CN102478992B - Touch screen - Google Patents
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- CN102478992B CN102478992B CN201010573847.0A CN201010573847A CN102478992B CN 102478992 B CN102478992 B CN 102478992B CN 201010573847 A CN201010573847 A CN 201010573847A CN 102478992 B CN102478992 B CN 102478992B
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Abstract
The invention relates to a touch screen which comprises a substrate, a transparent conducting layer, at least one electrode and at least one conductor, wherein the transparent conducting layer is formed on the surface of the substrate, and at least partial region of the transparent conducting layer is defined as a touch control region; the at least one electrode is arranged at the at least one end of the transparent conducting layer and is electrically connected with the transparent conducting layer; and the at least one conductor is arranged on the periphery of the transparent conducting layer and electrically connects the at least one electrode with an external circuit, the region where the at least one conductor is located is defined as a wiring region, at least one side of the substrate is bent to form a bent part, and at least part of the wiring region is arranged at the bent part of the substrate.
Description
Technical field
The present invention relates to a kind of touch-screen, particularly relate to a kind of touch-screen 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, touch navigation system, integrated computer display and interactive TV, the electronic equipment installing the touch-screen of light transmission at the display surface of LCDs increases gradually.The user of electronic equipment, by touch-screen, carries out visual confirmation to the displaying contents of the LCDs being positioned at the touch-screen back side, while utilize the modes such as finger or pen to press touch-screen to operate.Thus, the various functions of the electronic equipment using this LCDs can be operated.
Described touch-screen according to the difference of its principle of work and transmission medium, can be divided into Four types, is respectively resistance-type, capacitor induction type, infrared-type and surface acoustic wave type usually.Wherein resistive touch screen and capacitive touch screen are widely used because it has high resolving power, high sensitivity and the advantage such as durable.Existing resistive touch screen and capacitive touch screen all comprise glass basis, tin indium oxide (ITO) transparency conducting layer and multiple wire, wherein, described multiple wire is formed in the surface of described glass basis by the mode of serigraphy, and is electrically connected with described ITO transparency conducting layer.At least part of region of described ITO transparency conducting layer is defined as touch area.The region at described multiple wire place is defined as the routing region of this touch-screen, and this routing region can not realize the touch controllable function of touch-screen.
Therefore, there is the routing region that can not realize touch controllable function in the touch surface of this touch-screen.Due to the existence of routing region, think the touch area making this touch-screen have formed objects, the size of this touch-screen is larger, is unfavorable for the development of the miniaturization of the electronic equipment applying this touch-screen.
Summary of the invention
Given this, necessaryly provide a kind of touch-screen, the routing region of this touch-screen has good toughness, and this routing region can bend at least partly thus can make, when ensureing the size of touch area, to make the size of described touch-screen smaller.
A kind of touch-screen comprises matrix; Transparency conducting layer, this transparency conducting layer is formed in a surface of described matrix, and at least part of region of this transparency conducting layer is defined as touch area; At least one electrode, this at least one electrode is arranged at least one end of described transparency conducting layer and is electrically connected with this transparency conducting layer; And at least one wire, this at least one wire is arranged on described transparency conducting layer periphery and is electrically connected with external circuits by least one electrode described, the region at this at least one wire place is defined as routing region, wherein, at least one side edge bending of described matrix forms bending part, and described routing region is arranged at the bending part of this matrix at least partly.
A kind of touch-screen, it comprises: matrix; Transparency conducting layer is formed in a surface of matrix, and wherein, at least part of region of this transparency conducting layer is defined as touch area; At least two electrode gap arrange and are electrically connected with this transparency conducting layer; And at least two conductor spacings arrange and are electrically connected with described at least two electrodes respectively, and these at least two electrodes are electrically connected with external circuits, wherein, the region at these at least two wire places is defined as routing region, at least one side edge bending of described matrix forms bending part, and described routing region is arranged at the bending part of this matrix at least partly.
A kind of touch-screen, it comprises: the first battery lead plate, and this first battery lead plate comprises the first matrix, the first transparency conducting layer, at least one first electrode and at least one first wire, this first transparency conducting layer is arranged at described first matrix, this at least one first electrode is electrically connected with described first transparency conducting layer, this at least one first wire is electrically connected with described at least one first electrode, and is electrically connected with external circuits by this at least one first electrode, and second battery lead plate, this second battery lead plate comprises the second matrix, second transparency conducting layer, at least one second electrode and at least one the second wire, this second transparency conducting layer is arranged at described second matrix, the relative at least partly and interval of this second transparency conducting layer and described first transparency conducting layer is arranged, at least one second electrode described is electrically connected with this second transparency conducting layer, at least one second wire described is electrically connected with at least one second electrode described respectively, and this at least one electrode is electrically connected with external circuits, wherein, the part that described first transparency conducting layer and the second transparency conducting layer are oppositely arranged is touch area, the region at least one first wire described and at least one the second wire place described is defined as routing region.At least one side edge bending of at least one matrix in described first matrix and described second matrix forms bending part, and described routing region is arranged at described bending part at least partly.
A kind of touch-screen, it comprises: matrix, and this matrix has surface; Transparency conducting layer, this transparency conducting layer is formed at the surface of described matrix, and at least part of region of this transparency conducting layer is defined as touch area; And wire, this wire is formed at the surface of described matrix, and the region at this wire place is defined as routing region, and wherein, at least one side edge bending of described matrix forms bending part, and described routing region is arranged at the bending part of this matrix at least partly.
Compared with prior art, the bending part of matrix at least routing region described in setting unit in touch-screen provided by the invention, the area that can not realize the region of touch-control of the touch surface of this touch-screen is reduced, therefore, under the condition of the size of the touch area of the touch surface of this touch-screen of guarantee, the size of this touch-screen can be reduced; Described routing region can coordinate the structure of this touch-screen or the electron device of applying this touch-screen to connect, and be arranged at the bending part of described matrix, thus by this touch-screen applications in the electron device of reduced size, the microminiaturization of the electron device using touch-screen can be conducive to.
Accompanying drawing explanation
Fig. 1 is the perspective view of the touch-screen do not bent that first embodiment of the invention provides.
Fig. 2 is the perspective view of the touch-screen of the bending that first embodiment of the invention provides.
Fig. 3 is the spatial structure decomposing schematic representation of the touch-screen do not bent that second embodiment of the invention provides.
Fig. 4 is the perspective view of the touch-screen do not bent that second embodiment of the invention provides.
Fig. 5 is the perspective view of the touch-screen of the bending that second embodiment of the invention provides.
Fig. 6 is the spatial structure decomposing schematic representation of the touch-screen do not bent that third embodiment of the invention provides.
Fig. 7 is the perspective view of the touch-screen do not bent that third embodiment of the invention provides.
Fig. 8 is the perspective view of the touch-screen of the bending that third embodiment of the invention provides.
Main element symbol description
Touch-screen 10; 20; 30
Matrix 12
Surface 121; 212; 232; 321; 341
Planar section 123; 213; 323; 343
Bending part 125; 215; 325; 345
Transparency conducting layer 14
First electrode 16; 26; 324
Wire 17
First wire 27; 327
Second electrode 18; 28; 344
First matrix 21; 320
First transparency conducting layer 22; 322
Second matrix 23; 340
Second transparency conducting layer 24; 342
Second wire 29; 347
First battery lead plate 32
Second battery lead plate 34
Point-like spacer 36
Insulating frame 38
Embodiment
Below in conjunction with the accompanying drawings and the specific embodiments, touch-screen provided by the invention is described in further detail.
The invention provides touch-screen, this touch-screen comprises matrix, transparency conducting layer, at least one electrode and at least one wire.Wherein, described transparency conducting layer is arranged at the surface of described matrix.At least one electrode described is electrically connected with this transparency conducting layer.At least one wire described is electrically connected one by one with at least one electrode described, and is arranged on the periphery of described transparency conducting layer; This at least one wire is used at least one electrode described to be electrically connected with external circuits.At least part of region of described transparency conducting layer is defined as touch area, and the region at least one wire place described is defined as routing region.At least one side edge bending of described matrix extends to form bending part, and described routing region is arranged at the bending part of described matrix at least partly.According to this touch-screen or the structure of electron device applying this touch-screen, described routing region is arranged at the bending part of described matrix at least partly, the touch surface that effectively can reduce touch-screen can not be used for showing the region of image, can ensure this touch-screen touch surface touch area size condition under, the size of this touch-screen can be reduced; Thus be conducive to the microminiaturization of the electron device using touch-screen.
Described matrix is made up of planar section and described bending part.This bending part is extended by the planar section of this matrix and formed, and be positioned at the periphery of this planar section.Described touch area is arranged on the planar section of described matrix.According to the type of this touch-screen and the difference of embody rule mode, described transparency conducting layer, at least one electrode and at least one wire have following several set-up mode relative to the setting of touch area and routing region: the first, touch area is the planar section of whole matrix, described routing region is only arranged on the bending part of this matrix, now, described transparency conducting layer is arranged at the planar section of whole matrix, and described transparency conducting layer optionally extends to the bending part of matrix.All wires and all electrodes are all arranged on the bending part of matrix.The second, touch area is a part of region of the planar section of whole matrix, another part region of the plane domain of this matrix is provided with at least part of at least one wire described and at least part of at least one electrode described, namely routing region is not only arranged on the bending part of matrix, is also arranged on the planar section of matrix.Now, described transparency conducting layer only can be arranged on the also extensible routing region being arranged on described matrix bending part, touch area of described base plane part.
Be appreciated that the quantity of the matrix in the present invention, transparency conducting layer, electrode and wire is not limited to one, can also be two, the quantity of especially described electrode and wire can also be four or more.When the quantity of described electrode and wire is multiple, when the second situation, a part for each electrode in the plurality of electrode is arranged at the bending part of described matrix, and a part is arranged at the planar section of this matrix; A part for each wire in described multiple wire is arranged at the bending part of described matrix, and a part is arranged at the planar section of this matrix.In addition, when the quantity of described electrode and wire is multiple, when the second situation, at least one electrode in the plurality of electrode is arranged at the bending part of described matrix, and remaining several electrode is arranged at the planar section of described matrix; At least one wire in described multiple wire is arranged at the bending part of described matrix, and remaining several wire is arranged at the planar section of described matrix.
Particularly, described matrix has suitable transparency, pliability, can be bent into arbitrary shape, and mainly plays a part to support.The material of this matrix is flexible material, may be selected to be the polyester materials such as polycarbonate (PC), polymethylmethacrylate (PMMA) or polyethylene terephthalate (PET), or the material such as polyethersulfone (PES), cellulose esters, Polyvinylchloride (PVC), benzocyclobutene (BCB) or acryl resin.Wherein, the material forming described matrix is not limited to the above-mentioned material enumerated.
Described transparency conducting layer comprises carbon nanotube layer.This carbon nanotube layer comprises some carbon nano-tube, and this some carbon nano-tube is arranged of preferred orient in the same direction.Wherein, 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 parallel and the coplanar setting of gapless or stacked setting, and the carbon nano-tube in the plurality of carbon nano-tube film is arranged of preferred orient substantially in the same direction, the orientation of the carbon nano-tube in namely adjacent carbon nano-tube film is basically identical.Because the carbon nano-tube in this carbon nano-tube film has good pliability, make this carbon nano-tube film have good pliability, arbitrary shape can be become and not easily break by bending fold; And still there is good transparency and electric conductivity.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.This carbon nanotube layer has desirable penetrability, and the visible light transmissivity of single-layered carbon nanotube periosteum 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.
Described carbon nano-tube film comprises some carbon nano-tube, and is self supporting structure.Described some carbon nano-tube are for be arranged of preferred orient in the same direction.Described preferred orientation refers to the overall bearing of trend of most of carbon nano-tube in carbon nano-tube film 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 force.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 self-supporting is that 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, by this carbon nano-tube film be placed in (or being fixed on) keep at a certain distance away arrange two supporters on time, the carbon nano-tube film between two supporters can the membranaceous state of unsettled maintenance self.Described self-supporting mainly through exist in carbon nano-tube film continuously through Van der Waals force join end to end extend arrangement carbon nano-tube and realize.
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.From carbon nano pipe array, pull the concrete grammar obtaining described carbon nano-tube film comprise: (a) be a selected carbon nano-tube fragment from described carbon nano pipe array, the present embodiment is preferably the adhesive tape that adopts and have one fixed width or adherent base bar contacts this carbon nano pipe array with the selected carbon nano-tube fragment with one fixed width; B (), by this stretching tool mobile, pulls this selected carbon nano-tube fragment with certain speed, thus the multiple carbon nano-tube fragment of end to end pull-out, and then form continuous print carbon nano-tube film.The plurality of carbon nano-tube makes this carbon nano-tube fragment have one fixed width mutually side by side.When this chosen carbon nano-tube fragment is under a stretching force along pulling while direction departs from the growth substrate of carbon nano pipe array gradually, due to van der Waals interaction, other carbon nano-tube fragment adjacent with this selected carbon nano-tube fragment is one after the other drawn out end to end, thus forms continuous print carbon nano-tube film.
Described carbon nano-tube film has minimum electrical impedance at draw direction, and resists having maximum resistance perpendicular to draw direction, thus possesses electrical impedance anisotropy, namely conducts electricity anisotropy.Structure of described carbon nano-tube film and preparation method thereof refers to disclosed in 26 days Mays in 2010, notification number is the Chinese invention patent of 101239712B.
At least one electrode described is arranged at the surface of described transparency conducting layer or is arranged at the surface of described matrix, and is positioned at the periphery of described touch area.This at least one electrode is relevant with the type of the concrete set-up mode of described transparency conducting layer and the quantity of this electrode and described touch-screen, can determine as required.The material of described electrode is metal, carbon nano-tube, conductive silver paste or other conductive materials, as long as guarantee that this electrode can conduct electricity.But, when at least one electrode described is arranged at the bending part of described matrix, this at least one electrode should ensure its electric conductivity hardly by the impact of the bending of this matrix, or affect smaller, the material as this electrode can be the flexible material that carbon nano-tube or conductive silver paste etc. have electric conductivity.Be appreciated that when described electrode quantity for two or more time, this two or more electrode each other interval and insulation arrange.
At least one wire described all can be arranged at the bending part of described matrix; Also partly can be arranged at the bending part of described matrix, part is arranged at the planar section of this matrix.One end of each wire at least one wire described is electrically connected with an electrode at least one electrode described, and the other end is connected with external circuits, as circuit board.The material of described wire is the material with suitably flexible better electric conductivity, e.g., and conductive silver paste, conducting polymer or carbon nano-tube.Described wire generally adopts the methods such as printing, coating or laying to be formed at the surface of described matrix.Be appreciated that the quantity of described wire is equal with the quantity of described electrode.When the quantity of described wire is at least two, these at least two conductor spacings and insulation are arranged, and one end of each wire electrode corresponding with it is electrically connected; The other end of these at least two wires is pooled to the same side of described transparency conducting layer, and is connected with external circuits.
Described touch-screen can be various forms of touch-screen, as surface capacitance type touch screen, multipoint capacitive touch screen, four-wire type electric resistance touch screen, five-line electric resistance touch screen, eight line formula electric resistance touch screen and multipoint resistance type touch screens.Below with concrete touch-screen for example illustrates the present invention.
Refer to Fig. 1 and Fig. 2, first embodiment of the invention provides a kind of surface capacitance type touch screen 10, and this touch-screen 10 comprises a matrix 12, transparency conducting layer 14, two the first electrodes, 16, four wires 17 and two the second electrodes 18.Described matrix 12 has surface 121, and this transparency conducting layer 14 is arranged on the surface 121 of matrix 12; Described two the first electrodes 16 are along the spaced setting of Y-direction, described two the second electrode 18 spaced settings in X direction, and these two the first electrodes 16 and two the second electrodes 18 are all electrically connected with described transparency conducting layer 14, in order to form equipotential plane on transparency conducting layer 14.Wherein, described X-direction is vertical with Y-direction is arranged.Described two the first electrodes 16 and two the second electrodes 18 are electrically connected with external circuits (not shown) respectively by described four wires 17.Described four wires 17 are pooled to the side on the surface 121 of described matrix 12, and are electrically connected with described external circuits.The region at described transparency conducting layer 14 place is touch area, and the region at described four wire 17 places is defined as routing region, and this routing region is arranged on the periphery of described touch area.
Particularly, described matrix 12 is made up of planar section 123 and bending part 125, and the angle that this bending part 125 and described planar section 123 are formed is 90 °.This planar section 123 is arranged at the center on the surface 121 of this matrix 12, and described bending part 125 is arranged around this planar section 123.The region at planar section 123 place of this matrix 12 is described touch area, and described transparency conducting layer 14 is arranged at the planar section 123 of this matrix 12 completely.This matrix 12 bends along the periphery of described transparency conducting layer 14, makes the bending part 125 of this matrix 12 be arranged on the surrounding of the planar section 123 of this matrix 12, and makes described routing region be arranged at the bending part 125 of this matrix 12 completely.Described two the first electrodes 16, two the second electrodes 18 and four wires 17 are arranged at the bending part 125 on the surface 121 of this matrix 12.Therefore, the surface that the touch-screen 10 that the present embodiment provides is used for showing image is all touch area, does not have routing region; Thus make the smaller volume of this touch-screen 10, be applied in microminiaturized electron device than being easier to.Wherein, the material of described matrix 12 is polycarbonate (PC).Described transparency conducting layer 14 is carbon nano-tube film described in one deck, and the carbon nano-tube in this carbon nano-tube film extends substantially in X direction.Described two the first electrodes 16 and the second electrode 18 are all that the silver by printing bar shaped on the surface 121 of described matrix 12 is starched and formed.Described four wires 17 are also formed by printing silver slurry on the surface 121 of matrix 12.
Be appreciated that the quantity of the first electrode 16 in described touch-screen 10 and the second electrode 18 all can be one.Described X-direction and Y-direction also can only crossing and out of plumb be arranged.
Refer to Fig. 3 to Fig. 5, second embodiment of the invention provides multipoint capacitive touch screen 20.This touch-screen 20 comprises the first matrix 21, first transparency conducting layer 22, second matrix 23, second transparency conducting layer 24, multiple first electrode 26, multiple first wire 27, multiple second electrode 28 and multiple second wire 29.Wherein, defining this touch-screen 20 near the surface direction of its display image is top, and this touch-screen 20 sets gradually described second transparency conducting layer 24, described second matrix 23, described first transparency conducting layer 22, described first matrix 21 from top to bottom.Described multiple first electrode 26 is arranged at a side of described first transparency conducting layer 22 along first direction (X-direction), the plurality of first electrode 26 is spaced and be electrically connected with this first transparency conducting layer 22 respectively; The plurality of first electrode 26 is electrically connected with external circuits (not shown) respectively by described multiple first wire 27.Described multiple second electrode 28 is arranged at a side of described second transparency conducting layer 24 along second direction (Y-direction), the plurality of second electrode 28 is spaced and be electrically connected with this second transparency conducting layer 24 respectively; The plurality of second electrode 28 is electrically connected with described external circuits respectively by described multiple second wire 29.The region described in center of described first transparency conducting layer 22 and the second transparency conducting layer 24 is defined as touch area, that is, the region that this first transparency conducting layer 22 is overlapping with the second transparency conducting layer 24 is defined as touch area.The region at described multiple first wire 27 and the second wire 29 place is defined as routing region.
Described first matrix 21 has surface 212.This first matrix 21 is made up of planar section 213 and bending part 215, and this bending part 215 is positioned at the side that this planar section 213 is parallel to described X-direction.The bending part 215 of this first matrix 21 is provided with described multiple first wire 27 of a part.Wherein, the material of described first matrix 21 is polycarbonate (PC).
Described first transparency conducting layer 22 is arranged at the surface 212 of described first matrix 21, and is arranged at the planar section 123 of described first matrix 21 completely.Described first transparency conducting layer 22 is single-layered carbon nanotube periosteum, and the most of carbon nano-tube in this carbon nano-tube film in the same direction preferred orientation extend.Wherein, second direction in this first transparency conducting layer 22 is as the Y-direction in Fig. 4, this second direction be the integral shaft of most of carbon nano-tube in this carbon nanotube layer to bearing of trend, the carbon nano-tube namely in this carbon nanotube layer joins end to end along Y-direction and is arranged of preferred orient.This first transparency conducting layer 22 resistivity is in the Y direction less than its resistivity in the other direction, and maximum perpendicular to the resistivity in this Y-direction.The first direction of this first transparency conducting layer is as the X-direction in Fig. 5, and this X-direction is parallel to the surface of this carbon nanotube layer, and crossing with Y-direction.Preferably, X-direction is perpendicular to Y-direction, and this first transparency conducting layer 22 resistivity is in the Y direction less than its resistivity in the X direction.
Be appreciated that described first transparency conducting layer 22 can also for the carbon nano-tube film through etching or laser treatment.This carbon nano-tube film forms multiple laser cut line through laser treatment on its surface, thus strengthens the conduction anisotropy of this first transparency conducting layer 22 further.
Because the carbon nano-tube film in this first transparency conducting layer 22 has good electric conductivity in the Y direction, this first transparency conducting layer 22 can regard multiple spaced and parallel with the Y-direction conductive strips of formation as, when described multiple first electrode 26 is arranged on this first transparency conducting layer 22 side in X direction spaced reciprocally, the plurality of first electrode 26 is electrically connected with described conductive strips respectively.Wherein, the plurality of first electrode 26 is formed by the method for wire mark conductive silver paste on described first transparency conducting layer 22, and correspondence is arranged at the planar section 213 of described first matrix 21.
Each first wire 27 one end is electrically connected with first electrode 26, and the other end of the plurality of first wire 27 comes together in the side of described first transparency conducting layer 22, and is electrically connected with external circuits (not shown).Described multiple first wire 27 electrically insulated from one another is arranged at the surface 212 of described first matrix 21.Particularly, multiple first wire 27 is formed by wire mark conductive silver paste on the edge on the surface 212 of described first matrix 21; The plurality of first wire 27, through the bending part 215 of described first matrix 21, to extend and the planar section 213 coming together in this first transparency conducting layer 22 periphery is parallel to the side of described Y-direction; That is, the part that the plurality of first wire 27 is parallel to described X-direction is arranged at the bending part 215 of described first matrix 21, and the part being parallel to described Y-direction is arranged at the planar section 213 of this first matrix 21.
Described second matrix 23 has surface 232, and the surface 232 of this second matrix 23 is arranged away from the surface 212 of described first matrix 21.The material of this second matrix 23 is glass, is to carry out bending according to the structure of this touch-screen 20 or the electron device applying this touch-screen 20, and therefore, this second matrix 23 is planar structure, does not comprise bending part.Be appreciated that the material of described second matrix 23 is except for except glass, can also be that quartz waits hard material, also can be flexible material.When the material of this second matrix 23 is hard material, cannot bend.When the material of described second matrix 23 is flexible material, this second matrix 23 can bend.
Described second transparency conducting layer 24 is arranged at the surface 232 of described second matrix 23.This second transparency conducting layer 24 has the spaced conductive structure of multiple patterning, such as strip conductive structure, and it is parallel to each other and interval predeterminable range haply.The plurality of conductive structure extends along described X-direction, and arranges along the Y-direction interval of described second transparency conducting layer 24.In general, the conducting direction of the conductive structure of this second transparency conducting layer 24 is perpendicular to the direction of the minimum specific resistance of described first transparency conducting layer 22.Particularly, this second transparency conducting layer 24 is the ito thin film of patterning, and comprises multiple strip conductive structure, and the conducting direction of the plurality of strip conductive structure is perpendicular to the bearing of trend of the most of carbon nano-tube in described first transparency conducting layer 22.This second transparency conducting layer 24 can not bend, in order to avoid affect the electric conductivity of this second transparency conducting layer 24.
Be appreciated that the material of described second transparency conducting layer 24 can also be identical with the material of described first transparency conducting layer 22, be the carbon nano-tube film with flexible electrically conducting transparent performance.
Described multiple second electrode 28 is spaced the side being arranged at described second transparency conducting layer 24 along Y-direction, and is electrically connected respectively with multiple conductive structures of this second transparency conducting layer 24.Each second electrode 28 extends along described X-direction.The material of the plurality of second electrode 28 is identical with the material of described multiple first electrode 26.
One end of each second wire 29 is electrically connected with second electrode 28, and the other end of the plurality of second wire 29 comes together in the side of described second transparency conducting layer 24, and is electrically connected with described external circuits (not shown).Particularly, multiple second wire 29 is formed by wire mark conductive silver paste on the edge being parallel to described Y-direction on described second matrix 23 surface 232; The plurality of second wire 29 can not bend, and the plurality of second wire 29 come together in described second matrix 23 surface 232 on be parallel to the side of described Y-direction, the junction correspondence being in described first wire 27 of collecting of the plurality of second wire 29 is arranged.
Be appreciated that the both sides that described multiple first electrode 26 can be arranged at described first transparency conducting layer 22 respectively and is oppositely arranged, described multiple second electrode 28 can be arranged at the both sides that described second transparency conducting layer 24 is oppositely arranged respectively.In addition, the concrete quantity of described first electrode 26 and the second electrode 28 can be selected as required.In addition, the quantity of an electrode in described first electrode 26 and the second electrode 28 is one, and the quantity of another electrode is multiple.
Because described first transparency conducting layer 22 and the second transparency conducting layer 24 are by described second matrix 23 interval, form multiple electric capacity at multiple conductive strips of described first transparency conducting layer 22 and the cross one another multiple crossover location place of multiple conductive structures of described second transparency conducting layer 24.The plurality of electric capacity records by the external circuit be electrically connected with described first electrode 26 and the second electrode 28.When the touch objects such as finger are near one or more crossover location, the electric capacity of this crossover location changes, and described external circuit detects the electric capacity of this change, thus obtains the coordinate of this touch location.
Refer to Fig. 6, Fig. 7 and Fig. 8, third embodiment of the invention provides touch-screen 30.This touch-screen 30 is resistive touch screen, and this touch-screen 30 comprises the first battery lead plate 32, second battery lead plate 34, multiple transparent point-like spacer 36 and Insulating frame 38.Wherein, described first battery lead plate 32 and the second battery lead plate 34 relative spacing are arranged.Described multiple transparent point-like spacer 36 and described Insulating frame 38 are arranged between described first battery lead plate 32 and the second battery lead plate 34, and this Insulating frame 38 by described first battery lead plate 32 and the second battery lead plate 34 spaced apart.
Described first battery lead plate 32 comprises the first matrix 320, first transparency conducting layer 322, two the first electrodes 324 and two the first wires 327.This first matrix 320 is made up of planar section 323 and bending part 325.This bending part 325 is arranged at the two ends being parallel to second direction Y-direction as shown in Figure 6 that described planar section 323 is oppositely arranged.This first matrix 320 has surface 321, described first transparency conducting layer 322 is arranged at the surface 321 of this first matrix 320, and most first transparency conducting layer 322 is arranged at the planar section 323 of described first matrix 320, another part first transparency conducting layer 322 is arranged at the bending part 325 of this first matrix 320; This first transparency conducting layer 322 being arranged at the bending part 325 of this first matrix 320 arranges described two the first electrodes 324, these two the first electrodes 324 are disposed on the two ends of surface along the two ends X-direction as shown in Figure 6 of first direction of this first transparency conducting layer 322, and are electrically connected with this first transparency conducting layer 322.Described two the first electrodes 324 are electrically connected with external circuits respectively by described two the first wires 327; These two the first wire 327 electrically insulated from one another are arranged at the surface 321 of the first matrix 320 of described first transparency conducting layer 322 periphery.Particularly, these two first wire 327 parts are arranged at the planar section 323 of this first matrix 320; Another part is arranged at the bending part 325 of this first matrix 320.
Described second battery lead plate 34 and the first battery lead plate 32 interval are arranged.Described second battery lead plate 34 comprises the second matrix 340, second transparency conducting layer 342, two the second electrodes 344 and two the second wires 347.This second matrix 340 has surface 341, and this surface 341 is oppositely arranged with the surface 321 of described first matrix 320.This second matrix 340 is made up of planar section 343 and bending part 345; And the planar section 343 of this second matrix 340 is corresponding with the planar section 323 of described first matrix 320 arranges.The bending part 345 of this second matrix 340 is arranged at the side that described second matrix 340 is parallel to described Y-direction.Described second transparency conducting layer 342 is arranged at the surface 341 of described second matrix 340; Particularly, this second transparency conducting layer 342 is arranged at the planar section 343 of described second matrix 340, and and interval relative with described first transparency conducting layer 322 is arranged, and the distance at this interval is 2 microns ~ 10 microns.Described two the second electrodes 344 are disposed on the two ends of surface along Y-direction of the second transparency conducting layer 342, and are electrically connected with the second transparency conducting layer 342.Described two the second electrodes 344 are electrically connected with described external circuits respectively by described two the second wires 347.A part for a wire in these two the second wires 347 is arranged at the bending part 345 of described second matrix 340, and another part is arranged at the planar section 343 of this second matrix 340; In these two the second wires 347, another wire is arranged at the planar section 343 of this second matrix 340.Wherein, the region at the part place that described first transparency conducting layer 322 is relative with the second transparency conducting layer 342 is defined as touch area, and the region at described two the first wires 327 and two the second wire 347 places is defined as routing region.
Wherein, as long as described first direction can be crossing with second direction.In the present embodiment, first direction and X-direction perpendicular to second direction and Y-direction, i.e. two the first electrodes 324 and the orthogonal setting of two the second electrodes 344.
Described first matrix 320 is transparent, and is the film with suitable pliability or thin plate, as the flexible material such as plastics or resin.The material of described second matrix 340 can be identical with the first matrix 320, is transparent flexible material, also can be transparent hard material.In the present embodiment, the material of described first matrix 320 and the second matrix 340 is PET, and thickness is 2 millimeters.
Described first transparency conducting layer 322 and the second transparency conducting layer 342 are all one deck carbon nano-tube film.Most of carbon nano-tube in this first transparency conducting layer 322 are extended substantially in X direction and are joined end to end by Van der Waals force.Most of carbon nano-tube in this second transparency conducting layer 342 are substantially extended along Y-direction and are joined end to end by Van der Waals force.Be appreciated that a transparency conducting layer in this first transparency conducting layer 322 and the second transparency conducting layer 342 can be the transparent conductive material of the hard such as ITO, ATO.
The material of described first electrode 324 and the second electrode 344 is conductive silver paste.Be appreciated that this first electrode 324 and the second electrode 344 material can also for carbon nano-tube or other there is the conductive material of proper toughness and easy bending degree, as long as guarantee that this first electrode 324 can conduct electricity with this second electrode 344.In addition, described two the first electrodes 324 and two the second electrodes 344 are also arranged on described second matrix 340 simultaneously.
Described two the first wires 327 are electrically connected one by one with described two the first electrodes 324; The plurality of first wire 327 comes together in the side on the surface 321 of described first matrix 320, and is electrically connected with described external circuits.Described two the second wires 347 are electrically connected one by one with described two the second electrodes 344; The plurality of second wire 347 comes together in the side on the surface 341 of described second matrix 340, and is electrically connected with described external circuits.Particularly, described two the first wires 327 are all arranged at the planar section 323 of described first matrix 320, and the planar section 323 coming together in this first matrix 320 is parallel to the side of described X-direction; A wire in these two the second wires 347 is arranged at the side that described second matrix 340 planar section 323 is parallel to described X-direction, another wire through the bending part 345 of this second matrix 340, and extends to the side that described second matrix 340 planar section 343 is parallel to described X-direction; These two the second wires 347 are collected in the side of described X-direction at the sides aligned parallel of described second matrix 340 planar section 343.The junction of described first wire 327 is corresponding with the junction of the second wire 347 to be arranged.Described two the first wires 327 and two the second wires 347 are all formed by printing conductive silver paste.
Described multiple point-like spacer 36 is arranged on the second transparency conducting layer 342 of the second battery lead plate 34, and the plurality of point-like spacer 36 is intervally installed.Described Insulating frame 38 is arranged between described first battery lead plate 32 and the second battery lead plate 34, to guarantee that described first transparency conducting layer 322 and interval relative with described second transparency conducting layer 342 is arranged.Described multiple point-like spacer 36 all can adopt insulating resin or other insulating material to make with Insulating frame 38, and this point-like spacer 36 should be transparent material and makes.Described multiple point-like spacer 36 can make the first battery lead plate 32 and the second battery lead plate 34 electrical isolation with Insulating frame 38.This Insulating frame 38 is appreciated that, when touch-screen 30 size is less, the plurality of point-like spacer 36 is selectable structure, as long as can guarantee described first battery lead plate 32 and the second battery lead plate 34 electrical isolation.
Be appreciated that the quantity of described first electrode 324, first wire 327, second electrode 344 and the second wire 347 is not limited to two, also can be multiple, thus make touch-screen realize multiple point touching.
The bending part at least setting unit routing region of the matrix in the touch-screen that the embodiment of the present invention provides, the area making the touch surface of this touch-screen can not realize the region of touch-control reduces, therefore, under the condition of the size of the touch area of this touch-screen of guarantee, the size of this touch-screen can be reduced; Described routing region can coordinate the structure of this touch-screen or the electron device of applying this touch-screen to connect, and be arranged at the bending part of described matrix, thus by this touch-screen applications in the electron device of reduced size, the microminiaturization of the electron device using touch-screen can be conducive to.
In addition, those skilled in the art can also do other change 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 (14)
1. a touch-screen, it comprises:
Matrix;
Transparency conducting layer, this transparency conducting layer is formed in the surface of described matrix, and at least part of region of this transparency conducting layer is defined as touch area;
At least one electrode, this at least one electrode is arranged at least one end of described transparency conducting layer and is electrically connected with this transparency conducting layer; And
At least one wire, at least one electrode described is electrically connected with external circuits by this at least one wire, and the region at this at least one wire place is defined as routing region,
It is characterized in that,
This at least one wire is arranged on the outer peripheral areas outside described transparency conducting layer,
At least one side edge bending of described matrix forms bending part, and described routing region is arranged at the bending part of this matrix at least partly.
2. touch-screen as claimed in claim 1, it is characterized in that, at least one wire described is arranged at the bending part of described matrix at least partly.
3. touch-screen as claimed in claim 2, it is characterized in that, at least one electrode described is arranged at the bending part of described matrix at least partly.
4. touch-screen as claimed in claim 3, it is characterized in that, described electrode and described wire are all arranged on the bending part of described matrix.
5. touch-screen as claimed in claim 3, it is characterized in that, described electrically conducting transparent layer segment is arranged at the bending part of described matrix.
6. touch-screen as claimed in claim 1, it is characterized in that, multiple side edge bendings of described matrix form described bending part, and multiple sides of this matrix bend to same direction.
7. touch-screen as claimed in claim 1, it is characterized in that, the material of described matrix is flexible material.
8. touch-screen as claimed in claim 7, it is characterized in that, described flexible material is polycarbonate, polymethylmethacrylate, polyethylene terephthalate, polyethersulfone, cellulose esters, Polyvinylchloride, benzocyclobutene or acryl resin.
9. touch-screen as claimed in claim 1, it is characterized in that, described transparency conducting layer comprises carbon nanotube layer, and this carbon nanotube layer comprises some carbon nano-tube, and the preferred orientation extension in the same direction of this some carbon nano-tube.
10. touch-screen as claimed in claim 9, it is characterized in that, described carbon nanotube layer comprises at least one carbon nano-tube film, each carbon nano-tube film comprises the carbon nano-tube that preferred orientation in the same direction extends, and carbon nano-tube adjacent on each carbon nano-tube and bearing of trend in most of carbon nano-tube in this carbon nano-tube film is joined end to end by Van der Waals force.
11. touch-screens as claimed in claim 1, is characterized in that, the material of at least one wire described is conductive silver paste or carbon nano-tube.
12. 1 kinds of touch-screens, it comprises:
Matrix;
Transparency conducting layer, this transparency conducting layer is formed in the surface of described matrix, and at least part of region of this transparency conducting layer is defined as touch area;
At least two electrodes, these at least two electrode gap are arranged, and are electrically connected with this transparency conducting layer; And
At least two wires, these at least two conductor spacings arrange and are electrically connected with described at least two electrodes respectively, and are electrically connected with external circuits by these at least two electrodes, and the region at these at least two wire places is defined as routing region,
It is characterized in that,
These at least two wires are arranged on the outer peripheral areas outside described transparency conducting layer,
At least one side edge bending of described matrix forms bending part, and described routing region is arranged at the bending part of this matrix at least partly.
13. 1 kinds of touch-screens, it comprises:
First battery lead plate, this first battery lead plate comprises the first matrix, the first transparency conducting layer, at least one first electrode and at least one first wire; This first transparency conducting layer is arranged at described first matrix; This at least one first electrode is electrically connected with described first transparency conducting layer; This at least one first wire is electrically connected with described at least one first electrode, and is electrically connected with external circuits by this at least one first electrode; And
Second battery lead plate, this second battery lead plate comprises the second matrix, second transparency conducting layer, at least one second electrode and at least one the second wire, this second transparency conducting layer is arranged at described second matrix, the relative at least partly and interval of this second transparency conducting layer and described first transparency conducting layer is arranged, at least one second electrode described is electrically connected with this second transparency conducting layer, at least one second wire described is electrically connected with at least one second electrode described respectively, and this at least one electrode is electrically connected with external circuits, wherein, the part that described first transparency conducting layer and the second transparency conducting layer are oppositely arranged is touch area, the region at least one first wire described and at least one the second wire place described is defined as routing region,
It is characterized in that,
At least one first wire described and at least one second wire described are arranged on the outer peripheral areas outside described first transparency conducting layer and described second transparency conducting layer,
At least one side edge bending of at least one matrix in described first matrix and described second matrix forms bending part, and described routing region is arranged at described bending part at least partly.
14. 1 kinds of touch-screens, it comprises:
Matrix, this matrix has surface;
Transparency conducting layer, this transparency conducting layer is formed at the surface of described matrix, and at least part of region of this transparency conducting layer is defined as touch area; And
Wire, this wire is formed at the surface of described matrix, and the region at this wire place is defined as routing region,
It is characterized in that,
This wire is arranged on the outer peripheral areas outside described transparency conducting layer,
At least one side edge bending of described matrix forms bending part, and described routing region is arranged at the bending part of this matrix at least partly.
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| CN201010573847.0A CN102478992B (en) | 2010-11-26 | 2010-11-26 | Touch screen |
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| CN104346003A (en) * | 2013-07-26 | 2015-02-11 | 天津富纳源创科技有限公司 | Touch remote controller |
| CN103558934A (en) * | 2013-09-27 | 2014-02-05 | 南昌欧菲光科技有限公司 | Touch display module and electronic device |
| WO2015168857A1 (en) | 2014-05-06 | 2015-11-12 | Texas Instruments Incorporated | Capacitive touch sensor and method |
| CN104407754A (en) * | 2014-11-20 | 2015-03-11 | 业成光电（深圳）有限公司 | Touch display device |
| CN106557203A (en) * | 2016-11-08 | 2017-04-05 | 武汉华星光电技术有限公司 | Flexible touch screen and flexible touch display screen |
| CN109683369A (en) * | 2019-01-15 | 2019-04-26 | 惠州市华星光电技术有限公司 | A kind of capacitance touching control liquid crystal display panel and its display device |
| CN110119224B (en) * | 2019-05-17 | 2024-07-19 | 苏州诺菲纳米科技有限公司 | Touch sensor and preparation method thereof |
| CN110726930A (en) * | 2019-10-25 | 2020-01-24 | 常州电子研究所有限公司 | Sensor and manufacturing method thereof, detection system with sensor and detection method |
| CN118170278A (en) * | 2020-04-01 | 2024-06-11 | 万达光电科技股份有限公司 | Touch sensor |
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| CN1720499A (en) * | 2002-12-10 | 2006-01-11 | 日本写真印刷株式会社 | Narrow-frame touch panel |
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