CN103455184A - Touch panel - Google Patents
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- CN103455184A CN103455184A CN2012101724035A CN201210172403A CN103455184A CN 103455184 A CN103455184 A CN 103455184A CN 2012101724035 A CN2012101724035 A CN 2012101724035A CN 201210172403 A CN201210172403 A CN 201210172403A CN 103455184 A CN103455184 A CN 103455184A
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Abstract
The invention relates to a touch panel. The touch panel comprises a first electrode plate and a second electrode plate. The first electrode plate comprises a first substrate and a first conducting layer arranged on the first substrate. The second electrode plate comprises a second substrate and a second conducting layer arranged on the second substrate, and the second conducting layer and the first conducting layer are oppositely arranged at intervals. The first conducting layer is a carbon nano tube layer, the carbon nano tube layer comprises a plurality of carbon nano tubes, the plurality of carbon nano tubes extend along the same direction, and the second conducting layer is a metal layer.
Description
Technical field
The present invention relates to a kind of contact panel, relate in particular to a kind of contact panel based on carbon nano-tube.
Background technology
In recent years, touching technique being used widely in the electronic equipments such as computer, mobile phone, household electrical appliances, toy.Because the electronic equipment that adopts touching technique is easy to use, so touching technique more and more becomes preferred use-pattern in people's life.
Touch panel is distinguished from light transmission, mainly can be divided into the penetration touch panel that can make light transmission and the non-penetrating type touch panel that can not make light transmission.Wherein, non-penetrating type touch panel of the prior art adopts printed circuit board (PCB) (pcb board) to reach the purpose that can touch usually.Yet, for fields such as some small household appliances, toy and keyboards, adopt pcb board to build touch panel, cost is higher.In addition, large-sized pcb board is more thick and heavy, so that traditional non-penetrating type touch panel is not allowed to be easy to do is larger, is not easy in large size.
Summary of the invention
In view of this, necessaryly provide a kind of and can be applied in the non-penetrating type touch panel that does not need the touch of printing opacity field, the cost compare of this touch panel is low, and is easy in large size.
A kind of touch panel, it comprises: one first battery lead plate and one second battery lead plate.This first battery lead plate comprises that a first substrate and is arranged at the first conductive layer of this first substrate.This second battery lead plate comprises that a second substrate and is arranged at the second conductive layer of this second substrate, and this second conductive layer is relative and spaced with described the first conductive layer.Wherein, this first conductive layer is a carbon nanotube layer, and this carbon nanotube layer comprises a plurality of carbon nano-tube, and the plurality of carbon nano-tube is extended in the same direction; This second conductive layer is a metal level.
A kind of touch panel, it comprises: one first battery lead plate and one second battery lead plate.This first battery lead plate comprises a first substrate and one first conductive layer.This second battery lead plate comprises a second substrate and one second conductive layer, and this second conductive layer is relative and spaced with described the first conductive layer.Wherein, described the first conductive layer is a carbon nanotube layer, and this carbon nanotube layer comprises a plurality of carbon nano-tube, axially the extending along a first direction of a plurality of carbon nano-tube, described the second conductive layer comprises a plurality of parallel and spaced bonding jumpers, and the plurality of bonding jumper extends along a second direction.
Compared with prior art, touch panel provided by the invention has the following advantages: the conductive layer during described touch panel comprises is comprised of metal material, because metal material is the non-light transmittance material, so this touch panel can be applied in the non-penetrating type touch panel that does not need the touch of printing opacity field.In addition, this touch panel just can be realized touch controllable function by carbon nanotube layer and metal material layer are set, and the thickness of carbon nanotube layer and metal level and size ratio be easier to control, so the cost compare of this touch panel is low, and is easy in large size.
The accompanying drawing explanation
Fig. 1 is the perspective exploded view of the touch panel that provides of first embodiment of the invention.
Fig. 2 is the diagrammatic cross-section of the touch panel that provides of first embodiment of the invention.
Fig. 3 is the stereoscan photograph of the carbon nano-tube film of first embodiment of the invention employing.
Fig. 4 is the structural representation of the touch panel that provides of second embodiment of the invention.
Fig. 5 is the first battery lead plate in the touch panel that provides of second embodiment of the invention and the vertical view of the second battery lead plate.
Fig. 6 is the structural representation of the touch panel that provides of third embodiment of the invention.
Fig. 7 is the vertical view of the first battery lead plate in the touch panel that provides of third embodiment of the invention.
Fig. 8 is the structural representation of the touch panel that provides of fourth embodiment of the invention.
Fig. 9 is the vertical view of the second battery lead plate in the touch panel that provides of fourth embodiment of the invention.
The main element symbol description
| |
10；20；30；40 |
| The first |
12；22；32 |
| |
120 |
| The first |
122 |
| The |
124；224 |
| The |
126；326 |
| The second |
14；24；44 |
| |
140 |
| The second |
142；442 |
| Third electrode | 144；244；444 |
| The 4th electrode | 146；446 |
| The point- |
16 |
| |
18 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1 and Fig. 2, first embodiment of the invention provides a kind of touch panel 10, and this touch panel 10 is the non-penetrating type touch panel.This touch panel 10 comprises one first battery lead plate 12, one second battery lead plate 14, a plurality of point-like spacer 16 and an Insulating frame 18.Wherein, described the first battery lead plate 12 and the second battery lead plate 14 relative spacing settings.Described a plurality of point-like spacer 16 and described Insulating frame 18 are arranged between described the first battery lead plate 12 and the second battery lead plate 14, and this Insulating frame 18 is arranged at the periphery of described the first battery lead plate 12 and the second battery lead plate 14.
Described the first battery lead plate 12 comprises first substrate 120, one first conductive layers 122, the first electrode 124 and second electrode 126.This first substrate 120 is planar structure, and it has a first surface, and this first conductive layer 122, the first electrode 124 and the second electrode 126 are disposed on the first surface of first substrate 120.This first electrode 124 and the second electrode 126 are disposed on the two ends of the first conductive layer 122 and are electrically connected to the first conductive layer 122 along a first direction X.
The distance at described the second battery lead plate 14 and the first battery lead plate 12 intervals is 2 ~ 10 microns.This second battery lead plate 14 comprises second substrate 140, one second conductive layers 142, third electrode 144 and the 4th electrode 146.This second substrate 140 is planar structure, it has a second surface, this second conductive layer 142, third electrode 144 and the 4th electrode 146 are disposed on the second surface of second substrate 140, and this third electrode 144 and the 4th electrode 146 are disposed on the two ends of the second conductive layer 142 and are electrically connected to the second conductive layer 142 along a second direction Y, and this second conductive layer 142, third electrode 144 and the 4th electrode 146 are oppositely arranged with described the first conductive layer 122, the first electrode 124 and the second electrode 126 respectively.In the present embodiment, first direction X, perpendicular to second direction Y, is positioned at the first electrode 124 and the second electrode 126 on the first battery lead plate 12 and is positioned at third electrode 144 and the 4th electrode 146 quadrature settings on the second battery lead plate 14.Preferably, this second battery lead plate 14 arranges near the user.Be appreciated that described first direction X and second direction Y as long as can intersect.
Described first substrate 120 and second substrate 140 are a film or thin plate.Preferably, this first substrate 120 and second substrate 140 have certain pliability.This first substrate 120 and second substrate 140 can be transparent material, can be also opaque materials.In the present embodiment, this first substrate 120 is polyethylene terephthalate (PET) with the material of second substrate 140, and this first substrate 120 is 0.5 millimeter with the thickness of second substrate 140.Be appreciated that the material and the thickness that form described first substrate 120 and second substrate 140 are not limited to material and the thickness that the present embodiment is enumerated, as long as can make first substrate 120 play the effect of support.As, the material of this first substrate 120 and second substrate 140 can be hard material or flexible material.Particularly, the material of this first substrate 120 and second substrate 140 can also comprise glass, quartzy, adamas, printed-wiring board (PWB) (PWB plate), polycarbonate (PC), polymethylmethacrylate (PMMA), polyethersulfone (PES), cellulose esters, Polyvinylchloride (PVC), benzocyclobutene (BCB), acryl resin, acrylonitrile-butadiene-styrene copolymer (ABS), polyethylene terephthalate (PET), polycarbonate/acrylonitrile-butadiene-phenylethene copolymer blend (PC/ABS), polycarbonate/polybutylene terephthalate blend (PC/PBT), polycarbonate/polyethylene terephthalate blend (PC/PET), the materials such as polycarbonate/polymethylmethacrylate blend (PC/PMMA) or polyamide (PA).The thickness range of this first substrate 120 and second substrate 140 is as long as between 0.1 millimeter ~ 1 centimetre.Separately, the material of first substrate 120 and thickness can be not identical with material and the thickness of second substrate 140.
In the present embodiment, the material of this first electrode 124, the second electrode 126, third electrode 144 and the 4th electrode 146 is conductive silver glue, and forms by the mode of printing.Wherein, the material of this first electrode 124, the second electrode 126, third electrode 144 and the 4th electrode 146 is not limited to conductive silver glue, it can also be metal, carbon nano-tube film or other conductive materials, as long as guarantee that this first electrode 124, the second electrode 126, third electrode 144 and the 4th electrode 146 can conduct electricity.Separately, when described touch panel 10 is flexible touch panel, above-mentioned electrode also should have certain toughness and easy bending degree.
Described the first conductive layer 122 is transparency conducting layer, and this first conductive layer 122 is a carbon nanotube layer.This carbon nanotube layer is a self supporting structure, so this carbon nanotube layer does not need large-area carrier supported, and it is can be on the whole unsettled and keep self membranaceous state as long as relative both sides provide support power, when soon this carbon nano-tube is placed on two spaced supporters of (or being fixed in), the carbon nanotube layer between two supporters can the membranaceous state of unsettled maintenance self.So this first conductive layer 122 can be by forming on the surface that this carbon nanotube layer is laid immediately under vacant state to described first substrate 120.Described carbon nanotube layer comprises a plurality of carbon nano-tube, and the surface that axially is basically parallel to this carbon nanotube layer of the most of carbon nano-tube in the plurality of carbon nano-tube.In the present embodiment, this first conductive layer 122 is comprised of carbon nano-tube.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 ~ 200 micron; Preferably, the thickness of this carbon nanotube layer is 100 nanometers ~ 200 nanometers.Because the even carbon nanotube in described carbon nanotube layer distributes and has good pliability, make this carbon nanotube layer there is good pliability, can become arbitrary shape and be difficult for breaking by bending fold.
Carbon nano-tube in described carbon nanotube layer comprises one or more in Single Walled Carbon Nanotube, double-walled carbon nano-tube and multi-walled carbon nano-tubes.The diameter of described Single Walled Carbon Nanotube is 0.5 nanometer ~ 50 nanometers, and the diameter of double-walled carbon nano-tube is 1.0 nanometers ~ 50 nanometers, and the diameter of multi-walled carbon nano-tubes is 1.5 nanometers ~ 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.
Carbon nano-tube ordered arrangement in described carbon nanotube layer.So-called ordered arrangement refers to that the orientation of carbon nano-tube is regular.Particularly, the carbon nano-tube in this carbon nanotube layer is arranged of preferred orient substantially in the same direction.So-called " preferred orientation " refers to that the most of carbon nano-tube in described carbon nanotube layer have larger orientation probability in one direction; That is, the most of carbon nano-tube in this carbon nanotube layer axially extends substantially in the same direction.So this carbon nanotube layer is the conduction anisotropic membrane, that is, the ratio of the resistivity of the resistivity of this carbon nanotube layer on the carbon nano-tube bearing of trend and other either directions is less than or equal to 1:2.Be appreciated that and can make by the method for etching or this carbon nanotube layer of laser treatment this carbon nanotube layer for the conduction anisotropic membrane.
Described carbon nanotube layer comprises at least one carbon nano-tube film.When described carbon nanotube layer comprises a plurality of 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 this carbon nano-tube film is comprised 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 whole bearing of trend of most of carbon nano-tube substantially in the same direction.And the whole 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 are to join end to end by Van der Waals force.In most of carbon nano-tube of extending substantially in the same direction in described carbon nano-tube film particularly,, each carbon nano-tube joins end to end by Van der Waals force with carbon nano-tube adjacent on bearing of trend.Certainly, have the carbon nano-tube of minority random alignment in described carbon nano-tube film, these carbon nano-tube can not arranged and form obviously impact the overall orientation of most of carbon nano-tube in carbon nano-tube film.
Particularly, most carbon nano-tube of extending substantially in the same direction in described carbon nano-tube film, and nisi linearity, bending that can be suitable; Perhaps not fully according to arranging 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 most carbon nano-tube of extending substantially in the same direction of carbon nano-tube film and may have the part contact.
Particularly, described carbon nano-tube film comprise a plurality of continuously and the carbon nano-tube fragment aligned.The plurality of carbon nano-tube fragment joins end to end by Van der Waals force.Each carbon nano-tube fragment comprises a plurality of carbon nano-tube that are 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 length, thickness, homogeneity and shape arbitrarily.Carbon nano-tube in this carbon nano-tube film is arranged of preferred orient in the same direction.
Described carbon nano-tube film can be by directly pulling acquisition from carbon nano pipe array.Be appreciated that can be by a plurality of carbon nano-tube films the parallel and coplanar laying of gapless or/and stacked laying.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 a plurality of stacked settings, the orientation of the carbon nano-tube in adjacent carbon nano-tube film is basically identical.Be appreciated that this carbon nanotube layer has a desirable penetrability, the visible light transmissivity of single-layer carbon nano-tube film is greater than 85%, and in this carbon nanotube layer, the number of plies of carbon nano-tube film is not limit, as long as can have desirable penetrability.
Because the carbon nano-tube in this carbon nano-tube film is extended substantially in the same direction, and the bearing of trend of most of carbon nano-tube is basically parallel to the surface of this carbon nano-tube film, thereby make the resistivity of this carbon nano-tube film on its carbon nano-tube bearing of trend be less than the resistivity on other directions.So this carbon nano-tube film is the conduction anisotropic membrane.
In the present embodiment, described the first conductive layer 122 is comprised of the single-layer carbon nano-tube film, and the visible light transmissivity of this carbon nano-tube film is approximately 90%.Axially substantially extending along first direction X of carbon nano-tube in this first conductive layer 122, so the resistivity of this first conductive layer 122 on first direction X is less than the resistivity on second direction Y.In addition, described the first electrode 124 and the second electrode 126 are arranged along a direction X on this first conductive layer 122, that is, this first electrode 124 is electrically connected to the extending axially on direction of carbon nano-tube of the second electrode 126 in this first conductive layer 122.This first conductive layer 122 is fixed on described first substrate 120 by optical cement.Be appreciated that, because the specific surface area of carbon nano-tube itself is very large, so this carbon nanotube layer itself also has stronger viscosity, so this first conductive layer 122 also can directly stick on described first substrate 120.
Described the second conductive layer 142 is lighttight conductive layer, and this second conductive layer 142 is not transparency conducting layer, is nontransparent material.So the transparency conducting layer that this second conductive layer 142 can be high without cost compares such as tin indium oxides, but adopt the relatively low metal material of cost, as, the metal material of the non-printing opacities such as aluminium, silver, copper, iron, cobalt, nickel and alloy thereof.This second conductive layer 142 is the non-light transmittance conductive layer.In the present embodiment, this second conductive layer 142 is made by lighttight conductive silver paste, and the thickness of this silver layer is approximately 5 microns.Wherein, the thickness of this silver layer is not limited to 5 microns, and its thickness also can be between 4 microns～25 microns.The material and the thickness that are appreciated that this second conductive layer 142 are not limited to described in the present embodiment, and the material of this second conductive layer 142 mainly comprises that metal material gets final product.The thickness of this second conductive layer 142 is not limit, as long as make this second conductive layer 142 light tight, as, the thickness of this second conductive layer 142 can be greater than 10 nanometers, as 50 nanometers, 100 nanometers, 250 nanometers, 500 nanometers, 1 micron, 5 microns, 10 microns, 20 microns, 100 microns etc.Preferably, the thickness of this second conductive layer 142 is more than or equal to 50 nanometers, and is less than or equal to 30 microns.This second conductive layer 142 is less than or equal to 50% for the visible light transmittance rate that lighttight conductive layer mainly refers to this second conductive layer 142.Because this second conductive layer 142 is lighttight conductive layer, so this touch panel 10 can be applied in does not need the touch of printing opacity field, as keyboard, remote controller, handwriting pad etc.This second conductive layer 142 mainly is formed on second substrate 140 by methods such as spraying, evaporation, sputter or printings.
Described a plurality of point-like spacer 16 is intervally installed.In the present embodiment, the plurality of point-like spacer 16 is arranged on the second conductive layer 142 of the second battery lead plate 14.Be appreciated that the plurality of point-like spacer 16 also can be arranged on the first conductive layer 122 of the first battery lead plate 12.The edge of the edge of described the first battery lead plate 12 and the second battery lead plate 14 connects by described Insulating frame 18.Described a plurality of point-like spacer 16 all can adopt insulating resin or other insulating material to make with Insulating frame 18.Described a plurality of point-like spacer 16 can make the first battery lead plate 12 and the second battery lead plate 14 electrical isolations with Insulating frame 18.Be appreciated that when touch panel 10 sizes hour, the plurality of point-like spacer 16 be selectable structure, needs only this Insulating frame 18 and can guarantee described the first battery lead plate 12 and the second battery lead plate 14 electrical isolations.
During use, the first battery lead plate 12 and the second battery lead plate 14 are applied respectively to a voltage.Touch the first battery lead plate 12 or the second battery lead plate 14, under the effect of touch pressure, the substrate generation deformation on the battery lead plate at place, touch point, make the first conductive layer 122 of described the first battery lead plate 12 contact conducting with the second conductive layer 142 of the second battery lead plate 14.Then, by measuring respectively change in voltage and second conductive layer 142 change in voltage on directions X of the first conductive layer 122 on Y-direction, carry out the location, touch point.Further can realize touch controllable function.So this touch panel 10 just can be realized touch controllable function by the carbon nanotube layer of described the first conductive layer 122 and the metal conducting layer of the second conductive layer 142, can not use traditional pcb board to realize touch controllable function.
Be appreciated that described the first electrode 124, the second electrode 126, third electrode 144 and the 4th electrode 146 can be arranged on same battery lead plate.As, this first electrode 124, the second electrode 126 can be arranged at described the second battery lead plate 14 together with described third electrode 144 and the 4th electrode 146.And this first electrode 124 and the second electrode 126 are arranged at intervals at the surface of described the second conductive layer 142 and are electrically connected to this second conductive layer 142 along first direction X.
Refer to Fig. 4, second embodiment of the invention provides a touch panel 20, this touch panel 20 is the multipoint resistance type touch panel, the structure substrate of the single-point resistor type touch panel 10 that the structure of this touch panel 20 provides with the first embodiment is identical, and difference is: the first battery lead plate 22 in the present embodiment and the distribution of electrodes on the second battery lead plate 24 are different from the first battery lead plate 12 and the distribution of electrodes on the second battery lead plate 14 in the first embodiment.
Particularly, refer to Fig. 5, described the first battery lead plate 22 comprises a plurality of the first electrodes 224 and second electrode 126, and this first conductive layer 122 is for having the anisotropic carbon nanotube layer of conduction.The resistivity of this first conductive layer 122 on first direction X is less than the resistivity on second direction Y.The plurality of the first electrode 224 and this second electrode 126 are electrically connected to described the first conductive layer 122 respectively.The plurality of the first electrode 224 is disposed on the same side of this first conductive layer 122 along second direction Y, and is oppositely arranged with described the second electrode 126.That is to say, the plurality of the first electrode 224 is arranged on this second electrode 126 both sides that this first conductive layer 122 is basically perpendicular to first direction X.In the present embodiment, the resistivity of this first conductive layer 122 on second direction Y is more than or equal to 10 with the ratio along the resistivity of first direction directions X.Because described the first conductive layer 122 has conduction anisotropy, the plurality of the first electrode 224 is divided into this first conductive layer 122 conductive channel of a plurality of correspondences.Described the second electrode 126 is a strip electrode.
The second battery lead plate 24 comprises a third electrode 244, and this third electrode 244 is arranged on the surrounding of described the second conductive layer 142 continuously, and is electrically connected to this second conductive layer 142.This second conductive layer 142 is a continuous metal conducting layer.It should be noted that, the electrode that is arranged on this second battery lead plate 24 only has one, and is above-mentioned third electrode 244.
Separately, the material of described the first electrode 224 and third electrode 244 is identical with the material of the first electrode 124 in the first embodiment and third electrode 144 respectively.Other structures of the touch panel 20 that this second embodiment provides and material are identical with other structures and the material of the touch panel 10 that described the first embodiment provides.
Wherein, the type of drive of this touch panel 20 is: the general ground connection of described third electrode 144, the voltage of this second conductive layer 142 is 0 volt.Described the second electrode 126 generally connects a galvanic current and presses, and as 10 volts, the voltage of this first conductive layer 122 is 10 volts.Described a plurality of the first electrode 124 is used for detecting the change in voltage of described the first conductive layer 122 correspondence positions, for touching location, gives information.
Refer to Fig. 6, third embodiment of the invention provides a touch panel 30, this touch panel 30 is the multipoint resistance type touch panel, the structure of the touch panel 20 that the structure of this touch panel 30 and the second embodiment provide is basic identical, and difference is: the structure of the electrode on the first battery lead plate 32 in the present embodiment is different from the distribution of electrodes on the first battery lead plate 22 in the second embodiment.Particularly, refer to Fig. 7, arranging of the second electrode 326 in this first battery lead plate 32 is different from arranging of the second electrode 126 in the first battery lead plate 22 in the second embodiment, and other structures of this first battery lead plate 32 are identical with other structures of the first battery lead plate 22 in the second embodiment.Further, a plurality of the second electrodes 326 in this first battery lead plate 32 are spaced along second direction.The plurality of the second electrode 326 and described a plurality of the first electrodes 224 are corresponding and be oppositely arranged one by one.
Wherein, the type of drive of this touch panel 30 is: described the first electrode 224 and the second electrode 326 are both as the voltage input electrode, also as detecting the Voltage-output electrode.When this second electrode 326 connects a stable DC voltage as the voltage input electrode, this first electrode 224 is as detecting the Voltage-output electrode; When this first electrode 224 connects a stable DC voltage as the voltage input electrode, this second electrode 326 is as detecting the Voltage-output electrode.That is, this first electrode 224 and the second electrode 326 adopt the mode of I/O in turn to be driven, and can increase the positioning precision of this touch panel 30.
The structure that is appreciated that the second battery lead plate 14 in the touch panel 10 that the structure of the second battery lead plate 24 in the touch panel 30 that touch panel 20 that above-mentioned the second embodiment provides and embodiment provide also can provide with the first embodiment is identical.That is, the distribution of electrodes on described the second battery lead plate 24 is not limited to above-mentioned situation about enumerating, and this second battery lead plate 24 can also comprise two along described second direction Y interval and the electrode be oppositely arranged.
Refer to Fig. 8, fourth embodiment of the invention provides a touch panel 40, this touch panel 40 is the multipoint resistance type touch panel, the structure of the touch panel 30 that the structure of this touch panel 40 and the 3rd embodiment provide is basic identical, difference is: refer to Fig. 9, this touch panel 40 comprises one second battery lead plate 44, and this second battery lead plate 44 comprises a second substrate 140, one second conductive layer 442, a plurality of third electrode 444 and a plurality of the 4th electrode 446.This second conductive layer 442 comprises a plurality of bonding jumpers 443, and the plurality of bonding jumper 443 along described first direction X side by side and be disposed on the surface of described second substrate 140.The plurality of bonding jumper 443 extends along second direction Y respectively, and the bearing of trend of the plurality of bonding jumper 443 is perpendicular to the direction that extends axially of the carbon nano-tube in described the first conductive layer 122.The plurality of third electrode 444 is relative with described a plurality of the 4th electrodes 446 and be disposed on the both sides of this second conductive layer 442 along second direction Y.The plurality of third electrode 444 and a plurality of the 4th electrode 446 are all spaced along first direction X.The plurality of third electrode 444 is electrically connected to described a plurality of the 4th electrodes 446 by the plurality of bonding jumper 443.Wherein, the plurality of third electrode 444, a plurality of bonding jumper 443 and a plurality of the 4th electrode 446 be corresponding the setting one by one, and is electrically connected to respectively.The material of the plurality of bonding jumper 443 is identical with the material of the second conductive layer 142 in the first embodiment.The plurality of bonding jumper 443 can first adopt the methods such as evaporation, sputter to form a continuous conductive layer on second substrate 140, and then adopts the lithographic technique conductive layer continuous to this carry out patterned process and form.In addition, this second conductive layer 442 can obstructed over etching technology patterning, and realizes patterning by the bonding jumper 443 that the modes such as printing, spraying form a plurality of intervals on second substrate 140.Wherein, to have can be intaglio printing, serigraphy, spraying printing, letterpress or nano impression etc. to the method for printing.So the preparation method of this second conductive layer 442 is fairly simple.
Wherein, the type of drive of this touch panel 40 is: when described third electrode 444 and the 4th electrode 446 simultaneously during ground connection, described the first electrode 224 and the second electrode 326 alternately connect high voltage, and determine the horizontal ordinate of touch point by the change in voltage of measuring opposite side the first electrode 224, the second electrode 326.When described the first electrode 224 and the second electrode 326, simultaneously during ground connection, described third electrode 444 and the 4th electrode 446 alternately connect high voltage, and determine the ordinate of touch point by the change in voltage of measuring relative third electrode 444 and the 4th electrode 446.
The patterning that is appreciated that this second conductive layer 442 is not limited to above-mentioned bullion bar 443, and the pattern of this second conductive layer 442 can be also the shapes such as rhombus, as long as this second conductive layer 442 is conduction anisotropy layer.Separately, a third electrode 444 or the 4th electrode 446 can be electrically connected to at least two bonding jumpers 443.Can say, the quantity of described third electrode 444 and the 4th electrode 446 is not limit yet, as, the quantity of third electrode 444 and the 4th electrode 446 can be one.Therefore, this second battery lead plate 44 comprises at least one third electrode 444 and at least one the 4th electrode 446, and this at least one third electrode 444 and at least one the 4th electrode 446 are electrically connected to described a plurality of bonding jumpers 443.In addition, the first battery lead plate 32 in this touch panel 40 also can substitute with the first battery lead plate 22 in the second embodiment.
Touch panel that the embodiment of the present invention provides and preparation method thereof has the following advantages: the first conductive layer in described touch panel is carbon nanotube layer, the second conductive layer is lighttight metal level, so, this touch panel can be applied to does not need the touch of printing opacity field, as keyboard, remote controller and handwriting pad.In addition, the size of described carbon nanotube layer and metal level ratio is easier to control, and Thickness Ratio is thinner, and this touch panel avoids using traditional pcb board, so this touch panel ratio is easier in large size, cost compare is low.In addition, described carbon nanotube layer, for the conduction anisotropic membrane, does not need just can realize conducting electricity anisotropy through patterned process, in addition, described the second conductive layer can adopt the modes such as printing, spraying to form, and can avoid adopting high temperature process to prepare this second conductive layer.Especially, the time, the modes such as this second conductive layer employing printing can directly realize patterning, form the conduction anisotropic structures, do not need to adopt lithographic technique.Simultaneously, described carbon nanotube layer is the conduction anisotropic membrane, do not need just can realize conducting electricity anisotropy through patterned process, so the multi-point touching panel that the invention process provides can omit the step of patterned conductive layer in preparation process, so the preparation method of this touch panel is fairly simple, and then make cost compare low.Because carbon nanotube layer and metal level have pliability preferably, so, when the first substrate in this touch panel and second substrate are flexible material, this touch panel also has flexibility.
In addition, those skilled in the art can also do other and change in spirit of the present invention, and the variation that these are done according to spirit of the present invention, all should be included in the present invention's scope required for protection.
Claims (17)
1. a touch panel, it comprises:
One first battery lead plate, this first battery lead plate comprises that a first substrate and is arranged at first conductive layer on this first substrate surface, this first conductive layer is a carbon nanotube layer, and this carbon nanotube layer comprises a plurality of carbon nano-tube, and the plurality of carbon nano-tube is extended in the same direction; And
One second battery lead plate, this second battery lead plate comprises that a second substrate and is arranged at second conductive layer on this second substrate surface, and this second conductive layer is relative and spaced with described the first conductive layer, and this second conductive layer is a metal level.
2. touch panel as claimed in claim 1, is characterized in that, the material of described metal level is aluminium, silver, copper, iron, cobalt or nickel.
3. touch panel as claimed in claim 1, is characterized in that, the thickness of described metal level is greater than 10 nanometers.
4. touch panel as claimed in claim 1, is characterized in that, the thickness of described metal level is more than or equal to 50 nanometers, and be less than or equal to 30 microns.
5. touch panel as claimed in claim 1, it is characterized in that, described carbon nanotube layer comprises at least one carbon nano-tube film, and each carbon nano-tube in most of carbon nano-tube of extending in the same direction in this carbon nano-tube film joins end to end by Van der Waals force with carbon nano-tube adjacent on bearing of trend.
6. touch panel as claimed in claim 1, is characterized in that, described the first battery lead plate comprises the first electrode and the second electrode, and this first electrode and the second electrode are arranged at respectively the dual-side that described the first conductive layer is vertical with described carbon nano-tube bearing of trend.
7. touch panel as claimed in claim 1, is characterized in that, described metal level comprises a plurality of parallel and spaced bonding jumpers, and the bearing of trend of each bonding jumper is perpendicular to the bearing of trend of carbon nano-tube in described the first conductive layer.
8. touch panel as claimed in claim 7, is characterized in that, described the second battery lead plate comprises third electrode and the 4th electrode, and this third electrode and the 4th electrode are arranged at respectively the dual-side that the second conductive layer is vertical with bearing of trend.
9. touch panel as claimed in claim 8, is characterized in that, described third electrode and the corresponding setting one by one of the 4th electrode, and each third electrode and the 4th electrode are electrically connected to a plurality of bonding jumpers respectively.
10. touch panel as claimed in claim 1, it is characterized in that, described the first battery lead plate comprises a plurality of the first electrodes and a plurality of the second electrode, and the plurality of the first electrode and a plurality of the second electrode are arranged at respectively the dual-side that described the first conductive layer is vertical with described carbon nano-tube bearing of trend; Described the second battery lead plate comprises a third electrode, and this third electrode is arranged at the surrounding of described the second conductive layer, and is electrically connected to this second conductive layer.
11. touch panel as claimed in claim 1, is characterized in that, described carbon nanotube layer is a self supporting structure, and the surface that this carbon nanotube layer directly is layed in described first substrate forms the first conductive layer.
12. touch panel as claimed in claim 1, is characterized in that, the surface that the mode of described metal level by evaporation, sputter, spraying or printing is formed on described second substrate forms the second conductive layer.
13. a touch panel, it comprises:
One first battery lead plate, this first battery lead plate comprises a first substrate and one first conductive layer; And
One second battery lead plate, this second battery lead plate comprises a second substrate and one second conductive layer, and this second conductive layer is relative and spaced with described the first conductive layer, it is characterized in that,
Described the first conductive layer is a carbon nanotube layer, this carbon nanotube layer comprises a plurality of carbon nano-tube, axially extending along a first direction of a plurality of carbon nano-tube, described the second conductive layer comprises a plurality of parallel and spaced bonding jumpers, the plurality of bonding jumper extends along a second direction.
14. touch panel as claimed in claim 13, it is characterized in that, described first substrate or second substrate are printed-wiring board (PWB), polyethylene terephthalate, polyethersulfone, cellulose esters, acryl resin, acrylonitrile-butadiene-styrene copolymer, polyethylene terephthalate, polycarbonate/acrylonitrile-butadiene-phenylethene copolymer blend, polycarbonate/polybutylene terephthalate blend, polycarbonate/polyethylene terephthalate blend, polycarbonate/polymethylmethacrylate blend or polyamide.
15. touch panel as claimed in claim 13, is characterized in that, described first direction is vertical with described second direction.
16. touch panel as claimed in claim 13, is characterized in that, the thickness of described bonding jumper is greater than 10 nanometers.
17. touch panel as claimed in claim 13, is characterized in that, described bonding jumper is formed on the surface of described second substrate by the mode of spraying or printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101724035A CN103455184A (en) | 2012-05-30 | 2012-05-30 | Touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101724035A CN103455184A (en) | 2012-05-30 | 2012-05-30 | Touch panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103455184A true CN103455184A (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101724035A Pending CN103455184A (en) | 2012-05-30 | 2012-05-30 | Touch panel |
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| Country | Link |
|---|---|
| CN (1) | CN103455184A (en) |
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|---|---|---|---|---|
| US20100093247A1 (en) * | 2008-07-04 | 2010-04-15 | Tsinghua University | Method for fabricating touch panel |
| CN101989136A (en) * | 2009-08-07 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Touch screen and display device |
| CN102033669A (en) * | 2009-09-24 | 2011-04-27 | 群康科技(深圳)有限公司 | Capacitance-type touch panel |
| CN102043299A (en) * | 2009-10-16 | 2011-05-04 | 群康科技(深圳)有限公司 | Display device and touch display device |
| CN102460352A (en) * | 2009-06-19 | 2012-05-16 | 苹果公司 | Transparent conductor thin film formation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100093247A1 (en) * | 2008-07-04 | 2010-04-15 | Tsinghua University | Method for fabricating touch panel |
| CN102460352A (en) * | 2009-06-19 | 2012-05-16 | 苹果公司 | Transparent conductor thin film formation |
| CN101989136A (en) * | 2009-08-07 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Touch screen and display device |
| CN102033669A (en) * | 2009-09-24 | 2011-04-27 | 群康科技(深圳)有限公司 | Capacitance-type touch panel |
| CN102043299A (en) * | 2009-10-16 | 2011-05-04 | 群康科技(深圳)有限公司 | Display device and touch display device |
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Application publication date: 20131218 |