CN114815431A - Electrochromic device and electronic equipment - Google Patents
Electrochromic device and electronic equipment Download PDFInfo
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- CN114815431A CN114815431A CN202110084919.3A CN202110084919A CN114815431A CN 114815431 A CN114815431 A CN 114815431A CN 202110084919 A CN202110084919 A CN 202110084919A CN 114815431 A CN114815431 A CN 114815431A
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- 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
- G02F1/155—Electrodes
-
- 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
-
- 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
- G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The invention provides an electrochromic device and electronic equipment, wherein the electrochromic device comprises a first substrate layer, a first conducting layer, an electrochromic layer, a second conducting layer and a second substrate layer which are sequentially stacked; the first conducting layer is made of conducting materials and comprises a first area and a second area, and the conducting materials on the edge, adjacent to the first area, of the second area lack a preset width to form a first partition area; a first conductive piece is arranged on one surface, far away from the first substrate layer, of the second area, a second conductive piece is arranged on one surface, far away from the second substrate layer, of the second conductive layer, and the first conductive piece and the second conductive piece are combined; the first area is connected with the first extraction electrode, and the second area is connected with the second extraction electrode; the electrochromic layer is provided with a second partition area, and the projection of the second partition area on the first conducting layer is at least partially overlapped with the first partition area. The electrochromic device greatly simplifies the production process, improves the production efficiency and is beneficial to improving the yield of products.
Description
Technical Field
The invention belongs to the technical field of electrochromism, and relates to an electrochromic device and electronic equipment.
Background
The optical properties of electrochromic devices can undergo stable and reversible color changes under the action of an applied electric field, and the electrochromic devices have very wide application in the fields of automobiles, buildings and consumer electronics.
In the prior art, when an electrode of an electrochromic device is led out, an electrode lead connected with a first conducting layer and an electrode lead connected with a second conducting layer are usually led out from a first basal layer and a second basal layer respectively, so that hot-press welding needs to be performed twice, for example, after the electrode lead of the first basal layer is welded, the electrochromic device is turned over again, and the electrode lead of the second basal layer is welded, so that the process is complex, the automatic production is not facilitated, the working efficiency is low, and the yield is not improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an electrochromic device and electronic equipment.
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 substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer, and a second substrate layer, which are sequentially stacked; the electrochromic layer comprises a color-changing material layer, an electrolyte layer and an ion storage layer which are sequentially stacked;
the first conducting layer is made of conducting materials and comprises a first area and a second area, and conducting materials of the edge, adjacent to the first area, of the second area lack a preset width so as to form a first partition area;
a first conductive piece is arranged on one surface, far away from the first substrate layer, of the second area, a second conductive piece is arranged on one surface, far away from the second substrate layer, of the second conductive layer, and the first conductive piece and the second conductive piece are combined;
the first region is connected with a first extraction electrode, and the second region is connected with a second extraction electrode;
the electrochromic layer is provided with a second partition area, and the projection of the second partition area on the first conducting layer is at least partially overlapped with the first partition area.
The conductive material of the first conductive layer and the second conductive layer is formed by one or at least two of ITO (indium tin oxide), zinc aluminum oxide, fluorine-doped tin oxide, silver nanowires, graphene, carbon nanotubes, metal grids and silver nanoparticles. The material of the color-changing material layer may be specifically selected from color-changing materials capable of forming a solid thin film in the prior art, such as NiO in inorganic materials, WO 3 ，Nb 2 O 5 ，TiO 2 Etc.; polythiophene derivatives and copolymer systems in organic materials, and the like; metal conjugated systems, such as prussian blue, and the like. The electrolyte layer is preferably a solid electrolyte layer formed by solidifying an electrolyte solution, and the material of the electrolyte layer comprises a high molecular polymer, a metal ion salt and an additive. The material of the ion storage layer includes a metal oxide formed of one or at least two metal elements of groups 4 to 12, or a mixture of metal oxides, or a metal oxide doped with any other metal oxide. The material of the first and second substrate layers comprises polyethylene terephthalate, cyclic olefin copolymer, cellulose triacetate, or glass. The first extraction electrode and the second extraction electrode are made of conductive materials, such as metal, alloy, conducting wires, flexible circuit boards and the like.
The invention divides the first conducting layer into two mutually isolated areas by arranging the first isolating area on the first conducting layer, the conducting material of the first area and the conducting material of the second area can not be mutually and electrically communicated, and then a first extraction electrode is extracted from the first area, a second extraction electrode is extracted from the second area, so that the first extraction electrode and the second extraction electrode are both extracted from the first conductive layer of the electrochromic device, thus, the flexible circuit board integrating two lead-out circuits can be adopted during welding, one-time hot-press welding is carried out from one surface of the first conducting layer of the electrochromic device, the welding extraction of the first extraction electrode and the second extraction electrode can be realized at the same time, the production process is greatly simplified, the production efficiency and the product yield are improved, and is advantageous in reducing the area of the electrode lead-out region where discoloration (i.e., color/transmittance change) does not occur as much as possible. In order to avoid the occurrence of micro short circuit inside the electrochromic device, a second partition area is further arranged on the electrochromic layer, so that the situation that the first partition area is filled with conductive substances or conductive particles and the like in the electrochromic layer to cause partition failure of the first partition area is avoided. When the electrochromic device is prepared, a first laminated piece and a second laminated piece are respectively prepared, wherein the first laminated piece comprises a first substrate layer, a first conducting layer and a color-changing material layer which are sequentially laminated, the second laminated piece comprises a second substrate layer, a second conducting layer and an ion storage layer which are sequentially laminated, or the first laminated piece comprises a first substrate layer, a first conducting layer and an ion storage layer which are sequentially laminated, and the second laminated piece comprises a second substrate layer, a second conducting layer and a color-changing material layer which are sequentially laminated; and arranging an electrolyte layer between the first laminated member and the second laminated member, and laminating the first laminated member and the second laminated member. By presetting the first conductive piece and the second conductive piece, when the first laminated piece and the second laminated piece are combined, the first conductive piece and the second conductive piece can be combined, and the second conductive layer can be conveniently and tightly connected with the second area, so that the second electrode led out from the second area of the first conductive layer can well supply power to the second conductive layer, the process is simple and convenient, and the production capacity is greatly improved.
Preferably, at least part of the side surfaces of the first and second electrically conductive members are in contact with the electrochromic layer; the color-changing material layer is positioned on one side close to the first conducting layer, the second partition area is arranged on the color-changing material layer, and the second partition area divides the color-changing material layer into two areas which are not connected with each other; or, the ion storage layer is located at one side close to the first conductive layer, the second partition area is arranged on the ion storage layer, and the second partition area divides the ion storage layer into two areas which are not connected with each other.
At least part of the side surfaces of the first conductive piece and the second conductive piece are in contact with the electrochromic layer, so that no material of the electrochromic layer is left among the first conductive piece, the second conductive piece and the electrochromic layer, and the area of an area without color change is reduced. It should be noted that areas lacking the material of the electrochromic layer will form non-color changing areas. The inventors of the present invention found that the materials of the color-changing material layer and the ion storage layer have a minute electronic conductivity in certain cases. Therefore, if the material of the color-changing material layer and the material of the ion storage layer are filled into the first partition area, the conductive materials of the first area and the second area can be conducted through the material of the color-changing material layer or the material of the ion storage layer filled in the first partition area, and thus, internal micro short circuit occurs. In addition, the first isolation region may be filled with conductive particles during processing, thereby causing internal micro-short circuit. Therefore, the second partition area is arranged on the ion storage layer or the color-changing material layer, so that the product stability and the service life of the electrochromic device are further improved.
In one possible embodiment, a second separation region is provided on the side of the color-changing material layer or the ion storage layer facing away from the first electrically conductive layer;
in a further possible embodiment, the second separation region is provided on the side of the first substrate layer facing away from the color-changing material layer or the ion storage layer.
Preferably, the second partition region is filled with an electrolyte material that is the same as the material of the electrolyte layer, so that the electrolyte layer is in contact with the first partition region through the electrolyte material in the second partition region.
The inventors of the present invention found that the material of the electrolyte layer is an electronic insulator. Therefore, the second partition region is further filled with the electrolyte material, so that the occurrence of internal micro short circuit is further avoided, and the product stability and the service life of the electrochromic device are further improved.
Preferably, the first and/or second substrate layer is a flexible substrate layer.
The flexible substrate material includes, but is not limited to, any one of or a combination of at least two of polyethylene terephthalate (PET), cyclic olefin copolymer, or cellulose triacetate, typical but non-limiting combinations include combinations of PET with cyclic olefin copolymer, cyclic olefin copolymer with cellulose triacetate, PET with cellulose triacetate, or PET, cyclic olefin copolymer with cellulose triacetate. Preferably, the plastic base material has a thickness of 20 to 500. mu.m, and may be, for example, 20 μm, 50 μm, 100. mu.m, 150. mu.m, 200. mu.m, 250. mu.m, 300. mu.m, 350. mu.m, 400. mu.m, 450. mu.m or 500. mu.m, without being limited to the values listed, and other values not listed within the range of values are equally applicable.
According to the invention, at least one of the first substrate layer and the second substrate layer is set to be a bendable flexible substrate layer, so that the precision requirement on the thickness of the first conductive piece and the second conductive piece can be reduced, the second conductive layer and the second region can still be ensured to be tightly connected under the condition that the first conductive piece or the second conductive piece is slightly thicker or thinner, the disconnection possibility of the first conductive piece and the second conductive piece is reduced, the electrochromic device is prevented from being disconnected, and the process realizability and the product yield of the electrochromic device are improved.
Preferably, the surface roughness of the first conductive member is greater than or equal to 3 μm, and/or the surface roughness of the second conductive member is greater than or equal to 3 μm.
According to the invention, through setting the surface roughness of the first conductive piece and the second conductive piece, the contact point of the opposite surfaces of the first conductive piece and the second conductive piece can be increased, so that the contact tightness degree of the first conductive piece and the second conductive piece is improved, the electric communication effectiveness of the first conductive piece and the second conductive piece is ensured, and the second electrode led out from the second area can be ensured to well supply power for the second conductive layer.
Preferably, a first bus bar is disposed on the first conductive layer.
In the invention, the first bus bar is used for improving the voltage distribution uniformity of the first conducting layer, thereby improving the color change speed and the color change uniformity of the electrochromic device.
Preferably, a second bus bar is disposed on the second conductive layer, and the second conductive member is a partial portion of the second bus bar, or the second conductive member is connected to the second bus bar; the projection of the first bus bar on the first conductive layer and the projection of the second bus bar on the first conductive layer are not overlapped with each other.
In the invention, the second bus bar is used for improving the voltage distribution uniformity of the second conducting layer, thereby improving the color change speed and the color change uniformity of the electrochromic device. The second conductive piece is used as a part of the second bus bar or extends to the second conductive piece, so that the second conductive piece does not need to be arranged independently, the second conductive piece can be manufactured when the second bus bar is manufactured, the processing steps are simplified, and the production capacity is improved. By adjusting the distribution of the first bus bar and the second bus bar on the plane, the first bus bar and the second bus bar do not contact up and down in the direction from the first conductive layer to the second conductive layer, because once the first bus bar and the second bus bar contact, short circuit failure of the electrochromic device may occur. Through the design, the product reliability of the electrochromic device is greatly improved.
Preferably, the surface resistance of the first conductive layer is larger than the surface resistance of the second conductive layer, and the first bus bar is disposed along the periphery of the first region.
In the invention, under the condition that the conductive materials of the first conductive layer and the second conductive layer are the same, the larger the surface resistance is, the smaller the thickness of the conductive material is, and the higher the light transmittance of the conductive layer is, so that the display effect of the color of the electrochromic layer can be improved, but the voltage distribution on the conductive layer is also uneven, and the color change rate and the color change uniformity of the electrochromic layer are reduced. Therefore, the matching of the first conductive layer with higher surface resistance and the second conductive layer with lower surface resistance cooperatively realizes the effects of vividly displaying the color of the electrochromic layer and quickly and uniformly changing the color of the electrochromic device. Because the surface resistance of the first conducting layer is large, a first bus bar needs to be arranged on the first conducting layer, the first bus bar is used for improving the voltage distribution uniformity of the first conducting layer, and the first bus bar is arranged along the periphery of the first area of the electrochromic device, so that the electrochromic device can be ensured to have a color change area as large as possible, and the color change speed and the color change uniformity of the electrochromic device are improved. The first bus bar may not be disposed at the periphery of the first region adjacent to the second region to reduce the possibility of short circuit. Because the surface resistance of the second conducting layer is smaller, the second conducting layer can be only provided with the second conducting piece without being provided with the second bus bar, and the product cost can be further saved. Through the design, the display effect of the color of the electrochromic layer is greatly improved, and the product reliability, the color changing speed and the color changing uniformity of the electrochromic device are improved.
Optionally, the first bus bar and the electrochromic layer are not in contact, thereby avoiding the metal of the first bus bar from participating in the redox reaction of the electrochromic device. The first bus bar and the electrochromic layer may also be in contact when the material surface of the first bus bar is passivated or covered with an insulating layer or the like.
Preferably, the ratio of the surface resistance of the first conductive layer to the surface resistance of the second conductive layer is greater than or equal to 1.5, and may be, for example, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 7, 8, 9, 10, 15 or 20, but is not limited to the recited values, and other values not recited in the numerical range are also applicable.
In the present invention, in the above range of the surface resistivity ratio, the first bus bar is provided on the first conductive layer, and the bus bar is not provided on the second conductive layer, so that the electrochromic device can exhibit the color of the electrochromic layer clearly and achieve the effect of rapid and uniform color change.
Preferably, the surface resistance of the first conducting layer is larger than that of the second conducting layer, and the color-changing material layer is positioned on one side close to the first conducting layer.
According to the invention, the color material layer is arranged on one side close to the first conducting layer, so that the color display effect of the electrochromic device is better when a user watches from the outer side of the first conducting layer. Preferably, the thickness of the color-changing material layer is 1nm to 10 μm, and may be, for example, 1nm, 5nm, 10nm, 50nm, 80nm, 100nm, 200nm, 500nm, 1 μm, 5 μm, 10 μm, or the like. The thickness of the color-changing material layer is moderately increased, which is beneficial to deepening the color effect of the electrochromic device. Preferably, the thickness of the solid electrolyte layer is 5 to 200 μm; for example, it may be 5 μm, 8 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 150 μm, 160 μm, 180 μm, or 200 μm. Preferably, the thickness of the ion storage layer is 1nm to 10 μm, and may be, for example, 1nm, 5nm, 10nm, 50nm, 80nm, 100nm, 200nm, 500nm, 1 μm, 5 μm, 10 μm, or the like.
Optionally, a seal is further included, the seal being disposed along a peripheral side of the electrochromic layer. According to the invention, by arranging the sealing element, the periphery of the electrochromic layer can be sealed, and water vapor and the like are prevented from invading, so that the service life of the electrochromic device is prolonged.
Preferably, one surface of the first substrate layer, which is far away from the first conductive layer, is connected to the first substrate layer through a first adhesive layer, and the first adhesive layer is made of a material having an ultraviolet blocking effect.
The first substrate layer of the present invention may adopt a flexible material and/or a rigid material, wherein the rigid material may be selected from glass, rigid plastic, etc., and the flexible material may include, but is not limited to, any one of polyethylene terephthalate (PET), cyclic olefin copolymer, or cellulose triacetate, or a combination of at least two thereof. Preferably a transparent material. Through setting up first substrate layer, can improve the protection to electrochromic device, improve electrochromic device's mechanical structure intensity to further avoid the invasion of the aquatic oxygen of external environment oxygen etc. from first stratum basale and influence electrochromic device's life. Because the adhesive layer can be foamed due to long-term environmental ultraviolet irradiation, the first adhesive layer facing the environment side is made of an adhesive layer material capable of blocking ultraviolet light, so that the inner interlayer foaming of the electrochromic device can be avoided, and the service life of the electrochromic device is prolonged.
In a second aspect, the present invention also provides an electronic device, including the electrochromic device described above.
The electronic equipment comprising the electrochromic device is low in production cost, simple and convenient in production process, high in production efficiency, high in product yield and good in product stability.
Preferably, the first substrate layer of the electrochromic device is close to the side on which ambient light is incident.
In the electronic device of the present invention, when ambient light is incident from only one side of the electrochromic device, the first substrate layer is disposed close to the incident side of the ambient light. Thereby be convenient for through adjusting first conducting layer, the discoloration material layer etc. that is close to first stratum basale one side for electronic equipment has better colour show effect, changes colour fast and the even effect of discolouing.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the first partition area is arranged on the first conducting layer, so that the first conducting layer is divided into two mutually partitioned areas, the conducting material of the first area and the conducting material of the second area are not mutually and electrically communicated, the first leading-out electrode is led out from the first area, the second leading-out electrode is led out from the second area, and the first leading-out electrode and the second leading-out electrode are both led out from the first conducting layer of the electrochromic device, so that the welding of the first leading-out electrode and the second leading-out electrode can be realized through one-time hot-press welding, the production process is greatly simplified, the production efficiency is improved, and the product yield is favorably improved. In order to avoid the occurrence of micro short circuit inside the electrochromic device, a second partition area is further arranged on the electrochromic layer, so that the situation that the first partition area is filled with conductive substances or conductive particles and the like in the electrochromic layer to cause partition failure of the first partition area is avoided. By presetting the first conductive piece and the second conductive piece, when the first laminated piece and the second laminated piece are combined, the first conductive piece and the second conductive piece can be combined, so that the second conductive layer can be conveniently electrically connected with the second area, the second electrode led out from the second area of the first conductive layer can well supply power to the second conductive layer, the process is simple and convenient, and the production capacity is greatly improved.
Drawings
Fig. 1 is a schematic top view structure diagram of an electrochromic device according to an eighth embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure view along a-a cross-sectional direction of an electrochromic device according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure view in the a-a cross-sectional direction of an electrochromic device according to a second embodiment of the present invention;
fig. 4 is a schematic cross-sectional structure diagram of an electrochromic device provided in the third embodiment of the present invention in the a-a cross-sectional direction;
fig. 5 is a schematic cross-sectional structure view in the B-B cross-sectional direction of an electrochromic device according to a fourth embodiment of the present invention;
fig. 6 is a schematic cross-sectional structure view in the C-C cross-sectional direction of an electrochromic device according to a fourth embodiment of the present invention;
fig. 7 is a schematic cross-sectional structure view in the B-B cross-sectional direction of an electrochromic device according to a fifth embodiment of the present invention;
fig. 8 is a schematic cross-sectional structure view in the C-C cross-sectional direction of an electrochromic device according to a fifth embodiment of the present invention;
fig. 9 is a schematic cross-sectional view of an electrochromic device according to a cross-sectional direction B-B in an embodiment seven of the present invention;
fig. 10 is a schematic structural diagram of an electronic device according to an eighth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only illustrative of the present invention, and do not limit the scope of the present invention. Likewise, the following examples are only some but not all examples of the present invention, and all other examples obtained by one of ordinary skill in the art without any inventive step are within the scope of the present invention.
Reference herein 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 application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Example one
As shown in fig. 1, the present embodiment proposes an electrochromic device 100, and the electrochromic device 100 includes an electrode drawing region 101.
As shown in fig. 2, the electrochromic device 100 includes a first substrate layer 1, a first conductive layer 2, an electrochromic layer, a second conductive layer 6, and a second substrate layer 7, which are sequentially stacked; the electrochromic layer comprises a electrochromic material layer 3, an electrolyte layer 4 and an ion storage layer 5 which are sequentially stacked, wherein the electrochromic material layer 3 is arranged on one side close to the first conducting layer 2. The first conductive layer 2 is made of ITO (indium tin oxide), the first conductive layer 2 comprises a first area 21 and a second area 22, and the conductive material of the edge of the second area 22 adjacent to the first area 21 lacks a preset width to form a first partition area 221; the preset width is 0.1 mm.
In the electrode lead-out region 101 of the electrochromic device 100, a first conductive member 81 is disposed on the surface of the second region 22 away from the first substrate layer 1, a second conductive member 82 is disposed on the surface of the second conductive layer 6 away from the second substrate layer 7, and the first conductive member 81 and the second conductive member 82 are aligned; the surface roughness of the first conductive member 81 is 3 μm and the surface roughness of the second conductive member 82 is 2 μm. The first region 21 is connected with a first extraction electrode (not shown in the figure), and the second region 22 is connected with a second extraction electrode (not shown in the figure); at least part of the side of the conductive member 8 is in contact with the electrochromic layer. The color-changing material layer 3 is provided with a second partition area 31, the color-changing material layer 3 is coated on the surface of the first conducting layer 2 to form a first laminated piece in the preparation process, the second partition area 31 is arranged on the surface, away from the first conducting layer 2, of the color-changing material layer 3, the width of the second partition area 31 is 0.2mm, and the second partition area 31 is located on the projection of the first conducting layer 2 and partially overlapped with the first partition area 221 and partially not overlapped. A second laminate is prepared comprising a second substrate layer 7, a second conductive layer 6 and an ion storage layer 5 stacked in this order.
An electrolyte material is added between the first laminate and the second laminate, and the first laminate and the second laminate are laminated in a butt joint manner, so that the second partition region 31 is filled with the electrolyte material which is the same as the material of the electrolyte layer 4, and the electrolyte layer 4 is in contact with the first partition region 221 through the electrolyte material in the second partition region 31.
The electrochromic layer has a thickness of 50 μm, the first conducting member has a thickness of 25 μm, and the second conducting member has a thickness of 25 μm. The first substrate layer is made of flexible PET. The second substrate layer is made of flexible PET.
In the electrochromic device of the embodiment, the first partition area 221 is arranged on the first conducting layer 2, so that the first conducting layer 2 is divided into two areas which are mutually partitioned, the conducting material of the first area 21 and the conducting material of the second area 22 cannot be mutually communicated, a first extraction electrode is extracted from the first area 21, a second extraction electrode is extracted from the second area 22, so that the first extraction electrode and the second extraction electrode are both extracted from the first conducting layer 2 of the electrochromic device, a flexible circuit board integrating two extraction lines can be adopted during welding, one-time hot-press welding is carried out on one surface of the first conducting layer of the electrochromic device, namely two extraction circuits of the flexible circuit board can be respectively welded to the first area 21 and the conducting piece 7, and thus the welding extraction of the first extraction electrode and the second extraction electrode can be realized through one-time hot-press welding, the production process is greatly simplified, the production efficiency is improved, and the product yield is favorably improved. In order to avoid the occurrence of micro short circuit inside the electrochromic device, a second partition region 31 is further disposed on the electrochromic layer, so as to avoid that the first partition region 221 is filled with conductive substances or conductive particles and the like in the electrochromic layer, which causes partition failure of the first partition region 221. Through the preset first conductive piece 81 and the second conductive piece 82, when the first laminated piece and the second laminated piece are combined, the first conductive piece 81 and the second conductive piece 82 can be combined, the second conductive layer 6 can be conveniently and tightly connected with the second area 22, and therefore the second electrode led out from the second area 22 of the first conductive layer 2 can well supply power to the second conductive layer 6, the process is simple and convenient, and the production capacity is greatly improved. By adjusting the surface roughness of the first conductive member 81 and the second conductive member 82, the contact point of the opposite surfaces of the first conductive member 81 and the second conductive member 82 is increased, so that the contact tightness of the first conductive member 81 and the second conductive member 82 is improved, and the effectiveness of the electrical communication between the first conductive member 81 and the second conductive member 82 is ensured.
Example two
As shown in fig. 1, the present embodiment proposes an electrochromic device 100, and the electrochromic device 100 includes an electrode drawing region 101.
As shown in fig. 3, the electrochromic device 100 includes a first substrate layer 1, a first conductive layer 2, an electrochromic layer, a second conductive layer 6, and a second substrate layer 7, which are sequentially stacked; the electrochromic layer comprises an ion storage layer 5, an electrolyte layer 4 and a discoloring material layer 3 which are sequentially stacked, wherein the ion storage layer 5 is arranged on one side close to the first conducting layer 2. The first conductive layer 2 is made of ITO, and the first conductive layer 2 includes a first region 21 and a second region, and the conductive material of the second region is lost to form a first blocking area 221, that is, the first blocking area 221 and the second region of this embodiment 2 coincide.
In the electrode lead-out region 101 of the electrochromic device 100, a first conductive member 81 is disposed on the surface of the second region 22 away from the first substrate layer 1, a second conductive member 82 is disposed on the surface of the second conductive layer 6 away from the second substrate layer 7, and the first conductive member 81 and the second conductive member 82 are aligned; the surface roughness of the first conductive member 81 is 4 μm and the surface roughness of the second conductive member 82 is 4 μm. The first region 21 is connected with a first extraction electrode (not shown in the figure), and the second region is connected with a second extraction electrode (not shown in the figure); at least part of the side of the conductive member 8 is in contact with the electrochromic layer. The ion storage layer 5 is provided with a second partition area 31, in the preparation process, the ion storage layer 5 is coated on the surface of the first conductive layer 2 to form a first laminated member, the color change material layer 3 is coated on the surface of the first conductive layer 2 to form a second laminated member, an electrolyte material is added between the first laminated member and the second laminated member, and the first laminated member and the second laminated member are laminated in an involution manner. And then, a second partition area 31 is formed on the surface, far away from the ion storage layer 5, of the first substrate layer 1, the second partition area 31 penetrates through the first substrate layer 1, the first conductive layer 2 and the ion storage layer 5, the width of the second partition area 31 is 0.2mm, and the projection of the second partition area 31 on the first conductive layer 2 completely falls into the first partition area 221. The second partition 31 is free of filler material.
The electrochromic layer has a thickness of 40 μm, the first conductive member 81 has a thickness of 20 μm, and the second conductive member 82 has a thickness of 20 μm. The first substrate layer is made of flexible PET. The second substrate layer is made of ITO glass.
The electrochromic device of this embodiment is through setting up first partition zone 221 on first conducting layer 2, so that first conducting layer 2 divide into two regions that cut off each other, the conducting material of first region 21 and the electric intercommunication of second region can not mutually, and then draw forth first extraction electrode from first region 21, draw forth the second extraction electrode from the second region, make first extraction electrode and second extraction electrode all draw forth from electrochromic device's first conducting layer 2, can realize the welding to first extraction electrode and second extraction electrode through a hot-pressing welding like this, the production technology has been simplified greatly, the production efficiency is improved, and be favorable to improving the product yield. And a second partition area 31 is further formed on one surface, far away from the ion storage layer 5, of the first conducting layer 2, so that the processing is convenient, and the production efficiency is high. Through the preset first conductive piece 81 and the second conductive piece 82, when the first laminated piece and the second laminated piece are combined, the first conductive piece 81 and the second conductive piece 82 can be combined, the second conductive layer 6 can be conveniently and tightly connected with the second area 22, and therefore the second electrode led out from the second area 22 of the first conductive layer 2 can well supply power to the second conductive layer 6, the process is simple and convenient, and the production capacity is greatly improved. By adjusting the surface roughness of the first conductive member 81 and the second conductive member 82, the contact point of the opposite surfaces of the first conductive member 81 and the second conductive member 82 is increased, so that the contact tightness of the first conductive member 81 and the second conductive member 82 is improved, and the effectiveness of the electrical communication between the first conductive member 81 and the second conductive member 82 is ensured.
Alternatively, in other alternative embodiments of the second embodiment, the second blocking area 31 may further penetrate through part or all of the electrolyte layer 4 in the longitudinal direction, or further penetrate through the electrolyte layer 4 and part or all of the ion storage layer 5 in the longitudinal direction, on the basis of penetrating through the first substrate layer 1, the first conductive layer 2 and the ion storage layer 5.
EXAMPLE III
As shown in fig. 1, the present embodiment proposes an electrochromic device 100, and the electrochromic device 100 includes an electrode drawing region 101.
As shown in fig. 4, which is a cross-sectional view of the electrochromic device 100 of the present embodiment taken along the section of fig. 1A-a. The difference from the first embodiment is that the projection of the second isolation region 31 on the first conductive layer 2 falls entirely within the first isolation region 221. The surface roughness of the first conductive member 81 is 3 μm and the surface roughness of the second conductive member 82 is 4 μm. The electrochromic layer has a thickness of 30 μm, the first conductive member 81 has a thickness of 15 μm, and the second conductive member 82 has a thickness of 15 μm.
The electrochromic device of this embodiment has the same advantageous effects as those of the first embodiment.
Example four
As shown in fig. 1, the present embodiment proposes an electrochromic device 100, and the electrochromic device 100 includes an electrode drawing region 101.
The difference from the third embodiment is that, referring to fig. 5 and 6 in particular, the present embodiment further provides a first bus bar 9 on the first conductive layer and a second bus bar 10 on the second conductive layer 6, and the second conductive member 82 is a portion of an end of the second bus bar 10. The projection of the first bus bar 9 on the first conductive layer 2 and the projection of the second bus bar 10 on the first conductive layer 2 do not coincide with each other.
On the basis of the beneficial effects of the third embodiment, the electrochromic device of the present embodiment further improves the uniformity of voltage distribution of the first conductive layer 2 and the second conductive layer 6 by providing the first bus bar 9 and the second bus bar 10, so as to improve the color change speed and the color change uniformity of the electrochromic device. By using the second conductive member 82 as a part of the second bus bar 10, the second conductive member 82 does not need to be separately arranged, and the second conductive member 82 can be manufactured when the second bus bar 10 is manufactured, so that the processing steps are simplified, and the production capacity is improved. Furthermore, the distribution of the first bus bar 9 and the second bus bar 10 on the plane is further adjusted, so that the first bus bar 9 and the second bus bar 10 cannot be contacted up and down to cause short circuit failure of the electrochromic device. The embodiment greatly improves the color changing speed, the color changing uniformity and the product reliability of the electrochromic device.
EXAMPLE five
As shown in fig. 1, the present embodiment proposes an electrochromic device 100, and the electrochromic device 100 includes an electrode drawing region 101.
The difference from the first embodiment is that, referring to fig. 7 and 8, the surface resistance of the first conductive layer 2 is greater than the surface resistance of the second conductive layer 6, wherein the surface resistance of the first conductive layer 2 is 90 Ω, the surface resistance of the second conductive layer 6 is 45 Ω, the first conductive layer 2 is provided with a first bus bar 9, and the first bus bar 9 is not in contact with the electrochromic layer. In this embodiment, since the surface resistance of the second conductive layer 6 is small, no bus bar is provided on the second conductive layer 6. The first bus bar 9 is provided along the periphery of the first region 21, and is not provided at the periphery where the first region 21 and the second region 22 are adjacent. The color-changing material layer 3 is positioned at one side close to the first conductive layer 2, and the second partition area 31 is arranged on the color-changing material layer 3.
On the basis of the beneficial effects of the first embodiment, the electrochromic device of the present embodiment further matches the first conductive layer 2 with a higher surface resistance and the second conductive layer 6 with a lower surface resistance, wherein the light transmittance of the first conductive layer 2 with a higher surface resistance is higher, and the conductive speed of the second conductive layer 2 with a lower surface resistance is faster, so that the electrochromic device can vividly display the color of the electrochromic layer, and achieve the effects of rapid and uniform color change. And the first bus bar 9 is arranged on the first conductive layer 2 to improve the voltage distribution uniformity of the first conductive layer 2, thereby further improving the color change speed and color change uniformity of the electrochromic device. Since the first conductive layer 2 has a higher light transmittance, and the color of the electrochromic device is mainly displayed by the color-changing material layer 3, the present embodiment further sets the color-changing material layer 3 at a side close to the first conductive layer 2, and when a user looks from the outside of the first conductive layer 2, the color display effect of the electrochromic device is better.
EXAMPLE six
The difference from the fifth embodiment is that the ion storage layer is located on a side close to the first conductive layer, and the second blocking area is disposed in the ion storage layer. The surface resistance of the first conductive layer 2 was 90 Ω, and the surface resistance of the second conductive layer 6 was 30 Ω.
On the basis of the beneficial effects of the first embodiment, the electrochromic device of the present embodiment further matches the first conductive layer 2 with a higher surface resistance and the second conductive layer 6 with a lower surface resistance, wherein the light transmittance of the first conductive layer 2 with a higher surface resistance is higher, and the conductive speed of the second conductive layer 2 with a lower surface resistance is faster, so that the electrochromic device can vividly display the color of the electrochromic layer, and achieve the effects of rapid and uniform color change. And the first bus bar 9 is arranged on the first conductive layer 2 to improve the voltage distribution uniformity of the first conductive layer 2, thereby further improving the color change speed and color change uniformity of the electrochromic device.
EXAMPLE seven
In any of the first to sixth embodiments, the first substrate layer 11, the second substrate layer 12, and the sealing member 15 may be further provided.
Referring to fig. 9, a structural description is given by taking an example that a first substrate layer 11 and a second substrate layer 12 are further provided on the basis of the sixth embodiment, and details of the remaining embodiments are not repeated. Specifically, one surface of the first base layer 1, which is far away from the first conductive layer 2, is connected with the first substrate layer 11 through a first glue layer 13; the second base layer 7 is connected to the second base material layer 12 through a second adhesive layer 14 on a surface thereof remote from the second conductive layer 6. A seal 15 is provided along the circumferential side of the electrochromic layer. The sealing member 15 is arranged between the first base material layer 11 and the second base material layer 12, at least one side edge of the first base material layer 11 is longer than the first base layer 1, at least one side edge of the second base material layer 12 is longer than the second base layer 7, the projection of the outer side surface of the sealing member 15 on the first base material layer 11 is overlapped with the periphery of the first base material layer 11, and the projection of the outer side surface of the sealing member 15 on the second base material layer 12 is overlapped with the periphery of the second base material layer 12.
The first substrate layer 11 is glass, and the second substrate layer 12 is a flexible water-oxygen barrier film. The material of the first glue layer 13 may block uv light.
On the basis of the beneficial effects of the sixth embodiment, the electrochromic device of the embodiment further comprises the first substrate layer 11 and the second substrate layer 12, so that the protection of the electrochromic device can be improved, the mechanical structure strength of the electrochromic device can be improved, and the service life of the electrochromic device can be further prevented from being influenced by invasion of water, oxygen and the like in the external environment from the second substrate layer; and the sealing element 15 is filled between the first substrate layer 11 and the second substrate layer 12 and is positioned in the space area on the periphery side of the color-changing material layer, so that the sealing effect can be well achieved, the influence of water, oxygen and the like on the electrochromic layer is avoided, and the service life of the electrochromic device is prolonged. In this embodiment, the material of the first adhesive layer 13 is set to be an adhesive layer capable of blocking ultraviolet light, so that the material aging of the solid electrolyte layer can be slowed down, and the service life of the electrochromic device can be prolonged.
Example eight
An electronic device 200, see fig. 10, comprising an electrochromic device 100 according to any of the preceding embodiments one to eight. The first substrate layer 1 of the electrochromic device 100 is close to the side on which ambient light is incident.
The electronic device 200 of the embodiment, including the electrochromic device 100 of any of the above embodiments, has the advantages of low production cost, simple and convenient production process, high production efficiency, high product yield, and good product stability. When only from the incident ambient light of one side of electrochromic device 100, set up first stratum basale 1 in the incident side that is close to ambient light to be convenient for hinder, the material of allochroic material layer 3, thickness etc. through the face of adjusting the first conducting layer 2 that is close to first stratum basale 1 one side, make electronic equipment have better colour show effect, change colour fast and even allochroic effect.
The applicant states that the present invention is illustrated by the above examples of the process of the present invention, but the present invention is not limited to the above process steps, i.e. it is not meant 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 (11)
1. The electrochromic device is characterized by comprising a first substrate layer, a first conducting layer, an electrochromic layer, a second conducting layer and a second substrate layer which are sequentially stacked, wherein the electrochromic layer comprises a color-changing material layer, an electrolyte layer and an ion storage layer which are sequentially stacked;
the first conducting layer is made of conducting materials and comprises a first area and a second area, and conducting materials of the edge, adjacent to the first area, of the second area lack a preset width so as to form a first partition area;
a first conductive piece is arranged on one surface, far away from the first substrate layer, of the second area, a second conductive piece is arranged on one surface, far away from the second substrate layer, of the second conductive layer, and the first conductive piece and the second conductive piece are combined;
the first region is connected with a first extraction electrode, and the second region is connected with a second extraction electrode;
the electrochromic layer is provided with a second partition area, and the projection of the second partition area on the first conducting layer is at least partially overlapped with the first partition area.
2. The electrochromic device of claim 1, wherein at least portions of the sides of the first and second electrically conductive members are in contact with the electrochromic layer; wherein,
the color-changing material layer is positioned on one side close to the first conducting layer, the second partition area is arranged on the color-changing material layer, and the second partition area divides the color-changing material layer into two areas which are not connected with each other; or, the ion storage layer is located at one side close to the first conductive layer, the second partition area is arranged on the ion storage layer, and the second partition area divides the ion storage layer into two areas which are not connected with each other.
3. The electrochromic device according to claim 2, wherein said second partition region is filled with an electrolyte material identical to a material of said electrolyte layer, so that said electrolyte layer is in contact with said first partition region through the electrolyte material in said second partition region.
4. The electrochromic device of claim 1, wherein said first substrate layer and/or said second substrate layer is a flexible substrate layer.
5. The electrochromic device of claim 1, wherein a surface roughness of said first electrically conductive member is 3 μ ι η or more, and/or a surface roughness of said second electrically conductive member is 3 μ ι η or more.
6. The electrochromic device of claim 1, wherein a first bus bar is disposed on said first conductive layer.
7. The electrochromic device according to claim 6, wherein a second bus bar is provided on said second conductive layer, said second conductive member being a partial portion of said second bus bar, or said second conductive member being connected to said second bus bar; the projection of the first bus bar on the first conductive layer and the projection of the second bus bar on the first conductive layer are not overlapped with each other.
8. The electrochromic device of claim 6, wherein the first conductive layer has a surface resistance greater than a surface resistance of the second conductive layer, the first bus bar being disposed along a perimeter of the first region.
9. The electrochromic device of claim 1, wherein the first conductive layer has a higher sheet resistance than the second conductive layer, and wherein the layer of color changing material is located on a side adjacent to the first conductive layer.
10. The electrochromic device according to claim 1, wherein a surface of the first substrate layer remote from the first conductive layer is connected to the first substrate layer through a first adhesive layer, and the first adhesive layer is made of a material having an ultraviolet blocking effect.
11. An electronic device comprising an electrochromic device according to any one of claims 1 to 10.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110084919.3A CN114815431A (en) | 2021-01-22 | 2021-01-22 | Electrochromic device and electronic equipment |
| EP21863679.3A EP4202542A1 (en) | 2020-09-04 | 2021-09-03 | Electrochromic device and electronic device |
| PCT/CN2021/116339 WO2022048615A1 (en) | 2020-09-04 | 2021-09-03 | Electrochromic device and electronic device |
| US18/117,684 US20230221608A1 (en) | 2020-09-04 | 2023-03-06 | Electrochromic device and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110084919.3A CN114815431A (en) | 2021-01-22 | 2021-01-22 | Electrochromic device and electronic equipment |
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| CN114815431A true CN114815431A (en) | 2022-07-29 |
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| CN202110084919.3A Pending CN114815431A (en) | 2020-09-04 | 2021-01-22 | Electrochromic device and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115185130A (en) * | 2022-08-16 | 2022-10-14 | 福耀玻璃工业集团股份有限公司 | Zoned electrochromic devices |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115185130A (en) * | 2022-08-16 | 2022-10-14 | 福耀玻璃工业集团股份有限公司 | Zoned electrochromic devices |
| CN115185130B (en) * | 2022-08-16 | 2024-02-20 | 福耀玻璃工业集团股份有限公司 | Partitioned electrochromic device |
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