layer 520 surrounds the ESD protection layer 510 and can cover most of the driving structure, thereby providing insulation for the traces and devices within the driving structure. A conductive layer 530 surrounds the insulating layer 520, thereby covering the groove on the heat dissipation support plate. The larger area of ​​the conductive layer 530 also helps to improve the heat dissipation effect of the driving structure.

[0040] Optionally, such as Figure 5 As shown, Figure 5 for Figure 4 The cross-sectional view shown in the dashed line direction (A1-A2) of the vehicle display module also includes a conductive layer 530 located away from the heat dissipation support plate. Figure 5 A waterproof layer 540 (not shown) is located on one side. The entire waterproof layer 540 covers the conductive layer 530, thus achieving the waterproof effect of the waterproof layer 540. In this way, by setting the waterproof layer 540, a waterproof effect is provided for the drive structure, further improving the waterproof capability of the vehicle display module.

[0041] Optionally, such as Figure 5 As shown, the electrostatic discharge (ESD) protection layer 510 includes an antistatic coating 511 and an antistatic adhesive 512. The types of antistatic adhesive include, but are not limited to, conductive silver paste, carbon-based filled antistatic adhesive, ionic antistatic adhesive, and silicone-based antistatic adhesive. Therefore, by using antistatic adhesive 512 as the adhesive within the ESD protection layer 510, the ESD protection effect of the ESD protection layer 510 can be further improved, thus enhancing the reliability of the automotive display module.

[0042] Of course, such as Figure 6 As shown, the side of the heat dissipation support plate 100 facing away from the display panel 200 may not have a groove, so the driving structure 300 completely protrudes from the heat dissipation support plate 100. In this case, the protective layer 500 needs to be bent to cover the driving structure 300, as shown. Figure 6 The area shown by the dotted coil Q1 is the part of the protective layer 500 that is bent, thereby protecting the drive structure 300. Furthermore, when the heat dissipation support plate 100 uses a conductive material, a conductive layer can be achieved within the protective layer 500. Figure 6 (Not shown in the image) is connected to the heat dissipation support plate 100, thereby realizing the connection of the printed circuit board (not shown in the image) inside the drive structure 310 with the heat dissipation support plate 100. Figure 6 Grounding (not shown in the image) improves the anti-static capability of the vehicle display module.

[0043] Optionally, such as Figure 6As shown, the driving structure 300 includes: a flip-chip film 330 electrically connected to the printed circuit board 310 and the flexible bending circuit 400 respectively, and a protective structure 340 located between the flip-chip film 330 and the heat dissipation support plate 100. The protective structure 340 is used to cover the chip 331 on the flip-chip film.

[0044] In this way, by setting up a protective structure that covers the chip on the flip-chip film, the chip on the flip-chip film can be protected from impacts, thereby reducing the probability of damage to the chip on the flip-chip film and improving the reliability of the automotive display module.

[0045] Furthermore, such as Figure 6 As shown, the protective structure 340 is connected to the heat dissipation support plate 100. The connection between the protective structure 340 and the heat dissipation support plate 100 includes, but is not limited to, adhesive bonding. This connection between the protective structure 340 and the heat dissipation support plate 100 reduces vibration of the chip on the flip-chip film during vehicle operation, thereby improving the chip's positional stability, further reducing the probability of damage to the chip on the flip-chip film, and improving the reliability of the automotive display module.

[0046] Optionally, such as Figure 6 As shown, the display panel 200 and the heat dissipation support plate 100 are attached using thermally conductive adhesive 600. In this way, by using thermally conductive adhesive 600, the heat generated by the display panel 200 during operation can be quickly conducted to the heat dissipation support plate 100, further improving the heat dissipation performance of the vehicle display module.

[0047] In addition, such as Figure 6 As shown, the vehicle display module also includes a flexible adhesive 410, which is used to fix the flexible bending circuit 400 to the heat dissipation support plate 100, thereby improving the stability of the electrical connection between the flexible bending circuit 400 and the drive structure 300. The flexible adhesive 410 can also seal the drive structure 300 and improve the protection effect of the drive structure.

[0048] Optionally, such as Figure 6 As shown, the display panel 200 can be an OLED (Organic Light-Emitting Diode) display panel, which includes: an OLED back film layer 201, an OLED display layer 202, a polarizer layer 203, an optically transparent adhesive layer 204, and a cover plate 205.

[0049] Among them, the OLED back film layer 201 serves as the support and encapsulation layer of the display panel 200. It is usually made of flexible polymer (such as polyimide PI) or rigid glass to provide structural support and isolate oxygen and moisture, preventing the degradation of organic materials. The OLED back film layer can also have heat dissipation function, dissipating the heat generated by the display panel through metal foil or graphene materials, avoiding performance degradation of the automotive display module under high temperature environment.

[0050] The OLED display layer 202 serves as the main film layer of the display panel 200 for self-emissive imaging. The OLED display layer 202 can be made of organic light-emitting materials and electrically connected to the flexible bending circuit 400, thereby driving the structure 300 to drive the OLED display layer 202 to emit light through current. No backlight is required, and the brightness and color of each pixel can be precisely controlled through the thin-film transistor backplane to achieve high contrast and wide viewing angle.

[0051] The primary function of the polarizing layer 203 is anti-reflection. For example, by using a circular polarizer, it reduces ambient light reflection (such as glare from the dashboard inside a vehicle), improving screen visibility under strong light. Furthermore, after the polarizing layer 203 suppresses external light interference, the blacks displayed by the automotive display module are purer, thereby improving the contrast ratio of the display. The surface of the polarizing layer 203 can also be coated with an anti-glare coating to reduce driver eye strain.

[0052] The main function of the optically transparent adhesive layer 204 is to bond the cover plate 205. It can also eliminate the interfacial air layer, reduce refraction and Newton's rings, and has a high light transmittance, for example, greater than 90%. In automotive display modules, the optically transparent adhesive layer 204 can also absorb the vibration and shock of the vehicle through its low elastic modulus, protecting the brittle OLED display layer 202. The material used to make the optically transparent adhesive layer 204 can be, but is not limited to, acrylic or silicone-based materials, thereby enabling it to withstand long-term ultraviolet radiation and temperature cycling, improving the reliability of the automotive display module.

[0053] The primary function of the cover layer 205 is physical protection. The cover layer 205 can be made of, but is not limited to, chemically strengthened glass or transparent polycarbonate, thereby resisting scratches, impacts, and chemical corrosion. The surface of the cover layer 205 can also be coated with an AF (Anti-Fingerprint) coating to reduce fingerprint residue, and an AR (Anti-Reflective) coating to further reduce the reflectivity of the display panel and improve the security of the automotive display module.

[0054] In addition, when the vehicle display module has touch functionality, the touch layer can be integrated with the OLE display layer to simplify the film structure, or the touch layer can be set up separately, without specific limitations.

[0055] Based on the same inventive concept, this utility model embodiment also provides a vehicle. The implementation principle of the vehicle is similar to that of the aforementioned vehicle display module. The specific implementation method of the vehicle can be found in the aforementioned vehicle display module embodiment, and the repeated parts will not be described again.

[0056] Specifically, the vehicle provided in this embodiment of the utility model, such as Figure 7 As shown, this includes: the in-vehicle display module 701 as described above. The in-vehicle display module includes, but is not limited to: instrument panel, central control screen, and passenger entertainment screen.

[0057] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A vehicle-mounted display module, characterized in that, include: Heat dissipation support plate; The display panel is located on the heat dissipation support plate; A driving structure is located on the side of the heat dissipation support plate opposite to the display panel. The driving structure is electrically connected to the display panel through a flexible bending circuit. The driving structure includes a printed circuit board on which multiple driving chips are disposed. An electrostatic discharge (ESD) shielding layer is located on the side of the driving structure opposite to the display panel, and the ESD shielding layer's orthogonal projection on the printed circuit board covers at least a portion of the driving chip.

2. The vehicle-mounted display module as described in claim 1, characterized in that, The electrostatic discharge (ESD) protection layer includes multiple ESD protection units, and the orthographic projection of one of the ESD protection units on the printed circuit board covers one of the driver chips.

3. The vehicle-mounted display module as described in claim 1, characterized in that, The heat dissipation support plate has a groove, and the driving structure is located in the groove.

4. The vehicle-mounted display module as described in claim 3, characterized in that, Waterproof adhesive is used to fill the space between the side of the printed circuit board facing the heat dissipation support plate and the heat dissipation support plate.

5. The vehicle-mounted display module as described in claim 3, characterized in that, The surface of the driving structure facing away from the display panel is flush with the surface of the heat dissipation support plate facing away from the display panel.

6. The vehicle-mounted display module as described in claim 5, characterized in that, The vehicle display module further includes: an insulating layer located on the side of the electrostatic protective layer opposite to the display panel and a conductive layer located on the side of the insulating layer opposite to the display panel, wherein the orthographic projection of the conductive layer on the heat dissipation support plate covers the groove.

7. The vehicle-mounted display module as described in claim 6, characterized in that, The heat dissipation support plate is made of conductive material, and the ground terminal of the printed circuit board is electrically connected to the heat dissipation support plate through the conductive layer.

8. The vehicle-mounted display module as described in claim 6, characterized in that, The vehicle display module also includes a waterproof layer located on the side of the conductive layer opposite to the heat dissipation support plate.

9. The vehicle-mounted display module as described in any one of claims 1-8, characterized in that, The display panel and the heat dissipation support plate are attached together with thermally conductive adhesive.

10. The vehicle-mounted display module as described in any one of claims 1-8, characterized in that, The driving structure includes: a flip-chip film electrically connected to the printed circuit board and the flexible bending circuit respectively, and a protective structure located between the flip-chip film and the heat dissipation support plate, the protective structure being used to cover the chip on the flip-chip film.

11. The vehicle-mounted display module as described in claim 10, characterized in that, The protective structure is connected to the heat dissipation support plate.

12. A vehicle, characterized in that, Including the vehicle display module as described in any one of claims 1-11.

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