CN111966236B - Manufacturing method of flexible touch screen functional sheet and flexible touch screen - Google Patents
Manufacturing method of flexible touch screen functional sheet and flexible touch screen Download PDFInfo
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- CN111966236B CN111966236B CN202010736859.4A CN202010736859A CN111966236B CN 111966236 B CN111966236 B CN 111966236B CN 202010736859 A CN202010736859 A CN 202010736859A CN 111966236 B CN111966236 B CN 111966236B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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Abstract
A manufacturing method of a flexible touch screen functional sheet and a flexible touch screen are provided, wherein the method comprises the following steps: laminating the TCTF coil stock and the pretreated ITO coil stock to obtain a laminated coil stock, wherein the TCTF coil stock comprises a nano silver layer and an insulating layer attached to the nano silver layer, and the insulating layer is attached to an ITO circuit on the ITO coil stock after lamination; sequentially exposing the nano silver layer and the insulating layer of the pressed coil stock; developing the insulating layer to leave a nano silver circuit on the nano silver layer, and curing the developed insulating layer; and washing and printing the cured material to obtain the flexible touch screen functional sheet. By implementing the embodiment of the application, the light, thin and foldable flexible touch screen functional sheet can be produced, and meanwhile, the production cost is reduced.
Description
Technical Field
The application relates to the technical field of touch screens, in particular to a manufacturing method of a flexible touch screen functional sheet and a flexible touch screen.
Background
In recent years, with the continuous update and iteration of electronic products such as smart phones and flat panels, users have greatly demanded foldable flexible screens for the electronic products. However, in practice, it is found that in the existing screen manufacturing technology, the produced touch screen functional sheet often needs to use multiple layers of ITO (Indium Tin Oxide) materials to realize touch positioning, and it is difficult to simultaneously meet the requirements of lightness, thinness, foldability, and the like, and the material cost is relatively high.
Disclosure of Invention
The embodiment of the application discloses a manufacturing method of a flexible touch screen functional sheet and a flexible touch screen, which can be used for producing a light, thin and foldable flexible touch screen functional sheet and reducing the production cost.
The first aspect of the embodiment of the present application discloses a method for manufacturing a flexible touch screen functional sheet, including:
laminating the TCTF coil stock and the pretreated ITO coil stock to obtain a laminated coil stock, wherein the TCTF coil stock comprises a nano silver layer and an insulating layer attached to the nano silver layer, and the insulating layer is attached to an ITO circuit on the ITO coil stock after lamination;
sequentially exposing the nano silver layer and the insulating layer of the pressed coil stock;
developing the insulating layer to leave a nano silver circuit on the nano silver layer, and curing the developed insulating layer;
and washing and printing the cured material to obtain the flexible touch screen functional sheet.
As an optional implementation manner, in the first aspect of this embodiment of the present application, the insulating layer is located between the ITO layer and the nano silver layer, and the insulating layer is used to separate the ITO layer from the nano silver layer.
As another optional implementation manner, in the first aspect of this embodiment of the present application, before the developing the insulating layer, the manufacturing method further includes:
cutting the exposed press-fit coil stock into a press-fit sheet stock;
the developing the insulating layer includes:
and developing the insulating layer of the laminated sheet material.
As another alternative implementation, in the first aspect of the examples of this application, the washing and printing the cured material includes:
washing the surface of the nano silver layer of the cured laminated sheet material with water;
printing a first silver colloid circuit on the pressing sheet stock, wherein the first silver colloid circuit and the ITO circuit form a conducting loop;
printing a second silver colloid circuit on the pressing sheet material, wherein the second silver colloid circuit and the nano silver circuit form a conducting loop;
printing a high-transmittance insulating layer and an ink insulating layer on the laminated sheet material in sequence,
the high-transparency insulating layer covers the second silver adhesive circuit, and the ink insulating layer is located on the high-transparency insulating layer.
As another alternative implementation, in the first aspect of the embodiments of the present application, the printing the first silver paste line on the press-fit sheet includes:
printing first silver adhesive on the surface of the ITO circuit on the pressing sheet material;
pre-baking the laminated sheet material, and exposing the surface of the laminated sheet material printed with the first silver adhesive;
spraying the surface printed with the first silver colloid by using a sodium carbonate solution with a preset concentration to form a first silver colloid circuit;
and curing the first silver adhesive circuit so that the first silver adhesive circuit and the ITO circuit form a conducting loop.
As another alternative implementation, in the first aspect of the embodiments of the present application, the printing the second silver paste line on the press-fit sheet includes:
printing second silver paste on one surface of the nano silver circuit on the press-fit sheet material;
pre-baking the laminated sheet material, and cutting the second silver colloid to form a second silver colloid circuit, wherein the second silver colloid circuit and the nano silver circuit form a conduction loop;
and washing the pressed sheet material with water.
As another alternative, in the first aspect of the embodiments of the present application, the printing of the high-permeability insulating layer and the ink insulating layer on the press sheet material in sequence includes:
printing a high-transmittance insulating material on the surface of the laminated sheet material where the second silver colloid line is located to form a high-transmittance insulating layer so as to protect the first silver colloid line and the second silver colloid line, and drying the high-transmittance insulating layer;
printing ink on the high-transparency insulating layer to form an ink insulating layer, and drying the ink insulating layer.
As another optional implementation manner, in the first aspect of the embodiments of the present application, before the laminating the TCTF roll and the pretreated ITO roll, the manufacturing method further includes:
pressing a dry film and the ITO coil stock to obtain a first coil stock;
exposing the first web;
and developing and etching the first coil stock, and attaching a protective film to obtain the pretreated ITO coil stock.
As another optional implementation manner, in the first aspect of the embodiments of the present application, before the laminating the dry film and the ITO roll to obtain the first roll, the manufacturing method further includes:
respectively carrying out shrinkage treatment on the TCTF coil stock and the ITO coil stock;
respectively printing a first positioning point and a second positioning point on the TCTF coil stock and the ITO coil stock after the shrinkage treatment;
the laminating of the TCTF coil stock and the pretreated ITO coil stock comprises the following steps:
and correspondingly pressing the first positioning point and the second positioning point to press the TCTF coil stock and the ITO coil stock.
The second aspect of the embodiment of the present application discloses a flexible touch screen, which at least comprises a functional sheet manufactured by the manufacturing method of any one of the functional sheets of the flexible touch screen disclosed in the first aspect of the embodiment of the present application, and a protective cover plate attached to the functional sheet.
Compared with the prior art, the embodiment of the application has the following beneficial effects:
in the embodiment of the application, in the process of manufacturing the flexible touch screen functional sheet, a TCTF (Transfer Conductive Transparent Conductive Film) material is used for replacing a part of the structure combining ITO and the optical adhesive, so that the produced functional sheet is lighter and thinner, has better folding performance, and simultaneously reduces consumable materials relative to a multilayer ITO structure. Therefore, by implementing the embodiment of the application, the light, thin and foldable flexible touch screen functional sheet can be produced, and meanwhile, the production cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a method for manufacturing a flexible touch screen functional sheet according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart of another method for manufacturing a functional sheet of a flexible touch screen according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a main structure of a flexible touch screen functional sheet according to an embodiment of the present disclosure in a disassembled state;
fig. 4 is a schematic diagram illustrating a main structure of a flexible touch screen according to an embodiment of the present disclosure in a disassembled state.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the embodiments of the present application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Also, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
In addition, some of the above terms may be used in other meanings than in orientation or position, for example, the term "upper" may be used in some cases to indicate a certain relationship of attachment or connection. The specific meanings of these terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Moreover, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific type and configuration may or may not be the same), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
The embodiment of the application discloses a manufacturing method of a flexible touch screen functional sheet and a flexible touch screen, which can be used for producing a light, thin and foldable flexible touch screen functional sheet and reducing the production cost. The following detailed description is made with reference to the accompanying drawings.
Example one
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for manufacturing a flexible touch screen functional sheet according to an embodiment of the present disclosure. As shown in fig. 1, the manufacturing method may include the steps of:
101. and laminating the TCTF coil stock and the pretreated ITO coil stock to obtain a laminated coil stock, wherein the TCTF coil stock comprises a nano silver layer and an insulating layer laminated on the nano silver layer, and the insulating layer is laminated with the ITO circuit on the ITO coil stock after lamination.
Among them, TCTF (Transfer Conductive Transparent Conductive Film) is a Film type material with high transparency and good conductivity, and may include a nano silver layer and an insulating layer attached on the nano silver layer, wherein the nano silver has good conductivity; ITO (Indium Tin Oxide, tin-doped Indium Oxide) is a commonly used transparent conductive material, and can be used as a circuit substrate of a touch screen functional sheet. It should be noted that both TCTF and ITO have good photosensitivity, i.e. sensitivity to light, so the fabrication process in the embodiment of the present application should be performed in a darkroom as much as possible.
Specifically, after pretreatment, the formed ITO circuit can be reserved on the ITO coil stock. On the basis, the TCTF coil stock and the pretreated ITO coil stock can be pressed in a hot pressing mode, so that the insulating layer of the TCTF coil stock is attached to the ITO circuit on the ITO coil stock after pressing, and the ITO circuit is isolated from the nano silver layer of the TCTF coil stock. It is understood that in other embodiments, a direct pressing method may be used to directly press the TCTF roll material and the pretreated ITO roll material with a higher pressure.
Illustratively, when applying pressure using the application roller, the optimal application roller air pressure may be 0.5 ± 0.05Mpa (Mpa) and the application speed may be 0.8 ± 0.2m/min (meters per minute); when hot pressing is used, it may also be provided that the hot press wheel temperature may be 100 ± 5 ℃ (celsius).
102. And sequentially exposing the nano silver layer and the insulating layer of the pressed coil stock.
Specifically, the nano silver circuit can be formed on the nano silver layer by exposing the nano silver layer first, and the nano silver circuit can be formed through a developing process. Alternatively, the light source for the above exposure may be selected from visible light, ultraviolet light, etc.; specifically, a laser may be selected as the exposure light source to improve the exposure efficiency. On the basis, the insulating layer is exposed and developed, so that partial nano silver attached to the insulating layer and not used for forming the nano silver circuit can be separated, and the nano silver circuit and the ITO circuit can be isolated.
Illustratively, the set energy may be 150 + -10 j/cm when exposing the nano-silver layer 2 (per square centimeter of coke), the measured energy was 130. + -. 30j/cm 2 。
Illustratively, the set energy may be 350 + -50 j/cm when exposing the insulating layer 2 Actually measured energy is 300 +/-50 j/cm 2 。
As an optional implementation manner, after the step 102 is executed, and the nano silver layer and the insulating layer of the pressed roll are sequentially exposed, the pressed roll may be cut into sheet materials, so as to operate the sheet materials with smaller specifications in the subsequent steps, thereby facilitating the finer processing of the lines on the sheet materials, and facilitating the improvement of the precision of the subsequent processing.
103. And developing the insulating layer to leave a nano silver circuit on the nano silver layer, and curing the developed insulating layer.
Specifically, development may generally be performed simultaneously with or continuously with etching, so that the nanosilver layer and the non-wiring region on the insulating layer may be etched away. On the basis, the surface of the developed insulating layer can be quickly cured by ultraviolet irradiation, curing agent addition and other curing modes, so that a stable circuit area is left.
Illustratively, when developing with a sodium carbonate solution, the sodium carbonate concentration may be 10. + -. 0.5g/L (grams per liter), the pH may be 10.5. + -. 1, and the spray pressure may be 1.2. + -. 0.2kg/cm 2 (kilograms per square centimeter), the temperature can be 32 + -1 deg.C, and the developing speed can be 2.2 + -0.3 m/min.
Illustratively, when curing is performed by means of ultraviolet irradiation, the optimum energy may be 500. + -. 50mj/cm 2 (millijoule per square centimeter), speed is 4.0 + -1 m/min, and ultraviolet fleabane number can be 1-2.
104. And washing and printing the cured material to obtain the flexible touch screen functional sheet.
Specifically, for the cured material (pressing roll material or pressing sheet material), residues (such as residual insulating material and the like) may exist on the surface of the nano silver layer, and the residual foreign matter can be cleaned by washing with water, which is beneficial to improving the printing effect of the subsequent printing step. Through printing the silver colloid circuit, a conduction loop can be respectively formed with the ITO circuit and the nano silver circuit; through further printing insulating layer (for example high insulating layer, printing ink insulating layer) etc. can protect the above-mentioned circuit that switches on that forms to accomplish and build the circuit to flexible touch screen function piece, when realizing the touch-control function, realize the flexible collapsible function of flexible touch screen.
Therefore, by implementing the manufacturing method described in the above embodiment, in the process of manufacturing the flexible touch screen functional sheet, the TCTF material is used to replace a part of the structure in which the ITO is combined with the optical adhesive, so that the manufactured functional sheet is lighter and thinner, has better folding performance, and reduces consumables compared with a multilayer ITO structure. Therefore, by implementing the embodiment of the application, the light, thin and foldable flexible touch screen functional sheet can be produced, and meanwhile, the production cost is reduced.
Example two
Referring to fig. 2, fig. 2 is a schematic flow chart illustrating a manufacturing method of another flexible touch screen functional sheet disclosed in the embodiment of the present application. As shown in fig. 2, the manufacturing method may include the steps of:
201. and respectively carrying out shrinking treatment on the TCTF coil stock and the ITO coil stock.
Specifically, the TCTF roll material and the ITO roll material may be fed into an IR (Infrared) furnace, i.e., the TCTF roll material and the ITO roll material may be heated by Infrared rays, and the specifications of the TCTF roll material and the ITO roll material may be stabilized in a size required in a subsequent step according to a principle of expansion with heat and contraction with cold, so that the TCTF roll material and the ITO roll material may be conveniently attached to each other in the subsequent step, which is beneficial to improving the precision of subsequent processing.
202. And respectively printing a first positioning point and a second positioning point on the TCTF coil stock and the ITO coil stock after the shrinkage treatment.
The first positioning point and the second positioning point can be one or more positioning points, and each first positioning point corresponds to the second positioning point one by one, namely, the first positioning points on the TCTF coil stock can be attached to the second positioning points on the ITO coil stock one by one.
Specifically, the first positioning point and the second positioning point may be printed using ink, and then the ink may be dried by an IR oven. The ink can use acid-resistant and alkali-resistant ink, such as conductive ink containing noble metal powder, aqueous acrylic resin ink, etc., to avoid washing in the subsequent steps.
203. And pressing the dry film and the ITO coil stock to obtain a first coil stock.
204. And exposing the first coil stock.
205. And developing and etching the first coil stock, and attaching a protective film to obtain the pretreated ITO coil stock.
In this embodiment, the dry film refers to a protective photosensitive film commonly used in the screen manufacturing process, and is used to adhere to the ITO roll to prevent unnecessary abrasion of the ITO material. By performing the steps 204-205, the dry film is cured, and then developed and etched, so that a formed ITO trace can be formed on the ITO coil material corresponding to the cured area of the dry film. Finally, a protective film is attached to one surface of the ITO coil stock on which the ITO circuit is formed, so that a preprocessed standby ITO coil stock can be obtained, and abrasion to the formed ITO circuit in the process of storing and conveying the ITO coil stock is reduced.
206. And correspondingly pressing the first positioning point and the second positioning point to press the TCTF coil stock and the pretreated ITO coil stock.
Step 206 is similar to step 101, and is not described herein again. It should be noted that, by laminating the first positioning point and the corresponding second positioning point, the TCTF roll material and the pretreated ITO roll material can be laminated in a correct direction and position, which is beneficial to ensuring higher processing precision.
207. And sequentially exposing the nano silver layer and the insulating layer of the pressed coil stock.
Step 207 is similar to step 102, and is not described herein again.
208. And cutting the exposed press-fit coil stock into press-fit sheet stock.
After exposure, the pressing coil stock can be cut into smaller pressing sheet stocks according to the size of the flexible touch screen to be produced, so that the step of constructing a finer circuit for the smaller pressing sheet stocks in the subsequent steps is facilitated.
209. And developing the insulating layer of the laminated sheet material to leave a nano silver circuit on the nano silver layer, and curing the developed insulating layer.
210. And washing the surface of the nano silver layer of the cured laminated sheet material with water.
211. And printing a first silver colloid circuit on the laminated sheet material, wherein the first silver colloid circuit and the ITO circuit form a conducting loop.
Specifically, a first silver paste may be printed on the surface of the laminated sheet where the ITO line is located, wherein the silver paste is an adhesive with good conductivity; then, the pressing sheet stock can be pre-baked, and the surface of the pressing sheet stock printed with the first silver colloid is exposed; next, spraying the surface printed with the first silver paste by using a sodium carbonate solution with a preset concentration to form a first silver paste line; finally, the first silver glue line can be solidified, so that the first silver glue line and the ITO line form a conducting loop.
Alternatively, when the press-fit sheet material is subjected to pre-baking, the press-fit sheet material may be heated by infrared ray using an IR furnace; the baking may be performed by using an oven, hot air, or the like.
Alternatively, when exposing the side printed with the first silver paste, the exposure may be performed using ultraviolet light.
Optionally, after the silver colloid is developed and the circuit is formed, the resin substances in the ink in the pressed sheet materials are dried by heating the oven for a certain time, the impedance of the silver colloid is reduced, and thus the circuit state is achieved, and the circuit solidification is realized.
212. And printing a second silver colloid circuit on the laminated sheet material, wherein the second silver colloid circuit and the nano silver circuit form a conduction loop.
Specifically, the second silver paste may be printed on the surface of the nano-silver circuit on the press-fit sheet; then, pre-baking the laminated sheet material, and cutting the second silver colloid to form a second silver colloid circuit, wherein the second silver colloid circuit and the nano silver circuit form a conduction loop; and finally, washing the laminated sheet material with water to remove residual silver colloid impurities after cutting, thereby obtaining clean laminated sheet material.
As an optional implementation manner, when the second silver paste on the laminated sheet is cut, a strong light source such as a laser may be used for cutting, so as to form a second silver paste line in conduction with the nano silver line.
213. And printing a high-transparency insulating layer and an ink insulating layer on the laminated sheet material in sequence, wherein the high-transparency insulating layer covers the second silver colloid circuit, and the ink insulating layer is positioned on the high-transparency insulating layer.
Specifically, a high-transmittance insulating material may be printed on a surface of the laminated sheet where the second silver colloid line is located, where the high-transmittance insulating material is a material having a light transmittance at least higher than 90%, such as an insulating material compounded by polyethylene, polyethylene terephthalate, and the like, and is used to form a high-transmittance insulating layer to protect the printed first silver colloid line and the printed second silver colloid line; then, the high-transmittance insulating layer can be dried, such as infrared drying by using an IR furnace; next, printing ink can be printed on the high-transmittance insulating layer, wherein the printing ink can include black printing ink to form a printing ink insulating layer, so that the distance from a panel black frame of the flexible touch screen to a visible area can be reduced, a black ground color when the flexible touch screen does not display content is formed, and the visual effect is improved; finally, the ink insulation layer may be dried, such as by heating with an oven.
Therefore, by implementing the manufacturing method described in the above embodiment, a light, thin and foldable flexible touch screen functional sheet can be produced, the process is relatively simple, and a better display effect is achieved.
EXAMPLE III
Fig. 3-4 are also shown, in which fig. 3 is a schematic diagram illustrating a main structure of a flexible touch screen functional sheet disclosed in the embodiment of the present application in a disassembled manner, and fig. 4 is a schematic diagram illustrating a main structure of a flexible touch screen disclosed in the embodiment of the present application in a disassembled manner. In this embodiment, the flexible touch screen may include a functional sheet 10 and a protective cover plate 20 attached to the functional sheet, where the functional sheet 10 may be manufactured by the method for manufacturing the functional sheet of the flexible touch screen described in the first or second embodiment of the present application, and includes an ITO layer 11, an insulating layer 12, a nano-silver layer 13, a high-transmittance insulating layer 14, and an ink insulating layer 15. It can be understood that the ITO layer 11 may include an ITO line and a first silver paste line forming a conducting loop, the nano-silver layer 13 may include a nano-silver line and a second silver paste line forming a conducting loop, and the ITO layer 11 and the conducting loop on the nano-silver layer 13 respectively form a line foundation for the functional sheet 10 to implement a touch function.
Through adopting this embodiment, can make the flexible touch screen function piece of producing more frivolous, possess better folding performance, also reduced the consumptive material simultaneously for multilayer ITO structure to can produce frivolous, folding flexible touch screen, reduce manufacturing cost simultaneously.
The method for manufacturing the flexible touch screen functional sheet and the flexible touch screen disclosed in the embodiment of the application are introduced in detail, a specific example is applied in the text to explain the principle and the implementation of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. A manufacturing method of a flexible touch screen functional sheet is characterized by comprising the following steps:
laminating the TCTF coil stock and the pretreated ITO coil stock to obtain a laminated coil stock, wherein the TCTF coil stock comprises a nano silver layer and an insulating layer attached to the nano silver layer, and the insulating layer is attached to an ITO circuit on the ITO coil stock after lamination;
sequentially exposing the nano silver layer and the insulating layer of the pressed coil stock;
cutting the exposed press-fit coil stock into a press-fit sheet stock;
developing the insulating layer of the laminated sheet material to leave a nano silver circuit on the nano silver layer, and curing the developed insulating layer;
washing the surface of the nano silver layer of the cured laminated sheet material with water; printing a first silver colloid circuit on the pressing sheet stock, wherein the first silver colloid circuit and the ITO circuit form a conducting loop; printing a second silver colloid circuit on the pressing sheet stock, wherein the second silver colloid circuit and the nano silver circuit form a conducting loop; and printing a high-transparency insulating layer and an ink insulating layer on the laminated sheet material in sequence to obtain the flexible touch screen functional sheet, wherein the high-transparency insulating layer covers the second silver adhesive circuit, and the ink insulating layer is positioned on the high-transparency insulating layer.
2. The method of claim 1, wherein the insulating layer is located between the ITO layer and the nano-Ag layer, and the insulating layer is used for isolating the ITO layer from the nano-Ag layer.
3. The method of claim 1, wherein said printing a first silver paste line on said laminated sheet includes:
printing first silver adhesive on one surface of the ITO circuit on the pressing sheet stock;
pre-baking the laminated sheet material, and exposing the surface of the laminated sheet material printed with the first silver adhesive;
spraying the surface printed with the first silver colloid by using a sodium carbonate solution with a preset concentration to form a first silver colloid circuit;
and curing the first silver colloid circuit so that the first silver colloid circuit and the ITO circuit form a conducting loop.
4. The method of claim 1, wherein said printing a second silver paste line on said laminated sheet material comprises:
printing second silver paste on one surface of the nano silver circuit on the press-fit sheet material;
pre-baking the press-fit sheet stock, and cutting the second silver colloid to form a second silver colloid circuit, wherein the second silver colloid circuit and the nano silver circuit form a conducting loop;
and washing the pressed sheet material with water.
5. The method of claim 1, wherein said sequentially printing a high-permeability insulating layer and an ink insulating layer on said laminated sheet comprises:
printing a high-transmittance insulating material on the surface of the laminated sheet material where the second silver colloid line is located to form a high-transmittance insulating layer so as to protect the first silver colloid line and the second silver colloid line, and drying the high-transmittance insulating layer;
printing ink on the high-transparency insulating layer to form an ink insulating layer, and drying the ink insulating layer.
6. The method of claim 1, wherein prior to laminating the TCTF roll to the pretreated ITO roll, the method further comprises:
pressing a dry film and the ITO coil stock to obtain a first coil stock;
exposing the first web;
and developing and etching the first coil stock, and attaching a protective film to obtain the pretreated ITO coil stock.
7. The manufacturing method according to claim 6, wherein before the pressing the dry film and the ITO roll to obtain the first roll, the manufacturing method further comprises:
respectively carrying out shrinkage treatment on the TCTF coil stock and the ITO coil stock;
respectively printing a first positioning point and a second positioning point on the TCTF coil stock and the ITO coil stock after the shrinkage treatment;
the laminating of the TCTF coil stock and the pretreated ITO coil stock comprises the following steps:
and correspondingly pressing the first positioning point and the second positioning point to press the TCTF coil stock and the ITO coil stock.
8. A flexible touch screen, characterized in that the flexible touch screen at least comprises a functional sheet manufactured by the method for manufacturing the functional sheet of the flexible touch screen according to any one of claims 1 to 7, and a protective cover plate attached to the functional sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010736859.4A CN111966236B (en) | 2020-07-28 | 2020-07-28 | Manufacturing method of flexible touch screen functional sheet and flexible touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010736859.4A CN111966236B (en) | 2020-07-28 | 2020-07-28 | Manufacturing method of flexible touch screen functional sheet and flexible touch screen |
Publications (2)
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