Electrochromic device and electronic equipment

Abstract

The present invention provides an electrochromic device and electronic device. The electrochromic device includes a first substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer, and a second substrate layer stacked in sequence. The first conductive layer is composed of a conductive material and includes a first region and a second region. The conductive material of the second region adjacent to the first region is missing a preset width to form a first isolation region. A first conductive member is provided on a side of the second region away from the first substrate layer, and a second conductive member is provided on a side of the second conductive layer away from the second substrate layer, and the first conductive member and the second conductive member are aligned. The first region is connected to a first extraction electrode, and the second region is connected to a second extraction electrode. The electrochromic layer is provided with a second isolation region, and the projection of the second isolation region on the first conductive layer at least partially overlaps with the first isolation region. The electrochromic device of the present invention greatly simplifies the production process, improves production efficiency, and is conducive to improving product yield.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrochromism and relates to an electrochromism device and electronic equipment. Background Art

[0002] The optical properties of electrochromic devices can undergo stable and reversible color changes under the action of an external electric field. They are widely used in the automotive, construction and consumer electronics fields.

[0003] In the prior art, when the electrodes of an electrochromic device are led out, the electrode leads connected to the first conductive layer and the electrode leads connected to the second conductive layer are usually led out from the first base layer and the second base layer respectively. This requires two hot pressing welding operations. For example, after welding the electrode leads of the first base layer, the electrochromic device is flipped over and the electrode leads of the second base layer are welded. This process is complicated, not conducive to automated production, has low work efficiency, and is not conducive to improving the yield. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an electrochromic device and an electronic device. The electrochromic device of the present invention only needs to be hot-pressed once from a base layer to complete the electrode extraction process. The process is simple, the production efficiency is greatly improved, and it is conducive to improving the product yield.

[0005] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides an electrochromic device comprising a first substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer, and a second substrate layer stacked in sequence; the electrochromic layer comprises a color-changing material layer, an electrolyte layer, and an ion storage layer stacked in sequence;

[0007] The first conductive layer is made of a conductive material, and includes a first region and a second region, wherein the conductive material of the side of the second region adjacent to the first region is missing a preset width to form a first isolation region;

[0008] A first conductive member is provided on a side of the second region away from the first base layer, and a second conductive member is provided on a side of the second conductive layer away from the second base layer, wherein the first conductive member and the second conductive member are aligned;

[0009] The first region is connected to a first extraction electrode, and the second region is connected to a second extraction electrode;

[0010] The electrochromic layer is provided with a second partition area, and a projection of the second partition area on the first conductive layer at least partially overlaps with the first partition area.

[0011] The conductive materials of the first and second conductive layers are formed from one or at least two of ITO (indium tin oxide), zinc aluminum oxide, fluorine-doped tin oxide, silver nanowires, graphene, carbon nanotubes, metal meshes, and silver nanoparticles. The material of the color-changing material layer can be specifically selected from color-changing materials known in the art that can form solid thin films, such as inorganic materials such as NiO, WO3, Nb2O5, and TiO2; organic materials such as polythiophene derivatives and copolymer systems; and metal conjugated systems such as Prussian blue. The electrolyte layer is preferably a solid electrolyte layer, formed by solidifying an electrolyte solution. The electrolyte layer material comprises a mixture of a polymer, a metal ion salt, and an additive. The material of the ion storage layer comprises a metal oxide formed from one or at least two metal elements from Groups 4-12, a mixture of metal oxides, or a metal oxide doped with any other metal oxide. The materials of the first and second substrate layers include polyethylene terephthalate, cycloolefin copolymer, cellulose triacetate, or glass. The first lead-out electrode and the second lead-out electrode are made of conductive materials, such as metal, alloy, wire, flexible circuit board, etc.

[0012] The present invention provides a first isolation region on the first conductive layer so that the first conductive layer is divided into two mutually isolated regions, and the conductive material of the first region and the conductive material of the second region are not electrically connected to each other, thereby leading to a first lead electrode from the first region and a second lead electrode from the second region, so that the first lead electrode and the second lead electrode are both led out from the first conductive layer of the electrochromic device. In this way, a flexible circuit board with two integrated lead lines can be used during welding, and a single hot pressing welding is performed from one side of the first conductive layer of the electrochromic device to simultaneously realize the welding and leading of the first lead electrode and the second lead electrode, which greatly simplifies the production process, improves production efficiency and product yield, and is conducive to minimizing the area of the electrode lead region where color change (i.e., color / transmittance change) cannot occur. In order to avoid the occurrence of micro-short circuits inside the electrochromic device, a second isolation region is further provided on the electrochromic layer to avoid the conductive material or conductive particles in the electrochromic layer from filling the first isolation region, causing the isolation failure of the first isolation region. When preparing the electrochromic device of the present invention, first prepare a first stack and a second stack separately, wherein the first stack includes a first substrate layer, a first conductive layer and a color-changing material layer stacked in sequence, and the second stack includes a second substrate layer, a second conductive layer and an ion storage layer stacked in sequence, or the first stack includes a first substrate layer, a first conductive layer and an ion storage layer stacked in sequence, and the second stack includes a second substrate layer, a second conductive layer and a color-changing material layer stacked in sequence; then an electrolyte layer is set between the first stack and the second stack, and the first stack and the second stack are aligned. By pre-arranging the above-mentioned first conductive member and the second conductive member, when the first stack and the second stack are aligned, the first conductive member and the second conductive member can be aligned, and the second conductive layer and the second region can be tightly connected, thereby ensuring that the second electrode drawn from the second region of the first conductive layer can well supply power to the second conductive layer. The process is simple and the production capacity is greatly improved.

[0013] Preferably, at least part of the side surfaces of the first conductive member and the second conductive member are in contact with the electrochromic layer; wherein the color-changing material layer is located on a side close to the first conductive layer, the second partition region is provided in the color-changing material layer, and the second partition region divides the color-changing material layer into two areas that are not connected to each other; or, the ion storage layer is located on a side close to the first conductive layer, the second partition region is provided in the ion storage layer, and the second partition region divides the ion storage layer into two areas that are not connected to each other.

[0014] The side surfaces of the first and second conductive members of the present invention are at least partially in contact with the electrochromic layer, so that there is no gap in the electrochromic layer material between the first and second conductive members and the electrochromic layer, thereby reducing the area of the non-discoloring region. It should be noted that the region lacking the electrochromic layer material will form a non-discoloring region. The inventors of the present invention have discovered that the materials of the color-changing material layer and the ion storage layer have a very low electronic conductivity under certain circumstances. Therefore, if the materials of the color-changing material layer and the ion storage layer are filled into the first isolation region, the conductive materials of the first and second regions can still be connected through the color-changing material layer or the ion storage layer filled in the first isolation region, thereby causing an internal micro-short circuit. In addition, the first isolation region may also be filled with conductive particles during the process, thereby causing an internal micro-short circuit. Therefore, the present invention further improves the product stability and service life of the electrochromic device of the present invention by providing a second isolation region on the ion storage layer or the color-changing material layer.

[0015] In a possible implementation, a second isolation region is provided on a side of the color-changing material layer or the ion storage layer away from the first conductive layer;

[0016] In another possible implementation, a second partition region is opened on a side of the first substrate layer away from the color-changing material layer or the ion storage layer.

[0017] Preferably, the second partition region is filled with the same electrolyte material as that 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.

[0018] The inventors of the present invention discovered that the material of the electrolyte layer is an electronic insulator. Therefore, the present invention further prevents the occurrence of internal micro-short circuits by filling the second isolation region with electrolyte material, thereby further improving the product stability and service life of the electrochromic device of the present invention.

[0019] Preferably, the first substrate layer and / or the second substrate layer is a flexible substrate layer.

[0020] The flexible substrate material includes, but is not limited to, any one of polyethylene terephthalate (PET), cycloolefin copolymer, or triacetyl cellulose, or a combination of at least two thereof. Typical but non-limiting combinations include a combination of PET and cycloolefin copolymer, a combination of cycloolefin copolymer and triacetyl cellulose, a combination of PET and triacetyl cellulose, or a combination of PET, cycloolefin copolymer, and triacetyl cellulose. Preferably, the thickness of the plastic substrate material is 20-500 μm, for example, 20 μm, 50 μm, 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, or 500 μm, but is not limited to the listed values. Other values not listed within the numerical range are also applicable.

[0021] The present invention reduces the precision requirements on the thickness of the first conductive member and the second conductive member by setting at least one of the first substrate layer and the second substrate layer as a bendable flexible substrate layer. When the first conductive member or the second conductive member is slightly thicker or thinner, the second conductive layer and the second region can still be tightly connected, thereby reducing the possibility of disconnection between the first conductive member and the second conductive member, avoiding short circuit of the electrochromic device, and improving the feasibility of the process and the product yield of the electrochromic device.

[0022] 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.

[0023] The present invention increases the contact points of the mating surfaces of the first conductive member and the second conductive member by setting the surface roughness of the first conductive member and the second conductive member, thereby improving the contact tightness between the first conductive member and the second conductive member, ensuring the effectiveness of the electrical connectivity between the first conductive member and the second conductive member, and thus ensuring that the second electrode led out from the second area can well supply power to the second conductive layer.

[0024] Preferably, a first bus bar is provided on the first conductive layer.

[0025] In the present invention, the first bus bar is used to improve the voltage distribution uniformity of the first conductive layer, thereby improving the color change speed and color change uniformity of the electrochromic device.

[0026] Preferably, a second bus bar is arranged on the second conductive layer, the second conductive member is a local part 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 do not overlap with each other.

[0027] In the present invention, the second busbar is used to improve the uniformity of the voltage distribution of the second conductive layer, thereby improving the color change speed and color change uniformity of the electrochromic device. By making the second conductive member a part of the second busbar, or extending the second busbar to the second conductive member, there is no need to set up the second conductive member separately. The second conductive member can be made when the second busbar is made, which simplifies the processing steps and improves production capacity. By adjusting the distribution of the first busbar and the second busbar on the plane, the first busbar and the second busbar will not come into contact with each other in the direction from the first conductive layer to the second conductive layer, because once the first busbar and the second busbar come into contact, it will cause the electrochromic device to short-circuit and fail. Through this design, the present invention greatly improves the product reliability of the electrochromic device.

[0028] Preferably, the surface resistance of the first conductive layer is greater than the surface resistance of the second conductive layer, and the first bus bar is arranged along the periphery of the first region.

[0029] In the present invention, when the conductive materials of the first conductive layer and the second conductive layer are the same, the greater the surface resistance, the smaller the thickness of the conductive material, and the higher the light transmittance of the conductive layer, which can improve the color display effect of the electrochromic layer, but it will also cause uneven voltage distribution on the conductive layer, reducing the color change rate and color change uniformity of the electrochromic layer. Therefore, the present invention cooperates to achieve the effect of vividly displaying the color of the electrochromic layer and quickly and uniformly changing the color of the electrochromic device by matching the first conductive layer with a higher surface resistance and the second conductive layer with a lower surface resistance. Since the surface resistance of the first conductive layer is large, it is necessary to set a first bus bar on the first conductive layer. The first bus bar is used to improve the uniformity of the voltage distribution of the first conductive layer. The first bus bar is set along the periphery of the first area of the electrochromic device, thereby ensuring that the electrochromic device has as large a color change area as possible while improving the color change speed and color change uniformity of the electrochromic device. The first bus bar may not be set around the periphery of the first area adjacent to the second area to reduce the possibility of short circuit. Because the second conductive layer has a low surface resistance, the second busbar can be omitted from the second conductive layer, allowing only the second conductive member to be provided, further reducing product costs. This design significantly improves the color display of the electrochromic layer, as well as the reliability, color change speed, and color change uniformity of the electrochromic device.

[0030] Optionally, the first bus bar and the electrochromic layer are not in contact, thereby preventing the metal of the first bus bar from participating in the redox reaction of the electrochromic device. When the surface of the material of the first bus bar is passivated or covered with an insulating layer, the first bus bar and the electrochromic layer may also be in contact.

[0031] 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, for example, it can be 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 listed values, and other unlisted values within the numerical range are also applicable.

[0032] In the present invention, within the above-mentioned range of surface resistance ratio, a first bus bar is provided on the first conductive layer, and no bus bar is provided on the second conductive layer, which can better coordinately realize the electrochromic device to vividly display the color of the electrochromic layer and achieve the effect of rapid and uniform color change.

[0033] Preferably, the surface resistance of the first conductive layer is greater than the surface resistance of the second conductive layer, and the color-changing material layer is located on a side close to the first conductive layer.

[0034] By placing the color-changing material layer near the side of the first conductive layer, the present invention improves the color display effect of the electrochromic device when the user views it from the outside of the first conductive layer. Preferably, the thickness of the color-changing material layer is 1nm-10μm, for example, it can be 1nm, 5nm, 10nm, 50nm, 80nm, 100nm, 200nm, 500nm, 1μm, 5μm, 10μm, etc. A moderate increase in the thickness of the color-changing material layer is conducive to deepening the color effect of the electrochromic device. Preferably, the thickness of the solid electrolyte layer is 5-200μm; for example, it can be 5μm, 8μm, 10μm, 20μm, 30μm, 40μm, 50μm, 60μm, 70μm, 80μm, 90μm, 100μm, 110μm, 120μm, 130μm, 150μm, 160μm, 180μm or 200μm, etc. Preferably, the thickness of the ion storage layer is 1 nm-10 μm, for example, 1 nm, 5 nm, 10 nm, 50 nm, 80 nm, 100 nm, 200 nm, 500 nm, 1 μm, 5 μm, 10 μm, etc.

[0035] Optionally, a sealing member is further included, and the sealing member is provided along the periphery of the electrochromic layer. In the present invention, by providing the sealing member, the periphery of the electrochromic layer can be sealed to prevent the intrusion of water vapor and the like, thereby increasing the service life of the electrochromic device.

[0036] Preferably, a side of the first base layer away from the first conductive layer is connected to the first substrate layer via a first adhesive layer, and the first adhesive layer is made of a material having UV blocking effect.

[0037] The first substrate layer of the present invention can be made of flexible materials and / or rigid materials, wherein the rigid material can be selected from glass, hard plastic, etc., and the flexible material can include but is not limited to any one of polyethylene terephthalate (PET), cycloolefin copolymer or triacetyl cellulose or a combination of at least two thereof. Preferably, it is a transparent material. By providing the first substrate layer, the protection of the electrochromic device can be improved, the mechanical structural strength of the electrochromic device can be improved, and the invasion of water and oxygen from the external environment through the first base layer can be further avoided to affect the service life of the electrochromic device. Since long-term environmental ultraviolet radiation can cause bubbling of the adhesive layer, by using an adhesive layer material that can block ultraviolet light for the first adhesive layer facing the environment, bubbling between the internal layers of the electrochromic device can be avoided, thereby improving the service life of the electrochromic device.

[0038] In a second aspect, the present invention further provides an electronic device comprising the above-mentioned electrochromic device.

[0039] The electronic device of the present invention including the electrochromic device has low production cost, simple production process, high production efficiency, high product yield and good product stability.

[0040] Preferably, the first substrate layer of the electrochromic device is close to a side where ambient light is incident.

[0041] In the electronic device of the present invention, when ambient light is incident only from one side of the electrochromic device, the first substrate layer is positioned closer to the incident side of the ambient light. This facilitates adjusting the first conductive layer, the color-changing material layer, and the like closer to the first substrate layer, thereby enabling the electronic device to achieve better color display, faster color change, and more uniform color change.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The present invention provides a first isolation region on the first conductive layer to divide the first conductive layer into two isolated regions. The conductive material in the first region and the conductive material in the second region are not electrically connected to each other. A first lead-out electrode is then drawn from the first region, and a second lead-out electrode is drawn from the second region. This allows the first lead-out electrode and the second lead-out electrode to be both drawn from the first conductive layer of the electrochromic device. This allows the first lead-out electrode and the second lead-out electrode to be welded together in one hot pressing process, greatly simplifying the production process, improving production efficiency, and facilitating improved product yield. In order to avoid the occurrence of micro-short circuits within the electrochromic device, a second isolation region is further provided on the electrochromic layer to prevent the conductive material or conductive particles in the electrochromic layer from filling the first isolation region, causing the isolation of the first isolation region to fail. By pre-setting the first conductive member and the second conductive member, when the first stack and the second stack are aligned, the first conductive member and the second conductive member can be aligned, and the electrical connection between the second conductive layer and the second region can be easily achieved, thereby ensuring that the second electrode led out from the second region of the first conductive layer can well supply power to the second conductive layer. The process is simple and the production capacity is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Schematic diagram of the top view of the electrochromic device provided in Embodiments 1 to 8 of the present invention;

[0045] Figure 2 A schematic diagram of the cross-sectional structure of the electrochromic device provided in the first embodiment of the present invention taken along the AA cross-sectional direction;

[0046] Figure 3 A schematic diagram of the cross-sectional structure of the electrochromic device provided in the second embodiment of the present invention along the AA cross-sectional direction;

[0047] Figure 4 A schematic cross-sectional structure diagram of the electrochromic device provided in the third embodiment of the present invention, taken along the AA cross-sectional direction;

[0048] Figure 5 A schematic cross-sectional structure diagram of the electrochromic device provided in the fourth embodiment of the present invention, taken along the BB cross-sectional direction;

[0049] Figure 6 A schematic cross-sectional structure diagram of the electrochromic device provided in the fourth embodiment of the present invention, taken along the CC cross-sectional direction;

[0050] Figure 7 A schematic diagram of the cross-sectional structure of the electrochromic device provided in the fifth embodiment of the present invention, taken along the BB cross-sectional direction;

[0051] Figure 8 A schematic cross-sectional structure diagram of the electrochromic device provided in the CC cross-sectional direction according to the fifth embodiment of the present invention;

[0052] Figure 9 A schematic cross-sectional structure diagram of the electrochromic device provided in the seventh embodiment of the present invention, taken along the BB cross-sectional direction;

[0053] Figure 10 This is a structural diagram of an electronic device provided in Example 8 of the present invention.

[0054] Among them, 100: electrochromic device; 101: electrode lead-out area; 200: electronic device; 1: first substrate layer; 2: first conductive layer; 3: color-changing material layer; 4: electrolyte layer; 5: ion storage layer; 6: second conductive layer; 7: second substrate layer; 81: first conductive member; 82: second conductive member; 9: first bus bar; 10: second bus bar; 11: first substrate layer; 12: second substrate layer; 13: first adhesive layer; 14: second adhesive layer; 15: sealing member; 21: first area; 22: second area; 221: first partition area; 31: second partition area. DETAILED DESCRIPTION

[0055] The present invention will be described in further detail below with reference to the accompanying drawings and examples. It is particularly noted that the following examples are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Similarly, the following examples are only some embodiments of the present invention and are not intended to be complete. All other embodiments obtained by those of ordinary skill in the art without creative work are intended to fall within the scope of protection of the present invention.

[0056] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0057] Example 1

[0058] like Figure 1 As shown, this embodiment provides an electrochromic device 100 , which includes an electrode lead-out region 101 .

[0059] like Figure 2As shown, 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 stacked in sequence. The electrochromic layer includes a color-changing material layer 3, an electrolyte layer 4, and an ion storage layer 5 stacked in sequence. The color-changing material layer 3 is disposed on a side adjacent to the first conductive layer 2. The first conductive layer 2 is made of the conductive material ITO and includes a first region 21 and a second region 22. The conductive material of the second region 22 is missing from the edge adjacent to the first region 21 by a predetermined width to form a first isolation region 221; the predetermined width is 0.1 mm.

[0060] In the electrode extraction region 101 of the electrochromic device 100, a first conductive member 81 is provided on the side of the second region 22 away from the first substrate layer 1, and a second conductive member 82 is provided on the side of the second conductive layer 6 away from the second substrate layer 7. The first conductive member 81 and the second conductive member 82 are aligned; the surface roughness of the first conductive member 81 is 3μm, and the surface roughness of the second conductive member 82 is 2μm. The first region 21 is connected to the first extraction electrode (not shown in the figure), and the second region 22 is connected to the second extraction electrode (not shown in the figure); at least a portion of the side surface of the conductive member 8 is in contact with the electrochromic layer. The color-changing material layer 3 is provided with a second barrier region 31. During the preparation process, the color-changing material layer 3 is applied to the surface of the first conductive layer 2 to form a first laminate. The second barrier region 31 is then formed on the side of the color-changing material layer 3 away from the first conductive layer 2. The width of the second barrier region 31 is 0.2 mm. The projection of the second barrier region 31 on the first conductive layer 2 partially overlaps with the first barrier region 221, but partially does not overlap. A second laminate is prepared, comprising a second base layer 7, a second conductive layer 6, and an ion storage layer 5 stacked in sequence.

[0061] Electrolyte material is added between the first stack and the second stack, and the first stack and the second stack are laminated together, so that the second partition area 31 is filled with the same electrolyte material as the electrolyte layer 4, and the electrolyte layer 4 is in contact with the first partition area 221 through the electrolyte material in the second partition area 31.

[0062] The thickness of the electrochromic layer is 50 μm, the thickness of the first conductive member is 25 μm, and the thickness of the second conductive member is 25 μm. The material used for the first substrate layer is flexible PET. The material used for the second substrate layer is flexible PET.

[0063] The electrochromic device of this embodiment is provided with a first isolation area 221 on the first conductive layer 2 so that the first conductive layer 2 is divided into two areas isolated from each other. The conductive material of the first area 21 and the conductive material of the second area 22 are not electrically connected to each other, and then the first lead-out electrode is led out from the first area 21, and the second lead-out electrode is led out from the second area 22, so that the first lead-out electrode and the second lead-out electrode are both led out from the first conductive layer 2 of the electrochromic device. When welding, a flexible circuit board with two integrated lead-out circuits can be used. By performing a single hot pressing welding from one side of the first conductive layer of the electrochromic device, the two lead-out circuits of the flexible circuit board can be respectively welded to the first area 21 and the conductive member 7 at the same time. In this way, the welding and leading of the first lead-out electrode and the second lead-out electrode can be realized by a single hot pressing welding, which greatly simplifies the production process, improves production efficiency, and is conducive to improving product yield. In order to avoid the occurrence of micro-short circuits within the electrochromic device, a second isolation region 31 is further provided on the electrochromic layer to prevent the conductive material or conductive particles in the electrochromic layer from filling the first isolation region 221, causing the isolation of the first isolation region 221 to fail. By pre-setting the first conductive member 81 and the second conductive member 82, when the first stack and the second stack are aligned, the first conductive member 81 and the second conductive member 82 can be aligned, which can easily connect the second conductive layer 6 and the second region 22, thereby ensuring that the second electrode drawn from the second region 22 of the first conductive layer 2 can effectively supply power to the second conductive layer 6. This simplifies the process and greatly improves production capacity. By adjusting the surface roughness of the first conductive member 81 and the second conductive member 82, the contact points of the aligned surfaces of the first conductive member 81 and the second conductive member 82 are increased, thereby improving the contact tightness of the first conductive member 81 and the second conductive member 82, and ensuring the effectiveness of the electrical connectivity between the first conductive member 81 and the second conductive member 82.

[0064] Example 2

[0065] like Figure 1 As shown, this embodiment provides an electrochromic device 100 , which includes an electrode lead-out region 101 .

[0066] like Figure 3 As shown, 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 stacked in sequence; the electrochromic layer includes an ion storage layer 5, an electrolyte layer 4, and a color-changing material layer 3 stacked in sequence, with the ion storage layer 5 disposed on a side close to the first conductive layer 2. The first conductive layer 2 is made of a conductive material, ITO, and includes a first region 21 and a second region. The conductive material in the second region is missing to form a first isolation region 221, i.e., the first isolation region 221 and the second region of this embodiment 2 overlap.

[0067] In the electrode lead-out region 101 of the electrochromic device 100, a first conductive member 81 is provided on the side of the second region 22 away from the first substrate layer 1, and a second conductive member 82 is provided on the side 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 4μm, and the surface roughness of the second conductive member 82 is 4μm. The first region 21 is connected to the first lead-out electrode (not shown in the figure), and the second region is connected to the second lead-out electrode (not shown in the figure); at least part of the side surface of the conductive member 8 is in contact with the electrochromic layer. The ion storage layer 5 is provided with a second partition region 31. During the preparation process, the ion storage layer 5 is coated on the surface of the first conductive layer 2 to form a first stack, and the color-changing material layer 3 is coated on the surface of the first conductive layer 2 to form a second stack. Then, an electrolyte material is added between the first stack and the second stack, and the first stack and the second stack are aligned and laminated. A second isolation region 31 is formed on a side of the first substrate layer 1 away from the ion storage layer 5. The second isolation region 31 extends through the first substrate layer 1, the first conductive layer 2, and the ion storage layer 5. The width of the second isolation region 31 is 0.2 mm, and the projection of the second isolation region 31 on the first conductive layer 2 falls entirely within the first isolation region 221. No filler is present in the second isolation region 31.

[0068] The thickness of the electrochromic layer is 40 μm, the thickness of the first conductive member 81 is 20 μm, and the thickness of the second conductive member 82 is 20 μm. The material used for the first substrate layer is flexible PET. The material used for the second substrate layer is ITO glass.

[0069] The electrochromic device of this embodiment is provided with a first isolation region 221 on the first conductive layer 2, so that the first conductive layer 2 is divided into two mutually isolated regions. The conductive material of the first region 21 and the second region are not electrically connected to each other, and then the first extraction electrode is led out from the first region 21, and the second extraction electrode is led out from the second region, so that the first extraction electrode and the second extraction electrode are both led out from the first conductive layer 2 of the electrochromic device. In this way, the first extraction electrode and the second extraction electrode can be welded by a single hot pressing welding, which greatly simplifies the production process, improves production efficiency, and is conducive to improving product yield. Further, a second isolation region 31 is provided on the side of the first conductive layer 2 away from the ion storage layer 5, which is convenient for processing and has high production efficiency. The pre-set first and second conductive members 81, 82 are readily aligned when the first and second laminates are aligned, conveniently and tightly connecting the second conductive layer 6 and the second region 22. This ensures that the second electrode extending from the second region 22 of the first conductive layer 2 can effectively power the second conductive layer 6. This simplifies the process and significantly improves production capacity. By adjusting the surface roughness of the first and second conductive members 81, 82, the number of contact points between the aligned surfaces of the first and second conductive members 81, 82 is increased, thereby enhancing the tightness of contact between the first and second conductive members 81, 82 and ensuring effective electrical connectivity between the first and second conductive members 81, 82.

[0070] Optionally, in other alternative embodiments of the second embodiment, the second isolation region 31 can further penetrate part or all of the electrolyte layer 4 in the longitudinal direction on the basis of penetrating the first substrate layer 1, the first conductive layer 2 and the ion storage layer 5, or further penetrate the electrolyte layer 4 and part or all of the ion storage layer 5 in the longitudinal direction.

[0071] Example 3

[0072] like Figure 1 As shown, this embodiment provides an electrochromic device 100 , which includes an electrode lead-out region 101 .

[0073] like Figure 4 As shown, the electrochromic device 100 of this embodiment is Figure 1 Cross-sectional view along section AA. This differs from Example 1 in that the projection of the second blocking region 31 on the first conductive layer 2 entirely falls within the first blocking 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 thickness of the electrochromic layer is 30 μm, the thickness of the first conductive member 81 is 15 μm, and the thickness of the second conductive member 82 is 15 μm.

[0074] The electrochromic device of this embodiment has the same beneficial effects as those of the first embodiment.

[0075] Example 4

[0076] like Figure 1 As shown, this embodiment provides an electrochromic device 100 , which includes an electrode lead-out region 101 .

[0077] The difference from the third embodiment is that, see Figure 5 and Figure 6 In this embodiment, a first bus bar 9 is further provided on the first conductive layer and a second bus bar 10 is provided on the second conductive layer 6. The second conductive member 82 is a portion of the 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 overlap.

[0078] The electrochromic device of this embodiment, on the basis of having the beneficial effects of Example 3, further improves the uniformity of the voltage distribution of the first conductive layer 2 and the second conductive layer 6 by providing a first bus bar 9 and a second bus bar 10, thereby improving the color change speed and color change uniformity of the electrochromic device. By making the second conductive member 82 a part of the second bus bar 10, there is no need to provide the second conductive member 82 separately. The second conductive member 82 can be manufactured when the second bus bar 10 is manufactured, which simplifies the processing steps and improves production capacity. In addition, by further adjusting the distribution of the first bus bar 9 and the second bus bar 10 on the plane, the first bus bar 9 and the second bus bar 10 will not come into contact with each other up and down, thereby causing a short circuit failure of the electrochromic device. This embodiment greatly improves the color change speed, color change uniformity and product reliability of the electrochromic device.

[0079] Example 5

[0080] like Figure 1 As shown, this embodiment provides an electrochromic device 100 , which includes an electrode lead-out region 101 .

[0081] The difference from the first embodiment is that, see Figure 7 and Figure 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 90Ω, and the surface resistance of the second conductive layer 6 is 45Ω. A first bus bar 9 is provided on the first conductive layer 2, 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 relatively 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 on the periphery adjacent to the first region 21 and the second region 22. The color-changing material layer 3 is located on the side close to the first conductive layer 2, and the second partition area 31 is provided on the color-changing material layer 3.

[0082] The electrochromic device of this embodiment, on the basis of having the beneficial effects of the first 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 first conductive layer 2 with a higher surface resistance has a higher light transmittance and the second conductive layer 2 with a lower surface resistance has a faster conduction speed, thereby synergistically achieving the electrochromic device to vividly display the color of the electrochromic layer and the effect of rapid and uniform color change. A first bus bar 9 is provided on the first conductive layer 2 to improve the uniformity of the voltage distribution 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, the color of the electrochromic device is mainly displayed by the color-changing material layer 3. Therefore, the color-changing material layer 3 is further provided on the side close to the first conductive layer 2 in this embodiment. When the user views from the outside of the first conductive layer 2, the color display effect of the electrochromic device is better.

[0083] Example 6

[0084] The difference from the fifth embodiment is that the ion storage layer is located on the side close to the first conductive layer, and the second isolation region is provided in the ion storage layer. The surface resistance of the first conductive layer 2 is 90Ω, and the surface resistance of the second conductive layer 6 is 30Ω.

[0085] The electrochromic device of this embodiment, while achieving the beneficial effects of the first embodiment, further achieves the effect of vividly displaying the electrochromic layer color and rapidly and uniformly changing color by matching a first conductive layer 2 having a higher sheet resistance with a second conductive layer 6 having a lower sheet resistance. The first conductive layer 2 having a higher sheet resistance has a higher light transmittance, while the second conductive layer 2 having a lower sheet resistance has a faster conductivity. Furthermore, a first bus bar 9 is provided on the first conductive layer 2 to improve the uniformity of the voltage distribution of the first conductive layer 2, thereby further improving the color change speed and color change uniformity of the electrochromic device.

[0086] Example 7

[0087] On the basis of any one of the aforementioned embodiments 1 to 6, a first substrate layer 11 , a second substrate layer 12 and a sealing member 15 may be further provided.

[0088] See also Figure 9 , the structure is described by taking the example of further providing a first substrate layer 11 and a second substrate layer 12 on the basis of Example 6, and the other embodiments are not described one by one. Specifically, the side of the first substrate layer 1 away from the first conductive layer 2 is connected to the first substrate layer 11 through a first adhesive layer 13; the side of the second substrate layer 7 away from the second conductive layer 6 is connected to the second substrate layer 12 through a second adhesive layer 14. The seal 15 is arranged along the circumference of the electrochromic layer. The seal 15 is arranged between the first substrate layer 11 and the second substrate layer 12, at least one side edge of the first substrate layer 11 is longer than the first substrate layer 1, and at least one side edge of the second substrate layer 12 is longer than the second substrate layer 7. The projection of the outer side of the seal 15 on the first substrate layer 11 coincides with the outer periphery of the first substrate layer 11, and the projection of the outer side of the seal 15 on the second substrate layer 12 coincides with the outer periphery of the second substrate layer 12.

[0089] The first substrate layer 11 is glass, the second substrate layer 12 is a flexible water and oxygen barrier film, and the material of the first adhesive layer 13 can block ultraviolet light.

[0090] The electrochromic device of this embodiment, while having the beneficial effects of Example 6, further comprises a first substrate layer 11 and a second substrate layer 12, thereby improving protection of the electrochromic device, enhancing the mechanical strength of the electrochromic device, and further preventing water and oxygen from invading the second substrate layer and affecting the service life of the electrochromic device. Furthermore, a sealant 15 is provided between the first substrate layer 11 and the second substrate layer 12, and is located in the space surrounding the color-changing material layer, thereby effectively sealing the electrochromic layer and preventing water and oxygen from affecting the electrochromic layer, thereby improving the service life of the electrochromic device. Furthermore, by configuring the first adhesive layer 13 to be a layer that blocks ultraviolet light, this embodiment can slow down the aging of the solid electrolyte layer and improve the service life of the electrochromic device.

[0091] Example 8

[0092] An electronic device 200, see Figure 10 , comprising any one of the electrochromic devices 100 of the aforementioned embodiments 1 to 8. The first substrate 1 of the electrochromic device 100 is close to the side where the ambient light is incident.

[0093] The electronic device 200 of this embodiment, including the electrochromic device 100 of any of the above-described embodiments, has low production costs, a simple production process, high production efficiency, a high product yield, and good product stability. When ambient light is incident only from one side of the electrochromic device 100, the first substrate layer 1 is positioned near the incident side of the ambient light. This facilitates adjusting the surface resistance of the first conductive layer 2 near the side of the first substrate layer 1, the material and thickness of the color-changing material layer 3, and other factors, thereby enabling the electronic device to achieve better color display, rapid color change, and uniform color change.

[0094] The applicant states that while the above-described embodiments illustrate the process of the present invention, the present invention is not limited to the above-described process steps, nor does it imply that the present invention must rely on the above-described process steps for implementation. Those skilled in the art will appreciate that any improvements to the present invention, equivalent substitutions for the raw materials used, additions of auxiliary components, and selection of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

Claims

1. An electrochromic device, characterized in that: The electrochromic layer comprises a first substrate layer, a first conductive layer, an electrochromic layer, a second conductive layer, and a second substrate layer stacked in sequence, wherein the electrochromic layer comprises a color-changing material layer, an electrolyte layer, and an ion storage layer stacked in sequence; The first conductive layer is made of a conductive material, and includes a first region and a second region, wherein the conductive material of the side of the second region adjacent to the first region is missing a preset width to form a first isolation region; A first conductive member is provided on a side of the second region away from the first base layer, and a second conductive member is provided on a side of the second conductive layer away from the second base layer, wherein the first conductive member and the second conductive member are aligned; The first region is connected to a first extraction electrode, and the second region is connected to a second extraction electrode; The electrochromic layer is provided with a second partition area, and a projection of the second partition area on the first conductive layer at least partially overlaps with the first partition area; At least part of the side surfaces of the first conductive member and the second conductive member are in contact with the electrochromic layer; wherein, The color-changing material layer is located on a side close to the first conductive layer, and the second partition area is set in the color-changing material layer, and the second partition area divides the color-changing material layer into two areas that are not connected to each other; or, the ion storage layer is located on a side close to the first conductive layer, and the second partition area is set in the ion storage layer, and the second partition area divides the ion storage layer into two areas that are not connected to each other.

2. The electrochromic device according to claim 1, wherein The second partition region is filled with the same electrolyte material as that 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.

3. The electrochromic device according to claim 1, wherein The first substrate layer and / or the second substrate layer is a flexible substrate layer.

4. The electrochromic device according to claim 1, wherein 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.

5. The electrochromic device according to claim 1, wherein A first bus bar is disposed on the first conductive layer.

6. The electrochromic device according to claim 5, wherein: A second bus bar is arranged on the second conductive layer, and the second conductive member is a local 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 do not overlap with each other.

7. The electrochromic device according to claim 5, wherein: The surface resistance of the first conductive layer is greater than the surface resistance of the second conductive layer, and the first bus bar is arranged along the periphery of the first region.

8. The electrochromic device according to claim 1, wherein The surface resistance of the first conductive layer is greater than the surface resistance of the second conductive layer, and the color-changing material layer is located on a side close to the first conductive layer.

9. The electrochromic device according to claim 1, wherein: The side of the first base layer away from the first conductive layer is connected to the first base layer via a first adhesive layer, and the first adhesive layer is made of a material with UV blocking effect.

10. An electronic device, characterized in that: The invention comprises the electrochromic device according to any one of claims 1 to 9.

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