Vehicle-mounted display module and vehicle-mounted terminal

Abstract

The utility model discloses a vehicle-mounted display module which comprises a glass cover plate provided with an upper surface and a lower surface which are oppositely arranged; the display screen is arranged on the lower surface of the glass cover plate; and the light interference film layer is arranged on the upper surface of the glass cover plate and consists of a plurality of layers of magnesium fluoride films and a plurality of layers of ytterbium oxide films, and the magnesium fluoride films and the ytterbium oxide films are alternately arranged in sequence. The vehicle-mounted display module has a relatively low reflective rate. The utility model further discloses a vehicle-mounted terminal which comprises the vehicle-mounted display module.

Description

Technical Field

[0001] The utility model relates to display technology, in particular to a vehicle-mounted display module and a vehicle-mounted terminal. Background Art

[0002] Vehicle-mounted display modules are an important part of vehicle intelligence and informatization. They not only provide functions such as vehicle information, navigation, and entertainment, but also enhance the driving experience and the technological sense of the vehicle. With the development of technology, vehicle-mounted display technology is also constantly advancing. Currently, vehicle-mounted display modules are developing in the direction of large size, high resolution, multi-screen linkage, and integration of more intelligent interaction functions. From traditional TFT-LCD, OLED, AMOLED to Mini LED, various innovative display technologies are emerging continuously, improving the display effect and user experience.

[0003] However, vehicle-mounted display modules also face some challenges in actual use. One common problem is reflection. Due to the complex light conditions inside the vehicle, especially in direct sunlight, the surface of the display module is prone to reflection, affecting the driver's line of sight and the clarity of information. Summary of the Utility Model

[0004] To solve the above deficiencies of the prior art, the utility model provides a vehicle-mounted display module with a relatively low reflectance.

[0005] The utility model also provides a vehicle-mounted terminal, including the above vehicle-mounted display module.

[0006] The technical problems to be solved by the utility model are realized through the following technical solutions:

[0007] A vehicle-mounted display module includes:

[0008] A glass cover plate having an upper surface and a lower surface disposed opposite to each other;

[0009] A display screen disposed on the lower surface of the glass cover plate;

[0010] An optical interference film layer disposed on the upper surface of the glass cover plate, composed of multiple layers of magnesium fluoride thin films and multiple layers of ytterbium oxide thin films, and the multiple layers of magnesium fluoride thin films and the multiple layers of ytterbium oxide thin films are alternately arranged in sequence.

[0011] Further, the thickness of each layer of magnesium fluoride thin film is 73 - 116 nm.

[0012] Further, the thickness of each layer of ytterbium oxide thin film is 53 - 88 nm.

[0013] Further, in the optical interference film layer, the thin film closest to the glass cover plate is a magnesium fluoride thin film, and the thin film farthest from the glass cover plate is a ytterbium oxide thin film.

[0014] Further, the optical interference film layer includes a first magnesium fluoride thin film, a first ytterbium oxide thin film, a second magnesium fluoride thin film, a second ytterbium oxide thin film, a third magnesium fluoride thin film, and a third ytterbium oxide thin film, which are sequentially disposed on the glass cover plate.

[0015] Further, the glass cover plate has a display area and a border area. The display area corresponds to the display screen, and the border area surrounds the display area; a border ink layer corresponding to the border area is further provided on the lower surface of the glass cover plate.

[0016] Further, the in-vehicle display module further includes an anti-scratch film layer, and the anti-scratch film layer is disposed on a surface of the border ink layer facing away from the glass cover plate.

[0017] Further, the anti-scratch film layer includes at least one of a silicon dioxide thin film, a silicon nitride thin film, a silicon oxynitride thin film, and a diamond-like carbon film.

[0018] Further, the display screen is an LCD display screen, an OLED display screen, or a Mini LED display screen.

[0019] An in-vehicle terminal includes the above in-vehicle display module.

[0020] The utility model has the following beneficial effects: In the in-vehicle display module of the utility model, multiple layers of magnesium fluoride thin films and multiple layers of ytterbium oxide thin films are alternately arranged in sequence on the upper surface of the glass cover plate. The refractive index of the magnesium fluoride thin film is relatively low, and the refractive index of the ytterbium oxide thin film is relatively high. When the ambient light inside the vehicle is incident on the interface between adjacent magnesium fluoride thin films and ytterbium oxide thin films, it will be reflected back. By reasonably designing the thicknesses of each layer of magnesium fluoride thin film and each layer of ytterbium oxide thin film, the optical path difference between adjacent two reflected lights satisfies 1 / 4 wavelength, and coherent cancellation occurs, achieving the purpose of reducing the reflectance and improving the display quality. Description of the Drawings

[0021] Figure 1 It is a schematic stacked structure diagram of the in-vehicle display module provided by the utility model.

[0022] Figure 2 It is a schematic stacked structure diagram of the optical interference film layer in the in-vehicle display module provided by the utility model.

[0023] Figure 3 It is a schematic front structure diagram of the in-vehicle display module provided by the utility model.

[0024] Figure 4 It is a schematic stacked structure diagram of another in-vehicle display module provided by the utility model.

[0025] Figure 5 Schematic diagram of the stacking structure of the vehicle-mounted terminal provided by the present utility model. Specific embodiments

[0026] The present utility model will be described in detail below with reference to the accompanying drawings and embodiments. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0028] In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0029] In the present utility model, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", "set", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may also be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Embodiment 1

[0031] As Figure 1 and 2 shown, a vehicle-mounted display module includes:

[0032] A glass cover plate 11 having an upper surface and a lower surface disposed opposite to each other;

[0033] A display screen 12 disposed on the lower surface of the glass cover plate 11;

[0034] The optical interference film layer 13 is disposed on the upper surface of the glass cover plate 11 and is composed of multiple layers of magnesium fluoride thin films and multiple layers of ytterbium oxide thin films, and the multiple layers of magnesium fluoride thin films and the multiple layers of ytterbium oxide thin films are alternately arranged in sequence.

[0035] In the in-vehicle display module of the present utility model, multiple layers of magnesium fluoride thin films and multiple layers of ytterbium oxide thin films are alternately arranged in sequence on the upper surface of the glass cover plate 11. The refractive index of the magnesium fluoride thin film is relatively low, and the refractive index of the ytterbium oxide thin film is relatively high. When the ambient light inside the vehicle is incident on the interface between adjacent magnesium fluoride thin films and ytterbium oxide thin films, it will be reflected back. By reasonably designing the thicknesses of the multiple layers of magnesium fluoride thin films and the multiple layers of ytterbium oxide thin films, the optical path difference between adjacent two reflected light beams satisfies 1 / 4 wavelength, and coherent cancellation occurs, so as to achieve the purpose of reducing the reflectance and improving the display quality.

[0036] Both the magnesium fluoride thin film and the ytterbium oxide thin film can be formed into films on the glass cover plate 11 in sequence by means of vapor deposition, magnetron sputtering or vacuum evaporation.

[0037] The refractive index of the magnesium fluoride thin film in the visible light band is 1.36 - 1.39, and the refractive index of the ytterbium oxide thin film in the visible light band is 1.8 - 2.0. Among them, the thickness of each layer of magnesium fluoride thin film is 73 - 116 nm, and the thickness of each layer of ytterbium oxide thin film is 53 - 88 nm.

[0038] Preferably, in the optical interference film layer 13, the thin film with the smallest distance from the glass cover plate 11 is the magnesium fluoride thin film, and the thin film with the largest distance from the glass cover plate 11 is the ytterbium oxide thin film.

[0039] In this embodiment, the optical interference film layer 13 includes a first magnesium fluoride thin film 131, a first ytterbium oxide thin film 132, a second magnesium fluoride thin film 133, a second ytterbium oxide thin film 134, a third magnesium fluoride thin film 135 and a third ytterbium oxide thin film 136 which are sequentially disposed on the glass cover plate 11. The thicknesses of the first magnesium fluoride thin film 131, the first ytterbium oxide thin film 132, the second magnesium fluoride thin film 133, the second ytterbium oxide thin film 134, the third magnesium fluoride thin film 135 and the third ytterbium oxide thin film 136 are 116 nm, 86 nm, 100 nm, 72 nm, 83 nm and 59 nm respectively.

[0040] As Figure 1 and 3 shown, the glass cover plate 11 has a display area 111 and a border area 112. The display area 111 corresponds to the display screen 12, and the border area 112 surrounds the display area 111; a border ink layer 14 corresponding to the border area 112 is further disposed on the lower surface of the glass cover plate 11.

[0041] The display screen 12 is adhesively fixed to the display area 111 of the glass cover plate 11 through an OCA optical adhesive layer 15.

[0042] The border ink layer 14 is used to provide the border main color for the vehicle-mounted display module, and at the same time plays a certain light-shielding role to prevent the light of the display screen 12 from leaking out from the border area 112 of the glass cover plate 11. The border ink layer 14 is preferably black ink, but according to different appearance requirements, it can also be white, red, blue or other colors, etc.

[0043] In this embodiment, the display screen 12 can be, but is not limited to, an LCD display screen 12, an OLED display screen 12 or a MiniLED display screen 12.

[0044] Embodiment Two

[0045] As an optimized solution of Embodiment One, in this embodiment, as Figure 4 shown, the vehicle-mounted display module further includes an anti-scratch film layer 16, and the anti-scratch film layer 16 is disposed on a surface of the border ink layer 14 facing away from the glass cover plate 11.

[0046] The vehicle-mounted display module of the present utility model forms a protection for the border ink layer 14 by disposing the anti-scratch film layer 16 on the lower surface of the border ink layer 14, so as to prevent the anti-scratch film layer from being scratched due to contact with external objects during storage, transportation and transfer before being assembled with the vehicle-mounted terminal. Once the border ink layer 14 is scratched, the adhesive force between it and the pressure-sensitive adhesive layer will decrease, and ultimately it will cause defects when it is adhesively fixed to the terminal housing through the pressure-sensitive adhesive layer.

[0047] Preferably, the anti-scratch film layer 16 can be, but is not limited to, including at least one of a silicon dioxide thin film, a silicon nitride thin film, a silicon oxynitride thin film and a diamond-like carbon thin film. The silicon dioxide thin film, the silicon nitride thin film, the silicon oxynitride thin film and the diamond-like carbon thin film all have a dense molecular structure and have properties such as high hardness and wear resistance. Among them, the diamond-like carbon thin film has a molecular structure similar to that of diamond, and its hardness is even closer to the hardness of diamond.

[0048] Embodiment Three

[0049] As Figure 5As shown in the figure, a vehicle-mounted terminal includes a terminal housing 2 and the vehicle-mounted display module 1 described in Embodiment 1 or Embodiment 2. The terminal housing 2 has a window opening 20, and the vehicle-mounted display module 1 is assembled in the window opening 20 of the terminal housing 2; a pressure-sensitive adhesive layer 3 is provided on the border ink layer 14 or the scratch-resistant film layer 16 of the vehicle-mounted display module 1, and is adhesively fixed to the terminal housing 2 located on the periphery of the window opening 20 through the pressure-sensitive adhesive layer 3.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and are not intended to limit them. Although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the embodiments of the present invention can still be modified or equivalently replaced, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle-mounted display module, characterized in that, Comprising: A glass cover plate having an upper surface and a lower surface disposed opposite to each other; A display screen disposed on the lower surface of the glass cover plate; An optical interference film layer disposed on the upper surface of the glass cover plate, composed of multiple layers of magnesium fluoride thin films and multiple layers of ytterbium oxide thin films, and the multiple layers of magnesium fluoride thin films and the multiple layers of ytterbium oxide thin films are alternately arranged in sequence.

2. The in-vehicle display module according to claim 1, wherein The thickness of each layer of magnesium fluoride thin film is 73 - 116 nm.

3. The in-vehicle display module according to claim 1, wherein The thickness of each layer of ytterbium oxide thin film is 53 - 88 nm.

4. The in-vehicle display module according to claim 1, characterized in that In the optical interference film layer, the thin film closest to the glass cover plate is a magnesium fluoride thin film, and the thin film farthest from the glass cover plate is a ytterbium oxide thin film.

5. The in-vehicle display module according to claim 1, characterized in that, The optical interference film layer includes a first magnesium fluoride thin film, a first ytterbium oxide thin film, a second magnesium fluoride thin film, a second ytterbium oxide thin film, a third magnesium fluoride thin film, and a third ytterbium oxide thin film sequentially disposed on the glass cover plate.

6. The in-vehicle display module according to claim 1, wherein The glass cover plate has a display area and a border area, the display area corresponds to the display screen, and the border area surrounds the display area; a border ink layer corresponding to the border area is further disposed on the lower surface of the glass cover plate.

7. The in-vehicle display module according to claim 6, characterized in that, The vehicle-mounted display module further includes an anti-scratch film layer, and the anti-scratch film layer is disposed on a surface of the border ink layer facing away from the glass cover plate.

8. The in-vehicle display module according to claim 7, wherein, The anti-scratch film layer includes at least one of a silicon dioxide thin film, a silicon nitride thin film, a silicon oxynitride thin film, and a diamond-like carbon thin film.

9. The in-vehicle display module according to claim 1, wherein The display screen is an LCD display screen, an OLED display screen, or a Mini LED display screen.

10. A vehicle-mounted terminal, characterized in that, Including the vehicle-mounted display module according to claim 1.

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