CN102478992A - Touch screen - Google Patents
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- CN102478992A CN102478992A CN2010105738470A CN201010573847A CN102478992A CN 102478992 A CN102478992 A CN 102478992A CN 2010105738470 A CN2010105738470 A CN 2010105738470A CN 201010573847 A CN201010573847 A CN 201010573847A CN 102478992 A CN102478992 A CN 102478992A
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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, relate in particular to a kind of touch-screen based on CNT.
Background technology
In recent years; Be accompanied by the high performance and the diversified development of various electronic equipments such as mobile phone, touch navigation system, integrated form computer display and interactive TV, the electronic equipment that the touch-screen of light transmission is installed at the display surface of LCDs increases gradually.The user of electronic equipment is through touch-screen, on one side the displaying contents of the LCDs that is positioned at the touch-screen back side is carried out visual confirmation, utilize modes such as finger or pen to push touch-screen on one side and operate.Thus, can manipulate the various functions of the electronic equipment of this LCDs.
Said touch-screen can be according to its principle of work and transmission medium different, be divided into four types usually, be respectively resistance-type, capacitor induction type, infrared-type and surface acoustic wave type.Wherein resistive touch screen and capacitive touch screen are because it has high resolving power, high sensitivity and advantage such as durable is widely used.Existing resistive touch screen and capacitive touch screen all comprise glass basis, tin indium oxide (ITO) transparency conducting layer and a plurality of lead; Wherein, Said a plurality of lead is formed on the surface of said glass basis through the mode of serigraphy, and is electrically connected with said ITO transparency conducting layer.At least the subregion of said ITO transparency conducting layer is defined as the touch area.The zone definitions at said a plurality of leads place is the cabling zone of this touch-screen, and the touch controllable function of touch-screen can not be realized in this cabling zone.
Therefore, there is the cabling zone that can not realize touch controllable function in the touch surface of this touch-screen.Because the existence in cabling zone, think the touch area that makes this touch-screen have identical size, the size of this touch-screen is bigger, is unfavorable for using the development of miniaturization of the electronic equipment of this touch-screen.
Summary of the invention
Given this, necessary a kind of touch-screen is provided, the cabling zone of this touch-screen has toughness preferably, thus this cabling zone at least part can bend can be so that under the situation of the size that guarantees the touch area, make that the size of said touch-screen is smaller.
A kind of touch-screen comprises matrix; Transparency conducting layer, this transparency conducting layer are formed on a surface of said matrix, and the subregion at least of this transparency conducting layer is defined as the touch area; At least one electrode, this at least one electrode are arranged at least one end of said transparency conducting layer and are electrically connected with this transparency conducting layer; And at least one lead; This at least one lead is arranged on said transparency conducting layer periphery and said at least one electrode is electrically connected with external circuits; The zone definitions at this at least one lead place is the cabling zone; Wherein, at least one side of said matrix is bent to form bending part, and said cabling zone at least partly is arranged at the bending part of this matrix.
A kind of touch-screen, it comprises: matrix; Transparency conducting layer is formed on a surface of matrix, and wherein, the subregion at least of this transparency conducting layer is defined as the touch area; At least two electrode gap settings also are electrically connected with this transparency conducting layer; And at least two conductor spacings are provided with and are connected with said at least two electrode electricity respectively; And these at least two electrodes are electrically connected with external circuits; Wherein, The zone definitions at these at least two lead places is the cabling zone, and at least one side of said matrix is bent to form bending part, and said cabling zone at least partly is arranged at the bending part of this matrix.
A kind of touch-screen, it comprises: first battery lead plate, this first battery lead plate comprise first matrix, first transparency conducting layer, at least one first electrode and at least one first lead; This first transparency conducting layer is arranged at said first matrix; This at least one first electrode is electrically connected with said first transparency conducting layer; This at least one first lead is connected with said at least one first electrode electricity, and should be electrically connected with external circuits by at least one first electrode; And second battery lead plate; This second battery lead plate comprises second matrix, second transparency conducting layer, at least one second electrode and at least one second lead; This second transparency conducting layer is arranged at said second matrix; This second transparency conducting layer and said first transparency conducting layer part at least are provided with relatively and at interval, and said at least one second electrode is electrically connected with this second transparency conducting layer, and said at least one second lead is connected with said at least one second electrode electricity respectively; And this at least one electrode is electrically connected with external circuits; Wherein, the part that said first transparency conducting layer and second transparency conducting layer are oppositely arranged is the touch area, and the zone definitions at said at least one first lead and said at least one second lead place is the cabling zone.At least one side of at least one matrix in said first matrix and said second matrix is bent to form bending part, and said cabling zone part at least is arranged at said bending part.
A kind of touch-screen, it comprises: matrix, this matrix has the surface; Transparency conducting layer, this transparency conducting layer is formed at the surface of said matrix, and the subregion at least of this transparency conducting layer is defined as the touch area; And lead, this lead is formed at the surface of said matrix, and the zone definitions at this lead place is the cabling zone, and wherein, at least one side of said matrix is bent to form bending part, and said cabling zone at least partly is arranged at the bending part of this matrix.
Compared with prior art; The bending part of matrix is provided with the said cabling of part zone at least in the touch-screen provided by the invention; Make the area in the zone that can not realize touch-control of touch surface of this touch-screen reduce; Therefore, under the condition of the size of the touch area of the touch surface that guarantees this touch-screen, can reduce the size of this touch-screen; The structure that said cabling zone can cooperate this touch-screen or use the electron device of this touch-screen connects; And be arranged at the bending part of said matrix; Thereby can be in the electron device of reduced size with this touch-screen applications, help using the microminiaturization of the electron device of touch-screen.
Description of drawings
Fig. 1 is the not perspective view of the touch-screen of bending that first embodiment of the invention provides.
Fig. 2 is the perspective view of the touch-screen of the bending that provides of first embodiment of the invention.
Fig. 3 is the not spatial structure decomposing schematic representation of the touch-screen of bending that second embodiment of the invention provides.
Fig. 4 is the not perspective view of the touch-screen of bending that second embodiment of the invention provides.
Fig. 5 is the perspective view of the touch-screen of the bending that provides of second embodiment of the invention.
Fig. 6 is the not spatial structure decomposing schematic representation of the touch-screen of bending that third embodiment of the invention provides.
Fig. 7 is the not perspective view of the touch-screen of bending that third embodiment of the invention provides.
Fig. 8 is the perspective view of the touch-screen of the bending that provides of third embodiment of the invention.
The main element symbol description
Touch-screen 10; 20; 30
Bending part 125; 215; 325; 345
Transparency conducting layer 14
First transparency conducting layer 22; 322
Second transparency conducting layer 24; 342
First battery lead plate 32
Second battery lead plate 34
Point-like spacer 36
Embodiment
To combine accompanying drawing and specific embodiment below, touch-screen provided by the invention is done further to specify.
The present invention provides touch-screen, and this touch-screen comprises matrix, transparency conducting layer, at least one electrode and at least one lead.Wherein, said transparency conducting layer is arranged at the surface of said matrix.Said at least one electrode is electrically connected with this transparency conducting layer.Said at least one lead is electrically connected with said at least one electrode one by one, and is arranged on the periphery of said transparency conducting layer; This at least one lead is used for said at least one electrode is electrically connected with external circuits.At least the subregion of said transparency conducting layer is defined as the touch area, and the zone definitions at said at least one lead place is the cabling zone.At least one side bending of said matrix extends to form bending part, and said cabling zone at least partly is arranged at the bending part of said matrix.According to this touch-screen or use the structure of the electron device of this touch-screen; Said cabling zone at least partly is arranged at the bending part of said matrix; The touch surface that can reduce touch-screen effectively can not be used for the zone of display image; Under the condition of the size of the touch area of the touch surface that can guarantee this touch-screen, can reduce the size of this touch-screen; Thereby help using the microminiaturization of the electron device of touch-screen.
Said matrix is made up of planar section and said bending part.This bending part is to be extended and formed by the planar section of this matrix, and is positioned at the periphery of this planar section.Said touch area is arranged on the planar section of said matrix.According to the type of this touch-screen and the difference of concrete application mode; Said transparency conducting layer, at least one electrode and at least one lead have following several kinds of set-up modes with respect to the setting in touch area and cabling zone: first kind; The touch area is the planar section of whole substrate, and said cabling zone only is arranged on the bending part of this matrix, at this moment; Said transparency conducting layer is arranged at the planar section of whole substrate, and said transparency conducting layer optionally extends to the bending part of matrix.All leads and all electrodes all are arranged on the bending part of matrix.Second kind; The touch area is the part zone of the planar section of whole substrate; Another part zone of the plane domain of this matrix be provided with at least part said at least one lead and said at least one electrode of part at least; Be the bending part that the cabling zone not only is arranged on matrix, also be arranged on the planar section of matrix.At this moment, said transparency conducting layer can only be arranged on the also extensible cabling zone that is arranged on said matrix bending part, touch area of said matrix planar section.
The quantity that is appreciated that matrix, transparency conducting layer, electrode and lead among the present invention is not limited to one, can also be two, and the quantity of especially said electrode and lead can also be four or more.When the quantity of said electrode and lead when being a plurality of, when second kind of situation, the part of each electrode in these a plurality of electrodes is arranged at the bending part of said matrix, and a part is arranged at the planar section of this matrix; The part of each lead in said a plurality of lead is arranged at the bending part of said matrix, and a part is arranged at the planar section of this matrix.In addition, when the quantity of said electrode and lead when being a plurality of, when second kind of situation, at least one electrode in these a plurality of electrodes is arranged at the bending part of said matrix, and remaining several electrodes is arranged at the planar section of said matrix; At least one lead in said a plurality of lead is arranged at the bending part of said matrix, and remaining several leads are arranged at the planar section of said matrix.
Particularly, said matrix has suitable transparency, pliability, can be bent into arbitrary shape, and mainly plays a part to support.The material of this matrix is a flexible material; May be selected to be polycarbonate (PC), polymethylmethacrylate (PMMA) or polyethylene terephthalate polyester materials such as (PET), or materials such as polyethersulfone (PES), cellulose esters, PVC (PVC), benzocyclobutene (BCB) or acryl resin.Wherein, the material that forms said matrix is not limited to the above-mentioned material of enumerating.
Said transparency conducting layer comprises carbon nanotube layer.This carbon nanotube layer comprises some CNTs, and these some CNTs are arranged of preferred orient along same direction.Wherein, said carbon nanotube layer comprises at least one carbon nano-tube film.When said carbon nanotube layer comprises a plurality of carbon nano-tube film; This carbon nano-tube film can be parallel and not be had the gap coplane and be provided with or range upon range of setting; And the CNT in these a plurality of carbon nano-tube films is basic to be arranged of preferred orient the orientation basically identical of the CNT in the promptly adjacent carbon nano-tube film along same direction.Because the CNT in this carbon nano-tube film has good flexible, makes this carbon nano-tube film have good flexible, can bending fold become arbitrary shape and be difficult for breaking; And still has transparency and electric conductivity preferably.The thickness of said carbon nanotube layer is 0.5 nanometer～100 micron; Preferably, the thickness of this carbon nanotube layer is 100 nanometers～200 nanometers.This carbon nanotube layer has desirable penetrability, and the visible light transmissivity of single-layer carbon nano-tube film is greater than 85%, and the number of plies of carbon nano-tube film is not limit in this carbon nanotube layer, as long as can have desirable penetrability.
Said carbon nano-tube film comprises some CNTs, and is self supporting structure.Said some CNTs are for being arranged of preferred orient along same direction.The whole bearing of trend that said preferred orientation is meant most of CNTs in carbon nano-tube film basically in the same direction.And the whole bearing of trend of said most of CNTs is basically parallel to the surface of carbon nano-tube film.Further, most CNTs are to join end to end through Van der Waals force in the said carbon nano-tube film.Particularly, each CNT joins end to end through Van der Waals force with adjacent CNT on bearing of trend in the most of CNTs that extend basically in the same direction in the said carbon nano-tube film.Certainly, have the CNT of minority random alignment in the said carbon nano-tube film, these CNTs can not arranged the overall orientation of most of CNTs in the carbon nano-tube film and constitute obviously influence.Said self-supporting is that carbon nano-tube film does not need large-area supported; And as long as the relative both sides power of providing support can be unsettled on the whole and keep self membranaceous state; When being about to this carbon nano-tube film and placing (or being fixed in) to keep at a certain distance away on two supporters that are provided with, the carbon nano-tube film between two supporters can the membranaceous state of unsettled maintenance self.Said self-supporting is mainly through existing the continuous Van der Waals force that passes through to join end to end and extend carbon nanotubes arranged and realize in the carbon nano-tube film.
Particularly, the most CNTs that extend basically in the same direction in the said carbon nano-tube film, and nisi linearity, bending that can be suitable; Perhaps be not fully according to arranging on the bearing of trend, can be suitable depart from bearing of trend.Therefore, can not get rid of between the CNT arranged side by side in the most CNTs that extend basically in the same direction of carbon nano-tube film and possibly have the part contact.
Particularly, said carbon nano-tube film comprise a plurality of continuously and the CNT fragment that aligns.These a plurality of CNT fragments join end to end through Van der Waals force.Each CNT fragment comprises a plurality of CNTs that are parallel to each other, and these a plurality of CNTs that are parallel to each other are combined closely through Van der Waals force.This CNT fragment has length, thickness, homogeneity and shape arbitrarily.CNT in this carbon nano-tube film is arranged of preferred orient along same direction.
Said carbon nano-tube film can be through directly pulling acquisition from carbon nano pipe array.From carbon nano pipe array, pulling the concrete grammar that obtains said carbon nano-tube film comprises: (a) selected CNT fragment from said carbon nano pipe array, present embodiment are preferably and adopt adhesive tape or this carbon nano pipe array of adherent base bar contact with certain width to have the CNT fragment of certain width to select; (b) through moving this stretching tool, pull this selected CNT fragment, thereby end to endly pull out a plurality of CNT fragments, and then form continuous carbon nano tube film with certain speed.These a plurality of CNTs make this CNT fragment have certain width each other side by side.When CNT fragment that this is chosen pulls when direction breaks away from the growth substrate of carbon nano pipe array gradually in the tension lower edge; Because Van der Waals force effect; One after the other be drawn out end to end with this selected other adjacent CNT fragment of CNT fragment, thereby form continuous carbon nano tube film.
Said carbon nano-tube film has minimum electrical impedance at draw direction, and has the maximum electrical impedance perpendicular to draw direction, thereby possesses electrical impedance anisotropy, promptly conducts electricity anisotropy.It is the Chinese invention patent of 101239712B that structure of said carbon nano-tube film and preparation method thereof sees also on May 26th, 2010 disclosed, notification number.
Said at least one electrode is arranged at the surface of said transparency conducting layer or is arranged at the surface of said matrix, and is positioned at the periphery of said touch area.The type of the concrete set-up mode of this at least one electrode and said transparency conducting layer and the quantity of this electrode and said touch-screen is relevant, can confirm as required.The material of said electrode is metal, CNT, conductive silver paste or other conductive materials, can conduct electricity as long as guarantee this electrode.But; When said at least one electrode is arranged at the bending part of said matrix; This at least one electrode should guarantee that its electric conductivity receives the influence of the bending of this matrix hardly; Perhaps influence smallerly, can have the flexible material of electric conductivity like the material of this electrode for CNT or conductive silver paste etc.Be appreciated that when the quantity of said electrode is two or more these two or more electrodes are interval and insulation setting each other.
Said at least one lead can all be arranged at the bending part of said matrix; Also can partly be arranged at the bending part of said matrix, part is arranged at the planar section of this matrix.One end of each lead in said at least one lead is connected with a electrode electricity in said at least one electrode, and the other end is connected with external circuits, like circuit board.The material of said lead is the material with better electric conductivity of suitable flexibility, as, conductive silver paste, conducting polymer or CNT.Said lead generally adopts methods such as printing, coating or laying to be formed at the surface of said matrix.The quantity that is appreciated that said lead equates with the quantity of said electrode.When the quantity of said lead during at least two, these at least two conductor spacings and insulation are provided with, the electrode electricity connection that an end of each lead is corresponding with it; The other end of these at least two leads is pooled to the same side of said transparency conducting layer, and is connected with external circuits.
Said touch-screen can be various forms of touch-screens, like surface capacitance type touch screen, multiple spot capacitive touch screen, four-wire type electric resistance touch screen, five-line electric resistance touch screen, eight line formula electric resistance touch screens and multi-point electric resistance formula touch-screen.Be example shows the present invention with concrete touch-screen below.
See also Fig. 2 and Fig. 3, 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 first electrodes 16, four leads 17 and two second electrodes 18.Said matrix 12 has surface 121, and this transparency conducting layer 14 is arranged on the surface 121 of matrix 12; Said two first electrodes 16 are provided with along Y direction space; Said two second electrodes 18 are provided with along the directions X space; And these two first electrodes 16 and two second electrodes 18 all are electrically connected with said transparency conducting layer 14, in order on transparency conducting layer 14, to form equipotential plane.Wherein, said directions X is provided with the Y direction is vertical.Said two first electrodes 16 and two second electrodes 18 are electrically connected with external circuits (figure does not show) through said four leads 17 respectively.Said four leads 17 are pooled to a side on the surface 121 of said matrix 12, and are electrically connected with said external circuits.The zone at said transparency conducting layer 14 places is the touch area, and the zone definitions at said four leads 17 places is the cabling zone, and this cabling zone is arranged on the periphery of said touch area.
Particularly, said matrix 12 is made up of planar section 123 and bending part 125, and this bending part 125 is 90 ° with said planar section 123 formed angles.This planar section 123 is arranged at the center on the surface 121 of this matrix 12, and said bending part 125 is provided with around this planar section 123.The zone at planar section 123 places of this matrix 12 is said touch area, and said transparency conducting layer 14 is arranged at the planar section 123 of this matrix 12 fully.The bending of this matrix 12 along the periphery of said transparency conducting layer 14, make the bending part 125 of this matrix 12 be arranged on this matrix 12 planar section 123 around, and make said cabling zone be arranged at the bending part 125 of this matrix 12 fully.Said two first electrodes 16, two second electrodes 18 and four leads 17 are arranged at the bending part 125 on the surface 121 of this matrix 12.Therefore, it is the touch area all that the touch-screen 10 that present embodiment provides is used for surface of image display, does not have the cabling zone; Thereby make the smaller volume of this touch-screen 10, be applied in the microminiaturized electron device than being easier to.Wherein, the material of said matrix 12 is polycarbonate (PC).Said transparency conducting layer 14 is the said carbon nano-tube film of one deck, and the CNT in this carbon nano-tube film extends along directions X basically.Said two first electrodes 16 and second electrode 18 all are to starch through the silver of printing bar shaped on the surface 121 of said matrix 12 to form.Said four leads 17 also are to form through the slurry of printed silver on the surface 121 of matrix 12.
Be appreciated that first electrode 16 and the quantity of second electrode 18 in the said touch-screen 10 all can be one.Said directions X and Y direction also can only intersect and the out of plumb setting.
See also Fig. 4 to Fig. 6, second embodiment of the invention provides multiple spot capacitive touch screen 20.This touch-screen 20 comprises first matrix 21, first transparency conducting layer 22, second matrix 23, second transparency conducting layer 24, a plurality of first electrode 26, a plurality of first lead 27, a plurality of second electrode 28 and a plurality of second lead 29.Wherein, defining this touch-screen 20 is the top near its surface of image display direction, and this touch-screen 20 sets gradually said second transparency conducting layer 24, said second matrix 23, said first transparency conducting layer 22, said first matrix 21 from top to bottom.Said a plurality of first electrode 26 is arranged at a side of said first transparency conducting layer 22 along first direction (directions X), this a plurality of first electrode, 26 spaces and being electrically connected with this first transparency conducting layer 22 respectively; These a plurality of first electrodes 26 are electrically connected with external circuits (figure does not show) through said a plurality of first leads 27 respectively.Said a plurality of second electrode 28 is arranged at a side of said second transparency conducting layer 24 along second direction (Y direction), this a plurality of second electrode, 28 spaces and being electrically connected with this second transparency conducting layer 24 respectively; These a plurality of second electrodes 28 are electrically connected with said external circuits through said a plurality of second leads 29 respectively.The described zone definitions in center of said first transparency conducting layer 22 and second transparency conducting layer 24 is the touch area, that is, this first transparency conducting layer 22 and second transparency conducting layer, 24 overlapping areas are defined as the touch area.The zone definitions at said a plurality of first lead 27 and second lead, 29 places is the cabling zone.
Said 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 said directions X.The bending part 215 of this first matrix 21 is provided with said a plurality of first leads 27 of a part.Wherein, the material of said first matrix 21 is polycarbonate (PC).
Said first transparency conducting layer 22 is arranged at the surface 212 of said first matrix 21, and is arranged at the planar section 123 of said first matrix 21 fully.Said first transparency conducting layer 22 is the single-layer carbon nano-tube film, and the most of CNTs in this carbon nano-tube film extend along same direction preferred orientation.Wherein, Second direction in this first transparency conducting layer 22 such as the Y direction among Fig. 4; This second direction be the integral shaft of the most of CNTs in this carbon nanotube layer to bearing of trend, just the CNT in this carbon nanotube layer joins end to end along the Y direction and is arranged of preferred orient.This first transparency conducting layer 22 in the resistivity on the Y direction less than its resistivity on other directions, and maximum perpendicular to the resistivity on this Y direction.The first direction of this first transparency conducting layer such as the directions X among Fig. 5, this directions X is parallel to the surface of this carbon nanotube layer, and intersects with the Y direction.Preferably, directions X is perpendicular to the Y direction, and the resistivity of this first transparency conducting layer 22 on the Y direction is less than its resistivity on directions X.
Be appreciated that said first transparency conducting layer 22 can also be the carbon nano-tube film through etching or laser treatment.This carbon nano-tube film forms a plurality of laser cut line through laser treatment on its surface, thereby further strengthens the conduction anisotropy of this first transparency conducting layer 22.
Because the carbon nano-tube film in this first transparency conducting layer 22 has good electric conductivity on the Y direction; This first transparency conducting layer 22 can be regarded a plurality of spaces of formation and the conductive strips parallel with the Y direction as; Said a plurality of first electrode 26 is when directions X is arranged on these first transparency conducting layer, 22 1 sides spaced reciprocally, and these a plurality of first electrodes 26 are electrically connected with said conductive strips respectively.Wherein, the method that these a plurality of first electrodes 26 pass through wire mark conductive silver paste on said first transparency conducting layer 22 forms, and the corresponding planar section 213 that is arranged at said first matrix 21.
Each first lead, 27 1 end is electrically connected with one first electrode 26, and the other end of these a plurality of first leads 27 comes together in a side of said first transparency conducting layer 22, and is electrically connected with external circuits (figure does not show).Said a plurality of first lead, 27 electrically insulated from one another are arranged at the surface 212 of said first matrix 21.Particularly, form a plurality of first leads 27 through wire mark conductive silver paste on the edge on the surface 212 of said first matrix 21; These a plurality of first leads 27 are through the bending part 215 of said first matrix 21, extend and come together in the side that these first transparency conducting layer, 22 peripheral planar sections 213 are parallel to said Y direction; That is to say that the part that these a plurality of first leads 27 are parallel to said directions X is arranged at the bending part 215 of said first matrix 21, the part that is parallel to said Y direction is arranged at the planar section 213 of this first matrix 21.
Said second matrix 23 has surface 232, and the surface 232 of this second matrix 23 is provided with away from the surface 212 of said first matrix 21.The material of this second matrix 23 is a glass, is to bend according to this touch-screen 20 or the structure of using the electron device of this touch-screen 20, and therefore, this second matrix 23 is a planar structure, does not comprise bending part.The material that is appreciated that said second matrix 23 can also be hard materials such as quartz except for the glass, also can be flexible material.When the material of this second matrix 23 is hard material, cannot bend.When the material of said second matrix 23 was flexible material, this second matrix 23 can bend.
Said second transparency conducting layer 24 is arranged at the surface 232 of said second matrix 23.This second transparency conducting layer 24 has between a plurality of patternings at a distance from the conductive structure that is provided with, strip conductive structure for example, and it is parallel to each other and predeterminable range at interval haply.These a plurality of conductive structures extend along said directions X, and are provided with at interval along the Y direction of said 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 said first transparency conducting layer 22.Particularly, this second transparency conducting layer 24 is the ito thin film of patterning, and comprises a plurality of strip conductive structures, and the conducting direction of these a plurality of strip conductive structures is perpendicular to the bearing of trend of the most of CNTs in said first transparency conducting layer 22.This second transparency conducting layer 24 can not bend, in order to avoid influence the electric conductivity of this second transparency conducting layer 24.
The material that is appreciated that said second transparency conducting layer 24 can also be identical with the material of said first transparency conducting layer 22, is the carbon nano-tube film with flexible electrically conducting transparent performance.
Said a plurality of second electrode 28 is spaced a side that is arranged at said second transparency conducting layer 24 along the Y direction, and is electrically connected respectively with a plurality of conductive structures of this second transparency conducting layer 24.Each second electrode 28 extends along said directions X.The material of these a plurality of second electrodes 28 is identical with the material of said a plurality of first electrodes 26.
One end of each second lead 29 is electrically connected with one second electrode 28, and the other end of these a plurality of second leads 29 comes together in a side of said second transparency conducting layer 24, and is electrically connected with said external circuits (figure does not show).Particularly, form a plurality of second leads 29 through wire mark conductive silver paste on the edge that is parallel to said Y direction on said second matrix 23 surfaces 232; These a plurality of second leads 29 can not bend, and these a plurality of second leads 29 come together in a side that is parallel to said Y direction on the surface 232 of said second matrix 23, these a plurality of second leads 29 compile that the junction that is in said first lead 27 is corresponding to be provided with.
Be appreciated that said a plurality of first electrode 26 can be arranged at the both sides that said first transparency conducting layer 22 is oppositely arranged respectively, said a plurality of second electrodes 28 can be arranged at the both sides that said second transparency conducting layer 24 is oppositely arranged respectively.In addition, the concrete quantity of said first electrode 26 and second electrode 28 can be selected as required.In addition, the quantity of an electrode in said first electrode 26 and second electrode 28 is one, and the quantity of another electrode is a plurality of.
Because said first transparency conducting layer 22 and second transparency conducting layer 24 form a plurality of electric capacity at a plurality of conductive strips of said first transparency conducting layer 22 and the cross one another a plurality of crossover locations of a plurality of conductive structures place of said second transparency conducting layer 24 through said second matrix 23 at interval.These a plurality of electric capacity can record through the external circuit that is electrically connected with said first electrode 26 and second electrode 28.When touch objects such as finger during near one or more crossover location, the electric capacity of this crossover location changes, and said external circuit detects the electric capacity of this variation, thereby obtains the coordinate of this touch location.
See also Fig. 7, Fig. 8 and Fig. 9, third embodiment of the invention provides touch-screen 30.This touch-screen 30 is a resistive touch screen, and this touch-screen 30 comprises first battery lead plate 32, second battery lead plate 34, a plurality of transparent point-like spacer 36 and Insulating frame 38.Wherein, said first battery lead plate 32 and the 34 relative spacing settings of second battery lead plate.Said a plurality of transparent point-like spacer 36 and said Insulating frame 38 are arranged between said first battery lead plate 32 and second battery lead plate 34, and this Insulating frame 38 is spaced apart with said first battery lead plate 32 and second battery lead plate 34.
Said first battery lead plate 32 comprises first matrix 320, first transparency conducting layer 322, two first electrodes 324 and two first leads 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 that are parallel to second direction Y direction as shown in Figure 6 that said planar section 323 is oppositely arranged.This first matrix 320 has surface 321; Said 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 said first matrix 320, and another part first transparency conducting layer 322 is arranged at the bending part 325 of this first matrix 320; This is arranged on first transparency conducting layer 322 of bending part 325 of this first matrix 320 said two first electrodes 324 is set; These two first electrodes 324 are arranged on the two ends of the surface of this first transparency conducting layer 322 along the two ends directions X as shown in Figure 6 of first direction at interval, and are electrically connected with this first transparency conducting layer 322.Said two first electrodes 324 are electrically connected with external circuits through said two first leads 327 respectively; These two first lead 327 electrically insulated from one another are arranged at the surface 321 of first matrix 320 of said first transparency conducting layer 322 peripheries.Particularly, these two first lead 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.
Said second battery lead plate 34 and first battery lead plate 32 are provided with at interval.Said second battery lead plate 34 comprises second matrix 340, second transparency conducting layer 342, two second electrodes 344 and two second leads 347.This second matrix 340 has surface 341, and this surface 341 is oppositely arranged with the surface 321 of said 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 and the 323 corresponding settings of the planar section of said first matrix 320.The bending part 345 of this second matrix 340 is arranged at the side that said second matrix 340 is parallel to said Y direction.Said second transparency conducting layer 342 is arranged at the surface 341 of said second matrix 340; Particularly, this second transparency conducting layer 342 is arranged at the planar section 343 of said second matrix 340, and is provided with relatively and at interval with said first transparency conducting layer 322, and the distance at this interval is 2 microns～10 microns.Said two second electrodes 344 are arranged on the two ends of the surface of second transparency conducting layer 342 along the Y direction at interval, and are electrically connected with second transparency conducting layer 342.Said two second electrodes 344 are electrically connected with said external circuits through said two second leads 347 respectively.The part of a lead in these two second leads 347 is arranged at the bending part 345 of said second matrix 340, and another part is arranged at the planar section 343 of this second matrix 340; Another lead is arranged at the planar section 343 of this second matrix 340 in these two second leads 347.Wherein, the zone definitions that said first transparency conducting layer 322 and second transparency conducting layer, 342 relative parts belong to is the touch area, and the zone definitions at said two first leads 327 and two second lead 347 places is the cabling zone.
Wherein, said first direction and second direction are as long as can intersect.In the present embodiment, first direction is that directions X is the Y direction perpendicular to second direction, i.e. two first electrodes 324 and two second electrode 344 quadrature settings.
Said first matrix 320 is transparent, and film or thin plate for having suitable pliability, like flexible materials such as plastics or resins.The material of said second matrix 340 can be identical with first matrix 320, is transparent flexible material, also can be transparent hard material.In the present embodiment, the material of said first matrix 320 and second matrix 340 is PET, and thickness is 2 millimeters.
Said first transparency conducting layer 322 and second transparency conducting layer 342 all are one deck carbon nano-tube film.Most of CNTs in this first transparency conducting layer 322 join end to end along the directions X extension and through Van der Waals force basically.Most of CNTs in this second transparency conducting layer 342 join end to end along the extension of Y direction and through Van der Waals force basically.Be appreciated that a transparency conducting layer in this first transparency conducting layer 322 and second transparency conducting layer 342 can be the transparent conductive material of hard such as ITO, ATO.
The material of said first electrode 324 and second electrode 344 is a conductive silver paste.The material that is appreciated that this first electrode 324 and second electrode 344 can also have the conductive material of proper toughness and easy bending degree for CNT or other, can conduct electricity with this second electrode 344 as long as guarantee this first electrode 324.In addition, said two first electrodes 324 and two second electrodes 344 also are arranged on said second matrix 340 simultaneously.
Said two first leads 327 are electrically connected with said two first electrodes 324 one by one; These a plurality of first leads 327 come together in a side on the surface 321 of said first matrix 320, and are electrically connected with said external circuits.Said two second leads 347 are electrically connected with said two second electrodes 344 one by one; These a plurality of second leads 347 come together in a side on the surface 341 of said second matrix 340, and are electrically connected with said external circuits.Particularly, said two first leads 327 all are arranged at the planar section 323 of said first matrix 320, and the planar section 323 that comes together in this first matrix 320 is parallel to a side of said directions X; A lead in these two second leads 347 is arranged at the side that said second matrix, 340 planar sections 323 are parallel to said directions X; The bending part 345 of another this second matrix 340 of lead process, and extend to the side that said second matrix, 340 planar sections 343 are parallel to said directions X; Make these two second leads 347 compile in the side that the edge of said second matrix, 340 planar sections 343 is parallel to said directions X.The corresponding setting of junction of the junction of said first lead 327 and second lead 347.Said two first leads 327 and two second leads 347 all form through printing conductive silver slurry.
Said a plurality of point-like spacer 36 is arranged on second transparency conducting layer 342 of second battery lead plate 34, and these a plurality of point-like spacers 36 are intervally installed.Said Insulating frame 38 is arranged between said first battery lead plate 32 and second battery lead plate 34, is provided with relatively and at interval to guarantee said first transparency conducting layer 322 and said second transparency conducting layer 342.Said a plurality of point-like spacer 36 all can adopt insulating resin or other insulating material to process with Insulating frame 38, and this point-like spacer 36 should be transparent material and processes.Said a plurality of point-like spacer 36 can make first battery lead plate 32 and second battery lead plate, 34 electrical isolations with Insulating frame 38.Be appreciated that when touch-screen 30 sizes hour, these a plurality of point-like spacers 36 be selectable structure, need only this Insulating frame 38 and can guarantee said first battery lead plate 32 and second battery lead plate, 34 electrical isolations.
The quantity that is appreciated that said first electrode 324, first lead 327, second electrode 344 and second lead 347 is not limited to two, also can be for a plurality of, thus make touch-screen realize multiple point touching.
The bending part of the matrix in the touch-screen that the embodiment of the invention provides is provided with part cabling zone at least; Make the touch surface of this touch-screen can not realize that the area in the zone of touch-control reduces; Therefore; Under the condition of the size of the touch area that guarantees this touch-screen, can reduce the size of this touch-screen; The structure that said cabling zone can cooperate this touch-screen or use the electron device of this touch-screen connects; And be arranged at the bending part of said matrix; Thereby can be in the electron device of reduced size with this touch-screen applications, help using the microminiaturization of the electron device of touch-screen.
In addition, those skilled in the art can also do other and change in spirit of the present invention, and these all should be included in the present invention's scope required for protection according to the variation that the present invention's spirit is done.
Claims (14)
1. touch-screen, it comprises:
Matrix;
Transparency conducting layer, this transparency conducting layer is formed on the surface of said matrix, and the subregion at least of this transparency conducting layer is defined as the touch area;
At least one electrode, this at least one electrode are arranged at least one end of said transparency conducting layer and are electrically connected with this transparency conducting layer; And
At least one lead, this at least one lead are arranged on said transparency conducting layer periphery and said at least one electrode are electrically connected with external circuits, and the zone definitions at this at least one lead place is the cabling zone,
It is characterized in that at least one side of said matrix is bent to form bending part, said cabling zone at least partly is arranged at the bending part of this matrix.
2. touch-screen as claimed in claim 1 is characterized in that, said at least one lead at least partly is arranged at the bending part of said matrix.
3. touch-screen as claimed in claim 2 is characterized in that, said at least one electrode at least partly is arranged at the bending part of said matrix.
4. touch-screen as claimed in claim 3 is characterized in that, said electrode and said lead all are arranged on the bending part of said matrix.
5. touch-screen as claimed in claim 3 is characterized in that said electrically conducting transparent layer segment is arranged at the bending part of said matrix.
6. touch-screen as claimed in claim 1 is characterized in that, a plurality of sides of said matrix are bent to form said bending part, and a plurality of sides of this matrix bend to same direction.
7. touch-screen as claimed in claim 1 is characterized in that, the material of said matrix is a flexible material.
8. touch-screen as claimed in claim 7 is characterized in that, said flexible material is polycarbonate, polymethylmethacrylate, polyethylene terephthalate, polyethersulfone, cellulose esters, PVC, benzocyclobutene or acryl resin.
9. touch-screen as claimed in claim 1 is characterized in that said transparency conducting layer comprises carbon nanotube layer, and this carbon nanotube layer comprises some CNTs, and these some CNTs extend along same direction preferred orientation.
10. touch-screen as claimed in claim 9; It is characterized in that; Said carbon nanotube layer comprises at least one carbon nano-tube film; Each carbon nano-tube film comprises the CNT that extends along same direction preferred orientation, and in the most of CNTs in this carbon nano-tube film on each CNT and the bearing of trend adjacent CNT join end to end through Van der Waals force.
11. touch-screen as claimed in claim 1 is characterized in that, the material of said at least one lead is conductive silver paste or CNT.
12. a touch-screen, it comprises:
Matrix;
Transparency conducting layer, this transparency conducting layer is formed on the surface of said matrix, and the subregion at least of this transparency conducting layer is defined as the touch area;
At least two electrodes, these at least two electrode gap settings, and be electrically connected with this transparency conducting layer; And
At least two leads, these at least two conductor spacings are provided with and are connected with said at least two electrode electricity, and these at least two electrodes are electrically connected with external circuits respectively, and the zone definitions at these at least two lead places is the cabling zone,
It is characterized in that at least one side of said matrix is bent to form bending part, said cabling zone at least partly is arranged at the bending part of this matrix.
13. a touch-screen, it comprises:
First battery lead plate, this first battery lead plate comprise first matrix, first transparency conducting layer, at least one first electrode and at least one first lead; This first transparency conducting layer is arranged at said first matrix; This at least one first electrode is electrically connected with said first transparency conducting layer; This at least one first lead is connected with said at least one first electrode electricity, and should be electrically connected with external circuits by at least one first electrode; And
Second battery lead plate; This second battery lead plate comprises second matrix, second transparency conducting layer, at least one second electrode and at least one second lead; This second transparency conducting layer is arranged at said second matrix, and this second transparency conducting layer and said first transparency conducting layer part at least are provided with relatively and at interval, and said at least one second electrode is electrically connected with this second transparency conducting layer; Said at least one second lead is connected with said at least one second electrode electricity respectively; And this at least one electrode is electrically connected with external circuits, and wherein, the part that said first transparency conducting layer and second transparency conducting layer are oppositely arranged is the touch area; The zone definitions at said at least one first lead and said at least one second lead place is the cabling zone
It is characterized in that at least one side of at least one matrix in said first matrix and said second matrix is bent to form bending part, said cabling zone part at least is arranged at said bending part.
14. a touch-screen, it comprises:
Matrix, this matrix has the surface;
Transparency conducting layer, this transparency conducting layer is formed at the surface of said matrix, and the subregion at least of this transparency conducting layer is defined as the touch area; And
Lead, this lead is formed at the surface of said matrix, and the zone definitions at this lead place is the cabling zone,
It is characterized in that at least one side of said matrix is bent to form bending part, said cabling zone at least partly is arranged at the bending part of this matrix.
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| CN201010573847.0A CN102478992B (en) | 2010-11-26 | 2010-11-26 | Touch screen |
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| CN201010573847.0A CN102478992B (en) | 2010-11-26 | 2010-11-26 | Touch screen |
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| CN201510019673.6A Division CN104536618A (en) | 2010-11-26 | 2010-11-26 | Touch screen |
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| CN102478992B CN102478992B (en) | 2015-02-25 |
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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 |
| 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 |
| CN106575186A (en) * | 2014-05-06 | 2017-04-19 | 德克萨斯仪器股份有限公司 | Capacitive touch sensor and method |
| 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 |
| 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 |
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| CN113495640A (en) * | 2020-04-01 | 2021-10-12 | 万达光电科技股份有限公司 | Touch sensor |
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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 |
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| US11233508B2 (en) | 2014-05-06 | 2022-01-25 | Texas Instruments Incorporated | Capacitive touch sensor and method |
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| 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 |
| WO2020233040A1 (en) * | 2019-05-17 | 2020-11-26 | 苏州诺菲纳米科技有限公司 | Touch sensor and preparation method thereof |
| US12093476B2 (en) | 2019-05-17 | 2024-09-17 | Nuovo Film Suzhou China Inc. | Touch sensor and method for making the same |
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| CN113495640A (en) * | 2020-04-01 | 2021-10-12 | 万达光电科技股份有限公司 | Touch sensor |
| CN113495640B (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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