CN105068703A - Integrated capacitive touch panel and manufacture method thereof - Google Patents
Integrated capacitive touch panel and manufacture method thereof Download PDFInfo
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- CN105068703A CN105068703A CN201510475184.1A CN201510475184A CN105068703A CN 105068703 A CN105068703 A CN 105068703A CN 201510475184 A CN201510475184 A CN 201510475184A CN 105068703 A CN105068703 A CN 105068703A
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- touch panel
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Abstract
The invention discloses an integrated capacitive touch panel and a manufacture method thereof. The integrated capacitive touch panel comprises a PET (Polyethylene Terephthalate) substrate which adopts PET materials, wherein the PET substrate is further provided with one layer of ITO (Indium-Tin Oxide) conductive film, and the ITO conduction film comprises a plurality of X-shaft direction electrodes and a plurality of Y-shaft direction electrodes. The integrated capacitive touch panel and the manufacture method of the integrated capacitive touch panel make products thinner and lighter.
Description
[technical field]
The present invention relates to a kind of capacitive touch panels, particularly a kind of integrated capacitive touch panel and preparation method thereof.
[background technology]
Touch control device is subject to the favor of telecommunications industry gradually because of advantages such as its convenient operation, imaging are effective, function diversification, and be widely used on the products such as smart mobile phone, information system equipment, home appliance, communication apparatus, personal portable, it comprises the touch sensor of monitoring touch sensible (finger or other objects be placed on touch screen surface) in a large number, is used for identifying the position of induction zone.In conventional art, resistor type touch panel structure comparison is single, its surface uses the material of PET material to be panel, re-use two-layer ITO (full name: IndiumTinOxides, Chinese: indium tin oxide) as conduction, and current touch panel has changed to condenser type product by traditional resistance-type, it uses glass as panel, re-use ITOFILM or ITOGLASS as sensor, capacitance technology up-to-date is at present OGS (OneGlassSolution), use monolithic glass as surface, panel and sensor only just can be realized with one block of glass ITO to be plated in the back side again, namely one block of glass plays the double action of cover glass and touch sensor simultaneously, in addition, up-to-date capacitance technology also has INCELL, the method in liquid crystal pixel is embedded into by touch panel function.
Current capacitance type touch-control panel, its structure is all that (English: multilayered structure TouchSensor), such structure is except increasing design difficulty and raising the cost also consuming time for the touch sensing layer of employing under cover plate cover glass.Because traditional Projected capacitive touch panel must use 1 ~ 2 sheet glass to be made into touch sensing layer, add upper cover plate, cause complicated structure.Therefore, touch panel module manufacturer is just positive is incorporated into surface cap by touch sensing, ites is desirable to reduce material cost, the thickness reducing touch panel module and weight.Therefore, research staff proposes the ultimate scheme of capacitance touching control, only just can complete the function of touch-control exactly with the cover glass of individual layer.This by all mode of touch sensing circuit-forming on cover glass, thinner lighter structure, lower material cost, lower production equipment cost investment and larger contact panel output capacity can be reached.Although there is different name in each touch-control module factory for this new processing procedure, comprise Touchonlens, oneglasssolution, windowintegratedsensortouch, directpatternedwindow etc., but these all belong to method touch sensing being incorporated into surface cap in fact.Each method have employed 1 sheet glass, as the substrate of surface cap and touch sensing, referred to as " individual layer capacitive touch panels " or " integrated capacitive touch panel ".
It is reported, from 2011, many brand manufacturers such as NOKIA, Apple, Samsung etc., started requirement gentlier, thinner, the contact panel that more has cost competitiveness, this measure estimates the acceleration contributing to monolayer capacitive touch screen technology to popularize.The benefit of integrated capacitive touch-screen, is just that material cost is relatively cheap, good optical properties, weight are lighter, therefore can be used on non-display screen, as mirror, desk, window, vending machine, or replaces keyboard and various button.Based on industrial, military, outdoor applications and external hanging type touch-control in application.
But there is many challenges in integrated capacitive touch panel, such as in exploitation, the processing of monolithic glass difficulty causes complex manufacturing, yield is low, and glass is not only easily broken and the high cost of products that causes of price comparison is relative still very high, and does not reach the lightest the thinnest state.Therefore, be necessary to provide a kind of novel integrated capacitive touch panel and preparation method thereof.
[summary of the invention]
In order to overcome prior art problem, the invention provides a kind of novel integrated capacitive touch panel and preparation method thereof.
The scheme of technical solution problem of the present invention is to provide a kind of integrated capacitive touch panel, this integrated capacitive touch panel comprises a pet substrate, it adopts PET material, pet substrate is arranged further one deck ITO conductive film, this ITO conductive film comprises many X-direction electrodes and many Y direction electrodes.
Preferably, comprise OCA glue-line, anisotropic conductive film and flexible PCB further, anisotropic conductive film is between OCA glue-line and flexible PCB, and wherein OCA glue-line is positioned on ITO.
The another scheme of technical solution problem of the present invention is to provide a kind of method for making of integrated capacitive touch panel, it is characterized in that, comprises the following steps: step S1: provide a kind of pet substrate; Step S2: do the printing of black surround or electroplate size and color; Step S3: electroplate ITO conductive film or copper conductive film in the positive and negative of pet substrate respectively; Step S4: make conducting wire on ITO conductive film or copper conductive film; Step S5: make one deck low-reflection film on conducting wire; Step S6: make layer of surface hardening film on low-reflection film; Step S7: electrode pattern is formed with anti-etching ink or light shield egative film; Step S8: attach OCA; Step S9: be shaped to small pieces PET plate; Step S10:FPC and the pressing of PET plate; And step S11: entirely fit with LCM.
Preferably, in step S3 and S5, the ITO conductive film of this plating is one deck, and shaping many X-direction electrodes and many Y direction electrodes on this layer of ITO conductive film, the electrode pattern of touch sensible shaping on ITO conductive film is rhombus or strip.
Preferably, in step s 8, select the ACF of low temperature to carry out bonding, the bonding temp of this ACF is between 105 DEG C ~ 135 DEG C.
Preferably, Surface hardened layer film is surperficial in the soft substrate plate of acryl or polycarbonate with wet, and this Surface hardened layer film is tungsten carbide and the carbon (WC+C) of titanium nitride (TiN) or chromium nitride (CrN) or TiAlN (TiAIN) or titanium nitride and diamond like carbon (TiN+DLC) or lubricating function.
Preferably, this low-reflection film is one deck high-index material and the two-layer combination of one deck low-index material, and high-index material is based on titania, and low-index material is based on silicon dioxide or bifluoride magnesium.
Preferably, in step s 2, printing technology by SHEET on pet substrate does black surround, or electroplate other colors, this electric plating method uses technology or the vacuum plating of coating, carried out the amendment of pet substrate size by this electric plating method, the material wherein electroplated is electrical insulator material simultaneously.
Preferably, in step s3, this electroplating technology adopts the electroplating machine of low temperature to carry out, and the electroplating temperature of this electroplating machine is between 215 DEG C ~ 235 DEG C.
Preferably, the order of step S4 and S7 is interchangeable, also can be combined into same step and carry out.
Compared with prior art, PET material is used on integrated capacitive touch panel by the method for making of first embodiment of the invention integrated capacitive touch panel and the second embodiment integrated capacitive touch panel, form OFS (OnePETSolution) formula contact panel, the processing of this PET material is got up relatively easy a lot, which obviate the processing of monolithic glass difficulty and the low shortcoming of yield, PET material avoids the easily broken and heavier shortcoming of glass, its price is cheap relative to glass, it is a lot of that these all make the cost of Total Product reduce, and, when being not easy when most of user uses to tell glass material and PET material, whole product is made to become thinner lighter.The Surface hardened layer film used in the method for making of second embodiment of the invention integrated capacitive touch panel has the characteristic such as scratch resistance and abrasion performance, and this film hardness is 2H ~ 8H, reaches anti-scratch effect to strengthen its skin hardness.By using low-reflection film, it can the light transmittance of improving optical system and element, makes its image become more clear, is applied to the different field such as the surface of flat panel display surfaces, optical mirror slip and solar cell.In optical system, if element is without anti-reflex treated, then will there is reflected light and penetrating light in incident light on the interface of each medium, and solve mode be used in conjunction multicoating mode to make low reflective film, when incident light arrives multilayer film surface, penetrating light and reflected light will be had to produce, if can effectively control film refractive index and film thickness, both products are made to be the odd-multiple of 1/4 of lambda1-wavelength, then the reflected light at the reflected light at the interface of air and film and the interface of film and base material will form destructive interference, the reflectivity of incident wavelength can be made to level off to 0.
[accompanying drawing explanation]
Fig. 1 is the detonation configuration schematic diagram of first embodiment of the invention integrated capacitive contact panel.
Fig. 2 is the ITO conducting membrane structure schematic diagram of first embodiment of the invention integrated capacitive contact panel.
Fig. 3 is the method for making process flow diagram of second embodiment of the invention integrated capacitive touch panel.
[embodiment]
In order to make object of the present invention, technical scheme and advantage are clearly understood, below in conjunction with accompanying drawing and embodiment, are further elaborated to the present invention.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1, first embodiment of the invention provides a kind of integrated capacitive touch panel 1, this integrated capacitive touch panel 1 from bottom to up (in all embodiments, the position determiners such as upper and lower, left and right are only limitted to the relative position in given view, but not absolute position) comprise a PET (Polyethyleneterephthalate, polyethylene terephthalate) substrate 11, ITO conductive film 13, OCA (OpticallyClearAdhesive) glue-line 15, anisotropic conductive film 17 and flexible PCB 19 successively.
Pet substrate 11 adopts PET material, and its lower surface is that user points the one side of touching, and its upper surface is used for carrying ITO conductive film 13.
Please consult Fig. 2 further, what be positioned at pet substrate 1 arranges one deck ITO conductive film 13 above, ITO conductive film 13 comprises many X-direction electrodes 131 and many Y direction electrodes 132, the electrode pattern of its crisscross composition touch sensible, this each X-direction electrode 131 and Y direction electrode 132 are argyle design or strip pattern.
OCA glue-line 15 is applied by the OCA photoresist with high index of refraction, OCA photoresist is the extraordinary adhesive for cementing transparent optical element, there is water white transparency, light transmission rate is more than 90%, consolidation strength is good, in brief, OCA photoresist has the extraordinary double faced adhesive tape of optically transparent one deck exactly.
Anisotropic conductive film 17 i.e. ACF (AnisotropicConductiveFilm), it is made up of a kind of optical cement of anisotropic conductive by name, and its feature is that the resistance characteristic of Z axis electrically conducting direction and XY insulating planar has obvious otherness.After the difference of Z axis conduction resistance value and XY planar insulative resistance value exceedes certain ratio, namely can be described as good conduction anisotropy.
Flexible PCB 19 is that the one made for base material with polyimide or mylar has height reliability, excellent flexible printed circuit, be called for short soft board or FPC (FlexiblePrintedCircuitboard, flexible PCB), the feature that it has, and distribution density is high, lightweight, thickness is thin, bending property is good.
ITO conductive film 13 is arranged on above pet substrate 11, and this ITO conductive film 13 comprises many X-direction electrodes 131 and many Y direction electrodes 132, and it serves electric action; OCA glue-line 15 is positioned at above ITO conductive film 13, and it has very strong light transmission rate and it two-layerly up and down has very strong stickability; On OCA glue-line 15, arrange anisotropic conductive film 17, this anisotropic conductive film 17 only has electric conductivity in the direction (i.e. Z-direction) vertical with its face, place; Flexible PCB 19 is positioned on anisotropic conductive film 17, and it has good pliability.
Refer to Fig. 3, second embodiment of the invention provides a kind of method for making 2 of integrated capacitive touch panel 1, (structure mentioned in following flow process refers to view and the numbering of the integrated capacitive touch panel 1 that first embodiment of the invention provides) its comprise the following steps:
Step S1: a kind of pet substrate 1 is provided, this pet substrate 1 is made for PET material;
Step S2: do the printing of black surround or electroplate size and color.Printing technology by SHEET on pet substrate 1 does black surround, or according to the demand of client, electroplate other colors, this electric plating method can use technology or the vacuum plating of coating, carried out the amendment of pet substrate 1 size by this electric plating method, the material wherein electroplated is electrical insulator material simultaneously;
Step S3: electroplate ITO conductive film 13 or copper conductive film in the positive and negative of pet substrate respectively.At the transparent conducting film of surface low-temperature plating last layer of this pet substrate 1, i.e. ITO conductive film 13, wherein this electroplating technology adopts cold galvanising board to carry out, and the electroplating temperature of this electroplating machine is 215 DEG C ~ 235 DEG C, wherein with 225 DEG C ± 5 DEG C for optimum temperature;
Step S4: make conducting wire on ITO conductive film 13 or copper conductive film.This circuit can etch this ITO conductive film 13 and shaping by printing or by etching technique, and forms circuit interface end in this pet substrate 11 one end;
Step S5: make one deck low-reflection film on conducting wire.This low-reflection film is one deck high-index material and the two-layer combination of one deck low-index material, and high-index material is based on titania, and low-index material is based on silicon dioxide or bifluoride magnesium.
Step S6: make layer of surface hardening film on low-reflection film.Surface hardened layer film is with the soft substrate plate surface of wet in acryl or polycarbonate, is coated with the film thickness of step number μm, reaches more than 3H to strengthen its skin hardness.This Surface hardened layer film is tungsten carbide and the carbon (WC+C) of titanium nitride (TiN) or chromium nitride (CrN) or TiAlN (TiAIN) or titanium nitride and diamond like carbon (TiN+DLC) or lubricating function.
Step S7: electrode pattern is formed with anti-etching ink or light shield egative film.The electrode pattern of many touch sensibles of shaping X-axis and Y direction on one deck ITO conductive film 13, i.e. many X-direction electrodes 131 and many Y direction electrodes 132, the electrode pattern of these many touch sensibles is argyle design or strip pattern;
Step S8: attach OCA.ITO conductive film 13 applies the OCA photoresist of layer of transparent, forms OCA glue-line 15;
Step S9: be shaped to small pieces PET plate.Laser machine or Punch machine is used to be some small pieces PET plates by pet substrate 1 excision forming;
Step S10:FPC and the pressing of PET plate.Bonding (Bonding) FPC, ACF is utilized FPC to be bonded in circuit interface end corresponding to this PET plate and to do pressing, owing to often there will be some impressions in this step and quite obvious, so need when selecting ACF to select the ACF of low temperature and one deck PET will be padded more when pressing to make impression disappear, the bonding temp of this ACF between 105 DEG C ~ 135 DEG C, with 115 DEG C+5 DEG C for optimum temperature; And
Step S11: entirely fit with LCM.LCM (LCDModule) i.e. LCD shows module, Liquid Crystal Module, refers to peripheral circuits such as liquid crystal display device, web member, control and drivings, PCB, backlight, the assembly that structural member etc. are assembled together.Assemble this integrated capacitive touch panel 1 to one mobile phone or panel computer module, one mobile phone or panel computer module are provided, it includes a display module, assembles this integrated capacitive touch panel 1 to this mobile phone or the display module of panel computer, makes both fit completely.
In above-mentioned method for making, the order of step S4 and S7 is interchangeable, also can be combined into same step and carry out.
Compared with prior art, PET material is used on integrated capacitive touch panel 1 by the method for making 2 of first embodiment of the invention integrated capacitive touch panel 1 and the second embodiment integrated capacitive touch panel 1, form OFS (OnePETSolution) formula contact panel, the processing of this PET material is got up relatively easy a lot, which obviate the processing of monolithic glass difficulty and the low shortcoming of yield, PET material avoids the easily broken and heavier shortcoming of glass, its price is cheap relative to glass, it is a lot of that these all make the cost of Total Product reduce, and, when being not easy when most of user uses to tell glass material and PET material, whole product is made to become thinner lighter.The Surface hardened layer film used in the method for making 2 of second embodiment of the invention integrated capacitive touch panel 1 has the characteristic such as scratch resistance and abrasion performance, and this film hardness is 2H ~ 8H, reaches anti-scratch effect to strengthen its skin hardness.By using low-reflection film, it can the light transmittance of improving optical system and element, makes its image become more clear, is applied to the different field such as the surface of flat panel display surfaces, optical mirror slip and solar cell.In optical system, if element is without anti-reflex treated, then will there is reflected light and penetrating light in incident light on the interface of each medium, and solve mode be used in conjunction multicoating mode to make low reflective film, when incident light arrives multilayer film surface, penetrating light and reflected light will be had to produce, if can effectively control film refractive index and film thickness, both products are made to be the odd-multiple of 1/4 of lambda1-wavelength, then the reflected light at the reflected light at the interface of air and film and the interface of film and base material will form destructive interference, the reflectivity of incident wavelength can be made to level off to 0.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within principle of the present invention, equivalent replacement and improvement etc. all should comprise within protection scope of the present invention.
Claims (10)
1. an integrated capacitive touch panel, it is characterized in that: this integrated capacitive touch panel comprises a pet substrate, it adopts PET material, pet substrate is arranged further one deck ITO conductive film, and this ITO conductive film comprises many X-direction electrodes and many Y direction electrodes.
2. integrated capacitive touch panel as claimed in claim 1, it is characterized in that: comprise OCA glue-line, anisotropic conductive film and flexible PCB further, anisotropic conductive film is between OCA glue-line and flexible PCB, and wherein OCA glue-line is positioned on ITO.
3. a method for making for integrated capacitive touch panel, is characterized in that, comprises the following steps:
Step S1: a kind of pet substrate is provided;
Step S2: do the printing of black surround or electroplate size and color;
Step S3: electroplate ITO conductive film or copper conductive film in the positive and negative of pet substrate respectively;
Step S4: make conducting wire on ITO conductive film or copper conductive film;
Step S5: make one deck low-reflection film on conducting wire;
Step S6: make layer of surface hardening film on low-reflection film;
Step S7: electrode pattern is formed with anti-etching ink or light shield egative film;
Step S8: attach OCA;
Step S9: be shaped to small pieces PET plate;
Step S10:FPC and the pressing of PET plate; And
Step S11: entirely fit with LCM.
4. the method for making of integrated capacitive touch panel as claimed in claim 3, it is characterized in that: in step S3 and S5, the ITO conductive film of this plating is one deck, shaping many X-direction electrodes and many Y direction electrodes on this layer of ITO conductive film, the electrode pattern of touch sensible shaping on ITO conductive film is rhombus or strip.
5. the method for making of integrated capacitive touch panel as claimed in claim 3, is characterized in that: in step s 8, and select the ACF of low temperature to carry out bonding, the bonding temp of this ACF is between 105 DEG C ~ 135 DEG C.
6. the method for making of integrated capacitive touch panel as claimed in claim 2, it is characterized in that: Surface hardened layer film is surperficial in the soft substrate plate of acryl or polycarbonate with wet, and this Surface hardened layer film is tungsten carbide and the carbon (WC+C) of titanium nitride (TiN) or chromium nitride (CrN) or TiAlN (TiAIN) or titanium nitride and diamond like carbon (TiN+DLC) or lubricating function.
7. the method for making of integrated capacitive touch panel as claimed in claim 2, it is characterized in that: this low-reflection film is one deck high-index material and the two-layer combination of one deck low-index material, high-index material is based on titania, and low-index material is based on silicon dioxide or bifluoride magnesium.
8. the method for making of integrated capacitive touch panel as claimed in claim 3, it is characterized in that: in step s 2, printing technology by SHEET on pet substrate does black surround, or electroplate other colors, this electric plating method uses technology or the vacuum plating of coating, carried out the amendment of pet substrate size by this electric plating method, the material wherein electroplated is electrical insulator material simultaneously.
9. the method for making of integrated capacitive touch panel as claimed in claim 3, is characterized in that: in step s3, and this electroplating technology adopts the electroplating machine of low temperature to carry out, and the electroplating temperature of this electroplating machine is between 215 DEG C ~ 235 DEG C.
10. the method for making of the integrated capacitive touch panel as described in any one of claim 3 ~ 9, is characterized in that: the order of step S4 and S7 is interchangeable, also can be combined into same step and carry out.
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| CN201510475184.1A CN105068703A (en) | 2015-08-01 | 2015-08-01 | Integrated capacitive touch panel and manufacture method thereof |
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| CN201510475184.1A CN105068703A (en) | 2015-08-01 | 2015-08-01 | Integrated capacitive touch panel and manufacture method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108228016A (en) * | 2018-02-09 | 2018-06-29 | 江西蓝沛泰和新材料有限公司 | A kind of full bonding structure of large size capacitive touch screen |
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