Black edge display glass, black edge display system and vehicle

Abstract

The invention provides black edge display glass, a black edge display system and a vehicle. The black edge display glass comprises a light-transmitting area and a shielding area, the visible light transmittance of the light-transmitting area is larger than or equal to 70%, the visible light transmittance of the shielding area is smaller than or equal to 5%, and at least one display area is arranged in the shielding area. The black-edge display glass comprises an outer glass plate, an inner glass plate, a bonding layer, a shielding layer and an infrared reflecting layer, the outer glass plate, the bonding layer and the inner glass plate are sequentially stacked in the thickness direction of the black-edge display glass, and the bonding layer is bonded between the inner glass plate and the outer glass plate. The shielding layer is arranged between the outer glass plate and the bonding layer, and the shielding layer at least covers the display area. The infrared reflecting layer is arranged between the shielding layer and the bonding layer, and the infrared reflecting layer at least covers the display area. The black-edge display glass provided by the invention can increase the brightness ratio of the main image to the auxiliary image of the display image of the display area, reduce or even avoid ghosting of the display image, and improve the driving safety and the visual comfort.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a black-border display glass, a black-border display system and a vehicle. Background Art

[0002] With the development of vehicle intelligence, automation, and networking technologies, vehicles can provide various types of information to drivers and passengers, such as vehicle information, road information, social media information, and even entertainment information. This can generally be achieved by using glass black-bordered displays, head-up display systems (HUDs), instrument panels, central control screens, co-pilot displays, and their combinations to meet multi-format, near- and far-level display needs, thereby bringing passengers a more comfortable, safe, and intelligent experience and rich information.

[0003] Black-bordered displays are typically placed between the car's dashboard and the transparent viewing area of the windshield. Compared to traditional instrument panel displays, they allow the human eye to focus less on the road, significantly improving driving safety. However, in existing technologies, the secondary image of black-bordered displays is brighter, creating visible ghosting and affecting the user's visual perception. Summary of the Invention

[0004] The present application provides a black-border display glass, a black-border display system and a vehicle, which can increase the brightness ratio of the main image and the secondary image of the display image in the display area, reduce or even avoid ghosting of the display image, and improve driving safety and visual comfort.

[0005] In a first aspect, the present application provides a black-bordered display glass. The black-bordered display glass comprises a light-transmitting area and a shielding area, wherein the light-transmitting area has a visible light transmittance greater than or equal to 70%, the shielding area has a visible light transmittance less than or equal to 5%, and at least one display area is provided within the shielding area.

[0006] The black-edge display glass comprises an outer glass plate, an inner glass plate, an adhesive layer, a shielding layer and an infrared reflection layer;

[0007] The adhesive layer is bonded between the inner glass plate and the outer glass plate;

[0008] The shielding layer and the infrared reflecting layer are provided between the outer glass plate and the inner glass plate;

[0009] In the display area, the shielding layer and the infrared reflecting layer at least partially overlap, and the infrared reflecting layer covers the surface of the shielding layer closer to the inner glass plate.

[0010] In one possible embodiment, the shielding layer includes a first surface and a second surface, the first surface and the second surface being disposed opposite each other along the thickness direction of the shielding layer. The first surface faces the outer glass plate, the second surface faces the infrared reflective layer, and the surface roughness of the second surface is 0.5 to 1.0.

[0011] In one possible embodiment, the infrared reflective layer includes a first portion and a second portion, the first portion being connected to the second portion, the first portion being disposed between the shielding layer and the adhesive layer and covering the display area, and the second portion being disposed between the outer glass plate and the adhesive layer and covering the light-transmitting area.

[0012] In one possible embodiment, the adhesive layer includes a first adhesive portion and a second adhesive portion, the first adhesive portion and the second adhesive portion being connected, and the visible light transmittance of the first adhesive portion is lower than the visible light transmittance of the second adhesive portion. The first adhesive portion covers the display area, and the second adhesive portion covers the light-transmitting area.

[0013] In a possible implementation manner, a visible light transmittance of the first adhesive portion is greater than 2.5% and less than 88%.

[0014] In a possible implementation manner, the first bonding part is a colored thermoplastic material.

[0015] In a possible implementation, the light-transmitting area includes a head-up display area; when the black-bordered display glass is installed on a vehicle, the adhesive layer has a wedge-shaped structure along the height direction of the black-bordered display glass.

[0016] In a possible embodiment, the black-bordered display glass further includes an additional shielding layer, which is disposed on the surface of the inner glass plate facing away from the adhesive layer. The additional shielding layer is located within the shielding area and on the side of the display area facing away from the light-transmitting area.

[0017] In one possible embodiment, the shielding layer is arranged between the outer glass plate and the adhesive layer, and the shielding layer at least covers the display area; the infrared reflecting layer is arranged between the shielding layer and the adhesive layer, and the infrared reflecting layer at least covers the display area.

[0018] In a possible implementation, the infrared reflection layer includes at least one metal functional layer.

[0019] In a second aspect, the present application provides a black-border display system. The black-border display system includes a projection device and the black-border display glass. The projection device is disposed on the side of the inner glass plate facing away from the adhesive layer. The projection device is configured to emit projection light.

[0020] In a possible implementation manner, the included angle between the projection light and the surface of the inner glass plate facing away from the adhesive layer is 50° to 80°, or 60° to 75°.

[0021] In one possible embodiment, when the included angle between the projection light and the surface of the inner glass plate facing away from the adhesive layer is 60°, the brightness ratio of the primary image to the secondary image in the display area is ≥110, or the brightness ratio of the primary image to the secondary image in the display area is ≥200;

[0022] Alternatively, when the included angle between the projection light and the surface of the inner glass plate facing away from the adhesive layer is 65°, the brightness ratio of the primary image to the secondary image in the display area is ≥160, or the brightness ratio of the primary image to the secondary image in the display area is ≥220;

[0023] Alternatively, when the included angle between the projection light and the surface of the inner glass plate facing away from the adhesive layer is 65°, the brightness ratio of the primary image to the secondary image in the display area is ≥230, or the brightness ratio of the primary image to the secondary image in the display area is ≥290;

[0024] Alternatively, when the included angle between the projection light and the surface of the inner glass plate facing away from the adhesive layer is 65°, the brightness ratio of the primary image to the secondary image in the display area is ≥430, or the brightness ratio of the primary image to the secondary image in the display area is ≥600.

[0025] In a third aspect, the present application provides a vehicle, comprising a vehicle body and the black-bordered display system, wherein the black-bordered display glass is installed at an opening of the vehicle body, and the projection device is installed inside the vehicle body.

[0026] In summary, the black-bordered display glass provided by the present application can reduce the brightness of the secondary image in the display image formed in the display area by forming an infrared reflective layer on the surface of the shielding layer, thereby increasing the brightness ratio of the primary image to the secondary image of the display image, and further reducing or even eliminating ghosting of the display image, thereby improving the clarity of the display image. Furthermore, in the present application, by forming an infrared reflective layer on the surface of the shielding layer to increase the brightness ratio of the primary image to the secondary image of the display image, the imaging resistance of the black-bordered display system can be improved, reducing the user's visual fatigue and the risk of the user misreading the displayed information of the displayed image, thereby improving driving safety. At the same time, it can also slow the aging rate of the projection equipment in the black and white display system, extending the service life of the projection equipment and the black-bordered display system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of the vehicle provided for this application;

[0028] Figure 2 A partial structural diagram of the black-border display system provided in the first embodiment of the present application;

[0029] Figure 3 yes Figure 2 A schematic diagram of the structure of the black-border display glass in the black-border display system shown at another angle;

[0030] Figure 4 yes Figure 3 The black edge shown is a schematic diagram of a partial cross-sectional structure of the display glass;

[0031] Figure 5 yes Figure 4 The black border shown shows a schematic diagram of the exploded structure of the glass;

[0032] Figure 6 is a schematic diagram of a partial cross-sectional structure of a black-bordered display glass provided in a comparative embodiment;

[0033] Figure 7 This is a partial structural diagram of the black-bordered display glass provided in the second embodiment of the present application;

[0034] Figure 8 This is a partial structural diagram of a black-border display system provided in the third embodiment of the present application;

[0035] Figure 9 2 is a schematic structural diagram of the black-bordered display glass provided in the fourth embodiment of the present application;

[0036] Figure 10 yes Figure 9 The black edge shown is a schematic diagram of the cross-sectional structure of the display glass;

[0037] Figure 11 This is a schematic structural diagram of the black-bordered display glass provided in the fifth embodiment of the present application.

[0038] Figure numerals: vehicle 500; vehicle body 210; black-border display system 200; projection device 110; black-border display glass 100; light-transmitting area 101; head-up display area 1011; field of view transparent area 1012; shielding area 102; display area 1021; non-display area 1022; outer glass plate 10; first surface 11; second surface 12; inner glass plate 20; third surface 21; fourth surface 22; adhesive layer 30; first adhesive surface 31; second adhesive surface 32; first adhesive portion 33; second adhesive portion 34; shielding layer 40; first surface 41; second surface 42; infrared reflecting layer 50; first portion 51; second portion 52; additional shielding layer 60; projection light A; first reflected light B; second reflected light C; black-border display glass 100a; inner glass plate 20a; outer glass plate 10a; adhesive layer 30a; shielding layer 40a. DETAILED DESCRIPTION

[0039] The technical solutions in this application will be described clearly and completely below in conjunction with the drawings in this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0040] In this application, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood based on the specific circumstances. In this application, "plurality" refers to two or more.

[0041] This application provides a means of transportation. Transportation means include but are not limited to vehicles, airplanes, trains, subways, light rail, etc. The following description uses the vehicle as the transportation means.

[0042] See also Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the vehicle 500 provided in this application. Figure 2 It is a partial structural diagram of the black border display system 200 provided in this application.

[0043] An embodiment of the present application provides a vehicle 500. In this embodiment, the vehicle 500 is a sedan. In other embodiments, the vehicle 500 may also be a multi-purpose vehicle (MPV), a sport utility vehicle (SUV), an off-road vehicle (ORV), a pickup truck, a van, a bus, a truck, etc.

[0044] Vehicle 500 includes a vehicle body 210 and a black-bordered display system 200. Black-bordered display system 200 includes black-bordered display glass 100 and a projection device 110. Black-bordered display glass 100 is installed at an opening in vehicle body 210 and divides vehicle 500 into an exterior and an interior of vehicle 500. Projection device 110 is installed inside vehicle 500 and is configured to emit projection light A. Projection light A is incident on black-bordered display glass 100, which reflects the projection light A into the eyes of the driver and passenger, forming a display image. This allows the driver and passenger to observe the display image without having to lower their heads significantly. This allows the driver and passenger to maintain their sight less away from the road, keeping more attention on the road or nearby, facilitating observation of real-time conditions outside vehicle 500 and more easily obtaining necessary information for assisting driving, such as driving information and entertainment information, thereby significantly improving driving safety. The image displayed by the black-bordered display glass 100 provided in this embodiment can partially replace or even completely replace a traditional instrument panel, or even eliminate the traditional instrument panel.

[0045] The projection light A may be pure S-polarized light or mixed light with a certain proportion of S-polarized light.

[0046] The black-bordered display glass 100 may be used as the front windshield, rear windshield, side window glass, or corner window glass of the vehicle 500. The following description will be made by taking the black-bordered display glass 100 as the front windshield as an example.

[0047] See also Figure 3 , Figure 3 yes Figure 2 The black-border display glass 100 in the black-border display system 200 is shown as a schematic structural diagram at another angle.

[0048] For ease of description, in this application, the width direction of the black-bordered display glass 100 is defined as the X direction, the height direction is defined as the Y direction, and the thickness direction is defined as the Z direction. The X direction, Y direction, and Z direction are mutually perpendicular. It is understood that the X direction is parallel or approximately parallel to the width direction of the vehicle 500, the positive direction of the Y axis is toward the roof, and the negative direction of the Y axis is toward the bottom of the vehicle.

[0049] It should be noted that the directional terms such as "top", "bottom", "left" and "right" mentioned in the description of this application are based on the Figure 3 The black border is shown in the figure to describe the orientation of the display glass 100. The orientation toward the positive direction of the Y axis is "top", the orientation toward the negative direction of the Y axis is "bottom", the orientation toward the negative direction of the X axis is "left", and the orientation toward the positive direction of the X axis is "right".

[0050] The black-bordered display glass 100 has a light-transmitting area 101 and a shielding area 102. The shielding area 102 is arranged around the periphery of the light-transmitting area 101. The visible light transmittance of the light-transmitting area 101 is greater than or equal to 70%, so that people in the car can observe the environment outside the car through the light-transmitting area 101. The visible light transmittance of the shielding area 102 is less than or equal to 5%, which is conducive to shielding, protecting and improving the overall aesthetics. Preferably, the visible light transmittance of the shielding area 102 is less than or equal to 3%, more preferably less than or equal to 1%, further less than or equal to 0.5%, or even almost equal to 0, that is, it is not light-transmitting.

[0051] The shielding area 102 includes a display area 1021 and a non-display area 1022. There can be one or more display areas 1021. When there is only one display area 1021, it can cover only a portion of the shielding area 102 at the bottom, or it can cover the entire bottom shielding area 102, creating a panoramic display effect from A-pillar to A-pillar. When there are multiple display areas 1021, the multiple display areas 1021 are spaced apart along the X-direction in the shielding area 102 at the bottom of the black-bordered display glass 100.

[0052] Projection light A emitted by the projection device 110 is transmitted to the display area 1021, thereby forming a display image in the display area 1021. The display image can include driving information, graphics, text, or video of the vehicle 500. The displayed information can be used in various scenarios, such as welcoming guests, creating an atmosphere, watching movies, and working. Specifically, the display image is used to display driving parameters, including vehicle speed, engine speed, fuel consumption, tire pressure, warning information, mileage, etc. It can also be used to display weather temperature, entertainment information, dynamic navigation, night vision, real-life maps, etc.

[0053] See also Figure 4 and Figure 5 , Figure 4 yes Figure 3 The schematic diagram of the partial cross-section structure of the black-bordered display glass 100 is shown. Figure 5 yes Figure 4 The exploded structure diagram of the black-bordered display glass 100 is shown.

[0054] The black-bordered display glass 100 is laminated glass. It includes an outer glass panel 10, an inner glass panel 20, an adhesive layer 30, a shielding layer 40, and an infrared reflective layer 50. Along the thickness direction of the black-bordered display glass 100, and from the exterior to the interior of the vehicle 500, i.e., along the positive Z-axis, the outer glass panel 10, the shielding layer 40, the infrared reflective layer 50, and the inner glass panel 20 are stacked. When the black-bordered display glass 100 is installed on the vehicle body 210, the outer glass panel 10 faces the exterior of the vehicle 500, while the inner glass panel 20 faces the interior of the vehicle 500.

[0055] The outer glass plate 10 includes a first surface 11 and a second surface 12. The first surface 11 and the second surface 12 are disposed opposite each other along the thickness direction (Z direction) of the outer glass plate 10. When the black-bordered display glass 100 is mounted on the vehicle body 210, the first surface 11 of the outer glass plate 10 faces the exterior of the vehicle 500, and the second surface 12 faces the inner glass plate 20.

[0056] The thickness of the outer glass plate 10 is 2.0 mm to 2.5 mm. The outer glass plate 10 can be white glass or tinted glass, such as green glass. The total iron content (calculated as 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%. The visible light transmittance of the transparent glass is 80% to 95%. The total iron content (calculated as Fe2O3) of the tinted glass is 0.1% to 0.8%, preferably 0.1% to 0.5%. The visible light transmittance of the tinted glass is 80% to 90%. In some embodiments, the outer glass plate 10 is tinted glass, which is beneficial to improving the heat insulation effect of the black-bordered display glass 100.

[0057] The inner glass panel 20 includes a third surface 21 and a fourth surface 22. The third surface 21 and the fourth surface 22 are disposed opposite each other along the thickness direction of the inner glass panel 20. The thickness of the inner glass panel 20 is 2.0 mm to 2.5 mm. The inner glass panel 20 can be white glass or tinted glass, such as green glass. In some embodiments, the inner glass panel 20 is tinted glass to reduce the incidence of projection light A on the shielding layer 40, thereby reducing the brightness of the secondary image. When the black-bordered display glass 100 is installed on the vehicle body 210, the fourth surface 22 faces the interior of the vehicle 500.

[0058] The adhesive layer 30 includes a first adhesive surface 31 and a second adhesive surface 32. The first adhesive surface 31 and the second adhesive surface 32 are arranged opposite each other along the thickness direction of the adhesive layer 30. The thickness of the adhesive layer 30 is 0.38 mm, or the thickness of the adhesive layer 30 can also be 0.76 mm. The material of the adhesive layer 30 is one or more of polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), ionomer film (SuperSafeGlas SGP), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), etc. Exemplarily, the material of the adhesive layer 30 is PVB.

[0059] The adhesive layer 30 is disposed between the inner glass plate 20 and the outer glass plate 10 and is bonded to and fixed to the inner and outer glass plates 20 and 10 to enhance the structural stability of the black-bordered display glass 100. Specifically, the first adhesive surface 31 faces the second surface 12 of the outer glass plate 10 and is bonded to the second surface 12. The second adhesive surface 32 faces the third surface 21 of the inner glass plate 20 and is bonded to the third surface 21.

[0060] In which, the shielding layer 40 and the infrared reflecting layer 50 are arranged between the outer glass plate and the inner glass plate; in the display area 1021, the shielding layer 40 and the infrared reflecting layer 50 at least partially overlap and the infrared reflecting layer 50 covers the surface of the shielding layer 40 closer to the inner glass plate 20.

[0061] Please continue reading Figure 4 and Figure 5 The shielding layer 40 includes a first surface 41 and a second surface 42. The first surface 41 and the second surface 42 are disposed opposite each other along the thickness direction of the shielding layer 40. The shielding layer 40 is located between the outer glass plate 10 and the adhesive layer 30. The first surface 41 faces the second surface 12 and is fixedly connected to the second surface 12, while the second surface 42 faces the first adhesive surface 31.

[0062] The shielding layer 40 covers the shielding area 102. Specifically, the shielding layer 40 is located at least in the area near the bottom of the second surface 12. The shielding layer 40 can serve as a display background for the displayed image, better blocking external ambient light and preventing unnecessary interference with the line of sight. It can also increase the contrast between the displayed image and the display background, making the image display clearer. The visible light transmittance of the shielding layer 40 is less than or equal to 5%, for example, 5%, 4%, 3%, 2%, 1%, 0.5% or 0%, so that the shielding layer 40 has a good shielding effect.

[0063] In this embodiment, the shielding layer 40 is black ink. The shielding layer 40 is formed on the second surface 12 by printing to enhance the bonding strength between the shielding layer 40 and the outer glass plate 10. In other embodiments, the shielding layer 40 may also be an opaque polymer film or a dimming film. In this case, the shielding layer 40 may be adhered to the second surface 12. The opaque polymer film may be a polymer film with a color base, a polymer film with ink, paint, or pigment printed on the surface, or a dyed or colored polymer film. The dimming film may be a polymer dispersed liquid crystal film (PDLC), a suspended particle film (SPD), an electrochromic film (EC), a dye liquid crystal film (LC), or the like. The minimum visible light transmittance of the dimming film is less than or equal to 5%, for example, 5%, 4%, 3%, 2%, 1%, 0.5%, or 0%. Furthermore, the maximum visible light transmittance of the dimming film can be set as needed, for example, 10%, 20%, 30%, 50%, 70%, 80%, or the like. For example, when black-border display is required, the dimming film is in an opaque state, with a visible light transmittance of less than or equal to 5%, or even 0%, to improve the contrast between the displayed image and the display background. When the display area 1021 is not displaying, the dimming film is in a transparent state, with a visible light transmittance of greater than or equal to 70%, thereby providing a larger transparent area on the black-border display glass 100.

[0064] The surface roughness of the second surface 42 of the shielding layer 40 is 0.5-1.0, that is, the surface roughness of the surface of the shielding layer 40 facing away from the outer glass plate 10 is 0.5-1.0.

[0065] The infrared reflective layer 50 is disposed between the shielding layer 40 and the adhesive layer 30 and is fixedly connected to both layers. Specifically, the infrared reflective layer 50 can be formed on the surface of the shielding layer 40 by chemical deposition, physical vapor deposition, or sintering. In the actual manufacturing process, ink can be first printed on the second surface 12 of the outer glass sheet 10 to form the shielding layer 40. The outer glass sheet with the shielding layer 40 is then sintered. Finally, the infrared reflective layer 50 is formed on the second surface 42 of the shielding layer 40.

[0066] The infrared reflective layer 50 covers at least the portion of the shielding layer 40 located in the display area 1021. In this embodiment, the infrared reflective layer 50 completely covers the shielding layer 40. Furthermore, along the thickness direction of the black-bordered display glass 100, the projection of the infrared reflective layer 50 overlaps with the projection of the shielding layer 40. In other embodiments, along the thickness direction of the black-bordered display glass 100, the projection of the infrared reflective layer 50 may extend beyond the projection of the shielding layer 40. Alternatively, the infrared reflective layer 50 may only cover the portion of the shielding layer 40 located in the display area 1021.

[0067] The infrared reflective layer 50 may include at least one metal functional layer, wherein the material of the metal functional layer is selected from a metal or alloy of at least one element selected from Ag, Au, Cu, Al, and Pt. The material of the metal functional layer is preferably silver or a silver alloy, and examples of the silver alloy include silver-gold alloy, silver-aluminum alloy, silver-copper alloy, and silver-platinum-gold alloy. It is understood that the infrared reflective layer 50 may also include multiple dielectric layers, each metal functional layer being located between two adjacent dielectric layers. The dielectric layers are used to ensure that the optical, mechanical, and color properties of the infrared reflective layer 50 meet the comprehensive requirements of vehicle window glass. The dielectric layers are 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, such as ZnSnOx, TiOx, SiNx, SiOx, and NbOx.

[0068] The infrared reflective layer 50 can effectively reflect infrared rays in sunlight, thereby blocking heat transfer and reducing the total solar energy transmittance of the laminated glass 1. The physical thickness of the infrared reflective layer 50 ranges from 70 nm to 500 nm. Specifically, the physical thickness of the infrared reflective layer 50 can be, but is not limited to, 70 nm, 80 nm, 140 nm, 160 nm, 220 nm, 280 nm, 330 nm, 380 nm, 440 nm, 480 nm, and 500 nm.

[0069] When the infrared reflective layer 50 has two metal functional layers and three second dielectric layers, it can be called a double-silver infrared reflective layer. Similarly, when the infrared reflective layer 50 has three metal functional layers and four second dielectric layers, it can be called a triple-silver infrared reflective layer. Similarly, there can be quad-silver infrared reflective layers and penta-silver infrared reflective layers.

[0070] Optionally, the total physical thickness of the metal functional layer can be 10nm to 50nm, and specific examples include 10nm, 15nm, 20nm, 30nm, 40nm, 50nm, etc. The total physical thickness of the metal functional layer is equal to the sum of the physical thicknesses of all the metal functional layers in the infrared reflective layer 50. When the total physical thickness of the metal functional layer is 10nm to 50nm, it can not only make the infrared reflective layer 50 have a better effect of reflecting infrared rays, but also help to reduce the design difficulty of the infrared reflective layer 50 and ensure that the infrared reflective layer 50 can withstand high-temperature heat treatment and bending processes, and meet the automotive-grade use requirements of vehicle window glass. Specifically, the physical thickness of each metal functional layer is 4nm to 16nm, and specific examples include 4nm, 5nm, 6nm, 8nm, 10nm, 12nm, 14nm, 16nm, etc.

[0071] In this embodiment, by setting the roughness of the second surface 42 of the shielding layer 40 to 0.5-1.0 and forming the infrared reflective layer 50 on the second surface 42 of the shielding layer 40, the bonding strength between the infrared reflective layer 50 and the shielding layer 40 can be improved, thereby improving the structural stability of the black-bordered display glass 100.

[0072] It should be noted that the thickness of the ink layer and infrared reflective layer 50 is very small, even negligible, compared to the thickness of the outer glass plate 10 and the adhesive layer 30. The surface of the outer glass plate 10 with the ink layer and infrared reflective layer 50 facing the adhesive layer 30 is approximately flat. When manufacturing the black-bordered display glass 100, the adhesive layer 30 can be bonded to the surface of the outer glass plate 10 with the ink layer and infrared reflective layer 50. Then, the inner glass plate 20 can be bonded to the second adhesive surface 32 of the adhesive layer 30. Finally, the adhesive layer 30 is bonded and secured to the outer glass plate 10, the infrared reflective layer 50, and the inner glass plate 20 through lamination.

[0073] like Figure 4 As shown, the first bonding surface 31 of the bonding layer 30 faces the outer glass plate 10 , a portion of the first bonding surface 31 is bonded to the infrared reflective layer 50 , and a portion of the first bonding surface 31 is bonded to the second surface 12 of the outer glass plate 10 .

[0074] Please combine Figure 2 Projection light A emitted by the projection device 110 illuminates the fourth surface 22 from the interior of the vehicle 500. A portion of the projection light A reflects from the fourth surface 22, forming first reflected light B that enters the human eye, thereby forming a primary image of the display image in the display area 1021. A portion of the projection light A enters the interior of the black-bordered display glass 100, illuminates the surface of the shielding layer 40, and reflects from the shielding layer 40, forming second reflected light C. The second reflected light C sequentially passes through the infrared reflective layer 50, the adhesive layer 30, and the inner glass plate 20, exits to the outside of the black-bordered display glass 100, and enters the human eye, thereby forming a secondary image of the display image in the display area 1021.

[0075] It should be noted that the higher the secondary image brightness, the smaller the primary-to-secondary image brightness ratio, and the more obvious the ghosting of the displayed image. The lower the secondary image brightness, the larger the primary-to-secondary image brightness ratio, and the less obvious the ghosting of the displayed image. The primary-to-secondary image brightness ratio refers to the ratio of the brightness of the primary image to the brightness of the secondary image.

[0076] In this embodiment, by forming an infrared reflective layer 50 on the surface of the shielding layer 40, the brightness of the second reflected light C can be reduced, that is, the brightness of the secondary image can be reduced, thereby increasing the primary-to-secondary image brightness ratio, thereby reducing or even eliminating ghosting in the displayed image, and improving the clarity of the displayed image. Furthermore, in this embodiment, by forming the infrared reflective layer 50 on the surface of the shielding layer 40 to increase the primary-to-secondary image brightness ratio, the displayed image remains clearly visible even in complex lighting environments, thereby improving the black-border display system 200's ability to resist environmental interference.

[0077] When the secondary image is bright and the ghosting of the displayed image is obvious, it can trigger unconscious adjustments in the human eye, such as pupil constriction or lens focusing, which can increase visual fatigue. The black-bordered display glass 100 provided in this embodiment forms an infrared reflective layer 50 on the surface of the shielding layer 40 to increase the brightness ratio of the primary to secondary image and reduce the brightness of the secondary image. This can reduce visual fatigue and the risk of users misinterpreting the displayed image information, thereby improving driving safety.

[0078] At the same time, when the secondary image brightness is high and ghosting of the displayed image is obvious, the brightness of the projection light A needs to be increased to ensure that the clarity of the displayed image meets the user's viewing requirements. This wastes power and shortens the service life of the projection device 110. In this embodiment, by forming an infrared reflective layer 50 on the surface of the shielding layer 40 to increase the primary-to-secondary image brightness ratio, the displayed image can have sufficient clarity at a lower brightness of the projection light A, thereby slowing the aging of the projection device 110 and extending the service life of the projection device 110 and the black-border display system 200.

[0079] In some embodiments, when the included angle between the projection light A and the surface of the inner glass plate 20 facing away from the adhesive layer 30 is 60°, the primary-to-secondary image brightness ratio of the display area 1021 is ≥110, or the primary-to-secondary image brightness ratio of the display area 1021 is ≥200.

[0080] Alternatively, when the included angle between the projection light A and the surface of the inner glass plate 20 facing away from the adhesive layer 30 is 65°, the primary-to-secondary image brightness ratio of the display area 1021 is ≥160, or the primary-to-secondary image brightness ratio of the display area 1021 is ≥220;

[0081] Alternatively, when the included angle between the projection light A and the surface of the inner glass plate 20 facing away from the adhesive layer 30 is 65°, the primary-to-secondary image brightness ratio of the display area 1021 is ≥ 230, or the primary-to-secondary image brightness ratio of the display area 1021 is ≥ 290;

[0082] Alternatively, when the included angle between the projection light A and the surface of the inner glass plate 20 facing away from the adhesive layer 30 is 65°, the primary-to-secondary image brightness ratio of the display area 1021 is ≥430, or the primary-to-secondary image brightness ratio of the display area 1021 is ≥600.

[0083] In some embodiments, the incident angle of the projection light A emitted by the projection device 110 on the inner surface of the black-bordered display glass 100 may be 50° to 80°. In this embodiment, the incident angle of the projection light A emitted by the projection device 110 on the inner surface of the black-bordered display glass 100 is 60° to 75°. That is, the angle between the projection light A and the fourth surface 22 is 60° to 75°. Furthermore, as the incident angle of the projection light A increases, the brightness ratio of the primary image to the secondary image of the display image formed by the black-bordered display glass 100 gradually increases, and the displayed image becomes clearer and clearer. For example, in one embodiment, when the incident angle is 60°, the brightness ratio of the primary image to the secondary image of the display image formed by the black-bordered display glass 100 is 220; when the incident angle is 65°, the brightness ratio of the primary image to the secondary image of the display image formed by the black-bordered display glass 100 is 230; when the incident angle is 70°, the brightness ratio of the primary image to the secondary image of the display image formed by the black-bordered display glass 100 is 290; when the incident angle is 75°, the brightness ratio of the primary image to the secondary image of the display image formed by the black-bordered display glass 100 is 660.

[0084] In this embodiment, the incident angle of projection light A is not specifically limited; as long as the incident angle of projection light A on the surface of the black-bordered display glass 100 is between 60° and 75°, it will suffice. In actual design, the incident angle can be adjusted to adjust the primary-to-secondary image brightness ratio, thereby adjusting the clarity of the displayed image.

[0085] For further explanation, this application provides Figure 6 The difference between the comparative embodiment and the present embodiment is that in the comparative embodiment, the black edge display glass 100a is not provided. Figure 4 The infrared reflective layer 50 in the black-bordered display glass 100a is shown. Specifically, the black-bordered display glass 100a includes an inner glass plate 20a, an outer glass plate 10a, an adhesive layer 30a, and a shielding layer 40a. The outer glass plate 10a, the adhesive layer 30a, and the inner glass plate 20a are stacked sequentially along the thickness direction of the black-bordered display glass 100a, with the adhesive layer 30a bonded to both the outer glass plate 10a and the inner glass plate 20a. The shielding layer 40a is provided on the surface of the outer glass plate 10a facing the adhesive layer 30a.

[0086] Please refer to Table 1, Table 1 is Figure 4 The black edge display glass 100 provided in the embodiment shown is Figure 6 The brightness comparison table of the black-bordered display glass 100a provided by the comparative embodiment is shown at different incident angles.

[0087]

[0088] Among them, the light source for the brightness test is a D65 light source. The D65 light source is an international standard artificial daylight light source with a color temperature of approximately 6500K and a color rendering index (Ra) generally required to be greater than 90. The D65 light source has high color rendering and temperature stability. In this embodiment, the use of the D65 light source as the light source for the brightness test can improve the accuracy of the brightness obtained by the test. The incident angle refers to the angle between the incident light and the fourth surface, that is, the angle between the light emitted by the light source and the inner surface of the black-bordered display glass 100.

[0089] The brightness corresponding to the sample "Present Example-1" means that in the first test, Figure 4 The brightness of the display image formed by the black-bordered display glass 100 provided in the embodiment shown. The brightness corresponding to the sample "Present Embodiment-2" refers to that in the second test, Figure 4 The brightness of the display image formed by the black-bordered display glass 100 provided in the embodiment shown. For example, in the first brightness test, Figure 4 The brightness of the secondary image of the display image formed by the black-bordered display glass 100 provided in the embodiment shown is 9.9 cd / m 2 , the main image brightness is 2211cd / m 2 , the main image and secondary image brightness ratio is 224. In the second brightness test, Figure 4 The brightness of the secondary image of the display image formed by the black-bordered display glass 100 provided in the embodiment shown is 8.3 cd / m 2 , the main image brightness is 1734cd / m 2 The brightness ratio of the main image to the secondary image is 209.

[0090] The brightness corresponding to the sample "Comparative Example-1" means that in the first test, Figure 6 The brightness of the display image formed by the black-bordered display glass 100a provided in the comparative example shown. The brightness corresponding to the sample "Comparative Example-2" means that, in the second test, Figure 6 The brightness of the display image formed by the black-bordered display glass 100a provided in the comparative embodiment is shown. In this embodiment, performing two brightness tests on the same sample can improve the accuracy of the test results.

[0091] Under the same light source and incident angle, the brightness of the secondary image formed by the black-bordered display glass 100 provided in this embodiment is lower than that of the secondary image formed by the black-bordered display glass 100a provided in the comparative embodiment. Furthermore, the primary-to-secondary image brightness ratio of the displayed image formed by the black-bordered display glass 100 provided in this embodiment is higher than that of the displayed image formed by the black-bordered display glass 100a provided in the comparative embodiment. Therefore, by forming the infrared reflective layer 50 on the surface of the shielding layer 40, the brightness of the secondary image in the displayed image formed by the black-bordered display glass 100 can be reduced, thereby increasing the primary-to-secondary image brightness ratio, thereby reducing or even eliminating ghosting in the displayed image and improving the clarity of the displayed image.

[0092] As shown in Table 1, when the incident angle is 60°, Figure 4 The black-bordered display glass 100 provided in the embodiment shown has a primary-secondary image brightness ratio of 224 and 209; when the incident angle is 65°, Figure 4 The black-bordered display glass 100 provided in the embodiment shown has a primary-secondary image brightness ratio of 229 and 223; when the incident angle is 70°, Figure 4 The black-bordered display glass 100 provided in the embodiment shown has a primary-secondary image brightness ratio of 296 and 295; when the incident angle is 75°, Figure 4 The black-bordered display glass 100 provided in the illustrated embodiment has a primary-to-secondary image brightness ratio of 663 and 610. Therefore, when the incident angle is within the range of 60° to 75°, the primary-to-secondary image brightness ratio of the display image formed by the black-bordered display glass 100 gradually increases as the incident angle increases.

[0093] See also Figure 7 , Figure 7 1 is a partial structural diagram of the black-bordered display glass 100 provided in the second embodiment of the present application.

[0094] This embodiment and Figure 4 The difference between the illustrated embodiment and the illustrated embodiment is that, in this embodiment, the infrared reflective layer 50's orthographic projection along the Z direction completely covers the second surface 12, that is, completely covers the outer glass pane 10. In other words, the infrared reflective layer 50 covers both the light-transmitting area 101 and the shielding area 102. In this case, the adhesive layer 30 is completely located between the infrared reflective layer 50 and the inner glass pane 20. The first adhesive surface 31 is bonded to the surface of the infrared reflective layer 50 facing away from the outer glass pane 10, and the second adhesive surface 32 is bonded to the third surface 21 of the inner glass pane 20.

[0095] The infrared reflective layer 50 includes a first portion 51 and a second portion 52. In this embodiment, the first portion 51 is annular, and the second portion 52 is connected to the inner ring of the first portion 51. The first portion 51 is formed on the second surface 42 of the shielding layer 40 and covers the shielding layer 40. In other words, the first portion 51 covers the shielding area 102. The second portion 52 is formed on the second surface 12 of the outer glass plate 10 and covers the light-transmitting area 101.

[0096] In the actual manufacturing process, ink can be first printed on the second surface 12 of the outer glass plate 10 to form the shielding layer 40. Then, the outer glass plate 10 with the shielding layer 40 is sintered. Next, a layer of metallic silver is formed on the side of the outer glass plate 10 with the shielding layer 40 facing away from the first surface 11 to form the infrared reflective layer 50. Specifically, the infrared reflective layer 50 can be formed by electroplating, chemical deposition, physical vapor deposition, or sintering.

[0097] In this embodiment, by covering the light-transmitting area 101 and the shielding area 102 of the black-bordered display glass 100 with the infrared reflective layer 50, the brightness ratio of the primary image to the secondary image of the display image formed by the black-bordered display glass 100 can be increased while improving the heat insulation performance and ultraviolet shielding performance of the black-bordered display glass 100.

[0098] In one embodiment, the black-bordered display glass 100 further includes a busbar and a power supply (not shown). The busbar is connected to the infrared reflective layer 50 and is electrically connected to the power supply. Current from the power supply is input to the infrared reflective layer 50 through the busbar, causing the infrared reflective layer 50 to generate heat, thereby heating the black-bordered display glass 100 to achieve defog and defrost functions, thereby preventing fog from interfering with the displayed image and the driver's field of view, further improving driving safety.

[0099] See also Figure 8 , Figure 8 This is a partial structural diagram of the black border display system 200 provided in the third embodiment of the present application. Figure 8 The structure of the projection device 110 is shown.

[0100] This embodiment and Figure 7The difference between the illustrated embodiment is that, in this embodiment, the adhesive layer 30 includes a first adhesive portion 33 and a second adhesive portion 34. The first adhesive portion 33 covers at least the display area 1021, and the second adhesive portion 34 covers at least the light-transmitting area 101. In this embodiment, the first adhesive portion 33 covers the display area 1021. That is, the orthographic projection of the first adhesive portion 33 along the Z direction covers the shielding layer 40 located in the display area 1021. The second adhesive portion 34 is connected to the first adhesive portion 33, and the second adhesive portion 34 covers the non-display area 1022 and the light-transmitting area 101. In other embodiments, the first adhesive portion 33 may also cover the entire shielding area 102, and the second adhesive portion 34 covers the light-transmitting area 101.

[0101] The visible light transmittance of the first adhesive portion 33 is greater than that of the second adhesive portion 34. The first adhesive portion 33 is a colored thermoplastic material, such as one or more of polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), ionomer film (SuperSafeGlas SGP), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), etc. Exemplarily, the material of the adhesive layer 30 is PVB. In this embodiment, the first adhesive portion 33 is colored PVB (polyvinyl butyral). In this embodiment, the visible light transmittance of the first adhesive portion 33 is greater than 2.5% and less than 88%. The second adhesive portion 34 is transparent PVB, and the visible light transmittance of the second adhesive portion 34 is greater than or equal to 70%.

[0102] like Figure 8 As shown, projection light A emitted by projection device 110 illuminates the fourth surface 22 from the interior of vehicle 500. Part of projection light A reflects from fourth surface 22, forming first reflected light B that enters the human eye, thereby forming a primary image of the display image in display area 1021. Part of projection light A enters the interior of black-bordered display glass 100, passes through inner glass plate 20, first adhesive portion 33, and infrared reflective layer 50 in sequence, illuminates the surface of shielding layer 40, and reflects from the shielding layer 40 in sequence, forming second reflected light C. Second reflected light C passes through infrared reflective layer 50, first adhesive portion 33, and inner glass plate 20 in sequence, exits to the outside of black-bordered display glass 100, and enters the human eye, thereby forming a secondary image of the display image in display area 1021.

[0103] It is understandable that, due to the low transmittance of the first adhesive portion 33 , when the projection light A passes through the first adhesive portion 33 , the brightness of the projection light A will decrease.

[0104] In this embodiment, by providing a first adhesive portion 33 with a lower visible light transmittance on the adhesive layer 30 and covering the shielding layer 40 located in the display area 1021 with the first adhesive portion 33, the brightness of the projection light A irradiated on the shielding layer 40 can be weakened, and the brightness of the second reflected light C can be weakened, thereby reducing the brightness of the secondary image, and increasing the brightness ratio of the primary image to the secondary image of the displayed image, thereby improving the clarity of the displayed image.

[0105] See also Figure 9 and Figure 10 , Figure 9 : is a structural diagram of the black-bordered display glass 100 provided in the fourth embodiment of the present application. Figure 10 yes Figure 9 The cross-sectional structure diagram of the black-bordered display glass 100 is shown.

[0106] This embodiment and Figure 7 The difference between the illustrated embodiments is that, in this embodiment, the light-transmitting area 101 of the black-bordered display glass 100 includes a heads-up display (HUD) area 1011 and a transparent field of view area 1012. The HUD area 1011 is used to display driving information such as speed and navigation, implementing a W-HUD or AR-HUD, allowing the driver to view this information without lowering or turning their head, thereby improving driving safety. Specifically, the HUD area 1011 is located within the light-transmitting area 101. When the black-bordered display glass 100 is installed in the vehicle 500, the adhesive layer 30 has a wedge-shaped structure along the height of the black-bordered display glass 100. In addition, in some embodiments, the adhesive layer 30 can have a positive wedge-shaped structure (thicker at the top and thinner at the bottom) or a reverse wedge-shaped structure (thinner at the top and thicker at the bottom), which can be determined based on light reflection requirements. The thickness of the adhesive layer 30 gradually decreases along the height of the black-bordered display glass 100 and toward the bottom of the black-bordered display glass 100. The thickness of the adhesive layer 30 refers to the dimension of the adhesive layer 30 along the Z direction. That is, the dimension of the adhesive layer 30 along the Z direction gradually decreases along the negative Z direction. In other words, the distance between the first adhesive surface 31 and the second adhesive surface 32 gradually decreases along the negative Z direction.

[0107] The included angle between the first adhesive surface 31 and the fourth surface 22 is greater than 0 degree and less than 90 degrees.

[0108] In this embodiment, by configuring the adhesive layer 30 to have a regular wedge-shaped structure that is thick at the top and thin at the bottom, visual reflection ghosting in the head-up display area 1011 can be reduced or even eliminated, thereby improving the clarity of the head-up display image.

[0109] See also Figure 11 , Figure 11 1 is a schematic structural diagram of the black-bordered display glass 100 provided in the fifth embodiment of the present application.

[0110] This embodiment and Figure 4 The difference from the illustrated embodiment is that, in this embodiment, the black-bordered display glass 100 further includes an additional shielding layer 60. The additional shielding layer 60 is disposed on the fourth surface 22 and within the shielding region 102. The additional shielding layer 60 is offset from the display region 1021. Specifically, the additional shielding layer 60 is located on the side of the display region 1021 facing away from the light-transmitting region 101. That is, the additional shielding layer 60 is located at the bottom region of the shielding region 102.

[0111] In this embodiment, the additional shielding layer 60 is black ink. The additional shielding layer 60 is formed on the fourth surface 22 by printing to enhance the bonding strength between the additional shielding layer 60 and the inner glass panel 20. In other embodiments, the additional shielding layer 60 may also be an opaque polymer film or a dimming film. In this case, the shielding layer 40 may be bonded to the fourth surface 22.

[0112] In this embodiment, by providing an additional shielding layer 60 at the bottom of the shielding area 102, the shielding effect on the edge area of the black-bordered display glass 100 can be further enhanced, thereby improving the consistency and aesthetics of the appearance of the black-bordered display glass 100. Furthermore, in this embodiment, by staggering the additional shielding layer 60 with respect to the display area 1021, the additional shielding layer 60 can be prevented from affecting the clarity of the displayed image.

[0113] The above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments 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, based on the idea of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A black-edged display glass, characterized in that: The black-bordered display glass includes a light-transmitting area and a shielding area, wherein the visible light transmittance of the light-transmitting area is greater than or equal to 70%, the visible light transmittance of the shielding area is less than or equal to 5%, and at least one display area is provided in the shielding area; The black-edge display glass comprises an outer glass plate, an inner glass plate, an adhesive layer, a shielding layer and an infrared reflection layer; The adhesive layer is bonded between the inner glass plate and the outer glass plate; The shielding layer and the infrared reflecting layer are provided between the outer glass plate and the inner glass plate; In the display area, the shielding layer and the infrared reflecting layer at least partially overlap, and the infrared reflecting layer covers the surface of the shielding layer closer to the inner glass plate.

2. The black-bordered display glass according to claim 1, wherein: The shielding layer includes a first surface and a second surface, the first surface and the second surface are arranged opposite to each other along the thickness direction of the shielding layer, the first surface faces the outer glass plate, the second surface faces the infrared reflection layer, and the surface roughness of the second surface is 0.5-1.

0.

3. The black-bordered display glass according to claim 2, wherein: The infrared reflective layer includes a first part and a second part, the first part is connected to the second part, the first part is arranged between the shielding layer and the adhesive layer, and the first part covers the display area; the second part is arranged between the outer glass plate and the adhesive layer, and the second part covers the light-transmitting area.

4. The black-bordered display glass according to claim 2, wherein: The adhesive layer includes a first adhesive portion and a second adhesive portion, the first adhesive portion and the second adhesive portion are connected, and the visible light transmittance of the first adhesive portion is lower than the visible light transmittance of the second adhesive portion; The first adhesive portion covers the display area, and the second adhesive portion covers the light-transmitting area.

5. The black-bordered display glass according to claim 4, characterized in that: The visible light transmittance of the first bonding portion is greater than 2.5% and less than 88%.

6. The black-bordered display glass according to claim 5, characterized in that: The first bonding portion is a colored thermoplastic material.

7. The black-bordered display glass according to any one of claims 1 to 6, characterized in that: The light-transmitting area includes a head-up display area; when the black-bordered display glass is installed on a vehicle, the adhesive layer has a wedge-shaped structure along the height direction of the black-bordered display glass.

8. The black-bordered display glass according to claim 1, wherein: The black-bordered display glass further includes an additional shielding layer, which is disposed on the surface of the inner glass plate facing away from the adhesive layer. The additional shielding layer is located within the shielding area and on the side of the display area facing away from the light-transmitting area.

9. The black-bordered display glass according to claim 1, wherein: The shielding layer is provided between the outer glass plate and the adhesive layer, and the shielding layer at least covers the display area; the infrared reflecting layer is provided between the shielding layer and the adhesive layer, and the infrared reflecting layer at least covers the display area.

10. The black-bordered display glass according to claim 1, wherein: The infrared reflecting layer includes at least one metallic functional layer.

11. A black border display system, characterized in that: The invention comprises a projection device and the black-edged display glass according to any one of claims 1 to 10, wherein the projection device is arranged on the side of the inner glass plate facing away from the adhesive layer; and the projection device is used for emitting projection light.

12. The black border display system according to claim 11, characterized in that: The included angle between the projection light and the surface of the inner glass plate facing away from the adhesive layer is 50° to 80°, or 60° to 75°.

13. The black border display system according to claim 11, wherein: When the included angle between the projection light and the surface of the inner glass plate facing away from the adhesive layer is 60°, the brightness ratio of the primary image to the secondary image in the display area is ≥110, or the brightness ratio of the primary image to the secondary image in the display area is ≥200; Alternatively, when the included angle between the projection light and the surface of the inner glass plate facing away from the adhesive layer is 65°, the brightness ratio of the primary image to the secondary image in the display area is ≥160, or the brightness ratio of the primary image to the secondary image in the display area is ≥220; Alternatively, when the included angle between the projection light and the surface of the inner glass plate facing away from the adhesive layer is 65°, the brightness ratio of the primary image to the secondary image in the display area is ≥230, or the brightness ratio of the primary image to the secondary image in the display area is ≥290; Alternatively, when the included angle between the projection light and the surface of the inner glass plate facing away from the adhesive layer is 65°, the brightness ratio of the primary image to the secondary image in the display area is ≥430, or the brightness ratio of the primary image to the secondary image in the display area is ≥600.

14. A vehicle, characterized in that: The invention comprises a vehicle body and the black-border display system according to any one of claims 11 to 13, wherein the black-border display glass is installed at an opening of the vehicle body, and the projection device is installed inside the vehicle body.

Images