CN113805396A - Electrochromic assembly, preparation method and electronic equipment - Google Patents
Electrochromic assembly, preparation method and electronic equipment Download PDFInfo
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- CN113805396A CN113805396A CN202010536741.7A CN202010536741A CN113805396A CN 113805396 A CN113805396 A CN 113805396A CN 202010536741 A CN202010536741 A CN 202010536741A CN 113805396 A CN113805396 A CN 113805396A
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- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 3
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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
- G02F1/1533—Constructional details structural features not otherwise provided for
-
- 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
- G02F1/153—Constructional details
- G02F1/1533—Constructional details structural features not otherwise provided for
- G02F2001/1536—Constructional details structural features not otherwise provided for additional, e.g. protective, layer inside the cell
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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 application discloses an electrochromic assembly, a preparation method and an electronic device. The method comprises the following steps: providing a first flexible substrate having a water oxygen barrier layer and providing a pattern layer on a side of the first flexible substrate remote from the water oxygen barrier layer to obtain a water oxygen barrier unit, the pattern layer comprising a nanoimprinted sublayer; providing an electrochromic cell comprising a second flexible substrate, a third flexible substrate, and an electrochromic layer located between the second flexible substrate and the third flexible substrate, the electrochromic cell being obtained by a roll-to-roll process; attaching the water and oxygen blocking unit on the electrochromic unit, and enabling the water and oxygen blocking layer to be close to the electrochromic unit. The method can prepare the electrochromic unit through a roll-to-roll process, avoids the defect of sheet processing, can obviously improve the yield and reduce the cost.
Description
Technical Field
The application relates to the field of electronic equipment, in particular to an electrochromic assembly, a preparation method and electronic equipment.
Background
In the process of society development, the development of electronic technology contributes to a remarkable extent. Electronic equipment is continuously updated to meet the higher and higher use requirements of users. Nowadays, users have no longer pursued only the usability of electronic devices, but have also made increasingly higher demands on their appearance, for example, color diversification, texture effects, richness of patterns, and the like. The appearance design of the electronic device is mainly embodied in the design of the shell, but the current shell still has the problem of relatively single color and pattern, and cannot present the appearance effect with rich colors and various patterns.
Although there are some related arts using the electrochromic principle to improve the appearance of the housing of the electronic device, the current electrochromic assembly, the housing and the electronic device still need to be improved.
Disclosure of Invention
The present application aims to alleviate or even solve at least one of the above technical problems to at least some extent.
The inventor finds that, as the electrochromic component mostly adopts liquid electrochromic materials or sandwich-structured solid electrochromic materials, the current electrochromic component is mostly formed on a rigid substrate, and flexible packaging is difficult to realize. The inventor finds that the electrochromic assembly needs to be added with a color decorative film to realize diversification of colors and patterns, and the color decorative film needs a process of nano-imprinting and the like to enhance the texture effect, but due to the limitation of the process, the color decorative film is mostly prepared by using sheet type processing, so that the electrochromic assembly can be prepared only by the sheet type processing. The piece formula processing has comparatively obvious not enough, and piece formula machining efficiency is too low on the one hand, and on the other hand when forming electrochromic layer on flexible substrate, because the easy brittle failure of ITO on the flexible substrate involves the material loading unloading in the multichannel process is transported and the course of working in the piece formula processing, and the cracked risk of ITO is very high, can lead to the yield lower.
In view of the above, in one aspect of the present application, there is provided a method of preparing an electrochromic assembly, comprising: providing a first flexible substrate having a water oxygen barrier layer and providing a pattern layer on a side of the first flexible substrate remote from the water oxygen barrier layer to obtain a water oxygen barrier unit, the pattern layer comprising a nanoimprinted sublayer; providing an electrochromic cell comprising a second flexible substrate, a third flexible substrate, and an electrochromic layer located between the second flexible substrate and the third flexible substrate, the electrochromic cell being obtained by a roll-to-roll process; attaching the water and oxygen blocking unit on the electrochromic unit, and enabling the water and oxygen blocking layer to be close to the electrochromic unit. The electrochromic unit and the water-oxygen blocking unit of the electrochromic assembly can be processed step by step, so that the flexible electrochromic assembly can be obtained, and the electrochromic unit is prepared by a roll-to-roll process, so that the defect of sheet processing is avoided, the yield can be obviously improved, and the cost is reduced. The obtained electrochromic assembly is rich in color and patterns, and the use requirement of a user on appearance can be met after the housing is formed.
In another aspect of the present application, there is provided an electrochromic assembly comprising: the water and oxygen barrier unit comprises a first flexible substrate with a water and oxygen barrier layer and a pattern layer positioned on one side, far away from the water and oxygen barrier layer, of the first flexible substrate; an electrochromic cell comprising a second flexible substrate, a third flexible substrate, and an electrochromic layer between the second flexible substrate and the third flexible substrate; the optical adhesive layer is located the water oxygen separation unit with between the electrochromic unit, just the water oxygen separation unit the water oxygen separation layer one side is close to the electrochromic unit sets up. Therefore, the electrochromic assembly has a water and oxygen blocking function, can form rich appearance effects by utilizing the electrochromic layer and the pattern layer, and is a flexible assembly, so that the electrochromic assembly is particularly suitable for being attached to a shell with a certain curved surface. In addition, the water oxygen blocking unit with the appearance effect and the electrochromic unit with the electrochromic function are independently arranged, so that the electrochromic unit of the electrochromic assembly can be prepared by a roll-to-roll process. Thereby being beneficial to improving the yield of the electrochromic assembly, reducing the production cost and shortening the production process.
In yet another aspect of the present application, an electronic device is presented that includes a housing defining a receiving space, and an electrochromic assembly; the mainboard is accommodated in the accommodating space and is provided with a control circuit, and the control circuit is electrically connected with the electrochromic assembly. The electronic device has all the features and advantages of the electrochromic device described above, and will not be described herein. Generally speaking, the electronic equipment has at least one of the advantages that the casing can realize controllable color change, the appearance effect is good, and the like.
Drawings
FIG. 1 shows a schematic flow diagram of a method of making an electrochromic assembly according to one example of the present application;
FIG. 2 shows a schematic structural diagram of an electrochromic assembly according to one example of the present application;
FIG. 3 shows a schematic view of a portion of an electrochromic assembly according to one example of the present application;
FIG. 4 shows a schematic view of a portion of an electrochromic assembly according to another example of the present application;
FIG. 5 shows a schematic view of a portion of an electrochromic assembly according to another example of the present application;
FIG. 6 shows a schematic view of a portion of an electrochromic assembly according to another example of the present application;
fig. 7 shows a schematic structural diagram of an electronic device according to an example of the application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In one aspect of the present application, a method of making an electrochromic assembly is presented. According to the method, the water and oxygen blocking unit of the pattern layer with the water and oxygen blocking function and the appearance effect is formed on the single flexible base material, the electrochromic unit and the water and oxygen blocking unit can be obtained by different processes respectively, and then the water and oxygen blocking unit is attached to the electrochromic unit to prepare the electrochromic assembly. Therefore, the water oxygen barrier unit can be obtained by using sheet processing, and the electrochromic unit can be obtained by using a roll-to-roll process, so that the defect caused by sheet processing of the electrochromic unit is avoided.
The individual steps of the method are explained in detail below with reference to specific examples of the application. Referring to fig. 1, the method includes:
s100: providing a first flexible substrate with a water-oxygen barrier layer, and arranging a pattern layer to obtain a water-oxygen barrier unit
According to an example of the present application, a patterned layer is formed on the first flexible substrate in this step to obtain a water oxygen barrier unit. Specifically, a water and oxygen barrier layer having water and oxygen barrier properties may be first formed on the first flexible substrate, and a pattern layer may be disposed on the other side of the first flexible substrate. The patterning layer may comprise a nanoimprint sub-layer. Thereby, a water oxygen barrier unit having a water oxygen barrier function and an appearance effect can be obtained.
According to the example of the present invention, the material forming the first flexible base material may be any material as long as it has a certain flexibility. For example, the material forming the first flexible substrate may be selected from PET, PC or PI. Similarly, the specific material, thickness, etc. of the water oxygen barrier layer are not particularly limited as long as the water oxygen barrier function can be provided. Specifically, according to the examples of the application, the water-oxygen barrier layer can reach the water vapor transmission rate of less than 1x10 under the conditions of 20 ℃ and 100% relative humidity-2g/m2The day is. Therefore, the corrosion of water and oxygen to the electrochromic unit can be effectively prevented.
In particular, the water oxygen barrier layer may have a plurality of sublayers. In this step, a plurality of barrier sublayers may be formed on one side of the first flexible substrate, and the plurality of sublayers may include a plurality of sublayers of inorganic materials or a sublayer structure in which inorganic materials and organic materials are sequentially stacked. I.e., the barrier sublayer may comprise at least one selected from an inorganic barrier sublayer and an organic barrier sublayer. The specific method of forming the barrier sublayer is not particularly limited as long as the formed barrier sublayer has a water oxygen barrier function. According to some specific examples of the present application, the barrier sublayer may be an inorganic barrier sublayer formed by flash evaporation or atomic layer deposition. The material forming the inorganic barrier sublayer is not particularly limited as long as it has a water oxygen barrier function. According to examples of the present application, the material forming the inorganic barrier sublayer may include at least one of ceramic, silicon dioxide, aluminum oxide, aluminum nitride, and magnesium oxide. The material has good water and oxygen barrier function, and the formed barrier sub-layer can meet the water and oxygen barrier requirement.
According to an example of the present application, a patterned layer is provided on a side of the first flexible substrate on which the water oxygen barrier layer is not provided. Because in the electrochromic assembly according to the application, the water oxygen barrier unit and the electrochromic unit do not share one flexible substrate, the two units can be prepared by adopting different processes, and the two units cannot influence each other. Therefore, the pattern layer is arranged in the water-oxygen barrier unit, so that the damage of the structure in the electrochromic unit, particularly the fragile transparent electrode material, caused by the preparation process (such as a sheet process) of the pattern layer can be prevented. Furthermore, the preparation process and the structure selection of the pattern layer can be richer without considering the influence of the process of the pattern layer on the yield of the electrochromic unit. For example, the patterned layer may specifically comprise a nanoimprint sub-layer. The nanoimprint sub-layer may be formed using a layer including, but not limited to, a UV imprint glue that provides an imprinted textured appearance effect to the patterned layer. Since the imprint process is currently incompatible with the roll-to-roll process, it is mostly prepared by a sheet process. Therefore, the nanoimprint sublayer is arranged on the first flexible sublayer, and the damage rate of the transparent electrode caused by operations such as feeding and blanking in the sheet type processing technology can be prevented from being greatly improved.
To further enhance the appearance effect, the pattern layer may also include a plurality of sub-layers to achieve appearance effects such as color, metallic luster, etc. In particular, the operation of forming the patterned layer may further comprise providing at least one of a color sub-layer, a nanoimprint sub-layer, and a coating sub-layer on a side of the first flexible substrate, and providing a primer layer on a side of the color sub-layer, the nanoimprint sub-layer, or the coating sub-layer away from the first flexible substrate. The order of arrangement of the color sublayer, the nanoimprint sublayer, and the coating sublayer is not particularly limited and may be selected by those skilled in the art according to actual needs. Since the color sub-layer, the nanoimprint sub-layer, and the plating sub-layer are all transparent or translucent, an opaque primer layer, which may be black or white, for example, may be provided on the side of the pattern layer furthest from the first flexible substrate 110. According to a specific example of the present application, referring to fig. 3, the color sub-layer 121 may be first formed on the side of the first flexible substrate 110 where the water oxygen barrier layer 130 is not disposed, and then the nanoimprinted sub-layer 122 may be formed on the side of the color sub-layer 121 away from the first flexible substrate 110. A primer layer 123 may then be formed on the side of the nanoimprint sub-layer 122 remote from the first flexible substrate 110. Alternatively, with reference to fig. 4, the positions of the color sublayer 121 and the nanoimprint sublayer 122 may also be interchanged.
S200: providing an electrochromic cell
According to an example of the present application, an electrochromic cell is provided in this step. Specifically, referring to fig. 2, the electrochromic cell 200 may include a second flexible substrate 210, a third flexible substrate 220, and an electrochromic layer 230 between the second flexible substrate 210 and the third flexible substrate 220, the electrochromic cell 200 being obtained by a roll-to-roll process. The material forming the second flexible base material and the third flexible base material is not particularly limited as long as it has a certain flexibility. According to an example of the present application, the material forming the second and third flexible substrates may be selected from PET, PC or PI. According to some specific examples of the present application, the material forming the first, second and third flexible substrates may be PET. The materials forming the first flexible substrate, the second flexible substrate, and the third flexible substrate may be the same or different.
According to a specific example of the present invention, the electrochromic unit has only to have the second flexible substrate 210, the third flexible substrate 220 and the electrochromic layer 230 between the second flexible substrate 210 and the third flexible substrate 220, and can realize coloring and discoloring under the action of an electric field, and switch between a transparent state and a colored state. For example, according to some examples of the present application, forming an electrochromic cell may specifically include the steps of:
referring to fig. 6, first, an operation of forming a first conductive layer 240 on one side of the second flexible substrate 210 and forming a second conductive layer 250 on the third flexible substrate 220 may be performed. Specifically, the first conductive layer 240 and the second conductive layer 250 may both be a transparent conductive material, and may be formed of, for example, a transparent oxide material including, but not limited to, ITO, and the like. Both the first conductive layer 240 and the second conductive layer 250 may be on a flexible substrate formed by a roll-to-roll process. Because the diameter of the roller of the roll-to-roll process is usually larger, ITO is not easy to crack in the processing process. The roll-to-roll processing has the advantages of high production efficiency and good process stability, so that the cost can be lower. Subsequently, the preparation of the electrochromic layer can be carried out. The electrochromic layer may be formed by a combination of a doctor blade process and a roll-to-roll process, i.e., a material for forming the electrochromic layer may be doctor blade coated on one of the second flexible substrate and the third flexible substrate having the conductive layer, and then the other flexible substrate is attached to the flexible substrate having the electrochromic layer material by a roll-to-roll process.
According to specific examples of the present application, the electrochromic layer may also include multiple sublayers to perform ion transport, ion storage, and the like. For example, a first electrochromic functional layer 231 may be disposed on the side of the second flexible substrate 210 having the first electrically conductive layer 240, and a second electrochromic functional layer 232 may be disposed on the side of the third flexible substrate 220 having the second electrically conductive layer 250. Subsequently, a third electrochromic functional layer 233 may be knife coated on the first electrochromic functional layer 231 or the second electrochromic functional layer 232, and the second flexible substrate 210 and the third flexible substrate 220 may be bonded based on the third electrochromic functional layer 233 using a roll-to-roll process.
According to the examples of the present application, since the electrochromic material is generally a water oxygen sensitive material, the formed electrochromic functional layer needs to be encapsulated. Referring to fig. 5, an encapsulation structure 10 may be disposed at sidewalls of the second and third flexible substrates to seal the electrochromic layer 230 between the second and third flexible substrates. The package structure 10 may be formed after the electrochromic layer 230 is formed by a roll-to-roll process, or the package structure 10 may be formed in advance on one side of a second flexible substrate or a third flexible substrate, and then the electrochromic layer 230 is formed in a package region defined by the package structure 10.
S300: attaching the water oxygen barrier unit to the electrochromic unit
According to an example of the present application, in this step, the water oxygen barrier unit is attached on the electrochromic unit using an optical glue, whereby an electrochromic assembly can be obtained. The structure of the electrochromic assembly may be as shown in fig. 2.
Specifically, the optical cement may form the optical cement layer 300 having a thickness of not more than 50 μm. The inventor finds that when the thickness of the optical cement is not too thick, a good water and oxygen blocking effect can be obtained even if the water and oxygen blocking layer is arranged on the first flexible substrate. Specifically, the electrochromic cell 200 has a packaging structure, and the water and oxygen blocking layer 130 side of the water and oxygen blocking layer 100 is disposed close to the electrochromic cell 200, so that although water and oxygen in the environment can erode from the side wall of the optical adhesive layer 300 to the inside of the electrochromic cell 200, the water and oxygen in the environment need to extend to the inside of the electrochromic cell 200 along the extending direction of the first flexible substrate to erode the electrochromic layer 230, and therefore, when the thickness of the optical adhesive layer 300 is not greater than 50 micrometers, for example, about 25 micrometers, the overall water and oxygen resistance of the electrochromic device is not affected.
According to some embodiments of the present application, after the water oxygen barrier unit is attached to the electrochromic unit, a cover glass may be further disposed. For example, a cover glass may be attached to the side of the electrochromic cell away from the water oxygen barrier cell to provide protection for the electrochromic layer 230 and the like on the side of the electrochromic cell 200 away from the water oxygen barrier cell 100.
In another aspect of the present application, an electrochromic assembly is presented. Referring to fig. 2, the electrochromic assembly 1000 may include a water oxygen barrier cell 100 and an electrochromic cell 200, which may be obtained using the aforementioned method. Specifically, the water oxygen barrier unit 100 may include a first flexible substrate 110 having a water oxygen barrier layer 130, and a pattern layer 120 on a side of the first flexible substrate 110 away from the water oxygen barrier layer 130. The electrochromic unit 200 may include a second flexible substrate 210, a third flexible substrate 220, and an electrochromic layer 230 located between the second flexible substrate and the third flexible substrate, the water oxygen blocking unit 100 and the electrochromic unit 200 are attached by an optical glue layer 300, and one side of the water oxygen blocking layer 130 of the water oxygen blocking unit is close to one side of the electrochromic unit.
As previously mentioned, the pattern layer 120 may comprise a plurality of sub-layers, such as may comprise at least one of a color sub-layer, a nanoimprint sub-layer, and a coating sub-layer, wherein the color sub-layer or the nanoimprint sub-layer is disposed proximate to the first flexible substrate, and the side of the color sub-layer, the nanoimprint sub-layer, or the coating sub-layer distal from the first flexible substrate further comprises a primer layer. Therefore, the water and oxygen blocking unit 100 can be used for realizing a water and oxygen blocking function and a certain appearance effect, and the water and oxygen blocking layer and the pattern layer are arranged on the same flexible base material, so that the preparation of the two layers and the electrochromic unit can be separated, and the negative influence of the preparation process of structures including but not limited to a nano-imprinting sublayer and the like on the production yield of the electrochromic unit can be prevented.
According to some specific examples of the present application, the electrochromic unit 200 may specifically include a first conductive layer, a second conductive layer, a first electrochromic functional layer, a second electrochromic functional layer, a third electrochromic functional layer, and the like, and may further have an encapsulation structure to seal the first electrochromic functional layer, the second electrochromic functional layer, and the third electrochromic functional layer between the second flexible substrate and the third flexible substrate. The specific location of the above structure has been described in detail above, and will not be described again. For example, to further improve the performance of the electrochromic device, a cover glass may be attached to the electrochromic cell on the side away from the water oxygen barrier cell.
In another aspect of the present application, an electronic device is presented. Referring to fig. 7, the electronic device 5000 includes a housing 2000 and an electrochromic device (not shown), the housing 2000 defines a receiving space (not shown), and the motherboard 4000 is received in the receiving space and has a control circuit, and the control circuit is electrically connected to the electrochromic device. The electronic device has all the features and advantages of the electrochromic device described above, and will not be described herein. Generally speaking, the electronic equipment has at least one of the advantages that the casing can realize controllable color change, the appearance effect is good, and the like.
According to the examples of the present application, the specific arrangement position of the electrochromic component is not particularly limited. For example, it may be part or all of housing 2000, or it may be located at camera 3000, e.g., at the aperture or periphery of camera 3000. Alternatively, the electrochromic element may be located on the side of a display screen (not shown) or at a front camera or the like. As can be appreciated by those skilled in the art, since the water oxygen barrier unit of the electrochromic device according to the present application has a pattern layer, the electrochromic device may have an appearance effect of a certain color, texture, etc. Therefore, the electrochromic assembly can form part or all of the shell 2000, so that the shell with a color-changeable appearance is realized, or the shell serves as a frame of a camera and a display screen, the appearance of the electronic equipment is further enriched, and the user experience is improved.
The present application is described below by way of specific examples, and those skilled in the art will appreciate that the following specific examples are for illustrative purposes only and do not limit the scope of the present application in any way. In addition, in the following examples, materials and equipment used are commercially available unless otherwise specified. If in the examples that follow, specific processing conditions and processing methods are not explicitly described, processing may be performed using conditions and methods known in the art.
Example 1
Providing an electrochromic assembly, wherein the electrochromic assembly is structured as shown in fig. 2, two layers of ITO are arranged on the inner sides of the second flexible substrate and the third flexible substrate to form a transparent electrode layer, the water and oxygen barrier unit is structured as shown in fig. 4, silicon dioxide is used as a water and oxygen barrier sub-layer, and the nanoimprint sub-layer 122 is arranged close to the first flexible substrate. The first flexible base material, the second flexible base material and the third flexible base material are all PET. The electrochromic cell is prepared by a roll-to-roll process.
The electrochromic assembly obtained in example 1 was subjected to a durability test for its water oxygen barrier capability. The electrochromic assembly can be operated for more than 20 days by continuously operating the assembly at 65 ℃ and 95% humidity. The electrochromic component can operate for more than 7 days under the conditions of 85 ℃ and 85% of humidity. Tests carried out on electrochromic components which fail at 85% humidity have revealed that the reason for this failure is not the failure of the water oxygen barrier, but rather the failure of the substrate made of PET material (the softening point temperature of PET is around 80 ℃). It can be confirmed that the electrochromic device obtained in example 1 has a good water oxygen barrier capability and can satisfy the durability requirements of most electronic devices.
By way of example, the electronic device 5000 may be any of various types of computer system devices (only one modality shown in fig. 7 by way of example) that are mobile or portable and that perform wireless communications. Specifically, the electronic device 2000 may be a mobile phone or smart phone (e.g., an iPhone (TM) based phone), a Portable game device (e.g., Nintendo DS (TM), PlayStation Portable (TM), game Advance (TM), iPhone (TM)), a laptop computer, a PDA, a Portable internet device, a music player and a data storage device, other handheld devices and a headset such as a watch, an in-ear headphone, a pendant, a headset, etc., and the electronic device 3000 may also be other wearable devices (e.g., a Headset (HMD) such as electronic glasses, electronic clothing, an electronic bracelet, an electronic necklace, an electronic tattoo, an electronic device, or a smart watch).
The electronic device 2000 may also be any of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, vehicle transportation equipment, calculators, programmable remote controllers, pagers, laptop computers, desktop computers, printers, netbook computers, Personal Digital Assistants (PDAs), Portable Multimedia Players (PMPs), moving Picture experts group (MPEG-1 or MPEG-2) Audio layer 3(MP3) players, portable medical devices, and digital cameras, and combinations thereof.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (14)
1. A method of making an electrochromic assembly, comprising:
providing a first flexible substrate having a water oxygen barrier layer and providing a pattern layer on a side of the first flexible substrate remote from the water oxygen barrier layer to obtain a water oxygen barrier unit, the pattern layer comprising a nanoimprinted sublayer;
providing an electrochromic cell comprising a second flexible substrate, a third flexible substrate, and an electrochromic layer located between the second flexible substrate and the third flexible substrate, the electrochromic cell being obtained by a roll-to-roll process;
attaching the water and oxygen blocking unit on the electrochromic unit, and enabling the water and oxygen blocking layer to be close to the electrochromic unit.
2. The method of claim 1, wherein the first, second, and third flexible substrates are formed from materials independently selected from PET, PC, or PI, respectively.
3. The method of claim 1 or 2, wherein obtaining the water oxygen barrier unit comprises:
forming a plurality of barrier sub-layers on one side of the first flexible substrate, the barrier sub-layers comprising at least one selected from an inorganic barrier sub-layer and an organic barrier sub-layer,
the inorganic barrier sublayer is formed by flash evaporation or atomic layer deposition, and a material for forming the inorganic barrier sublayer comprises at least one of ceramic, silicon dioxide, aluminum oxide, aluminum nitride and magnesium oxide;
optionally, the water oxygen barrier layer has a moisture vapor transmission rate of less than 1x10-2g/m2The day is.
4. The method of claim 1 or 2, wherein disposing the pattern layer comprises:
providing at least one of a color sub-layer, the nanoimprint sub-layer, and a coating sub-layer on one side of the first flexible substrate,
and arranging a primer layer on one side of the color sub-layer, the nanoimprint sub-layer or the coating sub-layer, which is far away from the first flexible substrate.
5. The method of claim 1 or 2, wherein the providing an electrochromic cell comprises:
forming a first conductive layer on the second flexible substrate;
forming a second conductive layer on the third flexible substrate;
arranging a first electrochromic functional layer on one side, provided with the first conductive layer, of the second flexible substrate;
arranging a second electrochromic functional layer on one side, provided with the second conductive layer, of the third flexible substrate; and
coating a third electrochromic functional layer on the first electrochromic functional layer or the second electrochromic functional layer in a scraping mode, and bonding the second flexible substrate and the third flexible substrate based on the third electrochromic functional layer,
the steps of providing the first electrochromic functional layer, providing the second electrochromic functional layer, and bonding the second flexible substrate and the third flexible substrate are all achieved through the roll-to-roll process.
6. The method of claim 5, wherein forming the third electrochromic functional layer further comprises:
and arranging packaging structures at the side walls of the second flexible substrate and the third flexible substrate so as to seal the first electrochromic functional layer, the second electrochromic functional layer and the third electrochromic functional layer between the second flexible substrate and the third flexible substrate.
7. The method according to claim 1 or 2, wherein the water oxygen barrier unit is attached to the electrochromic unit using an optical glue,
the thickness of the optical cement is not more than 50 microns.
8. The method of claim 1 or 2, wherein after attaching the water oxygen barrier cell over the electrochromic cell, further comprising:
and cover plate glass is attached to one side of the electrochromic unit, which is far away from the water and oxygen barrier unit.
9. An electrochromic assembly, comprising:
the water and oxygen barrier unit comprises a first flexible substrate with a water and oxygen barrier layer and a pattern layer positioned on one side, far away from the water and oxygen barrier layer, of the first flexible substrate;
an electrochromic cell comprising a second flexible substrate, a third flexible substrate, and an electrochromic layer between the second flexible substrate and the third flexible substrate;
the optical adhesive layer is located the water oxygen separation unit with between the electrochromic unit, just the water oxygen separation unit the water oxygen separation layer one side is close to the electrochromic unit sets up.
10. The electrochromic assembly of claim 9, wherein the pattern layer comprises:
at least one of a color sub-layer, the nanoimprint sub-layer, and a coating sub-layer, wherein the color sub-layer or the nanoimprint sub-layer is disposed proximate to the first flexible substrate,
the side of the color sub-layer, the nanoimprint sub-layer, or the coating sub-layer distal from the first flexible substrate further comprises a primer layer.
11. The electrochromic assembly of claim 9, wherein the electrochromic cell comprises:
a first conductive layer on the second flexible substrate;
a second conductive layer on the third flexible substrate;
a first electrochromic functional layer located on a side of the second flexible substrate having the first conductive layer;
a second electrochromic functional layer located on a side of the third flexible substrate having the second conductive layer;
a third electrochromic functional layer located between the first electrochromic functional layer and the second electrochromic functional layer.
12. The electrochromic assembly of claim 11, wherein the electrochromic cell further comprises an encapsulation structure that seals the first, second, and third electrochromic functional layers between the second and third flexible substrates.
13. Electrochromic assembly according to claim 9,
one side of the electrochromic unit, which is far away from the water oxygen barrier unit, is provided with cover plate glass;
optionally, the materials forming the first, second and third flexible substrates are each independently selected from PET, PC or PI;
optionally, the water oxygen barrier unit comprises a plurality of barrier sublayers, the barrier sublayers comprising at least one selected from an inorganic barrier sublayer and an organic barrier sublayer, the inorganic barrier sublayer formed of a material comprising at least one of a ceramic, silicon dioxide, aluminum oxide, aluminum nitride, and magnesium oxide;
optionally, the water oxygen barrier layer has a moisture vapor transmission rate of less than 1x10-2g/m2A day;
optionally, the optical subbing layer has a thickness of no greater than 50 microns.
14. An electronic device, comprising:
the electrochromic device comprises a shell and an electrochromic assembly, wherein the shell defines a containing space;
the mainboard is accommodated in the accommodating space and is provided with a control circuit, and the control circuit is electrically connected with the electrochromic assembly.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010536741.7A CN113805396A (en) | 2020-06-12 | 2020-06-12 | Electrochromic assembly, preparation method and electronic equipment |
| PCT/CN2021/086982 WO2021249007A1 (en) | 2020-06-12 | 2021-04-13 | Electrochromic component and preparation method therefor, and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010536741.7A CN113805396A (en) | 2020-06-12 | 2020-06-12 | Electrochromic assembly, preparation method and electronic equipment |
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