Panoramic glass and vehicle

Abstract

Provided in the present application are a panoramic glass and a vehicle. The panoramic glass comprises a glass substrate and a reflective layer arranged on the glass substrate; the glass substrate has a width D1 in a first direction and a length D2 in a second direction, wherein the ratio of the length D2 to the width D1, i.e., D2 / D1≥1, and the glass substrate has a light-transmitting region and a shading region located above the light-transmitting region; and the reflective layer is arranged in the shading region, and the shading region has a total solar transmittance (TTS) of ≤35%. Arranging the reflective layer on the glass substrate and arranging the reflective layer in the shading region not only ensures that the panoramic glass brings a wider field of view to a driver, but also enables the reflective layer to reflect sunlight so as to allow the total solar transmittance (TTS) of the shading region to ≤35％, thereby reducing the usage rate of a cooling device in a vehicle, and using more energy of the vehicle for driving so as to improve the mileage of the vehicle; in addition, the reflective layer can also achieve a sun protection effect, thereby preventing glare from dazzling the driver's eyes, and improving driving safety.

Description

Panoramic glass and vehicle

[0001] The present disclosure claims priority to the Chinese patent application No. 202411380586.9, filed on September 30, 2024, to the Chinese Patent Office, and entitled “Panoramic glass and vehicle”, the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application belongs to the technical field of glass, and in particular relates to a panoramic glass and a vehicle. BACKGROUND

[0003] With the increasing demand of users, in order to expand the driver's field of view, the longitudinal length of the front windshield glass of the vehicle is extended to the rear of the front row seat, i.e. the B pillar, the top view range of the front windshield glass is improved, and the traditional front windshield glass becomes a panoramic glass. However, due to the large size of the panoramic glass, more sunlight is transmitted into the vehicle, resulting in a higher temperature in the vehicle and reducing the user experience. SUMMARY

[0004] In view of this, the first aspect of the present application provides a panoramic glass, the panoramic glass comprising a glass substrate and a reflective layer provided on the glass substrate, the reflective layer being used for reflecting sunlight, the glass substrate having a width D1 along a first direction and a length D2 along a second direction, the first direction and the second direction being perpendicular to each other, the ratio D2 / D1 of the length D2 to the width D1 being ≥1, the glass substrate having a light transmission area and a sunshade area located above the light transmission area.

[0005] The visible light transmittance of the light transmission area is ≥70%, the reflective layer is provided in the sunshade area, and the sunshade area has a total solar transmittance TTS, the total solar transmittance TTS≤35%.

[0006] Wherein, the total solar transmittance TTS is 15%-35%, or 15%-30%, or 15%-25%.

[0007] Wherein, the sunshade area has an infrared light reflectance IR for infrared light with a wavelength of 820nm-1100nm, the infrared light reflectance IR≥70%, or IR≥75%, or IR≥80%, or IR≥85%.

[0008] Wherein, the sunshade area has a visible light transmittance TL, the visible light transmittance TL≤10%, or TL≤5%, or TL≤3%.

[0009] Wherein, the inner surface of the panoramic glass corresponding to the sunshade area has a light reflectance RL, the light reflectance RL≤10%, or RL≤5%, or RL≤3%.

[0010] wherein the sunshade region has Lab1 values for the reflected color of visible light incident at 60° angle of incidence, a1 < 0 and b1 < 3, or a1 < -1 and b1 < 2, or a1 < -2 and b1 < 2, or a1 < -3 and b1 < 1, or a1 < -4 and b1 < 1.

[0011] wherein the sunshade region has Lab2 values for the reflected color of visible light incident at 90° angle of incidence, a2 < 0.5 and b2 < 4, or a2 < 0 and b2 < 2, or a2 < -1 and b2 < 0, or a2 < -4 and b2 < -2.

[0012] wherein the glass substrate comprises a first glass sheet having a first surface and a second surface, a second glass sheet having a third surface and a fourth surface, a bonding layer connecting the second surface and the third surface, and a sunshade layer disposed between the second surface and the third surface and within the sunshade region, and the reflective layer is disposed between the second surface and the third surface and at least partially overlaps the area where the sunshade layer is located.

[0013] wherein the reflective layer comprises a first reflective sub-layer and / or a second reflective sub-layer, the first reflective sub-layer comprises a plurality of polymer layers stacked together, and the second reflective sub-layer comprises at least one metal layer or metal alloy layer.

[0014] wherein the reflective layer comprises the first reflective sub-layer, and the physical thickness of the first reflective sub-layer is 0.025 mm to 0.1 mm, or 0.05 mm to 0.1 mm.

[0015] wherein the reflective layer comprises the first reflective sub-layer, and the material of the polymer layers comprises at least one of PET, PETG, and PCTG.

[0016] wherein the reflective layer comprises the second reflective sub-layer, and the material of the metal layer or metal alloy layer comprises at least one of Au, Ag, Cu, Al, Mo, and Pt.

[0017] wherein the reflective layer comprises the second reflective sub-layer, and the physical thickness of the second reflective sub-layer 22 is 15 nm to 50 nm.

[0018] wherein the glass substrate further has a masking region surrounding the light-transmissive region and the sunshade region, and the glass substrate further comprises a masking layer disposed within the masking region, and the masking layer is disposed on at least one of the second surface, the third surface, and the fourth surface.

[0019] wherein the material of the masking layer is selected from at least one of a dark color ink, an opaque polymer film, and a light control film.

[0020] wherein the distance L from the reflective layer to the edge of the glass substrate is ≥ 3 mm, or L ≥ 5 mm, or L ≥ 8 mm, or L ≥ 10 mm.

[0021] wherein the sunshade layer is a colored sunshade layer, and the visible light transmittance of the colored sunshade layer is ≤ 10%;

[0022] or, the sunshade layer has a colored area and a non-colored area, the visible light transmittance of the colored area is ≤ 10%, the visible light transmittance of the non-colored area is ≥ 50%, and the total solar energy transmittance TTS of the panoramic glass corresponding to the colored area is ≤ 35%.

[0023] wherein the thickness of the sunshade layer is 0.38 mm to 0.78 mm.

[0024] wherein the material of the sunshade layer is selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), and ionomer (SGP).

[0025] The second aspect of the present application provides a vehicle, which comprises a vehicle body and the panoramic glass provided by the first aspect of the present application, and the panoramic glass is arranged on the vehicle body.

[0026] The panoramic glass and the vehicle provided by the present application ensure that the panoramic glass can provide the driver with a wider field of view by arranging the reflective layer on the glass substrate and arranging the reflective layer in the sunshade area. In addition, the reflective layer reflects sunlight, so that the total solar energy transmittance TTS of the sunshade area is ≤ 35%, the use rate of the cooling device in the vehicle is reduced, more energy of the vehicle is used for driving, the mileage of the vehicle is improved, and the reflective layer also has the effect of sun protection, which avoids the eyes of the driver being injured and improves the safety of driving. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be described below.

[0028] FIG. 1 is a top view of the panoramic glass according to one embodiment of the present application.

[0029] FIG. 2 is a cross-sectional view of the panoramic glass according to the present application.

[0030] FIG. 3 is a partial cross-sectional view of the panoramic glass according to the present application provided with a first reflective sub-layer.

[0031] FIG. 4 is a partial cross-sectional view of the panoramic glass according to the present application provided with a second reflective sub-layer.

[0032] FIG. 5 is a spectral diagram of the panoramic glass provided by the present application.

[0033] Label explanation: panoramic glass 1, glass substrate 10, light transmission area 101, sunshade area 102, shielding area 103, first glass plate 11, first surface 111, second surface 112, bonding layer 12, second glass plate 13, third surface 131, fourth surface 132, sunshade layer 14, shielding layer 15, reflection layer 20, first reflection sub-layer 21, second reflection sub-layer 22. DETAILED DESCRIPTION

[0034] The following is a preferred embodiment 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.

[0035] Unless otherwise stated or contradictory, the terms or phrases used in the present application have the following meanings:

[0036] In the present application, "first", "second", etc. are only used 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.

[0037] 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.

[0038] 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.

[0039] As shown in FIGS. 1-4, the present application provides a panoramic glass 1, which comprises a glass substrate 10 and a reflection layer 20 provided on the glass substrate 10, the reflection layer 20 is used for reflecting sunlight, the glass substrate 10 has a width D1 perpendicular to the driving direction and a length D2 along the driving direction, the ratio D2 / D1 of the length D2 to the width D1 is ≥1, the glass substrate 10 has a light transmission area 101 and a sunshade area 102 above the light transmission area 101.

[0040] The visible light transmittance of the light transmission area 101 is ≥70%, the reflection layer 20 is provided in the sunshade area 102, the sunshade area 102 has a total solar transmittance TTS, the total solar transmittance TTS is ≤35%.

[0041] The first direction is the direction perpendicular to the driving direction after the panoramic glass 1 is installed to the vehicle body. The second direction is the driving direction after the panoramic glass 1 is installed to the vehicle body. The ratio of the length D2 of the glass substrate 10 to D1 is D2 / D1≥1, which can be 1.02, or 1.04, or 1.06, or 1.08, or 1.10, or 1.12, or 1.14, or 1.16, or 1.17, etc., thereby expanding the driver's field of view and improving the safety of driving. It can also be understood that the length D2 of the glass substrate 10 in the driving direction extends upward to the driver's head or the B-pillar of the vehicle.

[0042] The glass substrate 10 can be used as a front windshield, and can also be used as a rear windshield or a side window, thereby providing more display scene applications for the vehicle. Optionally, the material of the glass substrate 10 can be soda-lime glass, or high-aluminum glass, or lithium-aluminum glass, or borosilicate glass, etc. When the glass substrate 10 is used as a front windshield, the light transmission area 101 is used for the main viewing area of the driver to observe the external environment. The sunshade area 102 is used for sunshade, heat insulation and sun protection. The sunshade area 102 is located above the light transmission area 101, which can also be understood as the sunshade area 102 being located at the top of the glass substrate 10, and the sunshade area 102 being located directly above the driver.

[0043] The sunshade area 102 of the present application has a total solar transmittance TTS, TTS≤35%, which can be 15%, or 18%, or 20%, or 25%, or 28%, or 30%, or 32%, or 35%, etc., preferably, the total solar transmittance TTS is 15%-35%, more preferably, the total solar transmittance TTS is 15%-30%, further preferably, the total solar transmittance TTS is 15%-25%, thereby reducing the use rate of the cooling device in the vehicle, and using more energy of the vehicle for driving to improve the mileage of the vehicle.

[0044] The sunshade area 102 of the present application has an infrared reflectance IR for infrared light with a wavelength of 820nm-1100nm, IR≥70%, which can be 70%, or 75%, or 80%, or 85%, or 90%, or 95%, etc., preferably, IR≥75%, more preferably, IR≥80%, further preferably, IR≥85%, thereby improving the infrared reflectance of the sunshade area 102 for infrared light with a wavelength of 820nm-1100nm, to reduce the use rate of the cooling device in the vehicle, and use more energy of the vehicle for driving to improve the mileage of the vehicle. Specifically, please refer to FIG. 5, which is a spectrum diagram of the panoramic glass 1, the abscissa in the figure is the wavelength of the spectrum, and the ordinate is the spectrum reflectance. In the infrared light with a wavelength of 820nm-1100nm, the infrared reflectance IR≥70%, even IR≥80%.

[0045] The sunshade area 102 has a visible light transmittance TL, and the visible light transmittance TL is less than or equal to 10%, for example, 10%, or 9%, or 8%, or 7%, or 6%, or 5%, or 4%, or 3%, or 2%, or 1%, and preferably, the visible light transmittance TL is less than or equal to 5%, and more preferably, the visible light transmittance TL is less than or equal to 3%, thereby avoiding eye injury to the driver's eyes and improving the safety of driving.

[0046] The sunshade area 102 has a light reflectance RL on the inner surface of the panoramic glass 1, and the light reflectance RL is less than or equal to 10%, for example, 10%, or 9%, or 8%, or 7%, or 6%, or 5%, or 4%, or 3%, or 2%, or 1%, and preferably, the light reflectance RL is less than or equal to 5%, and more preferably, the light reflectance RL is less than or equal to 3%, thereby making the mirror effect of the panoramic glass 1 more obvious and improving the user experience.

[0047] Specifically, the sunshade area 102 has a Lab1 value of the reflection color of the visible light incident at an incident angle of 60°, a1 is less than or equal to 0 and b1 is less than or equal to 3, a1 is less than or equal to -1 and b1 is less than or equal to 2, or a1 is less than or equal to -2 and b1 is less than or equal to 2, or a1 is less than or equal to -3 and b1 is less than or equal to 1, or a1 is less than or equal to -4 and b1 is less than or equal to 1. The Lab1 value can be, for example, a1 is less than or equal to 0 and b1 is less than or equal to 3, or a1 is less than or equal to 0 and b1 is less than or equal to 2, or a1 is less than or equal to -1 and b1 is less than or equal to 3, or a1 is less than or equal to -1 and b1 is less than or equal to 2, or a1 is less than or equal to -1 and b1 is less than or equal to 1, or a1 is less than or equal to -2 and b1 is less than or equal to 2, or a1 is less than or equal to -2 and b1 is less than or equal to 1, or a1 is less than or equal to -3 and b1 is less than or equal to 2, or a1 is less than or equal to -3 and b1 is less than or equal to 1, or a1 is less than or equal to -4 and b1 is less than or equal to 2, or a1 is less than or equal to -4 and b1 is less than or equal to 1, and the like. By limiting the Lab1 value, the visible light reflection color of the panoramic glass 1 is close to or neutral, and the appearance color difference of the panoramic glass 1 under different observation angles is small, thereby improving the visual comfort.

[0048] The sunshade area 102 has a Lab2 value of the reflection color of the visible light incident at an incident angle of 90°, a2 is less than or equal to 0.5 and b2 is less than or equal to 4, or a2 is less than or equal to 0 and b2 is less than or equal to 2, or a2 is less than or equal to -2 and b2 is less than or equal to 0, or a2 is less than or equal to -4 and b2 is less than or equal to -2. The Lab2 value can be, for example, a2 is less than or equal to 0.5 and b2 is less than or equal to 4, or a2 is less than or equal to 0.5 and b2 is less than or equal to 3, or a2 is less than or equal to 0 and b2 is less than or equal to 4, or a2 is less than or equal to 0 and b2 is less than or equal to 3, or a2 is less than or equal to -1 and b2 is less than or equal to 3, or a2 is less than or equal to -1 and b2 is less than or equal to 2, or a2 is less than or equal to -2 and b2 is less than or equal to 3, or a2 is less than or equal to -2 and b2 is less than or equal to 2, or a2 is less than or equal to -3 and b2 is less than or equal to 2, or a2 is less than or equal to -3 and b2 is less than or equal to 1, or a2 is less than or equal to -4 and b2 is less than or equal to 0, or a2 is less than or equal to -4 and b2 is less than or equal to -1, or a2 is less than or equal to -4 and b2 is less than or equal to -2, and the like. By limiting the Lab2 value, the visible light reflection color of the panoramic glass 1 is close to or neutral, and the appearance color difference of the panoramic glass 1 under different observation angles is small, thereby improving the visual comfort.

[0049] The reflective layer 20 comprises a first reflective sub-layer 21 and / or a second reflective sub-layer 22. The first reflective sub-layer 21 comprises a plurality of polymer layers stacked together. The second reflective sub-layer 22 comprises at least one metal layer or metal alloy layer. For example, the reflective layer 20 only comprises the first reflective sub-layer 21. For another example, the reflective layer 20 only comprises the second reflective sub-layer 22. For yet another example, the reflective layer 20 comprises both the first reflective sub-layer 21 and the second reflective sub-layer 22.

[0050] Specifically, as shown in FIG. 3, the glass substrate 10 comprises a first glass plate 11, a bonding layer 12, a second glass plate 13, and a sunshade layer 14. The first glass plate 11 has a first surface 111 and a second surface 112. The second glass plate 13 has a third surface 131 and a fourth surface 132. The bonding layer 12 connects the second surface 112 and the third surface 131. The sunshade layer 14 is arranged between the second surface 112 and the third surface 131 and within the sunshade area 102. The reflective layer 20 is arranged between the second surface 112 and the third surface 131 and at least partially overlaps the area where the sunshade layer 14 is arranged.

[0051] The first glass plate 11 is an outer glass plate. The first glass plate 11 has a first surface 111 and a second surface 112. The first surface 111 faces away from the bonding layer 12 and contacts the environment outside the vehicle. The second surface 112 is close to the bonding layer 12. The second glass plate 13 is an inner glass plate. The second glass plate 13 has a third surface 131 and a fourth surface 132. The third surface 131 is close to the bonding layer 12. The fourth surface 132 faces away from the bonding layer 12 and contacts the environment inside the vehicle. The bonding layer 12 connects the second surface 112 and the third surface 131.

[0052] The first glass sheet 11 is transparent glass or colored glass, and is heat strengthened glass or strengthened glass. The thickness of the first glass sheet 11 is 1.6mm to 2.3mm, 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, and is heat strengthened glass or strengthened glass. The thickness of the second glass sheet 13 is 0.7mm to 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%, and further less than or equal to 0.01%. The visible light transmittance of the transparent glass is 80% to 95%. The total iron content (calculated as Fe2O3) of the colored glass is 0.1% to 0.8%, and preferably 0.1% to 0.5%. The visible light transmittance of the colored glass is 80% to 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%.

[0053] The bonding layer 12 is a transparent thermoplastic polymer film or a colored thermoplastic polymer film, and the thickness of the bonding layer 12 is 0.38mm to 2.28mm. For example, the thickness of the bonding 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 bonding 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 bonding layer 12 can be, but is not limited to, 80%, or 85%, or 90%, or 95%, etc. When the bonding 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 bonding 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.

[0054] The adhesive layer 12 can be a single layer structure or a multi-layer structure, such as a double layer structure, a triple layer structure, a quadruple layer structure, a quintuple layer structure, etc. The thickness of the single layer structure of the adhesive layer 12 is 0.38mm-0.76mm. 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.

[0055] The shading layer 14 is a colored film or a partially colored and partially transparent film, and the thickness of the shading layer 14 is 0.38mm-0.78mm. For example, the thickness of the shading layer 14 can be, but is not limited to, 0.38mm, or 0.48mm, or 0.58mm, or 0.68mm, or 0.78mm, or other values between them. The material of the shading layer 14 can be selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), and ionomer (SGP). The color of the shading layer 14 can be green, or blue, or gray, etc. The shading layer 14 has adhesion, for example, the shading layer 14 adheres to the third surface 131, adheres to the reflective layer 20. The shading layer 14 can also have other functions, such as the colored shading layer 14 serving 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 having a higher plasticizer content in the shading layer 14 to have a sound insulation function.

[0056] The shading layer 14 and the adhesive layer 12 are located between the second surface 112 and the third surface 131. For example, the shading layer 14 and the adhesive layer 12 are stacked. For example, the shading layer 14 is located on top of the adhesive layer 12. Alternatively, the shading layer 14 and the adhesive layer 12 are an integral structure, or the shading layer 14 and the adhesive layer 12 are a split structure.

[0057] For example, the reflective layer 20 is arranged between the second surface 112 and the adhesive layer 12. For example, the reflective layer 20 is arranged between the third surface 131 and the adhesive layer 12. For example, the adhesive layer 12 is a two-layer structure, and the reflective layer is located between the two adhesive layers 12. For example, the reflective layer 20 is arranged between the second surface 112 and the shading layer 14. For example, the reflective layer 20 is arranged between the third surface 131 and the shading layer 14. For example, the reflective layer 20 is arranged between the adhesive layer 12 and the shading layer 14.

[0058] As shown in FIG. 3, the first reflective sub-layer 21 is arranged between the adhesive layer 12 and the shading layer 14. The first reflective sub-layer 21 can be first mounted on the adhesive layer 12, and then the first glass plate 11, the shading layer 14, and the second glass plate 13 are bonded to obtain the panoramic glass 1.

[0059] In the present application, the physical thickness of the first reflective sub-layer 21 is 0.025mm-0.1mm, and can be exemplified as 0.025mm, or 0.03mm, or 0.035mm, or 0.04mm, or 0.045mm, or 0.05mm, or 0.055mm, or 0.06mm, or 0.065mm, or 0.07mm, or 0.075mm, or 0.08mm, or 0.085mm, or 0.09mm, or 0.095mm, or 0.1mm, etc., preferably, the physical thickness of the first reflective sub-layer 21 is 0.05mm-0.1mm. Specifically, the first reflective sub-layer 21 is a multilayer structure, which can be a double-layer structure, or a three-layer structure, or a four-layer structure, or a five-layer structure, etc. The multilayer structure is composed of the superimposed "low refractive index layer / high refractive index layer" stacked in sequence. The material of the polymer layer includes at least one of PET, PETG, PCTG. By limiting the material of the first reflective sub-layer 21, the influence of the first reflective sub-layer 21 on the signal is reduced, and the sensor in the vehicle is more easily to send and receive signals.

[0060] Further, the glass substrate 10 also has a shielding area 103 surrounding the light-transmitting area 101 and the sun-shading area 102, and the glass substrate 10 further comprises a shielding layer 15, which is arranged in the shielding area 103, and the shielding layer 15 is arranged on at least one of the second surface 112, the third surface 131, and the fourth surface 132.

[0061] The shielding layer 15 can also be understood as a printing layer, and the color of the shielding layer 15 is not limited to black, but can also be other colors. The material of the shielding layer 15 is selected from at least one of dark-colored ink, opaque polymer film, and light-adjustable film.

[0062] The dark-colored ink can be ceramic ink or ultraviolet ink, which is printed on the second surface 112 and / or the third surface 131 and / or the fourth surface 132 by a process such as screen printing, inkjet printing, etc., and forms the shielding layer 15 after curing or high-temperature sintering; the thickness of the shielding layer 15 formed by the dark-colored ink is 5μm-40μm.

[0063] The opaque polymer film can be a bulk-colored polymer film, for example, adding a black or brown coloring component in the polymer film manufacturing process, etc.; can also be a polymer film printed with a surface ink, paint or pigment, for example, printing a black ink, black paint or brown pigment on the surface of the polymer film, etc.; can also be a dyed or colored polymer film, for example, 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.

[0064] 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%, for example, 3%, 2%, 1%, 0.5%, 0%. In addition, the maximum visible light transmittance of the light modulation film is set as needed, for example, 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%, or between 0.5% and 50%, or between 0% and 70%, etc. The light modulation film can meet the requirements of visible light transmittance in multiple scenarios, for example, when black edge 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.

[0065] The reflective layer 20 is farther away from the edge of the glass substrate 10 than the shielding layer 15. The distance L from the reflective layer 20 to the edge of the glass substrate 10 is greater than or equal to 3 mm, for example, 3 mm, or 4 mm, or 5 mm, or 6 mm, or 7 mm, or 8 mm, or 9 mm, or 10 mm, etc. Preferably, the distance L from the reflective layer 20 to the edge of the glass substrate 10 is greater than or equal to 5 mm. More preferably, the distance L from the reflective layer 20 to the edge of the glass substrate 10 is greater than or equal to 8 mm. Further preferably, the distance L from the reflective layer 20 to the edge of the glass substrate 10 is greater than or equal to 10 mm. By limiting the gap between the reflective layer 20 and the edge of the glass substrate 10, the contact between the reflective layer 20 and the air is reduced, the reflective layer 20 is protected, and the service life of the panoramic glass 1 is improved.

[0066] As shown in FIG. 4, the second reflective sub-layer 22 is disposed between the second surface 112 and the sunshade layer 14. At this time, the adhesive layer 12 is located below the sunshade layer 14 and is not shown in FIG. 4. The second reflective sub-layer 22 can be directly deposited on the second surface 112 by a chemical vapor deposition (CVD) or a physical vapor deposition (PVD) method, such as a magnetron sputtering deposition. Preferably, the second reflective sub-layer 22 can withstand high-temperature heat treatment, such as heat treatment processes in bending processes such as baking or tempering.

[0067] The second reflective sub-layer 22 includes at least one metal layer or metal alloy layer, and the number of the metal layer or metal alloy layer is 1-5. The material of the metal layer or metal alloy layer includes at least one metal or metal alloy of Au, Ag, Cu, Al, Mo, and Pt. For example, the second reflective sub-layer 22 is composed of three metal layers made of Ag. The physical thickness of the second reflective sub-layer 22 is 15-50 nm, and specific examples can be 15 nm, 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 45 nm, or 50 nm.

[0068] The sunshade layer is a colored sunshade layer, and the visible light transmittance of the colored sunshade layer is ≤10%, and specific examples can be 8%, 5%, or 3%.

[0069] The sunshade layer has a colored area and a non-colored area, and the total solar energy transmittance TTS of the panoramic glass corresponding to the colored area is ≤35%. The non-colored area is connected to the light-transmitting area, and the colored area is farther away from the light-transmitting area than the non-colored area. The visible light transmittance of the non-colored area is ≥20%, and the visible light transmittance of the colored area is ≤10%, and specific examples of the visible light transmittance of the colored area can be 8%, 5%, or 3%. For example, the sunshade layer is located in the colored area. For another example, the sunshade layer is located in the colored area and the non-colored area. The total solar energy transmittance TTS of the panoramic glass corresponding to the colored area is ≤35% to reduce the use rate of the cooling device in the vehicle and use more energy of the vehicle for driving to improve the mileage of the vehicle.

[0070] The application also provides a vehicle including a vehicle body and the panoramic glass provided in the above-mentioned application, and the panoramic glass is disposed on the vehicle body. The panoramic glass is installed at an opening of the vehicle body. When the panoramic glass is installed on the vehicle, it is preferably used as a front windshield of the vehicle. However, it is not limited to this, and the window assembly can also be used as a rear windshield or a side window to provide more display scene applications for the vehicle.

[0071] In order to make the purposes and advantages of the present application more clear, the effects of the panoramic glass of the present application are further described in detail below in combination with specific examples.

[0072] In examples 1-6, the reflective layer is disposed on the glass substrate, and in examples 1-6, the sunshade layer is a colored sunshade layer.

[0073] Example 1: first glass plate 2.1 mm / adhesive layer 0.38 mm / first reflective sub-layer 0.05 μm / sunshade layer 0.76 mm / second glass plate 2.1 mm. Among them, the first glass plate and the second glass plate are both white glass.

[0074] Example 2: first glass plate 2.3 mm / adhesive layer 0.38 mm / first reflective sub-layer 0.05 μm / sunshade layer 0.76 mm / second glass plate 2.1 mm. Among them, the first glass plate is green glass, and the second glass plate is white glass.

[0075] Example 3: first glass plate 2.1 mm / adhesive layer 0.38 mm / first reflective sub-layer 0.05 μm / sunshade layer 0.76 mm / second glass plate 2.1 mm. Among them, the first glass plate is green glass, and the second glass plate is white glass, and the light transmittance of the first reflective sub-layer is 75%.

[0076] Example 4: first glass plate 2.1 mm / adhesive layer 0.38 mm / first reflective sub-layer 0.05 μm / sunshade layer 0.76 mm / second glass plate 2.1 mm. Among them, the first glass plate is green glass, and the second glass plate is white glass, and the light transmittance of the first reflective sub-layer is 70%.

[0077] Example 5: first glass plate 2.3 mm / second reflective sub-layer 0.05 μm / sunshade layer 0.76 mm / second glass plate 2.1 mm. Among them, the first glass plate is white glass, and the second glass plate is green glass.

[0078] Example 6: first glass plate 2.3 mm / second reflective sub-layer 0.05 μm / sunshade layer 0.76 mm / second glass plate 2.1 mm. Among them, the first glass plate and the second glass plate are both white glass.

[0079] Table 1: Performance parameters of the panoramic glass of examples 1-6

[0080] As can be seen from Table 1, in the panoramic glass of Examples 1-6, TTS≤35%, TL≤3%, RL≤5%, and a1≤0 and b1≤3, a2≤0.5 and b2≤4, it can be seen that by arranging the reflective layer on the glass substrate, and the reflective layer is arranged in the sunshade area, not only can the panoramic glass provide the driver with a wider field of view, but also the reflective layer can reduce the use of the cooling device in the vehicle by reflecting sunlight, use more energy of the vehicle for driving to improve the mileage of the vehicle, and the reflective layer can also achieve the effect of sun protection to avoid the driver's eyes being injured, and improve the safety of driving. Moreover, by limiting the Lab1 value and the Lab2 value, the visible light reflection color of the panoramic glass is close to or neutral, the appearance color difference of the panoramic glass under different observation angles is small, and the visual comfort is improved.

[0081] In Example 7, the reflective layer is arranged on the glass substrate.

[0082] Example 7: first glass plate 2.3 mm / adhesive layer 0.38 mm / first reflective sub-layer 0.05 μm / sunshade layer 0.76 mm / second glass plate 2.1 mm. The sunshade layer of Example 7 has a colored area and a non-colored area.

[0083] Table 2: performance parameters of the panoramic glass of Example 7

[0084] As can be seen from Table 2, the total solar transmittance TTS of the panoramic glass corresponding to the colored area is ≤35%, so as to reduce the use of the cooling device in the vehicle, use more energy of the vehicle for driving to improve the mileage of the vehicle.

[0085] The above describes the content provided by the embodiments of the present application in detail, and 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 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 range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A panoramic glass, characterized by, The panoramic glass comprises a glass substrate and a reflective layer provided on the glass substrate, the reflective layer is used for reflecting sunlight, the glass substrate has a width D1 along a first direction and a length D2 along a second direction, the first direction and the second direction are perpendicular to each other, the ratio of the length D2 to the width D1 is D2 / D1≥1, the glass substrate has a light transmission area and a sunshade area above the light transmission area; The visible light transmittance of the light transmission area is ≥70%, the reflective layer is provided in the sunshade area, and the sunshade area has a total solar transmittance TTS, and the total solar transmittance TTS≤35%.

2. The panoramic glass according to claim 1, wherein The total solar transmittance TTS is 15%-35%, or 15%-30%, or 15%-25%.

3. The panoramic glass according to claim 1, wherein The sunshade area has an infrared light reflectivity IR for infrared light with a wavelength of 820 nm-1100 nm, and the infrared light reflectivity IR≥70%, or IR≥75%, or IR≥80%, or IR≥85%.

4. The panoramic glass according to claim 1, wherein The sunshade area has a visible light transmittance TL, and the visible light transmittance TL≤10%, or TL≤5%, or TL≤3%.

5. The panoramic glass according to claim 1, wherein The inner surface of the panoramic glass corresponding to the sunshade area has a light reflectivity RL, and the light reflectivity RL≤10%, or RL≤5%, or RL≤3%.

6. The panoramic glass according to claim 1, wherein The sunshade area has Lab1 values for the reflected color of visible light incident at an incident angle of 60°, a1≤0 and b1≤3, or a1≤-1 and b1≤2, or a1≤-2 and b1≤2, or a1≤-3 and b1≤1, or a1≤-4 and b1≤1.

7. The panoramic glass according to claim 1, wherein The sunshade area has Lab2 values for the reflected color of visible light incident at an incident angle of 90°, a2≤0.5 and b2≤4, or a2≤0 and b2≤2, or a2≤-1 and b2≤0, or a2≤-4 and b2≤-2.

8. The panoramic glass according to claim 1, wherein The glass substrate comprises a first glass plate, a bonding layer, a second glass plate, and a sunshade layer, the first glass plate has a first surface and a second surface, the second glass plate has a third surface and a fourth surface, the bonding layer connects the second surface and the third surface, the sunshade layer is provided between the second surface and the third surface and in the sunshade area, and the reflective layer is provided between the second surface and the third surface and at least partially overlaps with the area where the sunshade layer is located.

9. The panoramic glass according to claim 8, wherein The reflective layer comprises a first reflective sub-layer and / or a second reflective sub-layer, the first reflective sub-layer comprises a plurality of polymer layers stacked, and the second reflective sub-layer comprises at least one metal layer or metal alloy layer.

10. The panoramic glass according to claim 9, wherein The reflective layer comprises the first reflective sub-layer, and the physical thickness of the first reflective sub-layer is 0.025 mm-0.1 mm, or 0.05 mm-0.1 mm.

11. The panoramic glass according to claim 9, wherein The reflective layer comprises the first reflective sub-layer, and the material of the polymer layer comprises at least one of PET, PETG, and PCTG.

12. The panoramic glass according to claim 9, wherein The reflective layer comprises the second reflective sub-layer, and the material of the metal layer or metal alloy layer comprises at least one metal or metal alloy of Au, Ag, Cu, Al, Mo, and Pt.

13. The panoramic glass according to claim 9, wherein The reflective layer comprises the second reflective sub-layer, and a physical thickness of the second reflective sub-layer 22 is 15-50 nm.

14. The panoramic glass according to claim 8, wherein The glass substrate further has a shielding area surrounding the light-transmitting area and the sun-shading area, and the glass substrate further comprises a shielding layer, which is arranged in the shielding area and is arranged on at least one of the second face, the third face and the fourth face.

15. The panoramic glass according to claim 14, 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.

16. The panoramic glass of claim 1, wherein, The edge distance L of the reflective layer to the glass substrate is ≥3 mm, or ≥5 mm, or ≥8 mm, or ≥10 mm.

17. The panoramic glass of claim 8, wherein, The sun-shading layer is a colored sun-shading layer, and a visible light transmittance of the colored sun-shading layer is ≤10%. Alternatively, the sun-shading layer has a colored area and a non-colored area, a visible light transmittance of the colored area is ≤10%, a visible light transmittance of the non-colored area is ≥20%, and a total solar energy transmittance TTS of the panoramic glass corresponding to the colored area is ≤35%.

18. The panoramic glass of claim 8, wherein, The thickness of the sun-shading layer is 0.38-0.78 mm.

19. The panoramic glass of claim 8, wherein, The material of the sun-shading layer is selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA) and ion-type polymer (SGP).

20. A vehicle characterized by comprising: The vehicle comprises a vehicle body and the panoramic glass according to any one of claims 1-19, and the panoramic glass is arranged on the vehicle body.

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