CN112114712A - Manufacturing process of FF touch screen - Google Patents
Manufacturing process of FF touch screen Download PDFInfo
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- CN112114712A CN112114712A CN202011104692.6A CN202011104692A CN112114712A CN 112114712 A CN112114712 A CN 112114712A CN 202011104692 A CN202011104692 A CN 202011104692A CN 112114712 A CN112114712 A CN 112114712A
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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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Abstract
The invention relates to the technical field of touch screen manufacturing, in particular to a manufacturing process of an FF touch screen, which comprises the following steps: (1) firstly, electroplating or coating an ITO conductive layer on the back of a PET material to serve as an upper conductive material of the touch screen; (2) etching a preset conductive pattern and a circuit on the ITO conductive layer on the back of the PET material through a laser etching machine; (3) then, carrying out surface treatment on the front surface of the PET material to ensure that the surface hardness of the PET material reaches more than 3H and the touch writing of human fingers can be supported; (4) finally, the conductive surface of the ITO film on the lower layer in the touch screen is upward, and the middle of the ITO film is bonded through transparent optical adhesive OCA, so that the FF touch screen with the cover plate effect can be formed; the upper layer material in the touch screen can reach the surface hardness of more than 3H, and can also be a PET material with an ITO conductive layer attached to the back surface, and the PET material without the conductive layer in the prior art is replaced, so that two attaching processes can be reduced, the two layers of materials are formed, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of touch screen manufacturing, in particular to a manufacturing process of an FF touch screen.
Background
As an advanced electronic input device, the touch screen has the advantages of simplicity, convenience, high response speed, space saving, easiness in man-machine communication and the like. Touch screen technology originated in the 70's of the 20 th century and was used in industrial and commercial devices such as industrial computers and POS terminals in the early days. With the rapid growth of the market of information and electronic equipment products and the continuous improvement of the requirements of people on intellectualization, convenience and humanization of electronic products, the touch screen is widely applied as an intuitive input interface. Currently, the demand for touch screens mainly comes from consumer electronics products, such as mobile phones, PDAs, portable game devices, portable navigation devices, etc., but with the continuous development of touch screen technology, the application of touch screens in other electronic products will be extended.
At present, a resistance touch screen mainly adopts outer-layer PET to print black ink, silver paste lines printed on an ITO film of a middle layer form an upper-layer loop, silver paste lines printed on an ITO glass of a lower layer form a lower-layer loop, the three layers are bonded together through OCA or double-sided adhesive to realize the function of the touch screen, the general structure is provided with 57 layers, each layer is complicated in printing and processing, the working procedure is complex, the product cost is high, and the yield is low; in addition, a polyethylene terephthalate (PET) film is generally used as a PET layer of a touch panel, and the PET film is produced by stretching polyethylene terephthalate as a raw material. The high-strength wear-resistant and scratch-resistant composite material has the characteristics of excellent processability, good electrical insulation performance, light weight, high toughness, weather resistance and excellent chemical resistance, but is influenced by use conditions in the use process of photoelectric products, and is required to have special performances such as good wear resistance, scratch resistance and the like.
Disclosure of Invention
The invention designs a manufacturing process of an FF touch screen aiming at the problems in the background art.
The invention is realized by the following technical scheme:
a manufacturing process of an FF touch screen comprises the following steps:
(1) firstly, electroplating or coating an ITO conductive layer on the back of a PET material to serve as an upper conductive material of the touch screen;
(2) etching a preset conductive pattern and a circuit on the ITO conductive layer on the back of the PET material through a laser etching machine;
(3) then, carrying out surface treatment on the front surface of the PET material to ensure that the surface hardness of the PET material reaches more than 3H and the touch writing of human fingers can be supported;
(4) and finally, the conductive surface of the ITO film on the lower layer in the touch screen is upward, and the middle of the ITO film is bonded by transparent optical adhesive OCA, so that the FF touch screen with the cover plate effect can be formed.
As a further improvement of the scheme, the raw materials of the PET material in the step (1) comprise the following components in parts by weight: 70-90 parts of PET, 6-10 parts of glass fiber, 4-7 parts of carboxyl nitrile rubber, 1.2-1.8 parts of calcium sulfate and 0.3-0.5 part of antioxidant.
As a further improvement of the scheme, the antioxidant is one or more compounds selected from beta- (3, 5-di-tert-butyl hydroxyphenyl) acrylic acid octadecanoic carbonate, tri- (2, 4-tert-butylphenyl) phosphite, tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and ditridecanol thiodipropionate.
As a further improvement of the above solution, the step (3) of surface treating the front surface of the PET material comprises: firstly, taking a PET material sample, placing the PET material sample in deionized water, and carrying out ultrasonic cleaning for 10-20 min, and then placing the PET material sample in 500ml of alcohol, and carrying out ultrasonic cleaning for 10-20 min; after ultrasonic cleaning is finished, placing the PET material sample in a glass container for natural drying; after air drying, the PET material sample is placed in a reaction cavity of a plasma treatment system, when the pressure of the reaction cavity is lower than 13.3Pa, a gas flow controller is adjusted, argon/nitrogen mixed gas is introduced, the gas in the reaction cavity reaches the pressure of 26.6Pa required by a test, and finally, the power of a power supply is adjusted to carry out surface treatment on the PET material.
As a further improvement of the proposal, the flow of the argon in the argon/nitrogen mixed gas is 4cm3Min, flow rate of nitrogen gas is 20cm3/min。
As a further improvement of the scheme, the ultrasonic power of a sample of the PET material in deionized water and alcohol is 80-100 w.
As a further improvement of the above scheme, the specific process of the laser etching machine in the step (2) is as follows: firstly, making an internal pattern of a touch scheme by a single-layer multi-point generating tool corresponding to the touch scheme; then, conducting lead angle forming improvement on the internal pattern through drawing software, and making a complete laser etching drawing paper of a single-layer multi-point touch scheme; and finally, analyzing the laser etching graph paper into a laser etching machine-readable conductive pattern etching graph by graph analysis software, setting etching parameters, and performing pattern etching on the ITO conductive layer on the back surface of the PET material by a laser etching machine to etch the required conductive pattern and circuit.
As a further improvement of the scheme, the thickness of the transparent optical adhesive OCA is 40-60 mu m, and the stripping viscosity of the transparent optical adhesive OCA to the ITO film is 50-120N/100 mm.
As a further improvement of the scheme, the combined thickness of the PET material and the ITO conductive layer on the upper layer in the FF touch screen is 110-140 microns, and the thickness of the ITO film on the lower layer is 100-130 microns.
Compared with the prior art, the invention has the beneficial effects that:
1. the upper layer material in the touch screen can achieve the surface hardness of more than 3H and can also take into account that the PET material with the ITO conductive layer attached to the back replaces the PET material without the conductive layer in the prior art, so that two attaching processes and two layers of materials can be reduced, and the aim of reducing the cost is fulfilled.
2. The raw materials of the PET material comprise glass fiber, carboxyl nitrile rubber and calcium sulfate, and the PET material has an induced crystallization effect, so that the number of resin crystals can be greatly increased, and the grain refinement is promoted, thereby being beneficial to improving the strength of the PET material; when the PET material is impacted by external force, the resin around the particles in the PET material can be induced to generate crazes and shear bands to yield, the interaction of the crazes and the shear bands can absorb a large amount of energy, the impact strength can be improved, and the existence of the fibrous inorganic filler for improving the toughness of the matrix resin can block the expansion or passivation of destructive cracks, so that the cracks can be effectively stopped.
3. According to the invention, argon/nitrogen mixed gas is introduced to carry out plasma treatment on the PET material, the physical and chemical structures of glass fibers in the raw materials can be improved through the plasma treatment, and the overall performance of the composite material is not influenced while the strength between the fibers and the resin matrix is enhanced; in addition, the plasma treatment can also improve the roughness of the surface of the glass fiber, and can improve the anchoring effect between the glass fiber and the matrix resin, thereby further improving the strength of the PET material.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, 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 diagram of the internal structure of the FF touch screen according to the present invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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.
Example 1
A manufacturing process of an FF touch screen comprises the following steps:
(1) firstly, electroplating or coating an ITO conductive layer on the back of a PET material to serve as an upper conductive material of the touch screen;
(2) etching a preset conductive pattern and a circuit on the ITO conductive layer on the back of the PET material through a laser etching machine;
(3) then, carrying out surface treatment on the front surface of the PET material to ensure that the surface hardness of the PET material reaches more than 3H and the touch writing of human fingers can be supported;
(4) and finally, the conductive surface of the ITO film on the lower layer in the touch screen is upward, and the middle of the ITO film is bonded by transparent optical adhesive OCA, so that the FF touch screen with the cover plate effect can be formed.
The PET material in the step (1) comprises the following raw materials in parts by weight: 70 parts of PET, 6 parts of glass fiber, 4 parts of carboxyl nitrile rubber, 1.2 parts of calcium sulfate and 0.3 part of antioxidant; the antioxidant is beta- (3, 5-di-tert-butyl hydroxyphenyl) acrylic acid octadecanoic carbonate.
The specific process of the laser etching machine in the step (2) is as follows: firstly, making an internal pattern of a touch scheme by a single-layer multi-point generating tool corresponding to the touch scheme; then, conducting lead angle forming improvement on the internal pattern through drawing software, and making a complete laser etching drawing paper of a single-layer multi-point touch scheme; and finally, analyzing the laser etching graph paper into a laser etching machine-readable conductive pattern etching graph by graph analysis software, setting etching parameters, and performing pattern etching on the ITO conductive layer on the back surface of the PET material by a laser etching machine to etch the required conductive pattern and circuit.
The surface treatment process of the front surface of the PET material in the step (3) comprises the following steps: firstly, taking a PET material sample, placing the PET material sample in deionized water, and ultrasonically cleaning for 10min, and then placing the PET material sample in 500ml of alcohol, and ultrasonically cleaning for 10 min; after ultrasonic cleaning is finished, placing the PET material sample in a glass container for natural drying; after air drying, placing the PET material sample in a reaction cavity of a plasma treatment system, adjusting a gas flow controller when the pressure of the reaction cavity is lower than 13.3Pa, introducing argon/nitrogen mixed gas to enable the gas in the reaction cavity to reach the pressure of 26.6Pa required by a test, and finally adjusting the power of a power supply to carry out surface treatment on the PET material; the flow rate of argon in the argon/nitrogen mixed gas is 4cm3Min, flow rate of nitrogen gas is 20cm3Min; samples of PET material were sonicated at 100w in deionized water and in alcohol.
After the manufacturing, as shown in fig. 1, the thickness of the transparent optical adhesive OCA is 40 μm, and the peeling viscosity of the transparent optical adhesive OCA to the ITO film is 50N/100 mm; the thickness of the combination of the PET material and the ITO conductive layer on the upper layer in the FF touch screen is 110 micrometers, and the thickness of the ITO film on the lower layer is 110 micrometers.
Example 2
A manufacturing process of an FF touch screen comprises the following steps:
(1) firstly, electroplating or coating an ITO conductive layer on the back of a PET material to serve as an upper conductive material of the touch screen;
(2) etching a preset conductive pattern and a circuit on the ITO conductive layer on the back of the PET material through a laser etching machine;
(3) then, carrying out surface treatment on the front surface of the PET material to ensure that the surface hardness of the PET material reaches more than 3H and the touch writing of human fingers can be supported;
(4) and finally, the conductive surface of the ITO film on the lower layer in the touch screen is upward, and the middle of the ITO film is bonded by transparent optical adhesive OCA, so that the FF touch screen with the cover plate effect can be formed.
The PET material in the step (1) comprises the following raw materials in parts by weight: 80 parts of PET, 70 parts of glass fiber, 6 parts of carboxyl nitrile rubber, 1.5 parts of calcium sulfate and 0.4 part of antioxidant; the antioxidant is tris- (2, 4-tert-butylphenyl) phosphite.
The specific process of the laser etching machine in the step (2) is as follows: firstly, making an internal pattern of a touch scheme by a single-layer multi-point generating tool corresponding to the touch scheme; then, conducting lead angle forming improvement on the internal pattern through drawing software, and making a complete laser etching drawing paper of a single-layer multi-point touch scheme; and finally, analyzing the laser etching graph paper into a laser etching machine-readable conductive pattern etching graph by graph analysis software, setting etching parameters, and performing pattern etching on the ITO conductive layer on the back surface of the PET material by a laser etching machine to etch the required conductive pattern and circuit.
The surface treatment process of the front surface of the PET material in the step (3) comprises the following steps: firstly, taking a PET material sample, placing the PET material sample in deionized water, and ultrasonically cleaning for 15min, and then placing the PET material sample in 500ml of alcohol, and ultrasonically cleaning for 15 min; after ultrasonic cleaning is finished, placing the PET material sample in a glass container for natural drying; after air drying, placing the PET material sample in a reaction cavity of a plasma treatment system, adjusting a gas flow controller when the pressure of the reaction cavity is lower than 13.3Pa, introducing argon/nitrogen mixed gas to enable the gas in the reaction cavity to reach the pressure of 26.6Pa required by a test, and finally adjusting the power of a power supply to carry out surface treatment on the PET material; the flow rate of argon in the argon/nitrogen mixed gas is 4cm3Min, flow rate of nitrogen gas is 20cm3Min; samples of PET material were sonicated at 90w in deionized water and in alcohol.
After the manufacturing, as shown in fig. 1, the thickness of the transparent optical adhesive OCA is 50 μm, and the peeling viscosity of the transparent optical adhesive OCA to the ITO film is 80N/100 mm; the thickness of the combination of the PET material and the ITO conductive layer on the upper layer in the FF touch screen is 125 microns, and the thickness of the ITO film on the lower layer is 125 microns.
Example 3
A manufacturing process of an FF touch screen comprises the following steps:
(1) firstly, electroplating or coating an ITO conductive layer on the back of a PET material to serve as an upper conductive material of the touch screen;
(2) etching a preset conductive pattern and a circuit on the ITO conductive layer on the back of the PET material through a laser etching machine;
(3) then, carrying out surface treatment on the front surface of the PET material to ensure that the surface hardness of the PET material reaches more than 3H and the touch writing of human fingers can be supported;
(4) and finally, the conductive surface of the ITO film on the lower layer in the touch screen is upward, and the middle of the ITO film is bonded by transparent optical adhesive OCA, so that the FF touch screen with the cover plate effect can be formed.
The PET material in the step (1) comprises the following raw materials in parts by weight: 90 parts of PET, 10 parts of glass fiber, 7 parts of carboxyl nitrile rubber, 1.8 parts of calcium sulfate, 1 part of modified graphene and 0.5 part of antioxidant; the antioxidant is tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.
For better results, the PET is treated before use: preparing 100 parts by weight of PET into suspension, adding 0.1 part by weight of potassium hydroxide powder, heating to 75 ℃ under a stirring state, adding 0.02 part by weight of lauric acid and 0.01 part by weight of ethylene glycol monobutyl ether, continuously stirring for 2 hours, cooling, filtering, washing, drying, adding 0.01 part by weight of methyl triethoxysilane and 0.01 part by weight of isooctyl bis-n-octyl tin bis-thioglycolate, and grinding for later use.
The modified graphene is subjected to the following treatment before use: uniformly mixing 10 parts by weight of graphene oxide and 1 part by weight of N-octadecyl diethanolamine in 1000ml of acetone, stirring for 24-48h at 40-50 ℃, and then centrifuging, washing and drying to obtain the modified graphene oxide.
The specific process of the laser etching machine in the step (2) is as follows: firstly, making an internal pattern of a touch scheme by a single-layer multi-point generating tool corresponding to the touch scheme; then, conducting lead angle forming improvement on the internal pattern through drawing software, and making a complete laser etching drawing paper of a single-layer multi-point touch scheme; and finally, analyzing the laser etching graph paper into a laser etching machine-readable conductive pattern etching graph by graph analysis software, setting etching parameters, and performing pattern etching on the ITO conductive layer on the back surface of the PET material by a laser etching machine to etch the required conductive pattern and circuit.
The surface treatment process of the front surface of the PET material in the step (3) comprises the following steps: firstly, taking a PET material sample, placing the PET material sample in deionized water, and ultrasonically cleaning for 20min, and then placing the PET material sample in 500ml of alcohol, and ultrasonically cleaning for 20 min; after ultrasonic cleaning is finished, placing the PET material sample in a glass container for natural drying; after air drying, placing the PET material sample in a reaction cavity of a plasma treatment system, adjusting a gas flow controller when the pressure of the reaction cavity is lower than 13.3Pa, introducing argon/nitrogen mixed gas to enable the gas in the reaction cavity to reach the pressure of 26.6Pa required by a test, and finally adjusting the power of a power supply to carry out surface treatment on the PET material; the flow rate of argon in the argon/nitrogen mixed gas is 4cm3Min, flow rate of nitrogen gas is 20cm3Min; samples of PET material were sonicated at 100w in deionized water and in alcohol.
After the manufacturing, as shown in fig. 1, the thickness of the transparent optical adhesive OCA is 60 μm, and the peeling viscosity of the transparent optical adhesive OCA to the ITO film is 120N/100 mm; the thickness of the combination of the PET material and the ITO conductive layer on the upper layer in the FF touch screen is 140 micrometers, and the thickness of the ITO film on the lower layer is 130 micrometers.
The hardness test of the touch screen of the embodiment 1-3 comprises the following specific steps: firstly, preparing a steel ball, and then placing the touch screen in a lying manner; connecting the touch screen to a normal temperature environment, and impacting the touch screen by using prepared steel balls to freely fall above four corners and the middle part of the touch screen respectively; then detecting whether the touch screen can work normally; if the touch screen cannot work normally, the hardness of the touch screen in the normal-temperature environment does not reach the standard, and a result that the touch screen is damaged due to impact in the normal-temperature environment is recorded; if the touch screen can work normally, the touch screen is laid down, and then the touch screen is impacted by prepared steel balls which freely fall respectively above four corners and the middle part of the touch screen in a high-temperature environment; then detecting whether the touch screen can work normally; if the touch screen cannot work normally, the hardness of the touch screen in the high-temperature environment does not reach the standard, and the result that the touch screen is damaged due to impact in the high-temperature environment is recorded. Experiments show that the touch screen of the embodiment 1-3 of the invention can work normally after being tested.
The upper layer material in the touch screen can achieve the surface hardness of more than 3H and can also take into account that the PET material with the ITO conductive layer attached to the back replaces the PET material without the conductive layer in the prior art, so that two attaching processes can be reduced, and the purpose of reducing the cost can be achieved; the method plays a role in inducing crystallization in the PET material, can greatly increase the number of resin crystals and promote the grain refinement, thereby being beneficial to improving the strength of the PET material; when the PET material is subjected to external impact force, the resin around the particles in the PET material can be induced to generate crazes and shear bands to yield, the interaction of the crazes and the shear bands can absorb a large amount of energy, the impact strength can be increased, and therefore the existence of the fibrous inorganic filler which improves the toughness of matrix resin can block the expansion or passivation of destructive cracks, so that the cracks can be effectively terminated; introducing argon/nitrogen mixed gas to carry out plasma treatment on the PET material, wherein the plasma treatment can improve the physical and chemical structures of the glass fibers in the raw materials, and does not influence the overall performance of the composite material while enhancing the strength between the fibers and the resin matrix; in addition, the plasma treatment can also improve the roughness of the surface of the glass fiber, and can improve the anchoring effect between the glass fiber and the matrix resin, thereby further improving the strength of the PET material.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A manufacturing process of an FF touch screen is characterized by comprising the following steps:
(1) firstly, electroplating or coating an ITO conductive layer on the back of a PET material to serve as an upper conductive material of the touch screen;
(2) etching a preset conductive pattern and a circuit on the ITO conductive layer on the back of the PET material through a laser etching machine;
(3) then, carrying out surface treatment on the front surface of the PET material to ensure that the surface hardness of the PET material reaches more than 3H;
(4) and finally, the conductive surface of the ITO film on the lower layer in the touch screen is upward, and the middle of the ITO film is bonded by transparent optical adhesive OCA, so that the FF touch screen can be formed.
2. The manufacturing process of an FF touch screen according to claim 1, characterized in that: the PET material in the step (1) comprises the following raw materials in parts by weight: 70-90 parts of PET, 6-10 parts of glass fiber, 4-7 parts of carboxyl nitrile rubber, 1.2-1.8 parts of calcium sulfate and 0.3-0.5 part of antioxidant.
3. The manufacturing process of an FF touch screen according to claim 2, characterized in that: the antioxidant is selected from one or more of beta- (3, 5-di-tert-butyl hydroxyphenyl) acrylic acid octadecane, tris- (2, 4-tert-butylphenyl) phosphite, tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and didecyl glycol thiodipropionate.
4. The manufacturing process of an FF touch screen according to claim 1, characterized in that: the surface treatment process of the front surface of the PET material in the step (3) comprises the following steps: firstly, taking a PET material sample, placing the PET material sample in deionized water, and carrying out ultrasonic cleaning for 10-20 min, and then placing the PET material sample in 500ml of alcohol, and carrying out ultrasonic cleaning for 10-20 min; after ultrasonic cleaning is finished, placing the PET material sample in a glass container for natural drying; and after drying, placing the PET material sample in a reaction cavity of a plasma treatment system, adjusting a gas flow controller when the pressure of the reaction cavity is lower than 13.3Pa, introducing argon/nitrogen mixed gas to enable the gas in the reaction cavity to reach the pressure of 26.6Pa required by the test, and performing surface treatment on the PET material.
5. The manufacturing process of an FF touch screen according to claim 4, wherein the manufacturing process comprises the following steps: the flow of argon in the argon/nitrogen mixed gas is 4cm3Min, flow rate of nitrogen gas is 20cm3/min。
6. The manufacturing process of an FF touch screen according to claim 4, wherein the manufacturing process comprises the following steps: the ultrasonic power of a sample of the PET material in deionized water and alcohol is 80-100 w.
7. The manufacturing process of an FF touch screen according to claim 1, characterized in that: the specific process of the laser etching machine in the step (2) is as follows: firstly, making an internal pattern of a touch scheme by a single-layer multi-point generating tool corresponding to the touch scheme; then, conducting lead angle forming improvement on the internal pattern through drawing software, and making a complete laser etching drawing paper of a single-layer multi-point touch scheme; and finally, analyzing the laser etching graph paper into a laser etching machine-readable conductive pattern etching graph by graph analysis software, setting etching parameters, and performing pattern etching on the ITO conductive layer on the back surface of the PET material by a laser etching machine to etch the required conductive pattern and circuit.
8. The manufacturing process of an FF touch screen according to claim 1, characterized in that: the thickness of the transparent optical cement OCA is 40-60 mu m, and the stripping viscosity of the transparent optical cement OCA to the ITO film is 50-120N/100 mm.
9. The manufacturing process of an FF touch screen according to claim 1, characterized in that: the combined thickness of the PET material and the ITO conductive layer on the upper layer in the FF touch screen is 110-140 mu m, and the thickness of the ITO film on the lower layer is 100-130 mu m.
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