CN102819339B - Production method of touch panels - Google Patents
Production method of touch panels Download PDFInfo
- Publication number
- CN102819339B CN102819339B CN201110154072.8A CN201110154072A CN102819339B CN 102819339 B CN102819339 B CN 102819339B CN 201110154072 A CN201110154072 A CN 201110154072A CN 102819339 B CN102819339 B CN 102819339B
- Authority
- CN
- China
- Prior art keywords
- layer
- carbon nanotube
- nanotube layer
- adhesive
- conducting wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Position Input By Displaying (AREA)
- Push-Button Switches (AREA)
Abstract
The invention relates to a production method of touch panels. The production method includes the steps of providing an insulating substrate provided with a touch area and a wiring area on one surface; forming an adhesive layer on the surface of the insulating substrate; forming a carbon nanotube layer on the surface of the adhesive layer and solidifying the adhesive layer; forming electrodes and conductive circuits on the surface of the carbon nanotube layer; and removing the exposed carbon nanotube layer in the wiring area.
Description
Technical field
The present invention relates to a kind of preparation method of touch panel, particularly relate to a kind of preparation method of the touch panel based on carbon nano-tube.
Background technology
In recent years, along with high performance and the diversified development of the various electronic equipments such as mobile phone and touch navigation system, the electronic equipment installing the touch-screen of light transmission before the display devices such as liquid crystal progressively increases.The user of such electronic equipment, by touch-screen, carries out visual confirmation to the displaying contents of the display device being positioned at the touch-screen back side, while utilize the pressing touch-screens such as finger or pointer to operate.Thus, can the various functions of operating electronic equipment.
According to the principle of work of touch-screen and the difference of transmission medium, existing touch-screen is divided into Four types, is respectively resistance-type, condenser type, infrared-type and surface acoustic wave type.Wherein the Application comparison of capacitive touch screen and resistive touch screen is extensive.
Condenser type of the prior art and resistive touch screen generally include at least one indium tin oxide layer as transparency conducting layer (ITO layer).But ITO layer adopts the technique such as ion beam sputtering or evaporation to prepare as transparency conducting layer usually, in the process of preparation, need higher vacuum environment and need to be heated to 200 DEG C ~ 300 DEG C, therefore, making the preparation cost of ITO layer higher.In addition, go usual first laser ablation except part ITO layer Screen-printed conductive circuit more existing preparation in the method for touch-screen.Because laser ablation and Screen-printed conductive circuit respectively need a contraposition mask, so preparation cost is higher, and two different contraposition masks the tolerance made comparatively large, so add the difficulty of preparation technology.
Summary of the invention
In view of this, necessaryly provide a kind of preparation cost low, and the preparation method of the simple touch panel of technique.
A preparation method for touch panel, the method comprises the following steps: provide a dielectric base, surface definition one touch area of this dielectric base and a routing region; An adhesive-layer is formed on the described surface of described dielectric base; Form a carbon nanotube layer on described adhesive-layer surface, and solidify described adhesive-layer; In described carbon nanotube layer table surface forming electrode and conducting wire; And remove the carbon nanotube layer being positioned at routing region and exposing.
Compared with prior art, the preparation method of the touch panel that the embodiment of the present invention provides has the following advantages: the first, because carbon nanotube layer is simpler than the preparation technology of ITO layer, thus reduces preparation cost.The second, due to first in carbon nanotube layer table surface forming electrode and conducting wire, then remove the carbon nanotube layer being positioned at routing region and exposing, so the part carbon nanotube layer that electrode and conducting wire cover is retained, and form composite structure with electrode and conducting wire.
Accompanying drawing explanation
The vertical view of the touch panel that Fig. 1 provides for the embodiment of the present invention.
Fig. 2 is the sectional view of the touch panel II-II along the line of Fig. 1.
Fig. 3 is the stereoscan photograph of the transparency conducting layer in the touch panel of Fig. 1.
The process chart of the single touch panel of preparation that Fig. 4 provides for the embodiment of the present invention.
The process chart of the multiple touch panel of preparation that Fig. 5 provides for the embodiment of the present invention.
Fig. 6 is the vertical view of the step one of the process chart of Fig. 5.
Fig. 7 is the vertical view of the step 3 of the process chart of Fig. 5.
Fig. 8 is the vertical view of the step 4 of the process chart of Fig. 5.
Fig. 9 is the vertical view of the step 6 of the process chart of Fig. 5.
Main element symbol description
| Touch panel | 10 |
| Touch area | 10A |
| Routing region | 10B |
| Dielectric base | 12 |
| Target area | 120 |
| Cabling target area | 122 |
| Touch-control target area | 124 |
| Adhesive-layer | 13 |
| Transparency conducting layer | 14 |
| Carbon nano tube line | 15 |
| Electrode | 16 |
| Laser | 17 |
| Conducting wire | 18 |
| Carbon nanotube layer | 19 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Below in conjunction with the accompanying drawings and the specific embodiments, touch panel provided by the invention and preparation method thereof is described in further detail.
Refer to Fig. 1 and Fig. 2, the embodiment of the present invention provides a kind of touch panel 10, and this touch panel 10 comprises dielectric base 12, adhesive-layer 13, transparency conducting layer 14, at least one electrode 16, and a conducting wire 18.
Described touch panel 10 definition has two regions: an a touch area 10A and routing region 10B.Described touch area 10A is the region that described touch panel 10 touchedly can realize touch controllable function, and described routing region 10B is the setting area of conducting wire 18 in described touch panel 10.Described routing region 10B is the submarginal region compared with small size of touch panel 10, and it can be positioned at least side of touch area 10A.Described touch area 10A is the region of the larger area comprising touch panel 10 central area.Described routing region 10B is usually located at the periphery of described touch area 10A.The position relationship of described touch area 10A and routing region 10B is not limit, and can select as required.Below provide when described touch panel 10 is for rectangle, several position relationships of touch area 10A and routing region 10B.In the present embodiment, described touch area 10A is the central area of touch panel 10, and described routing region 10B is around touch area 10A.The shape of described touch area 10A and area identical with the shape of touch panel 10 is less than the area of touch panel 10, and described routing region 10B is other region beyond the 10A of touch area.
Described adhesive-layer 13 is arranged at a surface of dielectric base 12.Described transparency conducting layer 14 and conducting wire 18 are arranged at a surface of adhesive-layer 13 respectively.Described electrode 16 is arranged at transparency conducting layer 14 surface.Wherein, described transparency conducting layer 14 is only arranged at the surface that dielectric base 12 is positioned at touch area 10A.Described conducting wire 18 is only arranged at the surface that dielectric base 12 is positioned at routing region 10B.Described electrode 16 is arranged at least one side of described transparency conducting layer 14, and is electrically connected respectively with conducting wire 18 and transparency conducting layer 14.This transparency conducting layer 14 is electrically connected with an external circuits (not shown) by described conducting wire 18.Because transparency conducting layer 14 of the present invention is only arranged at the surface that dielectric base 12 is positioned at touch area 10A, and conducting wire 18 is only arranged at the surface that dielectric base 12 is positioned at routing region 10B, namely, transparency conducting layer 14 and conducting wire 18 do not have overlapping part, so when pointer or finger touch routing region 10B, capacitance interference signal can not be produced between conducting wire 18 and transparency conducting layer 14, thus further increase the accuracy of touch-screen.
Described dielectric base 12 is the structure of a curved face type or plane.This dielectric base 12 has suitable transparency, and mainly plays a part to support.This dielectric base 12 is formed by the hard materials such as glass, quartz, adamas or plastics or flexible material.Particularly, described flexible material may be selected to be the polyester materials such as polycarbonate (PC), polymethylmethacrylate (PMMA), tygon (PE), polyimide (PI) or polyethylene terephthalate (PET), or the material such as polyethersulfone (PES), cellulose esters, Polyvinylchloride (PVC), benzocyclobutene (BCB) or acryl resin.In the present embodiment, described dielectric base 12 is the structure of a plane, and this dielectric base 12 is flexible polycarbonate (PC).Be appreciated that the material forming described dielectric base 12 is not limited to the above-mentioned material enumerated, as long as dielectric base 12 can be made to play the effect of support, and there is suitable transparency.
Described transparency conducting layer 14 comprises a carbon nanotube layer.Described carbon nanotube layer is made up of some carbon nano-tube, and in this carbon nanotube layer, the bearing of trend of most of carbon nano-tube is basically parallel to the surface of this carbon nanotube layer.The thickness of described carbon nanotube layer is not limit, and can select as required; The thickness of described carbon nanotube layer is 0.5 nanometer ~ 100 micron; Preferably, the thickness of this carbon nanotube layer is 100 nanometer ~ 200 nanometers.Distribute due to the even carbon nanotube in described carbon nanotube layer and there is good pliability, making this carbon nanotube layer have good pliability, arbitrary shape can be become and not easily break by bending fold.In the present embodiment, described transparency conducting layer 14 is only a carbon nanotube layer.
Carbon nano-tube in described carbon nanotube layer comprise in Single Walled Carbon Nanotube, double-walled carbon nano-tube and multi-walled carbon nano-tubes one or more.The diameter of described Single Walled Carbon Nanotube is 0.5 nanometer ~ 50 nanometer, and the diameter of double-walled carbon nano-tube is 1.0 nanometer ~ 50 nanometers, and the diameter of multi-walled carbon nano-tubes is 1.5 nanometer ~ 50 nanometers.The length of described carbon nano-tube is greater than 50 microns.Preferably, the length of this carbon nano-tube is preferably 200 microns ~ 900 microns.
Unordered or the ordered arrangement of carbon nano-tube in described carbon nanotube layer.So-called lack of alignment refers to that the orientation of carbon nano-tube is random.So-called ordered arrangement refers to that the orientation of carbon nano-tube is regular.Particularly, when carbon nanotube layer comprises the carbon nano-tube of lack of alignment, carbon nano-tube is wound around or isotropy arrangement mutually; When carbon nanotube layer comprises the carbon nano-tube of ordered arrangement, carbon nano-tube is arranged of preferred orient along a direction or multiple directions.So-called " preferred orientation " refers to that the most of carbon nano-tube in described carbon nanotube layer have larger orientation probability on a direction or several direction; That is, the most of carbon nano-tube in this carbon nanotube layer axially substantially in the same direction or several direction extend.Between adjacent carbon nano-tube among described carbon nanotube layer, there is gap, thus in carbon nanotube layer, form multiple gap.
Described carbon nanotube layer comprises at least one carbon nano-tube film.When described carbon nanotube layer comprises multiple carbon nano-tube film, this carbon nano-tube film can the coplanar setting of substantially parallel gapless or stacked setting.Refer to Fig. 3, the self supporting structure that described carbon nano-tube film is made up of some carbon nano-tube.Described some carbon nano-tube are arranged of preferred orient in the same direction.In this carbon nano-tube film, the overall bearing of trend of most of carbon nano-tube substantially in the same direction.And the overall bearing of trend of described most of carbon nano-tube is basically parallel to the surface of carbon nano-tube film.Further, in described carbon nano-tube film, most carbon nano-tube is joined end to end by Van der Waals (Van Der Waals) power.Particularly, in the most of carbon nano-tube extended substantially in the same direction in described carbon nano-tube film, each carbon nano-tube and carbon nano-tube adjacent are in the direction of extension joined end to end by Van der Waals force.Certainly, there is the carbon nano-tube of minority random alignment in described carbon nano-tube film, these carbon nano-tube can not form obviously impact to the overall orientation arrangement of carbon nano-tube most of in carbon nano-tube film.Described carbon nano-tube film does not need large-area carrier supported, as long as and relatively both sides provide support power can be unsettled on the whole and keep self membranaceous state, when being placed on (or being fixed on) spaced two supporters by this carbon nano-tube film, the carbon nano-tube film between two supporters can the membranaceous state of unsettled maintenance self.
Particularly, the most carbon nano-tube extended substantially in the same direction in described carbon nano-tube film, and nisi linearity, can be suitable bend; Or and non-fully arranges according on bearing of trend, can be suitable depart from bearing of trend.Therefore, can not get rid of between carbon nano-tube arranged side by side in the most carbon nano-tube extended substantially in the same direction of carbon nano-tube film and may there is part contact.
Particularly, described carbon nano-tube film comprise multiple continuously and the carbon nano-tube fragment aligned.The plurality of carbon nano-tube fragment is joined end to end by Van der Waals force.Each carbon nano-tube fragment comprises multiple carbon nano-tube be parallel to each other, and the plurality of carbon nano-tube be parallel to each other is combined closely by Van der Waals force.This carbon nano-tube fragment has arbitrary length, thickness, homogeneity and shape.Carbon nano-tube in this carbon nano-tube film is arranged of preferred orient in the same direction.
Described carbon nano-tube film obtains by directly pulling from carbon nano pipe array.Be appreciated that by by parallel for multiple carbon nano-tube film and the coplanar laying of gapless or/and stacked laying, the carbon nanotube layer of different area and thickness can be prepared.The thickness of each carbon nano-tube film can be 0.5 nanometer ~ 100 micron.When carbon nanotube layer comprises the carbon nano-tube film of multiple stacked setting, the orientation shape of the carbon nano-tube in adjacent carbon nano-tube film has angle α, 0≤α≤90.
Described carbon nano-tube film obtains by directly pulling from carbon nano pipe array.Particularly, first on the substrate of quartz or wafer or other material, grow carbon nano pipe array, such as, use long-pending (Chemical Vapor Deposition, the CVD) method in chemical gaseous phase Shen; Then, with stretching technique, carbon nano-tube pulled out one by one from carbon nano pipe array and formed.These carbon nano-tube are joined end to end by Van der Waals force, form tool certain orientation and the conductive elongate structure of almost parallel arrangement.The minimum electrical impedance of direction tool that the carbon nano-tube film formed can stretch, and perpendicular to the maximum electrical impedance of draw direction tool, thus possess electrical impedance anisotropy.
Described adhesive-layer 13 is transparent.The effect of described adhesive-layer 13 is the surfaces in order to make described carbon nanotube layer adhere to described dielectric base 12 better.Described carbon nanotube layer is fixed on dielectric base 12 surface by described adhesive-layer 13, and part is embedded in described adhesive-layer 13, and part is exposed to outside adhesive-layer 13.In the present embodiment, the most of carbon nanotube portion surfaces in described carbon nanotube layer are embedded in adhesive-layer 13, and part surface is exposed to outside adhesive-layer 13.Described adhesive-layer 13 is transparent, and the material of this adhesive-layer 13 is thermoplastic or the UV(Ultraviolet Rays with low melting point) glue, as PVC or PMMA etc.The thickness of described adhesive-layer 13 is 1 nanometer ~ 500 micron; Preferably, the thickness of described adhesive-layer 13 is 1 micron ~ 2 microns.In the present embodiment, the material of described adhesive-layer 13 is UV glue, and the thickness of this adhesive-layer 13 is about 1.5 microns.
Described electrode 16 is arranged at described transparency conducting layer 14 surface, and is positioned at least one side of transparency conducting layer 14.The setting position of described electrode 16 is relevant with touch point detection method with the touch-control principle of the touch-screen adopting this touch panel 10, the number of described electrode 16 is relevant with touch-control resolution with the area of this touch panel 10, can select according to practical application situation.When the area of touch panel 10 is larger, when resolution requirement is higher, the number of described electrode 16 is more.Vice versa.In the present embodiment, described touch panel 10 comprises six electrodes 16, and these six electrodes 16 are arranged at intervals at transparency conducting layer 14 side.Described electrode 16 is arranged at carbon nanotube layer surface to be covered by part carbon nanotube layer.Described electrode 16 forms composite structure with the carbon nanotube layer covered.The material of described electrode 16 is other conductive materials such as metal, electrocondution slurry or ITO, as long as guarantee that this electrode 16 can conduct electricity.Described electrode 16 can pass through etching conductive film, as metallic film or indium tin oxide films preparation, also can be prepared by silk screen print method.
Described conducting wire 18 comprises multiple wire, and its material can be other conductive materials such as metal, electrocondution slurry or ITO.Etching conductive film can be passed through in described conducting wire 18, as metallic film or indium tin oxide films preparation, also can be prepared by silk screen print method.In the present embodiment, described electrode 16 and conducting wire 18 are electrocondution slurry, and described electrode 16 and conducting wire 18 are integrally formed by Screen-printed conductive slurry.The composition of this electrocondution slurry comprises metal powder, glass powder with low melting point and cementing agent.Wherein, this metal powder is preferably silver powder, and this cementing agent is preferably terpinol or ethyl cellulose.In this electrocondution slurry, the weight ratio of metal powder is 50% ~ 90%, and the weight ratio of glass powder with low melting point is 2% ~ 10%, and the weight ratio of cementing agent is 8% ~ 40%.
Further, described touch panel 10 comprises multiple carbon nano tube line 15.Described carbon nano tube line 15 is arranged between conducting wire 18 and adhesive-layer 13.Described carbon nano tube line 15 comprises multiple carbon nano-tube, and its structure is identical with the structure of the above-mentioned carbon nanotube layer as transparency conducting layer 14.To be width narrower for carbon nano tube line 15 herein, the carbon nanotube layer that length-diameter ratio is larger.Described carbon nano tube line 15 is structure as a whole with the carbon nanotube layer as transparency conducting layer 14, and namely carbon nano tube line 15 is the extension of the carbon nanotube layer as transparency conducting layer 14.Carbon nanotube portion in described carbon nano tube line 15 is coated between adhesive-layer 13, and part is coated in conducting wire 18, to form composite structure with conducting wire 18.This structure makes conducting wire 18 more firm with the combination of dielectric base 12.And, due to the electric conductivity that carbon nano-tube is excellent, the electric conductivity of conducting wire 18 is strengthened.Because described carbon nano tube line 15 and the carbon nanotube layer as transparency conducting layer 14 are structure as a whole, thus it is in electrical contact to improve between conducting wire 18 and transparency conducting layer 14.Please understand described transparency conducting layer 14, the structure of electrode 16 and conducting wire 18 and position relationship with further reference to the preparation method once about touch panel 10.
The touch-screen that the embodiment of the present invention provides has the following advantages: first, carbon nano-tube has excellent mechanical characteristic and makes carbon nanotube layer have good toughness and physical strength, and resistance to bending, therefore adopt carbon nanotube layer as transparency conducting layer, the durability of touch-screen can be improved accordingly; And then improve the durability of the display device using this touch-screen; The second, because carbon nanotube layer comprises multiple equally distributed carbon nano-tube, therefore this carbon nanotube layer also has the distribution of uniform resistance, therefore, adopts this carbon nanotube layer can improve sensitivity and the degree of accuracy of touch-screen accordingly as transparency conducting layer; 3rd, because carbon nanotube layer is only arranged at the surface that dielectric base is positioned at touch area, and conducting wire is only arranged at the surface that dielectric base is positioned at routing region, namely, carbon nanotube layer and conducting wire do not have overlapping part, so when pointer or finger touch routing region, capacitance interference signal can not be produced between conducting wire and carbon nanotube layer, thus improve the accuracy of touch-screen; 4th, because carbon nano tube line and conducting wire form composite structure, so make the electric conductivity of conducting wire strengthen; 5th, because described carbon nano tube line is structure as a whole with as the carbon nanotube layer of transparency conducting layer, thus it is in electrical contact to improve between conducting wire and transparency conducting layer.
Refer to Fig. 4, the embodiment of the present invention provides a kind of method once preparing single touch panel 10 further, and it comprises the following steps:
Step one, provides a dielectric base 12, a surface set one touch area 10A of this dielectric base 12 and routing region 10B.
In the present embodiment, described dielectric base 12 is a PET film.
Step 2, forms an adhesive-layer 13 on the described surface of described dielectric base 12.
The method of described formation one adhesive-layer 13 can be spin-coating method, spraying process, brushing etc.In the present embodiment, described adhesive-layer 13 is the UV glue-line that a thickness is about 1.5 microns, and it is formed at the whole surface of PET film, as spin-coating method, spraying process or spread coating by the method for coating.
Step 3, forms a carbon nanotube layer 19 on described adhesive-layer 13 surface, and solidifies described adhesive-layer 13, to be fixed by carbon nanotube layer 19.
Described carbon nanotube layer can be formed at adhesive-layer 13 surface by methods such as printing, deposition or direct layings.In the present embodiment, described carbon nanotube layer 19 is a carbon nano-tube film with self-supporting effect, and it directly can be layed in whole adhesive-layer 13 surface.After carbon nanotube layer 19 is formed at adhesive-layer 13 surface, carbon nanotube layer 19 meeting partial wetting is in adhesive-layer 13, and is combined with adhesive-layer 13 by cohesive force.Preferably, the carbon nanotube portion in described carbon nanotube layer 19 infiltrates in adhesive-layer 13, and part is exposed to outside adhesive-layer 13.
The method of described solidification adhesive-layer 13 is relevant with adhesive-layer 13 material, needs the Material selec-tion according to adhesive-layer 13.Because carbon nanotube layer 19 infiltrates in adhesive-layer 13, so be fixed in the process that in this step, carbon nanotube layer 19 can solidify at adhesive-layer 13.In the present embodiment, make UV adhesive curing by the method for UV-irradiation.The time of described UV-irradiation is 2 seconds ~ 30 seconds.In the present embodiment, the time of described UV-irradiation is 4 seconds.
Step 4, shows surface forming electrode 16 and conducting wire 18 at described carbon nanotube layer 19.
The method preparations such as silk screen print method, chemical vapor deposition, magnetron sputtering can be passed through in described electrode 16 and conducting wire 18.Described electrode 16 is formed at the surface that carbon nanotube layer 19 is positioned at touch area 10A, and conducting wire 18 is formed at the surface that carbon nanotube layer 19 is positioned at routing region 10B.In this step, described electrode 16 and cover part, conducting wire 18 carbon nanotube layer 19, and form composite structure with the carbon nanotube layer 19 that this part covers.Between carbon nano-tube due to carbon nanotube layer 19, there is gap, so the material of electrode 16 and conducting wire 18 can penetrate in the gap of carbon nanotube layer 19, and be combined with carbon nano-tube.In the present embodiment, described electrode 16 and conducting wire 18 are integrally formed by Screen-printed conductive slurry.Before this electrocondution slurry is dried, mutually can infiltrate with the part carbon nanotube layer 19 covered and form composite structure, and in drying course, this part carbon nanotube layer 19 is coated and fixed.
Step 5, removes the carbon nanotube layer 19 being positioned at routing region 10B and exposing.
Described removal be positioned at that routing region 10B exposes the method for carbon nanotube layer 19 can be laser ablation, particle beams etching or beamwriter lithography etc.Described conducting wire 18 can as remove be positioned at that routing region 10B exposes carbon nanotube layer 19 time required contraposition mask.
In the present embodiment, controlling laser 17 mobile route by computing machine, to remove the carbon nanotube layer 19 being positioned at routing region 10B and exposing, thus retaining except being positioned at the carbon nanotube layer 19 of touch area 10A as transparency conducting layer 14.Meanwhile, be positioned at routing region 10B and be also retained by the part carbon nanotube layer 19 that conducting wire 18 covers thus form carbon nano tube line 15.This carbon nano tube line 15 forms composite structure with conducting wire 18.
Be appreciated that the conducting wire 18 of described serigraphy can be used as contraposition mask (mark) required when laser 17 etches.Because the part carbon nanotube layer 19 of routing region 10B is covered by conducting wire 18, so this part carbon nanotube layer 19 is retained.This processing procedure is called " self alignment ", can simplify preparation technology.If select first laser 17 to etch, then form the processing procedure of conducting wire 18, then laser 17 etching and Screen-printed conductive circuit 18 respectively need a contraposition mask.Due to two different contraposition masks the tolerance made comparatively large, so add the difficulty of preparation technology.Further, first laser 17 etches, then needs adhesive-layer 13 planarization after first making laser 17 etch in the processing procedure forming conducting wire 18, then could Screen-printed conductive circuit 18.And the processing procedure of the present embodiment avoids the step making its planarization, both can simplify preparation technology, can preparation cost be reduced again.
Be appreciated that, an optical clear glue-line (OCA Layer) and a cover plate (Cover Lens) are set by the surface of the touch panel 10 prepared at the present embodiment, thus cover above-mentioned transparency conducting layer 14, electrode 16 and conducting wire 18 and can obtain a touch-screen.Touch panel 10 provided by the invention also may be used for the touch-screen of the various employing structure of transparent conductive layer such as condenser type single-point touch-screen, capacitive multi-point touch screen, resistance-type single-point touch-screen, resistance-type multi touch screen.
Refer to Fig. 5, the embodiment of the present invention provides a kind of method once preparing multiple touch panel 10 further, and it comprises the following steps:
Step one, provides a dielectric base 12, and a surface of this dielectric base 12 comprises multiple target area 120, and each target area 120 sets touch-control target area 124 and a cabling target area 122.
Please consult Fig. 6 further, shape and the size of described multiple target area 120 can be selected according to actual needs.Described touch-control target area 124 is the region corresponding with the touch area 10A of touch panel 10 to be prepared, described dielectric base 12 surface.Described cabling target area 122 is the region corresponding with the routing region 10B of touch panel 10 to be prepared, described dielectric base 12 surface.In the present embodiment, described dielectric base 12 is the structure of a plane, and this dielectric base 12 is flexible material PET.Dielectric base 12 is divided into the identical target area 120 of 9 parts of sizes that 3 row 3 arrange by the present embodiment.Described touch-control target area 124 is the central area of target area 120, and described cabling target area 122 is around touch-control target area 124.The shape of described touch-control target area 124 and area identical with the shape of target area 120 is less than the area of target area 120, and described cabling target area 122 is other region beyond touch-control target area 124.
Step 2, forms an adhesive-layer 13 on the described surface of described dielectric base 12.
Described adhesive-layer 13 is transparent.The method of described formation one adhesive-layer 13 can be spin-coating method, spraying process, brushing etc.In the present embodiment, described adhesive-layer 13 is the UV glue-line that a thickness is about 1.5 microns, and it is formed at PET film one surface by the method for coating.
Step 3, forms a carbon nanotube layer 19 on a surface of described adhesive-layer 13, and solidifies described adhesive-layer 13, with by carbon nanotube layer 19 fix.
In the present embodiment, described carbon nanotube layer 19 is a carbon nano-tube film with self-supporting effect, and it directly can be layed in whole adhesive-layer 13 surface.The width of the Single Carbon Nanotubes film pulled out from carbon nano pipe array is appreciated that due to by large plate processing procedure, once prepares multiple touch panel, so may be less than the width of adhesive-layer 13.Therefore, also parallel for multiple carbon nano-tube film gapless can be arranged to be combined into the larger carbon nanotube layer 19 of an area.Preferably, the splicing line of adjacent two carbon nano-tube films is made to overlap with adjacent rows or two middle cut line arranging target area 120.
After carbon nanotube layer 19 is formed at adhesive-layer 13 surface, carbon nanotube layer 19 meeting partial wetting is in adhesive-layer 13, and is combined with adhesive-layer 13 by cohesive force.Preferably, the carbon nanotube portion in described carbon nanotube layer 19 infiltrates in adhesive-layer 13, and part is exposed to outside adhesive-layer 13.
The method of described solidification adhesive-layer 13 is relevant with adhesive-layer 13 material, needs the Material selec-tion according to adhesive-layer 13.Because carbon nanotube layer 19 infiltrates in adhesive-layer 13, so be fixed in the process that in this step, carbon nanotube layer 19 can solidify at adhesive-layer 13.In the present embodiment, make UV adhesive curing by the method for UV-irradiation.The time of described UV-irradiation is 4 seconds.
Step 4, the carbon nanotube layer 19 in each target area 120 shows surface forming electrode 16 and conducting wire 18.
The method preparations such as silk screen print method, chemical vapor deposition, magnetron sputtering can be passed through in described electrode 16 and conducting wire 18.Refer to Fig. 8, described electrode 16 is formed at the surface that carbon nanotube layer 19 is positioned at touch-control target area 124, and conducting wire 18 is formed at the surface that carbon nanotube layer 19 is positioned at cabling target area 122.
In this step, described electrode 16 and cover part, conducting wire 18 carbon nanotube layer 19, and form composite structure with the carbon nanotube layer 19 that this part covers.Between carbon nano-tube due to carbon nanotube layer 19, there is gap, so the material of electrode 16 and conducting wire 18 can penetrate in the gap of carbon nanotube layer 19, and be combined with carbon nano-tube.In the present embodiment, described electrode 16 and conducting wire 18 are integrally formed by Screen-printed conductive slurry.Before this electrocondution slurry is dried, mutually can infiltrate with the part carbon nanotube layer 19 covered and form composite structure.
Step 5, removes the carbon nanotube layer 19 being positioned at cabling target area 122 and exposing.
In the present embodiment, controlling laser 17 mobile route by computing machine, to remove the carbon nanotube layer 19 being positioned at cabling target area 122 and exposing, thus retaining except being positioned at the carbon nanotube layer 19 of touch-control target area 124 as transparency conducting layer 14.Meanwhile, be positioned at cabling target area 122 and be also retained by the part carbon nanotube layer 19 that conducting wire 18 covers and form carbon nano tube line 15.This carbon nano tube line 15 forms composite structure with conducting wire 18.
Step 6, cutting obtains multiple touch panel 10.
The step that described cutting obtains multiple touch panel 10 can be realized by the method such as cut, machine cuts.In the present embodiment, be separated by each target area 120 of machine cuts by dielectric base 12, thus obtain multiple touch panel 10.Particularly, middle cut line first along two row or two row target areas 120 cuts described dielectric base 12 perpendicular to dielectric base 12 thickness direction, cut described dielectric base 12 along the line of cut in the middle of two adjacent target areas 120 perpendicular to dielectric base 12 thickness direction again, so can obtain multiple touch panel 10.
Be appreciated that, before described cutting obtains the step of multiple touch panel 10, an optical clear glue-line (OCA Layer) and a cover plate (Cover Lens) can also be set, to cover all transparency conducting layers 14, electrode 16 and conducting wire 18 on the surface of dielectric base 12.Then, multiple touch-screen can be obtained by cutting.
Be appreciated that touch panel 10 provided by the invention goes for the touch-screen of the various employing structure of transparent conductive layer such as condenser type single-point touch-screen, capacitive multi-point touch screen, resistance-type single-point touch-screen, resistance-type multi touch screen.
The touch-screen that the embodiment of the present invention provides has the following advantages: the first, because carbon nanotube layer is simpler than the preparation technology of ITO layer, thus reduces preparation cost.The second, due to first in carbon nanotube layer table surface forming electrode and conducting wire, then remove the carbon nanotube layer being positioned at routing region and exposing, so the part carbon nanotube layer that electrode and conducting wire cover is retained, and form composite structure with electrode and conducting wire.3rd, the carbon nanotube layer adopting laser ablation to remove to be positioned at routing region and to expose, contraposition mask required when conducting wire can be used as laser ablation, thus simplify preparation technology.4th, by large plate processing procedure, once prepare multiple touch panel, simplify technological process, improve preparation efficiency, reduce preparation cost.
In addition, those skilled in the art can also do other changes in spirit of the present invention, and these changes done according to the present invention's spirit all should be included in the present invention's scope required for protection.
Claims (12)
1. a preparation method for touch panel, the method comprises the following steps:
There is provided a dielectric base, surface definition one touch area of this dielectric base and a routing region;
An adhesive-layer is formed on the described surface of described dielectric base;
Form a carbon nanotube layer on described adhesive-layer surface, and solidify described adhesive-layer;
At described carbon nanotube layer table surface forming electrode and conducting wire, the carbon nano-tube layer segment being positioned at routing region is covered by this conducting wire, part exposes; And
Remove the carbon nanotube layer in routing region exposure and the carbon nanotube layer covered by this conducting wire is retained between this conducting wire and described adhesive-layer.
2. the preparation method of touch panel as claimed in claim 1, is characterized in that, the method formation that described carbon nanotube layer passes through print process, sedimentation or directly lays.
3. the preparation method of touch panel as claimed in claim 1, it is characterized in that, after the described surface at adhesive-layer forms the step of a carbon nanotube layer, this carbon nanotube layer partial wetting is in adhesive-layer.
4. the preparation method of touch panel as claimed in claim 1, it is characterized in that, the material of described adhesive-layer is UV glue, and the method for described solidification adhesive-layer is uv irradiation method.
5. the preparation method of touch panel as claimed in claim 1, is characterized in that, described electrode and conducting wire are by the preparation of silk screen print method, chemical vapour deposition technique or magnetron sputtering method.
6. the preparation method of touch panel as claimed in claim 1, it is characterized in that, after the step of described solidification adhesive-layer, the carbon nanotube portion in described carbon nanotube layer infiltrates in adhesive-layer, and part is exposed to outside adhesive-layer.
7. the preparation method of touch panel as claimed in claim 6, it is characterized in that, described electrode is formed at the surface that carbon nanotube layer is positioned at touch area, and conducting wire is formed at the surface that carbon nanotube layer is positioned at routing region.
8. the preparation method of touch panel as claimed in claim 7, it is characterized in that, the part carbon nanotube layer that described electrode and this electrode cover forms composite structure, and the part carbon nanotube layer that described conducting wire and this conducting wire cover forms composite structure.
9. the preparation method of touch panel as claimed in claim 1, it is characterized in that, described electrode and conducting wire are integrally formed by Screen-printed conductive slurry.
10. the preparation method of touch panel as claimed in claim 9, is characterized in that, described electrocondution slurry can infiltrate formation composite structure mutually with the part carbon nanotube layer covered.
The preparation method of 11. touch panels as claimed in claim 1, is characterized in that, described removal be positioned at that routing region exposes the method for carbon nanotube layer be laser ablation method, particle beams etching method or E-beam lithography.
The preparation method of 12. touch panels as claimed in claim 11, is characterized in that, described conducting wire as remove be positioned at that routing region exposes carbon nanotube layer time required contraposition mask.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110154072.8A CN102819339B (en) | 2011-06-09 | 2011-06-09 | Production method of touch panels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110154072.8A CN102819339B (en) | 2011-06-09 | 2011-06-09 | Production method of touch panels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102819339A CN102819339A (en) | 2012-12-12 |
| CN102819339B true CN102819339B (en) | 2015-06-17 |
Family
ID=47303477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110154072.8A Expired - Fee Related CN102819339B (en) | 2011-06-09 | 2011-06-09 | Production method of touch panels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102819339B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923414A (en) * | 2010-08-13 | 2010-12-22 | 友达光电股份有限公司 | Electronic device and manufacturing method thereof |
| TW201102701A (en) * | 2009-07-15 | 2011-01-16 | Innolux Display Corp | Conductive plate and touch plate applied by the same |
| TW201103042A (en) * | 2009-07-15 | 2011-01-16 | Innolux Display Corp | A conductive plate and method for making the same |
-
2011
- 2011-06-09 CN CN201110154072.8A patent/CN102819339B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201102701A (en) * | 2009-07-15 | 2011-01-16 | Innolux Display Corp | Conductive plate and touch plate applied by the same |
| TW201103042A (en) * | 2009-07-15 | 2011-01-16 | Innolux Display Corp | A conductive plate and method for making the same |
| CN101923414A (en) * | 2010-08-13 | 2010-12-22 | 友达光电股份有限公司 | Electronic device and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102819339A (en) | 2012-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101470559B (en) | Touch screen and display equipment | |
| TWI512555B (en) | Touch panel and method for making the same | |
| CN102819341B (en) | The preparation method of touch panel | |
| TWI453634B (en) | Method for making touch panel | |
| CN102819338A (en) | Production method of touch panel | |
| TW201250967A (en) | Touch panel and touch screen | |
| CN102645989B (en) | The preparation method of touch panel | |
| CN102819337B (en) | Production method of touch panels | |
| TWI428667B (en) | Method for making touch panel | |
| CN102819336A (en) | Touch screen panel | |
| TWI425562B (en) | Method for making touch panel | |
| TWI447978B (en) | Method for making touch panel | |
| CN102479015B (en) | Capacitive touch screen | |
| CN102819335A (en) | Production method of touch panels | |
| CN104423746A (en) | Touch screen preparation method | |
| CN102819366A (en) | Touch screen panel and touch screen | |
| CN102819340B (en) | The preparation method of touch panel | |
| CN104423743B (en) | The preparation method of touch-screen | |
| CN104423744A (en) | Touch screen and preparation method thereof | |
| TWI506751B (en) | Touch panel | |
| CN104423668A (en) | Touch screen preparation method | |
| CN102819339B (en) | Production method of touch panels | |
| TW201250800A (en) | Touch panel | |
| TWI447481B (en) | Method for making touch panel | |
| TWI442277B (en) | Manufacture method for a touch plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210423 Address after: Electronic Information Industrial Park, Gui'an New District, Guiyang City, Guizhou Province Patentee after: Guizhou Funa Yuanchuang Technology Co.,Ltd. Patentee after: Shih Hua Technology Ltd. Address before: 300457 Tianjin Binhai New Area Haiyun Tianjin economic and Technological Development Zone No. 80 Building No. 15 Street Patentee before: TIANJIN FUNAYUANCHUANG TECHNOLOGY Co.,Ltd. Patentee before: Shih Hua Technology Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 |