Laminated glass and projection system

Abstract

The application provides a laminated glass and a projection system. The laminated glass has a light transmission area and a shielding area; the visible light transmittance of the light transmission area is greater than or equal to 70%, and the visible light transmittance of the shielding area is less than or equal to 3%; at least one display area is arranged in the shielding area; the display area has a P light reflectance RLp for P polarized light with a wavelength of 380-780 nm incident at an incident angle of 65°; the display area has an S light reflectance RLs for S polarized light with a wavelength of 380-780 nm incident at an incident angle of 65°; and the ratio RLp / RLs of the P light reflectance RLp to the S light reflectance RLs is greater than 1. The laminated glass and the projection system provided by the application can meet the use requirements of drivers wearing sunglasses and eliminate the visual ghosting phenomenon of the displayed image, and the shielding layer can be used as the display background of the image display, so that the external environmental light can be better shielded, and the line of sight can be prevented from being disturbed unnecessarily.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of glass, and particularly relates to a laminated glass and a projection system. BACKGROUND

[0002] A vehicle can provide various information to a driver, such as vehicle information, road information, social media information, and even entertainment information, and the information can be generally realized by using a vehicle head-up display (HUD), an instrument panel, a central control screen, a co-driver display screen, and the like or a combination thereof to meet the display requirements of multiple forms, distances, and levels, thereby bringing a more comfortable, safe, intelligent experience and rich information to the driver.

[0003] For the display of the instrument panel and the central control screen, the driver needs to look down to observe, and the line of sight of the human eye will be temporarily away from the road surface, thereby causing a driving safety hazard. For a traditional head-up display (HUD), the HUD image is displayed in the light transmission area of the front windshield, and the environment outside the vehicle serves as the display background of the HUD image. The brightness of the environment outside the vehicle and other interfering light will affect the driver's observation of the HUD image, thereby reducing the driving safety and visual comfort. SUMMARY

[0004] In view of this, the first aspect of the present application provides a laminated glass, which has a light transmission area and a shielding area; the visible light transmittance of the light transmission area is greater than or equal to 70%, and the visible light transmittance of the shielding area is less than or equal to 3%; at least one display area is arranged in the shielding area, the display area has a P light reflectance RLp for P polarized light with a wavelength of 380 nm-780 nm incident at an incident angle of 65°, the display area has an S light reflectance RLs for S polarized light with a wavelength of 380 nm-780 nm incident at an incident angle of 65°, and the ratio RLp / RLs of the P light reflectance RLp to the S light reflectance RLs is greater than 1.

[0005] The shielding area includes a bottom shielding area located below the light transmission area, and the display area is located in the bottom shielding area.

[0006] The ratio of the total area of the display area to the area of the bottom shielding area is greater than or equal to 10%.

[0007] The ratio of the total area of the display area to the area of the bottom shielding area is 15%-110%, or 20%-105%, or 25%-100%, or 30%-95%, or 40%-90%.

[0008] wherein the ratio of the P light reflectance RLp to the S light reflectance RLs, RLp / RLs, is ≥ 1.5, or RLp / RLs is ≥ 2, or RLp / RLs is ≥ 2.5, or RLp / RLs is ≥ 3, or RLp / RLs is ≥ 4.

[0009] wherein the P light reflectance RLp is 30% to 70%, or the P light reflectance RLp is 40% to 60%.

[0010] wherein the S light reflectance RLs is ≤ 25%, or the S light reflectance RLs is ≤ 20%, or the S light reflectance RLs is ≤ 15%, or the S light reflectance RLs is ≤ 10%.

[0011] wherein the display area has a natural light reflectance RL for natural light having a wavelength of 380 nm to 780 nm incident at an angle of 65°, the natural light reflectance RL being ≤ 35%, or the natural light reflectance RL being ≤ 30%, or the natural light reflectance RL being ≤ 25%.

[0012] wherein the display area has Lab values for the reflected color of light emitted by a D65 light source incident at an angle of 65°, a being ≤ 0.5 and b being ≤ 0.5, or a being ≤ 0 and b being ≤ 0.

[0013] wherein the laminated glass comprises a first glass sheet having a first side and a second side, a second glass sheet having a third side and a fourth side, a bonding layer connecting the second side and the third side, a shading layer disposed within the shading area, and a reflective element disposed within the shading area and covering at least the display area, the shading layer being positioned between the first glass sheet and the reflective element.

[0014] wherein the material of the shading layer is selected from at least one of a dark ink, an opaque polymer film, and a light control film.

[0015] wherein the reflective element is selected from at least one of a high-low refractive index stack, a metal stack, a holographic film, and a stacked polymer film.

[0016] wherein the shading area comprises a bottom shading area positioned below the light transmissive area, the display area being positioned within the bottom shading area, the height of the reflective element being greater than or equal to the height of the shading layer within the bottom shading area, and the difference between the height of the reflective element and the height of the shading layer within the bottom shading area is h, 0 ≤ h ≤ 10 mm, or 0 ≤ h ≤ 8 mm, or 0 ≤ h ≤ 5 mm.

[0017] The shielding area includes a bottom shielding area located below the light-transmitting area, the shielding layer in the bottom shielding area is composed of a first shielding sub-layer and a second shielding sub-layer, the material of the first shielding sub-layer is dark ink, and the material of the second shielding sub-layer is an opaque polymer film or a light-adjusting film.

[0018] The laminated glass further comprises a heat insulation layer selected from at least one of a single-silver nano coating, a double-silver nano coating, a triple-silver nano coating, a quadruple-silver nano coating, an ITO nano coating, an FTO nano coating, and an infrared blocking micron coating, and the total solar energy transmittance of the laminated glass with the heat insulation layer is less than or equal to 55%.

[0019] The transparent glass sheet with a thickness of 2.1 mm has a visible light transmittance TL0, and the transparent glass sheet provided with the reflective element has a visible light transmittance TL1, TL0≥88%, and TL1≤30%.

[0020] The TL1 and the TL0 satisfy: TL1 / TL0≤0.35, or TL1 / TL0≤0.3, or TL1 / TL0≤0.25, or TL1 / TL0≤0.2, or TL1 / TL0≤0.15, or TL1 / TL0≤0.1.

[0021] The laminated glass further comprises an electric heating element and at least two busbars, the busbars are electrically connected with the electric heating element, the electric heating element is a single-silver electric heating coating, or a double-silver electric heating coating, or a triple-silver electric heating coating, or a quadruple-silver electric heating coating, or a five-silver electric heating coating, or a TCO electric heating coating, or a metal wire, or a printed silver paste wire, or a nano-silver wire, or a carbon fiber wire, or a metal mesh, or a graphene heating sheet, and the electric heating element can make the laminated glass have a heating power density of at least 400 W / m 2 .

[0022] The reflective element is a high-low refractive index stack arranged on the fourth surface, the high-low refractive index stack comprises at least one stack structure, each stack structure comprises a high refractive index layer and a low refractive index layer which are sequentially stacked, the refractive index of the high refractive index layer is greater than or equal to 1.8, and the refractive index of the low refractive index layer is less than 1.8.

[0023] The high-low refractive index stack is directly arranged on the fourth surface.

[0024] Alternatively, a shielding layer is arranged on the fourth surface, and the high-low refractive index stack is directly arranged on the surface of the shielding layer away from the fourth surface.

[0025] Or, an ultrathin substrate is arranged on the fourth surface, the high-low refractive index stack is directly arranged on the surface of the ultrathin substrate away from the fourth surface, the thickness of the ultrathin substrate is 0.05mm to 1.0mm, and the material of the ultrathin substrate is soda-lime glass, or high-aluminum glass, or lithium-aluminum glass, or borosilicate glass, or polyethylene terephthalate, or polycarbonate.

[0026] Among them, the layer closest to the fourth surface in the high-low refractive index stack is a high refractive index layer, and the layer farthest from the fourth surface in the high-low refractive index stack is a low refractive index layer; the physical thickness of the low refractive index layer is 80nm-240nm, or 90nm-200nm, or 100nm-180nm.

[0027] Among them, the high-low refractive index stack further comprises at least one reflection enhancement layer, the material of the reflection enhancement layer is selected from at least one of the single substance or alloy of Si, Ni, Cr, Al, Ti, Nb, Mo, Sn, Zn, Zr, Mg, and the total physical thickness of the reflection enhancement layer is greater than 10nm.

[0028] Among them, at least one of the reflection enhancement layers is located in at least one of the stack structures.

[0029] Among them, the reflection enhancement layer is located between the high refractive index layer and the low refractive index layer of the stack structure;

[0030] And / or, the high refractive index layer of the stack structure comprises at least two high refractive index sub-layers, and the reflection enhancement layer is located between the adjacent two high refractive index sub-layers;

[0031] And / or, the low refractive index layer of the stack structure comprises at least two low refractive index sub-layers, and the reflection enhancement layer is located between the adjacent two low refractive index sub-layers.

[0032] Among them, the high-low refractive index stack comprises at least two stack structures, and at least one reflection enhancement layer is located between the adjacent two stack structures.

[0033] Among them, the high-low refractive index stack comprises at least two reflection enhancement layers, and the ratio of the physical thickness of the reflection enhancement layer farthest from the fourth surface to the physical thickness of the reflection enhancement layer closest to the fourth surface is greater than or equal to 2.

[0034] Among them, the reflection enhancement layer further contains at least one of sub- stoichiometric oxides, nitrides, and oxynitrides of the single substance or the alloy.

[0035] The second aspect of the present application provides a projection system, which comprises a projection device and the laminated glass provided by the first aspect of the present application, wherein the projection device is used to generate projection light, the projection light contains at least 80% of P-polarized light, and the projection light is incident into at least one display area in the shielding area at an incident angle of 38°-85°, and the display area reflects the projection light to form a display image.

[0036] The laminated glass and the projection system provided by the present application can meet the use requirements of drivers wearing sunglasses and eliminate the visual ghosting phenomenon of the display image, and can make the shielding layer as a display background of the image display, better shield external ambient light, avoid unnecessary interference of the line of sight, improve the contrast of the display image and the display background, and realize a higher color gamut, so that the image display is clearer; and the P-polarized light reflection can be enhanced while the S-polarized light reflection is reduced, the brightness of the projection display is enhanced, the energy utilization rate of the projection device is improved, the energy consumption of the projection device is reduced, the glare caused by too high projection brightness is weakened, the influence of the interference caused by the high visible light reflectivity of the dashboard reflection imaging is reduced, and thus the display effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be described below.

[0038] Figure 1 A top view schematic diagram of the laminated glass in one embodiment provided by the present application.

[0039] Figure 2 A top view schematic diagram of the laminated glass in another embodiment provided by the present application.

[0040] Figure 3 A top view schematic diagram of the laminated glass in another embodiment provided by the present application.

[0041] Figure 4 A sectional view schematic diagram of the laminated glass provided by the present application.

[0042] Figure 5 A partial sectional view schematic diagram of the shielding layer located on the third surface provided by the present application.

[0043] Figure 6 A partial sectional view schematic diagram of the shielding layer located on the fourth surface provided by the present application.

[0044] Figure 7 A partial sectional view schematic diagram of the shielding layer composed of the first shielding sub-layer and the second shielding sub-layer provided by the present application.

[0045] Figure 8 A cross-sectional view of a laminated glass with a heat insulation layer according to the present application.

[0046] Figure 9 A cross-sectional view of a laminated glass with an electric heating element according to the present application.

[0047] Figure 10 A cross-sectional view of a reflecting element with a stack structure according to the present application.

[0048] Figure 11 A cross-sectional view of a reflecting element with two stack structures according to the present application.

[0049] Figure 12 A cross-sectional view of an example of a reflecting element with a stack structure and a reflection enhancement layer according to the present application.

[0050] Figure 13 A cross-sectional view of another example of a reflecting element with a stack structure and a reflection enhancement layer according to the present application.

[0051] Figure 14 A cross-sectional view of another example of a reflecting element with a stack structure and a reflection enhancement layer according to the present application.

[0052] Figure 15 A cross-sectional view of another example of a reflecting element with a stack structure and a reflection enhancement layer according to the present application.

[0053] Explanation of reference numerals: laminated glass 10, light-transmitting region 101, shielding region 102, bottom shielding region 1021, left shielding region 1022, top shielding region 1023, right shielding region 1024, display region 103, first glass plate 11, first face 111, second face 112, adhesive layer 12, second glass plate 13, third face 131, fourth face 132, shielding layer 14, first shielding sub-layer 141, second shielding sub-layer 142, reflecting element 15, reflection enhancement layer 150, first high-refractive layer 151, first low-refractive layer 152, second high-refractive layer 153, second high-refractive lower sub-layer 1531, second high-refractive upper sub-layer 1532, second low-refractive layer 154, second low-refractive lower sub-layer 1541, second low-refractive upper sub-layer 1542, third high-refractive layer 155, third low-refractive layer 156, heat insulation layer 16, electric heating element 17, bus bar 18, projection device 20, projection light 201. DETAILED DESCRIPTION

[0054] The following are the preferred embodiments of the present application. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which are also considered within the scope of protection of the present application.

[0055] Unless otherwise stated or contradictory, the terms or phrases used in the present application have the following meanings:

[0056] In the present application, "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features.

[0057] In the present application, "one or more" refers to any one, any two or any two or more of the listed items. Among them, "several" refers to any two or more.

[0058] The value of x in the chemical formula: if it is defined, it shall be subject to the defined range. If it is not defined, it can be determined according to the stoichiometric deposition, sub-stoichiometric deposition or super-stoichiometric deposition in the magnetron sputtering process.

[0059] As shown in Figure 1 , Figure 2 and Figure 3 , the present application provides a laminated glass 10, which has a light transmission area 101 and a shielding area 102. The shielding area 102 is arranged around the circumference of the light transmission area 101, and the visible light transmittance of the light transmission area 101 is greater than or equal to 70%, so as to facilitate the observation of the outside environment by the people inside the vehicle through the light transmission area 101. The visible light transmittance of the shielding area 102 is less than or equal to 3%, so as to play a shielding, protection and overall aesthetic enhancement role; preferably, the visible light transmittance of the shielding area 102 is less than or equal to 2%, more preferably less than or equal to 1%, further less than or equal to 0.5%, and even almost equal to 0, that is, not transparent.

[0060] The shielding area 102 described in the present application is provided with at least one display area 103, which can display vehicle driving information, various patterns or play videos, etc., and can be used for various scenes such as welcoming, creating atmosphere, watching movies and office work. Optionally, it is used to display driving parameters, including vehicle speed, engine revolutions, fuel consumption, tire pressure, warning information, driving mileage, etc., and can also be used to display weather temperature, entertainment information, and can be used as dynamic navigation, night vision, real scene map, etc. The display area 103 is located in the shielding area 102, and the number of the display area 103 can be one as shown in Figure 1 , or four as shown in Figure 2 , and other numbers such as two, three or even more can be designed according to the actual product.

[0061] In Figure 1 , Figure 2 and Figure 3 , the shielding area 102 includes a bottom shielding area 1021 located below the light-transmitting area 101, a left shielding area 1022 located on the left side of the light-transmitting area 101, a top shielding area 1023 located above the light-transmitting area 101, and a right shielding area 1024 located on the right side of the light-transmitting area 101. Preferably, the display area 103 is located within the bottom shielding area 1021.

[0062] In order to improve the display effect of the display area 103 and facilitate the observation of the display area 103 by the person inside the vehicle, the ratio of the total area of the display area 103 to the area of the bottom shielding area 1021 is preferably greater than or equal to 10%. When the number of display areas 103 is greater than or equal to two, the total area of the display area 103 is equal to the sum of the areas of all display areas 103. More preferably, the ratio of the total area of the display area 103 to the area of the bottom shielding area 1021 is 15% to 110%, or 20% to 105%, or 25% to 100%, or 30% to 95%, or 40% to 90%, so that the display effect of the display area 103 and the overall aesthetics of the laminated glass 10 can be better balanced. Specifically, it can be 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100%, 105%, or 110%, etc.

[0063] In Figure 3 , the display area 103 covers the entire bottom shielding area 1021, and even the upper boundary of the display area 103 is closer to the top shielding area 1023 than the upper boundary of the bottom shielding area 1021, i.e., the ratio of the total area of the display area 103 to the area of the bottom shielding area 1021 is 100% to 110%, so as to form a through-type panoramic display effect from the A-pillar to the A-pillar.

[0064] The display area 103 described in the present application has a P light reflectivity RLp for P polarized light with a wavelength of 380nm-780nm incident at an incident angle of 65°, and has a S light reflectivity RLs for S polarized light with a wavelength of 380nm-780nm incident at an incident angle of 65°, and the ratio RLp / RLs of the P light reflectivity RLp to the S light reflectivity RLs is greater than 1, so that the reflectivity of the display area 103 for P polarized light is greater than the reflectivity of the display area 103 for S polarized light, which can not only enhance the reflection of P polarized light to realize projection display, but also reduce the reflection of S polarized light to weaken or even eliminate the reflection of the display area 103 on the instrument table, so as to avoid interfering with the view of the person in the vehicle. Preferably, the ratio RLp / RLs of the P light reflectivity RLp to the S light reflectivity RLs is greater than or equal to 1.5, which can be exemplified as 1.5, 1.8, 2.0, 2.2, 2.5, 2.8, 3.0, 3.3, 3.6, 4.0, 4.5, 5.0, 5.5, 6.0, etc., more preferably greater than or equal to 2, further preferably greater than or equal to 2.5, more further preferably greater than or equal to 3, and even greater than or equal to 4.

[0065] As shown in Figure 4 The laminated glass 10 includes a first glass plate 11, a bonding layer 12, a second glass plate 13, a shielding layer 14 and a reflective element 15, the bonding layer 12 is arranged between the first glass plate 11 and the second glass plate 13, the shielding layer 14 is arranged in the shielding area 102, the reflective element 15 is arranged in the shielding area 102 and covers at least the display area 103, and the shielding layer 14 is located between the first glass plate 11 and the reflective element 15.

[0066] The projection device 20 is used to generate a projection light 201, the projection light 201 contains at least 80% of P polarized light, the projection light 201 is incident to the display area 103 at an incident angle of 38°-85°, and the display area 103 reflects the projection light 201 to form an image that can be observed by the person in the vehicle, especially for the driver, without having to look down to observe the image, so that the driver's view is better and the line of sight is longer for observing the external situation, and at the same time, the necessary information for assisting driving can be obtained more easily, which greatly improves the driving safety, so that the traditional instrument panel can be partially replaced or even completely replaced, and even the traditional instrument panel can be cancelled. At the same time, the shielding area 102 is usually referred to as a black border area, and the present application arranges the reflective element 15 in the shielding area 102 and makes the shielding layer 14 located between the first glass plate 11 and the reflective element 15, so that the shielding layer 14 can shield the reflective element 15 in the thickness direction of the laminated glass 10, and the shielding layer 14 can be used as a display background of image display, which can better shield the external environment light, avoid unnecessary interference of the line of sight, and also improve the contrast of the displayed image and the display background and achieve a higher color gamut, so that the image display is clearer.

[0067] Specifically, the first glass sheet 11 as the outer glass sheet of the laminated glass 10 has a first surface 111 and a second surface 112, the first surface 111 is away from the adhesive layer 12 and contacts with the environment outside the vehicle, and the second surface 112 is close to the adhesive layer 12; the second glass sheet 13 as the inner glass sheet of the laminated glass 10 has a third surface 131 and a fourth surface 132, the third surface 131 is close to the adhesive layer 12, and the fourth surface 132 is away from the adhesive layer 12 and contacts with the environment inside the vehicle; the adhesive layer 12 connects the second surface 112 and the third surface 131.

[0068] The first glass sheet 11 is transparent glass or colored glass, the thickness of the first glass sheet 11 is 0.7mm-4mm, and the visible light transmittance of the first glass sheet 11 is greater than or equal to 80%. The second glass sheet 13 is transparent glass or colored glass, the thickness of the second glass sheet 13 is 0.7mm-4mm, and the visible light transmittance of the second glass sheet 13 is greater than or equal to 80%. The total iron content (calculated as Fe2O3) of the transparent glass is less than or equal to 0.1%, even less than or equal to 0.05%, further less than or equal to 0.01%, and the visible light transmittance of the transparent glass is 80%-95%; the total iron content (calculated as Fe2O3) of the colored glass is 0.1%-0.8%, preferably 0.1%-0.5%, and the visible light transmittance of the colored glass is 80%-90%. For example, the first glass sheet 11 can be transparent glass with a thickness of 2.1mm and a visible light transmittance of 89%, and the second glass sheet 13 can be green glass with a thickness of 1.6mm and a visible light transmittance of 83% or green glass with a thickness of 2.1mm and a visible light transmittance of 80%.

[0069] The adhesive layer 12 is a transparent thermoplastic polymer film or a colored thermoplastic polymer film, and the thickness of the adhesive layer 12 is 0.38mm to 2.28mm. For example, the thickness of the adhesive layer 12 can be, but is not limited to, 0.38mm, or 0.76mm, or 1.14mm, or 1.52mm, or 1.9mm, or 2.28mm, or other values between 0.38mm and 2.28mm. The material of the thermoplastic polymer film can be selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), and ionomer (SGP). When the adhesive layer 12 is a transparent thermoplastic polymer, the visible light transmittance of the transparent thermoplastic polymer is greater than or equal to 80%. For example, the visible light transmittance of the adhesive layer 12 can be, but is not limited to, 80%, or 85%, or 90%, or 95%, etc. When the adhesive layer 12 is a colored thermoplastic polymer film, the visible light transmittance of the colored thermoplastic polymer film is greater than or equal to 80%. For example, the visible light transmittance of the adhesive layer 12 can be, but is not limited to, 80%, or 85%, or 90%, etc. The colored thermoplastic polymer film can be a gray thermoplastic polymer film, a green thermoplastic polymer film, or a blue thermoplastic polymer film. For example, the adhesive layer 12 can be a single-layer structure or a multi-layer structure, and the multi-layer structure can be, for example, a double-layer structure, a triple-layer structure, a four-layer structure, a five-layer structure, etc. The adhesive layer 12 can also have other functions, such as providing at least one colored area as a shading band to reduce the interference of sunlight on the human eye, or adding an infrared absorber to have a sunscreen or heat insulation function, or adding an ultraviolet absorber to have an ultraviolet shielding function, or having a higher plasticizer content in at least one layer of the multi-layer structure to have a sound insulation function.

[0070] The material of the shielding layer 14 is selected from at least one of dark ink, an opaque polymer film, and a light control film.

[0071] The dark ink can be ceramic ink or ultraviolet ink, which is printed on the second surface 112, the third surface 131, and / or the fourth surface 132 by a process such as screen printing or inkjet printing, and forms the shielding layer 14 after curing or high-temperature sintering. The thickness of the shielding layer 14 formed by the dark ink is 5 microns to 40 microns.

[0072] The opaque polymer film can be a bulk-colored polymer film, such as adding black or brown coloring components in the polymer film manufacturing process, etc.; can be a polymer film printed with surface ink, paint or pigment, such as printing black ink, black paint or brown pigment on the surface of the polymer film, etc.; can also be a dyed or colored polymer film, such as coloring the polymer film with black or brown dye, etc.; the material of the polymer film can be polyvinyl butyral (PVB), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polycarbonate (PC), polymethyl methacrylate (PMMA), etc.; the opaque polymer film is arranged in the bonding layer 12, for example, the bonding layer 12 can be two pieces of thermoplastic polymer film, and the opaque polymer film is sandwiched between the two pieces of thermoplastic polymer film.

[0073] The light modulation film can be a polymer dispersed liquid crystal film (PDLC), a suspended particle film (SPD), an electrochromic film (EC), a dye liquid crystal film (LC), etc. The minimum visible light transmittance of the light modulation film is less than or equal to 3%, such as 3%, 2%, 1%, 0.5%, 0%. In addition, the maximum visible light transmittance of the light modulation film is set as needed, such as 10%, 20%, 30%, 50%, 70%, 80%, etc. Specifically, for example: the visible light transmittance of the light modulation film can be adjusted between 0% and 20%, can also be adjusted between 0.5% and 50%, can also be adjusted between 0% and 70%, etc. The light modulation film can meet the requirements of visible light transmittance in multiple scenarios, such as when black border display is required, the light modulation film is in an opaque state (visible light transmittance is less than or equal to 3%, or even 0%), which improves the contrast between the display image and the display background, and when no display is performed, the light modulation film is in a transparent state (visible light transmittance is greater than or equal to 70%), which realizes greater area transparency of the vehicle window glass; the light modulation film is arranged in the bonding layer 12, for example, the bonding layer 12 can be two pieces of thermoplastic polymer film, and the light modulation film is sandwiched between the two pieces of thermoplastic polymer film.

[0074] The reflective element 15 is used to increase the reflectivity of the display area 103 to P-polarized light while reducing the reflectivity of the display area 103 to S-polarized light. The reflective element 15 can be exemplified as a high-low refractive index stack, a metal stack, a holographic film, a stacked polymer film, etc. The reflective element 15 can be arranged on the second surface 112, or can be arranged between the second surface 112 and the third surface 131, or can be arranged on the third surface 131, or can be arranged on the fourth surface 132.

[0075] The reflective element 15 makes the display area 103 have a P light reflectance RLp for P polarized light with a wavelength of 380 nm-780 nm incident at an incident angle of 65°, preferably a P light reflectance RLp = 30%-70%, for example 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, and the like, more preferably a P light reflectance RLp = 40%-60%, so as to enhance the brightness of the projection display, improve the energy utilization of the projection device 20, thereby reducing the energy consumption of the projection device 20, and weaken or even eliminate the glare caused by the excessively high projection brightness of the projection device 20, which is conducive to the miniaturization and heat dissipation design of the projection device 20.

[0076] The reflective element 15 makes the display area 103 have an S light reflectance RLs for S polarized light with a wavelength of 380 nm-780 nm incident at an incident angle of 65°, preferably an S light reflectance RLs less than or equal to 25%, more preferably less than or equal to 20%, further preferably less than or equal to 15%, even less than or equal to 10%, so as to weaken or even eliminate the mirror image of the dashboard of the display area 103, avoid interfering with the field of view of the person inside the vehicle, and further weaken or even eliminate the glare caused by the excessively high projection brightness of the projection device 20, thereby improving the display effect.

[0077] In view of the fact that the reflective element 15 can improve the reflectance of the display area 103 for P polarized light while reducing the reflectance of the display area 103 for S polarized light, the reflective element 15 makes the display area 103 have a natural light reflectance RL for natural light with a wavelength of 380 nm-780 nm incident at an incident angle of 65°, preferably a natural light reflectance RL less than or equal to 35%, more preferably less than or equal to 30%, further preferably less than or equal to 25%.

[0078] In order to improve the overall aesthetics and high-grade feel of the laminated glass 10 and avoid color cast when the person inside the vehicle observes the display area 103 from inside the vehicle, the Lab value of the reflected color of the display area 103 for natural light with a wavelength of 380 nm-780 nm incident at an incident angle of 65° measured from the fourth side 132 side satisfies a≤0.5 and b≤0.5, more preferably a≤0 and b≤0. Further exemplary, a = -5 to 0 and b = -20 to 0.

[0079] The reflective element 15 can be a high-low refractive index stack, which includes at least one stack structure, each stack structure including high refractive index layers and low refractive index layers stacked in sequence, the high refractive index layers having a refractive index greater than or equal to 1.8, the low refractive index layers having a refractive index less than 1.8, the high-low refractive index stack having a physical thickness of 100 nm to 800 nm, the high refractive index layers and the low refractive index layers being deposited onto the fourth surface 132 by a physical vapor deposition process (PVD), in particular a magnetron sputtering process. The high-low refractive index stack can be composed of only one stack structure of "high refractive index layer / low refractive index layer", or can include at least two stack structures, for example two, three or four stack structures. The material of the high refractive index layers can include oxides or alloy oxides or nitrides or oxynitrides of zirconium (Zr), niobium (Nb), silicon (Si), antimony (Sb), tin (Sn), zinc (Zn), indium (In), aluminum (Al), nickel (Ni), chromium (Cr), magnesium (Mg), manganese (Mn), vanadium (V), tungsten (W), hafnium (Hf), tantalum (Ta), molybdenum (Mo), gallium (Ga), yttrium (Y), bismuth (Bi), titanium (Ti), etc., for example zinc tin oxide (ZnSnOx), titanium oxide (TiOx), niobium oxide (NbOx), silicon nitride (SiNx), silicon aluminum nitride (SiAlNx), silicon zirconium nitride (SiZrNx), etc. In order to better achieve the optical performance, mechanical performance and appearance color of the reflective element 15, which meet the comprehensive requirements of the vehicle window glass, the high refractive index layer can be a single layer structure, or a multi-layer structure including at least two high refractive index sub-layers, the difference between the refractive indices of the two adjacent high refractive index sub-layers being greater than or equal to 0.1. The material of the low refractive index layers can include oxides or alloy oxides or oxynitrides or carbides or fluorides of silicon (Si), aluminum (Al), magnesium (Mg), zirconium (Zr), etc., for example silicon oxide (SiO2), silicon aluminum oxide (SiAlOx), silicon zirconium oxide (SiZrOx), aluminum oxide (Al2O3), magnesium oxide (MgO), magnesium fluoride (MgF), etc. In order to better achieve the optical performance, mechanical performance and appearance color of the reflective element 15, which meet the comprehensive requirements of the vehicle window glass, the low refractive index layer can be a single layer structure, or a multi-layer structure including at least two low refractive index sub-layers.

[0080] The reflective element 15 can be a metal stack, the metal stack comprising at least two dielectric layers and at least one metal layer, each metal layer being located between two adjacent dielectric layers, the physical thickness of the metal stack being 100 nm to 500 nm, the metal layer and the dielectric layer can be deposited to the second surface 112 or the third surface 131 by a physical vapor deposition process (PVD), in particular a magnetron sputtering process. The number of metal layers can be exemplarily 1, 2, 3, 4 or 5, etc., the material of the metal layer is selected from at least one of silver (Ag), gold (Au), copper (Cu) and aluminum (Al), the material of the metal layer is preferably silver or silver alloy. The silver alloy is an alloy of silver and at least one of copper (Cu), gold (Au), platinum (Pt), nickel (Ni), chromium (Cr), titanium (Ti), aluminum (Al), indium (In), zinc (Zn), tin (Sn), the content of silver in the silver alloy is greater than or equal to 90%, preferably greater than or equal to 95%. The material of the dielectric layer is selected from at least one of oxides, nitrides or oxynitrides of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu, Sm. For example, it can be zinc tin oxide (ZnSnOx), aluminum-doped zinc oxide (AZO), titanium oxide (TiOx), silicon zirconium nitride (SiZrN), silicon aluminum nitride (SiALN), silicon aluminum oxide (SiAlO), etc.

[0081] The reflective element 15 can be a holographic film, the holographic (HOE) film refers to a film based on the principle of holographic action, an interference pattern is formed in the holographic film, after the projection light 201 is incident on the holographic film, diffraction occurs under the action of the interference pattern to form an image that can be observed by the person in the vehicle, selecting the holographic film is beneficial to improve the geometric design freedom of the incidence angle of the projection light 201 and is beneficial to weaken or even eliminate ghosting. Preferably, the thickness of the holographic film is preferably 100 μm to 600 μm, which can be exemplarily 100 μm, 120 μm, 150 μm, 180 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, 500 μm, 550 μm, 600 μm, etc., and more preferably 50 μm to 300 μm.

[0082] The reflective element 15 can be a multilayer polymer film, the thickness of which is preferably from 20 μm to 500 μm, specifically 20 μm, 50 μm, 80 μm, 100 μm, 120 μm, 150 μm, 180 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, 500 μm, etc., more preferably from 50 μm to 300 μm. The multilayer polymer film is composed of two resin films with different refractive indices, stacked alternately in tens, hundreds, or even thousands of layers. The resin film material can be at least one of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), syndiotactic polystyrene (sPS), polybutylene terephthalate (PBT), polycyclohexanedimethyl terephthalate (PCT), polyetherimide (PEI), and polymethacrylamide (PMI). Laminated polymer films are available on the market, for example from 3M, Toray Industries, Sekisui Chemicals, and Eastman Chemical Company.

[0083] In this application, the shielding layer 14 in the bottom shielding area 1021 is located between the first glass plate 11 and the reflective element 15. That is, the shielding layer 14 in the bottom shielding area 1021 is closer to the first surface 111 than the reflective element 15. The reflective element 15 is completely located in the bottom shielding area 1021. This allows the shielding layer 14 to both shield the reflective element 15 and prevent the reflective element 15 and other mounting accessories from being seen from outside the vehicle, and also to serve as a display background for the image formed by the reflective element 15.

[0084] exist Figure 4 In the middle, the shielding layer 14 in the bottom shielding area 1021 is directly disposed on the second surface 112, and the reflective element 15 is directly disposed on the fourth surface 132; for example Figure 5 As shown, the shielding layer 14 within the bottom shielding area 1021 is directly disposed on the third surface 131, and the reflective element 15 is directly disposed on the fourth surface 132; as Figure 6 As shown, the shielding layer 14 within the bottom shielding area 1021 is directly disposed on the fourth surface 132, and the reflective element 15 is directly disposed on the surface of the shielding layer 14 facing away from the fourth surface 132. Figure 5In some embodiments, the reflective element 15 is equal to or slightly higher than the shielding layer 14 in the bottom shielding area 1021, i.e., the height of the reflective element 15 is greater than or equal to the height of the shielding layer 14 in the bottom shielding area 1021, so as to achieve better visual effect of the laminated glass 10 after being installed on the vehicle, and considering the overall appearance, preferably the difference between the height of the reflective element 15 and the height of the shielding layer 14 in the bottom shielding area 1021 is h, 0≤h≤10mm, or 0≤h≤8mm, or 0≤h≤5mm, and specific examples can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 9.5mm, etc. Wherein, the height of the reflective element 15 and the height of the shielding layer 14 in the bottom shielding area 1021 are the heights in the direction from the bottom shielding area 1021 to the top shielding area 1023.

[0085] As shown in Figure 7 , the shielding layer 14 in the bottom shielding area 1021 is composed of a first shielding sub-layer 141 and a second shielding sub-layer 142, the material of the first shielding sub-layer 141 is dark ink, and the material of the second shielding sub-layer 142 is an opaque polymer film or a light-adjustable film, and preferably the second shielding sub-layer 142 is a light-adjustable film, which can better meet the requirements of visible light transmittance in multiple scenarios, for example, when image display is required, the light-adjustable film is in an opaque state (visible light transmittance is less than or equal to 3%, or even 0%), which improves the contrast between the displayed image and the display background, and when no display is performed, the light-adjustable film is in a transparent state (visible light transmittance is greater than or equal to 70%), which realizes greater transparency of the laminated glass 10 and improves the field of view of the vehicle interior personnel observing the environment outside the vehicle. Specifically, the first shielding sub-layer 141 is directly arranged on the second surface 112, and the second shielding sub-layer 142 is arranged in the adhesive layer 12; it can be understood that other forms can also be arranged according to actual conditions, for example, the second shielding sub-layer 142 is arranged in the adhesive layer 12, and the first shielding sub-layer 141 is directly arranged on the third surface 131, and for example, the second shielding sub-layer 142 is arranged in the adhesive layer 12, and the first shielding sub-layer 141 is directly arranged on the fourth surface 132.

[0086] As shown in Figure 8 , the laminated glass 10 described in the present application further comprises a heat insulation layer 16, which can make the laminated glass 10 have excellent heat insulation performance, thereby improving the thermal comfort of the vehicle interior environment, and preferably the total solar energy transmittance of the laminated glass 10 with the heat insulation layer 16 is less than or equal to 55%, more preferably less than or equal to 50%, or even less than or equal to ≤45%. The lower the total solar energy transmittance, the better the heat insulation performance of the laminated glass 10. The heat insulation layer 16 can be arranged on the second surface 112, or arranged in the adhesive layer 12, or arranged on the third surface 131, or arranged on the fourth surface 132; and preferably, the heat insulation layer 16 and the reflective element 15 are not located on the same surface.

[0087] The thermal insulation layer 16 can be at least one selected from a single silver nano-coating, a double silver nano-coating, a triple silver nano-coating, a quadruple silver nano-coating, an ITO nano-coating, an FTO nano-coating, and an infrared blocking micron-coating.

[0088] The single silver nano-coating, the double silver nano-coating, the triple silver nano-coating, and the quadruple silver nano-coating can be formed by a magnetron sputtering process, and their physical thicknesses are preferably 100 nm to 500 nm. The single silver nano-coating is a transparent nano-coating having one silver layer and at least two dielectric layers, the double silver nano-coating is a transparent nano-coating having two silver layers and at least three dielectric layers, the triple silver nano-coating is a transparent nano-coating having three silver layers and at least four dielectric layers, and the quadruple silver nano-coating is a transparent nano-coating having four silver layers and at least five dielectric layers. The material of the dielectric layer is selected from oxides, nitrides, or oxynitrides of at least one of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu, and Sm.

[0089] The ITO nano-coating can be formed by a magnetron sputtering process, and the physical thickness of the ITO nano-coating is preferably 100 nm to 500 nm. The ITO nano-coating is a transparent nano-coating having at least one ITO (indium tin oxide) functional layer and at least two dielectric layers, and the material of the dielectric layer is selected from oxides, nitrides, or oxynitrides of at least one of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu, and Sm. The FTO nano-coating can be formed by a chemical vapor deposition process (CVD), and the physical thickness of the FTO nano-coating is preferably 50 nm to 500 nm. The FTO nano-coating is a transparent nano-coating having at least one FTO (fluorine-doped tin oxide) functional layer.

[0090] The infrared blocking micron-coating can be formed by a sol-gel method, and the thickness of the infrared absorbing micron-coating is 5 μm to 30 μm. The infrared blocking micron-coating is a transparent micron-coating having infrared blocking nanoparticles, and the material of the infrared blocking nanoparticles can be at least one selected from ITO (indium tin oxide), FTO (fluorine-doped tin oxide), CWO (cesium-doped tungsten oxide), LaB6 (lanthanum hexaboride), and V2O5 (vanadium pentoxide). The average particle size of the infrared blocking nanoparticles is 20 nm to 100 nm.

[0091] In Figure 8In some embodiments, the heat insulation layer 16 and the reflective element 15 are not located on the same surface, and the projection of the reflective element 15 on the heat insulation layer 16 at least partially overlaps the heat insulation layer 16, and the heat insulation layer 16 is closer to the first surface 111 than the reflective element 15. This is conducive to simplifying the production process of the heat insulation layer 16 and the reflective element 15. Specifically, the heat insulation layer 16 is directly arranged on the third surface 131, and the reflective element 15 is directly arranged on the fourth surface 132. The present application can also exemplify the heat insulation layer 16 directly arranged on the second surface 112, the reflective element 15 directly arranged on the fourth surface 132, and the like.

[0092] In other embodiments, the heat insulation layer 16 and the reflective element 15 are not located on the same surface, and the reflective element 15 and the heat insulation layer 16 do not overlap each other in the thickness direction of the laminated glass 10. This can avoid the heat insulation layer 16 reflecting the projected light 201 to interfere with the image formed by the reflective element 15.

[0093] In other embodiments, the heat insulation layer 16 and the reflective element 15 are located on the same surface, and the reflective element 15 and the heat insulation layer 16 do not overlap each other. This can avoid the heat insulation layer 16 reflecting the projected light 201 to interfere with the image formed by the reflective element 15.

[0094] In other embodiments, the heat insulation layer 16 and the reflective element 15 are located on the same surface, and the projection of the reflective element 15 on the heat insulation layer 16 at least partially overlaps the heat insulation layer 16, and the heat insulation layer 16 is closer to the first surface 111 than the reflective element 15. Specifically, the heat insulation layer 16 can be arranged first, and then the reflective element 15 is continuously arranged on the partial surface of the heat insulation layer 16.

[0095] In the present application, when the projection of the reflective element 15 on the heat insulation layer 16 at least partially overlaps the heat insulation layer 16, it is preferred that the transparent glass plate with a thickness of 2.1 mm and a visible light transmittance greater than 88% provided with the reflective element 15 has a visible light transmittance less than or equal to 30%, which can also be preferably less than or equal to 25%, more preferably less than or equal to 20%, further preferably less than or equal to 15%, more further preferably less than or equal to 10%, even less than or equal to 5%, more even less than or equal to 1%. This can not only weaken or even eliminate the interference of the heat insulation layer 16 reflecting the projected light 201 to the image formed by the reflective element 15, but also save the use of the shielding layer 14 to a certain extent or even partially replace the shielding layer 14, which is conducive to reducing the manufacturing cost of the laminated glass 10.

[0096] As Figure 9As shown, the laminated glass 10 described in the present application further comprises an electric heating element 17 and at least two bus bars 18, the bus bars 18 are electrically connected with the electric heating element 17, one of the bus bars 18 is electrically connected with the positive pole of a power supply (not shown), and the other bus bar 18 is electrically connected with the negative pole of the power supply (not shown), the current of the power supply is input to the electric heating element 17 through the at least two bus bars 18, so that the electric heating element 17 generates heat to heat the laminated glass 10 to achieve the functions of defrosting, defogging, snow removal and even ice removal, and further improve the driving safety. The electric heating element 17 can be arranged on the second surface 112, the third surface 131, the fourth surface 132 or in the adhesive layer 12, and the bus bars 18 are located between the second surface 112 and the third surface 131. The voltage of the power supply described in the present application is 12V to 380V, and the electric heating element 17 can make the laminated glass 10 have a heating power density of at least 400W / m2. Exemplarily, the electric heating element 17 can make the laminated glass 10 have a heating power density of at least 800W / m2. Exemplarily, the electric heating element 17 can make the laminated glass 10 have a heating power density of at least 1000W / m2. Further exemplarily, the electric heating element 17 can make the laminated glass 10 have a heating power density of at least 2000W / m2.

[0097] The electric heating element 17 can be a single-silver electric heating coating, a double-silver electric heating coating, a triple-silver electric heating coating, a quadruple-silver electric heating coating, a quintuple-silver electric heating coating, a TCO electric heating coating, a metal wire, a printed silver paste wire, a nano-silver wire, a carbon fiber wire, a metal mesh, or a graphene heating sheet, etc. The single-silver electric heating coating, the double-silver electric heating coating, the triple-silver electric heating coating, the quadruple-silver electric heating coating, the quintuple-silver electric heating coating, and the TCO electric heating coating can be formed by a physical vapor deposition process (PVD) or a chemical vapor deposition process (CVD), and their physical thickness is preferably 100 nm to 500 nm. The single-silver electric heating coating is a transparent nano-coating with one silver layer and at least two dielectric layers, the double-silver electric heating coating is a transparent nano-coating with two silver layers and at least three dielectric layers, the triple-silver electric heating coating is a transparent nano-coating with three silver layers and at least four dielectric layers, the quadruple-silver electric heating coating is a transparent nano-coating with four silver layers and at least five dielectric layers, and the quintuple-silver electric heating coating is a transparent nano-coating with five silver layers and at least six dielectric layers. The TCO electric heating coating is a transparent nano-coating with at least one transparent conductive oxide (TCO) functional layer, the material of the TCO functional layer can be ITO (indium tin oxide), FTO (fluorine-doped tin oxide), or AZO (aluminum-doped zinc oxide), etc., and the TCO electric heating coating can also include at least one dielectric layer. The material of the dielectric layer is selected from oxides, nitrides, or oxynitrides of at least one of Zn, Ti, Si, Al, Sn, Se, Zr, Ni, In, Cr, W, Ca, Y, Nb, Cu, Sm, etc. The metal wire can be at least one of a copper wire, a tungsten wire, an aluminum wire, or a copper alloy wire, and the diameter of the metal wire is 0.01 mm-0.5 mm. The printed silver paste wire has a printed line width of 0.1 mm-1.0 mm and a printed thickness of 3 μm-20 μm. The nano-silver wire, the carbon fiber wire, the metal mesh, or the graphene heating sheet can be obtained on the market.

[0098] In Figure 9 the present application, the laminated glass 10 is additionally provided with a shielding layer 14 on the fourth surface 132, and the reflecting element 15 is arranged on the surface of the additionally provided shielding layer 14 facing away from the fourth surface 132. The additionally provided shielding layer 14 can shield the busbar 18 and other accessories, and can also prevent the projection light 201 from entering the laminated glass 10 and being reflected by the electric heating element 17 to form a ghost image.

[0099] In some embodiments, the reflective element 15 is a high-low refractive index stack arranged on the fourth surface 132, and the projection light 201 is directly incident on the high-low refractive index stack, so that the propagation of the projection light 201 can be avoided from being interfered by other materials. Specifically, the high-low refractive index stack can be directly arranged on the fourth surface 132, or indirectly arranged on the fourth surface 132. For example, the fourth surface 132 is provided with a shielding layer 14, and the high-low refractive index stack is directly arranged on the surface of the shielding layer 14 away from the fourth surface 132. For another example, the fourth surface 132 is provided with an ultra-thin substrate, and the high-low refractive index stack is directly arranged on the surface of the ultra-thin substrate away from the fourth surface 132. The thickness of the ultra-thin substrate is 0.05 mm to 1.0 mm, and can be exemplified as 0.05 mm, 0.08 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, etc. The material of the ultra-thin substrate can be soda-lime glass, high-alumina glass, lithium-alumina glass, borosilicate glass, polyethylene terephthalate (PET), polycarbonate (PC), or the like.

[0100] When the high-low refractive index stack is directly arranged on the fourth surface 132, as shown in FIG. 1B, the high-low refractive index stack can be composed of only one stack structure, i.e., a first high-refractive index layer 151 and a first low-refractive index layer 152 which are sequentially stacked; or, as shown in FIG. 1C, the high-low refractive index stack can be composed of two stack structures, i.e., a first high-refractive index layer 151, a first low-refractive index layer 152, a second high-refractive index layer 153, and a second low-refractive index layer 154 which are sequentially stacked. Figure 10 Figure 11 ​As shown, the high-low refractive index stack is composed of two stack structures, i.e. the first high refractive index layer 151, the first low refractive index layer 152, the second high refractive index layer 153 and the second low refractive index layer 154 are sequentially stacked; alternatively, the high-low refractive index stack is composed of three stack structures, i.e. the first high refractive index layer, the first low refractive index layer, the second high refractive index layer, the second low refractive index layer, the third high refractive index layer and the third low refractive index layer are sequentially stacked; alternatively, the high-low refractive index stack is composed of four stack structures, i.e. the first high refractive index layer, the first low refractive index layer, the second high refractive index layer, the second low refractive index layer, the third high refractive index layer, the third low refractive index layer, the fourth high refractive index layer and the fourth low refractive index layer are sequentially stacked. Preferably, the layer of the reflective element 15 in direct contact with the fourth surface 132 is a high refractive index layer, i.e. the first high refractive index layer is in direct contact with the fourth surface 132, and the layer of the reflective element 15 farthest away from the fourth surface 132 is a low refractive index layer, i.e. the layer of the reflective element 15 in contact with air is a low refractive index layer. More preferably, the physical thickness of the low refractive index layer of the reflective element 15 farthest away from the fourth surface 132 is 80 nm to 240 nm, which can be exemplified by 80 nm, 85 nm, 90 nm, 95 nm, 100 nm, 105 nm, 110 nm, 115 nm, 120 nm, 125 nm, 130 nm, 135 nm, 140 nm, 145 nm, 150 nm, 160 nm, 170 nm, 180 nm, 190 nm, 200 nm, 210 nm, 220 nm, 230 nm, 240 nm or a range between any two of these values. Alternatively, the physical thickness of the low refractive index layer of the reflective element 15 farthest away from the fourth surface 132 is 90 nm to 200 nm. Further alternatively, the physical thickness of the low refractive index layer of the reflective element 15 farthest away from the fourth surface 132 is 100 nm to 180 nm.

[0101] In other embodiments, as Figure 12 、 Figure 13 、 Figure 14 and Figure 15As shown, the reflective element 15 is a high-low refractive index stack arranged on the fourth surface 132, the high-low refractive index stack comprising at least one stack structure and at least one reflection enhancement layer 150, the material of the reflection enhancement layer 150 being selected from at least one of elemental or alloy of Si (silicon), Ni (nickel), Cr (chromium), Al (aluminum), Ti (titanium), Nb (niobium), Mo (molybdenum), Sn (tin), Zn (zinc), Zr (zirconium), Mg (magnesium), and can be exemplified by crystalline Si, Al, NiCr, etc., the reflection enhancement layer 150 being conducive to improving the reflectivity of the reflective element 15 to P-polarized light and reducing the reflectivity of the reflective element 15 to S-polarized light. Among them, the material of the reflection enhancement layer 150 in the high-low refractive index stack does not contain gold or silver, ensuring that the high-low refractive index stack has excellent properties such as acid resistance, alkali resistance, and abrasion resistance, meeting the requirements of the national standard GB / T 9656, so that the high-low refractive index stack can be applied to the fourth surface 132 of the laminated glass 10, i.e., exposed to air for use. It can be understood that the reflection enhancement layer 150 is manufactured by a magnetron sputtering process, and in order to make the reflection enhancement layer 150 better combined with other layers in the high-low refractive index stack, the application can also optionally introduce a small amount of oxygen and / or nitrogen into the sputtering cavity during the magnetron sputtering process of the reflection enhancement layer 150, forming at least one of an oxide, a nitride, and an oxynitride of the elemental or the alloy, i.e., the reflection enhancement layer 150 also contains at least one of a sub-stoichiometric oxide, a nitride, and an oxynitride of the elemental or the alloy, such as NiCr and NiCrOx, or NiCr and NiCrNx, etc., x being determined according to the sub-stoichiometric deposition in the magnetron sputtering process.

[0102] Among them, the total physical thickness of the reflection enhancement layer 150 is greater than 10 nm, and can be exemplified by 11 nm, 15 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 45 nm, 50 nm, 55 nm, 60 nm, etc.; preferably, the total physical thickness of the reflection enhancement layer 150 is greater than or equal to 15 nm; further preferably, the total physical thickness of the reflection enhancement layer 150 is 20 nm to 50 nm; which can effectively improve the reflectivity of the reflective element 15 to P-polarized light and reduce the reflectivity of the reflective element 15 to S-polarized light, and is also conducive to simplifying the manufacturing process of the reflection enhancement layer 150.

[0103] In Figure 12In this embodiment, the reflection enhancement layer 150 is located in at least one stacked structure and is situated between the high refractive index layer and the low refractive index layer of the stacked structure. Specifically, the reflection element 15 includes one stacked structure and one reflection enhancement layer 150, with the reflection enhancement layer 150 situated between a first high refractive index layer 151 and a first low refractive index layer 152; or, the reflection element 15 includes two stacked structures, with the reflection enhancement layer 150 situated between a second high refractive index layer and a second low refractive index layer; or, the reflection element 15 includes three stacked structures, with the reflection enhancement layer 150 situated between a third high refractive index layer and a third low refractive index layer.

[0104] exist Figure 13 In this embodiment, the reflection enhancement layer 150 is located in at least one stacked structure and in at least one high refractive index layer. The at least one high refractive index layer includes at least two high refractive index sublayers, and the reflection enhancement layer 150 is located between two adjacent high refractive index sublayers. Specifically, the reflection element 15 includes two stacked structures and a reflection enhancement layer 150. The two stacked structures are a first high refractive index layer 151, a first low refractive index layer 152, a second high refractive index layer 153, and a second low refractive index layer 154. The second high refractive index layer 153 includes two sublayers, and the reflection enhancement layer 150 is located in the second high refractive index layer 153 and between the two sublayers, that is, the reflection enhancement layer 150 is located between the second lower high refractive index sublayer 1531 and the second upper high refractive index sublayer 1532.

[0105] exist Figure 14 In this embodiment, the reflection enhancement layer 150 is located in at least one stacked structure and in at least one low-refractive-index layer. The at least one low-refractive-index layer includes at least two low-refractive-index sublayers, and the reflection enhancement layer 150 is located between two adjacent low-refractive-index sublayers. Specifically, the reflection element 15 includes two stacked structures and a reflection enhancement layer 150. The two stacked structures are a first high-refractive-index layer 151, a first low-refractive-index layer 152, a second high-refractive-index layer 153, and a second low-refractive-index layer 154. The second low-refractive-index layer 154 includes two sublayers, and the reflection enhancement layer 150 is located in the second low-refractive-index layer 154 and between the two sublayers, that is, the reflection enhancement layer 150 is located between the second lower sublayer 1541 and the second upper sublayer 1542.

[0106] exist Figure 15In some embodiments, the reflective element 15 comprises at least two stack structures, and a reflection enhancement layer 150 is located between two adjacent stack structures. Specifically, the reflective element 15 comprises three stack structures, i.e., a first high refractive index layer 151, a first low refractive index layer 152, a second high refractive index layer 153, a second low refractive index layer 154, a third high refractive index layer 155, and a third low refractive index layer 156, and one reflection enhancement layer 150 is located between the first low refractive index layer 152 and the second high refractive index layer 153, and another reflection enhancement layer 150 is located between the second low refractive index layer 154 and the third high refractive index layer 155. Alternatively, the reflective element 15 comprises two stack structures and one reflection enhancement layer 150, and the reflection enhancement layer 150 is located between the two stack structures. Alternatively, the reflective element 15 comprises four stack structures and two reflection enhancement layers 150. Alternatively, the reflective element 15 comprises four stack structures and three reflection enhancement layers 150.

[0107] The present application also provides a projection system, which comprises the projection device 20 and the laminated glass 10 provided by the present application, the projection device 20 is used to generate the projection light 201, the projection light 201 comprises at least 80% of P-polarized light, the projection light 201 is incident into at least one display area 103 in the shielding area 102 at an incident angle of 38°-85°, and the display area 103 reflects the projection light 201 to the eyes of the driver in the vehicle to form a display image.

[0108] The wavelength of the projection light 201 can be in the range of 380 nm to 780 nm. The projection light 201 can comprise at least 80% of P-polarized light, the higher the proportion of P-polarized light in the projection light 201, the more conducive to meeting the use requirements of the driver wearing sunglasses and the easier to eliminate the visual ghosting phenomenon of the display image. For example, the projection light 201 comprises at least 85% of P-polarized light, or the projection light 201 comprises at least 90% of P-polarized light, or the projection light 201 comprises at least 95% of P-polarized light, or the projection light 201 is 100% of P-polarized light, i.e., the projection light 201 is substantially pure P-polarized light.

[0109] The present application also provides a projection system, which comprises the projection device 20 and the laminated glass 10 provided by the present application, the projection device 20 is used to generate the projection light, the projection light 201 comprises at least 80% of P-polarized light, the projection light 201 is incident into at least one display area 103 in the shielding area 102 at an incident angle of 38°-85°, and the display area 103 reflects the projection light 201 to form a display image.

[0110] The projection device 20 of the projection system is installed in the interior of the vehicle body, and the laminated glass 10 of the projection system is installed at the opening of the vehicle body. When the laminated glass 10 is installed on the vehicle, it is preferably used as the front windshield of the vehicle. However, it is not limited thereto, and the laminated glass 10 can also be used as the rear windshield or side window glass, thereby providing more display scene applications for the vehicle.

[0111] In order to make the purposes and advantages of the present application more clear, the effects of the laminated glass of the present application are further described in detail below in combination with specific examples.

[0112] In Comparative Examples 1-4 and Example 1-6, the high-low refractive index stack of the reflective element 15 is exemplified.

[0113] A transparent glass sheet with a thickness of 2.1 mm and a visible light transmittance of 90% is prepared, and the high-low refractive index stacks of Comparative Examples 1-4 and Example 1-6 are deposited on the surface of the transparent glass sheet by a magnetron sputtering process, and the specific film layer materials and physical thicknesses are as follows:

[0114] Comparative Example 1: transparent glass sheet / first high refractive index layer (TiO2 50 nm) / first low refractive index layer (SiO2 190 nm), that is, Comparative Example 1 does not contain a reflection enhancement layer, and the high-low refractive index stack of Comparative Example 1 is only composed of one stack structure.

[0115] Comparative Example 2: transparent glass sheet / first high lower sub-layer (ZnSnOx 63.6 nm) / first high middle sub-layer (Si3N4 10 nm) / reflection enhancement layer (NiCr 1.3 nm) / first high upper sub-layer (Si3N4 10 nm) / first low refractive index layer (SiO2 106.4 nm), that is, Comparative Example 2 contains one reflection enhancement layer, and the high-low refractive index stack of Comparative Example 2 is only composed of one stack structure, the first high refractive index layer includes three sub-layers, and the reflection enhancement layer is located between the two adjacent first high refractive index sub-layers.

[0116] Comparative Example 3: transparent glass sheet / first high refractive index layer (TiO2 29.7 nm) / first low refractive index layer (SiO2 99.8 nm) / second high refractive index layer (TiO2 21.9 nm) / second low lower sub-layer (SiO2 100.2 nm) / reflection enhancement layer (NiCr 8.6 nm) / second low upper sub-layer (SiO2 61 nm), that is, Comparative Example 3 contains one reflection enhancement layer, and the high-low refractive index stack of Comparative Example 3 is composed of two stack structures, the second low refractive index layer includes two sub-layers, and the reflection enhancement layer is located between the two adjacent second low refractive index sub-layers.

[0117] Comparative Example 4: transparent glass sheet / first high lower sublayer (ZnSnOx 23.6 nm) / first reflection enhancement layer (NiCr 11.3 nm) / first high upper sublayer (TiO2 66.5 nm) / second reflection enhancement layer (NiCr 26.4 nm) / first low refractive index layer (SiO2 167.6 nm), i.e. comparative example 4 comprises two reflection enhancement layers, the high / low refractive index stack of comparative example 4 consists of only one stack structure, the first high refractive index layer comprises two sublayers, the first reflection enhancement layer is located between the first high lower sublayer and the first high upper sublayer, the second reflection enhancement layer is located between the first high upper sublayer and the first low refractive index layer.

[0118] Example 1 : transparent glass sheet / first high lower sublayer (ZnSnOx 85.5 nm) / first high upper sublayer (TiO2 71.2 nm) / first low lower sublayer (SiO2 37.3 nm) / reflection enhancement layer (NiCr 16 nm) / first low upper sublayer (SiO2 102.5 nm), i.e. example 1 comprises one reflection enhancement layer, the high / low refractive index stack of example 1 consists of only one stack structure, the first high refractive index layer comprises two sublayers, the first low refractive index layer also comprises two sublayers, the reflection enhancement layer is located between the two adjacent first low refractive index sublayers.

[0119] Example 2: transparent glass sheet / first high refractive index layer (TiO2 29.7 nm) / first low refractive index layer (SiO2 99.8 nm) / second high refractive index layer (TiO2 23.6 nm) / second low lower sublayer (SiO2 110.2 nm) / reflection enhancement layer (NiCr 26.8 nm) / second low upper sublayer (SiO2 102.1 nm), i.e. example 2 comprises one reflection enhancement layer, the high / low refractive index stack of example 2 consists of two stack structures, the second low refractive index layer comprises two sublayers, the reflection enhancement layer is located between the two adjacent second low refractive index sublayers.

[0120] Example 3: transparent glass sheet / first high lower sublayer (ZnSnOx 27.2 nm) / first high upper sublayer (TiO2 29.7 nm) / first low refractive index layer (SiO2 49.1 nm / second high lower sublayer (TiO2 25.3 nm) / reflection enhancement layer (NiCr 28.2 nm) / second high upper sublayer (TiO2 71.4 nm) / second low refractive index layer (SiO2 140.6 nm), i.e. example 3 comprises one reflection enhancement layer, the high / low refractive index stack of example 3 consists of two stack structures, the second high refractive index layer comprises two sublayers, the reflection enhancement layer is located between the two adjacent second high refractive index sublayers.

[0121] Example 4: transparent glass sheet / first high lower sub-layer (TiO2 48.4 nm) / first reflection enhancement layer (NiCr 7.1 nm) / first high upper sub-layer (TiO2 77.1 nm) / first low refractive index layer (SiO2 21.3 nm) / second reflection enhancement layer (NiCr 26.3 nm) / second high refractive index layer (TiO2 4 nm) / second low refractive index layer (SiO2 92.2 nm), i.e. Example 4 contains two reflection enhancement layers, the high-low refractive index stack of Example 4 is composed of two stack structures, the first high refractive index layer includes two sub-layers, the first reflection enhancement layer is located between the first high lower sub-layer and the first high upper sub-layer, and the second reflection enhancement layer is located between the first low refractive index layer and the second high refractive index layer.

[0122] Example 5: transparent glass sheet / first high lower sub-layer (ZnSnOx 23.6 nm) / first reflection enhancement layer (NiCr 11.3 nm) / first high upper sub-layer (TiO2 66.5 nm) / second reflection enhancement layer (NiCr 26.4 nm) / first low refractive index layer (SiO2 108.2 nm), i.e. Example 5 contains two reflection enhancement layers, the high-low refractive index stack of Example 5 is composed of only one stack structure, the first high refractive index layer includes two sub-layers, the first reflection enhancement layer is located between the first high lower sub-layer and the first high upper sub-layer, and the second reflection enhancement layer is located between the first high upper sub-layer and the first low refractive index layer.

[0123] Example 6: transparent glass sheet / first high refractive index layer (TiO2 16.8 nm) / first low refractive index layer (SiO2 72.8 nm) / first reflection enhancement layer (NiCr 12.2 nm) / second high refractive index layer (TiO2 57.7 nm) / second low refractive index layer (SiO2 32 nm) / second reflection enhancement layer (NiCr 29.3 nm) / third high refractive index layer (TiO2 6.9 nm) / third low refractive index layer (SiO2 91.4 nm), i.e. Example 6 contains two reflection enhancement layers, the high-low refractive index stack of Example 6 is composed of three stack structures, the first reflection enhancement layer is located between the first low refractive index layer and the second high refractive index layer, and the second reflection enhancement layer is located between the second low refractive index layer and the third high refractive index layer.

[0124] The transparent glass sheets with film layer structures of Comparative Examples 1 to 4 and Examples 1 to 6 were subjected to high-temperature heat treatment at at least 500°C, and then the visible light transmittance was measured, and the measurement results were tabulated in Table 1.

[0125] Visible light transmittance: measured and calculated according to ISO 9050 in the wavelength range of 380 nm to 780 nm.

[0126] Table 1: Visible light transmittance of transparent glass sheets with reflective elements of Comparative Examples 1-4 and Example 1-6

[0127]

[0128]

[0129] As can be seen from Table 1, the transparent glass sheet with a thickness of 2.1 mm has a visible light transmittance TL0 greater than 88%, and the transparent glass sheet with a thickness of 2.1 mm, a visible light transmittance greater than 88% and provided with the reflective element 15 has a visible light transmittance TL1 less than 80%. Preferably, the transparent glass sheet with a thickness of 2.1 mm, a visible light transmittance greater than 88% and provided with the reflective element 15 of Example 1-6 has a visible light transmittance TL1 less than or equal to 30%. Exemplarily, TL1 is less than or equal to 25%. Yet exemplarily, TL1 is less than or equal to 20%. Further exemplarily, TL1 is less than or equal to 15%. Still further exemplarily, TL1 is less than or equal to 10%. In this way, the interference of the reflected light 201 of the projection light with the image formed by the reflective element 15 due to the reflection of the projection light by the thermal insulation layer 16 can be weakened or even eliminated, and the use of the shielding layer 14 can be saved to some extent or even partially replaced, which is conducive to reducing the manufacturing cost of the laminated glass 10.

[0130] In some embodiments, TL1 and TL0 satisfy: TL1 / TL0≤0.35; or TL1 / TL0≤0.3; or TL1 / TL0≤0.25; or TL1 / TL0≤0.2; or TL1 / TL0≤0.15; or TL1 / TL0≤0.1.

[0131] Another transparent glass sheet with a thickness of 2.1 mm and a visible light transmittance greater than 88% is prepared, and a black ceramic ink is printed on the surface thereof by a screen printing process, and after high-temperature sintering, the shielding layer 14 is formed;

[0132] Another transparent PVB with a thickness of 0.76 mm is prepared, and the transparent glass sheets with the reflective elements of Comparative Examples 1-4 and Example 1-6 are respectively laminated with the transparent PVB and the transparent glass sheet with the shielding layer 14 according to the automobile glass production process and subjected to autoclave treatment, etc., and finally the laminated glass 10 with the reflective elements of Comparative Examples 1-4 and Example 1-6 is obtained.

[0133] The transparent glass sheet with the shielding layer 14 as the outer glass sheet of the laminated glass 10, the transparent glass sheet with the reflective element of Comparative Examples 1-4 and Example 1-6 as the inner glass sheet of the laminated glass 10, the shielding layer 14 is located on the second side of the laminated glass 10 and forms the shielding area 102, and the reflective element 15 is arranged on the fourth side of the laminated glass 10 and located within the bottom shielding area 1021, and the reflective element 15 forms the display area 103 within the bottom shielding area 1021.

[0134] The P light reflectance RLp, S light reflectance RLs, natural light reflectance RL, reflected color R4a and reflected color R4b of the laminated glass 10 with the reflective element of Comparative Examples 1-4 and Example 1-6 are measured, and the measurement results are listed in Table 2.

[0135] P light reflectance RLp: according to standard ISO9050, the reflectance of P polarized light with a wavelength of 380nm-780nm incident at an incident angle of 65° on the display area is measured from the fourth side;

[0136] S light reflectance RLs: according to standard ISO9050, the reflectance of S polarized light with a wavelength of 380nm-780nm incident at an incident angle of 65° on the display area is measured from the fourth side;

[0137] Natural light reflectance RL: according to standard ISO9050, the reflectance of light emitted by A light source with a wavelength of 380nm-780nm incident at an incident angle of 8° on the display area is measured from the fourth side;

[0138] Reflected color R4a: based on CIE1976, the a value of the reflected color Lab value of light emitted by D65 light source with a wavelength of 380nm-780nm incident at an incident angle of 65° on the display area is measured from the fourth side;

[0139] Reflected color R4b: based on CIE1976, the b value of the reflected color Lab value of light emitted by D65 light source with a wavelength of 380nm-780nm incident at an incident angle of 65° on the display area is measured from the fourth side;

[0140] Table 2: Performance parameters of the laminated glass with the reflective element of Comparative Examples 1-4 and Example 1-6

[0141]

[0142] As can be seen from Table 2, the P light reflectance RLp of Comparative Example 1 is less than 10% and the S light reflectance RLs is greater than 40%, so that the ratio of RLp / RLs is much less than 1, so that the projected display in the display area can only obtain an image with low brightness, and if a bright image is to be obtained, the energy consumption of the projection device 20 needs to be greatly increased, which is not conducive to the miniaturization and heat dissipation design of the projection device 20.

[0143] The P light reflectance RLp of Comparative Example 2 is less than 15% and the S light reflectance RLs is less than 5%, although the ratio of RLp / RLs is greater than 3, a low brightness image can only be obtained in the projection display of the display area, and if a bright image is to be obtained, the energy consumption of the projection device 20 needs to be greatly increased, which is not conducive to the miniaturization and heat dissipation design of the projection device 20; at the same time, the reflection color R4a of the display area of Comparative Example 2 is greater than 10, and there are obvious disadvantages such as red appearance.

[0144] The P light reflectance RLp of Comparative Example 3 is less than 25% and the S light reflectance RLs is greater than 25%, so that the ratio of RLp / RLs is less than 1, so that the brightness of the image obtained in the projection display of the display area is slightly low, and if a bright image is to be obtained, the energy consumption of the projection device 20 still needs to be increased; at the same time, the reflection color R4b of the display area of Comparative Example 3 is greater than 10, and there are obvious disadvantages such as yellow appearance.

[0145] The P light reflectance RLp of Comparative Example 4 is less than 30% and the S light reflectance RLs is greater than 65%, so that the ratio of RLp / RLs is less than 1, there is a defect that the P light reflectance is low and the S light reflectance is too high, which leads to high energy consumption of the projection device, and the natural light reflectance RL is greater than 45%, which further causes glare due to the high projection brightness, and the instrument panel reflection is obvious, which reduces the display effect.

[0146] The P light reflectance RLp of Comparative Example 4 is less than 30% and the S light reflectance RLs is greater than 65%, so that the ratio of RLp / RLs is less than 1, there is a defect that the P light reflectance is low and the S light reflectance is too high, which leads to high energy consumption of the projection device, and the natural light reflectance RL is greater than 45%, which further causes glare due to the high projection brightness, and the instrument panel reflection is obvious, which reduces the display effect.

[0147] Also, the reflective color of the display area of Examples 1-6 is R4a≤0 and R4b≤0, which provides a comfortable appearance color for the display area observed by the person inside the vehicle. In Examples 4-6, the high-low refractive index stack includes two reflection enhancement layers, the reflection enhancement layer farthest from the fourth surface is the second reflection enhancement layer, the reflection enhancement layer closest to the fourth surface is the first reflection enhancement layer, the physical thickness of the second reflection enhancement layer is greater than the physical thickness of the first reflection enhancement layer, which is conducive to setting the total physical thickness of the reflection enhancement layers to be greater than 30 nm and the film system design of the high-low refractive index stack. Illustratively, the ratio of the physical thickness of the second reflection enhancement layer to the physical thickness of the first reflection enhancement layer is greater than or equal to 1.5. Further illustratively, the ratio of the physical thickness of the second reflection enhancement layer to the physical thickness of the first reflection enhancement layer is greater than or equal to 2. Further illustratively, the ratio of the physical thickness of the second reflection enhancement layer to the physical thickness of the first reflection enhancement layer is greater than or equal to 3.

[0148] The above provides the content provided by the embodiments of the present application in detail, the principles and embodiments of the present application are described and explained in this paper, the above description is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific embodiments and application scope will be changed; in view of the above, the content of the specification should not be understood as the limitation of the present application.

Claims

1. A laminated glass, characterized by, The laminated glass has a light-transmitting region and a shielding region; The visible light transmittance of the light-transmitting region is greater than or equal to 70%, and the visible light transmittance of the shielding region is less than or equal to 3%; At least one display region is arranged in the shielding region, the display region has a P light reflectance RLp for P polarized light with a wavelength of 380 nm-780 nm incident at an incident angle of 65°, the P light reflectance RLp = 30%-70%, the display region has an S light reflectance RLs for S polarized light with a wavelength of 380 nm-780 nm incident at an incident angle of 65°, and the ratio RLp / RLs of the P light reflectance RLp to the S light reflectance RLs is greater than 1.

2. Laminated glass according to claim 1, characterized in that The shielding region includes a bottom shielding region located below the light-transmitting region, and the display region is located in the bottom shielding region.

3. Laminated glass according to claim 2, characterized in that The ratio of the total area of the display region to the area of the bottom shielding region is greater than or equal to 10%.

4. The laminated glass according to claim 2, wherein The ratio of the total area of the display region to the area of the bottom shielding region is 15%-110%.

5. The laminated glass according to claim 4, wherein The ratio of the total area of the display region to the area of the bottom shielding region is 20%-105%.

6. The laminated glass according to claim 5, wherein The ratio of the total area of the display region to the area of the bottom shielding region is 25%-100%.

7. The laminated glass according to claim 6, wherein The ratio of the total area of the display region to the area of the bottom shielding region is 30%-95%.

8. The laminated glass according to claim 7, wherein The ratio of the total area of the display region to the area of the bottom shielding region is 40%-90%.

9. The laminated glass of claim 1, wherein The ratio RLp / RLs of the P light reflectance RLp to the S light reflectance RLs is greater than or equal to 1.

5.

10. Laminated glass according to claim 9, characterized in that RLp / RLs≥2.

11. Laminated glass according to claim 10, characterized in that RLp / RLs≥2.

5.

12. The laminated glass according to claim 11, wherein RLp / RLs≥3.

13. Laminated glass according to claim 12, characterized in that RLp / RLs≥4.

14. The laminated glass of claim 1, wherein The P light reflectance RLp = 40%-60%.

15. The laminated glass of claim 1, wherein The S light reflectance RLs≤25%.

16. Laminated glass according to claim 15, characterized in that The S light reflectance RLs≤20%.

17. Laminated glass according to claim 16, characterized in that The S light reflectance RLs≤15%.

18. Laminated glass according to claim 17, characterized in that The S light reflectance RLs≤10%.

19. The laminated glass of claim 1, wherein The display region has a natural light reflectance RL for natural light with a wavelength of 380 nm-780 nm incident at an incident angle of 65°, and the natural light reflectance RL≤35%.

20. The laminated glass of claim 19, wherein The natural light reflectance RL≤30%.

21. Laminated glass according to claim 20, wherein The natural light reflectance RL≤25%.

22. The laminated glass of claim 1, wherein The laminated glass includes a first glass plate, a bonding layer, a second glass plate, a shielding layer, and a reflective element, the first glass plate has a first face and a second face, the second glass plate has a third face and a fourth face, the bonding layer connects the second face and the third face, the shielding layer is arranged in the shielding region, the reflective element is arranged in the shielding region and covers at least the display region, and the shielding layer is located between the first glass plate and the reflective element.

23. The laminated glass of claim 22, wherein The material of the shielding layer is selected from at least one of a dark ink, an opaque polymer film, and a light-adjustable film.

24. The laminated glass of claim 22, wherein The reflective element is selected from at least one of a high-low refractive index stack, a metal stack, a holographic film, and a stacked polymer film.

25. The laminated glass of claim 22, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. The shielding area includes a bottom shielding area located below the light-transmitting area, the display area is located in the bottom shielding area, the height of the reflective element is greater than or equal to the height of the shielding layer in the bottom shielding area, and the difference between the height of the reflective element and the height of the shielding layer in the bottom shielding area is h, 0≤h≤10mm.

26. Laminated glass according to claim 25, wherein 0≤h≤8mm.

27. Laminated glass according to claim 26, wherein 0≤h≤5mm.

28. The laminated glass of claim 22, wherein The shielding area includes a bottom shielding area located below the light-transmitting area, the shielding layer in the bottom shielding area is composed of a first shielding sub-layer and a second shielding sub-layer, the material of the first shielding sub-layer is dark ink, and the material of the second shielding sub-layer is an opaque polymer film or a light-adjustable film.

29. The laminated glass of claim 22, wherein the interlayer is a copolymer of a polyvinyl acetal. The laminated glass further comprises a heat insulation layer selected from at least one of single silver nano coating, double silver nano coating, three silver nano coating, four silver nano coating, ITO nano coating, FTO nano coating, and infrared blocking micron coating, and the total solar energy transmittance of the laminated glass with the heat insulation layer is less than or equal to 55%.

30. The laminated glass of claim 22, wherein the interlayer is a copolymer of a polyvinyl acetal. The transparent glass sheet with a thickness of 2.1mm has a visible light transmittance TL0, and the transparent glass sheet provided with the reflective element has a visible light transmittance TL1, TL0≥88%, and TL1≤30%.

31. Laminated glass according to claim 30, wherein The TL1 and the TL0 satisfy: TL1 / TL0≤0.

35.

32. The laminated glass of claim 31, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. TL1 / TL0≤0.

3.

33. The laminated glass of claim 32, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. TL1 / TL0≤0.

25.

34. The laminated glass of claim 33, wherein TL1 / TL0≤0.

2.

35. The laminated glass of claim 34, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. TL1 / TL0≤0.

15.

36. The laminated glass of claim 35, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. TL1 / TL0≤0.

1.

37. The laminated glass of claim 22, wherein the interlayer is a copolymer of a polyvinyl acetal. The laminated glass further comprises an electric heating element and at least two busbars, the busbars are electrically connected with the electric heating element, the electric heating element is a single-silver electric heating coating, or a double-silver electric heating coating, or a triple-silver electric heating coating, or a quadruple-silver electric heating coating, or a quintuple-silver electric heating coating, or a TCO electric heating coating, or a copper wire, or a tungsten wire, or an aluminum wire, or a copper alloy wire, or a printed silver paste wire, or a nano-silver wire, or a carbon fiber wire, or a metal mesh grid, or a graphene heating sheet, the electric heating element can enable the laminated glass to have a heating power density of at least 400 W / m 2 .

38. The laminated glass of claim 22, wherein the interlayer is a copolymer of a polyvinyl acetal. The reflective element is a high-low refractive index stack arranged on the fourth surface, the high-low refractive index stack comprises at least one stack structure, each stack structure comprises a high refractive index layer and a low refractive index layer stacked in sequence, the refractive index of the high refractive index layer is greater than or equal to 1.8, and the refractive index of the low refractive index layer is less than 1.

8.

39. The laminated glass of claim 38, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. The high-low refractive index stack is directly arranged on the fourth surface. Alternatively, a shielding layer is arranged on the fourth surface, and the high-low refractive index stack is directly arranged on the surface of the shielding layer away from the fourth surface. Alternatively, an ultrathin substrate is arranged on the fourth surface, and the high-low refractive index stack is directly arranged on the surface of the ultrathin substrate away from the fourth surface, the thickness of the ultrathin substrate is 0.05mm to 1.0mm, and the material of the ultrathin substrate is soda-lime glass, or high-aluminum glass, or lithium-aluminum glass, or borosilicate glass, or polyethylene terephthalate, or polycarbonate.

40. The laminated glass of claim 38, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. The layer of the high-low refractive index stack closest to the fourth surface is a high refractive index layer, and the layer of the high-low refractive index stack farthest from the fourth surface is a low refractive index layer; the physical thickness of the low refractive index layer is 80nm to 240nm.

41. The laminated glass of claim 40, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. The physical thickness of the low refractive index layer is 90nm to 200nm.

42. Laminated glass according to claim 41, wherein the polyvinyl butyral resin has a butyral content of 30 to 40 weight percent. The physical thickness of the low refractive index layer is 100nm to 180nm.

43. The laminated glass of claim 38, wherein the polyvinyl acetal resins have a weight average molecular weight of 20,000 to 200,000. The high-low refractive index stack further comprises at least one reflection enhancement layer, the material of the reflection enhancement layer is selected from at least one of the group consisting of Si, Ni, Cr, Al, Ti, Nb, Mo, Sn, Zn, Zr, Mg in a single element or an alloy, the total physical thickness of the reflection enhancement layer is greater than 10 nm.

44. The laminated glass of claim 43, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. At least one of the reflection enhancement layers is located in at least one of the stack structures.

45. The laminated glass of claim 44, wherein the polyvinyl acetal resin has a weight average molecular weight of 20,000 to 200,000. The reflection enhancement layer is located between the high refractive index layer and the low refractive index layer of the stack structure. And / or, the high refractive index layer of the stack structure comprises at least two high refractive index sub-layers, the reflection enhancement layer is located between two adjacent high refractive index sub-layers. And / or, the low refractive index layer of the stack structure comprises at least two low refractive index sub-layers, the reflection enhancement layer is located between two adjacent low refractive index sub-layers.

46. The laminated glass of claim 43, wherein the polyvinyl acetal resins have a weight average molecular weight of 20,000 to 200,000. The high-low refractive index stack comprises at least two of the stack structures, at least one of the reflection enhancement layers is located between two adjacent stack structures.

47. The laminated glass of claim 43, wherein the polyvinyl acetal resins have a weight average molecular weight of 20,000 to 200,000. The high-low refractive index stack comprises at least two of the reflection enhancement layers, the ratio of the physical thickness of the reflection enhancement layer farthest from the fourth surface to the physical thickness of the reflection enhancement layer closest to the fourth surface is greater than or equal to 2.

48. The laminated glass of claim 43, wherein the polyvinyl acetal resins have a weight average molecular weight of 20,000 to 200,000. The reflection enhancement layer further comprises at least one of sub-stoichiometric oxides, nitrides, oxynitrides of the single element or the alloy.

49. A projection system, characterized by The laminated glass comprises a projection device and a laminated glass according to any one of claims 1-48, the projection device is used to generate projection light, the projection light contains at least 80% P-polarized light, the projection light is incident into at least one display area in the shielding area at an incident angle of 38°-85°, the display area reflects the projection light to form a display image.

Images