Anti-dazzle rear-view mirror, electrochromic element and anti-dazzle rear-view mirror

Abstract

The application provides a kind of anti-dazzle rearview mirror lens, electrochromic element and anti-dazzle rearview mirror, the lens includes first transparent substrate, electrochromic layer and second transparent substrate from bottom to top sequentially stacked, and uses sealing portion to seal electrochromic layer, at least same side of second transparent substrate and electrochromic layer is bent to the back of rearview mirror lens and is arranged to form curved edge, so that the sealing portion for sealing electrochromic layer arranged in the curved edge is hidden in the side of rearview mirror lens, the projection distance of sealing portion on the plane of second transparent substrate is reduced, so that when observing from the front of rearview mirror lens, the width of non-colorable area is reduced, the proportion of anti-dazzle area of rearview mirror lens is increased, the safety is improved, and the visual experience of user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrochromic technology, and in particular to an anti-dazzle rearview mirror lens, an electrochromic element and an anti-dazzle rearview mirror. BACKGROUND

[0002] The electrochromic phenomenon refers to a reversible color change of a material under the action of an external electric field. The essence of electrochromism is that a material undergoes an oxidation-reduction reaction under the action of an external electric field and electric current, resulting in a change in its structure, and thus a change in the absorption spectrum and optical properties (such as absorbance, transmittance and reflectance), which in appearance is a reversible change in color and transparency. In recent years, electrochromic devices have been widely used in energy-saving windows, automobile rearview mirrors, display devices, mobile terminals and other fields, and have good market application prospects.

[0003] Since electrochromic materials are extremely sensitive to water vapor, they need to be well sealed to prevent water vapor from the external environment from entering the interior of the electrochromic device and causing damage to the electrochromic material and failure of the device, so a sealing portion is provided around the electrochromic material. However, the sealing portion cannot change color, so when the electrochromic material is applied to an automobile rearview mirror, it will affect the appearance consistency of the product when viewed from the mirror surface. Therefore, in the prior art, a decorative ring is further provided on the mirror surface to shield the sealing portion.

[0004] Please refer to Figure 1 , Figure 1 is a schematic diagram of the structure of an anti-dazzle automobile rearview mirror in the prior art, which includes a housing 10', a first transparent substrate 20' provided on the inner side of the housing 10', a reflective coating 22' provided on the surface of the first transparent substrate 20', a second transparent substrate 30' provided in spaced relation to the first transparent substrate 20', an electrochromic layer 50' enclosed between the first transparent substrate 20' and the second transparent substrate 30', a sealing portion 40' for enclosing the electrochromic layer 50', and a decorative ring 32' provided on the second transparent substrate 30' for shielding the sealing portion 40'.

[0005] In the prior anti-dazzle rearview mirror, although the color of the decorative ring 32' is generally consistent with the color of the reflective coating 22' on the first transparent substrate 20' so that the decorative ring 32' and the reflective coating 22' are as close as possible in color and reflectivity, the decorative ring 32' still cannot change color, resulting in the area shielded by the decorative ring 32' being unable to achieve the anti-dazzle function, and the shielded area being large, which is not safe and the visual experience is poor. In particular, after the color of the electrochromic layer 50' changes, the color difference between the decorative ring 32' and the other areas of the first transparent substrate 30' will be large. SUMMARY

[0006] The application aims to provide an anti-dazzling rearview mirror lens, which aims to reduce the shielding area of the anti-dazzling rearview mirror lens caused by the sealing part, increase the anti-dazzling area, improve the safety, and improve the visual experience of the user.

[0007] To achieve the above object, the application provides an anti-dazzling rearview mirror lens, comprising:

[0008] a first transparent substrate having opposite first and second surfaces;

[0009] a reflective coating layer arranged on the first surface or the second surface of the first transparent substrate;

[0010] a second transparent substrate arranged in a stacked manner with the first transparent substrate to form a spacing space between the first and second transparent substrates;

[0011] a sealing part for enclosing the periphery of the spacing space, so that the first and second transparent substrates and the sealing part form a containing space;

[0012] an electrochromic layer arranged in the containing space;

[0013] wherein one side of the first transparent substrate is the back surface of the rearview mirror lens, one side of the second transparent substrate is the front surface of the rearview mirror lens, and at least the same side of the second transparent substrate and the electrochromic layer is arranged in a curved manner to form a curved side towards the back surface of the rearview mirror lens, so as to reduce the projection length of the sealing part on the plane of the second transparent substrate and increase the proportion of the anti-dazzling area of the anti-dazzling rearview mirror lens.

[0014] The rearview mirror lens comprises opposite back and front surfaces, wherein, as defined from the direction of the user observing the rearview mirror, the front surface is the side facing the user and is a light-transmitting surface, and the back surface is the side facing away from the user and is a reflecting surface. The first transparent substrate is provided with a reflective coating layer to form a mirror surface for reflection, serving as the back surface of the rearview mirror lens, and the second transparent substrate serves as the front surface of the rearview mirror lens. The first and second transparent substrates may, for example, be glass substrates.

[0015] The first surface of the first transparent substrate is the side facing away from the second transparent substrate, and the second surface is the side facing the second transparent substrate, i.e. the first surface is the side where the back surface of the rearview mirror lens is located.

[0016] The present application bends at least one same side of the second transparent substrate and the electrochromic layer towards the back of the rearview mirror lens to form a curved side, so that the sealing part for sealing the electrochromic layer arranged on the curved side is hidden in the side of the rearview mirror lens, the projection length of the sealing part on the plane of the second transparent substrate is reduced, so that the width of the non-variable color area is reduced when viewed from the front of the rearview mirror lens, the proportion of the anti-dazzle area of the rearview mirror lens is increased, the safety is improved, and the visual experience of the user is improved. And the rearview mirror lens scheme of the present application can further reduce the size of the rearview mirror while meeting the anti-dazzle area unchanged.

[0017] It can be understood that the automobile rearview mirror includes an inner rearview mirror and an outer rearview mirror. For the inner rearview mirror, since the glare generally comes from the headlights of the rear vehicle, and the light of the headlights is basically transmitted through the rear windshield of the automobile to the surface of the inner rearview mirror and is reflected into the human eye. The two side edges of the rearview mirror basically do not receive light transmitted through the rear windshield of the automobile, so the two side edges have no higher requirement on the anti-dazzle function than the lower edge and the upper edge, so the side of the second transparent substrate and the electrochromic layer bent towards the back of the rearview mirror lens is preferably the lower edge or the upper edge of the inner rearview mirror, or the lower edge and the upper edge.

[0018] For the automobile outer rearview mirror, the inner side of the outer rearview mirror (the right side of the left rearview mirror and the left side of the right rearview mirror) is easy to be blocked due to the field of view, so the inner side of the outer rearview mirror has no higher requirement on the anti-dazzle function than the upper side and the lower side and the outer side. Therefore, the side of the second transparent substrate and the electrochromic layer bent towards the back of the rearview mirror lens is preferably the upper side or the lower side or the outer side of the outer rearview mirror, or any combination of the upper side, the lower side and the outer side.

[0019] Since the process of bending the second transparent substrate and the electrochromic layer is difficult, affects the production capacity, and has high cost, the side with low requirement on the anti-dazzle function of the rearview mirror is not bent, which can save cost, reduce process difficulty, and improve production capacity.

[0020] The first transparent substrate, the electrochromic layer and the second transparent substrate can be connected through an adhesive layer, and the adhesive layer is an optically transparent adhesive material, which can be polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), OCA (optically clear adhesive), SCA optical adhesive, ionic interlayer film (Surper Safe Glas, SGP), liquid optical adhesive LOCA (Liquid Optical Clear Adhesive), etc.

[0021] The reflective coating is a mirror surface reflecting layer, for example, a cadmium layer, a silver layer, an aluminum layer, a silicon dioxide layer, a rhodium layer, etc.

[0022] The following is a preferred technical solution of the present application, but not as a limitation of the technical solutions provided by the present application, through the following preferred technical solutions, the technical purpose and beneficial effects of the present application can be better achieved and realized.

[0023] As a preferred technical solution of the present application, at least one side of the first transparent substrate facing the second transparent substrate is also curved towards the back surface of the rearview mirror lens at the position corresponding to the curved edge of the second transparent substrate and the electrochromic layer. That is, at least one same edge of the first transparent substrate, the second transparent substrate and the electrochromic layer is curved towards the back surface of the rearview mirror lens.

[0024] In the present solution, the second surface of the first transparent substrate is curved, or the first surface and the second surface of the first transparent substrate are both curved. By at least curving the second surface, the first transparent substrate, the electrochromic layer and the second transparent substrate are all curved and adhered, improving the structural reliability and stability of the rearview mirror.

[0025] In an embodiment, referring to Figure 3 , the first surface and the second surface of the first transparent substrate are both curved towards the back surface of the rearview mirror lens at the position corresponding to the curved edge of the second transparent substrate and the electrochromic layer, so that the first transparent substrate, the electrochromic layer and the second transparent substrate are sequentially stacked in the same shape.

[0026] In the present embodiment, the first surface and the second surface of the first transparent substrate are both curved towards the back surface of the rearview mirror lens at the curved edge of the second transparent substrate and the electrochromic layer, which can reduce the thickness of the first transparent substrate and thus reduce the cost.

[0027] Preferably, referring to Figure 11 , the radius of curvature of the side of the second transparent substrate facing away from the first transparent substrate is R1, and 2.5mm≤R1≤5mm.

[0028] Since the smaller the curvature radius of the first transparent substrate and the second transparent substrate is, the more difficult the 3D bonding is, and when the electrochromic layer is a flexible multilayer structure, the curvature radius is too small and the film layer is prone to separation and other problems, affecting the reliability of the device; but if the curvature radius of the first transparent substrate and the second transparent substrate is larger, the rearview mirror is thicker, which will affect the design of the rearview mirror structure. Therefore, in the embodiment, the curvature radius R1 of the second transparent substrate away from the first transparent substrate is limited to 2.5mm≤R1≤5mm, which can greatly reduce the difficulty of 3D bonding, while ensuring that the lens thickness N of the rearview mirror is appropriate.

[0029] It can be understood that when the first transparent substrate is a flat plate, the curvature radius of the second transparent substrate away from the first transparent substrate is also preferably R1, so that the bending difficulty is reduced and the device reliability is higher.

[0030] More preferably, referring to Figure 12 and Figure 13 , the projection length of the sealing portion on the plane of the second transparent substrate is M, and M≤3mm.

[0031] In order to reduce the lens thickness N of the rearview mirror, the bending length of the first transparent substrate, the electrochromic layer and the second transparent substrate can be shortened under the condition of the curvature radius R1. At this time, the projection length M of the sealing portion on the plane of the second transparent substrate will increase. Therefore, in order to ensure the anti-glare function of the rearview mirror, M should be within the range of ≤3mm.

[0032] In another embodiment, referring to Figure 4 , the side of the first transparent substrate facing the second transparent substrate is curved towards the back of the rearview mirror lens at a position corresponding to the curved edge of the second transparent substrate and the electrochromic layer, and the side of the first transparent substrate away from the second transparent substrate is a plane.

[0033] In the embodiment, the plane means the side that is not curved, that is, the first surface of the first transparent substrate is not curved, so that the manufacturing difficulty of the first transparent substrate in the embodiment is reduced, thereby reducing the production cost of the first transparent substrate and the manufacturing cost of the rearview mirror.

[0034] In yet another embodiment, the first transparent substrate is a flexible substrate, which can be flexible glass, PET film, PI film (polyimide), water and oxygen barrier film, flexible plastic plate, etc.

[0035] When the first transparent substrate and the second transparent substrate are both hard substrates, since the edges of the two substrates are curved, when the two substrates are closed, a hard-to-hard curved surface closing process is generally required. As known, the hard-to-hard closing process has high requirements for equipment, especially when curved surface closing is performed, the alignment accuracy of the two substrates is also quite high, and a slight deviation will cause the two substrates to not be well closed, thereby resulting in a very low product yield and difficult to improve production capacity. Therefore, in the embodiment, the first transparent substrate is set as a flexible substrate, so that the difficulty of curved surface closing with the second transparent substrate is greatly reduced, thereby greatly reducing the process difficulty of the rearview mirror of the embodiment, and the production capacity can be greatly improved.

[0036] Preferably, referring to Figure 6 , the first transparent substrate is provided with a buffer layer support.

[0037] It can be understood that the scheme that the first transparent substrate is a flexible substrate is not only applicable to the embodiment shown in Figure 6 , but also applicable to the embodiments shown in Figure 3 and Figure 4 , and any other embodiments. Since the first transparent substrate is a flexible substrate, when the rearview mirror lens formed thereby is installed and matched with a rearview mirror back plate or a shell structure, the back plate and the shell structure are easy to cause damage to the flexible back plate. Therefore, by setting a buffer layer, the installation stability of the flexible substrate can be ensured while avoiding damage caused by direct contact between the flexible substrate and the back plate or the shell structure.

[0038] Preferably, referring to Figure 7 , the edges of the first transparent substrate and the second transparent substrate curved toward the back surface of the rearview mirror lens each include a horizontal section and a curved section, and the sealing portion is arranged between the horizontal sections.

[0039] In the embodiment, the sealing portion is arranged between the horizontal sections, and at this time, the projection length of the sealing portion on the plane of the second transparent substrate can be further reduced, so that the width of the discoloration-free area is further reduced, and the proportion of the anti-dazzle area is further increased.

[0040] Preferably, referring to Figure 8 , the sealing portion is partially arranged between the horizontal sections and partially arranged between the curved sections.

[0041] Arranging the sealing portion partially in the horizontal sections and partially in the curved sections can reduce the overall thickness of the rearview mirror lens, and the projection length of the sealing portion on the plane of the second transparent substrate will not be too large.

[0042] It can be understood that the manner in which the sealing portion is arranged between the horizontal sections in the embodiment is not limited to Figure 7 and Figure 8The scheme shown is also applicable to the scheme in which the first surface of the first transparent substrate is a plane and the second surface forms a curved edge.

[0043] Preferably, referring to Figure 9 and Figure 14 , the sealing part is arranged at the edge side of the first transparent substrate and the second transparent substrate.

[0044] It should be noted that the edge side of the first transparent substrate and the second transparent substrate is relative to the first transparent substrate and the second transparent substrate, and the sealing part is arranged at the edge side of the first transparent substrate and the second transparent substrate as long as it is not arranged between the stacking positions of the first transparent substrate and the second transparent substrate.

[0045] Figure 9 The sealing part in the embodiment shown is filled into the preset position after the remaining components of the rearview mirror lens are completely assembled and installed in the housing of the rearview mirror. After the sealing part is solidified, the entire rearview mirror product is formed. At this time, the sealing part not only has a sealing effect on the electrochromic layer, but also strengthens the connection strength between the lens assembly and the rearview mirror housing, and improves the reliability of the rearview mirror product.

[0046] Since the effective sealing distance of the electrochromic layer is the shortest distance between the electrochromic layer and the external environment, in order to ensure the sealing strength, the thickness of the second transparent substrate in this embodiment should be > 2mm.

[0047] Figure 14 The sealing part in the embodiment shown does not directly contact the environment, and has better sealing performance.

[0048] It should be noted that the manner in which the sealing part is arranged at the edge side of the first transparent substrate and the second transparent substrate in this embodiment is also not limited to Figure 9 and Figure 14 the scheme in which the first surface of the first transparent substrate is a plane and the second surface forms a curved edge, and the scheme in which the first surface and the second surface of the first transparent substrate are both planes.

[0049] As another preferred technical solution of the present application, referring to Figure 5 , the first surface and the second surface of the first transparent substrate are both planes, and a filling layer is arranged between the electrochromic layer and the first transparent substrate.

[0050] In this scheme, the plane is relative to the curve, and the surface that is not curved is the meaning of the plane in this scheme, that is, the first transparent substrate is not curved, so that the process difficulty of the rearview mirror lens is reduced, and the cost is reduced.

[0051] Preferably, the filling layer comprises any one of PolyVinyl Butyral (PVB), Ethylene-vinyl Acetate Copolymer (EVA), OCA (Optically Clear Adhesive), SCA, Surper Safe Glas (SGP), Liquid Optical Clear Adhesive (LOCA).

[0052] Preferably, the electrochromic layer is a flexible electrochromic device.

[0053] Please refer to Figure 15 The electrochromic layer comprises, from bottom to top, a first substrate layer, a first conductive layer, a color-changing layer, a second conductive layer, and a second substrate layer. The first substrate layer is connected to the first transparent substrate, and the second substrate layer is connected to the second transparent substrate.

[0054] The color-changing layer comprises, from bottom to top, a color-changing material layer, an electrolyte layer, and a counter electrode layer. The color-changing material layer is adjacent to the first conductive layer or the second conductive layer. The materials of the layers in the electrochromic layer can be the materials disclosed in the prior art, which will not be described here.

[0055] The materials of the first conductive layer and the second conductive layer can be transparent conductive materials known to those skilled in the art, such as indium-tin oxide (ITO), aluminum zinc oxide (AZO), fluorine doped tin oxide (FTO), silver nanowire, graphene, carbon nanotube, metal mesh, or silver nanoparticles.

[0056] The first substrate layer and the second substrate layer are flexible optical-grade transparent materials, such as PET (Polyester Film), cyclic olefin copolymer, or cellulose triacetate.

[0057] The present application also provides an electrochromic element, comprising:

[0058] a first transparent substrate having opposite first and second surfaces;

[0059] a second transparent substrate stacked with the first transparent substrate to form a spacing space between the first and second transparent substrates;

[0060] a sealing portion configured to enclose a periphery of the interval space, so that the first transparent substrate, the second transparent substrate, and the sealing portion form a containing space;

[0061] an electrochromic layer disposed in the containing space;

[0062] The first transparent substrate is disposed on a back surface of the electrochromic element, the second transparent substrate is disposed on a front surface of the electrochromic element, and at least two opposite edges of the second transparent substrate and the electrochromic layer are bent towards the back surface of the electrochromic element to form curved edges, so as to reduce the projection length of the sealing portion on the plane of the second transparent substrate and increase the proportion of the effective electrochromic area of the electrochromic element.

[0063] The electrochromic element can be used to prepare a back cover of an electronic device, and the electrochromic element can change color, thereby improving the ornamental value of the electronic device.

[0064] Preferably, the two opposite edges of the second transparent substrate and the electrochromic layer are both bent towards the back surface of the electrochromic element to form curved edges.

[0065] It should be noted that all the improved schemes of the anti-dazzle rearview mirror lens are applicable to the further improvement of the electrochromic element, and since the electrochromic element adopts all the improved schemes of the anti-dazzle rearview mirror lens, it at least has all the beneficial effects brought by the improved schemes, which will not be repeated here.

[0066] The anti-dazzle rearview mirror lens provided in the present application is used to prepare an anti-dazzle rearview mirror, and the anti-dazzle rearview mirror lens is mounted in the housing of the anti-dazzle rearview mirror.

[0067] It should be noted that the housing constitutes the overall shape of the rearview mirror and plays a supporting role. The front surface of the rearview mirror is the lens, and the back surface of the rearview mirror is opposite to the lens. The inner side of the housing refers to the side facing the front surface of the rearview mirror, and the outer side of the housing is the back surface of the rearview mirror.

[0068] The first surface of the first transparent substrate facing the inner side of the housing can be attached to the inner side of the housing or separated from the inner side of the housing. The specific mounting mode is determined according to the structure of the anti-dazzle rearview mirror lens. For example, when the first transparent substrate is a flexible substrate, a buffer layer can be arranged between the first transparent substrate and the housing to play a supporting role.

[0069] The anti-dazzle rearview mirror of the present application has a reduced width of the non-color-changing area of the anti-dazzle rearview mirror lens used, an increased anti-dazzle area of the rearview mirror, improved safety, and improved visual experience of the user.

[0070] Optionally, the anti-dazzle rearview mirror can further comprise a decorative ring arranged on the side of the second transparent substrate opposite to the first transparent substrate to cover the sealing portion and the part of the electrochromic layer connected with the sealing portion.

[0071] Since the projection distance of the sealing portion of the anti-dazzle rearview mirror of the present application on the plane of the second transparent substrate is reduced, the projection distance of the decorative ring on the plane of the second transparent substrate is also reduced, and the setting of the decorative ring can improve the appearance consistency of the rearview mirror without affecting the anti-dazzle function of the rearview mirror.

[0072] The present application also provides an automobile comprising the anti-dazzle rearview mirror described above, which can be an interior rearview mirror or an exterior rearview mirror of the automobile.

[0073] The automobile using the anti-dazzle rearview mirror of the present application has better anti-dazzle function of the rearview mirror, and the driver or passenger will not be disturbed by strong light when the automobile is irradiated by strong light, thereby improving the driving safety.

[0074] Compared with the prior art, the present application has the following advantages:

[0075] The anti-dazzle rearview mirror provided by the present application bends at least the same side of the second transparent substrate and the electrochromic layer towards the back of the rearview mirror to form a curved side, so that the sealing portion for sealing the electrochromic layer arranged on the curved side is hidden in the side surface of the rearview mirror, the projection distance of the sealing portion on the plane of the second transparent substrate is reduced, thereby reducing the width of the non-colorable area when viewed from the front of the rearview mirror, increasing the anti-dazzle area of the rearview mirror, improving the safety, and improving the visual experience of the user. BRIEF DESCRIPTION OF DRAWINGS

[0076] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope of the present application.

[0077] Figure 1 The figure is a schematic structure diagram of the prior art rearview mirror;

[0078] Figure 2 The figure is a schematic structure diagram of the rearview mirror of embodiments 1 to 4 of the present application;

[0079] Figure 3 The figure is a schematic structure diagram of the rearview mirror of embodiments 5 to 6 of the present application;

[0080] Figure 4 The figure is a schematic structure diagram of the rearview mirror of embodiment 7 of the present application;

[0081] Figure 5 Structure diagram of a rearview mirror according to Embodiment 8 of the present application;

[0082] Figure 6 Structure diagram of a rearview mirror according to Embodiment 9 of the present application;

[0083] Figure 7 Structure diagram of a rearview mirror according to Embodiments 10 to 11 of the present application;

[0084] Figure 8 Structure diagram of a rearview mirror according to Embodiment 12 of the present application;

[0085] Figure 9 Structure diagram of a rearview mirror according to Embodiment 13 of the present application;

[0086] Figure 10 Structure diagram of a rearview mirror according to Embodiment 14 of the present application;

[0087] Figure 11 Structure diagram of a rearview mirror according to Embodiment 15 of the present application;

[0088] Figure 12 Structure diagram of a rearview mirror according to Embodiment 16 of the present application;

[0089] Figure 13 Structure diagram of a rearview mirror according to Embodiment 17 of the present application;

[0090] Figure 14 Structure diagram of a rearview mirror according to Embodiment 18 of the present application;

[0091] Figure 15 Structure diagram of an electrochromic layer according to the present application.

[0092] Reference numerals:

[0093] 10 - housing; 20 - first transparent substrate; 22 - reflective coating; 24 - buffer layer; 30 - second transparent substrate; 32 - decorative ring; 40 - sealing portion; 50 - electrochromic layer; 501 - first substrate layer; 502 - first conductive layer; 503 - color-changing layer; 504 - second conductive layer; 505 - second substrate layer; 52 - filling layer. DETAILED DESCRIPTION

[0094] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, for the purpose of explanation, and are not to be understood as limiting the present application.

[0095] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can be present. By way of illustration, it will be appreciated that for ease of discussion, the terms "vertical", "horizontal", "left", "right", and similar expressions are used herein for illustrative purposes only and do not limit the scope of the present application.

[0096] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0097] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0098] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the template herein is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0099] Example 1

[0100] A kind of anti-dazzle rearview mirror lens and the anti-dazzle rearview mirror prepared by it, for the rearview mirror in car, as shown in Figure 2 Including shell 10 and the lens of setting in shell 10, the lens includes the first transparent substrate 20, electrochromic layer 50 and second transparent substrate 30 arranged in layers, wherein the first transparent substrate 20 is arranged on shell 10, and reflective coating 22 is arranged on the side of the first transparent substrate 20 towards second transparent substrate 30. Wherein, electrochromic layer 50 is connected with the first transparent substrate 20 and the second transparent substrate 30 by polyvinyl butyral ester.

[0101] Wherein, please refer to Figure 15The electrochromic layer 50 comprises, from bottom to top, a first substrate layer 501, a first conductive layer 502, a color-changing layer 503, a second conductive layer 504, and a second substrate layer 505 which are sequentially stacked. The first substrate layer 501 is connected to the first transparent substrate 20, and the second substrate layer 505 is connected to the second transparent substrate 30.

[0102] The color-changing layer comprises, from bottom to top, a color-changing material layer, an electrolyte layer, and a counter electrode layer which are sequentially stacked. The color-changing material layer is adjacent to the first conductive layer.

[0103] The electrochromic layer 50 is sealed by the sealing portion 40 arranged between the first transparent substrate 20 and the second transparent substrate 30.

[0104] In the anti-dazzle rearview mirror of the embodiment, the first transparent substrate 20, the electrochromic layer 50, and the second transparent substrate 30 are all curved towards the back of the anti-dazzle rearview mirror to form curved edges, and the curved edges are one side of the lower edge portion of the rearview mirror.

[0105] The length of the sealing portion 40 of the anti-dazzle rearview mirror of embodiment 1 in the planar projection of the second transparent substrate 30 is less than 2.5 mm, which greatly reduces the blocking area caused by the sealing portion 40, increases the anti-dazzle area of the rearview mirror, improves the safety, and improves the visual experience of the user.

[0106] Embodiment 2

[0107] An anti-dazzle rearview mirror and a rearview mirror prepared therefrom, please refer to Figure 2 The difference between embodiment 1 and embodiment 2 is that the curved edges of the first transparent substrate 20, the electrochromic layer 50, and the second transparent substrate 30 are two side edges of the rearview mirror.

[0108] Embodiment 3

[0109] An anti-dazzle rearview mirror and a rearview mirror prepared therefrom, please refer to Figure 2 The difference between embodiment 1 and embodiment 3 is that the anti-dazzle rearview mirror of the embodiment is a left rearview mirror of a car, and the curved edges of the first transparent substrate 20, the electrochromic layer 50, and the second transparent substrate 30 are the upper edge portion and the lower edge portion of the left rearview mirror.

[0110] Embodiment 4

[0111] An anti-dazzle rearview mirror and a rearview mirror prepared therefrom, please refer to Figure 2 The difference between embodiment 1 and embodiment 4 is that the anti-dazzle rearview mirror of the embodiment is a right rearview mirror of a car.

[0112] Embodiment 5

[0113] A kind of anti-dazzle rearview mirror lens and the anti-dazzle rearview mirror prepared by it, please refer to Figure 3 The difference with example 1 is that the anti-dazzle rearview mirror of this example is additionally provided with a decorative ring 32 on the side of the second transparent substrate 30 facing the first transparent substrate 20, which is used to shield the sealing part 40. The projection length of the decorative ring 32 on the plane of the second transparent substrate 30 is less than 2.5 mm, the shielding area is greatly reduced, the anti-glare area is increased, the safety is improved, and the user's visual experience is improved.

[0114] Example 6

[0115] A kind of anti-dazzle rearview mirror lens and the anti-dazzle rearview mirror prepared by it, please refer to Figure 3 The difference with example 5 is that the first transparent substrate 20 of the anti-dazzle rearview mirror lens of this example is a flexible substrate, which greatly reduces the process difficulty and greatly improves the production capacity.

[0116] Example 7

[0117] A kind of anti-dazzle rearview mirror lens and the anti-dazzle rearview mirror prepared by it, please refer to Figure 4 The difference with example 1 is that the side of the first transparent substrate 20 of the anti-dazzle rearview mirror lens of this example provided on the shell 10 is a plane, so that the manufacturing process of the shell 10 and the first transparent substrate 20 is simpler, and the production cost is reduced.

[0118] Example 8

[0119] A kind of anti-dazzle rearview mirror lens and the anti-dazzle rearview mirror prepared by it, please refer to Figure 5 The difference with example 1 is that the first transparent substrate 20 of the anti-dazzle rearview mirror lens of this example is not bent, but is a flat glass plate, and a filling layer 52 is provided between the first transparent substrate 20 and the electrochromic layer 50 for fixing the electrochromic layer 50, and the filling layer 52 is ethylene-vinyl acetate copolymer.

[0120] Since the first transparent substrate 20 is a flat substrate, the process difficulty is greatly reduced, and the production capacity can be improved.

[0121] Example 9

[0122] A kind of anti-dazzle rearview mirror lens and the anti-dazzle rearview mirror prepared by it, please refer to Figure 6 The difference with example 6 is that the inside of the shell 10 of the anti-dazzle rearview mirror of this example is a plane, and a buffer layer 24 is additionally provided between the first transparent substrate 20 and the shell 10, and the buffer layer 24 is a buffer foam. Thus, the process difficulty can be reduced, the installation stability of the flexible substrate can be ensured, and at the same time, direct contact between the flexible substrate and the shell 10 structure is avoided to cause damage.

[0123] Example 10

[0124] A kind of anti-dazzle rearview mirror lens and the anti-dazzle rearview mirror prepared by it, please refer to Figure 7 The difference with example 5 is that the curved edge of the first transparent substrate 20 and the second transparent substrate 30 of the anti-dazzle rearview mirror lens of this example includes a curved section and a horizontal section, the horizontal section is substantially flush with the edge of the housing 10, and the sealing portion 40 is arranged between the horizontal section of the first transparent substrate 20 and the horizontal section of the second transparent substrate 30.

[0125] The anti-dazzle rearview mirror lens of this example can further reduce the projection distance of the sealing portion 40 in the plane of the second transparent substrate 30, thereby reducing the width of the colorless area. The colorless area of the anti-dazzle rearview mirror lens of this example is about 1mm, which is greatly reduced compared to the prior art.

[0126] Example 11

[0127] A kind of anti-dazzle rearview mirror lens and the anti-dazzle rearview mirror prepared by it, please refer to Figure 7 The difference with example 10 is that the anti-dazzle rearview mirror of this example does not have a decorative ring 32. Since the width of the colorless area is very small, the presence or absence of the decorative ring 32 has little effect on the performance of the product.

[0128] Example 12

[0129] A kind of anti-dazzle rearview mirror lens and the anti-dazzle rearview mirror prepared by it, please refer to Figure 8 The difference with example 10 is that the sealing portion 40 of the anti-dazzle rearview mirror lens of this example is partially arranged on the curved section of the first transparent substrate 20 and the second transparent substrate 30, and partially arranged on the horizontal section of the first transparent substrate 20 and the second transparent substrate 30. The colorless area of the anti-dazzle rearview mirror lens of this example is only slightly increased, but the overall length of the anti-dazzle rearview mirror lens can be reduced.

[0130] Example 13

[0131] A kind of anti-dazzle rearview mirror lens and the anti-dazzle rearview mirror prepared by it, please refer to Figure 9 The difference with example 5 is that the sealing portion 40 of the anti-dazzle rearview mirror lens of this example is arranged on the outer side of the first transparent substrate 20 and the second transparent substrate 30, instead of being arranged between the first transparent substrate 20 and the second transparent substrate 30. To ensure the sealing strength, the thickness of the second transparent substrate 30 is 5mm.

[0132] The sealing part 40 of the anti-dazzle rearview mirror of this embodiment is pasted inside the shell 10 after the first transparent substrate 20, the electrochromic layer 50 and the second transparent substrate 30 are bonded and adhered, and is filled into the preset position after the complete assembly is completed, and the sealing part 40 is solidified to form the entire anti-dazzle rearview mirror product. At this time, the sealing part 40 not only has a sealing effect on the electrochromic layer 50, but also strengthens the connection strength between the glass assembly and the shell 10.

[0133] Embodiment 14

[0134] An anti-dazzle rearview mirror and a rearview mirror prepared therefrom, please refer to Figure 10 The difference between this embodiment and embodiment 5 is that the reflective coating 22 of the anti-dazzle rearview mirror of this embodiment is arranged on the side of the first transparent substrate 20 away from the second transparent substrate 30.

[0135] Embodiment 15

[0136] An anti-dazzle rearview mirror and a rearview mirror prepared therefrom, please refer to Figure 11 The difference between this embodiment and embodiment 1 is that the curvature radius of the second transparent substrate 30 of the anti-dazzle rearview mirror of this embodiment is R1. Compared with embodiment 1, the curvature radius of the second transparent substrate 30 is R0. R1>R0, because the smaller the curvature radius of the second transparent substrate 30, the more difficult it is to adhere the 3D curved surface, and when the electrochromic layer is a flexible multilayer structure, the film layer separation and other problems are also prone to occur due to the too small curvature radius, thereby affecting the reliability of the device, so it is necessary to set a suitable curvature radius of the second transparent substrate 30.

[0137] Embodiment 16

[0138] An anti-dazzle rearview mirror and a rearview mirror prepared therefrom, please refer to Figure 12 The difference between this embodiment and embodiment 15 is that the first transparent substrate 20 and the second transparent substrate 30 of the anti-dazzle rearview mirror of this embodiment are shortened, and the sealing part 40 moves towards the electrochromic layer 50. At this time, although the projection length M of the sealing part 40 on the plane of the second transparent substrate 30 increases slightly, the 3D adhesion difficulty of the glass substrate is greatly reduced, and the overall thickness N of the rearview mirror is also reduced.

[0139] Embodiment 17

[0140] An anti-dazzle rearview mirror and a rearview mirror prepared therefrom, please refer to Figure 13The difference between this embodiment and embodiment 16 is that the first transparent substrate 20 and the second transparent substrate 30 of the anti-dazzle rearview mirror of this embodiment are further shortened, and the sealing portion 40 is further moved towards the electrochromic layer 50. Thus the overall thickness N of the rearview mirror can be further reduced, but the projection length M of the sealing portion 40 on the plane of the second transparent substrate 30 should be less than or equal to 3 mm.

[0141] Embodiment 18

[0142] An anti-dazzle rearview mirror and an anti-dazzle rearview mirror prepared therefrom, please refer to Figure 14 The difference between this embodiment and embodiment 13 is that the sealing portion 40 of the anti-dazzle rearview mirror of this embodiment is arranged between the second transparent substrate 30 and the housing 10, and compared with embodiment 13, the second transparent substrate 30 is extended to be connected with the housing 10, so that the sealing portion 40 will not be directly in contact with the environment, and the sealing effect can be enhanced.

[0143] Application Example 1

[0144] A car comprising a car body, the anti-dazzle rearview mirror of embodiment 1 arranged in the car body, the anti-dazzle rearview mirror of embodiment 3 arranged on the left front side of the car body, and the anti-dazzle rearview mirror of embodiment 4 arranged on the right front side of the car body.

[0145] Wherein the anti-dazzle rearview mirror is electrically connected with the car body through the electrode lines drawn from the first conductive layer and the second conductive layer of the electrochromic layer.

[0146] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0147] In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means to be within the scope of the present application and form different embodiments. For example, in the above claims, any one of the claimed embodiments can be used in any combination. The information disclosed in the background section is only intended to deepen the understanding of the overall background of the present application, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art.

Claims

1. An anti-glare rearview mirror lens, characterized in that, include: A first transparent substrate has opposing first and second surfaces; A reflective coating is disposed on the first surface or the second surface of the first transparent substrate; A second transparent substrate is stacked on top of the first transparent substrate to form a gap between the first transparent substrate and the second transparent substrate; A sealing portion is used to close the perimeter of the space, so that the first transparent substrate, the second transparent substrate, and the sealing portion form an accommodating space; An electrochromic layer is disposed within the accommodating space; Wherein, the side where the first transparent substrate is located is the back side of the rearview mirror lens, and the side where the second transparent substrate is located is the front side of the rearview mirror lens. At least one side of the second transparent substrate and the electrochromic layer is bent toward the back side of the rearview mirror lens to form a curved edge, so as to reduce the projection length of the sealing part on the plane of the second transparent substrate and increase the proportion of the anti-glare area of ​​the anti-glare rearview mirror lens.

2. The anti-glare rearview mirror lens according to claim 1, characterized in that, The second transparent substrate and the electrochromic layer are bent towards the back of the rearview mirror lens to form a curved edge.

3. The anti-glare rearview mirror lens according to claim 1, characterized in that, The radius of curvature of the side of the second transparent substrate facing away from the first transparent substrate is R1, and 2.5mm≤R1≤5mm.

4. The anti-glare rearview mirror lens according to claim 1, characterized in that, The projection length of the sealing part on the plane of the second transparent substrate is M, and M≤3mm.

5. The anti-glare rearview mirror lens according to claim 1, characterized in that, At least one side of the first transparent substrate facing the second transparent substrate is also bent toward the back of the rearview mirror lens at a position corresponding to the bent edge of the second transparent substrate and the electrochromic layer.

6. The anti-glare rearview mirror lens according to claim 5, characterized in that, The first and second surfaces of the first transparent substrate are both bent toward the back of the rearview mirror lens at the positions corresponding to the curved edges of the second transparent substrate and the electrochromic layer, so that the first transparent substrate, the electrochromic layer and the second transparent substrate are stacked in the same shape in sequence.

7. The anti-glare rearview mirror lens according to claim 5, characterized in that, The side of the first transparent substrate facing the second transparent substrate is bent toward the back of the rearview mirror lens at the position corresponding to the curved edge of the second transparent substrate and the electrochromic layer, and the side of the first transparent substrate facing away from the second transparent substrate is flat.

8. The anti-glare rearview mirror lens according to claim 5, characterized in that, The first transparent substrate is a flexible substrate.

9. The anti-glare rearview mirror lens according to claim 8, characterized in that, The first transparent substrate is provided with a buffer layer for support.

10. The anti-glare rearview mirror lens according to claim 5 or 6, characterized in that, The edges of both the first transparent substrate and the second transparent substrate that are bent toward the back of the rearview mirror lens include a horizontal segment and a curved segment, and the sealing part is disposed between the horizontal segments.

11. The anti-glare rearview mirror lens according to claim 5 or 6, characterized in that, The edges of both the first transparent substrate and the second transparent substrate that are bent toward the back of the rearview mirror lens include horizontal sections and curved sections. The sealing portion is partially disposed between the horizontal sections and partially disposed between the curved sections.

12. The anti-glare rearview mirror lens according to claim 1, characterized in that, The sealing portion is disposed on the side of the first transparent substrate and the second transparent substrate.

13. The anti-glare rearview mirror lens according to claim 1, characterized in that, Both the first and second surfaces of the first transparent substrate are planar, and a filler layer is disposed between the electrochromic layer and the first transparent substrate.

14. The anti-glare rearview mirror lens according to claim 13, characterized in that, The filler layer includes any one of polyvinyl butyral, ethylene-vinyl acetate copolymer, OCA optical adhesive, SCA optical adhesive, ionic intermediate film, and liquid optical adhesive LOCA.

15. The anti-glare rearview mirror lens according to claim 13, characterized in that, The electrochromic layer is a flexible electrochromic device.

16. The anti-glare rearview mirror lens according to claim 15, characterized in that, The electrochromic layer comprises a first substrate layer, a first conductive layer, a color-changing layer, a second conductive layer, and a second substrate layer, which are stacked sequentially from bottom to top. The first substrate layer is connected to the first transparent substrate, and the second substrate layer is connected to the second transparent substrate.

17. An electrochromic element, characterized in that, include: A first transparent substrate has opposing first and second surfaces; A second transparent substrate is stacked on top of the first transparent substrate to form a gap between the first transparent substrate and the second transparent substrate; A sealing portion is used to close the perimeter of the space, so that the first transparent substrate, the second transparent substrate, and the sealing portion form an accommodating space; An electrochromic layer is disposed within the accommodating space; Wherein, the side where the first transparent substrate is located is the back side of the electrochromic element, and the side where the second transparent substrate is located is the front side of the electrochromic element. At least one side of the second transparent substrate and the electrochromic layer is bent toward the back side of the electrochromic element to form a curved edge, so as to reduce the projection length of the sealing part on the plane of the second transparent substrate and increase the proportion of the effective color-changing area of ​​the electrochromic element.

18. The electrochromic element according to claim 17, characterized in that, The second transparent substrate and the electrochromic layer are bent towards the back of the electrochromic element on both sides to form curved edges.

19. An anti-glare rearview mirror, characterized in that, The device includes a housing and an anti-glare rearview mirror lens as described in any one of claims 1 to 16 disposed on the housing, wherein the first transparent substrate is mounted inside the housing.

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