CN214012530U - Conductive structure and electronic equipment - Google Patents
Conductive structure and electronic equipment Download PDFInfo
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- CN214012530U CN214012530U CN202023117476.3U CN202023117476U CN214012530U CN 214012530 U CN214012530 U CN 214012530U CN 202023117476 U CN202023117476 U CN 202023117476U CN 214012530 U CN214012530 U CN 214012530U
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Abstract
The utility model discloses a conductive structure, which comprises a substrate, a conductive medium layer and a first metal nanowire layer which are arranged in a stacked manner, wherein the light transmittance of the conductive medium layer per unit thickness is greater than that of the first metal nanowire layer per unit thickness; the conductive structure can obtain larger thickness in the direction vertical to the conductive medium layer, is beneficial to current transmission and light penetration, and meets diversified market requirements.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a conductive structure and electronic equipment.
Background
With the development of the photoelectric industry, the transparent conductive film is more and more widely applied. In 1907, Badeker reported a translucent conductive CdO material for the first time, and until world war II, a Transparent Conductive Film (TCF) material was paid sufficient attention and applied. TCF materials (e.g., ito (indium tin oxide)), TFO (fluorinated-tin oxide)) are now widely used in flat panel displays, energy-saving glasses and solar cells. From a physical point of view, the light transmittance and the electrical conductivity of a substance are a pair of basic contradictions. A material must have both high carrier concentration and high carrier mobility to have good electrical conductivity, but the higher concentration of carriers absorbs photons, thereby increasing the absorption of light by the material and decreasing its transmittance. The research on transparent conductive films, from CdO to ITO, and AZO (Al-doped ZnO), from metal films to polymer films, from single components to multi-component materials … …, has been around this contradiction. Metal oxides, particularly ITO, have high light transmittance and low resistivity in the visible region and have been a hot spot for the past 50 years in the research and application of transparent conductive electrodes. However, the metal oxide has the defects of limited conductivity, brittleness, fragility, difficult deformation and the like, and meanwhile, the raw material resources are increasingly scarce and expensive, so that the requirements of the development of modern optoelectronic devices cannot be met.
In recent years, the conductive materials used for manufacturing transparent conductive films mainly include: nanowires, metal nanoparticles, conductive high molecular polymers, graphene, carbon nanotubes, and the like. The transparent conductive film made of the nanowire conductive filler has excellent conductivity and light transmittance, and can still keep a low surface resistance value after being bent for many times. Therefore, the nano-wire is called as a conductive material which has the most potential to replace ITO (indium tin oxide) and is used for manufacturing transparent conductive films, and has attracted extensive attention at home and abroad.
The nanowire is used as an electrode mainly in two modes, namely an ordered grid electrode, namely a regular macro or nano-scale grid line is obtained on the surface of a substrate through technologies such as screen printing, electron beams, focused ion beam etching and the like. In a traditional crystalline silicon solar cell, silver paste grid line electrodes are used in large quantities. And obtaining the silver paste grid line electrode by screen printing and subsequent high-temperature (about 800 ℃) annealing. However, the expensive production methods of such electrodes (screen printing, ion beam and electron beam etching, etc.) significantly increase the cost of the electrodes. And secondly, preparing the random nanowire thin film electrode in a large area by a liquid phase method. Random nanowire networks have received much attention from research institutions and industry because of their advantages such as excellent optoelectronic properties, bending resistance, and ease of large area fabrication on substrates of different materials (Ye, S., Rathmell, A.R., Chen, Z., Stewart, I.E. & Wiley, B.J.Metal nanowire networks: the next generation of transgenic materials. advanced materials26,6670-6687, doi:10.1002/adma.201402710 (2014)). However, high surface resistance and low surface adhesion limit large-area applications of nanowires, and complicated post-treatment processes such as high-temperature annealing, high-intensity pulsed laser sintering, and surface encapsulation are used to solve the above problems in order to prepare a nanowire electrode having excellent properties, but these processes are time-consuming and energy-consuming.
Therefore, how to prepare the nanowire electrode with excellent performances such as high transparency, low surface resistance, good substrate adhesion, mechanical environment stability and the like at low cost becomes a key problem of large-scale application of the nanowire electrode in the photoelectric field, particularly in the industries such as touch display, photovoltaic and the like.
SUMMERY OF THE UTILITY MODEL
To solve the technical problem, the application provides a conductive structure, including base plate, conductive medium layer, the first metal nanowire layer that stacks gradually the setting, unit thickness conductive medium layer's luminousness is greater than unit thickness the luminousness of first metal nanowire layer.
Further, the thickness of the conductive medium layer is greater than that of the first metal nanowire layer.
Furthermore, a hole extending along the direction of the first metal nanowire layer pointing to the conductive medium layer is formed in the conductive medium layer, and the metal nanowires are filled in the hole.
And the second metal nanowire layer is stacked on one side surface of the conductive medium layer far away from the first metal nanowire layer.
Further, the length of the metal nanowires in the first metal nanowire layer is 5-50 μm.
Further, the conductive medium layer comprises at least one of conductive resin, metal nanoparticles and conductive carbon nanomaterials.
Further, the size of the metal nanoparticles is 10nm to 10 μm.
Further, the light transmittance of the conductive structure is greater than 10%.
Furthermore, the sheet resistance of the conductive structure is 0.1-10 omega/□.
The application also provides an electronic device comprising the conductive structure.
Has the advantages that: the conductive structure comprises a conductive medium layer and a first metal nanowire layer which are stacked, wherein the light transmittance of the conductive medium layer is larger than that of the first metal nanowire layer, so that the conductive structure can not only be larger in thickness in the direction perpendicular to the conductive medium layer, but also can keep better electrical performance and optical performance.
Drawings
FIG. 1 is a schematic diagram of a conductive structure according to a first embodiment of the present application;
FIG. 2 is a schematic structural diagram of a conductive structure according to a fourth embodiment of the present application;
fig. 3 is a schematic structural diagram of a conductive structure according to a sixteenth embodiment of the present application.
Detailed Description
The technical solutions in the examples of the present application will be described in detail below with reference to the embodiments of the present application. It should be noted that the described embodiments are only some embodiments of the present application, and not all embodiments.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. Unless otherwise defined, all terms (including technical and scientific terms) in the specification may be defined as commonly understood by one of ordinary skill in the art. Terms defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and may not be interpreted in an idealized or overly formal sense unless expressly so defined. Furthermore, unless expressly stated to the contrary, the terms "comprises" and "comprising," when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof. Thus, the above wording will be understood to mean that the stated elements are included, but not to exclude any other elements.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present embodiments.
Definition of
The following definitions apply to aspects described in relation to some embodiments of the invention, and these definitions may be extended herein as well.
As used herein, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Unless the context clearly dictates otherwise, reference to an object may include multiple objects.
As used herein, the term "adjacent" refers to being proximate or contiguous. The adjacent objects may be spaced apart from each other, or may be in actual or direct contact with each other. In some cases, adjacent objects may be connected to each other, or may be integrally formed with each other.
As used herein, the term "connected" refers to an operative coupling or link. The linked objects may be directly coupled to each other or may be indirectly coupled to each other via another set of objects.
As used herein, relative terms, such as "inside," "interior," "exterior," "top," "bottom," "front," "back," "upper," "lower," "vertical," "lateral," "above … …," and "below … …," refer to the orientation of a group of objects relative to one another as a matter of manufacture or use, for example, according to the drawings, but do not require the particular orientation of the objects during manufacture or use.
As used herein, the term "nano-range" or "nm range" refers to a size range of about 1nm to about 1 μm.
As used herein, the term "aspect ratio" refers to the ratio of the largest dimension or range of an object to the average of the remaining dimensions or ranges of the object, wherein the remaining dimensions are orthogonal relative to each other and relative to the largest dimension. In some cases, the remaining dimensions of the object may be substantially the same, and an average of the remaining dimensions may substantially correspond to any of the remaining dimensions. For example, the aspect ratio of a cylinder refers to the ratio of the length of the cylinder to the diameter of the cross-section of the cylinder.
As used herein, the term "nanoscale" object refers to an object having at least one dimension in the nanometer range. The nanoscale objects can have any of a wide variety of shapes, and can be formed from a wide variety of materials. Examples of nanoscale objects include nanowires, nanotubes, nanoplatelets, nanoparticles, and other nanostructures.
As used herein, the term "nanowire" refers to an elongated nanoscale object that is substantially solid. Typically, nanowires have lateral dimensions in the nanometer range (e.g., cross-sectional dimensions in terms of diameter, width, or width or diameter representing an average across orthogonal directions).
As shown in fig. 1, which is a schematic view of a conductive structure in a first embodiment of the present disclosure, a conductive structure 100 includes a substrate 10, a conductive medium layer 20, and a first metal nanowire layer 11, which are sequentially stacked, and a light transmittance of the conductive medium layer 20 per unit thickness is greater than a light transmittance of the first metal nanowire layer 11 per unit thickness. The thickness of the conductive structure 100 in the direction perpendicular to the conductive medium layer 20 can be increased by matching the conductive medium layer 20 with the first metal nanowire layer 11, and the conductive medium layer 20 and the first metal nanowire layer 11 conduct current together in the direction perpendicular to the conductive medium layer 20, so that the conductive structure 100 can be designed into various structures according to actual performance requirements, is suitable for various devices and scenes, and meets the diversified requirements of the market.
The conductive medium layer 20 of the present application can provide a larger thickness for the conductive structure 100, and when the conductive structure 100 has a certain light transmittance, the conductivity of the thicker conductive medium layer 20 is generally lower, and the first metal nanowire layer 11 is stacked on the conductive medium layer 20, so that the conductive structure 100 has excellent optical performance and electrical performance.
In a second embodiment of the present application, a thickness of the conductive medium layer is greater than a thickness of the first metal nanowire layer, so that the conductive structure has a certain thickness in a direction perpendicular to the conductive medium layer.
In a preferred embodiment, the thickness of the conductive medium layer is greater than 100nm, so that the conductive structure has a certain thickness in the vertical direction, the conductive medium layer and the first metal nanowire layer together improve the electrical and optical properties of the conductive structure in the thickness direction, and the thickness of the conductive structure is preferably 200nm to 10 μm.
In a third embodiment of the present application, a hole extending in a direction of the conductive dielectric layer along a direction of the first metal nanowire layer is formed in the conductive dielectric layer, and a metal nanowire is filled in the hole, where the metal nanowire may be a part of metal nanowires in the first metal nanowire layer, or may be a metal nanowire additionally filled in the hole, and the hole may be a blind hole or a through hole, so as to improve electrical performance of the conductive structure.
In the fourth embodiment of the present application, the conductive structure further includes a second metal nanowire layer stacked on the conductive medium layer and far away from a side of the first metal nanowire layer, so as to increase the conductivity and the light transmittance of the conductive structure, specifically, as shown in fig. 2, the conductive structure 100 includes a substrate 10, a second metal nanowire layer 12, a conductive medium layer 21 composed of metal nanoparticles, and a first metal nanowire layer 11 stacked in sequence from bottom to top, so as to further improve the optical performance and the electrical performance of the conductive structure.
In a preferred embodiment, the lengths of the metal nanowires in the second metal nanowire layer of the present application may be the same as or different from the lengths of the metal nanowires in the first metal nanowire layer, for example, the length of the metal nanowires in the second metal nanowire layer may be 20 μm, and the second metal nanowire layer, the conductive medium layer, and the first metal nanowire layer are combined together to form a conductive structure with low sheet resistance and high light transmittance.
In a fifth embodiment of the present application, the length of the metal nanowire in the first metal nanowire layer is 5 to 50 μm, so that the metal nanowire itself and the metal nanowire are not easily knotted, so that the conductive structure obtains a suitable sheet resistance and a suitable light transmittance, and the length of the metal nanowire is preferably 10 to 30 μm.
In a sixth embodiment of the present application, the light transmittance of the conductive structure is greater than 10%, so that the conductive structure can be used as an electrode of a transparent display device, the light transmittance of the conductive structure is preferably 30-80%, and the conductive structure 100 can be used in an electronic device for displaying a scene transparently to view an image on the other side of the electronic device, for example, can be used as an electrode device on a display window, and is beautiful and practical.
In the seventh embodiment of the present application, the light transmittance per unit thickness of the conductive medium layer is greater than that of the first metal nanowire layer, so as to further improve the optical performance of the conductive structure.
In an eighth embodiment of the present application, the haze of the conductive structure of the present application is less than 70% so that one can see a scene from one side of the conductive structure to the other side.
In the ninth embodiment of the present application, the sheet resistance of the conductive structure is 0.1-10 Ω/□, so as to ensure that the conductive structure has good conductive performance, wherein the sheet resistance of the conductive medium layer is greater than the sheet resistance of the first metal nanowire layer and/or the second metal nanowire layer, so that the conductive structure can better meet the requirements of thickness, light transmittance and sheet resistance.
In the tenth embodiment of the present application, the metal nanowire of the conductive structure includes at least one of a gold nanowire, a silver nanowire, a copper nanowire, an iron nanowire, a cobalt nanowire, and a nickel nanowire, and the metal nanowire may be used alone or in combination with a plurality of metal nanowires, and may be used in combination according to actual needs.
In an eleventh embodiment of the present invention, the aspect ratio of the metal nanowires in the first metal nanowire layer and/or the second metal nanowire layer in the conductive structure of the present invention is 10 to 10000, and the aspect ratio of the metal nanowires is more preferably 100 to 5000.
In a preferred embodiment, the diameter of the metal nanowire of the conductive structure of the present invention is in the range of 5 to 100 nm.
In a twelfth embodiment of the present application, the conductive medium layer includes at least one of conductive resin, metal nanoparticles, and conductive carbon nanomaterials, the cost of the conductive medium layer per unit thickness is lower than that of the metal nanowire layer, so as to effectively reduce the cost of the conductive structure, and meanwhile, the conductive medium layer can be in better lap joint with the metal nanowires in the first metal nanowire layer to conduct electricity, thereby increasing the thickness of the conductive structure and reducing the sheet resistance of the conductive structure.
In a thirteenth embodiment of the present application, the size of the metal nanoparticles is 10nm to 10 μm, preferably 50nm to 2 μm, so that the sheet resistance of the conductive structure can be controlled in a proper range, and the conductive structure has a wider application range.
In a fourteenth specific embodiment of the present application, the metal nanoparticles in the conductive structure include at least one of gold nanoparticles, silver nanoparticles, copper nanoparticles, iron nanoparticles, cobalt nanoparticles, and nickel nanoparticles, and the metal nanoparticles have good current conductivity and are suitable for controlling the vertical conductivity of the conductive structure to a suitable value.
In a fifteenth embodiment of the present application, the conductive resin in the conductive structure includes PEDOT, so that the thickness and the conductivity of the conductive structure can be controlled within a suitable range.
In a sixteenth embodiment of the present application, as shown in fig. 3, the conductive structure 100 includes a conductive medium layer 22 composed of a conductive resin, and a first metal nanowire layer 11 sequentially disposed from bottom to top on the substrate 10.
In a seventeenth embodiment of the present application, the conductive carbon nanomaterial in the conductive structure comprises at least one of graphene, graphdine, fullerene, carbon nanotube to obtain a diversified conductive structure.
The application also provides electronic equipment which comprises the conductive structure, the electronic equipment can be a display device and can also be a non-display device, the display device comprises but is not limited to a mobile phone, a computer, a vehicle-mounted display, an AR display, a VR display, an intelligent watch, a flexible display screen, a flexible display panel and other devices, and the electroluminescent device can be a QLED device, an OLED device, a PLED device, a Micro-LED device or a Mini-LED device. The display device of the present application may be a top emission display device, a bottom emission display device, or a transparent display device.
The preparation method of the conductive structure comprises the following steps:
s1, providing a substrate;
in this embodiment, the substrate may be a rigid substrate or a flexible substrate. Wherein the rigid substrate includes, but is not limited to, one or more of glass, metal foil or ceramic material.
The flexible substrate comprises a polymer film comprising one or more of polyethylene terephthalate (PET), polyethylene terephthalate (PEN), Polyetheretherketone (PEEK), Polystyrene (PS), Polyethersulfone (PES), Polycarbonate (PC), Polyarylate (PAT), Polyarylate (PAR), Polyimide (PI), polyvinyl chloride (PV), Polyethylene (PE), polyvinylpyrrolidone (PVP), textile fibers.
S2, forming a conductive medium layer on the substrate;
the conductive medium layer may be formed by ink-jet printing, spray coating, spin coating, printing, doctor blading, dip coating, dipping, roll coating, slit printing, or the like, but the present application is not limited thereto.
S3, coating the metal nanowire dispersion liquid on the conductive medium layer to form a first metal nanowire layer;
the metal nanowire dispersion of the present embodiment includes metal nanowires, the number of coating times is, for example, 1 to 10, and when the number of coating times is multiple, the metal nanowires are arranged in a sequential stacking manner. When the metal nanowire dispersion liquid is coated on the conductive medium layer every time, the metal nanowire dispersion liquid is uniformly spread on the conductive medium layer, and the metal nanowire dispersion liquid is formed to be more uniform through subsequent drying, annealing and other treatment, so that the conductive structure with better smoothness is obtained.
In a preferred embodiment of the present application, in step S2, the conductive medium layer may be prepared from a metal nanoparticle dispersion liquid, where the mass percentage of the metal nanoparticles in the metal nanoparticle dispersion liquid is 0.5 to 10%, and preferably 0.5 to 2%; the metal nanoparticle dispersion liquid can be an aqueous dispersion liquid, wherein the aqueous dispersion liquid comprises aqueous cellulose, a surfactant, water and the like, so that the viscosity and the surface tension of the metal nanoparticle dispersion liquid are proper, the dispersibility is better, and the prepared conductive medium layer has high uniformity and excellent conductivity; the metal nanoparticle dispersion may also be an oily dispersion, including, for example, polyester, polyurethane, BYK, ester solvents, and the like, to facilitate the preparation of large-sized conductive structures using inkjet printing.
In another preferred embodiment of the present application, in step S3, the mass percentage of the metal nanowires in the metal nanowire dispersion is 0.05 to 5%, so that the dispersibility of the metal nanowires is better, and the mass percentage of the metal nanowires is preferably 0.1 to 2%. The metal nanowire dispersion may further include aqueous cellulose, a surfactant, water, etc., so that the metal nanowires have better dispersibility to obtain a conductive structure having excellent conductivity.
The structure of a display device according to some exemplary embodiments of the present application will be described in more detail below; however, the exemplary embodiments of the present application are not limited thereto.
Example 1
Step 1: preparation of conductive high molecular polymer film
A20 # wire rod is adopted to coat a high-molecular conductive polymer PEDOT/PSS on the surface of a PET substrate, and the PET substrate is placed in a 130 ℃ oven for 10min to form a conductive high-molecular polymer film layer with the thickness of 1.5 mu m.
Step 2: conductive structure for preparing silver nanowires and conductive macromolecules
1% of nano-silver wire dispersion liquid (the diameter of a nano-silver wire is 30nm, the length of the nano-silver wire is 20 mu m) is coated on the conductive high polymer film layer in a spin mode for 1-5 times, the composite layer is placed in a 50 ℃ oven for 3min after each spin coating, and the sheet resistance, the transmittance, the haze and the thickness of the conductive structure are measured after the plurality of spin coatings are shown in the table.
Table 1 conductive structure performance parameters at different spin coating times in example 1
| Number of spin coating | Square resistance, omega/□ | Transmittance of | Haze% | Thickness, μm |
| 1 | 10 | 72 | 20 | 2.0 |
| 2 | 6 | 64 | 32 | 2.1 |
| 3 | 2.2 | 34 | 47 | 2.1 |
| 4 | 1.1 | 26 | 63 | 2.2 |
| 5 | 1.0 | 21 | 60 | 2.2 |
Example 2
Step 1: spin-coating a dispersion liquid containing nano-silver particles with the particle size of 200nm on a PET (polyethylene terephthalate) substrate, wherein the mass percentage of the nano-silver particles is 5%, and drying to form a nano-silver particle conductive layer with the thickness of 0.5 mu m;
step 2: and (3) spinning and coating silver nanowire dispersion liquid with the concentration of 1.5% (wherein the diameter of the silver nanowire is 30nm, and the length of the silver nanowire is 30 micrometers) on the nano-silver particle conductive layer, and drying to form a conductive structure.
Example 3
Step 1: spin-coating a dispersion liquid containing nano-silver particles with the particle size of 500nm on a PET (polyethylene terephthalate) substrate, wherein the mass percentage of the nano-silver particles is 5%, and drying to form a nano-silver particle conductive layer with the thickness of 1 mu m;
step 2: and (3) spinning and coating silver nanowire dispersion liquid (the diameter of the silver nanowire is 30nm, and the length of the silver nanowire is 30 microns) with the concentration of 1.5% on the nano-silver particle conductive layer, and drying to form a conductive structure.
Example 4
Step 1: spin-coating a dispersion liquid containing nano-silver particles with the particle size of 1 micrometer on a PET (polyethylene terephthalate) substrate, wherein the mass percentage of the nano-silver particles is 5%, and drying to form a nano-silver particle conductive layer with the thickness of 2 micrometers;
step 2: and (3) spinning and coating silver nanowire dispersion liquid (the diameter of the silver nanowire is 30nm, and the length of the silver nanowire is 30 microns) with the concentration of 1.5% on the nano-silver particle conductive layer, and drying to form a conductive structure.
Example 5
Step 1: coating the dispersion of silver particles with the particle size of 3 mu m on a PET substrate in a spinning way, wherein the mass percentage of the silver particles is 5 percent, and drying to form a silver particle conducting layer with the thickness of 5 mu m;
step 2: and (3) spinning and coating silver nanowire dispersion liquid (the diameter of the silver nanowire is 30nm, and the length of the silver nanowire is 30 microns) with the concentration of 1.5% on the nano-silver particle conductive layer, and drying to form a conductive structure.
Example 6
Step 1: scraping and coating the graphene slurry on a PET (polyethylene terephthalate) base material, and drying at 130 ℃ to form a conductive layer with the thickness of 1 mu m;
step 2: and (3) spinning and coating a silver nanowire dispersion liquid with the concentration of 1.5% (wherein the diameter of the silver nanowire is 30nm, and the length of the silver nanowire is 20 micrometers) on the graphene conductive layer, and drying to form a conductive structure.
Comparative example 1
A20 # wire rod is adopted to coat a high-molecular conductive polymer PEDOT/PSS on the surface of a PET substrate, and the PET substrate is placed in a 130 ℃ oven for 10min to form a conductive high-molecular polymer film layer with the thickness of 2 microns.
Comparative example 2
And (3) coating the dispersion of the nano-silver particles with the particle size of 3 mu m on a PET substrate in a spinning way, wherein the mass percentage of the nano-silver particles is 5%, and drying to form the nano-silver particle conductive layer.
Comparative example 3
And (3) coating the graphene slurry on a PET (polyethylene terephthalate) base material by scraping, and drying at 130 ℃ to form the graphene dry film conducting layer.
The relevant performance parameters of the conductive structures in examples 1 to 6 and comparative examples 1 to 3 of the nano silver wires which were respectively brushed for 1 time were measured, and the specific results are shown in table 2.
TABLE 2 Performance parameters of the conductive structures of examples 1-6 and the conductive layers of comparative examples 1-3
| Numbering | Square resistance, omega/□ | Transmittance of | Haze% | Thickness, μm |
| Example 1 | 10 | 72 | 20 | 2.0 |
| Example 2 | 1.8 | 38.8 | 31.2 | 1 |
| Example 3 | 1.2 | 33.7 | 35.2 | 1.5 |
| Example 4 | 0.6 | 12.1 | 56.3 | 2.7 |
| Example 5 | 1.0 | 26.7 | 44.8 | 5.5 |
| Example 6 | 1.3 | 10 | 89 | 0.3 |
| Comparative example 1 | 60 | 80 | 14 | 2.0 |
| Comparative example 2 | ∞ | 73.4 | 20.6 | 5.5 |
| Comparative example 3 | 5 | 7 | 97 | 0.3 |
As can be seen from the above, in the conductive structure in the embodiment of the present application, the conductive medium layer and the first metal nanowire layer are sequentially stacked in the vertical direction, so that the thickness and the transmittance of the conductive structure are relatively large, the sheet resistance and the haze are relatively small, and the performance of the conductive structure in each aspect of the embodiment is excellent.
Although the present disclosure has been described and illustrated in greater detail by the inventors, it should be understood that modifications and/or alterations to the above-described embodiments, or equivalent substitutions, will be apparent to those skilled in the art without departing from the spirit of the disclosure, and that no limitations to the present disclosure are intended or should be inferred therefrom.
Claims (10)
1. The conductive structure is characterized by comprising a substrate, a conductive medium layer and a first metal nanowire layer which are sequentially stacked, wherein the light transmittance of the conductive medium layer per unit thickness is greater than that of the first metal nanowire layer per unit thickness.
2. The conductive structure of claim 1, wherein a thickness of the conductive dielectric layer is greater than a thickness of the first metal nanowire layer.
3. The conductive structure of claim 1, wherein a hole is formed in the conductive medium layer and extends along the first metal nanowire layer in a direction towards the conductive medium layer, and the hole is filled with metal nanowires.
4. The conductive structure of claim 1, further comprising a second metal nanowire layer disposed in a stack on a side of the conductive dielectric layer distal from the first metal nanowire layer.
5. The conductive structure of claim 1, wherein the length of the metal nanowires in the first metal nanowire layer is 5-50 μm.
6. The conductive structure of claim 1, wherein the conductive dielectric layer comprises at least one of a conductive resin, a metal nanoparticle, and a conductive carbon nanomaterial.
7. The conductive structure of claim 6, wherein the metal nanoparticles have a size of 10nm to 10 μm.
8. The conductive structure of any of claims 1-7, wherein the conductive structure has a light transmittance of greater than 10%.
9. The conductive structure of any of claims 1-7, wherein the sheet resistance of the conductive structure is 0.1-10 Ω/□.
10. An electronic device comprising the conductive structure of any one of claims 1-9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242912A (en) * | 2021-12-02 | 2022-03-25 | 昆山工研院新型平板显示技术中心有限公司 | Light emitting device and display panel |
| CN114242912B (en) * | 2021-12-02 | 2024-04-30 | 昆山工研院新型平板显示技术中心有限公司 | Light emitting device and display panel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242912A (en) * | 2021-12-02 | 2022-03-25 | 昆山工研院新型平板显示技术中心有限公司 | Light emitting device and display panel |
| CN114242912B (en) * | 2021-12-02 | 2024-04-30 | 昆山工研院新型平板显示技术中心有限公司 | Light emitting device and display panel |
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