CN211426993U

CN211426993U - Electrochromic element, electrochromic assembly, camera module and electronic equipment

Info

Publication number: CN211426993U
Application number: CN201922446909.0U
Authority: CN
Inventors: 彭明镇; 王晓安
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-04
Anticipated expiration: 2029-12-27

Abstract

The application mainly relates to an electrochromic element, an electrochromic assembly, a camera module and electronic equipment. The electrochromic material surrounds the light guide so that the light guide corresponds to the non-color-changing region of the electrochromic element, and the electrochromic material can form an annular color-changing region. Because the light guide part has light transmission performance, and the electrochromic material has reversible denaturation that the color becomes dark when being electrified and becomes transparent when being powered off, the size of the light transmission area of the electrochromic element can be changed by the cooperation of the electrochromic material and the light guide part, so that when the electrochromic element is used as the diaphragm of the camera, the actual size of the diaphragm of the camera can be changed to form the iris diaphragm, and the mechanical diaphragm in the related technology is replaced.

Description

Electrochromic element, electrochromic assembly, camera module and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to an electrochromic element, an electrochromic assembly, a camera module and electronic equipment.

Background

With the continuous popularization of electronic devices, electronic devices have become indispensable social and entertainment tools in people's daily life, and people have higher and higher requirements for electronic devices. Taking a mobile phone as an example, most of the diaphragms of the camera are mechanical diaphragms, a plurality of diaphragm blades are required to be matched with each other for use, and the size of the diaphragm is large.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an electrochromic element, wherein, electrochromic element includes relative first base plate and the second base plate that sets up, is provided with leaded light spare and electrochromic material between first base plate and the second base plate, and the leaded light spare is encircleed to electrochromic material.

The embodiment of the application further provides an electrochromic assembly, wherein the electrochromic assembly comprises a first electrochromic element and a second electrochromic element which are arranged in a stacked manner, the first electrochromic element and the second electrochromic element respectively comprise a first substrate and a second substrate which are arranged oppositely, a light guide part and an electrochromic material are arranged between the first substrate and the second substrate, and the electrochromic material surrounds the light guide part; the optical axes of the light guide parts of the first electrochromic element and the second electrochromic element are overlapped, and the projections of the light guide parts of the first electrochromic element and the second electrochromic element on the first substrate are not overlapped.

The embodiment of the application further provides a camera module, wherein the camera module comprises a lens component, a photosensitive chip and the electrochromic element, and the photosensitive chip and the electrochromic element are respectively arranged on two opposite sides of the lens component in the lighting direction.

The embodiment of the application further provides a camera module, wherein, the camera module includes arranges optical element and the sensitization chip that sets up along daylighting direction, and optical element includes lens and above-mentioned electrochromic element, and electrochromic element pastes and locates lens, and lens and electrochromic element's leaded light spare are aimed at the setting along the optical axis of lens.

The embodiment of the application further provides a camera module, wherein, the camera module includes arranges optical element and the sensitization chip that sets up along daylighting direction, and optical element includes front lens, rear lens and above-mentioned electrochromic element, and the optical axis of rear lens coincides with the optical axis of front lens, and electrochromic element is connected with at least one of front lens, rear lens, and the leaded light spare of front lens, rear lens and electrochromic element aligns the setting along the optical axis of front lens.

The embodiment of the application further provides electronic equipment, wherein, electronic equipment includes casing assembly and the camera module that sets up relatively with casing assembly, and casing assembly includes casing and above-mentioned electrochromic component, and the casing is provided with the printing opacity district, and the printing opacity district is located in electrochromic component subsides for the camera module can gather ambient light via printing opacity district and electrochromic component.

The embodiment of the application further provides an electronic device, wherein, the electronic device includes casing assembly and the camera module that sets up relatively with casing assembly, and casing assembly includes casing, protection lens and above-mentioned electrochromic element, and the mounting hole has been seted up to the casing, and the protection lens sets up in the mounting hole, and electrochromic element pastes and locates the protection lens for the camera module can gather the ambient light via protection lens and electrochromic element.

The embodiment of the application also provides electronic equipment, wherein, electronic equipment includes casing and above-mentioned camera module, and the casing is provided with the printing opacity district, and the camera subassembly is via printing opacity district collection ambient light.

The embodiment of the application further provides electronic equipment, wherein, electronic equipment includes casing, protection lens and above-mentioned camera module, and the mounting hole has been seted up to the casing, and the protection lens sets up in the mounting hole, and camera subassembly gathers ambient light via the protection lens.

The beneficial effect of this application is: the electrochromic element comprises a first substrate and a second substrate which are oppositely arranged, and a light guide part and an electrochromic material are arranged between the first substrate and the second substrate. The electrochromic material surrounds the light guide so that the light guide corresponds to the non-color-changing region of the electrochromic element, and the electrochromic material can form an annular color-changing region. Because the light guide piece has light transmission performance, and the electrochromic material has reversible denaturation that the electricity is electrified to change into dark color and the electricity is cut off to change into transparency, the electrochromic material and the light guide piece are mutually matched to change the size of the light transmission area of the electrochromic element.

Further, when the electrochromic element is used as a diaphragm of a camera, since the size of the light-transmitting area of the electrochromic element is variable, the actual size of the diaphragm of the camera may be varied to form an iris diaphragm, thereby replacing the mechanical diaphragm in the related art.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of an electrochromic device provided herein;

FIG. 2 is a schematic top view of the first substrate of FIG. 1 near the second substrate;

FIG. 3 is a schematic structural diagram of another embodiment of the electrochromic element of FIG. 1;

FIG. 4 is a schematic structural diagram of another embodiment of an electrochromic element provided herein;

FIG. 5 is a schematic structural diagram of another embodiment of the electrochromic element of FIG. 4;

FIG. 6 is a schematic structural diagram of yet another embodiment of an electrochromic element as provided herein;

FIG. 7 is a schematic structural diagram of one embodiment of an electrochromic assembly provided herein;

fig. 8 is a schematic structural diagram of an embodiment of a camera module provided in the present application;

fig. 9 is a schematic structural diagram of another embodiment of a camera module provided in the present application;

fig. 10 is an exploded schematic view of a camera module according to another embodiment of the present disclosure;

FIG. 11 is an exploded view of an embodiment of an electronic device provided herein;

FIG. 12 is an exploded schematic view of another embodiment of an electronic device provided herein;

FIG. 13 is a schematic flow chart diagram illustrating one embodiment of a method for fabricating an electrochromic device according to the present disclosure;

FIG. 14 is a schematic view of a structure in which an antireflection film is formed over a first substrate;

FIG. 15 is a schematic view of a first conductive layer formed over the anti-reflective film of FIG. 14;

FIG. 16 is a schematic diagram of the structure of the first assembly panel of FIG. 15 with light guides formed thereon;

FIG. 17 is a schematic view of the structure for forming a seal on the first assembly plate of FIG. 16;

FIG. 18 is a schematic structural view of an annular space formed by the sealing member, the light guide member and the first assembling plate in FIG. 17;

FIG. 19 is a schematic flow chart diagram illustrating another embodiment of a method for making an electrochromic device according to the present disclosure;

FIG. 20 is a schematic diagram of a structure in which a filling member is formed on the first substrate and a first insulating layer is formed on the first conductive layer in FIG. 15;

FIG. 21 is a schematic diagram of a structure of the filling member and the first insulating layer coated with an ITO conductive layer in FIG. 20;

FIG. 22 is a schematic view of the first assembly panel of FIG. 21 with light guides and spacers formed thereon;

FIG. 23 is a schematic view of the structure for forming a seal on the first assembled plate of FIG. 22;

FIG. 24 is an annular space formed by the sealing member, the light guide member and the first assembly plate of FIG. 23.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic structural diagram of an embodiment of an electrochromic device provided in the present application, and fig. 2 is a schematic top-view structural diagram of a side of a first substrate close to a second substrate in fig. 1.

The electrochromic device 10 includes a first substrate 100, a second substrate 200, a light guide 300, and an electrochromic material 400, as shown in fig. 1. The first substrate 100 and the second substrate 200 are disposed opposite to each other, and the light guide 300 and the electrochromic material 400 are disposed between the first substrate 100 and the second substrate 200. Further, electrochromic material 400 surrounds light guide 300 such that light guide 300 corresponds to the non-color changing region Q0 of electrochromic element 10, while electrochromic material 400 is capable of forming a color changing region Q1 in the shape of a ring, as shown in fig. 1. Because the light guide 300 has light transmission performance, and the electrochromic material 400 has reversible denaturation that is changed into dark color when being powered on and transparent when being powered off, the size of the light transmission area of the electrochromic element 10 can be changed by the cooperation of the electrochromic material 400 and the light guide 300, so that when the electrochromic element 10 is used as a diaphragm of a camera, the actual size of the diaphragm can be changed to form a variable diaphragm, thereby replacing a mechanical diaphragm in the related art.

The parameters such as the shape and size of the non-discolored region Q0 and the discolored region Q1 may be appropriately designed according to the actual use requirements of the electrochromic element 10. For a camera, the electrochromic element 10 may function as a variable aperture, the non-color-changing region Q0 may be circular, and the color-changing region Q1 may be circular. Wherein, the ring width of the color-changing region Q1 can be very small, such as 10um, 20um, 100um or 500um, etc.

For example, when the electrochromic device 10 is powered on, the electrochromic material 400 turns dark to block light, so that the light guide 300 in the electrochromic device 10 transmits light, that is, the light guide 300 is used as a light transmission area of the electrochromic device 10, and in this case, the light guide can correspond to a small aperture of a camera (the aperture size can be Q0). When the electrochromic element 10 is powered off, the electrochromic material 400 becomes transparent and can transmit light, so that the light guide 300 and the electrochromic material 400 in the electrochromic element 10 conduct light together, that is, the light guide 300 and the electrochromic material 400 together serve as a light transmission area of the electrochromic element 10, and at this time, the light guide can correspond to a large aperture of a camera (the aperture size can be Q0+ Q1). With the camera, a two-stage iris diaphragm can be formed.

A first conductive layer 101 is disposed on a side of the first substrate 100 close to the second substrate 200, as shown in fig. 2; a second conductive layer 201 is disposed on a side of the second substrate 200 close to the first substrate 100, similar to the structure shown in fig. 2. The first conductive layer 101 and the second conductive layer 201 are electrically connected to the electrochromic material 400, as shown in fig. 1, so that an external electric field can be formed on two opposite sides of the electrochromic material 400, and the electrochromic element 10 can change color. The first conductive layer 101 and the second conductive layer 201 may be annularly disposed, such as in a ring shape shown in fig. 1 to 2, and are mainly the same as or similar to the electrochromic material 400 in shape, so that the voltages applied to two opposite sides of the electrochromic material 400 may be surface voltages, thereby increasing the rate and uniformity of color change of the electrochromic material 400. Of course, the first conductive layer 101 and the second conductive layer 201 may be linear, as long as one applied electric field can be formed on both opposite sides of the electrochromic material 400.

The first conductive layer 101 and the second conductive layer 201 may be made of a transparent conductive material such as Indium Tin Oxide (ITO), zinc aluminum oxide (AZO), or graphene. The first conductive layer 101 and the second conductive layer 102 may be formed on the first substrate 100 and the second substrate 200 by Physical Vapor Deposition (PVD), respectively. Further, the thicknesses of the first conductive layer 101 and the second conductive layer 201 may be in the range of 100nm to 300nm, specifically 100nm, 120nm, 150nm, 200nm, 280nm, 300nm, and the like. The parameters of the conductive layers such as material, thickness, and shape can also be applied to the third conductive layer, the fourth conductive layer, and the nth conductive layer in the following embodiments.

It should be noted that the terms "first", "second", "third", fourth "and the like in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first," "second," "third," and "fourth," etc., may explicitly or implicitly include at least one such feature.

In some embodiments, the first substrate 100 and the second substrate 200 may be rigid substrates such as glass.

The light guide 300 may be made of one of optical glue, photoresist, photo-curing glue, or other optical resin with light transmittance. For example, the light guide 300 may be formed on the first substrate 100 by optical glue through a dispensing method, and then the light guide 300 is bonded to the second substrate 200. For example, the light guide 300 may be formed on the first substrate 100 by a photoresist, and then the light guide 300 and the second substrate 200 are bonded. For another example, the light guide 300 may be formed on the first substrate 100 by light curing glue, and then the light guide 300 is bonded to the second substrate 200.

The material of the light guide 300 may be glass. Specifically, the material of the first substrate 100 and the second substrate 200 may be the same as the material of the light guide 300. For example, the light guide 300 may be made of glass material, and then the light guide 300 may be bonded or welded to the first substrate 100 and the second substrate 200. For example, an annular channel may be formed on the first substrate 100 or the second substrate 200 by etching, so as to indirectly form the light guide 300, such that the light guide 300 and the first substrate 100 or the second substrate 200 are integrated into a whole, as shown in fig. 3; then, the light guide 300 is bonded or welded to the second substrate 200 or the first substrate 100.

Further, the light guide 300 may be in a cylindrical shape, and the cross section thereof may be in a regular shape such as a circle, a triangle, a rectangle, a pentagon, a hexagon, an octagon, or an irregular shape such as a cartoon pattern. In the embodiment of the present application, the light guide 300 is described as being cylindrical.

In other embodiments, the first substrate 100 and the second substrate 200 may be flexible substrates such as Polyimide (PI), Colorless Polyimide (CPI), and the like.

Accordingly, the material of the light guide 300 may be one of optical glue, photoresist, photo-curing glue and glass. Of course, other light-transmitting substances may be used. The light guide 300 may be bonded to the first substrate 100 and the second substrate 200.

The electrochromic material 400 may be an organic polymer (including polyaniline, polythiophene, etc.), an inorganic material (prussian blue, transition metal oxide, such as tungsten trioxide), an organic small molecule (such as viologen), and the like. When the electrochromic material 400 is an organic polymer or an inorganic material, it may include a color-changing layer, an ion conducting layer, an ion storage layer, etc., and details of these technical features are within the understanding of those skilled in the art and will not be described in detail herein. Further, when the electrochromic material 400 is an organic small molecule, it can be formed by a vacuum filling process, and the detailed technical features of this part are within the understanding of those skilled in the art and will not be described in detail herein.

Referring again to fig. 1, electrochromic device 10 also includes a seal 500, where seal 500 surrounds light guide 300. In one aspect, the sealing member 500 may form an annular region with the light guide 300, and the electrochromic material 400 is filled in the annular region, so that the electrochromic material 400 can have a fixed shape. On the other hand, the sealing member 500 may also seal the electrochromic material 400 together with the first and

second substrates

100 and 200 to prevent the electrochromic material 400 from being corroded by water, oxygen, or the like, thereby increasing the reliability of the electrochromic device 10. Further, the first conductive layer 101 and the second conductive layer 201 can sandwich the sealing member 500 (i.e., sandwich structure) to satisfy the conductive requirement and the sealing requirement of the electrochromic material 400.

Further, the shape of the sealing element 500 may be a ring, and the cross section of the inner ring thereof may be a regular shape such as a circle, a triangle, a rectangle, a pentagon, a hexagon, an octagon, etc., or may be other irregular shapes. In the embodiment of the present application, the sealing member 500 is described as being annular.

It should be noted that, since the sealing member 500 and the light guide 300 can form an annular region for accommodating the electrochromic material 400, the electrochromic material 400 can also be annularly disposed therewith. For example: when the light guide 300 has a cylindrical shape and the seal 500 has a circular ring shape, the electrochromic material 400 is provided in a circular ring shape. At this time, the inner diameter of the electrochromic material 400 may be equal to the diameter of the light guide 300, and the outer diameter of the electrochromic material 400 may be equal to the inner diameter of the sealing member 500.

In some embodiments, the seal 500 may be a plastic frame. Accordingly, the plastic frame may be glued to the first conductive layer 101 and the second conductive layer 201. The plastic frame may be further bonded to the first substrate 100 and the second substrate 200, and at this time, the first conductive layer 101 and the second conductive layer 201 need to partially penetrate through the contact surfaces between the first substrate 100 and the sealing member 500, so as to form an external electric field on two opposite sides of the electrochromic material 400.

In other embodiments, the seal 500 may also be a glass frame. Accordingly, the glass frame may be welded or bonded to the first substrate 100 and the second substrate 200, and at this time, the first conductive layer 101 and the second conductive layer 201 are required to partially penetrate through the contact surfaces between the first substrate 100 and the sealing member 500, so as to form an external electric field on two opposite sides of the electrochromic material 400. The glass frame may be further bonded to the first conductive layer 101 and the second conductive layer 201.

The inventors of the present application have found, through long-term research: different media have different transmittances to light, and when the light propagates in the two media, reflection of different degrees occurs due to different refractive indexes (satisfying the fresnel formula), so that the transmittance of the electrochromic element 10 to the light is affected. For a camera, the amount of incoming light affects the imaging quality of the camera. If the electrochromic element 10 is used as a variable aperture of a camera, it is necessary to consider the influence of the transmittance of the electrochromic element 10 to light on the amount of light entering the camera. To this end, at least one side of the electrochromic element 10 is further provided with an antireflection film 600. The Anti-reflection coating (AR) mainly uses the principle of light interference, that is, light reflected by two opposite surfaces of the AR coating interferes, and is a surface optical coating which is arranged on the surface of a medium and can reduce the reflected light on the surface of the medium, thereby increasing the transmittance of the medium to the light. Therefore, the antireflection film 600 is mainly used to increase the transmittance of the electrochromic element 10 to light.

For example, antireflection film 600 is provided on at least one of the opposite surfaces of first substrate 100 and/or the opposite surfaces of second substrate 200. In the embodiment of the present application, antireflection films 600 are disposed on the opposite sides of the first substrate 100 and the opposite sides of the second substrate 200, as shown in fig. 1, so as to increase the transmittance of the electrochromic device 10 to light. The antireflection film 600 between the first conductive layer 101 and the first substrate 100 and between the second conductive layer 201 and the second substrate 200 can also reduce the influence of the refractive index difference between different media on the light transmittance, thereby further increasing the light transmittance of the electrochromic element 10.

Referring to fig. 4, fig. 4 is a schematic structural diagram of another embodiment of the electrochromic device provided in the present application.

The electrochromic element 10 further includes a Spacer (PS) 700, the Spacer 700 surrounding the light guide 300 and separating the electrochromic material 400 into a first sub-electrochromic material 401 and a second sub-electrochromic material 402. In this case, the spacer 700 is formed in a ring shape. The first sub electrochromic material 401 is close to the light guide 300, and the second sub electrochromic material 402 is far from the light guide 300, that is, the second sub electrochromic material 402 surrounds the first sub electrochromic material 401, so that the light guide 300 corresponds to the non-color-changing region Q0 of the electrochromic element 10, the first sub electrochromic material 401 can form an annular first sub color-changing region Q11, and the second sub electrochromic material 402 can form an annular second sub color-changing region Q12, as shown in fig. 4. With such an arrangement, on one hand, problems such as migration and diffusion between the first sub electrochromic material 401 and the second sub electrochromic material 402 can be prevented, and on the other hand, power on or power off of the first sub electrochromic material 401 and the second sub electrochromic material 402 can be independently controlled.

In the embodiment of the present application, the composition of the first sub electrochromic material 401 may be the same as or different from that of the second sub electrochromic material 402.

In some embodiments, the material of the spacer 700 is the same as the material of the light guide 300, so that the two can be formed in one process, thereby simplifying the manufacturing process of the electrochromic device 10. For the material of the light guide 300, reference may be made to the related description of the above embodiments, which is not repeated herein. Therefore, the material of the spacer 700 may be one of optical glue, photoresist, photo-curing glue and glass. Further, if the first substrate 100 and the second substrate 200 are made of glass and the light guide 300 is also made of glass, an annular channel may be formed on the first substrate 100 or the second substrate 200 by etching, so as to indirectly form the light guide 300, such that the light guide 300 and the first substrate 100 or the second substrate 200 are integrated; then, the light guide 300 is bonded or welded to the second substrate 200 or the first substrate 100.

It should be noted that, in the case that the spacer 700 is capable of separating the first sub-electrochromic material 401 and the second sub-electrochromic material 402, the ring width of the spacer 700 (that is, the thickness dimension in the radial direction of the light guide 300) should be as small as possible, so as to avoid the phenomenon that the light leaks due to the fact that the spacer 700 between the first sub-electrochromic material 401 and the second sub-electrochromic material 402 turns dark to block light, thereby increasing the reliability of the electrochromic device 10. The inventors of the present application have found, through long-term research: when the height/thickness ratio of the spacer 700 is in the range of 4/1-8/1, the preferable height/thickness ratio may be 5/1, and the spacer 700 can not only perform the function of isolation, but also avoid the light leakage phenomenon, and has good structural strength. For example, the height of the spacer 700 is 70 μm, and the thickness thereof may be 10-15 μm.

Based on the above detailed description, the second sub-electrochromic material 402 surrounds the first sub-electrochromic material 401, that is, the first sub-electrochromic material 401 is located at the inner circle, and the second sub-electrochromic material 402 is located at the outer circle. In order to control the power on or off of the first sub electrochromic material 401 and the second sub electrochromic material 402 separately, two separate sets of conducting circuit lines need to be laid. Further, since the first sub electrochromic material 401 is located in the inner ring, the conductive circuit of the first sub electrochromic material 401 will tend to cross the area where the second sub electrochromic material 402 is located, so that the conductive circuit of the first sub electrochromic material 401 needs to be insulated from the second sub electrochromic material 402. For this reason, the present embodiment redesigns the conductive circuit of the electrochromic device 10, specifically as follows:

in some embodiments, as shown in fig. 4, a first conductive layer 101 and a third conductive layer 103 are disposed on a side of the first substrate 100 close to the second substrate 200, and the first conductive layer 101 and the third conductive layer 103 are separated by a first insulating layer 102 to achieve electrical insulation therebetween. At this time, the first conductive layer 101, the first insulating layer 102, and the third conductive layer 103 are stacked on the first substrate 100. The first conductive layer 101, the first insulating layer 102, and the third conductive layer 103 may be disposed in a ring shape. Further, the axis of the through hole of the first conductive layer 101 coincides with the axis of the through hole of the third conductive layer 103, and the diameter of the through hole of the third conductive layer 103 is larger than the diameter of the first conductive layer 101.

Correspondingly, a second conductive layer 201 and a fourth conductive layer 203 are disposed on a side of the second substrate 200 close to the first substrate 100, and the second conductive layer 201 and the fourth conductive layer 203 are separated by a second insulating layer 202 to achieve electrical insulation therebetween. At this time, the second conductive layer 201, the second insulating layer 202, and the fourth conductive layer 203 are stacked on the second substrate 200. The second conductive layer 201, the second insulating layer 202, and the fourth conductive layer 203 may be disposed in a ring shape. Further, the axis of the through hole of the second conductive layer 201 coincides with the axis of the through hole of the fourth conductive layer 203, and the diameter of the through hole of the fourth conductive layer 203 is larger than the diameter of the second conductive layer 201.

The material of the first insulating layer 102 and the second insulating layer 202 may be optical resin, silicon oxide, or the like. The first insulating layer 102 and the second insulating layer 202 can be formed on the first conductive layer 101 and the second conductive layer 201 by physical vapor deposition, respectively. Further, the thicknesses of the first insulating layer 102 and the second insulating layer 202 may be in the range of 100nm to 300nm, and specifically, may be 100nm, 120nm, 150nm, 200nm, 280nm, 300nm, and the like.

In some other embodiments, as shown in fig. 5, a first conductive layer 101 and a third conductive layer 103 are disposed on a side of the first substrate 100 close to the second substrate 200, and may be electrically insulated from each other by the first insulating layer 102. Correspondingly, a second conductive layer 201 and a fourth conductive layer 203 are disposed on a side of the second substrate 200 close to the first substrate 100, and the second conductive layer 202 can also electrically insulate the second substrate from the fourth conductive layer. The main differences from the above embodiments are: in this embodiment, a filling member 900 is further disposed between the first substrate 100, the light guide member 300 and the first conductive layer 101, and the filling member 900 is mainly used for cooperating with the first insulating layer 102, so that the first conductive layer 101 is bent at a position corresponding to the spacer 700, as shown in the "Z" shaped cross-sectional structure in fig. 5, thereby preventing the first conductive layer 101 from being short-circuited with the third conductive layer 103 when being led out from inside to outside. Correspondingly, a filling member 900 is also disposed between the second substrate 200 and the light guide member 300 and the second conductive layer 201, and the filling member 900 is mainly used for cooperating with the second insulating layer 202, so that the second conductive layer 201 is bent at a position corresponding to the spacer 700, as shown in the "Z" shaped cross-sectional structure of fig. 5, thereby preventing the second conductive layer 201 from being short-circuited with the fourth conductive layer 203 when being led out from inside to outside. The material of the filling member 900 may be the same as that of the light guide member 300, the first substrate 100 and/or the second substrate 200, or the spacer 700. With such an arrangement, the electrochromic material 400 can be uniform in size in the thickness of the electrochromic element 10, so that the color change consistency of the first sub-electrochromic material 401 and the second sub-electrochromic material 402 is increased; it is also possible to enable spacers 700 to be interposed between the first conductive layer 101 and the third conductive layer 103 and between the second conductive layer 201 and the fourth conductive layer 203 (as shown in fig. 5), thereby increasing the reliability of the spacers 700.

Based on the conductive lines, the first conductive layer 101 and the second conductive layer 201 are electrically connected to the first sub-electrochromic material 401, so that an external electric field can be formed on two opposite sides of the first sub-electrochromic material 401, and the first sub-electrochromic material 401 can change color. The third conductive layer 103 and the fourth conductive layer 203 are electrically connected to the second sub-electrochromic material 402, so that an external electric field can be formed on two opposite sides of the second sub-electrochromic material 402, and the second sub-electrochromic material 402 can change color. Further, the first conductive layer 101 and the third conductive layer 103 are separated by the first insulating layer 102 to achieve electrical insulation therebetween, and the second conductive layer 201 and the fourth conductive layer 203 are separated by the second insulating layer 202 to achieve electrical insulation therebetween, so that the conductive line of the first sub-electrochromic material 401 is insulated from the second sub-electrochromic material 402, and thus the power on or off of the first sub-electrochromic material 401 and the second sub-electrochromic material 402 can be individually controlled.

For example, when the electrochromic element 10 is powered on, the first conductive layer 101 and the second conductive layer 201 can be independently controlled to be powered on, and the third conductive layer 103 and the fourth conductive layer 203 are also powered on, so that both the first sub-color-changing material 401 and the second sub-color-changing material 402 are darkened to block light, so that the light guide 300 in the electrochromic element 10 conducts light, that is, the light guide 300 is used as a light transmission area of the electrochromic element 10, and at this time, the light guide can correspond to a small aperture of a camera (the aperture size can be Q0). When the electrochromic element 10 is powered off, the first conductive layer 101 and the second conductive layer 201 can be independently controlled to be powered off, and the third conductive layer 103 and the fourth conductive layer 203 are also powered off, so that the first sub electrochromic material 401 and the second sub electrochromic material 402 are not discolored to transmit light, and the light guide 300, the first sub electrochromic material 401 and the second sub electrochromic material 402 in the electrochromic element 10 commonly conduct light, that is, the light guide 300, the first sub electrochromic material 401 and the second sub electrochromic material 402 commonly serve as a light transmission region of the electrochromic element 10, and at this time, the light guide may correspond to a large aperture of a camera (the aperture may be Q0+ Q11+ Q12). Furthermore, the first conductive layer 101 and the second conductive layer 201 can be controlled to be powered off individually, and the third conductive layer 103 and the fourth conductive layer 203 are conducted, so that the first sub-electrochromic material 401 does not change color, and the second sub-electrochromic material 402 changes color into dark, so that the light guide 300 and the first sub-electrochromic material 401 in the electrochromic element 10 conduct light together, that is, the light guide 300 and the first sub-electrochromic material 401 together serve as a light transmission area of the electrochromic element 10, and at this time, the light guide may correspond to a middle aperture of a camera (the aperture size may be Q0+ Q11). With the camera, the three-stage iris diaphragm can be formed by the arrangement.

It should be noted that, based on the technical solution of this embodiment, N (N is a positive integer) spacers 700 sequentially surrounding the light guide 300 may be disposed, and the diameters of the N spacers 700 gradually increase in the direction away from the light guide 300, so as to partition the electrochromic material 400 into (N +1) electrochromic regions, so that the electrochromic element 10 may have (N +1) electrochromic regions. With the camera, so arranged, a multi-stage variable aperture having (N +2) stages can be formed.

Further, other structures of the electrochromic element in this embodiment are the same as or similar to those of the above embodiments, and are not described again here.

Referring to fig. 6, fig. 7 is a schematic structural diagram of another embodiment of the electrochromic device provided in the present application.

The inventors of the present application have also found, through long-term studies: in the process of bonding the first substrate 100 and the second substrate 200, due to the influence of factors such as manufacturing accuracy and docking accuracy, the first conductive layer 101 and the second conductive layer 201 may be misaligned, that is, the projections of the first conductive layer 101 and the second conductive layer 201 are not completely overlapped. After the electrochromic element 10 is electrified for a long time, the phenomenon that the electrochromic material 400 is gathered easily occurs at the position of the dislocation; after the electrochromic device 10 is powered off, the above-mentioned dislocated position is prone to have "ghost" or "ghost" phenomena. In other words, the electrochromic element 10 may exhibit non-uniformity during the color change process, particularly, in the edge region of the electrochromic material 400. For this, at least one side of the electrochromic device 10 is provided with a light-shielding member 800, and the light-shielding member 800 is mainly used to shield "ghost" or "ghost" that may occur in the edge region of the electrochromic material 400. In this embodiment, the light shielding member 800 is disposed on two opposite sides of the electrochromic device 10, as shown in fig. 6.

The light shielding member 800 may be a black ink layer applied to the electrochromic device 10, or may be a black tape attached to the electrochromic device 10. The light shielding member 800 has a light hole 801, and the light hole 801 is opposite to the light guiding member 300. Further, the projection of the light guide 300 on the light shielding member 800 is located in the light hole 801, so as to prevent the light shielding member 800 from affecting the normal use of the electrochromic device 10.

Based on the above detailed description, since the light guide 300 can be disposed in a cylindrical shape, the electrochromic material 400 can be disposed in a ring shape, so that the light hole 801 can be disposed coaxially with the light guide 300. Further, the aperture of the light hole 801 is larger than the diameter of the light guide 300, and the aperture of the light hole 801 is smaller than or equal to the outer diameter of the electrochromic material 400, so that the light shielding member 800 can shield the edge area of the electrochromic material 400, and the normal use of the electrochromic element 10 is not affected, thereby increasing the reliability of the electrochromic element 10.

Since the electrochromic element 10 is provided with the light shielding member 800, the size of the aperture formed by the element is affected to some extent.

For example, when the electrochromic element 10 is powered on, the electrochromic material 400 turns dark, which can block light, so that the light guide 300 in the electrochromic element 10 transmits light. Since the aperture of the light hole 801 is larger than the diameter of the light guide 300, the light shielding member 800 has less influence on the size of the light ring, and the light guide 300 as the light transmission region of the electrochromic device 10 may correspond to a small light ring (the size of the light ring may be Q0) of the camera. When the electrochromic element 10 is powered off, the electrochromic material 400 becomes transparent and can transmit light, so that the light guide 300 and the electrochromic material 400 in the electrochromic element 10 can conduct light together. Since the aperture of the light hole 801 is between the diameter of the light guide 300 and the outer diameter of the electrochromic material 400, the light shielding member 800 has a large influence on the size of the light ring, and the light hole 801 is used as a light transmission area of the electrochromic device 10, and at this time, may correspond to a large light ring of the camera (the size of the light ring may be Q0+ Q2, that is, the aperture of the light hole 801). With the camera, not only can the two-stage iris diaphragm be formed, but also the imaging effect of the camera can be increased.

Referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of an electrochromic device provided in the present application.

The electrochromic assembly 1000 includes a first electrochromic element 1001 and a second electrochromic element 1002, which are stacked, and the structures of the first electrochromic element 1001 and the second electrochromic element 1002 may be the same as or similar to those of the electrochromic element 10 described in any of the above embodiments, and are not described herein again.

For example: the first electrochromic element 1001 and the second electrochromic element 1002 both include a first substrate 100 and a second substrate 200 that are disposed opposite to each other, a light guide 300 and an electrochromic material 400 are disposed between the first substrate 100 and the second substrate 200, and the electrochromic material 400 surrounds the light guide 300, as shown in fig. 7 and fig. 1. Since the first electrochromic element 1001 and the second electrochromic element 1002 may be in a stacked structure as shown in fig. 7, the second substrate 200 of the first electrochromic element 1001 and the first substrate 100 of the second electrochromic element 1002 may be an integrally formed structural member, that is, the first electrochromic element 1001 and the second electrochromic element 1002 may share one substrate, so as to reduce the size of the electrochromic assembly 1000 in the thickness direction, and facilitate the thinning of the electrochromic assembly 1000.

In this embodiment, the optical axes of the light guide members 300 of the first and second electrochromic elements may be overlapped, and the projections of the light guide members 300 of the first and second electrochromic elements on the first substrate may not be overlapped, so as to increase the application range of the electrochromic assembly 1000.

For example: the light guide members 300 of the first and second electrochromic elements may be arranged in a column shape, and the electrochromic materials 400 of the first and second electrochromic elements may be arranged in a ring shape; the diameter of the light guide 300 of the first electrochromic element 1001 is larger than the diameter of the light guide 300 of the second electrochromic element 1002, and the outer diameter of the electrochromic material 400 of the second electrochromic element 1002 is larger than the diameter of the light guide 300 of the first electrochromic element 1001. Preferably, as shown in fig. 7, the outer diameter of the electrochromic material 400 of the second electrochromic element 1002 is equal to the outer diameter of the electrochromic material 400 of the first electrochromic element 1001.

When the second electrochromic element 1002 is energized, the electrochromic material 400 of the second electrochromic element 1002 becomes dark, and light can be blocked. At this time, the light-transmitting region of the electrochromic assembly 1000 is subject to the light guide 300 of the second electrochromic element 1002, which may correspond to a small aperture of the camera. When the second electrochromic element 1002 is powered off and the first electrochromic element 1001 is powered on, the electrochromic material 400 of the first electrochromic element 1001 becomes dark, which can block light. At this time, the light transmission region of the electrochromic assembly 1000 is controlled by the light guide 300 of the first electrochromic element 1001, which may correspond to the middle aperture of the camera. When first electrochromic element 1001 and second electrochromic element 1002 all cut off the power supply, electrochromic material 400 all becomes transparent, can see through light for leaded light 300 in first electrochromic element 1001 and the second electrochromic element 1002 conducts light with electrochromic material 400 jointly, can be corresponding to the big diaphragm of camera this moment. With the camera, the three-stage iris diaphragm can be formed by the arrangement.

Based on the technical solution of the present embodiment, N (N is a positive integer greater than or equal to 2) electrochromic elements 10 may be sequentially stacked, and the optical axes of the light guides 300 of the electrochromic elements 10 overlap. Wherein, the diameters of the N corresponding light guides 300 are gradually increased (or decreased) in the thickness direction of the electrochromic assembly 1000; the outer diameters of the respective N electrochromic materials 400 may be equal. With the camera, so arranged, a multi-stage variable aperture having (N +1) stages can be formed.

Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of the camera module provided in the present application. The camera module of the present application may be a front-mounted camera module or a rear-mounted camera module.

The camera module 20 includes a main body 21 and a lens 22, and the main body 21 and the lens 22 are connected to form a cavity 23. The lens portion 22 is detachably connected to the body portion 21, or both are integrally formed. The cavity 23 is provided therein with a lens assembly 24 and a photosensitive chip 25. Lens assembly 24 may include a plurality of lenses that cooperate to increase the imaging effect of camera module 20. The photosensitive chip 25 is disposed on a side of the lens assembly 24 away from the lens portion 22 to meet the imaging requirements of the camera module 20.

It should be noted that in the description of the embodiments of the present application, "a plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

The end of the lens part 22 far from the main body part 21 is provided with the electrochromic element 10, that is, the photosensitive chip 25 and the electrochromic element 10 are respectively arranged at two opposite sides of the lens assembly 24 in the lighting direction. For the detailed structure of the electrochromic element 10, reference may be made to the description of the foregoing embodiments, and details are not repeated here. Further, the electrochromic device 10 can be electrically connected to a control circuit (not shown) of the camera module 20, so as to realize the power on or off of the electrochromic device 10 under the control of the control circuit, so that the size of the light-transmitting area of the electrochromic device 10 can be changed, thereby realizing the purpose of changing the size of the aperture of the camera module 20. In other words, when the electrochromic device 10 is used in the camera module 20, it can replace the conventional mechanical diaphragm, so that the camera module 20 has an iris diaphragm.

The following is a brief description of the cooperation between the camera module 20 and the electrochromic device 10:

based on the above detailed description, when the electrochromic device 10 is powered off, the electrochromic material therein is in a transparent state, and the size of the light-transmitting area can correspond to the large aperture of the camera; when the electrochromic element 10 is powered on, the electrochromic material therein is in a dark color state, and the size of the light-transmitting area can correspond to the small aperture of the camera. Further, in order to avoid aggregation of the electrochromic material in the electrochromic element 10 caused by long-time power-on, it may be defined that the electrochromic element 10 is in a default state when power is off, and the electrochromic element 10 is in an operating state when power is on.

When the user starts the camera module 20 to be in the shooting state, the electrochromic device 10 can be switched between the default state and the working state to meet the setting requirement of the user for adjusting the size of the aperture. The electrochromic element 10 may return to the default state after the user finishes shooting.

It should be noted that the electrochromic element 10 in the camera module 20 may also be the electrochromic device 1000 described in the above embodiments, and the camera module 20 may also have an iris diaphragm.

Referring to fig. 8 and 9 together, fig. 9 is a schematic structural diagram of another embodiment of the camera module provided in the present application.

The camera module 20 includes an optical element 30 and a photosensitive chip 25 arranged in a row along a lighting direction. The optical element 30 may be used as a lens of the camera module 20, so that the lens of the camera module 20 has an iris function. Specifically, the optical element 30 includes a lens 31 and the electrochromic element 10 attached to the lens 31, and the lens 31 and the light guide of the electrochromic element 10 are aligned along an optical axis 32 of the lens 31. For the detailed structure of the electrochromic element 10, reference may be made to the description of the foregoing embodiments, and details are not repeated here.

Similarly, the electrochromic device 10 can be electrically connected to a control circuit (not shown) of the camera module 20 to enable the electrochromic device 10 to be powered on or powered off under the control of the control circuit, so that the size of the light-transmitting area of the electrochromic device 10 can be changed, that is, the size of the light-transmitting area of the optical device 30 can be changed, thereby achieving the purpose of changing the size of the aperture of the camera module 20.

Further, other structures of the camera module in this embodiment are the same as or similar to those of the above embodiments, and are not described herein again.

It should be noted that the electrochromic element 10 in the optical element 30 may also be the electrochromic device 1000 described in the above embodiments, and the camera module 20 may also have an iris diaphragm.

Referring to fig. 10, fig. 10 is an exploded schematic view of a camera module according to another embodiment of the present disclosure.

The camera module 20 includes an optical element 30, a photosensitive chip 25, and an optical film 26 arranged in a row along a lighting direction. The optical element 30 includes a front lens 33, a rear lens 34, and the electrochromic element 10, and an optical axis of the rear lens 34 coincides with an optical axis of the front lens 33. The front lens 33 and the rear lens 34 may include a plurality of lens layers. Further, the electrochromic element 10 is connected to at least one of the front lens 33 and the rear lens 34, and the front lens 33 and the rear lens 34 are aligned with the light guide of the electrochromic element 10 along the optical axis of the front lens 33. For the detailed structure of the electrochromic element 10, reference may be made to the description of the foregoing embodiments, and details are not repeated here. In this embodiment, the electrochromic element 10 may be disposed between the front lens 33 and the rear lens 34, and connected to the front lens 33. Further, the optical film 26 may be an infrared ray-proof film.

In some embodiments, the optical element 30 may also be a unitary structure, that is, the front lens 33 and the rear lens 34 are respectively connected to the substrates on both sides of the electrochromic element 10, so as to form a sandwich structure in which the front lens 33 and the rear lens 34 sandwich the electrochromic element 10. Further, the front lens 33 and the rear lens 34 can also be used as substrates on two sides of the electrochromic device 10, so as to omit the original substrates on two sides of the electrochromic device 10, so that the thickness of the optical device 30 can be reduced, and the camera assembly 20 can be thinner and thinner.

Referring to fig. 11, fig. 11 is an exploded schematic view of an embodiment of an electronic device provided in the present application. The electronic device of the present application may be a portable device having a camera assembly, such as a mobile phone, a tablet computer, a notebook computer, and a wearable device.

The electronic device 40 includes a display module 41, a housing assembly 42, and a camera module 20. The camera module 20 is disposed between the display module 41 and the housing assembly 42. The housing assembly 42 includes a housing 421 and an electrochromic device 10, and the electrochromic device 10 is attached to a surface of the housing 421 close to the display module 41. Further, the housing 421 has a light-transmitting area, and the electrochromic device 10 is attached to the light-transmitting area of the housing 421, so that the camera module 20 can collect the ambient light through the light-transmitting area of the housing 421 and the electrochromic device 10. In this case, the material of the case 421 may be glass. In other embodiments, the electrochromic element 10 may be embedded in the housing 421 to facilitate the electronic device 40 to be light and thin. In the embodiment, the diaphragm of the camera module 20 is externally disposed, that is, the diaphragm is disposed on the housing of the electronic device 40.

For example, the display module 41 and the housing component 42 are enclosed to form an accommodating cavity 43, and the camera module 20 is disposed in the accommodating cavity 43. The camera module 20 may be electrically connected to the circuit board 45 disposed in the accommodating cavity 43, and is disposed corresponding to the electrochromic element 10. With this arrangement, the size of the aperture of the camera module 20 can be changed by changing the size of the light-transmitting area of the electrochromic element 10, so as to increase the photographing performance of the electronic device 40.

In addition, the electronic device 40 of the present application can also use the camera module 20 shown in fig. 8 to fig. 10, that is, the structure of the iris diaphragm (electrochromic element 10) is made to be the internal structure of the camera module 20 itself, so that the housing assembly 42 can be configured without disposing the electrochromic element 10, and the light-transmitting area is reserved, thereby simplifying the structure of the housing assembly 42.

It should be noted that the electrochromic element 10 in the electronic device 40 may also be the electrochromic device 1000 described in the above embodiments, and the camera module 20 may also have an iris diaphragm.

Referring to fig. 12, fig. 12 is an exploded schematic view of another embodiment of an electronic device provided in the present application.

The electronic device 40 also includes a display module 41, a housing assembly 42, and a camera module 20. The camera module 20 is disposed between the display module 41 and the housing assembly 42. The housing assembly 42 includes a housing 421, a protective lens 422, and an electrochromic device 10, wherein the electrochromic device 10 is attached to the protective lens 422. Further, the housing 421 has a mounting hole 423, and the protection lens 422 is disposed in the mounting hole 423, so that the camera module 20 can collect the ambient light through the protection lens 422 and the electrochromic element 10. In this case, the material of the case 421 may be stainless steel, aluminum alloy, titanium alloy, hard plastic, or the like. Further, the number of the camera modules 20 can be multiple, and the electrochromic element 10 can also form a structure with multiple variable apertures, so that the electrochromic element 10 corresponds to the camera modules 20 one by one, and the use requirements of the camera modules 20 on the apertures are met.

The housing 421 of the present embodiment may include a middle frame 4211 and a rear cover 4212. The middle frame 4211 may be used to set the camera module 20, and the mounting hole 423 may be specifically opened in the rear cover plate 4212.

Optionally, the housing assembly 42 may further include a decoration 424, the decoration 424 is embedded in the mounting hole 423, and the protection lens 423 and the electrochromic element 10 are connected to the decoration 424. The decoration 424 is mainly used to fix the protection lens 423, thereby increasing the reliability of the housing assembly 42.

In addition, the electronic device 40 of the present application may also use the camera module 20 shown in fig. 8 to fig. 10, that is, the structure of the iris diaphragm (electrochromic element 10) is made to be the internal structure of the camera module 20 itself, so that the housing assembly 42 may not be provided with the electrochromic element 10, and the protection lens 423 may also be a common lens, thereby simplifying the structure of the housing assembly 42.

In summary, the electronic device 40 provided in the embodiment of the present application is provided with the electrochromic element 10, and the electrochromic element 10 can be used as an iris diaphragm of the camera module 20, so as to replace a traditional mechanical iris diaphragm; the electronic device 40 has the characteristics of small volume, accurate control of the size of the aperture and the like, and can be lighter and thinner in structure.

Referring to fig. 13, fig. 13 is a schematic flow chart of an embodiment of a method for manufacturing an electrochromic device according to the present disclosure. The preparation method includes, but is not limited to, the following steps. The preparation method is described by taking the structure of the electrochromic element shown in fig. 1 as an example.

S131: preparing a first assembly plate and a second assembly plate.

In this step, preparing the first assembly board may specifically include plating an AR film layer on the first substrate 100, and etching an annular antireflection film 600, as shown in fig. 14; then, an ITO conductive layer is plated on the antireflection film 600, and the annular first conductive layer 101 is etched, as shown in fig. 15. The material of the first substrate 100 may be glass.

The first conductive layer 101 and the antireflection film 600 are stacked on the first substrate 100, and an axis of the through hole of the first conductive layer 101 coincides with an axis of the through hole of the antireflection film 600, as shown in fig. 2 and 15, so as to facilitate subsequent manufacturing processes.

In this step, the second assembly plate is prepared in a manner similar to that of the first assembly plate, and is not described in detail herein.

In some embodiments, the first conductive layer 101 and the second conductive layer 201 may be etched to form lead electrodes, respectively, so as to electrically connect the electrochromic element 10 and the flexible circuit board by using a patch technology. The extraction electrode may be a silver wire.

S132: a light guide is formed on the first assembly plate.

In this step, dispensing may be performed on the first substrate 100, and the optical paste is cured to form the light guide 300, as shown in fig. 16. Wherein the optical glue fills the through holes of the antireflection film 600 and the first conductive layer 101. Further, the light guide 300 is disposed in a cylindrical shape, and the cross section thereof is circular.

S133: a seal is formed on the first assembly plate.

In this step, a material such as PC or ABS may be coated on the first conductive layer 101, and the material is cured to form the sealing member 500, as shown in fig. 17. At this time, the sealing member 500, the light guide member 300 and the first assembly plate (specifically, the first conductive layer 101) together enclose to form an annular space.

S134: and an annular space formed by the sealing element, the light guide element and the first assembling plate in a surrounding way is filled with electrochromic materials.

In this step, depositing the electrochromic material 400 in an annular space formed by the sealing member 500, the light guide member 300 and the first conductive layer 101, and filling the annular space with the electrochromic material 400 may be specifically included, as shown in fig. 18. The electrochromic material 400 may be an organic polymer (including polyaniline, polythiophene, etc.), an inorganic material (prussian blue, a transition metal oxide, such as tungsten trioxide), an organic small molecule (such as viologen), or the like. At this time, one side of the electrochromic material 400 is electrically connected to the first conductive layer 101.

S135: and aligning and assembling the second assembling plate and the first assembling plate.

In this step, coating optical glue on the light guide 300 and the sealing member 500 on the surfaces far from the first substrate 100 may be specifically included, so that the second substrate 200 in the second assembly plate can be glued to the light guide 300, and the second conductive layer 201 can be glued to the sealing member 500, as shown in fig. 1. At this time, the other side of the electrochromic material 400 is electrically connected to the second conductive layer 201. Because the shape of the electrochromic material 400 is the same as that of the first conductive layer 101 and the second conductive layer 201, the voltage applied to the two opposite sides of the electrochromic material 400 can be a surface voltage, so that the color change rate and uniformity of the electrochromic material 400 are increased.

In some embodiments, a thinning process may be included in the manufacturing method. Since the substrates (including the first substrate 100 and the second substrate 200) are generally relatively thick due to the strength during the manufacturing and assembling processes, the substrates may be thinned after the assembling process is completed. Wherein, the substrate can adopt alkali-free glass with the thickness of 0.4mm by taking the strength and the thinning efficiency of the substrate into consideration. The thinning mode can be chemical thinning by adopting hydrofluoric acid, so that the substrate can be thinned to 0.3-0.35 mm. Further, after the thinning process, polishing process can be performed on the microscopic defects formed in the surface thinning process.

In some other embodiments, an antireflection film 600 may be further formed on a surface of the first substrate 100 away from the second substrate 200 to increase the transmittance of the electrochromic device 10 for light. Further, a layer of black ink may be silk-screened on the antireflection film 600 to form a light shielding member 800 on one side of the electrochromic device 10 for shielding the edge area of the electrochromic material 400, so as to increase the reliability of the electrochromic device 10. Of course, the antireflection film 600 and the light shielding member 800 may be formed on the surface of the second substrate 200 away from the first substrate 100.

It should be noted that, in the preparation process of the electrochromic element, an array structure with a large area and a plurality of electrochromic elements can be formed at one time, and then the array structure is cut into individual electrochromic elements; or one electrochromic element may be fabricated at a time. In order to improve efficiency, a plurality of electrochromic elements may be manufactured at once. When a plurality of electrochromic elements are manufactured at one time, a knife wheel can be used for cutting the small pieces, or a laser process can be used for cutting. And edging can be carried out after the cutting is finished so as to eliminate edge burrs.

Referring to fig. 19, fig. 19 is a schematic flow chart of another embodiment of a method for manufacturing an electrochromic device according to the present application. The preparation method includes, but is not limited to, the following steps. The preparation method will be described by taking the structure of the electrochromic device shown in fig. 5 as an example.

S191: preparing a first assembly plate and a second assembly plate.

In this step, preparing the first assembly board may specifically include plating an AR film layer on the first substrate 100, and etching an annular antireflection film 600, as shown in fig. 14; then, an ITO conductive layer is plated on the antireflection film 600, and the annular first conductive layer 101 is etched, as shown in fig. 15; then, a first insulating layer 102 is deposited on the first conductive layer 101, and a filling member 900 is printed in the through holes of the antireflection film 600 and the first conductive layer 101, as shown in fig. 20. A gap is left between the filling member 900 and the first insulating layer 102, and the surfaces of the filling member 900 and the first insulating layer which are far away from the first substrate 100 can be flush, so as to facilitate the subsequent preparation process. Further, on one hand, an ITO conductive layer is plated on the first insulating layer 102, and a circular third conductive layer 103 is etched; on the other hand, an ITO conductive layer (another part of the annular first conductive layer 101) is plated on the filling member 900, and is electrically connected to the ITO conductive layer on the antireflection film 600, as shown in fig. 21. At this time, the first conductive layer 101 has a zigzag cross-sectional structure as shown in fig. 21, and a gap is left between the first conductive layer 101 and the third conductive layer 103, so as to achieve the electrical insulation requirement therebetween. Wherein, the gaps can be circular.

S192: a light guide and a spacer are formed on the first assembly plate.

In this step, the light guide and the spacer may be made of the same material, which may specifically include dispensing on the filling member 900 and the first insulating layer 102, and curing the optical adhesive to form the light guide 300 and the spacer 700, as shown in fig. 22. The optical adhesive fills the through hole of the first conductive layer 101 and the gap between the first conductive layer 101 and the third conductive layer 103.

S193: a seal is formed on the first assembly plate.

In this step, a material such as PC or ABS may be coated on the third conductive layer 103, and the material is cured to form the sealing member 500, as shown in fig. 23. At this time, the sealing member 500, the light guide member 300 and the first assembly plate are commonly enclosed to form an annular space, and the annular space can be divided into two independent sub-spaces by the partition member 700.

S194: and an annular space formed by the sealing element, the light guide element and the first assembling plate in a surrounding way is filled with electrochromic materials.

In this step, depositing the electrochromic material 400 in an annular space formed by the sealing member 500, the light guide member 300 and the first conductive layer 101, and filling the annular space with the electrochromic material 400 may be specifically included. In which the electrochromic material 400 is separated into two independent portions, such as a first sub-electrochromic material 401 and a second sub-electrochromic material 402 shown in fig. 24, due to the separation function of the separator 700. At this time, one side of the first sub electrochromic material 401 is electrically connected to the first conductive layer 101, and one side of the second sub electrochromic material 402 is electrically connected to the third conductive layer 103.

S195: and aligning and assembling the second assembling plate and the first assembling plate.

In this step, an optical adhesive may be coated on the surfaces of the light guide 300, the sealing member 500, and the spacer 700 away from the first substrate 100, so that the second assembly plate can be bonded to the first assembly plate, as shown in fig. 5. At this time, the other side of the first sub electrochromic material 401 is electrically connected to the second conductive layer 201, and the other side of the second sub electrochromic material 402 is electrically connected to the fourth conductive layer 203. Because the shape of the first sub-electrochromic material 401 is the same as that of the first conductive layer 101 and the second conductive layer 201, and the shape of the second sub-electrochromic material 401 is the same as that of the third conductive layer 103 and the fourth conductive layer 203, the voltage applied to the two opposite sides of the electrochromic material 400 can be a surface voltage, so that the rate and uniformity of the color change of the electrochromic material 400 are increased. Further, due to the separation function of the spacers 700 and the electrical insulation design of the conductive traces, the power on or off of the first sub-electrochromic material 401 and the second sub-electrochromic material 402 can be controlled independently.

Further, other method steps and corresponding product structures in this embodiment are the same as or similar to those in the above embodiment, and are not described herein again.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes that can be directly or indirectly applied to other related technologies, which are made by using the contents of the present specification and the accompanying drawings, are also included in the scope of the present application.

Claims

1. The electrochromic element is characterized by comprising a first substrate and a second substrate which are oppositely arranged, wherein a light guide part and an electrochromic material are arranged between the first substrate and the second substrate, and the electrochromic material surrounds the light guide part.

2. The electrochromic element according to claim 1, wherein the light guide member is made of one of an optical adhesive, a photoresist, and a photo-curing adhesive.

3. The electrochromic element according to claim 1, wherein the light guide member is made of glass.

4. The electrochromic element according to claim 3, wherein the first substrate and the second substrate are made of the same material as the light guide member, and the light guide member is integrated with the first substrate or the second substrate.

5. The electrochromic element of claim 1, further comprising a spacer surrounding the light guide and separating the electrochromic material into a first sub-electrochromic material and a second sub-electrochromic material, the first sub-electrochromic material being proximal to the light guide and the second sub-electrochromic material being distal to the light guide.

6. The electrochromic element according to claim 5, wherein the spacer is made of the same material as the light guide.

7. The electrochromic element according to claim 5, wherein a side of the first substrate adjacent to the second substrate is provided with a first electrically conductive layer and a third electrically conductive layer which are electrically insulated, a side of the second substrate adjacent to the first substrate is provided with a second electrically conductive layer and a fourth electrically conductive layer which are electrically insulated, the first electrically conductive layer and the second electrically conductive layer are electrically connected to the first sub-electrochromic material, and the third electrically conductive layer and the fourth electrically conductive layer are electrically connected to the second sub-electrochromic material.

8. The electrochromic device as claimed in claim 1, wherein at least one side of the electrochromic device is provided with a light shielding member, the light shielding member is provided with a light hole, the light hole is disposed opposite to the light guiding member, and a projection of the light guiding member on the light shielding member is located in the light hole.

9. The electrochromic element according to claim 8, wherein the light guide is in a cylindrical shape, the electrochromic material is in an annular shape, the light hole is coaxial with the light guide, the aperture of the light hole is larger than the diameter of the light guide, and the aperture of the light hole is smaller than or equal to the outer diameter of the electrochromic material.

10. The electrochromic element according to claim 1, further comprising a sealing member that seals the electrochromic material together with the first substrate and the second substrate.

11. The electrochromic element according to claim 10, wherein a first conductive layer is provided on a side of the first substrate adjacent to the second substrate, and a second conductive layer is provided on a side of the second substrate adjacent to the first substrate, and wherein the first conductive layer and the second conductive layer sandwich the sealing member and are electrically connected to the electrochromic material.

12. The electrochromic element according to claim 11, wherein the sealing member is a plastic frame, and the plastic frame is glued to the first conductive layer and the second conductive layer; or, the sealing element is a glass frame, and the glass frame is welded to the first substrate and the second substrate.

13. The electrochromic element according to claim 1, wherein at least one side of the electrochromic element is provided with an antireflection film.

14. An electrochromic assembly is characterized by comprising a first electrochromic element and a second electrochromic element which are arranged in a stacked mode, wherein the first electrochromic element and the second electrochromic element respectively comprise a first substrate and a second substrate which are arranged oppositely, a light guide part and an electrochromic material are arranged between the first substrate and the second substrate, and the electrochromic material surrounds the light guide part; the optical axes of the light guide parts of the first electrochromic element and the second electrochromic element are overlapped, and the projections of the light guide parts of the first electrochromic element and the second electrochromic element on the first substrate are not overlapped.

15. The electrochromic assembly of claim 14, wherein the light guides of the first and second electrochromic elements are arranged in a cylindrical shape, and the electrochromic materials of the first and second electrochromic elements are arranged in a ring shape; the diameter of the light guide part of the first electrochromic element is larger than that of the light guide part of the second electrochromic element, and the outer diameter of the electrochromic material of the second electrochromic element is larger than that of the light guide part of the first electrochromic element.

16. The electrochromic assembly of claim 15, wherein an outer diameter of the electrochromic material of the second electrochromic element is equal to an outer diameter of the electrochromic material of the first electrochromic element.

17. The electrochromic assembly of claim 14, wherein the second substrate of the first electrochromic element is an integrally formed structure with the first substrate of the second electrochromic element.

18. A camera module, characterized in that, the camera module includes a lens component, a photosensitive chip and the electrochromic element of any one of claims 1 to 13, the photosensitive chip and the electrochromic element are respectively disposed on two opposite sides of the lens component in a lighting direction.

19. A camera module, characterized in that, the camera module includes an optical element and a photosensitive chip arranged along a lighting direction, the optical element includes a lens and the electrochromic element according to any one of claims 1 to 13, the electrochromic element is attached to the lens, and the lens and a light guide of the electrochromic element are aligned along an optical axis of the lens.

20. A camera module, comprising an optical element and a photosensitive chip arranged along a lighting direction, wherein the optical element comprises a front lens, a rear lens and the electrochromic element according to any one of claims 1 to 13, an optical axis of the rear lens coincides with an optical axis of the front lens, the electrochromic element is connected to at least one of the front lens and the rear lens, and the front lens, the rear lens and a light guide of the electrochromic element are aligned along the optical axis of the front lens.

21. The camera module of claim 20, wherein the electrochromic element is disposed between the front lens and the rear lens.

22. The camera module of claim 20, wherein at least one of the front lens and the rear lens comprises a plurality of lens layers.

23. An electronic device, comprising a housing assembly and a camera module disposed opposite to the housing assembly, wherein the housing assembly comprises a housing and the electrochromic device according to any one of claims 1 to 13, and the housing is provided with a transparent area, and the electrochromic device is attached to the transparent area, so that the camera module can collect ambient light through the transparent area and the electrochromic device.

24. An electronic device, comprising a housing assembly and a camera module disposed opposite to the housing assembly, wherein the housing assembly comprises a housing, a protection lens and the electrochromic device according to any one of claims 1 to 13, the housing has a mounting hole, the protection lens is disposed in the mounting hole, and the electrochromic device is attached to the protection lens, so that the camera module can collect ambient light via the protection lens and the electrochromic device.

25. An electronic device comprising a housing and the camera module of any of claims 18-22, wherein the housing is provided with a light-transmissive region, and wherein the camera assembly collects ambient light via the light-transmissive region.

26. An electronic device, comprising a housing, a protection lens, and the camera module according to any one of claims 18-22, wherein the housing has a mounting hole, the protection lens is disposed in the mounting hole, and the camera module collects ambient light through the protection lens.