CN108733243B - Method for manufacturing touch screen based on nano silver film - Google Patents
Method for manufacturing touch screen based on nano silver film Download PDFInfo
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- CN108733243B CN108733243B CN201710249063.4A CN201710249063A CN108733243B CN 108733243 B CN108733243 B CN 108733243B CN 201710249063 A CN201710249063 A CN 201710249063A CN 108733243 B CN108733243 B CN 108733243B
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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
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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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- Position Input By Displaying (AREA)
- Manufacturing Of Electric Cables (AREA)
Abstract
The application discloses a method for manufacturing a touch screen based on a nano silver film, which comprises the following steps: manufacturing a nano silver film in a window area of the touch screen to form a window area conductive wire; coating conductive adhesive on a non-window area of the touch screen, communicating the conductive wiring of the window area with the FPC wiring, and removing bubbles in the conductive adhesive; and baking and curing the conductive adhesive. The manufacturing method of the touch screen based on the nano-silver film can solve the problem of poor contact resistance of the nano-silver film, does not need to add equipment, is manufactured by adopting a conventional process, and can save production cost.
Description
Technical Field
The invention belongs to the technical field of touch screens, and particularly relates to a method for manufacturing a touch screen based on a nano silver film.
Background
At present, the nano silver wire conductive film is used as a material for replacing an ITO conductive film, has a wide market, and is not influenced by the size due to lower impedance and excellent bending resistance, so that the nano silver wire conductive film is more suitable for being applied to curved surfaces and flexible screens.
However, the nano silver conductive thin film has the following problems: the nano silver conductive film has poor contact with other conductive substances, and easily causes unstable contact resistance.
Disclosure of Invention
In order to solve the problems, the invention provides a method for manufacturing a touch screen based on a nano silver film, which can solve the problem of poor contact resistance of the nano silver film, does not need to add equipment, is manufactured by adopting a conventional process, and can save production cost.
The invention provides a method for manufacturing a touch screen based on a nano silver film, which comprises the following steps:
manufacturing a nano silver film in a window area of the touch screen to form a window area conductive wire;
coating conductive adhesive on a non-window area of the touch screen, communicating the conductive wiring of the window area with the FPC wiring, and removing bubbles in the conductive adhesive;
and baking and curing the conductive adhesive.
Preferably, in the method for manufacturing a touch screen based on a nano silver film, the step of removing the bubbles in the conductive adhesive is as follows:
and applying air pressure higher than a standard atmospheric pressure value to the conductive adhesive, keeping the pressure for a preset time, and removing air bubbles in the conductive adhesive.
Preferably, in the above method for manufacturing a touch screen based on a nano-silver film, the applying an air pressure higher than a standard atmospheric pressure value to the conductive adhesive is performed for a preset time:
applying a pressure of 1.5 to 6 times the standard atmospheric pressure value to the conductive paste for at least 20 minutes.
Preferably, in the method for manufacturing a touch screen based on a nano-silver thin film, the step of coating a conductive adhesive on a non-window area of the touch screen is as follows:
and coating laser photoresist or photosensitive silver adhesive on the non-window area of the touch screen.
Preferably, in the method for manufacturing a touch screen based on a nano-silver thin film, the manufacturing of the nano-silver thin film in the window area of the touch screen includes:
and manufacturing the nano silver film in the window area of the touch screen by utilizing a yellow light process or a laser process.
Preferably, in the method for manufacturing a touch screen based on a nano-silver thin film, the touch screen is a capacitive screen or a resistive screen.
According to the above description, the method for manufacturing the touch screen based on the nano silver film provided by the invention includes manufacturing the nano silver film in the window area of the touch screen to form the conductive routing in the window area; coating conductive adhesive on a non-window area of the touch screen, communicating the conductive wiring of the window area with the FPC wiring, and removing bubbles in the conductive adhesive; the conductive adhesive is baked and cured, so that the problem of poor contact resistance of the nano-silver film can be solved, equipment does not need to be added, the conductive adhesive is manufactured by adopting a conventional process, and the production cost can be saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a first method for manufacturing a touch screen based on a nano-silver thin film according to an embodiment of the present application.
Detailed Description
The core idea of the invention is to provide a method for manufacturing a touch screen based on a nano-silver film, which can solve the problem of poor contact resistance of the nano-silver film, does not need to add equipment, adopts a conventional process for manufacturing, and can save production cost.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Fig. 1 shows a method for manufacturing a first touch screen based on a nano-silver thin film according to an embodiment of the present application, where fig. 1 is a schematic diagram of the method for manufacturing the first touch screen based on the nano-silver thin film according to the embodiment of the present application, and the method includes the following steps:
s1: manufacturing a nano silver film in a window area of the touch screen to form a window area conductive wire;
the nano silver film comprises nano silver wires and a filling material, the nano silver wires are used as a conductive layer and coated on a bearing layer, the sheet resistance can be below 100 omega/sq, and the nano silver film has the advantages of high transmittance, good optical performance, good linearity and excellent conductivity.
S2: coating conductive adhesive on a non-window area of the touch screen, communicating the conductive wiring of the window area with the FPC wiring, and removing bubbles in the conductive adhesive;
it should be noted that, the step of removing the bubbles may adopt a pressurization mode or a vacuum pumping mode, and the step is not limited herein, so that the bubbles between the conductive adhesive and the nano silver film can be extruded out, thereby the conductive adhesive and the nano silver wire in the nano silver film are well conductive, and the problem of poor resistance contact of the nano silver conductive material is solved.
S3: and baking and curing the conductive adhesive.
As can be seen from the above description, in the first method for manufacturing a touch screen based on a nano silver film provided in the embodiment of the present application, the nano silver film is manufactured in the window area of the touch screen, so as to form a conductive trace in the window area; coating conductive adhesive on a non-window area of the touch screen, communicating the conductive wiring of the window area with the FPC wiring, and removing bubbles in the conductive adhesive; the conductive adhesive is baked and cured, so that the problem of poor contact resistance of the nano-silver film can be solved, equipment does not need to be added, the conductive adhesive is manufactured by adopting a conventional process, and the production cost can be saved.
The second method for manufacturing a touch screen based on a nano-silver film provided by the embodiment of the application is based on the first method for manufacturing a touch screen based on a nano-silver film, and further includes the following technical features:
the step of removing the bubbles in the conductive adhesive is as follows:
and applying air pressure higher than a standard atmospheric pressure value to the conductive adhesive, keeping the pressure for a preset time, and removing air bubbles in the conductive adhesive.
Specifically, the touch screen can be placed in high-voltage resistant equipment, and the touch screen can be extruded out by adding larger pressure to extrude bubbles in the conductive adhesive to tightly press the nano silver film and the conductive adhesive so as to enable the nano silver film and the conductive adhesive to be in closer contact, thereby ensuring better electrical contact of the nano silver film and the conductive adhesive and improving the product yield and the stability in working.
The third method for manufacturing a touch screen based on a nano-silver film provided by the embodiment of the application is based on the second method for manufacturing a touch screen based on a nano-silver film, and further includes the following technical features:
applying air pressure higher than a standard atmospheric pressure value to the conductive adhesive, and keeping the preset time as follows:
applying a pressure of 1.5 to 6 times the standard atmospheric pressure value to the conductive paste for at least 20 minutes.
Specifically, the touch screen may be placed in a high pressure resistant apparatus, the temperature is raised to 65 ℃, and then the pressure is increased to 6.5kgf/cm2Keeping for 30min, then reducing the pressure, taking out, baking the silver colloid and normally manufacturing the product.
The fourth method for manufacturing a touch screen based on a nano-silver film provided in the embodiment of the present application is based on any one of the first to third methods for manufacturing a touch screen based on a nano-silver film, and further includes the following technical features:
the coating of the conductive adhesive on the non-window area of the touch screen comprises the following steps:
and coating laser photoresist or photosensitive silver adhesive on the non-window area of the touch screen.
It should be noted that, depending on the type of the conductive adhesive, the subsequent operations may be performed accordingly.
The fifth method for manufacturing a touch screen based on a nano-silver film provided by the embodiment of the application is based on the fourth method for manufacturing a touch screen based on a nano-silver film, and further includes the following technical features:
the method for manufacturing the nano silver film in the window area of the touch screen comprises the following steps:
and manufacturing the nano silver film in the window area of the touch screen by utilizing a yellow light process or a laser process.
It should be noted that, the ITO yellow light process or the ITO laser process is used here, which is a mass production process of the capacitive screen and the resistive screen, and the process is mature, the yield is stable, no new equipment needs to be purchased, no equipment needs to be modified, the existing equipment and process are completely adopted for manufacturing, the cost is saved, the process is mature, and the production cost is low.
The sixth method for manufacturing a touch screen based on a nano-silver film provided by the embodiment of the present application is based on the fifth method for manufacturing a touch screen based on a nano-silver film, and further includes the following technical features:
the touch screen is a capacitive screen or a resistive screen.
The manufacturing method is suitable for the production of all capacitive screens or resistive screens, the process is mature, the manufactured nano silver wire conductive film is suitable for large, medium and small capacitive screens or resistive screens, and the adaptability is strong.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A method for manufacturing a touch screen based on a nano-silver film is characterized by comprising the following steps:
manufacturing a nano silver film in a window area of the touch screen to form a window area conductive wire;
coating conductive adhesive on a non-window area of the touch screen, communicating the conductive wiring of the window area with the FPC wiring, and removing bubbles in the conductive adhesive;
baking and curing the conductive adhesive;
the step of removing the bubbles in the conductive adhesive is as follows:
applying air pressure higher than a standard atmospheric pressure value to the conductive adhesive, keeping the pressure for a preset time, and removing air bubbles in the conductive adhesive;
the coating of the conductive adhesive on the non-window area of the touch screen comprises the following steps:
and coating laser photoresist or photosensitive silver adhesive on a non-window area of the touch screen.
2. The method for manufacturing a touch screen based on a nano-silver film according to claim 1, wherein the conductive adhesive is applied with an air pressure higher than a standard atmospheric pressure value for a preset time:
applying a pressure of 1.5 to 6 times the standard atmospheric pressure value to the conductive paste for at least 20 minutes.
3. The method for manufacturing a touch screen based on a nano-silver film according to claim 1, wherein the manufacturing of the nano-silver film in the window area of the touch screen comprises:
and manufacturing the nano silver film in the window area of the touch screen by utilizing a yellow light process or a laser process.
4. The method of claim 3, wherein the silver nanoparticle film is applied to the touch panel,
the touch screen is a capacitive screen or a resistive screen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710249063.4A CN108733243B (en) | 2017-04-17 | 2017-04-17 | Method for manufacturing touch screen based on nano silver film |
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| CN201710249063.4A CN108733243B (en) | 2017-04-17 | 2017-04-17 | Method for manufacturing touch screen based on nano silver film |
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