Vehicle-mounted display device

Abstract

The utility model relates to a vehicle-mounted display device, which comprises a display screen and a reflecting plate, and is characterized in that the display screen is arranged along the horizontal direction and faces upwards; the reflecting plate is obliquely arranged above the display screen, a main body of the reflecting plate is a glass substrate, one surface, close to the display screen, of the glass substrate is a first surface, an included angle between the first surface and a screen body of the display screen is an acute angle, and a metal reflecting layer is arranged on the first surface. According to the vehicle-mounted display device, an automobile driver can watch display images of the display screen without deviating from the visual angle of the front road surface in the driving process, the safety in the driving process can be improved, the display screen can be prevented from being exposed to the sun, and therefore the durability of the display screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display, and particularly relates to a vehicle-mounted display device. Background Art

[0002] At present, in order to improve the safety during driving, a display for displaying driving information (such as vehicle speed, navigation information) is arranged below the windshield of an automobile, so that a driver can view the display image on the display screen without deviating from the perspective of the front road surface during driving. However, since the area below the windshield is generally prone to being exposed to sunlight and its temperature becomes very high, for the display arranged in the area below the windshield, the film sheets such as polarizers inside it are very likely to deteriorate, resulting in insufficient durability of the display. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a vehicle-mounted display device, which can not only enable a driver to view the display image on the display screen without deviating from the perspective of the front road surface during driving, improving the safety during driving, but also prevent the display screen from being exposed to sunlight, thereby improving the durability of the display screen. The adopted technical solution is as follows:

[0004] A vehicle-mounted display device includes a display screen and a reflector. It is characterized in that: the display screen is arranged horizontally with its screen facing upward; the reflector is inclined and arranged above the display screen, the main body of the reflector is a glass substrate, the surface of the glass substrate close to the display screen is the first surface, the included angle between the first surface and the screen of the display screen is an acute angle, and a metal reflection layer is arranged on the first surface.

[0005] Generally, the display screen is a liquid crystal display screen (such as a TFT display screen), and its emitted light is polarized light.

[0006] Generally, the glass substrate is a transparent glass substrate with a thickness of 0.2 - 5 mm.

[0007] Generally, the metal reflection layer is a metal thin film such as aluminum, silver, chromium, nickel, etc., whose reflection color is not prone to color deviation, and it can be deposited on the glass substrate by a magnetron sputtering process.

[0008] The above vehicle-mounted display device is arranged under the windshield of the vehicle. The display screen can be arranged horizontally under the windshield of the vehicle, and the reflector can be arranged obliquely along the windshield above the screen of the display screen, so that the included angle between the first surface of the glass substrate and the screen of the display screen is an acute angle (such as 30-60°). Thus, the display image of the display screen can be reflected into the vehicle (towards the driver's line of sight) by the reflector, that is, a reflection mirror image is formed through the reflector. Moreover, arranging the reflector above the display screen can block the display screen so that it will not be exposed to direct sunlight, thereby improving the durability of the display.

[0009] As a preferred embodiment of the present invention, the reflectivity of the metal reflection layer does not exceed 50%. By setting the reflectivity of the metal reflection layer to not exceed 50%, the reflectivity of the metal reflection layer to external light can be further reduced (the brightness of the screen of the display screen can be increased to ensure the brightness of the image display).

[0010] As a further preferred embodiment of the present invention, the metal reflection layer is a molybdenum reflection layer. The molybdenum reflection layer can be plated on the first surface of the glass substrate by techniques such as magnetron sputtering. Since the molybdenum reflection layer has stable performance and its reflectivity is between 25% and 50%, it is the most suitable reflection film layer.

[0011] As a further preferred embodiment of the present invention, the thickness of the molybdenum reflection layer is 200-500 nanometers.

[0012] As a further preferred embodiment of the present invention, the thickness of the molybdenum reflection layer is 250-350 nanometers.

[0013] In order to improve the adhesion of the molybdenum reflection layer, as a further preferred embodiment of the present invention, a silicon oxide transition layer or an aluminum oxide transition layer is arranged between the molybdenum reflection layer and the glass substrate.

[0014] As a preferred embodiment of the present invention, an inorganic protective film with a thickness not exceeding 100 nanometers is arranged on the surface of the metal reflection layer. Generally, the inorganic protective film is a thin film of inorganic transparent materials such as silicon oxide and silicon nitride, and it can be further deposited on the metal reflection layer by the process of magnetron sputtering. The inorganic protective film mainly plays a role in protecting the metal reflection layer to prevent the metal reflection layer from being oxidized or worn. By setting the thickness of the inorganic protective film to not exceed 100 nanometers, it deviates from the visible light wavelength and has little interference effect, and will not cause color cast of the reflector.

[0015] As a further preferred solution of the present utility model, the inorganic protective film is composed of a first inorganic film, a second inorganic film and a third inorganic film laminated in sequence, and the first inorganic film covers the surface of the metal reflection layer. With the above multi-layer film structure design, the inorganic protective film not only has a protective function, but also can reduce the reflection and interference of light by the inorganic protective film, so that the reflected light is mainly reflected by the molybdenum reflection layer, further reducing the color deviation of the reflection.

[0016] As a further preferred solution of the present utility model, the first inorganic film is a silicon oxide thin film, and the thickness of the first inorganic film is 40 - 60 nanometers; the second inorganic film is a silicon nitride thin film, and the thickness of the second inorganic film is 5 - 15 nanometers; the third inorganic film is a silicon oxide thin film, and the thickness of the third inorganic film is 10 - 20 nanometers.

[0017] As a preferred solution of the present utility model, the side of the glass substrate away from the display screen is the second side, and a light-shielding layer is provided on the second side. When the in-vehicle display device is arranged under the windshield, the light-shielding layer can block external light, effectively preventing sunlight from irradiating the reflector and penetrating the glass substrate to damage the metal reflection layer, thereby prolonging the service life of the metal reflection layer.

[0018] As a further preferred solution of the present utility model, the main body of the light-shielding layer is a black ink layer or a photosensitive resin layer.

[0019] As a further preferred solution of the present utility model, the light-shielding layer further includes a transparent protective layer, and the transparent protective layer covers the outside of the black ink layer or the photosensitive resin layer. The transparent protective layer can be a transparent ink layer or a photosensitive resin layer, which is used to protect the light-shielding layer.

[0020] Compared with the prior art, the present utility model has the following advantages:

[0021] This in-vehicle display device can use the reflector to reflect the display image of the display screen into the vehicle and towards the driver's line of sight, that is, form a reflection mirror image through the reflector, and the reflector can block the display screen, so that it will not be exposed to the sun, thereby improving the durability of the display. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of an in-vehicle display device according to a preferred embodiment of the present utility model.

[0023] Figure 2 is Figure 1 a schematic structural diagram of the reflector in the shown in-vehicle display device.

[0024] Figure 3 is Figure 1Schematic diagram of the state when the in-vehicle display device shown is installed under the windshield of a vehicle. Detailed implementation

[0025] As Figures 1 - 3 shown, such an in-vehicle display device includes a display screen 1 and a reflector 2. The display screen 1 is arranged horizontally with its screen 101 facing upward. The display screen 1 is a liquid crystal display screen (such as a TFT display screen), and its emitted light is polarized light. The reflector 2 is inclined and arranged above the display screen 1. The main body of the reflector 2 is a glass substrate 21. The surface of the glass substrate 21 close to the display screen 1 is the first surface 211. The angle between the first surface 211 and the screen 101 of the display screen 1 is an acute angle (such as 30 - 60°). A metal reflection layer 22 is provided on the first surface 211, and an inorganic protective film 23 with a thickness not exceeding 100 nanometers is provided on the surface of the metal reflection layer 22.

[0026] In this embodiment, the glass substrate 21 is a transparent glass substrate with a thickness of 0.2 - 5 mm.

[0027] In this embodiment, the metal reflection layer 22 is a molybdenum reflection layer. The thickness of the molybdenum reflection layer is 200 - 500 nanometers (such as 300 nanometers), and the reflectivity of the molybdenum reflection layer is between 25% and 50%. The molybdenum reflection layer can be deposited on the glass substrate 21 by a magnetron sputtering process. Thereby, the reflectivity of the metal reflection layer 22 to external light can be further reduced (the brightness of the screen 101 of the display screen 1 can be increased to ensure the brightness of the image display).

[0028] In this embodiment, the inorganic protective film 23 is composed of a first inorganic film 231, a second inorganic film 232, and a third inorganic film 233 stacked in sequence. The first inorganic film 231 covers the surface of the metal reflection layer 22. The first inorganic film 231 is a silicon oxide thin film, and the thickness of the first inorganic film 231 is 40 - 60 nanometers. The second inorganic film 232 is a silicon nitride thin film, and the thickness of the second inorganic film 232 is 5 - 15 nanometers. The third inorganic film 233 is a silicon oxide thin film, and the thickness of the third inorganic film 233 is 10 - 20 nanometers. The inorganic protective film 23 mainly functions to protect the metal reflection layer 22 to prevent the metal reflection layer 22 from being oxidized or worn. The thickness of the inorganic protective film 23 is set to not exceed 100 nanometers. Thus, it deviates from the visible light wavelength, and the interference effect is very small, and it will not cause color cast of the reflector 2. The design of the multi-layer film structure enables the inorganic protective film 23 to not only have a protective function but also reduce the reflection and interference of the inorganic protective film 23 to light, so that the reflected light is mainly reflected by the molybdenum reflection layer, further reducing the color cast of the reflection.

[0029] In this embodiment, the side of the glass substrate 21 away from the display screen 1 is the second side 212. A light-shielding layer 24 is provided on the second side 212. The main body of the light-shielding layer 24 is a black ink layer 241, and a transparent protective layer 242 is covered outside the black ink layer 241. The transparent protective layer 242 is a transparent photosensitive resin layer, which is used to protect the light-shielding layer 24. When the in-vehicle display device is arranged under the windshield 50, the light-shielding layer 24 can block sunlight, effectively preventing sunlight from irradiating the reflector 2 and penetrating the glass substrate 21 to damage the metal reflective layer 22, thereby improving the service life of the metal reflective layer 22.

[0030] The following briefly describes the usage method of this in-vehicle display device:

[0031] Refer to Figure 3 , this in-vehicle display device is arranged under the windshield 50 of the vehicle. The display screen 1 can be arranged horizontally under the windshield 50 of the vehicle, and the reflector 2 can be arranged obliquely above the screen 101 of the display screen 1 along the windshield 50, so that the included angle between the first side 211 of the glass substrate 21 and the screen 101 of the display screen 1 is an acute angle (such as 30 - 60°). Thus, the display image of the display screen 1 can be reflected into the vehicle (towards the driver's line of sight) by the reflector 2, that is, a reflection mirror image is formed through the reflector 2. Moreover, arranging the reflector 2 above the display screen 1 can block the display screen 1, preventing it from being exposed to sunlight, thereby improving the durability of the display.

[0032] In addition, it should be noted that for the specific embodiments described in this specification, the names of their respective parts and the like can be different. Any equivalent or simple changes made according to the structure, features, and principles of the inventive concept of the utility model patent are included in the protection scope of the utility model patent. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined by this claim book, they should all belong to the protection scope of the utility model.

Claims

1. A vehicle-mounted display device, comprising a display screen and a reflective plate, characterized in that: The display screen is arranged in a horizontal direction with its screen facing upwards; the reflective plate is arranged obliquely above the display screen, the main body of the reflective plate is a glass substrate, the side of the glass substrate close to the display screen is a first side, the angle between the first side and the screen of the display screen is an acute angle, and a metal reflective layer is arranged on the first side.

2. The vehicle-mounted display device according to claim 1, characterized in that: The display screen is a liquid crystal display screen, and the emitted light is polarized light.

3. The vehicle-mounted display device according to claim 1, characterized in that: The reflectivity of the metal reflective layer does not exceed 50%.

4. The vehicle-mounted display device according to claim 3, characterized in that: The metal reflective layer is a molybdenum reflective layer, and the thickness of the molybdenum reflective layer is 200-500 nanometers.

5. The vehicle-mounted display device according to claim 4, characterized in that: A silicon oxide transition layer or an aluminum oxide transition layer is arranged between the molybdenum reflective layer and the glass substrate.

6. The vehicle-mounted display device according to claim 1, characterized in that: An inorganic protective film with a thickness not exceeding 100 nanometers is arranged on the surface of the metal reflective layer.

7. The vehicle-mounted display device according to claim 6, characterized in that: The inorganic protective film is composed of a first inorganic film, a second inorganic film and a third inorganic film stacked in sequence, and the first inorganic film covers the surface of the metal reflective layer.

8. The vehicle-mounted display device according to claim 7, characterized in that: The first inorganic film is a silicon oxide film, and the thickness of the first inorganic film is 40 to 60 nanometers; the second inorganic film is a silicon nitride film, and the thickness of the second inorganic film is 5 to 15 nanometers; the third inorganic film is a silicon oxide film, and the thickness of the third inorganic film is 10 to 20 nanometers.

9. The vehicle-mounted display device according to claim 1, characterized in that: The side of the glass substrate away from the display screen is the second side, and a light shielding layer is arranged on the second side.

10. The vehicle-mounted display device according to claim 9, characterized in that: The main body of the light-shielding layer is a black ink layer or a photosensitive resin layer; the light-shielding layer also includes a transparent protective layer, which covers the outer side of the black ink layer or the photosensitive resin layer.

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