CN111897172A - Electrochromic device and electronic terminal comprising same - Google Patents
Electrochromic device and electronic terminal comprising same Download PDFInfo
- Publication number
- CN111897172A CN111897172A CN202010904231.0A CN202010904231A CN111897172A CN 111897172 A CN111897172 A CN 111897172A CN 202010904231 A CN202010904231 A CN 202010904231A CN 111897172 A CN111897172 A CN 111897172A
- Authority
- CN
- China
- Prior art keywords
- electrode
- layer
- conductive substrate
- electrochromic device
- color
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/161—Gaskets; Spacers; Sealing of cells; Filling or closing of cells
Abstract
The invention provides an electrochromic device and an electronic terminal comprising the same. The electrochromic device comprises an electrochromic film, an anode, a cathode and an edge sealing structure; the color-changing layer is positioned in the overlapped area between the first conductive substrate and the second conductive substrate; the first electrode and the second electrode are respectively arranged on the non-overlapping areas of the first conductive substrate and the second conductive substrate; the edge sealing structure at least covers the side faces of the first electrode and the second electrode close to the overlapping region, the side face of the color changing layer, part or all of the side face of the first conductive substrate close to the second electrode, and part or all of the side face of the second conductive substrate close to the first electrode. Compared with the prior art, the electrochromic device provided by the invention has higher waterproof and airtight performance, can reduce the area of a non-color-changing region, and prevents a plasticizer and the like from invading into a color-changing layer in the processing process of the electrochromic device.
Description
Technical Field
The invention belongs to the technical field of electrochromism, and relates to an electrochromic device and an electronic terminal comprising the same.
Background
Electrochromism (Electrochromism) refers to a phenomenon in which a color is reversibly changed due to the direction of an electric field when a voltage is applied, and a substance having such a property, in which the optical property of a material is reversibly changed due to an electrochemical redox reaction, is referred to as an electrochromic substance. This electrochromic substance has the following characteristics: when no electric signal is applied from the outside, no color is displayed and when an electric signal is applied, a color is displayed, or conversely, when no electric signal is applied from the outside, a color is displayed and when an electric signal is applied, a color disappears.
An electrochromic device is a device utilizing a phenomenon that the light transmittance of an electrochromic substance changes due to an electrochemical redox reaction, and is used for adjusting the light transmittance or reflectance of displays such as Electronic Shelf Labels (ESL) that require a specific part to change color, public devices such as large posters and information boards, smart windows, architectural window glass, automobile mirrors, flexible displays, automobile skylights, and sports glasses, and recently, has an infrared shielding effect in addition to color change in a visible light region, and is attracting attention as an application prospect of energy saving products.
CN101960374A discloses an electrochromic device, and an electrode for an electrochromic device, the electrode comprising: a transparent substrate having first and second surfaces; a conductive layer disposed on the second surface of the substrate; and an electrode layer disposed on the conductive layer, wherein the electrode layer comprises doped tin oxide nanoparticles and an organic binder, and wherein the electrode layer is transparent; this patent application is not concerned with subsequent packaging. CN106959566A discloses a method for preparing a quasi-solid electrochromic device, which comprises a first substrate, a first transparent conductive layer, an electrochromic layer, an ion transport layer, an ion storage layer, a second transparent conductive layer, and a second substrate in this order; the preparation method comprises the following steps: (1) preparing a first functional substrate; (2) preparing a second functional substrate; (3) preparing an ion storage layer; (4) aligning and heating the combined sheets; (5) removing bubbles in the high-pressure kettle and (6) printing frame glue. The application of the patent carries out gluing treatment on the glass frame of the device to isolate water vapor or gas, but certain scenes cannot be sealed at the outer edge of the glass, so that the application range of the device is narrow.
Therefore, it is necessary to provide a new electrochromic device and edge sealing method to meet different application requirements.
Disclosure of Invention
An object of the present invention is to provide an electrochromic device and an electronic terminal including the same. The electrochromic device provided by the invention can block the influence of plasticizers, water vapor and the like contained in the subsequent processing process and the water vapor and the like in the use process on the performance of the electrochromic device, and has stable application performance; meanwhile, the electrode (the first electrode and the second electrode) included in the electrochromic device is protected to a certain extent, and if the electrode is completely covered by the packaging material, edge sealing of the second layer of the electrochromic device can be avoided under some use scenes with mild use environments.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides an electrochromic device, including a first conductive substrate, a second conductive substrate, a color-changing layer, a first electrode, a second electrode, and an edge sealing structure.
The first conductive substrate and the second conductive substrate are arranged in a staggered mode to form an overlapping region and a non-overlapping region, and the color changing layer is located in the overlapping region between the first conductive substrate and the second conductive substrate;
the first electrode and the second electrode are respectively arranged on the non-overlapping areas of the first conductive substrate and the second conductive substrate;
the edge sealing structure at least covers the side faces, close to the overlapping area, of the first electrode and the second electrode, the side face of the color changing layer, part or all of the side face, close to the second electrode, of the first conductive substrate, and part or all of the side face, close to the first electrode, of the second conductive substrate.
The invention refers to an unsealed electrochromic device as an electrochromic lamination, and the structure of the electrochromic lamination can be explained as that the areas of the electrochromic layers are smaller than those of the first conducting layer and the second conducting layer, and meanwhile, the first conducting layer and the second conducting layer are arranged in a staggered mode, namely, the first conducting layer and the second conducting layer cannot be completely overlapped on a two-dimensional plane, and parts of the first conducting layer and the second conducting layer are exposed outside before electrodes are not arranged. Spatially, the electrodes are disposed in the non-overlapping region of the conductive layer and connected to the conductive layer, and the electrodes are divided into a first electrode and a second electrode (which may also be referred to as a positive electrode and a negative electrode) disposed on the non-overlapping region of the first conductive layer and the second conductive layer, respectively.
The edge sealing structure of the electrochromic device provided by the invention has the main function of sealing the electrochromic lamination layer, so that the electrochromic device can be ensured that water vapor or a plasticizer and the like in the processing process cannot enter the color changing layer to influence the performance of the electrochromic device in the subsequent processing process and the subsequent using process, and a certain protection effect is also realized on the electrode.
The electrochromic device provided by the invention can be subjected to edge sealing at the edge of the electrochromic laminated layer, so that the stability of the electrochromic function is realized, the problem that the electrochromic device provided by the prior art cannot be widely applied due to edge sealing at the outer edge of glass is avoided, and the storage and transportation of the electrochromic device after being prepared are facilitated.
Compared with the prior art, the electrochromic lamination and the first/second electrodes are closer, so that the difficulty of water vapor, plasticizer and other substances entering the color changing layer is increased, and the better sealing effect is realized.
In the present invention, the distances between the first electrode and the color-changing layer and between the second electrode and the color-changing layer are preferably each independently 0.1 to 3mm, for example, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, etc., and more preferably each independently 0.1 to 1mm, for example, 1mm, 0.8mm, 0.6mm, 0.5mm, 0.4mm, 0.3mm, 0.2mm, 0.1mm, etc.
Preferably, the width of the first electrode and the second electrode is each independently 0.5-10mm, such as 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, and the like.
Preferably, the thickness of the first and second electrodes are each independently no more than 250 μm, such as 250 μm, 240 μm, 230 μm, 220 μm, 210 μm, 200 μm, 150 μm, 100 μm, 50 μm, 20 μm, 10 μm, 5 μm, 3 μm, 2 μm, 1 μm, and the like. The minimum thickness of the first electrode and the second electrode is not particularly limited in the present invention, but it should be understood by those skilled in the art that the thickness thereof may not be 0 due to the presence of the first electrode and the second electrode.
Preferably, the edge seal structure has a thickness of 50-500 μm, such as 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, etc.
In the present invention, the direction from the first conductive substrate to the second conductive substrate is taken as a vertical direction, and the direction parallel to the first conductive substrate/the second conductive substrate is taken as a horizontal direction.
The thickness of the edge banding structure refers to the maximum thickness value of the edge banding structure in the vertical direction, and the thickness of the edge banding structure may be different at different horizontal positions because the part of the edge banding structure covers the first electrode/the second electrode. The thickness of the edge sealing structure corresponding to the first electrode/the second electrode in the vertical direction is ensured to cover the surfaces of the first electrode and the second electrode, and the thickness of the edge sealing structure is not particularly limited. The edge sealing structure with a certain thickness provided by the invention can achieve a good water and oxygen blocking effect.
Preferably, the first conductive substrate comprises a first substrate layer and a first conductive layer, and the first conductive layer is located on one side of the first substrate layer close to the color-changing layer.
Preferably, the second conductive substrate comprises a second substrate layer and a second conductive layer, and the second conductive layer is located on one side of the second substrate layer close to the color-changing layer.
In the invention, the materials of the first substrate layer and the second substrate layer are independent, and can be a flexible base layer, glass and the like, wherein the flexible base layer is made of any one or a combination of at least two of polyethylene terephthalate (PET), cyclic olefin copolymer or cellulose triacetate. The materials of the first conductive layer and the second conductive layer are independent from each other, and can be any one or a combination of at least two of Indium Tin Oxide (ITO), Aluminum Zinc Oxide (AZO), fluorine-doped tin oxide (FTO), nano silver wires, graphene, carbon nanotubes, metal grids, or silver nanoparticles.
Preferably, the edge sealing structure further covers a part of the surface of the first conductive substrate, which is located in the overlapping region and is far away from the color-changing layer.
Preferably, the edge sealing structure further covers a part of the surface of the second conductive substrate, which is located in the overlapping region and is far away from the color-changing layer.
In the prior art, generally purchased or used conductive layers are arranged on a substrate, and the conductive layers and the substrate layer are applied together when the conductive layers and the substrate layer are applied, so that the conductive substrate is called.
Preferably, the surfaces of the first electrode and the second electrode except for one side far away from the overlapping region are covered by the edge sealing structure.
It should be noted that, in the present invention, the electrode is disposed on the conductive layer of the conductive substrate, and therefore, one surface thereof is necessarily connected to the conductive layer. The surface of the electrode in the invention refers to the surface of the electrode exposed except the surface connected with the conductive layer. When the electrode provided by the invention is completely wrapped by the edge sealing structure except the surface connected with the conducting layer, the edge sealing structure provided by the invention has a good protection effect on the electrode, and can avoid edge sealing of the second layer.
In the invention, the shape of the edge sealing structure can be half I shape, T shape, 1 shape and the like.
Preferably, the surfaces of the first and second electrodes are covered by the edge sealing structure.
Preferably, an insulating layer is further arranged between the first electrode and the edge sealing structure and between the second electrode and the edge sealing structure.
The surface of the electrode provided by the invention can be coated with an insulating layer to further protect the electrode material.
In the invention, the insulating layer is used for protecting the first electrode/the second electrode before the edge sealing structure is arranged, and the materials of the first electrode/the second electrode are prevented from being oxidized. The first electrode/the second electrode usually adopt a conductive metal, such as a conductive silver paste, and the surface of the silver paste is easily oxidized, and since the edge sealing structure is not immediately disposed on the surface of the first electrode/the second electrode after the first electrode/the second electrode is disposed, in order to avoid the surface oxidation of the first electrode/the second electrode during the processing process, an insulating layer is usually covered on the surface of the first electrode/the second electrode to protect the first electrode/the second electrode from being oxidized. The material of the insulating layer can be insulating varnish, insulating resin glue and the like.
Preferably, the electrochromic device further comprises a first membrane and/or a second membrane;
the first membrane is disposed on at least one outer surface of an edge seal covering the first electrode;
the second membrane is disposed on at least one outer surface of the edge seal structure covering the second electrode.
In the invention, the first membrane and/or the second membrane can be arranged on at least one outer surface of the edge sealing structure to further increase the water-oxygen barrier property, and the area of the edge sealing structure can be covered. The membrane of the invention can be a water-oxygen barrier membrane material sold in the market. In the invention, the outer surface of the edge sealing structure can be parallel to one surface of the color changing layer or perpendicular to one surface of the color changing layer.
Preferably, the electrochromic device further comprises a first adhesive film and/or a second adhesive film;
the first adhesive film is arranged on the surface of one side, far away from the first conductive substrate, of the edge sealing structure covering the first electrode, and/or on the partial or whole surface of one side, far away from the color changing layer, of the second conductive substrate;
the second adhesive film is arranged on the surface of one side, far away from the second conductive substrate, of the edge sealing structure covering the second electrode, and/or on the partial or whole surface of one side, far away from the color changing layer, of the first conductive substrate.
Preferably, a release film is further disposed on one side of the first adhesive film away from the first conductive substrate and/or one side of the second adhesive film away from the second conductive substrate.
In the invention, the adhesive film can be an OCA or COF high-transparency and high-adhesion barrier adhesive film, and a heavy-release surface and a light-release surface exist in the adhesive film, so that both surfaces of the electrochromic device can be covered in an application scene with small area of the electrochromic device; in the application scene of large area of the electrochromic device, only four edges can be covered. The adhesive film is arranged on the electrochromic device, so that on one hand, the function of further increasing the water-oxygen barrier property can be achieved; on the other hand, the electrochromic device can be conveniently pasted to other surfaces.
In the invention, the adhesive film can be arranged on the outer side of the diaphragm, or the adhesive film can be directly arranged on the outer side of the edge sealing structure without arranging the diaphragm.
In the invention, the size of the arranged adhesive film can only cover the edge sealing structure, and the outer surface of the corresponding conductive substrate can also be completely covered. The release film is easy to store and transport, and the release film is removed when in use.
Preferably, the edge seal structure is formed by curing a sealant having an initial viscosity of greater than 10kcps, such as 11kcps, 15kcps, 18kcps, 20kcps, 30kcps, 40kcps, 50kcps, 80kcps, 100kcps, 120kcps, 150kcps, 180kcps, 200kcps, 220kcps, 250kcps, 280kcps, 300kcps, or the like.
Preferably, the sealant has an initial viscosity of 300kcps or less.
The sealant of the invention preferably adopts glue with fast curing and high viscosity, such as high-temperature cured butyl glue, polyurethane glue, LOCA, OCR and other water glue or ultraviolet cured UV glue, and the initial viscosity is more than or equal to 10 kcps.
According to the invention, by selecting the sealant with higher viscosity, the phenomenon that the sealant is not cured in time to cause collapse and the like when the edge sealing structure is obtained by curing can be avoided. Preferably, the initial viscosity of the sealant should not be too high to avoid the sealant from being unable to fill the gap between the electrode and the color-changing layer.
Preferably, the sealant is selected from at least one of butyl rubber or polyurethane rubber, LOCA optical rubber or OCR optical rubber.
Preferably, the method for forming the edge sealing structure includes sequentially dispensing and curing. Preferably, during the dispensing process of the sealant, or after the dispensing process of the sealant and before the curing process, a vacuum pumping operation is preferably performed on the electrochromic device to facilitate removing air bubbles between the sealant and the electrode/color-changing layer, so that the sealant effectively seals the periphery of the color-changing layer and the surface of the electrode, thereby ensuring that water vapor or a plasticizer and the like in the processing process cannot enter the color-changing layer to affect the performance of the electrochromic device, and having a certain protection effect on the electrode.
Preferably, the dispensing is performed on a dispensing apparatus, and the dispensing apparatus includes a dispensing device and a baffle device.
The glue dispensing device provided by the invention is provided with the glue dispensing mechanism and the baffle mechanism, the glue dispensing mechanism determines the glue dispensing speed and the size of a glue dispensing opening according to the total glue dispensing amount, and determines the shape of the glue dispensing opening according to the glue dispensing width, wherein the shape of the glue dispensing opening comprises a flat glue dispensing opening, a circular glue dispensing opening and glue dispensing openings with other shapes in the prior art; the baffle mechanism is tightly attached to the outline of the electrochromic lamination, uncured glue is scraped, and redundant glue is scraped.
Preferably, the color-changing layer includes a first electrochromic layer, a second electrochromic layer, and an electrolyte layer disposed between the first electrochromic layer and the second electrochromic layer.
Preferably, the color change layer has a thickness ranging from 5 to 100 μm; the thickness of the first/second electrochromic layer is nano-scale; the electrolyte layer has a thickness of 5 to 100 μm, excluding 5 μm and 100 μm.
In a third aspect, the present invention provides an electronic terminal comprising an electrochromic device as described in the first aspect.
Preferably, the electronic terminal is applied to vehicles, buildings and electronic products. For example, it can be used in side windows, sunroofs, front windshields, architectural glass, optical lenses, rear-view mirrors, decorative films, or filters.
Compared with the prior art, the invention has the following beneficial effects:
(1) the edge sealing structure of the electrochromic device provided by the invention has the main function of sealing the electrochromic lamination layer, so that the electrochromic device can be ensured that water vapor or a plasticizer and the like in the processing process cannot enter the color changing layer to influence the performance of the electrochromic device in the subsequent processing process and the subsequent using process, and a certain protection effect is also realized on the electrode;
(2) the edge sealing structure provided by the invention has a good protection effect on the electrode, and can avoid the edge sealing of a second layer;
(3) compared with the existing electrochromic device, the electrochromic device provided by the invention has better storage performance and use stability, and better temperature resistance and humidity resistance.
Drawings
Fig. 1 is a schematic cross-sectional view of an electrochromic device provided in embodiment 1 of the present invention;
fig. 2 is a schematic diagram of a dislocated structure of an electrochromic device provided in embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of an electrochromic stack with a protective tape attached according to example 1 of the present invention;
fig. 4 is a schematic cross-sectional view of an electrochromic device provided in embodiment 2 of the present invention;
fig. 5 is a schematic diagram of a dislocated structure of an electrochromic device provided in embodiment 3 of the present invention;
fig. 6 is a schematic cross-sectional view of an electrochromic device provided in embodiment 4 of the present invention;
fig. 7 is a schematic cross-sectional view of an electrochromic device provided in embodiment 5 of the present invention;
fig. 8 is a schematic cross-sectional view of an electrochromic device provided in embodiment 6 of the present invention;
fig. 9 is a schematic cross-sectional view of an electrochromic device according to comparative example 2 of the present invention.
Wherein, 1-a first conductive substrate; 2-a color-changing layer; 3-a second conductive substrate; 4-a first electrode; 5-a second electrode; 6-edge sealing structure;
11-a first substrate layer, 12-a first conductive layer, 21-a first electrochromic layer, 22-an electrolyte layer, 23-a second electrochromic layer, 31-a second substrate layer, 32-a second conductive layer, 71-a first membrane, 72-a second membrane, 81-a first adhesive film, 82-a second adhesive film, 91-a first light release film, 92-a second light release film, 101-a first substrate, 102-a second substrate, 111-a first adhesive layer, and 112-a second adhesive layer.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
An electrochromic device is composed of a first conductive substrate 1, a second conductive substrate 3, a color changing layer 2, a first electrode 4, a second electrode 5 and an edge sealing structure 6, as shown in fig. 1;
the first conductive substrate 1 comprises a first base material layer 11 and a first conductive layer 12, and the first conductive layer 12 is positioned on one side, close to the color changing layer 2, of the first base material layer 11;
the second conductive substrate 3 comprises a second base material layer 31 and a second conductive layer 32, and the second conductive layer 32 is positioned on one side, close to the color-changing layer 2, of the second base material layer 31;
the color-changing layer 2 includes a first electrochromic layer 21, an electrolyte layer 22, and a second electrochromic layer 23, which are sequentially stacked;
as shown in fig. 2, the first conductive substrate 1 and the second conductive substrate 3 are arranged in a staggered manner in an L-shape, so as to form an overlapping region and a non-overlapping region;
wherein the color changing layer is disposed between the first conductive substrate 1 and the second conductive substrate 3 at the overlapping region;
wherein the first electrode 4 is disposed on the non-overlapping region of the first conductive substrate 1, and the second electrode 5 is disposed on the non-overlapping region of the second conductive substrate 3;
the edge sealing structure 6 covers all surfaces of the first electrode 4 and the second electrode 5, the side surface of the color changing layer 2, all side surfaces of the first conductive substrate 1 close to the second electrode 5, all side surfaces of the second conductive substrate 3 close to the first electrode 4, partial surfaces of the first conductive substrate 1 in the overlapping area and on one side far away from the color changing layer 2, and partial surfaces of the second conductive substrate 3 in the overlapping area and on one side far away from the color changing layer 2;
the width of the first electrode 4 and the width of the second electrode 5 are both 3mm, the thickness of the first electrode 4 and the thickness of the second electrode 5 are both 30 micrometers, the distance between the two electrodes and the color changing layer 2 is both 1mm, the thickness of the color changing layer 2 is 30 micrometers, and the thickness of the edge sealing structure is 100 micrometers.
The preparation method comprises the following steps:
(1) wiping the prepared electrochromic lamination (provided with the electrodes) completely, as shown in fig. 3, attaching a protective tape near the edge of the second substrate layer 31 close to the first electrode 4, wherein the protective tape can prevent the liquid sealant glue from being diffused too much (to the middle of the film), so that the surface of the film is not easy to clean after being stained with the curing glue;
(2) using a glue dispensing device to dispense glue to the first electrode 4 of the electrochromic lamination in the step (1) by using butyl glue, enabling a baffle mechanism to be tightly attached to the outline of the electrochromic lamination, scraping uncured glue to be flat, and scraping redundant glue away from the electrochromic lamination (ensuring that the shape and the position of the cured glue are the same as those of the edge sealing structure 6);
(3) tearing off the protective adhesive tape;
(4) heating to solidify the glue under the condition of vacuumizing;
(5) and then, turning over the electrochromic laminated layer, attaching a protective adhesive tape to the edge, close to the second electrode 5, of the first substrate layer 11 according to the method, dispensing the second electrode 5, and curing to obtain the electrochromic device.
Example 2
An electrochromic device is composed of a first conductive substrate 1, a second conductive substrate 3, a color changing layer 2, a first electrode 4, a second electrode 5 and an edge sealing structure 6, as shown in fig. 4;
only, the difference from embodiment 1 is that, in this embodiment, the first electrode 4 and the second electrode 5 are both disposed at the edge position of the non-overlapping region, and the sides of the first electrode 4 and the second electrode 5 away from the overlapping region are flush with the side surfaces of the first conductive substrate 1 and the second conductive substrate 3, respectively; the distance between the two electrodes and the color changing layer 2 is 3 mm;
the edge sealing structure 6 covers the other surfaces of the first electrode 4 and the second electrode 5 except the surface on the side far away from the overlapping region, the side surface of the color changing layer 2, the whole side surface of the first conductive substrate 1 close to the second electrode 5, the whole side surface of the second conductive substrate 3 close to the first electrode 4, the partial surface of the first conductive substrate 1 on the side far away from the color changing layer 2 in the overlapping region, and the partial surface of the second conductive substrate 3 on the side far away from the color changing layer 2 in the overlapping region.
When the use environment of the electrochromic device is not in an extreme use environment (such as high temperature, high pressure, high humidity and the like), the electrode material of the invention can be arranged in the edge zone, and the collapse of the glue at the side close to the edge caused by untimely curing can be avoided.
Example 3
An electrochromic device is distinguished from example 1 in that the first conductive substrate 1 and the second conductive substrate 3 are dislocated in a half-drum manner, as shown in fig. 5.
Example 4
An electrochromic device, as shown in fig. 6, differs from embodiment 1 only in its structure, further comprising a first diaphragm 71 and a second diaphragm 72;
the first diaphragm 71 is arranged on one side of the edge sealing structure covering the first electrode 4, which is far away from the first conductive substrate 1, and the size of the first diaphragm 71 only needs to cover the side surface;
the second membrane 72 is disposed on a side of the edge sealing structure covering the second electrode 5, which is far from the second conductive substrate 3, and the second membrane 72 only needs to cover the side surface;
the width of the first electrode 4 and the width of the second electrode 5 are both 1mm, the thickness of the first electrode 4 and the thickness of the second electrode 5 are both 5 micrometers, the distance between the two electrodes and the color changing layer 2 is both 0.3mm, the thickness of the color changing layer 2 is 50 micrometers, and the thickness of the edge sealing structure is 100 micrometers.
The preparation method comprises the following steps:
(1) wiping the prepared electrochromic film (provided with the anode and the cathode) completely, and sticking a protective adhesive tape near the edge of the second substrate layer 31 close to the first electrode 4, wherein the protective adhesive tape can prevent the surface of the film from being easily cleaned after being stained with curing glue due to too much spreading of liquid sealant glue (spreading to the vicinity of the middle position of the film);
(2) using a glue dispensing device to dispense glue to the first electrode 4 of the electrochromic lamination in the step (1) by using polyurethane glue, enabling a baffle plate mechanism to be tightly attached to the outline of the film, scraping uncured glue to be flat, and scraping redundant glue away from the electrochromic film (ensuring that the shape and the position of the cured glue are the same as those of the edge sealing structure 6);
(3) tearing off the protective adhesive tape;
(4) adhering the first diaphragm 71;
(5) curing the polyurethane adhesive at a preset temperature under the condition of vacuum pumping, wherein the preset temperature range is 60-140 ℃;
(6) and then turning over the electrochromic film, attaching a protective adhesive tape to the edge, close to the second electrode 5, of the first substrate layer 11 according to the method, dispensing the second electrode 5, attaching the second diaphragm 72, and curing to obtain the electrochromic device.
The present embodiment helps to further improve the water and oxygen barrier performance of the electrochromic device by providing the first membrane 71 and the second membrane 72 on the edge sealing structure.
Example 5
An electrochromic device, as shown in fig. 7, differs from embodiment 4 in that a first adhesive film 81 and a second adhesive film 82 are respectively replaced with a first adhesive film 71 and a second adhesive film 72, and a first light release film 91 is disposed on a side of the first adhesive film 81 away from a first conductive substrate 1, and a second light release film 92 is disposed on a side of the second adhesive film 82 away from a second conductive substrate 3.
The preparation method comprises the following steps:
(1) wiping the prepared electrochromic film (provided with the anode and the cathode) completely, and sticking a protective adhesive tape near the edge of the second substrate layer 31 close to the first electrode 4, wherein the protective adhesive tape can prevent the surface of the film from being easily cleaned after being stained with curing glue due to too much spreading of liquid sealant glue (spreading to the vicinity of the middle position of the film);
(2) using a glue dispensing device to dispense glue to the first electrode 4 of the electrochromic lamination in the step (1) by using polyurethane glue, enabling a baffle plate mechanism to be tightly attached to the outline of the film, scraping uncured glue to be flat, and scraping redundant glue away from the electrochromic film (ensuring that the shape and the position of the cured glue are the same as those of the edge sealing structure 6);
(3) tearing off the protective adhesive tape;
(4) curing the polyurethane adhesive at a preset temperature under the condition of vacuum pumping, wherein the preset temperature range is 60-140 ℃;
(5) taking an OCA adhesive film (composed of a light release film, an adhesive layer and a heavy release film which are sequentially laminated), tearing off the heavy release film, and then adhering the OCA adhesive film to a preset position of an electrochromic device to form a first adhesive film 81 and a first light release film 91;
(6) turning over the electrochromic film, attaching a protective adhesive tape to the edge, close to the second electrode 5, of the first substrate layer 11 according to the method, dispensing and curing the second electrode 5, and attaching the second adhesive film 82 with the second light release film 92 to obtain the electrochromic device.
The first adhesive film 81 and the second adhesive film 82 are arranged on the electrochromic device, so that on one hand, the function of further increasing the water-oxygen barrier property can be achieved; on the other hand, after the first light release film 91 and the second light release film 92 are torn off, the electrochromic device can be conveniently pasted on other surfaces for final packaging.
Example 6
An electrochromic device, as shown in fig. 8, differs from embodiment 5 in that a first adhesive film 81 covers the entire surface of the side of a second substrate layer 31 away from a color-changing layer 2 in addition to covering an edge sealing structure; the second adhesive film 82 covers the entire surface of the side of the first substrate layer 11 away from the color-changing layer 2, in addition to the edge sealing structure. The preparation process is referred to example 5.
Comparative example 1
An electrochromic device is different from embodiment 1 in that an edge sealing structure is not provided.
Comparative example 2
An existing electrochromic device is provided, and the structure of the existing electrochromic device is shown in fig. 9, which is different from that of embodiment 1 in that no edge sealing structure is arranged on the first electrode 4 and the second electrode 5, the electrochromic stack is bonded between two substrates (including the first substrate 101 and the second substrate 102) through two adhesive layers (including the first adhesive layer 111 and the second adhesive layer 112), and the edge sealing structure 6 is arranged at the edge between the first substrate 101 and the second substrate 102.
This structure results in a large width of the area where the color of the edge cannot be changed, and the black edge area of the periphery of the product is large in view. Moreover, edges of two sides of the color changing layer 2 are not sealed, which can cause plasticizer and the like in the adhesive layer to enter the color changing layer 2 in the processing process, and the sealing effect is not good.
Performance testing
The electrochromic devices provided in the examples and comparative examples were subjected to performance tests by the following methods:
(1) high temperature and high humidity storage performance 8585 experiment and 6595 experiment:
8585 experiment: and (3) storing the device for 1000 hours at 85 ℃ and 85% relative humidity by using a constant temperature and humidity experimental box, and taking out the color change effect of the test edge every 200 hours, wherein the color change effect comprises a transmittance range, a response speed, an electrode appearance and a color change condition (uniformity). The range change of transmittance and the response time change are within the qualified range.
6595 experiment: and (3) storing the device for 1000 hours at 65 ℃ under the condition of 95% relative humidity by using a constant temperature and humidity experimental box, and taking out the color change effect of the test edge every 200 hours, wherein the color change effect comprises the transmittance change range, the response speed, the electrode appearance and the color change condition (uniformity). The transmittance variation range and the response time variation pass the test within the qualified range.
Wherein, the transmittance range change in the qualified range means that: the transmission range change (T) is not allowed to exceed 5% before and after the test, and the transmission range is Tmax-Tmin，TmaxAt maximum transmittance, TminIs the minimum transmittance;
for example, the transmittance range before the test has Tmax-Tmin60%, the transmittance after the test has a range of Tmax-TminWhen the transmittance is 50%, the transmittance is changed by 10%>5%, the test is judged to be failed.
Response time variation within the acceptable range means: the response time change is not allowed to exceed 1s before and after the test, for example, if the response time before the test is 2s and the response time after the test is 3.5s, the response time change is 1.5s, and the test is determined to be failed.
Electrode appearance: observing whether the color of the electrode changes obviously before and after the test, and if not, judging that the appearance passes the test; if the change is obvious, judging that the appearance fails the test;
color change effect: and observing the color change uniformity degree of the electrochromic device, and judging that the color change effect is good if the whole color change uniformity is good and the phenomenon that the color change of a part of visible areas is fast or slow is avoided.
The results of the above tests are shown in table 1 below:
TABLE 1
As can be seen from the performance test results, compared with comparative examples 1-2, the electrochromic device provided by the invention has better storage performance and use stability, and has better temperature resistance and humidity resistance.
The applicant states that the present invention is illustrated by the above examples of the electrochromic device of the present invention and the preparation method and application thereof, but the present invention is not limited to the above process steps, i.e. it does not mean that the present invention must rely on the above process steps to be carried out. It will be apparent to those skilled in the art that any modification of the present invention, equivalent substitutions of selected materials and additions of auxiliary components, selection of specific modes and the like, which are within the scope and disclosure of the present invention, are contemplated by the present invention.
Claims (10)
1. An electrochromic device is characterized by comprising a first conductive substrate, a second conductive substrate, a color-changing layer, a first electrode, a second electrode and an edge sealing structure;
the first conductive substrate and the second conductive substrate are arranged in a staggered mode to form an overlapping region and a non-overlapping region, and the color changing layer is located in the overlapping region between the first conductive substrate and the second conductive substrate;
the first electrode and the second electrode are respectively arranged on the non-overlapping areas of the first conductive substrate and the second conductive substrate;
the edge sealing structure at least covers the side faces, close to the overlapping area, of the first electrode and the second electrode, the side face of the color changing layer, part or all of the side face, close to the second electrode, of the first conductive substrate, and part or all of the side face, close to the first electrode, of the second conductive substrate.
2. Electrochromic device according to claim 1, characterised in that the spacing between the first electrode and the colour change layer and between the second electrode and the colour change layer is each independently 0.1-5mm, further preferably each independently 0.1-1 mm;
preferably, the width of the first electrode and the second electrode is 0.5-10mm independently;
preferably, the thickness of the first electrode and the second electrode is respectively equal to or less than 250 μm;
preferably, the thickness of the edge sealing structure is 50-500 μm.
3. The electrochromic device according to claim 1 or 2, characterized in that the first conductive base comprises a first substrate layer and a first conductive layer, the first conductive layer being located on the side of the first substrate layer adjacent to the color-changing layer;
preferably, the second conductive substrate comprises a second substrate layer and a second conductive layer, and the second conductive layer is located on one side of the second substrate layer close to the color-changing layer.
4. The electrochromic device according to any one of claims 1 to 3, wherein the edge seal structure further covers a portion of the surface of the first conductive substrate on a side thereof that is away from the color-changing layer and that is within the overlap region;
preferably, the edge sealing structure further covers a part of the surface of the second conductive substrate, which is located in the overlapping region and is far away from the color-changing layer.
5. The electrochromic device according to any of claims 1 to 4, characterized in that the surfaces of the first and second electrodes, except for the side remote from the overlap region, are covered by the edge seal structure;
preferably, the surfaces of the first and second electrodes are covered by the edge sealing structure;
preferably, an insulating layer is further arranged between the first electrode and the edge sealing structure and between the second electrode and the edge sealing structure.
6. Electrochromic device according to any of claims 1-5, characterized in that the electrochromic device further comprises a first and/or a second membrane;
the first membrane is disposed on at least one outer surface of an edge seal covering the first electrode;
the second membrane is disposed on at least one outer surface of the edge seal structure covering the second electrode.
7. Electrochromic device according to any of claims 1 to 6, characterized in that the electrochromic device further comprises a first adhesive film and/or a second adhesive film;
the first adhesive film is arranged on the surface of one side, far away from the first conductive substrate, of the edge sealing structure covering the first electrode, and/or on the partial or whole surface of one side, far away from the color changing layer, of the second conductive substrate;
the second adhesive film is arranged on the surface of one side, far away from the second conductive substrate, of the edge sealing structure covering the second electrode, and/or on the partial or whole surface of one side, far away from the color changing layer, of the first conductive substrate;
preferably, a release film is further disposed on one side of the first adhesive film away from the first conductive substrate and/or one side of the second adhesive film away from the second conductive substrate.
8. The electrochromic device as in any one of claims 1-7, wherein said edge seal structure is formed by curing a sealant having an initial viscosity of 10kcps or greater;
preferably, the sealant has an initial viscosity of 300kcps or less;
preferably, the sealant is at least one of butyl rubber, epoxy glue, UV glue, polyurethane glue, LOCA optical glue or OCR optical glue.
9. The electrochromic device according to any of claims 1-8, characterized in that the color-changing layer comprises a first electrochromic layer, a second electrochromic layer, and an electrolyte layer disposed between the first and second electrochromic layers.
10. An electronic terminal, characterized in that it comprises an electrochromic device according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010904231.0A CN111897172A (en) | 2020-09-01 | 2020-09-01 | Electrochromic device and electronic terminal comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010904231.0A CN111897172A (en) | 2020-09-01 | 2020-09-01 | Electrochromic device and electronic terminal comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111897172A true CN111897172A (en) | 2020-11-06 |
Family
ID=73224611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010904231.0A Pending CN111897172A (en) | 2020-09-01 | 2020-09-01 | Electrochromic device and electronic terminal comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111897172A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112558370A (en) * | 2020-12-22 | 2021-03-26 | 北京小米移动软件有限公司 | Electrochromic module, shell and electronic equipment |
| CN114637150A (en) * | 2020-12-16 | 2022-06-17 | 深圳市光羿科技有限公司 | Electrochromic device |
| WO2022152070A1 (en) * | 2021-01-13 | 2022-07-21 | 光羿智能科技(苏州)有限公司 | Electrochromic device and control method for same |
| CN114779549A (en) * | 2021-01-22 | 2022-07-22 | 深圳市光羿科技有限公司 | Electrochromic device, preparation method thereof and electronic equipment |
-
2020
- 2020-09-01 CN CN202010904231.0A patent/CN111897172A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114637150A (en) * | 2020-12-16 | 2022-06-17 | 深圳市光羿科技有限公司 | Electrochromic device |
| WO2022127643A1 (en) * | 2020-12-16 | 2022-06-23 | 深圳市光羿科技有限公司 | Electrochromic device |
| CN114637150B (en) * | 2020-12-16 | 2023-10-20 | 深圳市光羿科技有限公司 | Electrochromic device |
| CN112558370A (en) * | 2020-12-22 | 2021-03-26 | 北京小米移动软件有限公司 | Electrochromic module, shell and electronic equipment |
| WO2022152070A1 (en) * | 2021-01-13 | 2022-07-21 | 光羿智能科技(苏州)有限公司 | Electrochromic device and control method for same |
| CN114779549A (en) * | 2021-01-22 | 2022-07-22 | 深圳市光羿科技有限公司 | Electrochromic device, preparation method thereof and electronic equipment |
| WO2022156659A1 (en) * | 2021-01-22 | 2022-07-28 | 光羿智能科技(苏州)有限公司 | Electrochromic apparatus and method for preparing same, and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111897172A (en) | Electrochromic device and electronic terminal comprising same | |
| US10921673B2 (en) | Method for fabricating solid state electrochromic device, solid state electrochromic device and its applications | |
| US20090181203A1 (en) | Laminated glazing and sealing and peripheral reinforcing means for same | |
| US20110171443A1 (en) | Sealed switchable glazing | |
| AU2016374204A1 (en) | Electrochromic apparatus | |
| JP5267955B2 (en) | Method for manufacturing electrophoretic display device | |
| JP2712327B2 (en) | REINFORCED LIQUID CRYSTAL OPTICAL ELEMENT, ITS MANUFACTURING METHOD, AND LIGHT CONTROL DEVICE | |
| CN108604035B (en) | Integration of electrochromic films on substrates | |
| US20230158778A1 (en) | Electrochromic films with edge protection | |
| JP2009169229A (en) | Electrochromic element and method of manufacturing the same | |
| CN213715659U (en) | Electrochromic device and electronic terminal comprising same | |
| CN219016754U (en) | Electrochromic diaphragm, assembly and color changing device | |
| JP7452051B2 (en) | Light control sheet, its manufacturing method, and laminated glass using the same | |
| CN111123599B (en) | Light shield with electrochromic function and manufacturing method thereof | |
| US20240134235A1 (en) | Switchable film, laminated glazing, and method of producing switchable film | |
| WO2022156659A1 (en) | Electrochromic apparatus and method for preparing same, and electronic device | |
| CN214896136U (en) | Electrochromic cover plate assembly and electronic equipment | |
| CN113711118B (en) | Dimming sheet and dimming device | |
| JP2020177039A (en) | Dimming sheet and laminated glass | |
| JP2019191481A (en) | Dimming body | |
| EP4298477A1 (en) | Switchable film, laminated glazing, and method of producing switchable film | |
| TWI779060B (en) | Switchable optical window comprising a sheet and at least one switchable optical element | |
| WO2013137407A1 (en) | Electrophoretic display device | |
| CN117215097A (en) | Dimming module and terminal product thereof | |
| JP2013210532A (en) | Sheet for manufacturing electrophoresis display device and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |