Display windows and vehicles

Abstract

A display car window and a vehicle are provided. The display car window includes a car window glass (100) and at least one projection device. The at least one projection device is configured to generate at least one projection light beam and correspondingly project the at least one projection light beam to at least one projection area of ​​the car window glass (100) to correspondingly form at least one projection image, where the projection light beam comprises at least 90% S-polarized light. The at least one projection light beam comprises a first projection light beam (S1), and the at least one projection area comprises a first projection area (A1). The first projection light beam (S1) forms a first projection image (P1) after being projected to the first projection area (A1) at a first incidence angle (θ1), and the first projection area (A1) has a first reflectance of at least 25% for the first projection light beam (S1) projected at the first incidence angle (θ1). The display car window has various functions.

Description

Technical Field

[0001] Reference to Related Applications This application claims the priority of Chinese Patent Application No. 202111102031.4, filed on September 18, 2021, with the invention title of "Vehicle Window and Vehicle for Display", and all its contents are incorporated herein by reference.

[0002] The present invention relates to the field of vehicle technology, and in particular, to a vehicle window for display and a vehicle.

Background Art

[0003] Conventional vehicle windows have a single function of blocking wind and cannot meet the usage needs of users.

Summary of the Invention

[0004] An object of the present invention is to provide a vehicle window for display and a vehicle to solve the above technical problems.

[0005] The present invention provides a vehicle window for display. The vehicle window for display includes a window glass and at least one projection device. The at least one projection device is configured to generate at least one projection light beam and project at least one projection light beam corresponding to at least one projection area of the window glass to correspondingly form at least one projection image. The projection light beam includes at least 90% of S-polarized light. The at least one projection light beam includes a first projection light beam, the at least one projection area includes a first projection area, the first projection light beam forms a first projection image after being projected onto the first projection area at a first incident angle, and the first projection area has a first reflectivity of at least 25% with respect to the first projection light beam projected at the first incident angle.

[0006] The range of the first incident angle is 53° to 67°, and the projection distance of the first projection image is 0.5 meter to 3 meters.

[0007] The first projected image has a horizontal viewing angle of 6° to 15° and a vertical viewing angle of 2° to 10°.

[0008] The at least one projection light beam includes a second projection light beam, the at least one projection area includes a second projection area, the second projection light beam forms a second projected image after being projected onto the second projection area at a second incidence angle, the second projection area has a second reflectance of at least 12% for the second projection light beam projected at the second incidence angle, and the first projection area and the second projection area are spaced apart.

[0009] The minimum horizontal distance between the first projection area and the second projection area is 100 mm to 400 mm.

[0010] The first angle of incidence is not equal to the second angle of incidence, and the first reflectivity is greater than the second reflectivity.

[0011] The second incident angle ranges from 53° to 67°, and the projection distance of the second projected image ranges from 2 meters to 100 meters.

[0012] The vehicle window glass includes a glass layer and a reflection-enhancing coating, the reflection-enhancing coating being provided on the glass layer and covering at least the first projection area.

[0013] The glass layer is a single sheet of tempered glass having an outer surface facing the outside of the vehicle and an inner surface facing the inside of the vehicle, and the enhanced reflection coating is provided on the inner surface.

[0014] The glass layer is a laminated glass, the glass layer including a first glass sublayer, a second polymer sublayer, and a second glass sublayer, the first glass sublayer, the second polymer sublayer, and the second glass sublayer being arranged in sequence to form the laminated glass, the first glass sublayer having opposing first and second surfaces, the second glass sublayer having opposing third and fourth surfaces, the second polymer sublayer being arranged adjacent to the second and third surfaces, and a reflective coating being provided on the second surface, at least one surface of the second polymer sublayer, the third surface, or the fourth surface.

[0015] The second projection area is not covered by the enhanced reflection coating.

[0016] The second projection area is covered with a reflective coating, the first angle of incidence is greater than the second angle of incidence, and the reflectance of the reflective coating for the first projection light ray projected at the first angle of incidence is greater than the reflectance of the reflective coating for the second projection light ray projected at the second angle of incidence.

[0017] The second projection area is covered with a reflective coating, the first angle of incidence is equal to the second angle of incidence, a proportion of S-polarized light in the first projected light beam is greater than a proportion of S-polarized light in the second projected light beam, and the reflectance of the reflective coating for the first projected light beam projected at the first angle of incidence is greater than the reflectance of the reflective coating for the second projected light beam projected at the second angle of incidence.

[0018] The reflection-enhancing film includes at least one high-refractive index layer and at least one low-refractive index layer, which are alternately stacked, with the high-refractive index layer having a refractive index of 1.8 or more and the low-refractive index layer having a refractive index of 1.6 or less.

[0019] The total thickness of the at least one low refractive index layer is greater than the total thickness of the at least one high refractive index layer.

[0020] The total thickness of at least one high refractive index layer is 10 nm to 50 nm, and the thickness of any one low refractive index layer is 70 nm or less.

[0021] The total thickness of at least one high refractive index layer is 10 nm to 20 nm, the thickness of any one high refractive index layer is 15 nm or less, and the thickness of any one low refractive index layer is 50 nm or less.

[0022] The present invention provides a vehicle, comprising a vehicle body and the above-mentioned display vehicle window, the vehicle window glass being attached to the vehicle body, and the projection device being disposed within the vehicle body.

[0023] The at least one projection area includes a first projection area and a second projection area, the first projection area corresponding to a passenger seat viewing area of ​​the vehicle, and the second projection area corresponding to a driver seat viewing area of ​​the vehicle.

[0024] In summary, the present application improves the reflectance for the first projection light beam, improves the brightness of the first projection image, and improves the quality of the first projection image without improving the light emission intensity of the projection device by arranging the first projection area to have a first reflectance of at least 25% for the first projection light beam projected at a first incident angle. This solves the technical problem that in the conventional display car window, the brightness of the first projection image cannot be significantly improved without improving the light emission power of the projection device, limiting the use of the display car window, and avoids the need to improve the light emission intensity of the light source of the projection device. If the light emission intensity of the light source of the projection device is improved, it becomes necessary to increase the power and volume ratio of the assembly such as the heat dissipation system and the light source system of the projection device, which increases the difficulty of the spatial design of the projection device, and further causes a technical problem of increasing the risk of product failure and causing accidents. Furthermore, the car window glass of the present application can form at least one projection image, and thus has various functions, and not only has the function of blocking wind, but can also display at least one projection image, thereby increasing the use value of the car window glass. [Brief description of the drawings]

[0025] In order to more clearly describe the technical solutions of the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings by these drawings without creative efforts. [Figure 1] 4 is a schematic diagram showing a cross-sectional structure when a first projection light beam is incident on a vehicle window glass according to an embodiment of the present invention. FIG. [Diagram 2]FIG. 4 is a schematic diagram showing a cross-sectional structure when a second projection light beam is incident on a car window glass according to an embodiment of the present invention. [Diagram 3] 1 is a schematic diagram showing a structure of a vehicle window glass according to an embodiment of the present invention as viewed from above. [Figure 4] FIG. 4 is a schematic diagram showing a cross-sectional structure of the vehicle window glass shown in FIG. [Diagram 5] This is a schematic diagram showing the structure of another car window glass as seen from above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments that a person skilled in the art can obtain without creative efforts belong to the protection scope of the present invention.

[0027] The present invention provides a vehicle including a vehicle body and a display window. A vehicle window glass 100 is attached to the vehicle body, and a projection device is disposed inside the vehicle body. The display window will be described below.

[0028] 1, the display car window includes a car window glass 100 and at least one projection device. The at least one projection device is configured to generate at least one projection light beam, and correspondingly project the at least one projection light beam onto at least one projection area of ​​the car window glass 100 to correspondingly form at least one projection image, where the projection light beam contains at least 90% S-polarized light.

[0029] The at least one projection light beam includes a first projection light beam S1, and the at least one projection area includes a first projection area A1. The first projection light beam S1 forms a first projection image P1 after being projected onto the first projection area A1 at a first incidence angle θ1, and the first projection area A1 has a first reflectance of at least 25% for the first projection light beam S1 projected at the first incidence angle θ1. As can be understood, the at least one projection device can generate one projection light beam or multiple projection light beams. The first incidence angle θ1 is an angle between the first projection light beam S1 and a normal line of the first projection area A1 at the center point of the first projection area A1. The first reflectance may be at least 30%, at least 35%, at least 40%, at least 50%, etc., and the present application does not specifically limit the specific value of the first reflectance.

[0030] In the present application, the first projection area A1 is arranged to have a first reflectance of at least 25% for the first projection light S1 projected at the first incident angle θ1, thereby improving the reflectance for the first projection light S1, improving the brightness of the first projection image P1, and improving the quality of the first projection image P1 without improving the light emission intensity of the projection device. This solves the technical problem that in the conventional display car window, the brightness of the first projection image P1 cannot be significantly improved without improving the light emission power of the projection device, limiting the use of the display car window, and avoids the need to improve the light emission intensity of the light source of the projection device. If the light emission intensity of the light source of the projection device is improved, it becomes necessary to increase the power and volume ratio of the assembly such as the heat dissipation system and the light source system of the projection device, which increases the difficulty of the spatial design of the projection device, and further causes the technical problem of increasing the risk of product failure and causing accidents.

[0031] Furthermore, the car window glass 100 of the present application can form at least one projected image, thereby having various functions, and not only has the function of blocking wind, but can also display at least one projected image, thereby increasing the value of the car window glass 100 in use.

[0032] In one specific embodiment, the first projection area A1 corresponds to the viewing area of ​​the passenger seat of the vehicle. In the present application, the brightness of the first projection image P1 in the viewing area of ​​the passenger seat can be improved and the quality of the first projection image P1 in the viewing area of ​​the passenger seat can be improved without improving the luminous intensity of the projection device and without using an assembly such as a light source system having a larger volume. In one specific embodiment, the range of the first incidence angle θ1 is 53° to 67°, and the projection distance of the first projection image P1 is 0.5 meters to 3 meters. This projection distance of the first projection image P1 allows the viewer to see the first projection image P1 relatively clearly. The specific value of the first incidence angle θ1 is related to the specific position of the first projection image P1.

[0033] In one specific embodiment, the first projection image P1 has a horizontal viewing angle of 6° to 15° and a vertical viewing angle of 2° to 10°. Due to the horizontal viewing angle and the vertical viewing angle of the first projection image P1, the first projection image P1 can be displayed in a relatively wide range, and the first projection image P1 has high definition.

[0034] Referring to FIG. 2, in one specific embodiment, the at least one projected light beam includes a second projected light beam S2, and the at least one projected area includes a second projected area A2. The second projected light beam S2 forms a second projected image P2 after being projected to the second projected area A2 at a second incident angle θ2, and the second projected area A2 has a second reflectance of at least 12% for the second projected light beam S2 projected at the second incident angle θ2. The first projected area A1 and the second projected area A2 are disposed apart from each other. As can be understood, the second incident angle θ2 is the angle between the second projected light beam S2 and the normal of the second projected area A2 at the center point of the second projected area A2. The second reflectance may be at least 20%, at least 30%, at least 35%, at least 40%, at least 50%, etc., and the present application does not specifically limit the specific value of the second reflectance.

[0035] In the present application, by arranging the second projection area A2 to have a second reflectance of at least 12% for the second projection light ray S2 projected at the second incident angle θ2, the reflectance for the second projection light ray S2 is improved without improving the light emission intensity of the projection device, thereby improving the brightness of the second projection image P2 and improving the image quality of the second projection image P2.

[0036] That is, in the present application, a first projection image P1 can be formed in the first projection area A1 of the car window glass 100 by projecting a first projection light beam S1 onto the first projection area A1, and a second projection image P2 can be formed in the second projection area A2 by projecting a second projection light beam S2 onto the second projection area A2 of the car window glass 100, so that the car window glass 100 can display two projection images, thereby improving the use value of the car window glass 100. Furthermore, since the first projection image P1 and the second projection image P2 are arranged apart from each other, the first projection image P1 and the second projection image P2 do not affect each other, and the first projection image P1 and the second projection image P2 are displayed separately, which can improve the clarity of the first projection image P1 and the second projection image P2.

[0037] In one specific embodiment, the second projection area A2 corresponds to a viewing area of ​​a driver's seat of a vehicle. In the present application, the brightness of the second projection image P2 of the viewing area of ​​the driver's seat can be improved and the quality of the second projection image P2 of the viewing area of ​​the driver's seat can be improved without increasing the luminous intensity of the projection device and without using an assembly such as a light source system with a larger volume.

[0038] As can be seen, the first projection area A1 corresponds to the passenger's viewing area and mainly displays entertainment video information such as videos, games, etc. The second projection area A2 corresponds to a head-up display (HUD) in the driver's viewing area, such as a windshield-head-up display (W-HUD) or an augmented reality head-up display (AR-HUD), and mainly displays vehicle driving information, including instruments, navigation, and some Advanced Driver-Assistance Systems (ADAS) information.

[0039] In other words, the car window glass 100 of the present application can display entertainment video information in the passenger seat viewing area and can display vehicle driving information in the driver seat viewing area. That is, the entertainment video information displayed in the passenger seat viewing area of ​​the present application and the driving information displayed in the driver seat viewing area can be displayed simultaneously, or either one of them can be displayed.

[0040] 3, in one specific embodiment, the minimum horizontal distance WA between the first projection area A1 and the second projection area A2 is 100mm to 400mm. The above distance between the first projection area A1 and the second projection area A2 can ensure that the first projection image P1 and the second projection image P2 do not affect each other, and the first projection image P1 and the second projection image P2 can be completely displayed on the car window glass 100.

[0041] In one specific embodiment, the first angle of incidence θ1 is not equal to the second angle of incidence θ2, and the first reflectivity is greater than the second reflectivity.

[0042] In the present application, by disposing the first incident angle θ1 not equal to the second incident angle θ2, the first projected light beam S1 and the second projected light beam S2 may be shifted, and the first projected image P1 and the second projected image P2 may be shifted, so that the first projected image P1 and the second projected image P2 do not affect each other. Furthermore, since the first reflectance of the present application is greater than the second reflectance, the brightness of the first projected image P1 can be greater than the brightness of the second projected image P2. That is, the brightness of the entertainment video information can be greater than the brightness of the vehicle driving information.

[0043] In one specific embodiment, the second incident angle θ2 is in the range of 53° to 67°, and the projection distance of the second projection image P2 is 2 meters to 100 meters. This projection distance of the second projection image P2 allows the viewer to see the second projection image P2 relatively clearly. The specific value of the second incident angle θ2 is related to the specific position of the second projection image P2.

[0044] Figures 1, 2 and 4, specifically, the first projected light beam S1 is incident on the first projection area A1 at a first incident angle θ1 to form a first projected image P1 with a projection distance L1, and the second projected light beam S2 is incident on the second projection area A2 at a second incident angle θ2 to form a second projected image P2 with a projection distance L2. The interlayer has a wedge angle α of 0.2 mrad to 0.8 mrad, the projection distance L1 is 0.5 meters to 3 meters, L2 is 2 meters to 100 meters, and θ2<θ1. The projection area of ​​the first projected light beam S1 on the glass surface is the first projection area A1, and the projection area of ​​the second projected light beam S2 on the glass surface is the second projection area A2. To prevent the projected images from affecting each other, the minimum horizontal distance WA between the first projection area A1 and the second projection area A2 is 100 mm to 400 mm, and the minimum horizontal spacing WS between the first projection image P1 and the second projection image P2 is 50 mm to 600 mm.

[0045] Referring to FIG. 5, it can be seen that the car window glass 100 includes a see-through area 110 and a functional area 120, the see-through area 110 is disposed on one side of the functional area 120, and the first projection area A1 and the functional area 120 at least partially overlap, or the first projection area A1 and the functional area 120 are disposed apart. Optionally, when the first projection area A1 and the functional area 120 at least partially overlap, the size of the overlapping part between the first projection area A1 and the functional area 120 is 0 mm to 30 mm. When the first projection area A1 and the functional area 120 are disposed apart, the distance between the first projection area A1 and the functional area 120 is 0 mm to 200 mm. The visible light transmittance of the see-through area 110 is 10% to 95%, and the visible light transmittance of the functional area 120 is less than 10%, preferably 5% or less, and more preferably 1% or less. FIG. 5 , the functional area 120 surrounds the see-through area 110. The closest distance HL between the lower edge of the first projection area A1 and the functional area 120 is −30 mm to 200 mm (−30 mm to 0 mm means that the lower edge of the first projection area A1 and the bathochromic shielding layer overlap). A bathochromic shielding layer is provided in functional area 120 . The closest distance between the edge of the first projection area A1 near the edge of the laminated glass and the bathochromic shielding layer HV teeth HV The lower edge of the second projection area A2 has a horizontal length greater than 200 mm and is less than 0.15 mm. 2 It has a larger area.

[0046] 1 and 2, in one specific embodiment, the car window glass 100 includes a glass layer 10 and an enhanced reflection film 20, the enhanced reflection film 20 is provided on the glass layer 10, and the enhanced reflection film 20 covers at least the first projection area A1. As can be seen, the enhanced reflection film 20 has a strong reflection effect on the first projection light beam S1 (S-polarized light) projected on the first projection area A1, thereby increasing the reflectance for polarized light having a first incident angle θ1 of 53° to 67° to at least 25% or more, and even to 40% or more. The enhanced reflection film 20 has a reflectance Rs of 25% or more for S-polarized light having a first incident angle θ1 of 53° to 67°, and a visible light reflectance RL of 16% or less.

[0047] In the present application, by disposing an enhanced reflection film 20 on the glass layer 10, the reflectance for the first projection light ray S1 is improved, the brightness of the first projection image P1 is improved, and the quality of the first projection image P1 is improved, without improving the light emission intensity of the projection device.

[0048] In one specific embodiment, the second projection area A2 is not covered by the enhanced reflection film 20. As can be seen, the position of the glass layer 10 corresponding to the driver's seat viewing area is not covered by the enhanced reflection film 20. In this way, the thickness and design difficulty of the car window glass 100 can be reduced.

[0049] In one specific embodiment, the second projection area A2 is covered with the enhanced reflection film 20, the first incident angle θ1 is larger than the second incident angle θ2, and the reflectance of the enhanced reflection film 20 for the first projection light beam S1 projected at the first incident angle θ1 is larger than the reflectance of the enhanced reflection film 20 for the second projection light beam S2 projected at the second incident angle θ2. As can be seen, both the first projection area A1 and the second projection area A2 are covered with the enhanced reflection film 20. In addition, the enhanced reflection film 20 has a strong reflection effect on the second projection light beam S2 (S-polarized light) projected on the second projection area A2. The enhanced reflection film 20 has a reflectance Rs of 25% or more for S-polarized light with an incident angle of 53° to 67°, but a visible light reflectance RL of 16% or less.

[0050] In the present application, by disposing an enhanced reflection film 20 on the glass layer 10, the reflectance for the first projection light beam S1 and the second projection light beam S2 is improved without increasing the light emission intensity of the projection device, thereby improving the brightness of the first projection image P1 and the second projection image P2, and improving the quality of the first projection image P1 and the second projection image P2.

[0051] As can be seen, the reflectance of the enhanced reflection coating 20 for S-polarized light increases as the incident angle increases. In the present application, by setting the first incident angle θ1 to be greater than the second incident angle θ2, the reflectance of the enhanced reflection coating 20 for the first projected light beam S1 projected at the first incident angle θ1 becomes greater than the reflectance of the enhanced reflection coating 20 for the second projected light beam S2 projected at the second incident angle θ2, and therefore the brightness of the first projected image P1 formed by the reflection of the first projected light beam S1 becomes greater than the brightness of the second projected image P2 formed by the reflection of the second projected light beam S2, so that the first projected image P1 is displayed more clearly. That is, the first projected image P1 displaying entertainment video information can be displayed more clearly.

[0052] In one specific embodiment, the second projection area A2 is covered by a high-reflection coating 20, the first incident angle θ1 is equal to the second incident angle θ2, the proportion of S-polarized light in the first projection light ray S1 is greater than the proportion of S-polarized light in the second projection light ray S2, and the reflectivity of the high-reflection coating 20 for the first projection light ray S1 projected at the first incident angle θ1 is greater than the reflectivity of the high-reflection coating 20 for the second projection light ray projected at the second incident angle θ2.

[0053] As can be seen, the reflectance of the enhanced reflection coating 20 for S-polarized light increases as the proportion of S-polarized light increases. In the present application, by setting the first incident angle θ1 equal to the second incident angle θ2 and setting the proportion of S-polarized light in the first projected light beam S1 to be greater than the proportion of S-polarized light in the second projected light beam S2, the brightness of the first projected image P1 formed by reflection of the first projected light beam S1 is greater than the brightness of the second projected image P2 formed by reflection of the second projected light beam S2, so that the first projected image P1 is displayed more clearly. That is, the first projected image P1 displaying entertainment video information can be displayed more clearly.

[0054] In one specific embodiment, the glass layer 10 is a single piece of tempered glass, which has an outer surface facing the outside of the vehicle and an inner surface facing the inside of the vehicle, and the enhanced reflection film 20 is provided on the inner surface. In this embodiment, the glass layer 10 has a first surface 210 and a second surface 220 facing back to back, the first surface 210 facing the outside of the vehicle as the outer surface, and the second surface 220 facing the inside of the vehicle as the inner surface. The enhanced reflection film 20 is provided on the second surface 220. When the car window glass 100 is installed in a vehicle, the single piece of tempered glass is usually curved physically tempered glass, and of course, it may be curved chemically tempered glass, or even curved injection molded polycarbonate (PC) glass. The thickness of the single piece of tempered glass is 2.0 mm to 6.0 mm, and the visible light transmittance of the single piece of tempered glass is 10% to 95%. Of course, the thickness of the glass layer 10 of the present application is not limited to the above thickness, and may be other thicknesses.

[0055] 1 and 2, in one specific embodiment, the glass layer 10 is a laminated glass, and the glass layer 10 includes a first glass sublayer 101, a second polymer sublayer 102, and a second glass sublayer 103, which are arranged in sequence to form the laminated glass. The first glass sublayer 101 has a first surface 210 and a second surface 220 facing each other, the second glass sublayer 103 has a third surface 230 and a fourth surface 240 facing each other, and the second polymer sublayer 102 is arranged adjacent to the second surface 220 and the third surface 230. The reflection-enhancing coating 20 is provided on the second surface 220, at least one surface of the second polymer sublayer 102, the third surface 230, or the fourth surface 240. As can be seen, laminated glass has a visible light transmittance of 10% to 95%.

[0056] As can be seen, the second polymer sub-layer 102 is a wedge-shaped interlayer used to correct double images between the reflected image of the enhanced reflection coating 20 and the reflected image of the first surface 210, the second surface 220, the third surface 230, or the fourth surface 240, and the wedge angle α is 0.2 mrad to 0.8 mrad.

[0057] As can be seen, the thickness of the first glass sub-layer 101 can be 0.7-4.0 mm, such as 3.0 mm, 2.1 mm, 1.8 mm, or 1.6 mm. The thickness of the second glass sub-layer 103 can be 0.7-4.0 mm, such as 2.1 mm, 1.8 mm, 1.6 mm, 1.1 mm, 0.7 mm. Preferably, the thickness of the second glass sub-layer 103 is smaller than the thickness of the first glass sub-layer 101, so that the strength requirements of the car window glass 100 can be met while the weight reduction requirements of the thin laminated glass can be achieved. Optionally, the thickness of the second polymer sub-layer 102 is 0.38 mm-1.5 mm.

[0058] The first glass sub-layer 101 and the second glass sub-layer 103 are one or two selected from physically strengthened glass, chemically strengthened glass, and injection-molded PC glass. For example, the first glass sub-layer 101 and the second glass sub-layer 103 are both physically strengthened glass, or both chemically strengthened glass, or both injection-molded PC glass, or one is physically strengthened glass and the other is chemically strengthened glass, or one is physically strengthened glass and the other is injection-molded PC glass, or one is chemically strengthened glass and the other is injection-molded PC glass. When the car window glass 100 is installed in a vehicle, the first surface 210 faces the outside of the vehicle, and the fourth surface 240 faces the inside of the vehicle. The first glass sub-layer 101 or the second glass sub-layer 103 may be transparent glass, or colored glass such as green glass or gray glass.

[0059] The second polymer sublayer 102 is used to bond the first glass sublayer 101 and the second glass sublayer 103 together to form a laminated glass. The second polymer sublayer 102 can be selected from polyvinyl chloride (PVC), polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), ionic polymer film (SGP), and the like. Of course, the second polymer sublayer 102 may have other functions. For example, the second polymer sublayer 102 may have a sun protection function or a heat insulation function due to the addition of an infrared absorbing agent. As another example, the second polymer sublayer 102 may have an ultraviolet blocking function due to the addition of an ultraviolet absorbing agent. As yet another example, the second polymer sublayer 102 may have a sound insulation function due to the addition of more plasticizer. The second polymer sublayer 102 may be transparent, such as clear PVB, or colored, such as gray PVB.

[0060] Optionally, the enhanced reflection coating 20 is disposed on the second surface 220. In this way, the enhanced reflection coating 20 is disposed between the first glass sub-layer 101 and the second polymer sub-layer 102, which does not directly contact with the environment, improving the flexibility of the combination of laminated glass products and meeting the different needs of more vehicle models.

[0061] Optionally, the enhanced reflective coating 20 can be disposed on at least one surface of the second polymer sublayer 102. For example, the enhanced reflective coating 20 can be disposed on a surface of the second polymer sublayer 102 facing the first glass sublayer 101 or on a surface of the second polymer sublayer 102 facing the second glass sublayer 103.

[0062] Optionally, the enhanced reflection film 20 can be disposed on the third surface 230. In this way, the enhanced reflection film 20 is disposed between the second glass sub-layer 103 and the second polymer sub-layer 102, without direct contact with the environment, improving the flexibility of the combination of laminated glass products and meeting the different needs of more vehicle models.

[0063] Optionally, as shown in Figures 1 and 2, the enhanced reflection coating 20 is disposed on the fourth surface 240. In this way, the projected light beam reaches the enhanced reflection coating 20 first, and the reflectance of the car window glass 100 to the projected light beam can be maximized.

[0064] In a specific embodiment, the enhanced reflection film 20 has a single-layer structure or a multi-layer structure. The single-layer or multi-layer enhanced reflection film 20 can adjust the thickness of the enhanced reflection film 20 and adjust the reflective effect of the enhanced reflection film 20 on the projected light. The materials of the single-layer or multi-layer enhanced reflection film 20 can be the same or different.

[0065] In one specific embodiment, the reflection-enhancing film 20 includes at least one high refractive index layer and at least one low refractive index layer, and the at least one high refractive index layer and the at least one low refractive index layer are alternately stacked. For example, one stack structure (high refractive index layer / low refractive index layer), two stack structures (high refractive index layer / low refractive index layer / high refractive index layer / low refractive index layer), or three stack structures (high refractive index layer / low refractive index layer / high refractive index layer / low refractive index layer / high refractive index layer / low refractive index layer) are arranged. The high refractive index layer has a refractive index of 1.8 or more, and the low refractive index layer has a refractive index of 1.6 or less. As can be understood, the high refractive index layer may further include multiple stacked high refractive index sublayers. For example, a first high refractive index sublayer / second high refractive index sublayer / low refractive index sublayer may be arranged. rate layer The low refractive index layer may also include a plurality of stacked low refractive index sublayers. For example, the low refractive index layer may be arranged in the order of high refractive index layer / first low refractive index sublayer / second low refractive index sublayer. The material of the high refractive index layer is at least one selected from oxides and mixtures of the elements Zn, Sn, Ti, Nb, Zr, Ni, In, Al, Ce, W, Mo, Sb, and Bi, or nitrides, nitrogen oxides, and mixtures of the elements Si, Al, Zr, Y, Ce, and La. The material of the low refractive index layer is SiO 2 , Al 2 O 3and mixtures thereof. Optionally, the high refractive index layer may have a refractive index of 2.3 or more. Alternatively, the high refractive index layer furthest from the glass layer 10 may have a refractive index of 2.3 or more, and the enhanced reflection coating 20 in this embodiment is disposed on the fourth surface 240.

[0066] In one specific embodiment, the total thickness of the at least one low refractive index layer is greater than the total thickness of the at least one high refractive index layer, thus satisfying the refractive index requirement for the projection light.

[0067] In one specific embodiment, the total thickness of at least one high refractive index layer is 10 nm to 50 nm, and the thickness of any one low refractive index layer is 70 nm or less. In this way, the reflectance requirement of the reflection-enhancing film 20 is satisfied, and the reflection-enhancing film 20 can be manufactured with high efficiency. In one specific embodiment, the total thickness of at least one high refractive index layer is 10 nm to 20 nm, and the thickness of any one high refractive index layer is 15 nm or less, and the thickness of any one low refractive index layer is 50 nm or less. In this way, the reflectance requirement of the reflection-enhancing film 20 is satisfied, and the reflection-enhancing film 20 can be manufactured with high efficiency.

[0068] In summary, in the present application, the first projection image P1 is displayed in the HUD area corresponding to the passenger's seat viewing area, and the second projection image P2 is displayed in the HUD area corresponding to the driver's seat viewing area, thereby making full use of the HUD area corresponding to the driver's seat viewing area and the HUD area corresponding to the passenger's seat viewing area of ​​the car window glass 100, and when the enhanced reflection film 20 is disposed on the car window glass 100, a high-brightness, high-definition projection image can be obtained without improving the light-emitting power of the projector and disposing a relatively large volume. The first projection image P1 displays entertainment information, which includes types of information such as videos and games. The second projection image P2 displays driving information, which includes instruments, navigation, and some ADAS information.

[0069] In the present application, driving information can be clearly displayed in the HUD area corresponding to the viewing area of ​​the driver's seat, and entertainment information can be clearly displayed in the HUD area corresponding to the viewing area of ​​the passenger seat, making full use of the car window glass 100, preventing the driver from lowering his head to drive, and preventing the passenger from lowering his head to view the entertainment information.

[0070] Hereinafter, a comparison will be made between the reflectance for S-polarized light and the reflectance for visible light (380 nm to 780 nm) of a car window glass 100 in which an enhanced reflection film 20 is disposed on a laminated glass as in the present application. [Table 1]

[0071] Examples 1, 2, and 4 show that the enhanced reflection film 20 is made of one laminated structure, and Examples 3 and 5 show that the enhanced reflection film 20 is made of two laminated structures. For example, as in Example 1, a high refractive index layer may be arranged on the side of the laminated structure (high refractive index layer / low refractive index layer) farthest from the glass layer 10. For example, as in Examples 4 and 5, a low refractive index layer may be arranged on the side of the laminated structure (high refractive index layer / low refractive index layer) closest to the glass layer 10. Also, for example, as in Example 2, the high refractive index layer in the laminated structure (high refractive index layer / low refractive index layer) may include multiple high refractive index sub-layers.

[0072] As can be seen from the above, the vehicle window glass 100 having the enhanced reflection film 20 of the present application disposed thereon can significantly improve the reflectance of the vehicle window glass 100 for S-polarized light, thereby improving the clarity and brightness of the projected image.

[0073] As can be seen, the human eye's perception of color is determined by lightness and chromaticity within the CIE LAB color space. The International Commission on Illumination (CIE) 1976 defines the L * represents the lightness, and L * The value of is in the range [0,100], and a * (green-red), b *(blue-yellow) represents chromaticity, and a * The range of values ​​for is [-128,127], and b * The value range of is [-128, 127]. The above content is only a preferred embodiment of the present invention, and is not used to limit the scope of the claims of the present invention. Those skilled in the art can understand and realize the whole or part of the operation of the above embodiment, and the equivalent changes made by those skilled in the art based on the claims of the present invention still belong to the scope of coverage of the present invention.

Claims

1. A display car window, The display vehicle window comprises a vehicle window glass and at least one projection device, The at least one projection device is configured to generate at least one projection light beam and correspondingly project the at least one projection light beam onto at least one projection area of ​​the vehicle window glass to correspondingly form at least one projection image, the projection light beam comprising at least 90% S-polarized light; the at least one projection light beam includes a first projection light beam, the at least one projection area includes a first projection area, the first projection light beam forms a first projection image after being projected onto the first projection area at a first incidence angle, the first projection area has a first reflectance of at least 25% for the first projection light beam projected at the first incidence angle, the first projection area corresponds to a passenger seat viewing area, and the first projection image is used to display entertainment video information in the passenger seat viewing area; the at least one projection light beam includes a second projection light beam, the at least one projection area includes a second projection area, the second projection light beam forms a second projection image after being projected onto the second projection area at a second incidence angle, the second projection area has a second reflectance of at least 12% for the second projection light beam projected at the second incidence angle, the second projection area corresponds to a viewing area of ​​a driver's seat, and the second projection image is used to display driving information in the viewing area of ​​the driver's seat; The first projection area and the second projection area are spaced apart, and the first reflectance is greater than the second reflectance. A display vehicle window.

2. The first incident angle ranges from 53° to 67°, and the projection distance of the first projected image ranges from 0.5 meters to 3 meters.

2. The display vehicle window according to claim 1.

3. the first projected image has a horizontal viewing angle of 6° to 15° and a vertical viewing angle of 2° to 10°; 2. The display vehicle window according to claim 1.

4. The minimum horizontal distance between the first projection area and the second projection area is between 100 mm and 400 mm; and / or the first angle of incidence is not equal to the second angle of incidence; and / or The second incident angle ranges from 53° to 67°, and the projection distance of the second projected image ranges from 2 meters to 100 meters.

2. The display vehicle window according to claim 1.

5. The vehicle window glass includes a glass layer and a reflection-enhancing film, the reflection-enhancing film is provided on the glass layer, and the reflection-enhancing film covers at least the first projection area.

2. The display vehicle window according to claim 1.

6. the glass layer is a single piece of tempered glass, the single piece of tempered glass having an outer surface facing the outside of the vehicle and an inner surface facing the inside of the vehicle, and the enhanced reflection film is provided on the inner surface.

6. A car window display according to claim 5.

7. the glass layer is a laminated glass, the glass layer comprising a first glass sublayer, a second polymer sublayer, and a second glass sublayer, the first glass sublayer, the second polymer sublayer, and the second glass sublayer being arranged in sequence to form the laminated glass, the first glass sublayer having opposing first and second surfaces, the second glass sublayer having opposing third and fourth surfaces, the second polymer sublayer being arranged adjacent to the second and third surfaces, and the enhanced reflection coating being provided on the second surface, at least one surface of the second polymer sublayer, the third surface, or the fourth surface.

6. A car window display according to claim 5.

8. The second projection area is not covered by the high reflection coating.

6. A car window display according to claim 5.

9. the second projection area is covered with the enhanced reflection coating, the first angle of incidence is greater than the second angle of incidence, and a reflectance of the enhanced reflection coating for the first projection light beam projected at the first angle of incidence is greater than a reflectance of the enhanced reflection coating for the second projection light beam projected at the second angle of incidence; or the second projection area is covered with the enhanced reflection coating, the first incident angle is equal to the second incident angle, a proportion of S-polarized light in the first projection light beam is greater than a proportion of S-polarized light in the second projection light beam, and a reflectance of the enhanced reflection coating for the first projection light beam projected at the first incident angle is greater than a reflectance of the enhanced reflection coating for the second projection light beam projected at the second incident angle; 6. A car window display according to claim 5.

10. the reflection-enhancing film includes at least one high-refractive index layer and at least one low-refractive index layer, the at least one high-refractive index layer and the at least one low-refractive index layer being alternately laminated, the high-refractive index layer having a refractive index of 1.8 or more, and the low-refractive index layer having a refractive index of 1.6 or less; 6. A car window display according to claim 5.

11. The total thickness of the at least one low refractive index layer is greater than the total thickness of the at least one high refractive index layer.

11. The display vehicle window according to claim 10.

12. The total thickness of the at least one high refractive index layer is 10 nm to 50 nm, and the thickness of any one low refractive index layer is 70 nm or less, or the total thickness of the at least one high refractive index layer is 10 nm to 20 nm, the thickness of any one of the high refractive index layers is 15 nm or less, and the thickness of any one of the low refractive index layers is 50 nm or less; 11. The display vehicle window according to claim 10.

13. The vehicle window glass includes a see-through area and a functional area, the visible light transmittance of the see-through area is 10% to 95%, the visible light transmittance of the functional area is less than 10%, and the closest distance between the lower edge of the first projection area and the functional area is -30 mm to 200 mm.

2. The display vehicle window according to claim 1.

14. A vehicle, The vehicle includes a vehicle body and the display vehicle window according to any one of claims 1 to 13, the vehicle window glass being attached to the vehicle body, and the projection device being disposed within the vehicle body. A vehicle characterized by:

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