CN102478993B - Electronic device - Google Patents
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- CN102478993B CN102478993B CN201010573849.XA CN201010573849A CN102478993B CN 102478993 B CN102478993 B CN 102478993B CN 201010573849 A CN201010573849 A CN 201010573849A CN 102478993 B CN102478993 B CN 102478993B
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Abstract
The invention relates to an electronic device which comprises a touch screen, an integrated circuit and at least one virtual key, wherein the touch screen comprises an insulated substrate and a first conducting layer arranged on one surface of the insulated substrate; and the first conducting layer is arranged on the surface, corresponding to a touch control region, of the insulated substrate and is electrically connected between the integrated circuit and the at least one virtual key.
Description
Technical field
The present invention relates to a kind of electronic installation, relate in particular to a kind of electronic installation with touch-screen and virtual key.
Background technology
In recent years, along with high performance and the diversified development of the various electronic installations such as mobile phone and touch navigation system, the electronic installation that the touch-screen of light transmission is installed in viewing area increases gradually.But, some function keys as switching on and shutting down button still the mode by entity key be arranged on as described on the fuselage cover of electronic installation, thereby the touch that has affected the sealing of this electronic installation and reduced user is experienced.For this reason, some electronic installations only arrange in the user oriented side in its touch-control interface pattern or the sign that represents this function key, at this touch-control interface, user's a side arranges a virtual key corresponding with this function key (Virtual Key), the touch action of using this virtual key sensing user to act on pattern or be marked with dorsad.
Described virtual key is arranged on a flexible PCB and by an integrated circuit (Integrated Circuit) and drives and this virtual key of sensing.Conventionally, described virtual key is separately positioned on described touch-screen along the relative both sides of first direction with integrated circuit, and drives wire and one group of sensing wire to join by one group.Yet described one group drives wire and one group of sensing wire to need cabling space and designs accordingly and the engineering such as assembling, is unfavorable for the design space utilization factor of electronic installation and increases manufacturing cost.
Summary of the invention
In view of this, necessaryly provide a kind of electronic installation simple in structure.
An electronic installation, it comprises a touch-screen, an integrated circuit and at least one virtual key.Described touch-screen comprises a dielectric base and is arranged on one first conductive layer on described dielectric base one surface, and described the first conductive layer is arranged on the surface of the corresponding touch area of described dielectric base.Described the first conductive layer is connected electrically between described integrated circuit and described at least one virtual key.
An electronic installation, it comprises that a touch-screen, an integrated circuit, a virtual key and drive wire.Described touch-screen has the touch area of a sensing touch action, and described the first conductive layer is arranged on the surface of the corresponding touch area of described dielectric base.Described integrated circuit is arranged on described touch-screen along one end of first direction.Described virtual key is arranged on described touch-screen along the other end of first direction.This driving wire is connected electrically between described integrated circuit and virtual key, and the driving signal that this integrated circuit is sent is transferred to described virtual key.Described the first conductive layer is connected electrically between described integrated circuit and virtual key, and the sensing signal that this virtual key is sent is transferred to described integrated circuit.
Compare with the touch-screen of prior art, the described integrated circuit of connection in electronic installation provided by the invention and the sensing wire of virtual key substitute with the conductive path that is arranged on described first conductive layer of described touch area.Thereby, described sensing wire need to be additionally set between described integrated circuit and virtual key.Simplify the structure of described electronic installation, save the design space of described electronic installation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the electronic installation of the embodiment of the present invention.
Fig. 2 is the structural representation of the touch-screen in electronic installation in Fig. 1.
Fig. 3 is structural representation when the first conductive layer in touch-screen is connected with sensing electrode in Fig. 2.
Fig. 4 is that a flexible PCB is along the structural representation of a direction.
Fig. 5 is that flexible PCB in Fig. 4 is along the structural representation of another direction.
Fig. 6 is the circuit connection diagram of the electronic installation in Fig. 1.
Main element symbol description
Electronic installation 100
Touch-screen 10
Touch area 101
Cabling region 102
Dielectric base 11
The first conductive layer 12
Conductive path 121
The second conductive layer 13
Sensing electrode 14
Drive electrode 15
Integrated circuit 20
Driving circuit 21
Sensing circuit 22
Control circuit 23
Flexible PCB 30
Flexible PCB 31
Virtual key 32
The 3rd conductive layer 321
The 4th conductive layer 322
Driving signal input 33
Drive wire 331
Sensing signal output terminal 34
Embodiment
The invention provides a kind of electronic installation, this electronic installation comprises a touch-screen, an integrated circuit and at least one virtual key (Virtual Key).Described integrated circuit is arranged on virtual key the both sides that described touch-screen is relative.
The conductive layer that described touch-screen comprises a dielectric base and is arranged on described dielectric base one surface.Described touch-screen has a touch area, and described conductive layer is arranged on the surface of the corresponding touch area of dielectric base.Described conductive layer is connected electrically between described integrated circuit and virtual key, and the sensing signal that this virtual key is sent is transferred to described integrated circuit.
Described dielectric base is transparent insulation material, tygon (Polyethylene for example, PE), polycarbonate (Polycarbonate, PC), poly terephthalic acid diethylester (Polyethylene Terephthalate, PET), polymethylmethacrylate (PolyMethyl MethAcrylate, PMMA), the glass of optical cement (Optical Clear Adhesive, OCA) or thinning.
Described conductive layer can have the same tropism of resistance (Isotropy Impedance), also can have resistance anisotropy (Anisotropic Impedance).So-called resistance refers to that with tropism described conductive layer is substantially equal along the resistance of all directions that is parallel to this conductive layer.And so-called resistance anisotropy refers to that described conductive layer is along the resistance of a direction that is parallel to this conductive layer much larger than the resistance that is parallel to another direction of this conductive layer.For example at this conductive layer, at the ratio along being parallel to the resistance on the vertical both direction of this conductive layer, can be greater than 100.Whether described conductive layer can need single-point type or multipoint mode to select according to touch-screen, so-called single-point type is the position that touch-screen can only be identified a touch point simultaneously, and so-called multipoint mode is the position that touch-screen can be identified two or more touch points simultaneously.Such as, the conductive layer of above-mentioned resistive touch screen and capacitive touch screen, if resistance during with tropism, this touch-screen is single-point type touch-screen, if this touch-screen is multi-point touch screen during resistance anisotropy.When described touch-screen is resistive touch screen, it comprises two described dielectric base relative spacing setting and is separately positioned on two dielectric base, two conductive layers of the corresponding touch area on surface in opposite directions.When described touch-screen is capacitive touch screen, it can arrange a conductive layer in the corresponding touch area, a surface of described dielectric base, and relative two surfaces that also can described dielectric base arrange a conductive layer in corresponding touch area respectively.
So-called conductive layer has resistance anisotropy and refers to, conductive layer all exists two orthogonal directions, and in a direction therein, the resistance of this conductive layer is far longer than the resistance in another one direction.The described structure with the anisotropic conductive layer of resistance comprises two kinds: a kind of is the conductive path that this conductive layer comprises a plurality of wire of extending along a direction; To be this conductive layer have by a plurality of that the anisotropic material of conduction forms and this material aligns to another kind.Take indium oxide tin film as example, a complete indium oxide tin film can be carried out to patterning, form the little tin indium oxide conductive path of a plurality of wire of extension in the same direction and space setting.The conductive layer forming for this indium oxide tin film, the direction of extending along tin indium oxide conductive path is the direction of conduction.Owing to being spaced between tin indium oxide conductive path, so mutually insulated between tin indium oxide conductive path.Therefore, this indium oxide tin film can be described as and has resistance anisotropy.Take carbon nano-tube film as example, can form the little carbon nano-tube film of a plurality of wire of a plurality of extensions in the same direction and space setting by a complete carbon nano-tube film is carried out to patterning, thereby form, there is the anisotropic carbon nano-tube film of resistance.In addition, because carbon nano-tube has extraordinary conduction anisotropy, it has extraordinary electric conductivity in the axial direction, and be almost insulator in direction perpendicular to axial direction (being the diametric(al) of carbon nano-tube), therefore can select to make a carbon nano-tube in complete carbon nano-tube film substantially to align, thereby the carbon nano-tube of described carbon nano-tube film has good electric conductivity in the axial direction of carbon nano-tube, and poor perpendicular to the electric conductivity on carbon nano-tube axial direction, and then formation has the anisotropic carbon nano-tube film of resistance.
The emphasis of touch-screen of the present invention is that the signal of realizing described integrated circuit and virtual key by the conductive layer of touch area transmits, thereby can save space and the cost that needs to arrange separately wire and cabling region in prior art.Therefore known according to foregoing, if when the conductive layer that integrated circuit is electrically connected to virtual key is isotropy, virtual key can only arrange at most one and virtual key and be connected with conductive layer opposite end respectively with integrated circuit, if this conductive layer can arrange a plurality of virtual keys when incorgruous for each, and the plurality of virtual key and integrated circuit are separately positioned on to conductive layer along the two ends of conducting direction, are also connected.Known according to foregoing, those skilled in the art illustrate for each technology contents during to anisotropy at the above-mentioned conductive layer of the present invention clearly on basis, conductive layer can be readily appreciated that for each technology contents during to same tropism, so this instructions be take the technology contents of conductive layer during as each to anisotropy and is attached most importance to illustrate the present invention.
Described touch-screen comprises and is separately positioned on two dielectric base, two conductive layers of corresponding touch area on surface in opposite directions, hereinafter referred to as the first conductive layer and the second conductive layer.Described the first conductive layer or the second conductive layer can be metal film, tin indium oxide (Indium Tin Oxide, ITO) film or carbon nano-tube film.
For convenience of description, the minimum resistance direction that defines described the first conductive layer is first direction, and the maximum resistance direction of definition the first conductive layer is second direction, and described first direction is perpendicular to second direction.The minimum resistance direction of described the second conductive layer is second direction, and the maximum resistance direction of described the second conductive layer is first direction.That is, make the minimum resistance direction of described the first conductive layer perpendicular to the minimum resistance direction of the second conductive layer, thereby form a capacitive touch screen.In electronic installation of the present invention, described the first conductive layer comprises that a plurality of wire conductive paths extend along first direction, as metal tape, tin indium oxide band or carbon nano-tube band.Described the second conductive layer can comprise that a plurality of wire conductive paths extend along second direction, also can be for having the whole conducting film that forms of the anisotropic material of conduction by a plurality of.
Described integrated circuit comprises one drive circuit, a sensing circuit and a control circuit.Described control circuit electrically connects with described driving circuit and sensing circuit respectively.Described driving circuit is electrically connected to described virtual key by a driving wire.Described sensing circuit is electrically connected to described virtual key by described the first conductive layer.Particularly, for realizing sensing circuit and described virtual key electrically connects, described sensing circuit and described the first conductive layer couple along one end of first direction, described virtual key and described the first conductive layer couple along the other end of first direction, that is, described sensing circuit and virtual key couple with the two ends of described the first conductive layer along conducting direction respectively.
When work, described control circuit is controlled described driving circuit and is sent a driving signal to described virtual key, and receive the sensing signal that this virtual key transmits simultaneously, thereby judge whether to act on the touch action on this virtual key according to described sensing signal.Because described sensing circuit electrically connects by described conductive layer and the described virtual key that is arranged on the corresponding touch area of dielectric base, thereby a sensing wire need to be set between virtual key and sensing circuit, simplify the structure of described electronic installation.That is, described conductive layer can be used as being connected electrically in the sensing wire between described sensing circuit and virtual key, for transmitting the sensing signal of described virtual key.
Due to this function element as touch-screen of described conductive layer, described the first conductive layer, except being described virtual key transmission sensing signal, is also described touch-screen work.It is pointed out that as guaranteeing that described virtual key and described touch-screen do not conflict when using the first conductive layer, must guarantee to be only chosen as described touch-screen in described the first conductive layer at one time or be only described virtual key work.Specifically how to control different and different according to the principle of work of touch-screen.For example, if when described touch-screen is individual layer capacitive touch screen, when described virtual key is in when work, described touch-screen must be in off working state, and the number of described virtual key can only be also one.If described touch-screen is multiple spot capacitive touch screen, when described virtual key is when working, the connection virtual key in described touch-screen and the conductive layer of sensing circuit can not load driver signals.If described touch-screen is resistive touch screen, when described virtual key is when working, described touch-screen must be in off working state.But in conjunction with actual, can know, while pressing virtual key, touch area, generally in non-touch duty, or can be designed as the work of virtual key and the work of touch area replaces automatically, so the realistic request for utilization of the present invention.Certainly, the present invention also can described each to the conductive path of choosing in anisotropy conductive layer with virtual key quantity respective amount, as the independent conductive path being electrically connected to integrated circuit for virtual key, the conductive path of i.e. this selection is not connected with the electrode arranging on conductive layer, in order to know referred to herein as special-purpose conductive path, the problem that does not now exist the work of touch area and the work of virtual key simultaneously not to carry out.For more realistic demand, while selecting above-mentioned special-purpose conductive path, can select according to the low position of the demand that is touched in touch-screen touch area.
Described virtual key can be arranged on a flexible PCB, and by the mechanical connection of described flexible PCB and the first conductive layer.The concrete structure of described virtual key is not limit, as long as can sensing user finger or the touch action of other instrumental purpose on virtual key.Normally, described virtual key is for arranging or be formed on the Inductance and Capacitance of described flexible PCB.Described Inductance and Capacitance can comprise and is arranged on two one the 3rd surperficial conductive layers and one the 4th conductive layer that described flexible PCB is relative.Described the 3rd conductive layer and the 4th conductive layer are space crossed, thereby form a plurality of Inductance and Capacitance Coupling nodes between the 3rd conductive layer and the 4th conductive layer.When described virtual key receives a driving signal, between described the 3rd conductive layer and the 4th conductive layer, will produce a plurality of electric capacity, the capacitance of described electric capacity is sensing signal.Described control circuit, by the capacitance variation of this virtual key of sensing, can act on the touch action on this virtual key by sensing, obtains touch position coordinates comparatively accurately.
Take multiple spot capacitive touch screen below as example, further describe electronic installation of the present invention by reference to the accompanying drawings and with specific embodiment.
Refer to Fig. 1, the embodiment of the present invention provides a kind of electronic installation 100, and this electronic installation 100 comprises a touch-screen 10, an integrated circuit 20 and a flexible PCB (Flexible Printed Circuit) 30.Described integrated circuit 20 and flexible PCB 30 are arranged on described touch-screen 10 along the both sides of a first direction.
See also Fig. 1 and Fig. 2, described touch-screen 10 comprises a dielectric base 11, is arranged on a touch area 101 and a cabling region 102 of described dielectric base 11.Described cabling region 102 is arranged on the edge of described touch area 101.In described touch area 101, be provided with one first conductive layer 12, one second conductive layer 13, a plurality of sensing electrode 14 and a plurality of drive electrode 15.Described the first conductive layer 12 and the second conductive layer 13 are separately positioned on two relative surfaces of described dielectric base 11.Described sensing electrode 14 is arranged on described the first conductive layer 12 along one end of first direction, and described drive electrode 15 is arranged on described the second conductive layer 13 along one end of a second direction.Described first direction is perpendicular to described second direction.
Described dielectric base 11 is a planar structure, mainly plays a supportive role, and should have good light transmission.The flexible materials such as this dielectric base 11 can be by hard material or plastics such as glass, quartz, adamass, resin form.Particularly, when this dielectric base 11 is formed by a flexible material, this material can be the polyester materials such as polycarbonate (PC), polymethylmethacrylate (PMMA), polyethylene terephthalate (PET), and the material such as polyethersulfone (PES), cellulose esters, benzocyclobutene (BCB), Polyvinylchloride (PVC), optical cement (Optical Clear Adhesive, OCA) and acryl resin.In the present embodiment, the material of this dielectric base 11 is optical cement.Be appreciated that the material that forms described dielectric base 11 is not limited to the above-mentioned material of enumerating, as long as can make dielectric base 11 play the effect of support, and the good transparency of tool, all in the scope of protection of the invention.
Described the first conductive layer 12 or the second conductive layer 13 can be metal film, tin indium oxide (Indium Tin Oxide, ITO) film or carbon nano-tube film.
Refer to Fig. 3, described the first conductive layer 12 comprises along a plurality of linear conductive path 121 of the extension of first direction, and the parallel and interval of described a plurality of wire conductive paths 121 arranges.Each conductive path 121 forms a reticulate texture through patterned process at described the first conductive layer 12, conductive path 121 mutual conduction in described reticulate texture and be " * " font and arrange.Described conductive path 121 can be made by any conductive material, as long as keep transparent and be linear structure.Described conductive material comprises carbon nano-tube, metal, metallic compound.In the present embodiment, described conductive material is tin indium oxide.
Described the second conductive layer 13 comprises a plurality ofly having the anisotropic carbon nano-tube of good conductive, and the plurality of carbon nano-tube is extended along second direction substantially.Described the second conductive layer 13 can comprise a carbon nano-tube film, this carbon nano-tube film aligns formation substantially for pull a plurality of carbon nano-tube of having of acquisition from super in-line arrangement carbon nano pipe array, described a plurality of carbon nano-tube ending is connected with Van der Waals force and mutually combines, thereby form one, has integrally-built carbon nano-tube film.Because carbon nano-tube has very large length-diameter ratio, and carbon nano-tube has extraordinary conduction anisotropy, it has extraordinary electric conductivity in the axial direction, and be almost insulator in direction perpendicular to axial direction (being the diametric(al) of carbon nano-tube), thereby in the direction that the carbon nano-tube film of described carbon nano-tube film extends in carbon nano-tube, there is good electric conductivity, and very poor perpendicular to the electric conductivity on carbon nano-tube bearing of trend.Therefore, this carbon nano-tube film has resistance anisotropy.
The formed structure of conductive path 121 in described the first conductive layer 12 is reticulate texture, the space crossed setting of carbon nano-tube in this conductive path 121 and the second conductive layer 13, can reduce the overlapping area between this conductive path 121 and carbon nano-tube as far as possible, thereby reduce the unit-area capacitance of this touch-screen 10.The dielectric base 11 adopting during due to this touch-screen 10 of manufacture often has thinner thickness, so these touch-screen 10 unit-area capacitances are often larger.Therefore, can, by making 121 one-tenth linear structures of conductive path in this first conductive layer 12 and arranged in a crossed manner with the carbon nano-tube in described the second conductive layer 13, reduce the unit-area capacitance of this touch-screen 10.
Described a plurality of sensing electrode 14 is arranged on described the first conductive layer 12 and is electrically connected to described a plurality of conductive paths 121 along one end of first direction, for the sensing signal that described the first conductive layer 12 is transmitted from conductive path 121, be transferred to described integrated circuit 20, now, described the first conductive layer 12 is monolateral driving.Described sensing electrode 14 also can also be arranged on described the first conductive layer 12 along the relative two ends of first direction, and the two ends of each conductive path 121 are provided with sensing electrode, and now, described the first conductive layer 12 is bilateral driving.
Described drive electrode 15 is arranged on described the second conductive layer 13 along one end of second direction, for the driving signal sending from described integrated circuit 20 is sent to described the second conductive layer 13, now, the monolateral driving of described the first conductive layer 12.Described drive electrode 15 also can be arranged on described the second conductive layer 13 along the opposite end of second direction, and now, described the second conductive layer 13 is bilateral driving.
Described touch-screen 10 is when work, and described the second conductive layer 13 receives described driving signal, thereby forms a plurality of electric capacity between described the second conductive layer 13 and the first conductive layer 12.In described the first conductive layer 12, between each conductive path 121 and described the second conductive layer 13, be all formed with electric capacity.Described the first conductive layer 12 sends the capacitance of described electric capacity to described integrated circuit 20 by described sensing electrode 14, and described capacitance is sensing signal.When user touches this touch-screen 10, described integrated circuit 20, by the capacitance of electric capacity or the change of capacitance between this first conductive path 121 of sensing and described the second conductive layer 13, can be oriented this user's touch point.
Described integrated circuit 20 comprises one drive circuit 21, a sensing circuit 22 and a control circuit 23.Described control circuit 23 electrically connects with described driving circuit 21 and sensing circuit 22 respectively.Described driving circuit 21 is electrically connected to described flexible PCB 30.Described sensing circuit 22 is electrically connected to described flexible PCB 30 by described the first conductive layer 12.Particularly, for realizing being electrically connected to of sensing circuit 22 and described flexible PCB 30, described sensing circuit 22 couples with one end coupling of described the first conductive layer 12 along first direction, described flexible PCB 30 couples with the other end of described the first conductive layer 12 along first direction, that is, described sensing circuit and flexible PCB 30 couple with the two ends of described the first conductive layer 12 along conducting direction respectively.
Please also refer to Fig. 1, Fig. 4 and Fig. 5, described flexible PCB 30 comprises a flexible PCB 31, a plurality of virtual key 32, a driving signal input 33 and a plurality of sensing signal output terminal 34.Described virtual key 32, driving signal input 33 and sensing signal output terminal 34 are all arranged on described flexible PCB 31.Described virtual key 32, by described flexible PCB 31 and described touch-screen 10 mechanical connections, is electrically connected to described driving circuit 21 signals by driving signal input 33, by described sensing signal output terminal 34, electrically connects with described the first conductive layer 12.Because described driving signal input 33 and driving circuit 21 are separately positioned on the two ends of described touch-screen 10, therefore, for realizing described driving signal input 33, be electrically connected to driving circuit 21, one drives wire 331 can be connected between described driving signal input 33 and driving circuit 21.This driving wire 331 is arranged on described cabling region 102.Each sensing signal output terminal 34 is all electrically connected to the one or more conductive paths 121 in described the first conductive layer 12, thereby described sensing signal output terminal 34 can be electrically connected with described sensing circuit 22.Be appreciated that, owing to being connected by described conductive path 121 and the sensing electrode 14 that is connected with conductive path 121 between described sensing signal output terminal 34 and sensing circuit 22, therefore, without described sensing signal output terminal 34 can and described sensing circuit 22 between a sensing wire is set again, can realize described sensing signal is transferred to sensing circuit 22 from virtual key 32.Meanwhile, because traditional sensing wire all needs to be arranged on described cabling region 102, and described the first conductive layer 12 of virtual key 32 use in the present embodiment is as sensing wire, has omitted in other words the sensing wire being arranged on described cabling region 102.Therefore, the electronic installation 100 of the present embodiment, with respect to traditional electronic installation, can reduce the area in described cabling region 102, is conducive to the miniaturization of described electronic installation 100.
The material of this flexible PCB 31 can be selected from plastics or resin, and thickness is 10 microns to 70 microns, is preferably 20 microns.Shape and the size of this flexible PCB 31 are not limit, can be according to size and the shape design of the virtual key 32 needing in described electronic equipment.
Described a plurality of virtual key 32 can be a plurality of Inductance and Capacitance, particularly, described a plurality of virtual key 32 comprises a plurality of the 3rd conductive layers 321 and one the 4th conductive layer 322, and described a plurality of the 3rd conductive layers 321 are arranged on the 4th conductive layer 322 two surfaces that described flexible PCB 31 is relative.Each virtual key 32 is all to there being the 3rd conductive layer 321.Described a plurality of the 3rd conductive layer 321 capable assemblings form the shape basic corresponding with described the 4th conductive layer 322, and space insulation between the plurality of the 3rd conductive layer 321.Described the 4th conductive layer 322 is electrically connected to described driving signal input 33, and each the 3rd conductive layer 321 all electrically connects with a sensing signal output terminal 34.The structure that is appreciated that described a plurality of virtual key 32 is not limited to above-mentioned situation, as long as can form a plurality of Inductance and Capacitance.For example, in order to form a plurality of Inductance and Capacitance, described a plurality of virtual keys 32 also can comprise a plurality of the 3rd conductive layers 321 and a plurality of the 4th conductive layer 322, that is, each virtual key 32 is all to having one the 3rd conductive layer 321 and one the 4th conductive layer 322.
Described the 3rd conductive layer 321 and the 4th conductive layer 322 can be by modes such as printing or plated film etchings and form, and the material of described the 3rd conductive layer 321 and the 4th conductive layer 322 is the metal with better electric conductivity, as gold, silver or copper.In the present embodiment, described the 3rd conductive layer 321 and the 4th conductive layer 322 are the metal wire being printed on described flexible PCB 31.Refer to Fig. 5 and Fig. 6, the metal wire mutual conduction in described the 3rd conductive layer 321 and be matrix pattern and arrange.Metal wire mutual conduction in described the 4th conductive layer 322 and be " * " font and arrange.Metal wire in described the 3rd conductive layer 321 has different directions from the metal wire in the 4th conductive layer 322, thereby intersects by described flexible PCB 31 insulation union spaces, thereby forms described a plurality of capacitive coupling node.
Described driving signal input 33 is arranged on described flexible PCB 31, and electrically connects between described driving circuit 21 and described the 4th conductive layer 322.Described driving signal input 33 is input to the 4th conductive layer 322 for the driving signal that driving circuit 21 is sent, thereby between described the 3rd conductive layer 321 and the 4th conductive layer 322, will produce an electric capacity, the capacitance of described electric capacity is sensing signal.Described sensing signal output terminal 34 is arranged on described flexible PCB 31, and electrically connects between described the first conductive layer 12 and described the 3rd conductive layer 321.Described sensing signal output terminal 34 is for the sensing signal of described the 3rd conductive layer 321 being transferred to described the first conductive layer 12, and finally by this first conductive layer 12, is transferred to described sensing circuit 22.Thereby described control circuit 23 can act on by the capacitance variation sensing of a plurality of capacitive coupling nodes described in sensing the touch action on this virtual key 32.
Referring to Fig. 6, is the annexation schematic diagram of described electronic installation 100, and the drive electrode 15 in described touch-screen 10 and the driving signal input 33 in described virtual key 32 are all connected with 21 of driving circuits in described integrated circuit 20.14 of sensing electrodes in described touch-screen 10 electrically connect with the sensing circuit 22 in described integrated circuit 20.Because sensing signal output terminal 34 in described virtual key 32 is electrically connected to described the first conductive layer 12, therefore, described sensing signal output terminal 34 in fact also electrically connects with described sensing circuit 22.
Described electronic installation 100 is when work, and the described driving circuit 21 of described control circuit 23 control can pass through the mode of Time share scanning line by line and to described drive electrode 15 and driving signal input 33 transmissions, drive signal successively.When described drive electrode 15 receives this driving signal, described touch-screen 10 work, and the sensing signal in this first conductive layer 12 is transferred to described sensing circuit 22 by sensing electrode 14.When described driving signal input 33 receives this driving signal, described a plurality of virtual key 32 work, and the sensing signal of the plurality of virtual key 32 is transferred to described sensing circuit 22 by described sensing signal output terminal 34 via described the first conductive layer 12 and sensing electrode 14.Because described virtual key 32 is different with the working time of touch-screen 10, therefore, the sensing signal of described virtual key 32 can be transferred to described sensing circuit 22 by the first conductive layer 12, and do not need additionally to arrange sensing wire, is not connected between described virtual key 32 and sensing circuit 22 again.Be conducive to simplify the structure of described electronic installation 100, save the space of described electronic installation 100.Meanwhile, shared described the 4th conductive layer 322 of a plurality of virtual keys 32 due to described electronic installation 100, can reduce the number of described driving signal input 33, and then reduce the quantity that connects the driving wire 331 between described driving circuit 21 and virtual key 32.Can further simplify the structure of described electronic installation 100, save the space of described electronic installation 100.
Described electronic installation 100 also can further comprise a touch interface (not shown), described touch interface is arranged on described virtual key 32 away from a side of described flexible PCB 30, and the position that described touch interface is corresponding with described virtual key 32 is provided with pattern or sign.
In addition, those skilled in the art also can do other and change in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention, within all should being included in the present invention's scope required for protection.
Claims (16)
1. an electronic installation, it comprises:
One touch-screen, described touch-screen comprises a dielectric base and is arranged on one first conductive layer on described dielectric base one surface, and described touch-screen has a touch area, and described the first conductive layer is arranged on the surface of the corresponding touch area of described dielectric base;
One integrated circuit; And
At least one virtual key, receives the driving signal that described integrated circuit sends;
It is characterized in that, described the first conductive layer is connected electrically between described integrated circuit and described at least one virtual key, and the sensing signal that this virtual key is sent is transferred to described integrated circuit.
2. electronic installation as claimed in claim 1, is characterized in that, described the first conductive layer has the same tropism of resistance.
3. electronic installation as claimed in claim 1, it is characterized in that, described the first conductive layer has conduction anisotropy, and this first conductive layer has minimum resistance along a first direction, and described integrated circuit and virtual key are separately positioned on described touch-screen along the two ends of first direction.
4. electronic installation as claimed in claim 3, is characterized in that, described the first conductive layer comprises a plurality of conductive paths that extend along first direction.
5. electronic installation as claimed in claim 2 or claim 3, it is characterized in that, in described touch area, be further provided with one second conductive layer, described the second conductive layer is arranged on two relative surfaces of described dielectric base with the first conductive layer, and described the second conductive layer has the same tropism of resistance.
6. electronic installation as claimed in claim 2 or claim 3, it is characterized in that, in described touch area, be further provided with one second conductive layer, described the second conductive layer is arranged on two relative surfaces of described dielectric base with the first conductive layer, described the second conductive layer has resistance anisotropy, and this second conductive layer has minimum resistance along a second direction.
7. electronic installation as claimed in claim 6, is characterized in that, described the second conductive layer comprises at least one carbon nano-tube film, and described carbon nano-tube film comprises a plurality of carbon nano-tube, axially substantially the extending along second direction of the plurality of carbon nano-tube.
8. electronic installation as claimed in claim 7, is characterized in that, in described carbon nano-tube film, a plurality of carbon nano-tube join end to end by Van der Waals force, and substantially along second direction preferred orientation, extends.
9. electronic installation as claimed in claim 1, it is characterized in that, described electronic installation further comprises that a driving signal input and drives wire, described driving wire is connected between described driving signal input and described integrated circuit, and described driving signal input is connected between described driving wire and described virtual key.
10. electronic installation as claimed in claim 9, is characterized in that, described electronic installation further comprises at least one sensing signal output terminal, and described at least one sensing signal output terminal is connected between described the first conductive layer and described at least one virtual key.
11. electronic installations as claimed in claim 10, it is characterized in that, described electronic installation further comprises a flexible PCB, and described at least one virtual key, driving signal input and at least one sensing signal output terminal are all arranged on described flexible PCB.
12. electronic installations as claimed in claim 11, it is characterized in that, described at least one virtual key comprises having anisotropic at least one the 3rd conductive layer of resistance and have resistance anisotropic 1 the 4th conductive layer, described at least one the 3rd conductive layer and one the 4th conductive layer are separately positioned on two surfaces that described flexible PCB is relative, described at least one the 3rd conductive layer is electrically connected to described at least one sensing signal output terminal, and described the 4th conductive layer is electrically connected to described driving signal input.
13. electronic installations as claimed in claim 12, is characterized in that, described at least one the 3rd conductive layer is a reticulate texture being formed by many conductor wires, and described the 4th conductive layer comprises a reticulate texture being formed by many conductor wires.
14. electronic installations as claimed in claim 11, is characterized in that, described at least one virtual key comprises that at least one the 3rd conductive layer and at least one the 4th conductive layer are arranged on two surfaces that described flexible PCB is relative.
15. 1 kinds of electronic installations, it comprises:
One touch-screen, described touch-screen comprises a dielectric base and is arranged on one first conductive layer on described dielectric base one surface, described touch-screen has the touch area of a sensing touch action, and described the first conductive layer is arranged on the surface of the corresponding touch area of described dielectric base;
One integrated circuit, described integrated circuit is arranged on described touch-screen along one end of first direction;
One virtual key, described virtual key is arranged on described touch-screen along the other end of first direction; And
One drives wire, and this driving wire is connected electrically between described integrated circuit and virtual key, and the driving signal that this integrated circuit is sent is transferred to described virtual key;
It is characterized in that, described the first conductive layer is connected electrically between described integrated circuit and virtual key, and the sensing signal that this virtual key is sent is transferred to described integrated circuit.
16. electronic installations as claimed in claim 15, is characterized in that, described virtual key is only transferred to described sensing signal the other end of this touch-screen from one end of touch-screen by described the first conductive layer.
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| CN201010573849.XA CN102478993B (en) | 2010-11-26 | 2010-11-26 | Electronic device |
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| CN201010573849.XA CN102478993B (en) | 2010-11-26 | 2010-11-26 | Electronic device |
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| CN102478993A CN102478993A (en) | 2012-05-30 |
| CN102478993B true CN102478993B (en) | 2014-11-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI459263B (en) * | 2012-07-30 | 2014-11-01 | Au Optronics Corp | Touch device |
| TWM472253U (en) * | 2013-10-31 | 2014-02-11 | Wintek Corp | Touch panel |
| CN108037855A (en) * | 2018-01-25 | 2018-05-15 | 上海创功通讯技术有限公司 | A kind of display panel and terminal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261559A (en) * | 2007-03-07 | 2008-09-10 | 义隆电子股份有限公司 | Touch control panel |
| CN101458601A (en) * | 2007-12-14 | 2009-06-17 | 清华大学 | Touch screen and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7829812B2 (en) * | 2007-07-03 | 2010-11-09 | Sony Ericsson Mobile Communications Ab | Input device and an electronic device comprising an input device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261559A (en) * | 2007-03-07 | 2008-09-10 | 义隆电子股份有限公司 | Touch control panel |
| CN101458601A (en) * | 2007-12-14 | 2009-06-17 | 清华大学 | Touch screen and display device |
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Address after: 518109 Guangdong, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 4, building 1, building Applicant after: Qunkang Technology (Shenzhen) Co., Ltd. Co-applicant after: Chimei Optoelectronics Co., Ltd. Address before: Miaoli County, Taiwan, China Applicant before: Chimei Optoelectronics Co., Ltd. Co-applicant before: Qunkang Technology (Shenzhen) Co., Ltd. |
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Address after: 518109 Guangdong, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 4, building 1, building Applicant after: Qunkang Technology (Shenzhen) Co., Ltd. Applicant after: Innolux Display Group Address before: 518109 Guangdong, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 4, building 1, building Applicant before: Qunkang Technology (Shenzhen) Co., Ltd. Applicant before: Chimei Optoelectronics Co., Ltd. |
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