CN102662522A - Method for manufacturing flexible touch screen and equipment for manufacturing touch electrode coil - Google Patents
Method for manufacturing flexible touch screen and equipment for manufacturing touch electrode coil Download PDFInfo
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- CN102662522A CN102662522A CN2012101110086A CN201210111008A CN102662522A CN 102662522 A CN102662522 A CN 102662522A CN 2012101110086 A CN2012101110086 A CN 2012101110086A CN 201210111008 A CN201210111008 A CN 201210111008A CN 102662522 A CN102662522 A CN 102662522A
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Abstract
The invention provides a method for manufacturing a flexible touch screen and equipment for manufacturing a touch electrode coil for the flexible touch screen. A transparent conductive electrode pattern and an electrode lead of the touch screen are directly printed on the surface of a transparent insulated plastic substrate in a coil-to-coil manner. Compared with a traditional lithography process and dry-wet method etching manufacturing process for the touch screen, the method disclosed by the invention has the advantages that processing procedures of the touch screen are greatly simplified, the cost is reduced and the yield is increased; and in addition, the bottleneck that the processing size is limited is overcome and the flexible touch screen with large size can be manufactured, so that the touch screen can be applied to and popularized in the novel fields in a wide range.
Description
Technical field
The present invention relates to the touch screen technology field, be specifically related to a kind of method and the equipment for preparing the touch-control electrode coiled material that is used for flexible touch screen for preparing flexible touch screen.
Background technology
At present; Touch-screen has been the good human-computer interaction interactive tools that replaces mouse; But mostly existing conventional touch screen technology is glass baseplate and makes; Only limit to the application of mobile phone faceplate and industry control small panel, also can't low-cost volume production touch-screen more than 10 inches, more can't realize the volume production of large scale touch-screen.The homogeneity of small-medium size contact panel is serious in the industry at present, and fine ratio of product is low, and the constraint of process technique makes cost high.
Traditional touch screen (for example capacitance touch screen) processing procedure receives the constraint of material and processing procedure, gets into development bottleneck.Aspect material, mostly crucial starting material are ITO (tin indium oxide) plated film and ITO electro-conductive glass, rare because of indium, and along with skyrocketing and the protection of country to exotic material of ITO material price, having made ITO is that main touch-screen cost is high.Aspect processing procedure; Existing processing procedure is " sheet by sheet " (" sheet is to sheet ") processing procedure basically, and earlier ITO film and the ito glass with film forming prepares electrode pattern through gold-tinted processing procedure, dry method or wet etching, and need fall unwanted film forming is partially-etched; Like this, the conductive material waste is serious.And wet etching exists problems such as not environmental protection, complex process, yield be low, and the technical threshold of dry etching is high, and production efficiency is low, and production equipment is expensive.Nearly 50 multiple working procedures of this processing procedure operation, and the operation of unit platform, the manpower requirement amount is big, and yield is low.And the making base material of prior art is the nonbreakable glass base material, adds the restriction of above manufacturing method thereof and equipment; Also can't realize the large scale volume production; 10 inches low with the top panel fine ratio of product, and large size panel is main with heavy expensive light-operated touch-screen basically, and development receives restriction greatly.
These situations are also impelled the research of the equivalent material of material science bound pair ITO material; Wherein electrically conducting transparent is maximum research direction, existing at present research preparation and the application that comprises materials such as AZO (Al-Doped ZnO), ATO (antimony tin), Ag nanometer (Nano Silver), CNT (CNT), graphene film.
Summary of the invention
Partly statement in the description hereinafter of content of the present invention and advantage perhaps can be described obviously from this, perhaps can learn through putting into practice the present invention.
For overcoming prior art problems; The present invention provides a kind of method and the equipment for preparing the touch-control electrode coiled material that is used for flexible touch screen for preparing flexible touch screen, with mode direct printing transparent conductive electrode pattern and electrode cable on the plastic basis material surface of transparent insulation of volume to volume, compares with dried, wet etching manufacturing process with traditional touch screen gold-tinted processing procedure; The manufacturing procedure of touch-screen is simplified greatly; Cost reduces, and yield improves, and has overcome the bottleneck of processing dimension restriction; Can prepare the large scale flexible touch screen, touch-screen can be used in new field and significantly promote.
It is following that the present invention solves the problems of the technologies described above the technical scheme that is adopted:
According to an aspect of the present invention, a kind of method for preparing flexible touch screen is provided, it comprises the following steps:
The X-direction conductive layer is provided; It is through adopting transparent at least one the first transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on the plastic basis material of first transparent insulation volume surface, and around this first transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form first electrode cable that is connected with this first transparency conductive electrode pattern and form;
The Y direction conductive layer is provided; It is through adopting transparent at least one the second transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on the plastic basis material of second transparent insulation volume surface, and around this second transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form second electrode cable that is connected with this second transparency conductive electrode pattern and form;
On one of them layer of this X-direction conductive layer and this Y direction conductive layer, form the transparent insulation composite bed, and utilize the transparent insulation composite bed that this X-direction conductive layer and this Y direction conductive layer are carried out pattern and accurately locate compound;
On the double-deck conductive electrode film after compound the optics pressure-sensitive adhesive coating and compound on mould release membrance, rolling forms flexible touch-control electrode coiled material;
After cutting and cutting, on first electrode cable and second electrode cable, be connected flexible printed circuit board, thereby form flexible touch screen.
According to another aspect of the present invention, a kind of method for preparing flexible touch screen is provided, comprising the following step:
The X-direction conducting surface is provided; It is through adopting transparent at least one the first transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on one of them surface of the plastic basis material of transparent insulation volume, and around this first transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form first electrode cable that is connected with this first transparency conductive electrode pattern and form;
The Y direction conducting surface is provided; It is through adopting the second transparency conductive electrode pattern of the transparent disposable printing of electrically conductive ink in seal back at least one and the first transparency conductive electrode pattern contraposition on wherein another surface of the plastic basis material of the transparent insulation of having printed X-direction conducting surface volume, and adopts second electrode cable that the formation of electrically conductive ink positioning overprinting is connected with this second transparency conductive electrode pattern on every side and form at this second transparency conductive electrode pattern;
On formed one of them conducting surface, be coated with or add and cover diaphragm, or the coating protective finish;
Mould release membrance on optics pressure-sensitive adhesive coating on formed wherein another conducting surface is also compound; Form flexible touch-control electrode coiled material; Touch-control electrode coiled material is connected flexible printed circuit board on first electrode cable and second electrode cable after cutting and cutting, thereby form flexible touch screen.
According to one embodiment of present invention, this first transparency conductive electrode pattern adopts transparent electrically conductive ink and the opaque electrically conductive ink on-line continuous in seal back to be completed for printing respectively with this first electrode cable; And this second transparency conductive electrode pattern adopts transparent electrically conductive ink and the opaque electrically conductive ink on-line continuous in seal back to be completed for printing respectively with this second electrode cable.
According to one embodiment of present invention, this first transparency conductive electrode pattern adopts transparent disposable being completed for printing of electrically conductive ink in seal back with this first electrode cable; And this second transparency conductive electrode pattern adopts transparent disposable being completed for printing of electrically conductive ink in seal back with this second electrode cable.
According to one embodiment of present invention, the plastic basis material of this transparent insulation volume adopts the polyethylene terephthalate plastics of high permeability, low haze.
According to one embodiment of present invention, this polyethylene terephthalate frosting through corona or the coating precoated shet mode improve its surfactivity.
According to one embodiment of present invention, this first transparency conductive electrode pattern and the second transparency conductive electrode pattern adopt the volume to volume printing, comprise adopting the equipment of inkjet printing, gravure, flexo or nano impression to print; This first electrode cable and second electrode cable adopt the volume to volume printing, comprise adopting the equipment of inkjet printing, gravure, flexo, volume to volume silk-screen or nano impression to print.
According to one embodiment of present invention, be used for electrically conductive ink transparent behind the seal of transparency conductive electrode pattern and adopt nano material, comprise carbon nanotube ink, silver-colored nano ink or organic macromolecule conducting material; The electrically conductive ink that is used for electrode cable adopts nano material, comprises nanometer silver paste, carbon nanotube ink or copper nano ink.
According to one embodiment of present invention, this transparent insulation composite bed is employed on this X-direction conductive layer or this Y direction conductive layer gravure or coating optical cement, or adds and cover the dried glued membrane of optics and form.
According to a further aspect of the invention, the equipment of the touch-control electrode coiled material that a kind of preparation is used for flexible touch screen is provided, comprising:
The first printing element group; On the transport path that its plastic basis material that is arranged on first transparent insulation is rolled up; Be used to form the X-direction conductive layer; This X-direction conductive layer is through adopting transparent at least one the first transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on the plastic basis material of first transparent insulation volume surface, and around this first transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form first electrode cable that is connected with this first transparency conductive electrode pattern and form;
The second printing element group; On the transport path that its plastic basis material that is arranged on second transparent insulation is rolled up; Be used to form the Y direction conductive layer; This Y direction conductive layer is through adopting transparent at least one the second transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on the plastic basis material of second transparent insulation volume surface, and around this second transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form second electrode cable that is connected with this second transparency conductive electrode pattern and form;
Coating or add coating device is used for formation transparent insulation composite bed on one of them layer of this X-direction conductive layer and this Y direction conductive layer; And be used for wherein optics pressure-sensitive adhesive coating of the double-deck conductive electrode film after compound;
The location set composite, it is used for that this X-direction conductive layer and this Y direction conductive layer are carried out pattern through formed transparent insulation composite bed and accurately locatees compoundly, forms double-deck conductive electrode coiled material; And be used for forming touch-control electrode coiled material again behind the compound mould release membrance on the double-deck conductive electrode film of optics pressure-sensitive adhesive coating.
According to a further aspect of the invention, the equipment of the touch-control electrode coiled material that a kind of preparation is used for flexible touch screen is provided, comprising:
The first printing element group; On the transport path that its plastic basis material that is arranged on transparent insulation is rolled up; Be used to form the X-direction conducting surface; This X-direction conducting surface is through adopting transparent at least one the first transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on one of them surface of the plastic basis material of transparent insulation volume, and around this first transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form first electrode cable that is connected with this first transparency conductive electrode pattern and form;
Turning device, its plastic basis material with the transparent insulation of carrying overturns;
The second printing element group; On the transport path that its plastic basis material that is arranged on the transparent insulation after the upset is rolled up; Be used to form the Y direction conducting surface; This Y direction conducting surface is through adopting the second transparency conductive electrode pattern of the transparent disposable printing of electrically conductive ink in seal back at least one and the first transparency conductive electrode pattern contraposition on wherein another surface of the plastic basis material of the transparent insulation of having printed X-direction conducting surface volume, and adopts second electrode cable that the formation of electrically conductive ink positioning overprinting is connected with this second transparency conductive electrode pattern on every side and form at this second transparency conductive electrode pattern;
Coating or add coating device, it be coated with or adds on formed one of them conducting surface and covers diaphragm, or is coated with protective finish, optics pressure-sensitive adhesive coating on another conducting surface;
Set composite, it forms flexible touch-control electrode coiled material at formed wherein another compound mould release membrance on conducting surface of optics pressure-sensitive adhesive coating.
Based on one embodiment of the present of invention, this first printing element group adopts transparent electrically conductive ink and the opaque electrically conductive ink on-line continuous in seal back to be completed for printing respectively to this first transparency conductive electrode pattern and this first electrode cable; And this second printing element group adopts transparent electrically conductive ink and the opaque electrically conductive ink on-line continuous in seal back to be completed for printing respectively to this second transparency conductive electrode pattern and this second electrode cable.
According to one embodiment of present invention, this first printing element group adopts transparent disposable being completed for printing of electrically conductive ink in seal back to this first transparency conductive electrode pattern and this first electrode cable; And this second printing element group adopts transparent disposable being completed for printing of electrically conductive ink in seal back to this second transparency conductive electrode pattern and this second electrode cable.
Touch-screen printing and manufacturing method of the present invention is compared with dried, wet etching processing procedure with the gold-tinted processing procedure of traditional touch screen; All be a revolutionary innovation aspect material application and the simplification processing procedure, the manufacturing procedure of touch-screen is simplified greatly thus, and cost reduces; Yield improves; And overcome the bottleneck of processing dimension, can prepare the large scale flexible touch screen, touch-screen can be used in new field and significantly promote.
Particularly; The present invention utilizes flexible parent metal and nanometer technology; Can utilize nano material or organic macromolecule conducting material direct printing preparation conductive patterns on optical grade flexible material PET (polyethylene terephthalate) such as CNT, Nano Silver; Utilize unique " volume to volume " (" roll to roll ") processing procedure, can develop new large scale flexible touch screen product.The material aspect; The present invention uses CNT, silver nano material or organic macromolecule conducting material and directly prints according to formulating pattern, the electricity after the CNT printing film forming, optics, mechanical property and with all alternative existing ITO material of the bond strength of PET; Because adopt unique " volume to volume " processing procedure, conductive materials such as CNT are that printing on demand gets on, material cost and utilization factor all have very big advantage.The processing procedure aspect, " volume to volume " processing procedure and printing, complex technique and equipment that the present invention describes can make simplified working procedures, save material, manpower, and the production capacity yield significantly promotes.More, make touch-screen flexibility and large scale become possibility because the volume to volume processing procedure of web-like flexible material can be broken through the restriction of sheet and glass.Cooperate following flexible display technologies, wide touch application space is provided.
Utilize the present invention, the touch-screen size is unrestricted, and its size can be above 10 inches.The application that the present invention is forward-looking, and have the unsurpassable cost advantage of existing industry technology.Flexible display technologies development trend in conjunction with following has bigger application potential.
Through reading instructions, those of ordinary skills will understand characteristic and the aspect of these embodiment and other embodiment better.
Description of drawings
Below through with reference to accompanying drawing and combine instance to describe the present invention particularly; Advantage of the present invention and implementation will be more obvious; Wherein content shown in the accompanying drawing only is used for explaining to of the present invention, and does not constitute the restriction of going up in all senses of the present invention, in the accompanying drawings:
Fig. 1 is a first embodiment according to the invention, prepares the synoptic diagram of the equipment of the touch-control electrode coiled material that is used for flexible touch screen;
Fig. 2 is compounded to form the synoptic diagram of touch-control electrode coiled material for first embodiment according to the invention;
Fig. 3 is the schematic cross-section of the formed touch-screen of first embodiment according to the invention;
Fig. 4 is according to second embodiment of the present invention, prepares the synoptic diagram of the equipment of the touch-control electrode coiled material that is used for flexible touch screen;
Fig. 5 is the schematic cross-section according to second formed touch-screen of embodiment of the present invention;
Embodiment
Embodiment one
As illustrated in fig. 1 and 2; The plastic basis material volume of transparent insulation adopts PET (polyethylene terephthalate) the web-like film of high permeability, low haze; The one PET web-like film is through unreeling machine 1, tension control apparatus 2, corona equipment (not shown) and draw-gear 3; By printing element A1 will be in advance dispersed carbon nano tube printing ink by predetermined pattern printing (can adopt mode of printings such as inkjet printing, gravure, flexo, nano impression) at the pet sheet face; Print telltale mark simultaneously, through oven for drying, form the first transparency conductive electrode pattern then; Synchronously online again through printing element B1 with conductive silver paste or copper nano pulp by photocell eye or ccd image sensor 9 track and localization mark chromatographys (inkjet printing, gravure, silk-screen, nano impression) around the first transparency conductive electrode pattern; Form first electrode cable through oven dry (printing element carries baking oven) or sintering, process the first transparency conductive electrode layer (or claiming the X-direction conductive layer).Wherein, printing element A1 and printing element B1 form the first printing element group.
The 2nd PET web-like film is through unreeling machine 5, tension control apparatus 6, corona equipment (not shown) and draw-gear 7; By printing element A2 will be in advance dispersed carbon nano tube printing ink by predetermined pattern printing (can adopt mode of printings such as inkjet printing, gravure, flexo, nano impression) at the pet sheet face; Print telltale mark simultaneously; Through oven for drying, form the second transparency conductive electrode pattern then; Synchronously online again through printing element B2 with conductive silver paste or copper nano pulp by photocell eye or ccd image sensor 13 track and localization mark chromatographys (inkjet printing, gravure, silk-screen, nano impression) around the second transparency conductive electrode pattern; Form second electrode cable through oven dry or sintering, process the second transparency conductive electrode layer (or claiming the Y direction conductive layer).Wherein, printing element A2 and printing element B2 form the second printing element group.
Certainly, first, second transparency conductive electrode layer also can be accomplished by the independent substep of the first printing element group.
The first transparency conductive electrode layer is through apparatus for coating 4 coating optical cements; Formed the transparent insulation composite bed through baking oven C oven dry (but also the dried glued membrane of complex optics); Through hi-Fix set composite 8; Accurately be combined with each other (as shown in Figure 2) location by telltale mark by photocell eye or ccd image sensor 10,11,12 with the second transparency conductive electrode layer, process flexible double conductive electrode film coiled material through winder 14 rollings.
The compound flexible double conductive electrode film coiled material of processing through the method is at its drive surface transparent mould release membrance through optics pressure-sensitive adhesive coating PSA is compound again; Form flexible touch-control electrode coiled material through the winder rolling; Through cutting and cutting, promptly process flexible capacitance touch screen after adding flexible printed circuit board FPC and each electrode cable being connected.
Present embodiment provides the method for preparing the large scale flexible touch screen with the mode of volume to volume, and this touch-screen is a base material with the flexible optical level PET, forms transparent electrode pattern and conducting wire with the mode of printing at the pet sheet face.The method is the surface at web-like flexible parent metal PET; Utilize carbon nanotube ink to prepare the transparency conductive electrode pattern through various mode of printings such as inkjet printing, gravure, flexo or nano impressions; The conducting wire (or electrode cable) that links to each other with transparent electrode pattern with the method preparation through ink-jet, gravure, flexo, silk-screen or nano impression of Nano Silver or nanometer copper then; Process first, second transparency conductive electrode layer, wherein form the high transparent insulation glue-line (or transparent insulation composite bed) of optical grade at the first transparency conductive electrode laminar surface through the mode of gravure or coating optical cement or the mode of the dried glued membrane of coating optics, it is compound that the process hi-Fix set composite and the second transparency conductive electrode layer carry out the pattern location again; Form flexible double conductive electrode film coiled material; Through the composite transparent mould release membrance, form flexible touch-control electrode coiled material, through cutting and cutting; External flexible printed circuit board FPC forms flexible touch screen.
Can adopt automation equipments such as volume to volume inkjet printing, gravure, flexo, volume to volume silk-screen, nano impression that the transparency conductive electrode pattern (adopting the transparent electrically conductive ink in seal back) and electrode cable (the adopting opaque electrically conductive ink) on-line continuous of each layer are completed for printing in the present embodiment; First and second electrode cables can be accomplished by the chromatography nanometer silver paste, also comprise printing and silk-screen copper nano ink is accomplished through the UV sintering.Also can be with the transparency conductive electrode pattern of each layer and transparent disposable being completed for printing of electrically conductive ink after electrode cable adopts identical seal.
Electroconductive printing ink transparent behind the seal of present embodiment can also adopt other printing ink except carbon nanotube ink, like silver-colored nano ink, organic macromolecule conducting material etc.The hi-Fix set composite of present embodiment; Be that location that two volume transparency conductive electrode flexible materials are accomplished two-layer transparency conductive electrode patterned layer through high-precision location tracker and tension control apparatus is compound; Certainly those of ordinary skills can expect adopting any other hi-Fix set composite to realize the compound of two layers of flexible material; And; The transparency conductive electrode patterned layer can by product requirement with face to face, back-to-back, face is compound to multiple frame modes such as the back ofs the body, these methods are all within scope of the present invention.
As shown in Figure 2, utilize flexible touch-control electrode coiled material of the present invention through cut with cut, add flexible printed circuit board FPC and each electrode cable is connected after can form a plurality of flexible capacitance touch screens.Be illustrated in figure 3 as and tear the capacitance touch screen that has fitted to the present embodiment that is applied to LCDs on the face glass behind the mould release membrance, it comprises following structure: L1, glue-line (or PSA pressure-sensitive adhesive layer) is installed; L2, first pet layer; L3, the transparency conductive electrode pattern and the electrode cable that on first pet layer, print; L4, transparent insulation composite bed (or transparent insulation glue-line); L6, second pet layer; L5, the transparency conductive electrode pattern and the electrode cable that on second pet layer, print.Because present embodiment is flexible touch screen, tears and also can fit in curved glass panel behind the mould release membrance and be used for special applications.
Embodiment two
As shown in Figure 4; The plastic basis material volume of transparent insulation adopts PET (polyethylene terephthalate) the web-like film of high permeability, low haze; PET web-like film is through unreeling machine 101, tension control apparatus 102, corona equipment (not shown) and draw-gear 103; To in advance by printing element E1, dispersed carbon nano tube printing ink prints (can adopt mode of printings such as volume to volume inkjet printing, gravure, flexo, nano impression) front at PET respectively by predetermined pattern; Print telltale mark simultaneously, through oven for drying, form the first transparency conductive electrode pattern then; Synchronously online again through printing element F1 with conductive silver paste or copper nano pulp by photocell eye or ccd image sensor 109 track and localization mark chromatographys (volume to volume inkjet printing, gravure, volume to volume silk-screen, nano impression) around the first transparency conductive electrode pattern; Form first electrode cable through oven for drying or sintering, process the first transparency conductive electrode face (or claiming the X-direction conducting surface).Wherein, printing element E1 and printing element F1 form the first printing element group.
The PET film of printing completion first transparency conductive electrode layer and oven dry is through turning device D; The PET film of carrying is overturn; Again by printing element E2 will be in advance dispersed carbon nano tube printing ink follow the tracks of telltale mark on the first transparency conductive electrode layer by photocell eye or ccd image sensor 110 and press the predetermined pattern chromatography and print (volume to volume inkjet printing, gravure, flexo, nano impression) reverse side and first transparency conductive electrode pattern contraposition at PET; Print telltale mark simultaneously; Through oven for drying, form the second transparency conductive electrode pattern then; Synchronously online again through printing element F2 with conductive silver paste or copper nano pulp by photocell eye or ccd image sensor 111 track and localization mark chromatographys (volume to volume inkjet printing, gravure, volume to volume silk-screen, nano impression) around second transparent conductive patterns; Form second electrode cable through oven dry or sintering, process the second transparency conductive electrode face (or claiming the Y direction conducting surface).Wherein, printing element E2 and printing element F2 form the second printing element group.
Go up through apparatus for coating 104 coating diaphragms at formed one of them conducting surface (sensitive surface), or coating UV stiffened protective finish, also can add and cover transparent protective film protection, form the double-sided conductive film volume through winder 115 rollings.
Mould release membrance is transported to set composite 108 through unreeling machine 105, tension control apparatus 106 and draw-gear 107; Double-sided conductive film volume is again through unreeling machine 101, therein on another conducting surface (drive surface) again through apparatus for coating 104 optics pressure-sensitive adhesive coating through baking oven G oven dry and through the set composite 108 compound mould release membrances of going up, form flexible touch-control electrode coiled material.Through cutting and cutting, promptly process flexible capacitance touch screen after adding flexible printed circuit board FPC and each electrode cable being connected.
Can adopt automation equipments such as volume to volume inkjet printing, gravure, flexo, volume to volume silk-screen, nano impression that the transparency conductive electrode pattern (adopting the transparent electrically conductive ink in seal back) and electrode cable (the adopting opaque electrically conductive ink) on-line continuous of each layer are completed for printing in the present embodiment; First and second electrode cables can be accomplished by the chromatography nanometer silver paste, also comprise printing and silk-screen copper nano ink is accomplished through the UV sintering.Also can be with the transparency conductive electrode pattern of each layer and transparent disposable being completed for printing of electrically conductive ink after electrode cable adopts identical seal.
Electroconductive printing ink transparent behind the seal of present embodiment can also adopt other printing ink except carbon nanotube ink, like silver-colored nano ink, organic macromolecule conducting material etc.
Be illustrated in figure 5 as and tear the capacitance touch screen that has fitted to the present embodiment that is applied to LCDs on the face glass behind the mould release membrance, it comprises following structure: P1, glue-line (or PSA pressure-sensitive adhesive layer) is installed; P3, pet layer; P2, the transparency conductive electrode pattern and the electrode cable that print in the pet layer front; P4, at the transparency conductive electrode pattern and the electrode cable of pet layer back face printing; P5, protective finish.Because present embodiment is flexible touch screen, tears and also can fit in curved glass panel behind the mould release membrance and be used for special applications.
Above with reference to description of drawings the preferred embodiments of the present invention, those skilled in the art do not depart from the scope and spirit of the present invention, and can have multiple flexible program to realize the present invention.For example, the characteristic that illustrates or describe as the part of an embodiment can be used for another embodiment to obtain another embodiment.More than be merely the preferable feasible embodiment of the present invention, be not so limit to interest field of the present invention, the equivalence that all utilizations instructions of the present invention and accompanying drawing content are done changes, and all is contained within the interest field of the present invention.
Claims (10)
1. a method for preparing flexible touch screen is characterized in that comprising the following steps:
The X-direction conductive layer is provided; It is through adopting transparent at least one the first transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on the plastic basis material of first transparent insulation volume surface, and around the said first transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form first electrode cable that is connected with the said first transparency conductive electrode pattern and form;
The Y direction conductive layer is provided; It is through adopting transparent at least one the second transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on the plastic basis material of second transparent insulation volume surface, and around the said second transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form second electrode cable that is connected with the said second transparency conductive electrode pattern and form;
On one of them layer of said X-direction conductive layer and said Y direction conductive layer, form the transparent insulation composite bed, and utilize the transparent insulation composite bed that said X-direction conductive layer and said Y direction conductive layer are carried out pattern and accurately locate compound;
On the double-deck conductive electrode film after compound the optics pressure-sensitive adhesive coating and compound on mould release membrance, rolling forms flexible touch-control electrode coiled material;
After cutting and cutting, on said first electrode cable and second electrode cable, be connected flexible printed circuit board, thereby form flexible touch screen.
2. a method for preparing flexible touch screen is characterized in that comprising the following steps:
The X-direction conducting surface is provided; It is through adopting transparent at least one the first transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on one of them surface of the plastic basis material of transparent insulation volume, and around the said first transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form first electrode cable that is connected with the said first transparency conductive electrode pattern and form;
The Y direction conducting surface is provided; It is through adopting the second transparency conductive electrode pattern of the transparent disposable printing of electrically conductive ink in seal back at least one and the first transparency conductive electrode pattern contraposition on wherein another surface of the plastic basis material of the transparent insulation of having printed X-direction conducting surface volume, and adopts second electrode cable that the formation of electrically conductive ink positioning overprinting is connected with the said second transparency conductive electrode pattern on every side and form at the said second transparency conductive electrode pattern;
On formed one of them conducting surface, be coated with or add and cover diaphragm, or the coating protective finish;
On optics pressure-sensitive adhesive coating on formed wherein another conducting surface is also compound, behind the mould release membrance, form flexible touch-control electrode coiled material;
Touch-control electrode coiled material is connected flexible printed circuit board on said first electrode cable and second electrode cable after cutting and cutting, thereby form flexible touch screen.
3. the method for preparing flexible touch screen according to claim 1 and 2 is characterized in that, said first transparency conductive electrode pattern and said first electrode cable adopt transparent electrically conductive ink and the opaque electrically conductive ink on-line continuous in seal back to be completed for printing respectively; And said second transparency conductive electrode pattern and said second electrode cable adopt transparent electrically conductive ink and the opaque electrically conductive ink on-line continuous in seal back to be completed for printing respectively;
Perhaps, said first transparency conductive electrode pattern and said first electrode cable adopt transparent disposable being completed for printing of electric printing ink of leading in seal back; And said second transparency conductive electrode pattern and said second electrode cable adopt transparent disposable being completed for printing of electrically conductive ink in seal back.
4. the method for preparing flexible touch screen according to claim 1 and 2 is characterized in that, the plastic basis material volume of said transparent insulation adopts the polyethylene terephthalate plastics of high permeability, low haze.
5. the method for preparing flexible touch screen according to claim 1 and 2; It is characterized in that; The said first transparency conductive electrode pattern and the second transparency conductive electrode pattern adopt the volume to volume printing, comprise adopting the equipment of inkjet printing, gravure, flexo or nano impression to print; Said first electrode cable and second electrode cable adopt the volume to volume printing, comprise adopting the equipment of inkjet printing, gravure, flexo, volume to volume silk-screen or nano impression to print.
6. the method for preparing flexible touch screen according to claim 1 and 2; It is characterized in that; The transparent electrically conductive ink in said seal back that is used for the transparency conductive electrode pattern adopts nano material; Comprise carbon nanotube ink, silver-colored nano ink or organic macromolecule conducting material, the electrically conductive ink that is used for electrode cable adopts nano material, comprises nanometer silver paste, carbon nanotube ink or copper nano ink.
7. the method for preparing flexible touch screen according to claim 1 is characterized in that, said transparent insulation composite bed is employed on said X-direction conductive layer or the said Y direction conductive layer gravure or coating optical cement, or adds and cover the dried glued membrane of optics and form.
8. equipment for preparing the touch-control electrode coiled material that is used for flexible touch screen is characterized in that comprising:
The first printing element group; On the transport path that its plastic basis material that is arranged on first transparent insulation is rolled up; Be used to form the X-direction conductive layer; Said X-direction conductive layer is through adopting transparent at least one the first transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on the plastic basis material of first transparent insulation volume surface, and around the said first transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form first electrode cable that is connected with the said first transparency conductive electrode pattern and form;
The second printing element group; On the transport path that its plastic basis material that is arranged on second transparent insulation is rolled up; Be used to form the Y direction conductive layer; Said Y direction conductive layer is through adopting transparent at least one the second transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on the plastic basis material of second transparent insulation volume surface, and around the said second transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form second electrode cable that is connected with the said second transparency conductive electrode pattern and form;
Coating or add coating device is used for formation transparent insulation composite bed on one of them layer of said X-direction conductive layer and said Y direction conductive layer; And be used for wherein optics pressure-sensitive adhesive coating of the double-deck conductive electrode film after compound;
The location set composite is used for that said X-direction conductive layer and said Y direction conductive layer are carried out pattern through formed transparent insulation composite bed and accurately locatees compoundly, forms double-deck conductive electrode coiled material; And be used for forming flexible touch-control electrode coiled material again behind the mould release membrance on compound on the double-deck conductive electrode film of the pressure-sensitive adhesive coating of optics after compound.
9. equipment for preparing the touch-control electrode coiled material that is used for flexible touch screen is characterized in that comprising:
The first printing element group; On the transport path that its plastic basis material that is arranged on transparent insulation is rolled up; Be used to form the X-direction conducting surface; Said X-direction conducting surface is through adopting transparent at least one the first transparency conductive electrode pattern of the disposable printing of electrically conductive ink in seal back on one of them surface of the plastic basis material of transparent insulation volume, and around the said first transparency conductive electrode pattern, adopts the electrically conductive ink positioning overprinting to form first electrode cable that is connected with the said first transparency conductive electrode pattern and form;
Turning device, its plastic basis material with the transparent insulation of being carried overturns;
The second printing element group; On the transport path that its plastic basis material that is arranged on the transparent insulation after the upset is rolled up; Be used to form the Y direction conducting surface; Said Y direction conducting surface is through adopting the second transparency conductive electrode pattern of the transparent disposable printing of electrically conductive ink in seal back at least one and the first transparency conductive electrode pattern contraposition on wherein another surface of the plastic basis material of the transparent insulation of having printed X-direction conducting surface volume, and adopts second electrode cable that the formation of electrically conductive ink positioning overprinting is connected with the said second transparency conductive electrode pattern on every side and form at the said second transparency conductive electrode pattern;
Coating or add coating device, it be coated with or adds on formed one of them conducting surface and covers diaphragm, or is coated with protective finish, optics pressure-sensitive adhesive coating on another conducting surface;
Set composite, its formed wherein another on the conducting surface of optics pressure-sensitive adhesive coating compound on behind the mould release membrance, form flexible touch-control electrode coiled material.
According to Claim 8 or 9 described preparations be used for the equipment of the touch-control electrode coiled material of flexible touch screen; It is characterized in that the said first printing element group adopts transparent electrically conductive ink and the opaque electrically conductive ink on-line continuous in seal back to be completed for printing respectively to said first transparency conductive electrode pattern and said first electrode cable; And the said second printing element group adopts transparent electrically conductive ink and the opaque electrically conductive ink on-line continuous in seal back to be completed for printing respectively to said second transparency conductive electrode pattern and said second electrode cable;
Perhaps, the said first printing element group adopts transparent disposable being completed for printing of electrically conductive ink in seal back to said first transparency conductive electrode pattern and said first electrode cable; And the said second printing element group adopts transparent disposable being completed for printing of electrically conductive ink in seal back to said second transparency conductive electrode pattern and said second electrode cable.
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| CN201210111008.6A CN102662522B (en) | 2012-04-16 | 2012-04-16 | Prepare the method for flexible touch screen and the equipment of preparation touch control electrode coiled material |
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