Panoramic glass and vehicle

Abstract

The invention provides panoramic glass and a vehicle, the panoramic glass comprises a glass substrate and a reflecting layer arranged on the glass substrate, the glass substrate has the width D1 in the first direction and the length D2 in the second direction, the ratio D2 / D1 of the length D2 to the width D1 is larger than or equal to 1, and the glass substrate is provided with a light-transmitting area and a sunshade area located above the light-transmitting area; the reflecting layer is arranged in the sunshade area, and the total solar transmittance TTS of the sunshade area is smaller than or equal to 35%. According to the panoramic glass, the reflecting layer is arranged on the glass substrate and is arranged in the sunshade area, so that the panoramic glass can bring a wider visual field to a driver, the reflecting layer reflects sunlight, the total solar transmittance TTS of the sunshade area is smaller than or equal to 35%, the utilization rate of a refrigerating device in a vehicle is reduced, more vehicle energy is used for driving, and the driving safety is improved. In addition, the reflecting layer can further achieve the sun-proof effect, eyes of a driver are prevented from being dazzling, and the driving safety is improved.

Description

Technical Field

[0001] The present application belongs to the field of glass technology, and specifically relates to panoramic glass and vehicles. Background Art

[0002] As user demands continue to increase, in order to expand the driver's field of vision, the longitudinal length of the front windshield of the vehicle is extended to the rear of the front seats, that is, the B-pillar, to increase the top field of vision of the front windshield, turning the traditional front windshield into 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 inside the vehicle, which reduces the user experience. Summary of the invention

[0003] In view of this, a first aspect of the present application provides a panoramic glass, comprising a glass substrate and a reflective layer disposed on the glass substrate, the reflective layer being used to reflect 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, a ratio D2 / D1 of the length D2 to the width D1 being ≥1, the glass substrate having a light-transmitting area and a sunshade area located above the light-transmitting area;

[0004] The visible light transmittance of the light-transmitting area is ≥70%, the reflective layer is arranged in the sunshade area, the sunshade area has a total solar energy transmittance TTS, and the total solar energy transmittance TTS is ≤35%.

[0005] Wherein, the total solar energy transmittance TTS is 15% to 35%, or 15% to 30%, or 15% to 25%.

[0006] The sunshade area has an infrared light reflectivity IR for infrared light with a wavelength of 820nm-1100nm, and the infrared light reflectivity IR is ≥70%, or IR ≥75%, or IR ≥80%, or IR ≥85%.

[0007] Wherein, the sunshade area has a visible light transmittance TL, and the visible light transmittance TL≤10%, or TL≤5%, or TL≤3%.

[0008] 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%.

[0009] The reflected color of the sunshade area for visible light incident at an incident angle of 60° has a Lab1 value, 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.

[0010] The reflected color of the sunshade area for visible light incident at an incident angle of 90° has a Lab2 value, a2≤0.5 and b2≤4, or a2≤0 and b2≤2, or a2≤-1 and b2≤0, or a2≤-4 and b2≤-2.

[0011] The glass substrate includes a first glass plate, an adhesive 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 adhesive layer connects the second surface and the third surface, the sunshade layer is arranged between the second surface and the third surface and in the sunshade area, and the reflective layer is arranged between the second surface and the third surface and at least partially overlaps with the area where the sunshade layer is located.

[0012] The reflective layer includes a first reflective sublayer and / or a second reflective sublayer, the first reflective sublayer includes a plurality of stacked polymer layers, and the second reflective sublayer includes at least one metal layer or metal alloy layer.

[0013] The reflective layer includes the first reflective sublayer, and the physical thickness of the first reflective sublayer is 0.025 mm to 0.1 mm, or 0.05 mm to 0.1 mm.

[0014] The reflective layer includes the first reflective sublayer, and the material of the polymer layer includes at least one of PET, PETG, and PCTG.

[0015] The reflective layer includes the second reflective sublayer, and the material of the metal layer or the metal alloy layer includes at least one metal or metal alloy of Au, Ag, Cu, Al, Mo, and Pt.

[0016] The glass substrate further comprises a shielding area surrounding the light-transmitting area and the sun-shielding area, and the glass substrate further comprises a shielding layer, which is arranged in the shielding area and on at least one of the second surface, the third surface and the fourth surface.

[0017] Wherein, the distance from the reflective layer to the edge of the glass substrate is L≥3mm, or L≥5mm, or L≥8mm, or L≥10mm.

[0018] Wherein, the sunshade layer is a colored sunshade layer, and the visible light transmittance of the colored sunshade layer is ≤10%;

[0019] Alternatively, the sunshade layer has a tinted area and a non-tinted area, the visible light transmittance of the tinted area is ≤10%, the visible light transmittance of the non-tinted area is ≥50%, and the total solar transmittance TTS of the panoramic glass corresponding to the tinted area is ≤35%.

[0020] A second aspect of the present application provides a vehicle, comprising a vehicle body, and the panoramic glass provided in the first aspect of the present application, wherein the panoramic glass is arranged on the vehicle body.

[0021] The panoramic glass and vehicle provided by the present application, by arranging a reflective layer on the glass substrate, and the reflective layer is arranged in the sun-shading area, not only ensuring that the panoramic glass can provide the driver with a wider field of view, but also the reflective layer reflects sunlight so that the total solar energy transmittance TTS of the sun-shading area is ≤35%, thereby reducing the utilization rate of the refrigeration device in the vehicle, and using more of the vehicle's energy for driving, so as to increase the vehicle's mileage. The reflective layer can also achieve a sun protection effect, avoiding the driver's eyes from being hurt, thereby improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the implementation modes of the present application will be described below.

[0023] Figure 1 A schematic top view of a panoramic glass in one embodiment provided in the present application.

[0024] Figure 2 A schematic cross-sectional view of the panoramic glass provided in this application.

[0025] Figure 3 A schematic partial cross-sectional view of a first reflective sublayer provided in the present application.

[0026] Figure 4 A schematic partial cross-sectional view of a second reflective sublayer provided in the present application.

[0027] Figure 5 Spectrum diagram of the panoramic glass provided for this application.

[0028] Explanation of reference numerals: panoramic glass 1, glass substrate 10, light-transmitting area 101, sunshade area 102, shielding area 103, first glass plate 11, first surface 111, second surface 112, adhesive layer 12, second glass plate 13, third surface 131, fourth surface 132, sunshade layer 14, shielding layer 15, reflective layer 20, first reflective sublayer 21, second reflective sublayer 22. DETAILED DESCRIPTION

[0029] The following are preferred implementations of the present application. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

[0030] Unless otherwise specified or there is a contradiction, the terms and phrases used in this application have the following meanings:

[0031] In this application, "first", "second", etc. are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0032] In this application, "one or several" refers to any one, any two or more of the listed items. Among them, "several" refers to any two or more of the listed items.

[0033] The value of x in the chemical formula: if it is clearly defined, it shall be within the defined range. If it is not clearly defined, it can be determined based on the deposition in a stoichiometric, substoichiometric or superstoichiometric manner in the magnetron sputtering process.

[0034] like Figure 1-Figure 4 As shown, the present application provides a panoramic glass 1, which includes a glass substrate 10 and a reflective layer 20 arranged on the glass substrate 10, wherein the reflective layer 20 is used to reflect sunlight, the glass substrate 10 has a width D1 perpendicular to a driving direction and a length D2 along the driving direction, and a ratio of the length D2 to the width D1 is D2 / D1≥1, and the glass substrate 10 has a light-transmitting area 101 and a sunshade area 102 located above the light-transmitting area 101.

[0035] The visible light transmittance of the light-transmitting area 101 is ≥70%, the reflective layer 20 is arranged in the sunshade area 102, and the sunshade area 102 has a total solar energy transmittance TTS, and the total solar energy transmittance TTS is ≤35%.

[0036] The first direction is the direction perpendicular to the driving direction after the panoramic glass 1 is installed on the vehicle body. The second direction is the direction of the driving direction after the panoramic glass 1 is installed on the vehicle body. The ratio of the length D2 of the glass substrate 10 to D1 is D2 / D1≥1, which can be specifically exemplified as 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 vision and improving driving safety. It can also be understood that the length D2 of the glass substrate 10 in the driving direction extends upward to the top of the driver of the vehicle or the B-pillar of the vehicle.

[0037] The glass substrate 10 can be used as a front windshield, a rear windshield, or a side window glass, thereby providing more display scene applications for the vehicle. Optionally, the material of the glass substrate 10 can be soda-lime glass, high-aluminum glass, lithium-aluminum glass, borosilicate glass, etc. When the glass substrate 10 is used as a front windshield, the light-transmitting area 101 is used for the driver's main viewing area to observe the external environment. The sunshade area 102 is used for shading, heat insulation, and sun protection. The sunshade area 102 is located above the light-transmitting area 101, and it can also be understood that the sunshade area 102 is located at the top of the glass substrate 10, and the sunshade area 102 is located directly above the driver.

[0038] The sunshade area 102 of the present application has a total solar transmittance TTS, TTS≤35%, specifically 15%, or 18%, or 20%, or 25%, or 28%, or 30%, or 32%, or 35%, etc. Preferably, the total solar transmittance TTS is 15% to 35%, more preferably, the total solar transmittance TTS is 15% to 30%, and further preferably, the total solar transmittance TTS is 15% to 25%, thereby reducing the usage rate of the refrigeration device in the vehicle and using more of the vehicle's energy for driving to increase the vehicle's mileage.

[0039] The sunshade area 102 of the present application has an infrared light reflectivity IR for infrared light with a wavelength of 820nm-1100nm, and the infrared light reflectivity IR is ≥70%, and specifically, for example, 70%, or 75%, or 80%, or 85%, or 90%, or 95%, etc. Preferably, the infrared light reflectivity IR is ≥75%, and more preferably, the infrared light reflectivity IR is ≥80%, and further preferably, the infrared light reflectivity IR is ≥85%, thereby improving the infrared light reflectivity of the sunshade area 102 for infrared light with a wavelength of 820nm-1100nm, so as to reduce the usage rate of the refrigeration device in the vehicle, and use more vehicle energy for driving, so as to improve the mileage of the vehicle. Specifically, please refer to Figure 5 , Figure 5 The spectrum diagram of the panoramic glass 1 is shown in FIG. 1 , where the horizontal axis is the wavelength of the spectrum and the vertical axis is the spectrum reflectance. In the infrared light of 820nm-1100nm, the infrared light reflectance IR≥70%, or even IR≥80%.

[0040] The sunshade area 102 of the present application has a visible light transmittance TL, and the visible light transmittance TL is ≤10%. Specifically, it can be exemplified by 10%, or 9%, or 8%, or 7%, or 6%, or 5%, or 4%, or 3%, or 2%, or 1%, etc. Preferably, the visible light transmittance TL is ≤5%, and more preferably, the visible light transmittance TL is ≤3%, thereby avoiding eye injuries to the driver and improving driving safety.

[0041] The inner surface of the panoramic glass 1 corresponding to the sunshade area 102 of the present application has a light reflectivity RL, and the light reflectivity RL is ≤10%. Specifically, it can be 10%, or 9%, or 8%, or 7%, or 6%, or 5%, or 4%, or 3%, or 2%, or 1%, etc. Preferably, the light reflectivity RL is ≤5%, and more preferably, the light reflectivity RL is ≤3%, so that the mirror effect of the panoramic glass 1 is more obvious, thereby improving the user experience.

[0042] Specifically, the reflection color of the sunshade area 102 for visible light incident at an incident angle of 60° has a Lab1 value, a1≤0 and b1≤3, a1≤-1 and b1≤2, or a1≤-2 and b1≤2, or a1≤-3 and b1≤1, or a1≤-4 and b1≤1. Specific examples of the Lab1 value include a1≤0 and b1≤3, or a1≤0 and b1≤2, or a1≤-1 and b1≤3, or a1≤-1 and b1≤2, or a1≤-1 and b1≤1, or a1≤-2 and b1≤2, or a1≤-2 and b1≤1, or a1≤-3 and b1≤2, or a1≤-3 and b1≤1, or a1≤-4 and b1≤2, or a1≤-4 and b1≤1, etc. By limiting the Lab1 value, the visible light reflection color of the panoramic glass 1 is close to or neutral, so that the appearance color difference of the panoramic glass 1 at different observation angles is small, thereby improving the visual comfort.

[0043] The reflection color of the sunshade area 102 to the visible light incident at an incident angle of 90° has a Lab2 value, a2≤0.5 and b2≤4, or a2≤0 and b2≤2, or a2≤-2 and b2≤0, or a2≤-4 and b2≤-2. Specific examples of the Lab2 value include a2≤0.5 and b2≤4, or a2≤0.5 and b2≤3, or a2≤0 and b2≤4, or a2≤0 and b2≤3, or a2≤-1 and b2≤3, or a2≤-1 and b2≤2, or a2≤-2 and b2≤3, or a2≤-2 and b2≤2, or a2≤-3 and b2≤2, or a2≤-3 and b2≤1, or a2≤-4 and b2≤0, or a2≤-4 and b2≤-1, or a2≤-4 and b2≤-2, etc. By limiting the Lab2 value, the visible light reflection color of the panoramic glass 1 is close to or neutral, so that the appearance color difference of the panoramic glass 1 at different observation angles is small, thereby improving the visual comfort.

[0044] The reflective layer 20 includes a first reflective sublayer 21 and / or a second reflective sublayer 22, the first reflective sublayer 21 includes a plurality of stacked polymer layers, and the second reflective sublayer 22 includes at least one metal layer or metal alloy layer. For example, the reflective layer 20 includes only the first reflective sublayer 21. For another example, the reflective layer 20 includes only the second reflective sublayer 22. For another example, the reflective layer 20 includes both the first reflective sublayer 21 and the second reflective sublayer 22.

[0045] Specifically, Figure 3 As shown, the glass substrate 10 includes a first glass plate 11, an adhesive 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 adhesive 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 is arranged in 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 with the area where the sunshade layer 14 is located.

[0046] The first glass plate 11 serves as an outer glass plate, and has a first surface 111 and a second surface 112. The first surface 111 faces 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 plate 13 serves as an inner glass plate, and 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 faces 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.

[0047] The first glass plate 11 is transparent glass or tinted glass, heat-strengthened glass or tempered glass, the thickness of the first glass plate 11 is 1.6 mm to 2.3 mm, and the visible light transmittance of the first glass plate 11 is greater than or equal to 80%. The second glass plate 13 is transparent glass or tinted glass, heat-strengthened glass or tempered glass, the thickness of the second glass plate 13 is 0.7 mm to 4 mm, and the visible light transmittance of the second glass plate 13 is greater than or equal to 80%. The total iron content (in terms of Fe2O3) of the transparent glass is less than or equal to 0.1%, or even less than or equal to 0.05%, or further less than or equal to 0.01%, and the visible light transmittance of the transparent glass is 80% to 95%; the total iron content (in terms of Fe2O3) of the colored glass is 0.1% to 0.8%, preferably 0.1% to 0.5%, and the visible light transmittance of the colored glass is 80% to 90%. For example, the first glass plate 11 can be a transparent glass with a thickness of 2.1 mm and a visible light transmittance of 89%, and the second glass plate 13 can be a green glass with a thickness of 1.6 mm and a visible light transmittance of 83%, or a green glass with a thickness of 2.1 mm and a visible light transmittance of 80%.

[0048] Wherein, 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 ionic polymer (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 may be, but is not limited to, 80%, 85%, or 90%. The colored thermoplastic polymer film may be a gray thermoplastic polymer film, a green thermoplastic polymer film, or a blue thermoplastic polymer film.

[0049] Exemplarily, the adhesive layer 12 may be a single-layer structure or a multi-layer structure, and the multi-layer structure may be exemplified by a double-layer structure, a three-layer structure, a four-layer structure, a five-layer structure, etc. The thickness of the adhesive layer 12 of the single-layer structure is 0.38 mm to 0.76 mm. The adhesive layer 12 may also have other functions, such as providing at least one colored area as a shadow band to reduce the interference of sunlight to 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 at least one layer of the multi-layer structure has a higher plasticizer content to have a sound insulation function.

[0050] The sunshade layer 14 is a colored film or a partially colored and partially transparent film, and the thickness of the sunshade layer 14 is 0.38 mm to 0.78 mm. For example, the thickness of the sunshade layer 14 can be, but is not limited to, 0.38 mm, 0.48 mm, 0.58 mm, 0.68 mm, or other values ​​between 0.78 mm. The material of the sunshade layer 14 can be selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA) and ionic polymer (SGP). The color of the sunshade layer 14 can be green, blue, gray, etc. The sunshade layer 14 has adhesiveness, for example, the sunshade layer 14 is bonded to the third surface 131 and the reflective layer 20. The sunshade layer 14 may also have other functions, such as a colored sunshade layer 14 used as a shadow band to reduce the interference of sunlight to the human eye, or adding an infrared absorber to have a sun protection or heat insulation function, or the sunshade layer 14 has a higher plasticizer content to have a sound insulation function.

[0051] The sunshade layer 14 and the adhesive layer 12 are both located between the second surface 112 and the third surface 131. For example, the sunshade layer 14 and the adhesive layer 12 are stacked. For another example, the sunshade layer 14 is located on top of the adhesive layer 12. Optionally, the sunshade layer 14 and the adhesive layer 12 are an integrated structure, or the sunshade layer 14 and the adhesive layer 12 are a split structure.

[0052] For example, the reflective layer 20 is disposed between the second surface 112 and the adhesive layer 12. For another example, the reflective layer 20 is disposed between the third surface 131 and the adhesive layer 12. For another example, the adhesive layer 12 is a two-layer structure, and the reflective layer is located between the two adhesive layers 12. For another example, the reflective layer 20 is disposed between the second surface 112 and the sunshade layer 14. For another example, the reflective layer 20 is disposed between the third surface 131 and the sunshade layer 14. For another example, the reflective layer 20 is disposed between the adhesive layer 12 and the sunshade layer 14.

[0053] like Figure 3 As shown, the first reflective sublayer 21 is disposed between the adhesive layer 12 and the sunshade layer 14. The first reflective sublayer 21 can be first installed on the adhesive layer 12, and then assembled with the first glass plate 11, the sunshade layer 14, and the second glass plate 13 to obtain the panoramic glass 1.

[0054] In the present application, the physical thickness of the first reflective sublayer 21 is 0.025 mm to 0.1 mm, and specifically, 0.025 mm, or 0.03 mm, or 0.035 mm, or 0.04 mm, or 0.045 mm, or 0.05 mm, or 0.055 mm, or 0.06 mm, or 0.065 mm, or 0.07 mm, or 0.075 mm, or 0.08 mm, or 0.085 mm, or 0.09 mm, or 0.095 mm, or 0.1 mm, etc. Preferably, the physical thickness of the first reflective sublayer 21 is 0.05 mm to 0.1 mm. Specifically, the first reflective sublayer 21 is a multilayer structure, and the multilayer structure 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 "low refractive index layer / high refractive index layer" stacked in sequence. The material of the polymer layer includes at least one of PET, PETG, and PCTG. By limiting the material of the first reflective sublayer 21, the influence of the first reflective sublayer 21 on the signal is reduced, so that the sensor in the vehicle can send and receive signals more easily.

[0055] In addition, the glass substrate 10 further has a shielding area 103 surrounding the light-transmitting area 101 and the sun-shading area 102 , and the glass substrate 10 further includes a shielding layer 15 , which is disposed in the shielding area 103 , and the shielding layer 15 is disposed on at least one of the second surface 112 , the third surface 131 , and the fourth surface 132 .

[0056] The shielding layer 15 can also be understood as a printed layer. 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 ink, opaque polymer film, and dimming film.

[0057] The dark 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 screen printing, inkjet printing or other processes, and is formed into a shielding layer 15 after curing or high-temperature sintering; the thickness of the shielding layer 15 formed by the dark ink is 5μm to 40μm.

[0058] The opaque polymer film can be a polymer film with body coloring, for example, black or brown coloring components are added during the manufacturing process of the polymer film; it can also be a polymer film with surface printed ink, paint or pigment, for example, black ink, black paint or brown pigment is printed on the surface of the polymer film; it can also be a dyed or colored polymer film, for example, black or brown dye is used to color the polymer film; 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 thermoplastic polymer films, and the opaque polymer film is sandwiched between the two thermoplastic polymer films.

[0059] The dimming 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 dimming 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 dimming film is set as needed, such as 10%, 20%, 30%, 50%, 70%, 80%, etc. For example: the visible light transmittance of the dimming film can be adjusted between 0% and 20%, between 0.5% and 50%, between 0% and 70%, etc. The dimming film can meet the requirements of visible light transmittance in multiple scenarios. For example, when black-border display is required, the dimming film is in an opaque state (visible light transmittance is less than or equal to 3%, or even 0%) to improve the contrast between the displayed image and the displayed background. When no display is performed, the dimming film is in a transparent state (visible light transmittance is greater than or equal to 70%) to achieve transparency in a larger area of ​​the vehicle window glass. The dimming film is arranged in the bonding layer 12. For example, the bonding layer 12 can be two thermoplastic polymer films, and the dimming film is sandwiched between the two thermoplastic polymer films.

[0060] The reflective layer 20 is farther away from the edge of the glass substrate 10 than the shielding layer 15. The edge distance L between the reflective layer 20 and the glass substrate 10 is ≥3 mm, and specifically, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc. Preferably, the edge distance L between the reflective layer 20 and the glass substrate 10 is ≥5 mm, more preferably, the edge distance L between the reflective layer 20 and the glass substrate 10 is ≥8 mm, and further preferably, the edge distance L between the reflective layer 20 and the glass substrate 10 is ≥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 increased.

[0061] like Figure 4As shown, the second reflective sublayer 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 Figure 4 The second reflective sublayer 22 can be directly deposited on the second surface 112 by chemical vapor deposition (CVD) or physical vapor deposition (PVD), for example, by magnetron sputtering. In addition, preferably, the second reflective sublayer 22 can withstand high temperature heat treatment, such as heat treatment process of bending process such as bending or tempering.

[0062] The second reflective sublayer 22 includes at least one metal layer or metal alloy layer, and the number of the metal layers or metal alloy layers 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 sublayer 22 is composed of 3 metal layers made of Ag. The physical thickness of the second reflective sublayer 22 is 15nm to 50nm, and specifically, 15nm, or 20nm, or 25nm, or 30nm, or 35nm, or 40nm, or 45nm, or 50nm, etc. can be exemplified.

[0063] The sunshade layer is a colored sunshade layer, and the visible light transmittance of the colored sunshade layer is ≤10%, and specifically can be 8%, 5%, 3%, etc. The colored sunshade layer can also achieve the effect of sun protection to avoid hurting the driver's eyes, and cooperate with the reflective layer to make the total solar transmittance TTS of the sunshade area ≤35%, so as to reduce the usage rate of the refrigeration device in the vehicle, use more vehicle energy for driving, and improve the mileage of the vehicle.

[0064] The sunshade layer has a tinted area and a non-tinted area, and the total solar transmittance TTS of the panoramic glass corresponding to the tinted area is ≤35%. The non-tinted area is connected to the light-transmitting area, and the tinted area is farther away from the light-transmitting area than the non-tinted area. The visible light transmittance of the non-tinted area is ≥20%, the visible light transmittance of the tinted area is ≤10%, and the visible light transmittance of the tinted area can be specifically exemplified as 8%, or 5%, or 3%, etc. For example, the sunshade layer is located in the tinted area. For another example, the sunshade layer is located in the tinted area and the non-tinted area. Among them, the total solar transmittance TTS of the panoramic glass corresponding to the tinted area is ≤35%, so as to reduce the usage rate of the refrigeration device in the vehicle, and use more of the vehicle's energy for driving, so as to increase the vehicle's mileage.

[0065] The present application also provides a vehicle, comprising a vehicle body, and the panoramic glass provided in the present application, wherein the panoramic glass is arranged 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 thereto, and the window assembly can also be used as a rear windshield or side window glass, thereby providing more display scene applications for the vehicle.

[0066] In order to make the purpose and advantages of the present application clearer, the effects of the panoramic glass of the present application are further described in detail below in conjunction with specific embodiments.

[0067] In Examples 1-6, the reflective layer is provided on the glass substrate for illustration. In Examples 1-6, the sunshade layer is a colored sunshade layer.

[0068] Embodiment 1: first glass plate 2.1 mm / adhesive layer 0.38 mm / first reflective sublayer 0.05 μm / sunshading layer 0.76 mm / second glass plate 2.1 mm. The first glass plate and the second glass plate are both made of clear glass.

[0069] Embodiment 2: first glass plate 2.3 mm / adhesive layer 0.38 mm / first reflective sublayer 0.05 μm / sunshading layer 0.76 mm / second glass plate 2.1 mm. The first glass plate is green glass and the second glass plates are both white glass.

[0070] Example 3: first glass plate 2.1 mm / adhesive layer 0.38 mm / first reflective sublayer 0.05 μm / sunshading layer 0.76 mm / second glass plate 2.1 mm. The first glass plate is green glass, the second glass plates are white glass, and the light transmittance of the first reflective sublayer is 75%.

[0071] Example 4: first glass plate 2.1 mm / adhesive layer 0.38 mm / first reflective sublayer 0.05 μm / sunshading layer 0.76 mm / second glass plate 2.1 mm. The first glass plate is green glass, the second glass plates are white glass, and the light transmittance of the first reflective sublayer is 70%.

[0072] Embodiment 5: first glass plate 2.3 mm / second reflective sublayer 0.05 μm / sunshading layer 0.76 mm / second glass plate 2.1 mm. The first glass plate is white glass, and the second glass plates are both green glass.

[0073] Embodiment 6: first glass plate 2.3 mm / second reflective sublayer 0.05 μm / sunshading layer 0.76 mm / second glass plate 2.1 mm. The first glass plate and the second glass plate are both made of clear glass.

[0074] Table 1: Performance parameters of panoramic glass of Examples 1-6

[0075]

[0076] 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, it is not only ensured that the panoramic glass can bring a wider field of view to the driver, but also the reflective layer reduces the utilization rate of the refrigeration device in the vehicle by reflecting sunlight, and uses more vehicle energy for driving to improve the mileage of the vehicle, and the reflective layer can also achieve the effect of sun protection, avoid the driver's eyes from being hurt, and improve driving safety. In addition, by limiting the Lab1 value and the Lab2 value, the visible light reflection color of the panoramic glass is close to or neutral, so that the appearance color difference of the panoramic glass at different observation angles is small, and the visual comfort is improved.

[0077] In Example 7, the reflective layer is provided on a glass substrate for illustration.

[0078] Example 7: first glass plate 2.3 mm / adhesive layer 0.38 mm / first reflective sublayer 0.05 μm / sunshading layer 0.76 mm / second glass plate 2.1 mm. The sunshading layer of Example 7 has a colored area and a non-colored area.

[0079] Table 2: Performance parameters of the panoramic glass of Example 7

[0080] Panoramic glass Coloring Area Non-colored area Total solar transmittance TTS (%) 27.17 53.54 Visible light transmittance TL (%) 1.67 65.17

[0081] It can be seen from Table 2 that the total solar transmittance TTS of the panoramic glass corresponding to the tinted area is ≤35%, so as to reduce the usage rate of the refrigeration device in the vehicle and use more vehicle energy for driving to improve the vehicle's mileage.

[0082] The above is a detailed introduction to the contents provided in the implementation mode of the present application. This article explains and illustrates the principles and implementation modes of the present application. The above explanation is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation mode and application scope. In summary, the contents of this specification should not be understood as limiting the present application.

Claims

1. A panoramic glass, characterized in that: The panoramic glass comprises a glass substrate and a reflective layer disposed on the glass substrate, the reflective layer is used to reflect 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, a ratio D2 / D1 of the length D2 to the width D1 is ≥1, and the glass substrate has a light-transmitting area and a sunshade area located above the light-transmitting area; The visible light transmittance of the light-transmitting area is ≥70%, the reflective layer is arranged in the sunshade area, the sunshade area has a total solar energy transmittance TTS, and the total solar energy transmittance TTS is ≤35%.

2. The panoramic glass according to claim 1, characterized in that: The total solar energy transmittance TTS is 15% to 35%, or 15% to 30%, or 15% to 25%.

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

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

6. The panoramic glass according to claim 1, characterized in that: The reflected color of the sunshade area for visible light incident at an incident angle of 60° has a Lab1 value, 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, characterized in that: The reflected color of the sunshade area to visible light incident at an incident angle of 90° has a Lab2 value, 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, characterized in that: The glass substrate includes a first glass plate, an adhesive 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 adhesive layer connects the second surface and the third surface, the sunshade layer is arranged between the second surface and the third surface and in the sunshade area, and the reflective layer is arranged 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, characterized in that: The reflective layer includes a first reflective sublayer and / or a second reflective sublayer, the first reflective sublayer includes a plurality of stacked polymer layers, and the second reflective sublayer includes at least one metal layer or a metal alloy layer.

10. The panoramic glass according to claim 9, characterized in that: The reflective layer includes the first reflective sublayer, and the physical thickness of the first reflective sublayer is 0.025 mm to 0.1 mm, or 0.05 mm to 0.1 mm.

11. The panoramic glass according to claim 9, characterized in that: The reflective layer includes the first reflective sublayer, and the material of the polymer layer includes at least one of PET, PETG, and PCTG.

12. The panoramic glass according to claim 9, characterized in that: The reflective layer includes the second reflective sublayer, and the material of the metal layer or the metal alloy layer includes at least one metal or metal alloy selected from Au, Ag, Cu, Al, Mo, and Pt.

13. The panoramic glass according to claim 8, characterized in that: The glass substrate further comprises a shielding area surrounding the light-transmitting area and the sun-shielding area. The glass substrate further comprises a shielding layer disposed in the shielding area and disposed on at least one of the second surface, the third surface and the fourth surface.

14. The panoramic glass according to claim 1, characterized in that: The distance from the reflective layer to the edge of the glass substrate is L≥3mm, or L≥5mm, or L≥8mm, or L≥10mm.

15. The panoramic glass according to claim 8, characterized in that: The sunshade layer is a colored sunshade layer, and the visible light transmittance of the colored sunshade layer is ≤10%; Alternatively, the sunshade layer has a tinted area and a non-tinted area, the visible light transmittance of the tinted area is ≤10%, the visible light transmittance of the non-tinted area is ≥20%, and the total solar transmittance TTS of the panoramic glass corresponding to the tinted area is ≤35%.

16. A vehicle, characterized in that: The vehicle comprises a vehicle body and the panoramic glass according to any one of claims 1 to 15, wherein the panoramic glass is arranged on the vehicle body.

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