Laminated glass and vehicle

Abstract

According to the laminated glass and the vehicle provided by the embodiment of the invention, the permeability of the function display area of the laminated glass can be improved, and the visibility of a driver and passengers to the outside of the vehicle is improved. The laminated glass comprises a glass substrate and a functional reflecting layer, the functional reflecting layer is arranged on the inner surface of the glass substrate, and the functional reflecting layer is used for reflecting projection light; the laminated glass comprises a visual field area, a function display area and a shielding area, the function display area comprises at least one semitransparent display area located between the visual field area and the shielding area, and the total visible light transmittance of the semitransparent display area is smaller than or equal to the total visible light transmittance of the visual field area and larger than the total visible light transmittance of the shielding area. The semitransparent display area is at least partially covered by the functional reflecting layer; the main image transmittance TL1 of the part, covered by the functional reflecting layer, of the semitransparent display area is larger than or equal to 10%; the ratio TT12 of the main image transmissivity TL1 and the auxiliary image transmissivity TL2 of the part, covered by the functional reflection layer, of the semitransparent display area is larger than or equal to 15.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and particularly to a laminated glass and a vehicle. Background Art

[0002] With the development of technologies such as vehicle intelligence, automation, and networking, vehicles can adopt forms such as a Head Up Display (HUD), an Augmented Reality Head-Up Display (ARHUD), a dashboard, a center console screen, a co-pilot display screen, etc., to display various information such as vehicle information, road information, an Advanced Driver Assistance System (ADAS), and social media information in the ink masking area on the edge of the glass, so as to provide it to the driver and passengers, and achieve the display requirements of multiple forms, near and far multi-levels, thereby bringing a more comfortable, safe, intelligent experience and rich information to the driver and passengers. This kind of head-up display glass that performs projection display in the edge masking area of the glass can also be called a black-edge display glass.

[0003] The black-edge display area of the black-edge display glass is usually located between the instrument panel surface of the vehicle and the transparent vision area of the black-edge display glass. Compared with using a traditional dashboard to display content, the driver's line of sight can leave the road surface less, thereby greatly improving driving safety. Currently, an opaque black ink ceramic layer is usually used to form the black-edge display area of the black-edge display glass to improve the clarity of the content displayed on the black-edge display glass observed by the human eye, which makes the black-edge display area unable to enter the vision area B of the transparent vision area of the black-edge display glass. And during driving, the human eye's line of sight is mainly concentrated within the driving vision range. The black-edge display area needs to be as close as possible to the driving vision range, which can improve the visibility and attention frequency of the displayed information. Therefore, the black-edge display area is usually set adjacent to the lower boundary of the vision area B to improve the visibility of the displayed information and the driver and passengers' attention frequency to the displayed information. However, the black-edge display area has an opaque vertical vision and almost no light permeability. Summary of the Invention

[0004] Embodiments of this application provide a laminated glass and a vehicle, which can improve the permeability of the functional display area of the laminated glass, enhance the visibility of the driver and passengers to the outside of the vehicle, and improve the driving experience of the driver and passengers.

[0005] In a first aspect, the present application provides a laminated glass for use in a vehicle. The laminated glass includes a glass substrate and a functional reflective layer. The glass substrate includes an outer sheet of glass, an inner sheet of glass, and an intermediate layer. Along the thickness direction of the glass substrate, the outer sheet of glass and the inner sheet of glass are spaced apart and oppositely disposed, and the intermediate layer is located between the outer sheet of glass and the inner sheet of glass; the glass substrate includes an inner surface, and the functional reflective layer is disposed on the inner surface, and the functional reflective layer is used for reflecting projection light; the laminated glass includes a vision area, a functional display area, and a shielding area. The functional display area includes at least one translucent display area located between the vision area and the shielding area. The total visible light transmittance of the translucent display area is less than or equal to the total visible light transmittance of the vision area and greater than the total visible light transmittance of the shielding area. At least a part of the translucent display area is covered by the functional reflective layer; the main image transmittance TL 1 of the part of the translucent display area covered by the functional reflective layer 1 and the secondary image transmittance TL 2 have a ratio TT 12 ≥ 15.

[0006] Among them, the main image transmittance TL 1 of the part of the translucent display area covered by the functional reflective layer 1 ≥ 20%, or TL

[0007] ≥ 30%. 1 Among them, the main image transmittance TL 2 and the secondary image transmittance TL 12 of the part of the translucent display area covered by the functional reflective layer have a ratio TT

[0008] ≥ 20. S Among them, the functional reflective layer has an S-polarized light reflectance R p for S-polarized light, and the functional reflective layer has a P-polarized light reflectance R P for P-polarized light. The P-polarized light reflectance R S is less than the S-polarized light reflectance R S , and the ratio K of the S-polarized light reflectance R P to the P-polarized light reflectance R

[0009] ≥ 1.5. S Among them, when the projection light is incident on the functional reflective layer at an incident angle of 70°, the S-polarized light reflectance R P ≥ 40%, the P-polarized light reflectance R P < 40%, or the P-polarized light reflectance RP ≤ 20%, or the P-polarized light reflectivity R P ≤ 10%.

[0010] Wherein, the refractive index n of the functional reflective layer ≥ 1.7.

[0011] Wherein, the functional reflective layer is a sol-gel coating.

[0012] Wherein, the material of the functional reflective layer includes at least one of silicon nitride, silicon-metal-hybrid nitride, aluminum nitride, gallium nitride, titanium nitride, tin oxide, manganese oxide, tungsten oxide, niobium oxide, bismuth oxide, titanium oxide, tin-zinc-hybrid oxide, zirconium oxide, scandium oxide, yttrium oxide, tantalum oxide, lanthanum oxide, cerium oxide, tellurium oxide, aluminum oxide, silicon oxide, zinc oxide, indium oxide or transition metal oxides.

[0013] Wherein, in the direction from the semi-transmissive display area to the viewing area, the main image transmittance TL of the portion of the semi-transmissive display area covered by the functional reflective layer 1 remains unchanged, or the main image transmittance TL of the portion of the semi-transmissive display area covered by the functional reflective layer 1 gradually increases.

[0014] Wherein, the functional display area further includes an opaque display area with a main image transmittance less than 10%, the opaque display area is located on the side of the semi-transmissive display area close to the shielding area, and the total visible light transmittance of the opaque display area is less than the total visible light transmittance of the semi-transmissive display area.

[0015] Wherein, at least a part of the opaque display area is covered by the functional reflective layer.

[0016] Wherein, the functional display area further includes at least one first extended display area located in the shielding area, the first extended display area is connected to the opaque display area, at least a part of the first extended display area is covered by the functional reflective layer, and the total visible light transmittance of the first extended display area is less than or equal to the total visible light transmittance of the opaque display area.

[0017] Wherein, the functional display area further includes at least one second extended display area located in the viewing area, the second extended display area is connected to the semi-transmissive display area, at least a part of the second extended display area is covered by the functional reflective layer, and the total visible light transmittance of the second extended display area is greater than or equal to the total visible light transmittance of the semi-transmissive display area.

[0018] Wherein, the ratio F of the area of the semi-transmissive display area to the area of the functional display area is 10% ≤ F ≤ 100%.

[0019] Among them, the ratio Q of the total visible light transmittance of the part of the semi-transparent display area covered by the functional reflection layer to the total visible light transmittance of the adjacent visual field area is 0.3 ≤ Q ≤ 1, or 0.5 ≤ Q ≤ 1, or 0.8 ≤ Q ≤ 1, or 0.9 ≤ Q ≤ 1.

[0020] In a second aspect, the present application also provides a vehicle, including a projection device and the laminated glass as described in any one of the above, and the projection device is configured to emit the projection light to the laminated glass.

[0021] For the laminated glass provided by the present application, by setting a semi-transparent display area in the functional display area and making the main image transmittance TL of the part of the semi-transparent display area covered by the functional reflection layer 1 ≥ 10%, so that the semi-transparent display area is in a semi-transparent state. On the one hand, the light permeability of the functional display area of the laminated glass can be improved, thereby improving the visibility of the vehicle occupants to the outside of the vehicle and enhancing the driving experience of the vehicle occupants. On the other hand, the vertical display range of the laminated glass can also be increased, thereby increasing the visible field of view and safety redundancy, improving the safety performance of the vehicle, and ensuring the driving safety of the vehicle occupants. On this basis, by making the ratio TT of the main image transmittance TL and the secondary image transmittance TL of the part of the semi-transparent display area covered by the functional reflection layer 1 and the secondary image transmittance TL 2 of 12 ≥ 15, the transmitted main image formed by natural light in the human eye can be made clearer, and at the same time, the transmitted double image formed by natural light in the human eye can be made relatively dim, so that the vehicle occupants can observe the outside information through the semi-transparent display area more clearly, which is also conducive to improving the visibility of the vehicle occupants to the outside environment information, improving the safety performance of the vehicle, and ensuring the driving safety of the vehicle occupants. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 is a schematic structural diagram of a vehicle provided by the present application;

[0024] Figure 2 is Figure 1 a schematic cross-sectional structural diagram of the black-edge display system in the first embodiment of the vehicle shown;

[0025] Figure 3 is Figure 2 a schematic structural diagram of the laminated glass in the black-edge display system shown;

[0026] Figure 4 is Figure 3Schematic cross-sectional structure diagram of the laminated glass shown after being cut along A-A;

[0027] Figure 5 is Figure 4 Schematic optical path diagram of the semi-transparent display area in the laminated glass shown;

[0028] Figure 6 Schematic diagram of the projection light forming a projected image on the laminated glass;

[0029] Figure 7 is Figure 1 Schematic cross-sectional structure diagram of the black-edge display system in the vehicle shown in the second embodiment;

[0030] Figure 8 is Figure 7 Schematic structure diagram of the laminated glass in the black-edge display system shown;

[0031] Figure 9 is Figure 8 Schematic cross-sectional structure diagram of the laminated glass shown after being cut along B-B;

[0032] Figure 10 is Figure 1 Schematic cross-sectional structure diagram of the laminated glass of the black-edge display system in the vehicle 1000 shown in the third embodiment.

[0033] Figure 11 is Figure 1 Schematic cross-sectional structure diagram of the laminated glass of the black-edge display system in the vehicle shown in the fourth embodiment;

[0034] Figure 12 is Figure 4 Simulated curve graph of the reflectivity and transmittance indexes of the laminated glass shown;

[0035] Figure 13 is the projection light incident on Figure 9 Curve graph of the S-polarized light reflectivity and P-polarized light reflectivity of the functional reflective layer in the laminated glass shown;

[0036] Figure 14 Curve graph of the relative emission spectra of the light sources of two display screens.

[0037] The names corresponding to the reference numerals in the figure are:

[0038] Vehicle 1000, vehicle body 200, black border display system 100, laminated glass 120, projection device 110, projection light 111, viewing area 121, functional display area 122, shielding area 123, semi-transparent display area 122a, external light source 2000a, natural light 2000, glass substrate 10, functional reflective layer 20, inner surface 10a, outer surface 10b, outer sheet glass 11, inner sheet glass 12, intermediate layer 13, light barrier layer 14, first surface 101, second surface 102, third surface 103, fourth surface 104, projection image 111a, opaque display area 122b, first sub-portion 141, second sub-portion 142, first part 21, second part 22, third part 23, first extended display area 122d, second extended display area 122c. Detailed implementation

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

[0040] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic structural diagram of the vehicle 1000 provided by the present application, Figure 2 is Figure 1 a schematic cross-sectional structural diagram of the black border display system 100 in the vehicle 1000 shown in the first embodiment.

[0041] The embodiments of the present application provide a vehicle 1000. The vehicle 1000 can be, but is not limited to, a sedan, a multi-purpose vehicle (MPV), a sport utility vehicle (SUV), an off-road vehicle (ORV), a pickup truck, a minivan, a bus, a truck, etc.

[0042] In this embodiment, the vehicle 1000 includes a vehicle body 200 and a black border display system 100, and the black border display system 100 is installed on the vehicle body 200. Specifically, the black border display system 100 includes a laminated glass 120 and a projection device 110. Among them, the laminated glass 120 is installed at the opening of the vehicle body 200. Exemplarily, the laminated glass 120 is the front windshield of the vehicle 1000. In some other embodiments, the laminated glass 120 can also be a rear windshield, a side window glass, or a corner window glass, etc., and the embodiments of the present application do not strictly limit this.

[0043] The projection device 110 is located on the side of the laminated glass 120 facing the interior of the vehicle 1000 and is installed inside the vehicle body 200. Among them, the projection device 110 can be a projector or a display screen. For example, the projection device 110 can be a projector, a thin film transistor display (TFT), an organic light-emitting diode display (OLED), a liquid crystal on silicon display (LCOS), a digital light processing display (DLP), a mini light-emitting diode display (Mini LED), or a micro light-emitting diode display (MicroLED), etc. The projection device 110 is used to emit projection light 111.

[0044] In this embodiment, the projection light 111 includes S-polarized light and P-polarized light. Among them, the proportion of S-polarized light in the projection light 111 is greater than or equal to 70% and less than or equal to 100%. For example, the proportion of S-polarized light in the projection light 111 is greater than or equal to 80%. In some other embodiments, the proportion of S-polarized light in the projection light 111 is greater than or equal to 90%. In another embodiment, the proportion of S-polarized light in the projection light 111 is greater than or equal to 99%. Under this setting, on the one hand, the proportion of P-polarized light in the projection light 111 can be reduced, so that the power consumption efficiency of the black edge display system 100 can be reduced. On the other hand, the reflected stray light of the projection light 111 can be reduced, avoiding interference of the reflected stray light on the display information of the black edge display system 100.

[0045] It should be understood that since the laminated glass 120 is inclined towards the driver and passenger side, the projection light 111 usually enters the laminated glass 120 at an incident angle of 65° to 75°. Among them, the incident angle θ refers to the angle between the projection light 111 and the normal. The projection light 111 enters the laminated glass 120, and the laminated glass 120 reflects the projection light 111 into the driver and passenger's eyes to form a display image, so that the driver and passenger can observe the display image without lowering their heads, making the driver and passenger's vision better and their line of sight used to observe the real-time situation outside the vehicle 1000 for a longer time. At the same time, it can obtain necessary information for assisted driving such as driving information and road information more easily, greatly improving driving safety.

[0046] In addition, the vehicle 1000 further includes an instrument panel (not shown in the figure). The instrument panel is installed on the vehicle body 200 and is located on the side of the laminated glass 120 facing the interior of the vehicle 1000. An absorbing layer (not shown in the figure) is provided on the side of the instrument panel facing the laminated glass 120. The absorbing layer may be at least one of rayon backing, nylon fluff, polyurethane film layer, polyethylene terephthalate (PET) film, acrylic film layer, polyethylene film layer, carbon nanotube film layer or matte ink layer. In this embodiment, by providing a black silk absorbing layer on the instrument panel of the vehicle 1000, the reflected stray light entering the laminated glass 120 from the outside of the vehicle 1000 can be reduced, preventing the reflected stray light from interfering with the displayed image of the laminated glass 120 and ensuring good imaging effect of the laminated glass 120.

[0047] Please refer to Figure 3 , Figure 4 and Figure 5 , Figure 3 which Figure 2 is a schematic structural diagram of the laminated glass 120 in the black-edge display system 100 shown in Figure 4 which Figure 3 is a schematic cross-sectional structural diagram of the laminated glass 120 shown in Figure 5 after being cut along the line A-A, and Figure 4 which

[0048] is a schematic optical path diagram of the semi-transparent display area 122a in the laminated glass 120 shown in

[0049] Specifically, the laminated glass 120 has a vision area 121, a functional display area 122 and a shielding area 123. The driver and passengers observe the external environment of the vehicle 1000 through the vision area 121. It should be understood that, according to the regulations GB9656 or ECE R43, the vision area 121 at least includes the vision B area. The opaque shielding objects on the laminated glass 120 shall not intrude into the vision B area to prevent interfering with the line of sight of the driver and passengers. In some other embodiments, the vision area 121 may also include the vision B deduction area. In this embodiment, the shielding area 123 is disposed around the vision area 121. The shielding area 123 can play roles such as shielding, protecting and enhancing the overall aesthetic appearance of the vehicle 1000.

[0050] The function display area 122 is located between the visual field area 121 and the shielding area 123. Among them, at least part of the function reflection layer 20 is located in the function display area 122. The projection light 111 emitted by the projection device 110 is reflected in the function display area 122 and forms projection information observable by the human eye. In this embodiment, the function display area 122 can be centrally arranged on one side of the laminated glass 120 close to the instrument panel of the vehicle 1000, such as Figure 2 shown. In some other embodiments, the function display area 122 can also be dispersedly arranged on the periphery of the laminated glass 120. For example, a part of the function display area 122 can be arranged on one side of the laminated glass 120 close to the instrument panel of the vehicle 1000, a part of the function display area 122 can also be arranged near the rearview mirror of the vehicle 1000 on the laminated glass 120, and a part of the function display area 122 can also be arranged on one side of the laminated glass 120 close to the pillar glass of the vehicle 1000.

[0051] The function display area 122 includes at least one semi-transparent display area 122a located between the visual field area 121 and the shielding area 123. The semi-transparent display area 122a is connected to the visual field area 121. Among them, at least part of the function reflection layer 20 covers the part of the inner surface 10a located in the semi-transparent display area 122a. It should be noted that the semi-transparent display area 122a refers to a perspective area with a certain visibility and recognition of the external vehicle state.

[0052] In this embodiment, the ratio F of the area of the semi-transparent display area 122a to the area of the function display area 122 is 10% ≤ F ≤ 100%. In this embodiment, the ratio F of the area of the semi-transparent display area 122a to the area of the function display area 122 is 100%. In some other embodiments, the ratio F of the area of the semi-transparent display area 122a to the area of the function display area 122 is 80%, 60%, 40%, 30%, 20% or 10%. It should be noted that in the actual production process, the proportion of the area of the semi-transparent display area 122a to the area of the function display area 122 can be designed according to the actual required visual field range and other requirements of the vehicle 1000.

[0053] In this embodiment, the minimum distance H between the boundary of the semi-transparent display area 122a close to the shielding area 123 and the boundary of the visual field area 121 close to the shielding area 123 ranges from H≥10mm, or H≥30mm, or H≥50mm, or H≥100mm. With this setting, on the one hand, it can prevent the functional display area 122 from invading the visual field area B of the visual field area 121, thereby reducing the interference of the projection information on the line of sight of the driver and passengers. On the other hand, it can also ensure that the semi-transparent display area 122a of the functional display area 122 is as close as possible to the visual field area B of the visual field area 121, which can not only enhance the visibility of the projection information on the functional display area 122, but also increase the attention frequency of the driver and passengers to the projection information on the functional display area 122. At the same time, it can also increase the visible range of the laminated glass 120, increase the visible field of view and safety redundancy, improve the safety performance of the vehicle 1000, and help ensure the driving safety of the driver and passengers.

[0054] The semi-transparent display area 122a can be used to reflect the incident projection light 111 to form a display image. The display image can display the driving information of the vehicle 1000, various patterns or play videos, etc., and 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, driving mileage, etc., and can also be used to display weather temperature, entertainment information, and can also be used as dynamic navigation, night vision, real scene map, etc. At the same time, the driver and passengers can also observe the external environment of the vehicle 1000 through the semi-transparent display area 122a.

[0055] The natural light 2000 emitted by the external light source 2000a of the vehicle 1000 passes through the semi-transparent display area 122a of the laminated glass 120 after two refractions and enters the human eye, and forms a transmitted main image in the human eye. At this time, the visible light transmittance of the transmitted main image is denoted as the main image transmittance TL 1 . Among them, the main image transmittance TL 1 is measured and calculated using a spectrophotometer with reference to the standard ISO9050. At the same time, the natural light 2000 emitted by the external light source 2000a of the vehicle 1000 will also enter the interior of the laminated glass 120, and undergo two refractions and two reflections, and then enter the human eye to form a transmitted double image. At this time, the visible light transmittance of the transmitted double image is denoted as the secondary image transmittance TL 2 . It can also be understood that the semi-transparent display area 122a has a main image transmittance TL 1 and a secondary image transmittance TL 2 for the natural light 2000 outside the vehicle 1000.

[0056] In this embodiment, the total visible light transmittance of the semi-transparent display area 122a is less than or equal to the total visible light transmittance of the viewing area 121 and greater than the total visible light transmittance of the shielding area 123. It should be noted that the value of the total visible light transmittance can be approximately equal to the main image transmittance TL 1 and the secondary image transmittance TL 2 The sum can be understood in the same way for the following similar descriptions. Among them, the main image transmittance TL of the part of the semi-transparent display area 122a covered by the functional reflection layer 20 1 ≥10%. Under this setting, the semi-transparent display area 122a can be in a semi-transparent state. On the one hand, it can improve the light permeability of the functional display area 122 of the laminated glass 120, thereby enhancing the visibility of the vehicle occupants to the outside of the vehicle and improving the driving experience of the vehicle occupants. On the other hand, it can also increase the vertical display range of the laminated glass 120, thereby increasing the visible field of view and safety redundancy, improving the safety performance of the vehicle 1000, and ensuring the driving safety of the vehicle occupants. In addition, in the direction from the semi-transparent display area 122a to the viewing area 121, the main image transmittance TL of the part of the semi-transparent display area 122a covered by the functional reflection layer 20 1 remains unchanged, or the main image transmittance TL of the part of the semi-transparent display area 122a covered by the functional reflection layer 20 1 gradually increases. In some further embodiments, the main image transmittance TL 1 can also be greater than or equal to 20%, and even the main image transmittance TL 1 can be greater than or equal to 30%. In this way, a clearer view of the outside of the vehicle can be obtained. Among them, specifically, the main image transmittance TL of the part of the semi-transparent display area 122a covered by the functional reflection layer 20 1 can be set to 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, etc. It can be understood that since the main image transmittance TL 1 cannot be actively adjusted, but needs to be indirectly adjusted by controlling other relevant factors, the value of the main image transmittance TL 1 in actual situations can be any value near the above-mentioned values, and this application does not make specific limitations on this.

[0057] In this embodiment, the main image transmittance TL of the part of the semi-transparent display area 122a covered by the functional reflection layer 20 1 is greater than the secondary image transmittance TL of the part of the semi-transparent display area 122a covered by the functional reflection layer 20 2 . Among them, the main image transmittance TL of the part of the semi-transparent display area 122a covered by the functional reflection layer 20 1 and the secondary image transmittance TL of the part of the semi-transparent display area 122a covered by the functional reflection layer 20 2 The ratio TT12 ≥15. In this setting, the transmitted main image formed by the natural light 2000 in the human eye can be made clearer, while the transmitted double image formed by the natural light 2000 in the human eye is relatively dim, so that the information outside the vehicle observed by the driver and passengers through the translucent display area 122a is clearer. Furthermore, it is also beneficial to improve the visibility of the external environment information for the driver and passengers, improve the safety performance of the vehicle 1000, and ensure the driving safety of the driver and passengers.

[0058] In some embodiments of the present application, compared with the traditional black-edge display glass, it is proposed to completely or partially replace the low-transmittance ink with a translucent material in the black-edge display area to form a translucent display area 122a that can be used for projection display. On the premise of meeting the requirements of projection display, it can still have a certain effect of transmitting external visible light, so as to achieve the purpose of increasing the field of view. The translucent display area 122a, as part of the projection reflection, needs to be covered by the functional reflection layer 20 to achieve a high-quality projection reflection effect. However, at the same time, the functional reflection layer 20 will also reflect the natural light 2000 that passes through the laminated glass 120 from outside the vehicle into the vehicle. The reflected light will be reflected again on the outer surface of the laminated glass 120, and then a transmitted double image is formed. In the translucent display area 122a, since there may already be a reflected main image and a reflected sub-image generated by the projection reflection, if the transmitted double image formed by the incidence of the natural light 2000 is superimposed, it is relatively unfavorable to the final display effect of the translucent display area 122a.

[0059] Further, through comparative verification, it is found that for the main image transmittance TL of the part of the translucent display area 122a covered by the functional reflection layer 20 1 If it is less than 10%, the external transmitted main image cannot be seen clearly. When the main image transmittance TL of the part of the translucent display area 122a covered by the functional reflection layer 20 1 is equal to or greater than 10%, the image outside the vehicle can be seen relatively clearly. However, at the same time, as the main image transmittance TL 1 increases, the sub-image transmittance TL 2 will also increase accordingly, which will lead to the problem of ghosting of the transmitted main image and the transmitted double image. Surprisingly, through verification, it is found that when the ratio TT 2 of the main image transmittance TL1 and the sub-image transmittance TL of the part of the translucent display area 122a covered by the functional reflection layer 20 12 ≥15, the sub-image transmittance TL 2 is relatively small. At this time, the image information outside the vehicle can be clearly observed by the occupants in the vehicle and it is difficult to observe the transmitted double image.

[0060] In some embodiments, the translucent display area 122a only needs to meet the necessary visibility, so the main image transmittance TL of the portion of the translucent display area 122a covered by the functional reflective layer 20 1 is set to be less than or equal to 70%, so as to avoid the secondary image transmittance TL 2 from being too large and being easily perceptible.

[0061] In some embodiments, in order to achieve a better display effect, the ratio TT of the main image transmittance TL to the secondary image transmittance TL of the portion of the translucent display area 122a covered by the functional reflective layer 20 1 and the secondary image transmittance TL 2 is 12 ≥20.

[0062] Among them, surprisingly, the main image transmittance TL can be increased by selecting a functional reflective layer 20 with a lower reflectance for P-polarized light 1 and the secondary image transmittance TL 2 of the ratio TT 12 , because generally the reflectance R of the functional reflective layer 20 for S-polarized light S will be greater than the reflectance R of P-polarized light P . When the reflectance R of P-polarized light is increased P it will cause an increase in the reflectance R of S-polarized light S , and further lead to an increase in the total reflectance of the translucent display area 122a. The increase in the total reflectance will further cause more natural light 2000 to be reflected, resulting in a decrease in the main image transmittance TL 1 and an increase in the secondary image transmittance TL 2 .

[0063] In addition, the ratio Q of the total visible light transmittance of the portion of the translucent display area 122a covered by the functional reflective layer 20 to the total visible light transmittance of the adjacent viewing area 121 is 0.3 ≤ Q ≤ 1. In some other embodiments, the ratio Q of the total visible light transmittance of the portion of the translucent display area 122a covered by the functional reflective layer 20 to the total visible light transmittance of the adjacent viewing area 121 is 0.5 ≤ Q ≤ 1, or, 0.8 ≤ Q ≤ 1, or, 0.9 ≤ Q ≤ 1. With this setting, the transparency of the translucent display area 122a and the transparency of the viewing area 121 can be smoothly transitioned without obvious fluctuations, which helps to improve the visual effect of the vehicle occupants observing the external information through the laminated glass 120 and enhance the driving experience of the vehicle occupants.

[0064] Please continue to refer to Figure 5。The projection light 111 emitted by the projection device 110 enters the human eye after one reflection within the semi-transparent display area 122a, and a main reflected image is formed in the human eye. At this time, the visible light reflectance of the main reflected image is denoted as the main image reflectance RL 1 。Meanwhile, since the semi-transparent display area 122a is semi-transparent, the projection light 111 also enters the interior of the laminated glass 120, undergoes two refractions and one reflection in sequence, and then enters the human eye to form a reflected ghost image. At this time, the visible light reflectance of the reflected ghost image is denoted as the secondary image reflectance RL 2 。It can be understood that the part of the semi-transparent display area 122a covered by the functional reflection layer 20 has a main image reflectance RL 1 and a secondary image reflectance RL 2 for the projection light 111. The main image reflectance RL 1 is greater than the secondary image reflectance RL 2 。Among them, the ratio RR 1 of the main image reflectance RL 2 and the secondary image reflectance RL 12 of the part of the semi-transparent display area 122a covered by the functional reflection layer ≥ 15. Among them, the main image reflectance RL 1 is the reflectance of the first reflection of the S-polarized light by the functional reflection layer, and the secondary image reflectance RL 2 is the reflectance of the second reflection of the S-polarized light that passes through the functional reflection layer and enters the interior of the head-up display glass. It should be understood that in the embodiments of the present application, the projection light mainly uses S-polarized light. Therefore, in the embodiments of the present application, the main image reflectance RL 1 refers to the reflectance of the first reflection of the S-polarized light on the inner surface of the head-up display glass, and the secondary image reflectance RL 2 refers to the reflectance of the second reflection of the S-polarized light that enters the interior of the head-up display glass. Further, since in the embodiments of the present application, the main image reflectance RL 1 refers to the reflectance of the first reflection of the S-polarized light on the inner surface of the head-up display glass, in other embodiments of the present application, the reflectance RS of the head-up display glass provided with the functional reflection layer for the S-polarized light is the main image reflectance RL 1 , in other words, in the embodiments of the present application, the S-polarized light reflectance RS is equal to the main image reflectance RL 1 .

[0065] In other embodiments that are not mutually exclusive with the embodiments shown in the present application, the reflectance RS of the functional reflection layer for the S-polarized light may also not be equal to the main image reflectance RL 1 . In addition, in other embodiments that are not mutually exclusive with the embodiments shown in the present application, a mixed polarized light mainly composed of S-polarized light may also be used as the projection light. Therefore, in other embodiments, the main image reflectance RL1 and the secondary image reflectivity RL 2 It may also refer to the reflectivity of the first reflection of the mixed polarized light mainly composed of S-polarized light on the inner surface of the head-up display glass, and the reflectivity of the secondary reflection that occurs after entering the head-up display glass.

[0066] In this setting, the reflected main image formed by the projection light 111 in the human eye can be made clearer, while the reflected ghost image formed by the projection light 111 in the human eye is relatively dim, so that the image and other information presented in the translucent display area 122a of the laminated glass 120 are clear, preventing the driver and passengers from being interfered by the reflected ghost image, and improving the driving experience and driving safety of the driver and passengers.

[0067] It should be noted that when the ratio RR12 of the main image reflectivity RL1 and the secondary image reflectivity RL2 of the part of the translucent display area 122a covered by the functional reflective layer 20 is ≥ 15, the main image transmittance TL of the part of the translucent display area 122a covered by the functional reflective layer 20 1 is much greater than the secondary image transmittance TL 2 . At this time, the main image transmittance TL of the part of the translucent display area 122a covered by the functional reflective layer 20 1 can be approximately regarded as the total visible light transmittance of the translucent display area 122a.

[0068] In addition, in some embodiments, the ratio RR 1 of the main image reflectivity RL 2 and the secondary image reflectivity RL 12 of the part of the translucent display area 122a covered by the functional reflective layer 20 can also be RR12 ≥ 20, further can be RR 12 ≥ 30, can also be RR 12 ≥ 40, or RR 12 ≥ 50. Without considering other factors, theoretically, the larger the ratio of the main image reflectivity RL 1 and the secondary image reflectivity RL 2 , the better the display effect.

[0069] Please continue to refer to Figure 4 . The glass substrate 10 includes an outer glass sheet 11, an inner glass sheet 12, an intermediate layer 13, and a light barrier layer 14. Along the thickness direction of the glass substrate 10, the outer glass sheet 11 and the inner glass sheet 12 are spaced apart and oppositely arranged. Among them, the surface of the inner glass sheet 12 facing away from the outer glass sheet 11 is the inner surface 10a. The intermediate layer 13 is located between the outer glass sheet 11 and the inner glass sheet 12. The light barrier layer 14 is provided on the surface of the outer glass sheet 11 facing the inner glass sheet 12 and is located in the shielding area 123.

[0070] Specifically, the outer glass sheet 11 includes a first surface 101 and a second surface 102. Along the thickness direction of the outer glass sheet 11, the first surface 101 and the second surface 102 are arranged back to back. Among them, the first surface 101 of the outer glass sheet 11 is the outer surface 10b of the glass substrate 10. The inner glass sheet 12 includes a third surface 103 and a fourth surface 104. Along the thickness direction of the inner glass sheet 12, the third surface 103 and the fourth surface 104 are arranged back to back. Among them, the third surface 103 faces the second surface 102. The fourth surface 104 is the inner surface 10a of the glass substrate 10. The light barrier layer 14 is provided on the second surface 102 of the outer glass sheet 11. Among them, at least part of the light barrier layer 14 is located in the shielding area 123.

[0071] The intermediate layer 13 is connected between the second surface 102 and the fourth surface 104. In this embodiment, the intermediate layer 13 can be a single thermoplastic polymer film or can be formed by laminating two or more thermoplastic polymer films. The material of the thermoplastic polymer film is selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), and ionomer (SGP). It should be noted that when the intermediate layer 13 includes two or more thermoplastic polymer films, the two or more thermoplastic polymer films can be of the same or different materials to meet the needs of different scenarios.

[0072] It should be noted that during the production process, the main image transmittance TL of the semi-transparent display area 122a can be adjusted by adjusting the structure and material of the glass substrate 10 according to actual requirements. 1 so that the main image transmittance TL of the semi-transparent display area 122a 1 is greater than or equal to 10%.

[0073] In a possible implementation, the intermediate layer 13 can be used to adjust the main image transmittance TL of the semi-transparent display area 122a. 1 For example, the intermediate layer 13 can be made of a colored film layer or a gradient colored film layer, or a colored sheet or a gradient colored sheet can be embedded in the intermediate layer 13 to change the coloring components and proportions of the intermediate layer 13, thereby realizing the adjustment of the main image transmittance TL of the semi-transparent display area 122a. 1 For another example, the intermediate layer 13 can be made of a polymer film with surface printed ink, paint or pigment.

[0074] In a possible implementation, the main image transmittance TL of the semi-transparent display area 122a can be adjusted by dyeing or coloring the first surface 101, the second surface 102, the third surface 103 or the fourth surface 104. 1In a possible implementation, an inner sheet glass 12 with a dark color can also be used to adjust the main image transmittance TL of the semi-transparent display area 122a. 1 In a possible implementation, the reflectivity of the functional reflective layer 20 to the projection light 111 can also be changed, or a functional reflective layer 20 with its own coloring can be used to adjust the main image transmittance TL of the semi-transparent display area 122a. 1 。

[0075] In a possible implementation, a dimming film can be provided in the glass substrate 10 to adjust the main image transmittance TL of the semi-transparent display area 122a. 1 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 maximum visible light transmittance of the dimming film can be set according to actual production needs. For example, the maximum visible light transmittance of the dimming film can be 50%, 70%, 80%, 90%, etc. Exemplarily, when the laminated glass 120 needs to display information such as images, the maximum visible light transmittance of the dimming film can be 90% to make the dimming film in a high visible light transmittance state, so that the laminated glass 120 has a larger transparent area.

[0076] In a possible implementation, the laminated glass 120 further includes a functional layer (not shown in the figure). Specifically, the functional layer is provided between the outer sheet glass 11 and the intermediate layer 13, or the functional layer is provided between the intermediate layer 13 and the inner sheet glass 12. Among them, the functional layer can be a transparent heating conductive film layer or a heat insulation film layer, and the embodiments of the present application do not make any restrictions on this.

[0077] In this embodiment, the functional reflective layer 20 is provided on the fourth surface 104 of the inner sheet glass 12. Among them, the part of the functional reflective layer 20 located in the semi-transparent display area 122a can have a hollow pattern to achieve a gradual change in visible light transmittance, so that the driver and passengers can have a more comfortable visual experience.

[0078] In this embodiment, the refractive index n of the functional reflection layer 20 is n≥1.7. In some other embodiments, the refractive index n of the functional reflection layer 20 is n≥2, or the refractive index n of the functional reflection layer 20 is n≥2.2, or the refractive index n of the functional reflection layer 20 is n≥2.4, or the refractive index n of the functional reflection layer 20 is n≥2.6, or the refractive index n of the functional reflection layer 20 is n≥3. In this embodiment, the functional reflection layer 20 can be made of a non-metallic transparent film layer. Among them, the materials of the functional reflection layer 20 include at least one of silicon nitride, silicon-metal-hybrid nitride, aluminum nitride, gallium nitride, titanium nitride, tin oxide, manganese oxide, tungsten oxide, niobium oxide, bismuth oxide, titanium oxide, tin-zinc-hybrid oxide, zirconium oxide, scandium oxide, yttrium oxide, tantalum oxide, lanthanum oxide, cerium oxide, tellurium oxide, aluminum oxide, silicon oxide, zinc oxide, indium oxide or transition metal oxides. Exemplarily, the functional reflection layer 20 is a sol-gel coating.

[0079] In this embodiment, the functional reflection layer 20 has an S-polarized light reflectivity R for the S-polarized light of the projection light 111 S , and the functional reflection layer 20 has a P-polarized light reflectivity R for the P-polarized light of the projection light 111 p . The S-polarized light reflectivity R S is greater than the P-polarized light reflectivity R P , and the ratio K of the S-polarized light reflectivity R S to the P-polarized light reflectivity R P is K≥1.5. Preferably, K≥5, or K≥5, or K≥10, or K≥30, or K≥50. When the projection light 111 is incident on the functional reflection layer 20 at an incident angle of 70°, the S-polarized light reflectivity R S ≥40%. Preferably, the S-polarized light reflectivity R S ≥50%, or the S-polarized light reflectivity R S ≥60%, or the S-polarized light reflectivity R S ≥70%. The P-polarized light reflectivity R P <40%. Preferably, the P-polarized light reflectivity R P ≤30%, or the P-polarized light reflectivity R P ≤20%, or the P-polarized light reflectivity R P ≤10%, or the P-polarized light reflectivity R P ≤5%, or the P-polarized light reflectivity R P ≤1%. It should be noted that the wavelength ranges of the above S-polarized light and P-polarized light are both 380 nm to 780 nm.

[0080] Under this setting, on the one hand, the functional reflective layer 20 can achieve high reflection of S-polarized light, enhancing the brightness and recognition of the display content in the semi-transparent display area 122a. On the other hand, the functional reflective layer 20 can achieve low reflection of P-polarized light, reducing the overall power consumption of the black-edge display system 100 and cutting costs. At the same time, it can also enhance the transparency of the semi-transparent display area 122a and the visibility of the vehicle exterior environment for the driver and passengers, improving the driving experience and driving safety of the driver and passengers.

[0081] In this embodiment, the projection light 111 emitted by the projection device 110 is incident on the functional reflective layer 20 and forms a projection image in the semi-transparent display area 122a. It should be understood that the color of the projection light 111 emitted by the projection device 110 is mixed by the three primary colors RGB, and what the human eye sees is the projection image reflected by the functional reflective layer 20. To avoid color deviation of the projection image (such as turning red or blue, etc.) and to facilitate the matching of the color of the projection light 111 emitted by the projection device 110 with the functional reflective layer 20 for display calibration, the reflectivity curve of the functional reflective layer 20 in the visible light band should preferably change linearly. The absolute value of the maximum deviation of the reflectivity in each interval band (the interval band is 5 nm) within the established band range from the linear regression line of each interval band in this range is defined as the reflectivity deviation ΔD. When the projection light 111 is incident on the functional reflective layer 20 at an incident angle of 70°, the reflectivity deviation ΔD of the functional reflective layer 20 for S-polarized light with wavelengths from 400 nm to 700 nm s is ΔDs ≤ 3%, or ΔDs ≤ 2%, or ΔDs ≤ 1%. When the projection light 111 is incident on the functional reflective layer 20 at an incident angle of 70°, the reflectivity deviation ΔD of the functional reflective layer 20 for P-polarized light with wavelengths from 400 nm to 700 nm p is ΔDp ≤ 3%, or ΔDp ≤ 2%, or ΔDp ≤ 1%. Under this setting, the laminated glass 120 can be adapted to a variety of projection devices 110, so that the black-edge display system 100 can have a higher display color gamut coverage range.

[0082] In addition, the laminated glass 120 further includes an electric heating element (not shown in the figure) and a wire (not shown in the figure). The electric heating element is provided on the surface of the outer glass 11 facing the inner glass 12, or the electric heating element is provided on the surface of the inner glass 12 facing the outer glass 11. The electric heating element is used to heat the functional display area 122. In this embodiment, the electric heating element can be a metal wire, copper foil, silver paste, or a transparent conductive metal film, etc., to achieve heating of the functional display area 122. The wire is electrically connected between the electric heating element and the power supply of the vehicle 1000.

[0083] Please refer to Figure 6 , Figure 6 which is a schematic diagram of the projection light 111 forming a projection image 111a in the laminated glass 120.

[0084] In this embodiment, the projection light 111 emitted by the projection device 110 is incident on the functional reflection layer 20, and a projection image 111a is formed in the translucent display area 122a. When a human eye observes the projection image 111a, the position where the human eye is located is the observation position 3000. Along the direction of the line connecting the center of the projection image 111a and the observation position 3000, the distance between the projection image 111a and the surface of the laminated glass 120 facing the outside of the vehicle 1000 is less than or equal to 1 m. That is to say, along the direction of the line connecting the center of the projection image 111a and the observation position 3000, the distance between the projection image 111a and the outer surface 10b is less than or equal to 1 m. Preferably, along the direction of the line connecting the center of the projection image 111a and the observation position 3000, the distance between the projection image 111a and the outer surface 10b is less than or equal to 0.5 m, or the distance between the projection image 111a and the outer surface 10b is less than or equal to 0.3 m, or the distance between the projection image 111a and the outer surface 10b is less than or equal to 0.2 m.

[0085] Under this setting, it can be ensured that the projection image 111a does not exceed the front of the vehicle and is near the surface of the engine hood of the vehicle 1000, and unreasonable states such as the projection image 111a seemingly drilling too deep into the engine compartment of the vehicle 1000 can be avoided, ensuring the authenticity of the projection image 111a. At the same time, it can also reduce the superimposed interference caused by factors such as the road surface, the vehicle 1000 ahead, or the irregular shape of the rear end of the engine hood, thereby helping to enhance the visibility of the external environment of the vehicle for the driver and passengers and improving the driving experience and driving safety of the driver and passengers.

[0086] Please refer to Figure 7 、 Figure 8 and Figure 9 , Figure 7 is Figure 1 the schematic cross-sectional structure diagram of the black-edge display system 100 in the second embodiment in the vehicle 1000 shown in Figure 8 is Figure 7 the schematic structure diagram of the laminated glass 120 in the black-edge display system 100 shown in Figure 9 is Figure 8 the schematic cross-sectional structure diagram of the laminated glass 120 shown in after being cut along B-B.

[0087] The difference between the laminated glass 120 shown in this embodiment and the laminated glass 120 shown in the above first embodiment is that the functional display area 122 further includes an opaque display area 122b. The opaque display area 122b is located on the side of the translucent display area 122a close to the shielding area 123. Among them, at least part of the opaque display area 122b is covered by the functional reflection layer 20.

[0088] In this embodiment, the total visible light transmittance of the opaque display area 122b is less than that of the translucent display area 122a. Among them, the main image transmittance of the opaque display area 122b is less than 10%. In the direction from the opaque display area 122b to the translucent display area 122a, the main image transmittance of the opaque display area 122b remains unchanged. For example, in the direction from the opaque display area 122b to the translucent display area 122a, the main image transmittance of the opaque display area 122b can be 8%, 5%, 3%, 1%, 0.1%, 0.02% or 0. In some other embodiments, in the direction from the opaque display area 122b to the translucent display area 122a, the main image transmittance of the opaque display area 122b gradually increases.

[0089] Under this setting, the opaque display area 122b can serve as the display background for the projection image 111a to be displayed, which can better block the external ambient light, avoid unnecessary interference to the line of sight, and can also improve the contrast between the projection image 111a and the display background, as well as achieve a higher color gamut, making the projection image 111a display more clearly.

[0090] In this embodiment, the functional reflective layer 20 covers the part of the inner surface 10a located in the opaque display area 122b and the part of the inner surface 10a of the glass substrate 10 located in the translucent display area 122a. The light barrier layer 14 covers the part of the second surface 102 located in the shielding area 123 and the part of the second surface 102 located in the opaque display area 122b.

[0091] Specifically, the light barrier layer 14 includes a connected first sub - part 141 and a second sub - part 142. Among them, the first sub - part 141 is located in the shielding area 123 and covers the part of the second surface 102 located in the shielding area 123. The second sub - part 142 is located in the opaque display area 122b and covers the part of the second surface 102 located in the opaque display area 122b. It can also be understood that the light barrier layer 14 can adjust the main image transmittance of the opaque display area 122b. By extending the light barrier layer 14 to the functional display area 122, the main image transmittance of this part of the functional display area 122 can be reduced, thereby forming the opaque display area 122b.

[0092] In some other embodiments, the main image transmittance of the opaque display area 122b can also be adjusted using an opaque polymer film or a dimming film. Among them, the opaque polymer film can be a polymer film with body coloring, a polymer film with surface-printed ink, paint or pigment, or a polymer film that is dyed or colored. 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 lowest visible light transmittance of the dimming film is less than or equal to 10%. For example, the lowest visible light transmittance of the dimming film can be 8%, 5%, 4%, 3%, 2%, 1%, 0.5% or 0%. In addition, the highest visible light transmittance of the dimming film is set according to actual production needs. For example, the highest visible light transmittance of the dimming film can be 10%, 20%, 30%, 50% or 80%, etc. In addition, when information needs to be displayed in the opaque display area 122b, the dimming film is in an opaque state. At this time, the visible light transmittance of the dimming film is less than or equal to 5%, or even 0%. With this setting, the contrast between the projected image 111a and the display background can be increased, enabling the driver and passengers to observe the projected image 111a more clearly and helping to improve the user experience of the driver and passengers.

[0093] Please refer to Figure 10 , Figure 10 is Figure 1 the schematic cross-sectional structure diagram of the laminated glass 120 of the black-edge display system 100 in the vehicle 1000 shown in the third embodiment.

[0094] The difference between the laminated glass 120 shown in this embodiment and the laminated glass 120 shown in the above second embodiment is that the functional display area 122 further includes at least one first extended display area 122d located in the shielding area 123, and the first extended display area 122d is connected to the opaque display area 122b. Among them, at least a part of the first extended display area 122d is covered by the functional reflection layer 20. In this embodiment, the total visible light transmittance of the first extended display area 122d is less than or equal to the total visible light transmittance of the opaque display area. Among them, the main image transmittance TL 1 , the main image transmittance TL 1 of the part of the first extended display area 122d covered by the functional reflection layer 20 2 and the secondary image transmittance TL 12 ratio TT 1 , and the main image reflectance RL 2 and the secondary image reflectance RL 12 of the part of the first extended display area 122d covered by the functional reflection layer 20 to the projection light 111

[0095] Under this setting, the first extended display area 122d can also serve as the display background of the projection image 111a, further blocking external ambient light, avoiding unnecessary interference to the line of sight, further improving the contrast between the projection image 111a and the display background, and achieving a higher color gamut, making the projection image 111a clearer.

[0096] In addition, in this embodiment, the functional reflection layer 20 includes a first part 21, a second part 22, and a third part 23 connected in sequence. Among them, the first part 21 is located in the translucent display area 122a of the functional display area 122 and covers the part of the inner surface 10a located in the translucent display area 122a. The second part 22 is located in the opaque display area 122b and covers the part of the inner surface 10a located in the opaque display area 122b. The third part 23 is located in the first extended display area 122d and covers the part of the inner surface 10a located in the first extended display area 122d.

[0097] Please refer to Figure 11 , Figure 11 is Figure 1 the schematic cross-sectional structure diagram of the laminated glass 120 of the black edge display system 100 in the vehicle 1000 shown in the fourth embodiment.

[0098] The difference between the laminated glass 120 shown in this embodiment and the laminated glass 120 shown in the above first embodiment is that the functional display area 122 further includes at least one second extended display area 122c located in the visual field area 121. The second extended display area 122c is connected to the translucent display area 122a, and at least part of the second extended display area 122c is covered by the functional reflection layer 20. Among them, the total visible light transmittance of the second extended display area 122c is greater than or equal to the total visible light transmittance of the translucent display area. The main image transmittance TL 1 , the main image transmittance TL 1 of the part of the second extended display area 122c covered by the functional reflection layer 20 2 and the secondary image transmittance TL 12 The ratio TT 1 of, and the main image reflectance RL 2 and the secondary image reflectance RL 12 of the part of the second extended display area 122c covered by the functional reflection layer 20 to the projection light 111

[0099] In this embodiment, when the second extended display area 122c extends to the field of view B area, the total visible light transmittance of the second extended display area 122c is greater than or equal to 70%. Among them, the total visible light transmittance of a part of the second extended display area 122c is greater than or equal to 75%. Preferably, the total visible light transmittance of the second extended display area 122c is greater than or equal to 85%, or the total visible light transmittance of the second extended display area 122c is greater than or equal to 88%, or the total visible light transmittance of the second extended display area 122c is greater than or equal to 90%. In some other embodiments, when the second extended display area 122c only extends to the field of view B deduction area, the total visible light transmittance of the second extended display area 122c can be less than 70%, or the vertical display range of the laminated glass 120 can be increased to improve the display effect of the laminated glass 120.

[0100] When the projection light 111 is incident on the part of the second extended display area 122c covered by the functional reflection layer 20 at an incident angle of 65°, the S-polarized light reflectance R S ≥55%, and the P-polarized light reflectance R P ≤15%. When the projection light 111 is incident on the functional reflection layer 20 at an incident angle of 0°, the S-polarized light reflectance R S ≤27%, and the ratio a of the S-polarized light reflectance R S to the P-polarized light reflectance R P is 0.9 ≤ a ≤ 1.1. That is, when the projection light 111 is incident on the functional reflection layer 20 at an incident angle of 0°, the S-polarized light reflectance R S is approximately equal to the P-polarized light reflectance R P .

[0101] With this setting, the vertical display range of the laminated glass 120 can be increased to improve the display effect of the laminated glass 120. At the same time, since the main image transmittance of the semi-transparent display area 122a is greater than or equal to 70% and the transparency is high, the laminated glass 120 has good permeability and visibility outside the vehicle, thus effectively solving the problem of insufficient transparency of the laminated glass 120 and improving the driving experience of the passengers.

[0102] In this embodiment, the functional reflection layer 20 includes a first part 21, a second part 22, and a third part 23 that are connected in sequence. Among them, the first part 21 is located in the semi-transparent display area 122a of the functional display area 122 and covers the part of the inner surface 10a located in the semi-transparent display area 122a. The second part 22 is located in the second extended display area 122c and covers the part of the inner surface 10a located in the second extended display area 122c. The third part 23 is located in the viewing area 121 and covers the part of the inner surface 10a located in the viewing area 121.

[0103] Please refer toFigure 12 , Figure 12 is Figure 4 the simulated curve graph of the reflectivity and transmittance indexes of the laminated glass 120 shown

[0104] This application conducts simulation calculations on the laminated glass 120 shown in the first embodiment to understand the main image reflectivity RL of the laminated glass 120 1 , the secondary image reflectivity RL 2 , the main image transmittance TL 1 and the secondary image transmittance TL 2 and other relationships between indexes. The specific simulation conditions are as follows:

[0105] This application provides Examples A - E. When the incident angle of the projection light 111 is 0°, the maximum value of the visible light transmittance TL of Examples A - E under the condition of 0° incident angle 0 is set to 92%. In Examples A - E, the intermediate layer 13 is used as the adjustment film layer for adjusting the main image transmittance TL of the semi - transparent display area 122a 1 . Examples A - E all use a uniform transparent thin film layer as the functional reflection layer 20, and the functional reflection layer 20 of Examples A - E is specular reflection. Among them, the S - polarized light reflectivity Rs and P - polarized light reflectivity Rp of the functional reflection layer 20 of Examples A - E are shown in Table 1. The natural light 2000 and the projection light 111 are both incident on Examples A - E at an incident angle of 70°, and multiple refractions and reflections occur. The refraction angle, reflection ratio, transmittance ratio, light intensity, etc. of the natural light 2000 and the projection light 111 at the interface can be calculated using Snell's Law, Fresnel Formula, and Beer - Lambert Law. Calculate the ratio RR 1 of the main image reflectivity RL 2 and the secondary image reflectivity RL 12 , as well as the ratio TT 1 of the main image transmittance TL 2 and the secondary image transmittance TL 12 of Examples A - E. The experimental results are as Figure 12 shown

[0106] Table 1

[0107] Number S-polarized light reflectivity Rs P-polarized light reflectivity Rp Example A 80％ 1.4％ Example B 59.5％ 1.4％ Example C 40％ 1.4％ Example D 59.5％ 40％ Example E 35％ 20％

[0108] According to Figure 12 the experimental results shown, by reasonably setting the S - polarized light reflectivity Rs and P - polarized light reflectivity Rp of the functional reflection layer 20, it is possible to simultaneously make the main image transmittance TL of the laminated glass 120 1 ≥10%, and the main image reflectivity RL of the laminated glass 1201 and the ratio RR12 of the secondary image reflectance RL 2 ≥ 15, and the ratio TT of the primary image transmittance TL 1 and the secondary image transmittance TL 2 ≥ 15, thereby obtaining a product that meets the requirements. Among them, the primary image reflectance RL of the laminated glass 120 12 ≥ 15, thereby obtaining a product that meets the requirements. Among them, the primary image reflectance RL of the laminated glass 120 1 , the secondary image reflectance RL 2 , the primary image transmittance TL 1 and the secondary image transmittance TL 2 and other indicators are as follows:

[0109] As the total visible light transmittance of the laminated glass 120 increases, the primary image transmittance TL of the laminated glass 120 1 will also increase. When the P-polarized light reflectance Rp remains unchanged and the natural light 2000 is incident at an incident angle of 70°, the primary image transmittance TL of the laminated glass 120 1 has a maximum value. For example, the maximum value of the primary image transmittance TL of Example A 1 is 54.3%, and the maximum value of the primary image transmittance TL of Example B 1 is 61.4%, and the maximum value of the primary image transmittance TL of Example C 1 is 68.2%.

[0110] When the natural light 2000 is incident at an incident angle of 70°, as the primary image transmittance TL of the laminated glass 120 1 increases, the ratio RR of the primary image reflectance RL 1 and the secondary image reflectance RL 2 of the laminated glass 120 12 , and the ratio TT of the primary image transmittance TL 1 and the secondary image transmittance TL 2 of the laminated glass 120 12 will all decrease.

[0111] When the natural light 2000 is incident at an incident angle of 70° and the primary image transmittance TL of the laminated glass 120 1 and the P-polarized light reflectance Rp of the functional reflective layer 20 remain unchanged, the greater the S-polarized light reflectance Rs of the functional reflective layer 20, the greater the ratio RR of the primary image reflectance RL 1 and the secondary image reflectance RL 2 of the laminated glass 120 12 .

[0112] The following will be described in conjunction with specific examples, but the present invention is not limited to the following embodiments.

[0113] Please refer to Figure 13 and Figure 14 ,Figure 13 It is the graph of the S - polarization light reflectivity and P - polarization light reflectivity of the functional reflection layer 20 in the laminated glass 120 shown in Figure 9 when the projection light 111 is incident. Figure 14 It is the relative emission spectrum graph of the light sources of two types of display screens.

[0114] Examples 1 - 2

[0115] Examples 1 - 2 are specific structural examples of the laminated glass 120 in the above - mentioned second embodiment. Prepare the outer glass 11, inner glass 12, intermediate layer 13, light - blocking layer 14 and functional reflection layer 20 in Examples 1 - 2. Set the light - blocking layer 14 on the second surface 102 of the outer glass 11. Among them, the light - blocking layer 14 covers the part of the second surface 102 located in the shielding area 123 and the part of the second surface 102 located in the opaque display area 122b. Connect the inner glass 12 and the outer glass 11 with the light - blocking layer 14 together through the intermediate layer 13, so as to obtain the glass substrate 10 in Examples 1 - 2.

[0116] The functional reflection layer 20 is formed on the fourth surface 104 of the inner glass 12 by screen printing and high - temperature sintering with mirror ink. Among them, the main mass components of the mirror ink are 98.4% of TiO 2 and 0.85% of SiO 2 . The mirror ink is printed on the fourth surface 104 according to specific positions and patterns. After high - temperature sintering at 550 °C to 690 °C, the mirror ink adheres firmly to the fourth surface 104. After sintering, the mirror ink has a high - reflection effect like a mirror and a transparent and visible effect, and also has good hardness and wear - resistant characteristics, etc. The visible - light reflectivity of the single side of the functional reflection layer 20 at different incident angles is shown in Table 2, and the graph of the S - polarization light reflectivity Rs and P - polarization light reflectivity Rp of the functional reflection layer 20 is as shown in Figure 12 shown. According to Figure 13 it can be known that when the projection light 111 is incident on the functional reflection layer 20 at an incident angle of 70°, the P - polarization light reflectivity Rp is relatively low, and the S - polarization light reflectivity curve and P - polarization light reflectivity curve in the wavelength range of 400 nm to 700 nm are approximately flat and show a linear change. Among them, ΔDs is 0.42% and ΔDp is 0.34%.

[0117] Table 2

[0118]

[0119] Example 1: The outer glass sheet 11 and the inner glass sheet 12 are both made of transparent glass with a thickness of 2.1 mm, and the intermediate layer 13 is made of light gray PVB with a thickness of 0.76 mm. Among them, in the direction from the self-shielding area 123 to the viewing area 121, the color of the light gray PVB gradually becomes lighter. In Example 1, the main image transmittance of the viewing area 121 for natural light 2000 incident at an incident angle of 0° is 88.8%.

[0120] Example 2: The outer glass sheet 11 is made of green heat-insulating glass with a thickness of 2.1 mm, the inner glass sheet 12 is made of green glass with a thickness of 2.1 mm, and the intermediate layer 13 is made of PVB with a thickness of 0.76 mm. In Example 2, the main image transmittance of the viewing area 121 for natural light 2000 incident at an incident angle of 0° is 74.6%.

[0121] Two display screens are respectively used as the projection device 110, which are arranged below the function display area 122 of the laminated glass 120 in Examples 1-2 and project image information. At this time, the light of the two display screens mainly enters the observer's eyes as S-polarized light. Observe and record information such as the clarity of the displayed image at the set observation position 3000, and record the simulation measurement results in Table 3. Among them, the incident angle of observing the center position of the opaque display area 122b from the observation position 3000 is 70.5°, the incident angle of observing the center position of the function display area 122 from the observation position 3000 is 70.0°, and the incident angle of observing the side of the viewing area 121 close to the function display area 122 from the observation position 3000 is 68°. The refraction angle, reflection ratio, transmittance, light intensity, etc. of the light at the interfaces of the viewing area 121, function display area 122, and opaque display area 122b of the laminated glass 120 can be calculated using Snell's Law, Fresnel Formula, and Beer-Lambert Law.

[0122] In addition, for the sake of convenience of description, the above two display screens are respectively named Display Screen One and Display Screen Two. Exemplarily, Display Screen One is a TFT-LCD display screen, and Display Screen Two is an OLED display screen. Among them, an S-polarizing film is provided on the second display screen. Both Display Screen One and Display Screen Two use S-polarized light for incidence, and their relative emission spectral curves of the light sources are as Figure 14 shown.

[0123] Table 3

[0124]

[0125]

[0126] According to the above experimental results, it can be seen that in Example 1, the main image transmittance TL of the function display area 1221 The ratio TT of 2 to the secondary image transmittance TL 12 is 105, and the main image reflectance RL 1 and the secondary image reflectance RL 2 of the functional display area 122 12 The ratio RR is 52.5. At the same time, from the observation position of 3000, the center position of the functional display area 122 is observed, and the external information of the functional display area 122 is very clear. The main image reflectance RL 1 and the secondary image reflectance RL 2 of the opaque display area 122b 12 The ratio RR is greater than 100. In addition, from the observation position of 3000, the side of the viewing area 121 close to the functional display area 122 is observed, and the external information of the viewing area 121 is very clear. In Example 2, the main image transmittance TL 1 and the secondary image transmittance TL 2 of the functional display area 122 12 The ratio TT is 40, and the main image reflectance RL 1 and the secondary image reflectance RL 2 of the functional display area 122 12 The ratio RR is 20. At the same time, from the observation position of 3000, the center position of the functional display area 122 is observed, and the external information of the functional display area 122 is very clear. The main image reflectance RL 1 and the secondary image reflectance RL 2 of the opaque display area 122b 12 The ratio RR is greater than 100. In addition, from the observation position of 3000, the side of the viewing area 121 close to the functional display area 122 is observed, and the external information of the viewing area 121 is clear. This indicates that the laminated glasses 120 in Examples 1-2 all have the ability to display image information in the functional display area 122 and all have a certain visibility for the displayed image information. Among them, the external information display effect of the laminated glass 120 in Example 2 is better and brighter. At the same time, it also has the effect of visible external information and has clear visibility for the external information, and almost no transmission ghosting can be felt. Among them, the reflection ghosting of the laminated glass 120 in Example 1 is almost invisible. The reflection ghosting of the laminated glass 120 in Example 2 is acceptable in the daytime conventional scene, and there is a little reflection ghosting in the nighttime low-brightness scene or with a low-brightness background (such as the reflection image on a black engine hood), which is related to factors such as the actual use scene, observation distance, and human eye vision.

[0127] In Example 1, the main image transmittance TL 1 of the functional display area 122 1 and the main image transmittance TL1 The ratio Q of the main image transmittance TL to that of the adjacent visual field area 121 1 is 84.0%. Compared with Example 1, the main image transmittance TL of the functional display area 122 in Example 2 1 and the main image transmittance TL of the adjacent visual field area 121 1 has a larger ratio Q. This indicates that the transparency transition between the functional display area 122 and the visual field area 121 in Example 2 is smoother, and the visual effect is better.

[0128] In addition, the S-polarized light reflectivity curve and the P-polarized light reflectivity curve of the functional reflective layer 20 in Examples 1-2 both show a substantially linear change. The color after reflection by the laminated glass 120 is directly related to the display screen light source parameters. Under the parameter settings of the above-mentioned Display Screen 1 and Display Screen 2, the virtual image that cannot be seen by the human eye is color-shifted. This indicates that when the main image reflectivity curve of the functional reflective layer 20 changes approximately linearly, it is more convenient to adjust the display color of the image information displayed by the laminated glass 120, thereby ensuring good display effect of the laminated glass 120.

[0129] The above has introduced the embodiments of the present application in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A laminated glass, characterized in that: The laminated glass comprises a glass substrate and a functional reflective layer, wherein the glass substrate comprises an outer glass, an inner glass and an intermediate layer, wherein along the thickness direction of the glass substrate, the outer glass and the inner glass are spaced and arranged opposite to each other, and the intermediate layer is located between the outer glass and the inner glass; The glass substrate comprises an inner surface, the functional reflective layer is arranged on the inner surface, and the functional reflective layer is used to reflect the projection light; The laminated glass comprises a viewing area, a functional display area and a shielding area, the functional display area comprises at least one semi-transparent display area located between the viewing area and the shielding area, the total visible light transmittance of the semi-transparent display area is less than or equal to the total visible light transmittance of the viewing area and greater than the total visible light transmittance of the shielding area, and the semi-transparent display area is at least partially covered by the functional reflective layer; The main image transmittance TL1 of the part of the semi-transparent display area covered by the functional reflective layer is ≥10%; The ratio TT of the primary image transmittance TL1 and the secondary image transmittance TL2 of the part of the semi-transparent display area covered by the functional reflective layer 12 ≥15.

2. The laminated glass according to claim 1, characterized in that: The main image transmittance TL1 of the portion of the semi-transparent display area covered by the functional reflective layer is ≥20%, or TL1 is ≥30%.

3. The laminated glass according to claim 1, characterized in that: The ratio TT of the primary image transmittance TL1 and the secondary image transmittance TL2 of the part of the semi-transparent display area covered by the functional reflective layer 12 ≥20.

4. The laminated glass according to claim 1, characterized in that: The functional reflection layer has an S-polarized light reflectivity R S The functional reflective layer has a P polarized light reflectivity R P , the P polarized light reflectivity R P Less than the S polarized light reflectivity R S , the S polarized light reflectivity R S With the P polarized light reflectivity R P The ratio K≥1.

5.

5. The laminated glass according to claim 4, characterized in that: When the projection light is incident on the functional reflective layer at an incident angle of 70°, the S-polarized light reflectivity R S ≥40%, the P polarized light reflectivity R P <40%, or the P polarized light reflectivity R P ≤30%, or the P polarized light reflectivity R P ≤20%, or the P polarized light reflectivity R P ≤10%.

6. The laminated glass according to claim 1, characterized in that: The refractive index of the functional reflective layer is n≥1.

7.

7. The laminated glass according to claim 1, characterized in that: The functional reflective layer is a sol-gel coating.

8. The laminated glass according to claim 1, characterized in that: The material of the functional reflective layer includes at least one of silicon nitride, silicon-metal mixed nitride, aluminum nitride, gallium nitride, titanium nitride, tin oxide, manganese oxide, tungsten oxide, niobium oxide, bismuth oxide, titanium oxide, tin-zinc mixed oxide, zirconium oxide, scandium oxide, yttrium oxide, tantalum oxide, lanthanum oxide, cerium oxide, tellurium oxide, aluminum oxide, silicon oxide, zinc oxide, indium oxide or transition metal oxide.

9. The laminated glass according to any one of claims 1 to 8, characterized in that: In the direction from the semi-transparent display area to the viewing area, the main image transmittance TL1 of the part of the semi-transparent display area covered by the functional reflective layer remains unchanged, or the main image transmittance TL1 of the part of the semi-transparent display area covered by the functional reflective layer gradually increases.

10. The laminated glass according to any one of claims 1 to 8, characterized in that: The functional display area also includes an opaque display area with a main image transmittance less than 10%, and the opaque display area is located on a side of the semi-transparent display area close to the shielding area, and the total visible light transmittance of the opaque display area is less than the total visible light transmittance of the semi-transparent display area.

11. The laminated glass according to claim 10, characterized in that: The opaque display area is at least partially covered by the functional reflective layer.

12. The laminated glass according to claim 10, characterized in that: The functional display area also includes at least one first extended display area located in the shielding area, the first extended display area is connected to the opaque display area, the first extended display area is at least partially covered by the functional reflective layer, and the total visible light transmittance of the first extended display area is less than or equal to the total visible light transmittance of the opaque display area.

13. The laminated glass according to claim 1, characterized in that: The functional display area also includes at least one second extended display area located in the field of view, the second extended display area is connected to the semi-transparent display area, the second extended display area is at least partially covered by the functional reflective layer, and the total visible light transmittance of the second extended display area is greater than or equal to the total visible light transmittance of the semi-transparent display area.

14. The laminated glass according to claim 1, characterized in that: The ratio F of the area of ​​the semi-transparent display region to the area of ​​the functional display region is 10%≤F≤100%.

15. The laminated glass according to claim 1, characterized in that: The ratio Q of the total visible light transmittance of the portion of the semi-transparent display area covered by the functional reflective layer to the total visible light transmittance of the adjacent viewing area is 0.3≤Q≤1, or 0.5≤Q≤1, or 0.8≤Q≤1, or 0.9≤Q≤1.

16. A vehicle, characterized in that: The invention comprises a projection device and the laminated glass according to any one of claims 1 to 15, wherein the projection device is used to emit the projection light to the laminated glass.

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