TW202102628A - Method for manufacturing water transfer printable conductive membrane and water transfer printable conductive membrane manufactured thereof, and wearable component, light-emitting component and wearable light-emitting device using the water transfer printable conductive membrane - Google Patents

Abstract

The present invention provides a method for manufacturing water transfer printable conductive membrane and a water transfer printable conductive membrane made by the method. The water transfer printable conductive membrane can be adhered to articles with non-conventional surface or conventional substrate surface so that the article can be conductive, which benefits the water transfer printable conductive membrane be applied for producing wearable component, light-emitting component and wearable light-emitting device.

Description

Manufacturing method of water transfer conductive adhesive film, water transfer conductive adhesive film manufactured therefrom, and wearable element, light emitting element and wearable light emitting device using the water transfer conductive adhesive film

The present invention relates to a method for manufacturing a water transfer conductive adhesive film, and the manufactured water transfer conductive adhesive film can be used as a wearable element, a light-emitting element, and a wearable light-emitting device.

With the continuous advancement of technology, people have begun to pursue electronic devices that are lighter, thinner, smarter, and are both beautiful and practical. This is especially true after the advent of smart phones, and wearable electronic components have begun to receive major trends with the upsurge of smart devices. The attention of laboratories, state agencies, technology companies, etc. Materials for wearable electronic components need to have two major characteristics-flexibility and stretchability. Flexibility allows users to do whatever they want without causing inconvenience to the user’s exercises, while stretchability is an extension of flexure, when the user stretches, breathing and other large movements cause the clothes to stretch , There can be considerable correspondence.

At present, the materials of wearable electronic components are stretchable conductive films, including fiber structure conductive films and thin film structure conductive films. The fiber-structure conductive film is made by dipping elastic fibers in a solution containing conductive particles, and then using the elastic fibers to knit and form an elastic fabric that has the characteristics of conductivity and bending. The thin-film structured conductive film is made from an elastic polymer material into an elastic polymer film, and then the elastic polymer film is surface-treated to form a conductive layer; the surface treatment method is to modify the surface of the elastic polymer film. After quality, the conductive material is placed on the surface of the elastic polymer film by spin coating, spray coating, or spray plating to form a conductive layer. Compared with the film structure conductive film, although the fiber structure conductive film has the advantages of air permeability, large stretch range and better wearability, but the rough surface of the fiber structure is difficult to control, which makes it difficult to improve the processing of electronic components.

Although the thin-film structured conductive film does not have the problem of surface roughness and difficult control of the fiber structured conductive film, the elastic polymer film needs to be a flat surface during the steps of coating, spraying batch coating or spraying conductive materials, otherwise the conductive material will be difficult to control. Uniform distribution results in uneven thickness of the conductive layer, which affects its conductivity. In practical applications, wearable electronic components face many objects that do not have a flat surface. Therefore, the thin-film structure conductive film has limitations in practical applications.

Therefore, based on the ability to prepare a thin-film structured conductive film from an object with an uneven surface, the present invention provides a method for manufacturing a water transfer conductive adhesive film, which has a simple manufacturing process and is suitable for the surface of different transfer materials. In addition, The manufactured water transfer conductive adhesive film has a conductive layer with uniform thickness and can be water transferred to objects on uneven surfaces, which is beneficial to be used as a component of wearable elements, light-emitting elements and wearable light-emitting devices.

That is, the object of the present invention is to provide a method for manufacturing a water transfer conductive adhesive film, the steps of which include: (a) spin-coating an adhesive layer composition on a substrate layer to form an adhesive layer; (b) Spin-coating a polydimethylsiloxane on the adhesive layer and heating, so that the polydimethylsiloxane forms a polydimethylsiloxane layer; and (c) the polydimethylsiloxane After the surface of the silicone layer is treated with plasma, a conductive composition is sprayed to form a conductive layer.

In a preferred embodiment, the heating is vacuum heating.

In a preferred embodiment, the surface of the polydimethylsiloxane layer contacting the conductive layer is treated with plasma.

In a preferred embodiment, the conductive layer is metal nanoparticle, metal nanowire, or carbon nanotube.

In a preferred embodiment, the metal of the nano metal particles and the nano metal wire is silver or copper.

In a preferred embodiment, the adhesive layer is polyvinylpyrrolidone.

Another object of the present invention is to provide a wearable device comprising a wearing part and a water transfer conductive adhesive film as described above; wherein, the adhesive layer of the water transfer conductive adhesive film is attached to the At least one surface of the wearing piece.

Another object of the present invention is to provide a light-emitting element, which sequentially includes a water transfer conductive adhesive film as described above, an electric transmission layer, a light-emitting layer and a cathode; wherein the water transfer conductive adhesive The conductive layer of the film will contact the electrokinetic transmission layer.

Another object of the present invention is to provide a wearable light-emitting device, which includes a wearable and a light-emitting element as described above; wherein the adhesive layer of the water-transfer conductive adhesive film of the light-emitting element is attached to the At least one surface of the wearing piece.

Compared with the prior art, the manufacturing method of the water transfer conductive adhesive film of the present invention is simple in the manufacturing process; in addition, the water transfer conductive adhesive film of the present invention can be attached to the surface of different transfer materials, that is, it can It is used on flat or non-flat surfaces. There is no need for organic solvents, mechanical force and hot pressing during water transfer, so it is easy and convenient to use, and the conductive layer formed is uniform and flat, and has good conductivity. Based on this, the water transfer conductive sticker of the present invention has the advantages of optical transparency, non-toxicity, low chemical reactivity and elasticity, and is beneficial to be applied to wearable devices, light-emitting devices and wearable light-emitting devices.

The following description of the present invention is that a person skilled in the art can easily understand the necessary technology of the invention, and as long as it does not violate the spirit and scope of the invention, the invention can be variously changed and modified to adapt to different uses and conditions. In this way, other embodiments are also included in the scope of the patent application.

The detailed description and technical content of the present invention will now be described in conjunction with the drawings as follows. Furthermore, the figures in the present invention are not necessarily drawn according to actual proportions for the convenience of description, and these figures and their proportions are not used to limit the scope of the present invention, and are described here first.

As shown in Figure 1, the method for manufacturing a water transfer conductive adhesive film of the present invention includes: (a) Using a spin coater 5, spin coating an adhesive layer composition on a substrate layer 1 to form An adhesive layer 2; (b) Using a spin coater 5, a polydimethylsiloxane (PDMS) is spin-coated on the adhesive layer 2 and heated (the heating step is omitted in the figure) to make the Polydimethylsiloxane is used to form a polydimethylsiloxane layer 3; and (c) using a plasma processing instrument 18, the surface of the polydimethylsiloxane layer 3 is treated with plasma and then The spraying machine 6 sprays a conductive composition 4'on the polydimethylsiloxane layer 3 to form a conductive layer 4, which completes the water transfer conductive adhesive film 100 of the present invention.

In the above steps (a) and (b), the spin coating can be a general spin coating method, and the spin coating time depends on the required thickness of the adhesive layer 2 and the polydimethylsiloxane layer 3 Setting: The rotation speed is about 1500~2500 rpm, preferably 1800~2200 rpm, more preferably 2000 rpm.

In the above step (b), the heating can be a general heating method, preferably a vacuum heating method, but the present invention is not limited to this, the heating temperature is 60~80°C, preferably 65~75°C, more It is preferably 70°C, and the heating time is 50 to 70 minutes, preferably 55 to 75 minutes, and more preferably 60 minutes.

In the above step (c), the plasma treatment can be a general plasma treatment method, such as thermal plasma treatment (ie, high temperature plasma treatment) or non-thermal plasma treatment (ie, low temperature plasma treatment), but the present invention is not limited to And so on.

In the above step (c), the spraying can be a general spraying method, such as air spraying, airless spraying, electrostatic spraying, etc., but the present invention is not limited to these. The spraying time may need to be adjusted due to the required thickness of the conductive layer 4, and is usually 5 to 30 seconds.

In the above-mentioned manufacturing method, the substrate layer 1 may be a substrate layer commonly used for release films, preferably having elasticity, such as polyethylene terephthalic acid (PET), and the present invention is not limited to this.

As shown in FIG. 2, the water transfer conductive adhesive film 100 obtained by the above-mentioned manufacturing method sequentially includes an adhesive layer 2 and a polydimethylsiloxane layer on the surface of the substrate layer 1. 3 and a conductive layer 4.

In the present invention, the "viscous composition" is a solution containing a viscous layer material, generally an organic solvent. The adhesive layer material can be a general adhesive layer material, including polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA), polyethylene oxide, polysaccharide, and polyvinyl amine , Chitosan, polylysine, polyacrylic acid, polyalginic acid, polyhyaluronic acid, carboxyl cellulose, etc. The present invention is not limited to these. Vinylpyrrolidone (PVP) is preferred; the organic solvent can be alcohols, ketones, amides, esters or ethers, etc., such as methanol, acetone, isopropanol, formazan or vinyl acetate, etc., but The present invention is not limited to these, and methanol is preferred among them. The content of the adhesive layer material in the solvent is 10-30 wt%, preferably 15-25 wt%, more preferably 20 wt%.

In the present invention, the thickness of the "adhesive layer" is 20-100 nm, for example, it can be 20 nm, 30 nm, 40 nm, 50 nm, 60 nm, 70 nm, 80 nm, 90 nm, 100 nm, and 50 nm is preferred.

In the present invention, the "polydimethylsiloxane layer" is used as a transparent elastic layer. After the surface is treated with plasma, the contact angle with water will decrease, thereby increasing the hydrophilicity; as shown in Figure 3 , Figure 3(a) is a polydimethylsiloxane layer without plasma treatment on the surface, the contact angle of water is 98°, and Figure 3(b) is a polydimethylsiloxane layer with plasma treatment on the surface Layer, the contact angle of water is 8°. After the surface of the polydimethylsiloxane layer is treated with plasma, the contact angle between the surface and water is reduced, and the contact area between water and the surface is increased, that is, the hydrophilicity of the surface is improved, and then the conductive composition is sprayed When the conductive composition is formed, there will be no agglomerates overlapped between the conductive components, that is, there will be no droplet-shaped conductive composition formed on the surface of the polydimethylsiloxane layer 3, making the formed conductive layer difficult to conduct electricity . Therefore, the polydimethylsiloxane layer after plasma treatment can be sprayed to form a uniform conductive layer and provide good conductivity. The thickness of the polydimethylsiloxane layer is 10-50 um, preferably 30 um.

In the present invention, the "conducting layer composition" is a solution containing a conductive material or a solid composition of a conductive material. The conductive material can be a general conductive material, including nanowires, carbon nanotubes, or nanotubes. Metal particles, etc. The metal of the nano metal wires and nano metal particles is silver or copper, but the present invention is not limited to these. Silver nano wires are preferred, and the wire diameter of the silver nano wires is 10-100 nm, 30~80 nm is preferred, 55~75 nm is more preferred, and the line length is 5~50μm, 10~30μm is preferred, and 10~20μm is more preferred. When the conductive layer composition is a solution containing conductive materials, the solvent can be an organic solvent, such as alcohols, ketones, amines, esters or ethers, etc., such as methanol, acetone, isopropanol, methyl alcohol, etc. Amine or vinyl acetate, etc., but the present invention is not limited to these. Among them, isopropanol is preferred; the content of the conductive material is 0.02~0.1 mg/ml, preferably 0.05~0.09 mg/ml, 0.066 mg /ml is better.

In the present invention, the thickness of the "conductive layer" is 2-10 um, and preferably 5 um.

The method of using the water transfer conductive adhesive film 100 of the present invention, as shown in FIG. 4, wet the surface of the object 8 to be transferred with water 7, and remove the substrate layer 1 of the water transfer conductive adhesive film 100 (FIG. In the formula, this step is omitted), the water transfer conductive adhesive film 100 is attached to the surface of the object 8 with the surface with the adhesive layer 2. The adhesive layer 2 will become sticky after being dissolved in water 7. The tension of the water pulls the water transfer conductive adhesive film 100 apart to form a flat and smooth surface, that is, the water transfer conductive adhesive film 100 is water-transferred to the surface of the object 8, and the surface of the object 8 will be conductive. Sex. The water 7 used for wetting the surface of the object to be transferred is preferably distilled water, which does not have impurities to interfere with the water transfer.

The water transfer conductive adhesive film 100 of the present invention can be directly attached to an object and used as an electronic component, or combined with other electronic components as an electronic device. For example, the water transfer conductive adhesive film 100 can be directly water-transferred to The human skin surface is used as an electronic skin to detect human physiological parameters (such as blood oxygen level or pulse, etc.); or the water transfer conductive adhesive film 100 is transferred to the wearable and used as a wearable element, a light-emitting element or a wearable Electronic devices such as light-emitting devices, and the present invention is not limited to these.

The wearable device of the present invention includes a wearable part and the water transfer conductive adhesive film of the present invention, and the adhesive layer of the water transfer conductive adhesive film is attached to at least one surface of the wearable part. That is, the manufacturing method of the wearable device of the present invention is to transfer the water transfer conductive adhesive film to the wearable article. Wherein, the wearing piece is any object that can be worn on a living body, such as gloves, bracelets, clothes, gloves, hats or collars, etc., and the present invention is not limited to these.

As shown in FIG. 5, the light-emitting element 200 of the present invention includes the water-transferred conductive adhesive film 100, an electric transmission layer 10, a light-emitting layer 11, and a cathode 12 in order from bottom to top, wherein the water-transferred conductive sticker The attached film 100 contacts the electromotive transmission layer 10 with its conductive layer 4. The method of manufacturing the light-emitting element is to spin-coat the conductive layer 4 of the water transfer conductive adhesive film 100 to form a motorized transmission layer 10, then spin-coat to form a light-emitting layer 11, and set it on the light-emitting layer 11 One electrode 12. When the light-emitting element 200 is transferred to the surface of an object 9 by water and is electrically connected, it can be energized to emit light. The conductive layer 4 of the transfer conductive adhesive film 100 is used as an electrode, and additional conductive elements may be added as needed to assist electrical connection, such as copper tape (not shown in the drawing). Further, a protective film 13 can be added to the light-emitting element 200 to protect the light-emitting element 200 from being damaged. A specific example of the protective film 13 can be a 3M elastic sticker.

As shown in FIG. 6, the wearable light-emitting device 300 of the present invention includes a wearing part 14 (taking a glove as an example) and the light-emitting element 200. The light-emitting element 200 is an adhesive layer ( (Not shown in the drawing) attached to at least one surface of the wearing piece 14. That is, the manufacturing method of the wearable light-emitting device 300 of the present invention is to transfer the light-emitting element 300 to the wearing part 14 through water. Wherein, the wearing part 14 is any thing that can be worn on a living body, such as gloves, bracelets, clothes, gloves, hats or collars, etc., and the present invention is not limited to these. [ Specific Examples ]

The following embodiments should not be regarded as excessively limiting the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can modify and change the embodiments discussed herein without departing from the spirit or scope of the present invention, and still fall within the scope of the present invention.

The test materials of the following examples and test examples: l Polyvinylpyrrolidone (PVP, brand: Alfa Aesar, molecular weight (Mw) is about 1,300,000) l Polydimethylsiloxan (Polydimethylsiloxan, PDMS, brand: DOW-CORNING, SYGARD-184AB) l Silver nanowire (AgNW, wire diameter: 55~75 nm, wire length: 10 ~ 20 μm; brand: Zhejiang Kechuang, AW060) l Isopropyl alcohol (IPA, anhydrous, 99.5%) l Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (poly(3,4-ethylenedioxythiophene):polystyrene sulfonate, PEDOT:PSS, brand: UniRegion Bio-Tech, UR-PH1000) l Poly[9,9-dioctylfluorenyl-2,7-diyl] (Poly[9,9-dioctylfluorenyl-2,7-diyl], PFO, brand: American Dye Source, ADS129BE) l Lithium trifluoromethanesulfonate (trifluoromethanesulfonate, LiTf, 99.995%) l Methanol (HPLC, 99.9%) l Eutectic gallium-indium (EGaIn, 99.99%, brand: Sigma-Aldrich) l ITO film (thickness 150 nm)

In the following test examples, ΔR is the resistance change value, that is, the resistance value of the test sample after external stress is subtracted from the resistance value of the test sample without external stress; R ₀ is the resistance value without external stress, which The comparison between the two is the resistance ratio (ΔR/R ₀ ); the external stress can be the stress of bending, shrinking, or expanding the test sample.

I. Water transfer conductive adhesive film

Example 1. Manufacture water transfer conductive adhesive film AgNW-PDMS-5

Steps: (a) Use a spin coater (Olink, OT-SP102) to spin coat 20 wt% polyvinylpyrrolidone (PVP) on the surface of the polyethylene terephthalic acid (PET) substrate layer at a speed of 2000 rpm per minute ) Methanol solution to form a viscous layer. (b) Use a spin coater (Olink, OT-SP102) to spin coat polydimethylsiloxane (PDMS) on the surface of the adhesive layer of polyvinylpyrrolidone at a speed of 2000 rpm per minute, and then Heat to 70°C in a vacuum environment for 1 hour to form an elastic layer. Subsequently, the surface of the elastic layer of the polydimethylsiloxane is treated by a plasma treatment device. (c) Using a spray gun (FUSO SEIKI CO., LTD, 033G-Double Action) at 45 psi and a spraying distance of 10 cm, spray 0.066 mg/ml isopropyl alcohol solution (AgNW) of silver nanowires on the polymer On the elastic layer of dimethylsiloxane, the spraying time is 5 seconds to form the conductive layer, that is, the water transfer conductive adhesive film AgNW-PDMS-5 is completed.

Example 2. Manufacture water transfer conductive adhesive film AgNW-PDMS-15

The manufacturing steps are the same as those in the above-mentioned embodiment 1, the only difference is that the spraying time in step (c) is 15 seconds, that is, the water-transferred conductive adhesive film AgNW-PDMS-15 is completed.

Example 3. Manufacture water transfer conductive adhesive film AgNW-PDMS-30

The manufacturing steps are the same as those in the above-mentioned embodiment 1, the only difference is that the spraying time in step (c) is 30 seconds, that is, the water-transferred conductive adhesive film AgNW-PDMS-30 is completed.

Test case 1. Example 1 to 3 Water transfer conductive adhesive film AgNW-PDMS-5 , AgNW-PDMS-15 and AgNW-PDMS-30 Surface of conductive layer

Use the field scanning electron microscope (FE-SEM) (Hitachi S-520) to observe the surface of the conductive layer, as shown in Figure 7, Figure 7 (a) to (c) are AgNW-PDMS-5, AgNW-PDMS-15, respectively And the conductive layer surface of AgNW-PDMS-30; among them, the silver nanowire density of AgNW-PDMS-5 is 0.002 mg/cm ² , the silver nanowire density of AgNW-PDMS-15 is 0.055 mg/cm ² , AgNW -PDMS-30 has a silver nanowire density of 0.110 mg/cm ² .

Test case 2. Example 1 to 3 Water transfer conductive adhesive film AgNW-PDMS-5 , AgNW-PDMS-15 and AgNW-PDMS-30 Penetration

The instrument for the transparency test is an ultraviolet/visible light spectrometer (UV) (Shimadzu). The test result is shown in Figure 8. Between the wavelength of 400~700 nm, the highest penetration is AgNW-PDMS-5 (the penetration is about 95%) ), followed by AgNW-PDMS-15 (penetration of about 92%) and AgNW-PDMS-30 (penetration of about 80%), but the penetration of the three is above 70%.

Test case 3. Example 1 to 3 Water transfer conductive adhesive film AgNW-PDMS-5 , AgNW-PDMS-15 and AgNW-PDMS-30 The resistance

The resistance test instrument is a four-point probe measuring instrument. The test results are shown in Figure 9. After 0-20 tests, the lowest resistance is AgNW-PDMS-30 (resistance about 9 Ω/sq), AgNW-PDMS -15 (resistance of about 134 Ω/sq) is the second lowest, and AgNW-PDMS-5 (resistance of about 342 Ω/sq) is the highest.

II. Wearable components

Since the water transfer conductive adhesive film of the present invention can be water transferred to the surface of different wearing parts, as a wearable element, when the user wears the wearable element, it will bend, shrink or stretch due to physical activity. Therefore, the following test examples 4 and 5 are used to test the resistance change of the water transfer conductive adhesive film of the present invention after bending, shrinking or stretching, that is, the change of conductivity.

Test case 4. Resistance change of water transfer conductive adhesive film after bending

Transfer the water transfer conductive adhesive film of the present invention to a polyethylene terephthalic acid (PET) board as a test sample AgNW-PDMS-WTP. The thickness after transfer is about 35μm (without poly-terephthalic acid) The thickness of the dicarboxylic acid layer), where the thickness of the conductive layer is about 5μm. In addition, prepare test samples ITO (150 nm)-PET (150μm) (polyterephthalic acid sheet with a thickness of 150μm coated with a transparent conductive film of 150 nm), AgNW-PET (150μm) (coated with a thickness of 150μm) Polyterephthalate sheet with silver nanowire) and AgNW-PET (100μm) (polyterephthalate sheet coated with silver nanowire with a thickness of 100μm).

As shown in Figure 10, each test sample is bent in half on the center line (in the figure, the water transfer conductive adhesive film AgNW-PDMS-WTP 16 is water transferred to the polyterephthalic acid board 15 as an example, that is, the test Sample AgNW-PDMS-WTP), respectively test the bent and unbent resistance of each sample to obtain the resistance ratio (ΔR/R ₀ ).

The test results are shown in Figure 11. Figure 11(a) shows the resistance ratio (ΔR/R ₀ ) at different bending radii. When the bending radius is less than 6 mm, the resistance ratio of the four samples will increase with the increase of the bending radius ( ΔR/R ₀ ) gradually decreases, the resistance ratio (ΔR/R ₀ ) of the sample AgNW-PDMS-WTP is the lowest, and the sample ITO (150 nm)-PET (150μm) is the highest; Figure 11(b) shows the different bending times The resistance ratio (ΔR/R ₀ ) of the sample AgNW-PDMS-WTP (ΔR/R ₀ ) remained almost unchanged. After the sample AgNW-PET (100μm) was bent about 400 times, the resistance ratio (ΔR/R ₀ ) began to increase, and the sample ITO (150 nm)-PET (150μm) was bent less than about 50 times, and the resistance ratio (ΔR/R ₀ ) increased rapidly; Figure 11(c) is) at different bending angles. resistance ratio (ΔR / R _0), the sample AgNW-PDMS-WTP almost unchanged resistance ratio (ΔR / R _0). It can be seen that the sample AgNW-PDMS-WTP has good cycle reproducibility and can be used on objects with a bending angle of 45°~315°. The resistance ratio (ΔR/R ₀ ) is small, and it is obvious that the resistance will not resist due to bending. The change is large, that is, the conductivity will not change much after bending.

Test case 5. Resistance change of water transfer conductive adhesive film after expansion and contraction

The water transfer conductive adhesive film of the present invention is transferred to the surface of a balloon 17 with a thickness of 300 μm. As shown in FIG. 12, the balloon 17 will repeatedly enter and deflate, and the water transfers the water on the surface of the balloon 17 The transfer conductive adhesive film expands and contracts repeatedly to test its resistance to obtain the resistance ratio (ΔR/R ₀ ).

The test result is shown in Figure 13. As the shrinkage and expansion range increases, the resistance instability of the water transfer conductive adhesive film 100 will increase, but the resistance ratio (ΔR/R ₀ ) is still not high. In addition, regardless of The shrinkage and expansion range is 5 ml, 15 ml or 30 ml, and the resistance change has good cyclic reproducibility. It is obvious that the water transfer conductive adhesive film 100 of the present invention can still maintain a certain resistance after expansion and contraction, that is, maintain Certain conductivity.

III. Wearable light-emitting device

After the conductive layer of the water transfer conductive adhesive film of the present invention is further provided with an electric transmission layer, a light-emitting layer and an electrode, it can be used as a light-emitting element. After the light-emitting element is transferred to a wearable by water, it can be used as a wearable Light-emitting device. When the user wears the wearable light emitting device, the wearable element will be stretched due to physical activity. Therefore, the following test example 6 measures the resistance change of the wearable light emitting device stretched, that is, the conductivity change.

Test case 6. Change in resistance of wearable light-emitting device after shrinkage

The anode of the light-emitting element of this test example is the silver nanowire conductive layer (thickness 5 um) of the water transfer conductive adhesive film of the present invention, the electromotive transmission layer is PEDOT:PSS, the light-emitting layer is PFO/PEO/LiTf and the cathode For eutectic gallium indium (eutectic gallium indium, EGaIn).

After stretching the elastic cloth as a wearable by 20%, the light-emitting element is water-transferred to the surface of the cloth (that is, a wearable light-emitting device), and the current density and luminosity are tested under different voltages; After the elastic fabric was relaxed (that is, no stretch by 20%), the current density and luminosity were tested under different voltages. The test result is shown in Figure 14. Under the condition of stretching 20% and relaxing, the current density and luminosity will increase with the increase of voltage, but the rising curve after relaxation is smoother.

Therefore, the water transfer conductive adhesive film of the present invention has high permeability (80%~95%), low electrical resistance (9Ω~200Ω), and is less affected by external stresses such as bending, shrinkage and expansion, and can be maintained low Resistance, that is, maintaining a certain degree of conductivity, facilitates attachment to wearable devices and light-emitting devices, and when used as light-emitting devices and wearable light-emitting devices, it has good luminescence due to its good conductivity.

The manufacturing method of the water transfer conductive adhesive film of the present invention is simple, and can be completed only by spin coating, plasma treatment and spraying technology. The water transfer conductive adhesive film does not require organic solvents, mechanical force and It can be attached by hot pressing, etc. It has the advantages of optical transparency, non-toxicity, low chemical reactivity and elasticity, which is beneficial for application in wearable devices, light-emitting devices and wearable light-emitting devices or other electronic devices.

The present invention has been described in detail above. However, what has been described above is only a preferred embodiment of the present invention. It should not be used to limit the scope of implementation of the present invention, that is, the scope of the patent application for the present invention is equal. Changes and modifications should still fall within the scope of the patent of the present invention.

100: Water transfer conductive adhesive film 200: light-emitting element 300: Wearable light-emitting device 1: substrate layer 2: Adhesive layer 3: Polydimethylsiloxane layer 4: conductive layer 4’: Conductive composition 5: Spin coater 6: Spraying machine 7: water 8: Object 9: Object 10: Electric transmission layer 11: luminescent layer 12: Cathode 13: Protective film 14: Wearables 15: Water transfer conductive adhesive film AgNW-PDMS-WTP 16: Polyterephthalate board 17: Balloon 18: Plasma processing equipment

FIG. 1 is a schematic diagram of the manufacturing method of the water transfer conductive adhesive film of the present invention.

2 is a schematic diagram of the appearance of the water transfer conductive adhesive film of the present invention.

Figure 3 is a side view of the surface of the polydimethylsiloxane layer of the water transfer conductive adhesive film of the present invention after plasma treatment and without plasma treatment: (a) Polydimethylsiloxane without plasma treatment on the surface Base silicone layer, (b) a polydimethylsiloxane layer whose surface is treated with plasma.

4 is a schematic diagram of the use method of the water transfer conductive adhesive film of the present invention.

Fig. 5 is a schematic diagram of the appearance of the light-emitting device of the present invention.

FIG. 6 is a schematic diagram of the appearance of the wearable light-emitting device of the present invention.

Figure 7 is the water transfer conductive adhesive film AgNW-PDMS-5, AgNW-PDMS-15 and AgNW-PDMS-30 of Examples 1 to 3 of the conductive layer surface field scanning electron microscope (FE-SEM) image: ( a) AgNW-PDMS-5, (b) AgNW-PDMS-15 and (c) AgNW-PDMS-30.

Fig. 8 is a graph showing the change in the penetration curves of the water transfer conductive adhesive films AgNW-PDMS-5, AgNW-PDMS-15 and AgNW-PDMS-30 of Examples 1 to 3.

9 is a graph showing the resistance curve changes of the water transfer conductive adhesive films AgNW-PDMS-5, AgNW-PDMS-15 and AgNW-PDMS-30 of Examples 1 to 3.

FIG. 10 is a schematic diagram of the bending test of the sample in Test Example 4. FIG.

Figure 11 shows the resistance ratio (ΔR/) of the test samples AgNW-PDMS-WTP (35μm), ITO (150 nm)-PET (150μm), AgNW-PET (150μm) and AgNW-PET (100μm) in Test Example 4 after bending. R ₀ ) Curve change graph: (a) Resistance ratio at different bending radii (ΔR/R ₀ ); (b) Resistance ratio under different bending times (ΔR/R ₀ ); (c) Resistance under different bending angles Ratio (ΔR/R ₀ ).

12 is a schematic diagram of the expansion and shrinkage test of the water transfer conductive adhesive film in Test Example 5.

_{13 is a graph showing the resistance ratio (ΔR/R 0} ) curve change of the water transfer conductive adhesive film of Test Example 5 after expansion and contraction.

14 is a graph showing the curve change of current density and luminosity of the wearable light-emitting device under different voltages in Test Example 6.

100: Water transfer conductive adhesive film

1: substrate layer

2: Adhesive layer

3: Polydimethylsiloxane layer

4: conductive layer

Claims (9)

A method for manufacturing water transfer conductive adhesive film, the steps include: (a) Spin-coating an adhesive layer composition on a substrate layer to form an adhesive layer; (b) Spin-coating a polydimethylsiloxane on the adhesive layer and heating it to form a polydimethylsiloxane layer; and (c) After the surface of the polydimethylsiloxane layer is treated with plasma, a conductive composition is sprayed to form a conductive layer. The manufacturing method according to claim 1, wherein the heating is vacuum heating. A water transfer conductive adhesive film, which is made by the manufacturing method of claim 1 or 2, and includes an adhesive layer, a polydimethylsiloxane layer and a conductive layer in sequence. The water transfer conductive adhesive film according to claim 3, wherein the conductive layer is metal nanoparticle, metal nanowire, or carbon nanotube. The water transfer conductive adhesive film according to claim 4, wherein the metal of the nano metal particles and the nano metal wire is silver or copper. The water transfer conductive adhesive film according to any one of claims 3 to 5, wherein the adhesive layer is polyvinylpyrrolidone. A wearable element, comprising a wearable and a water transfer conductive adhesive film according to any one of claims 3 to 6; wherein, the adhesive layer of the water transfer conductive adhesive film is attached to the At least one surface of the wearing piece. A light-emitting element, which sequentially includes a water transfer conductive adhesive film according to any one of claims 3 to 6, an electric transmission layer, a light-emitting layer and a cathode; wherein the water transfer conductive adhesive The conductive layer of the film will contact the electrokinetic transmission layer. A wearable light-emitting device, comprising a wearing part and a light-emitting element according to claim 8; wherein, the adhesive layer of the water transfer conductive adhesive film of the light-emitting element is attached to at least one of the wearing parts surface.

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