Increase the method and the device of its detection rightness of contact-controllable detector
Affiliated technical field
The present invention relates to a kind of method and device of its detection rightness of increase contact-controllable detector, refer to especially a kind of when on Trackpad, doing the contact, on detector, produce more accurate X, Y-axis to the equipotential line signal coordinates.
Background technology
See also shown in the accompanying drawing 7, known contact-controllable detector is on the surface of transparent or semitransparent substrate A, evenly the thin conductive film B (being the ITO layer) of coated one deck; One rectangular conductive material C (as silver slurry line) is printed in the rim all around of conductive film B, form linear pattern, four lead W1, W2, W3, W4 are connected in four corners of conductive material C, and therein two corner C2, C4 impose suitable to voltage, two corner C1, C3 impose on the voltage of OV in addition, are form electric field on conductive film B surface; The impedance (or electric conductivity) of conductive material C at this moment just, the homogeneity that will depend on conductive film B surface field, conductive material C for example, if be high conductivity, all electric currents conductive material C that can flow through then, only little part can flow to conductive film B (1TO layer) intermediate surface zone, make the contact region that is subjected to of conductive film B be difficult to detecting because of voltage is too faint, so at the defined X of conductive film B surface field, Y uranium to equipotential line S be sweeping arc, conductive bit S such as this arc are distributed on the surface contact zone of conductive film B, when this zone is subjected to the contact, the X that is produced, Y-axis to voltage signal just incorrect, so it is just incorrect to be presented on the position that slider position on the display and contact click.Given this shortcoming, general improved mode is the equipment that sees through the outside, corrects equipotential line as potential divider or software, and the pressure-wire S such as arc of its X, Y-axis can be straightened.But in fact must increase the equipotential line S that potential divider or soft design improve arc and will increase suitable cost.
So, the inventor once tested conductive material C was substituted with the low electric conductivity material of higher resistance, this design still produces some shortcomings, promptly, always be higher than the terminal voltage of four corner C1, C2, C3, C4 between the voltage of every adjacent corner (C3, C1) zone line or corner C1-C2 zone line or corner C2-C3 zone line or corner C3-C4 zone line; With regard to the equipotential line of electric field, be in certain some zone or be non-rectilinear and be crooked, so the inaccurate situation of voltage coordinate signal that some zone, conductive film B surface was produced when being subjected to the contact takes place equally.
At above-mentioned defective, the 4661 No. 655 patent case of US, improved with regard to the arc equipotential line that detector surface produced, it is to utilize electrode material, in single discontinuous mode of not piling up, be printed on the lip-deep rim all around of conductive film, make every row's electrode material increase impedance, on electrode material, increase impedance, though the compensation of part arc equipotential line slightly can be improved, but can't effectively reduce the distribution scenario of arc equipotential line, thereby the application of this patent case need rely on extra hardware and software to be revised to reach linear purpose.
No. 4797514 patent case of US, its main device is to print rectangular box-like conductive material (being resistive material) at a transparent or semitransparent substrate surface, this conductive material is continuity;
Layer of conductive film (or resistive layer) is printed in the surface of substrate, conductive material is between the lower surface of conductive film, its principal character is that the corner inner side edge is done etching around conductive film, make the insulating regions that is plural number, form the resistance electrode element between every adjacent insulating regions, when electric current is flowed through between the resistance electrode element, can be listed as plural insulating regions to each other at this, produce certain voltage gradient, this effective voltage gradient can be offseted (or compensation) voltage drop that conductive material produced, further make conductive material produce voltage drop, the equipotential line of the bending that is caused is proofreaied and correct and is straight line.
The shortcoming of this case is to be continuity at conductive material, when therefore the corner contact is transfused to appropriate voltage, the voltage drop ratio that is produced between its every adjacent corner is quite big, depending merely on single insulator region and resistance electrode, to reduce voltage drop be not enough, in other words, rim around its effective Touch Zone of inductor still can produce the equipotential line of bending arc shape greatly, and active region is needed apart from the wiring region certain distance, to avoid the offset phenomenon that bending arc shape equipotential effect causes.
Summary of the invention
Purpose of the present invention aims to provide a kind of method and device of its detection rightness of increase contact-controllable detector, by resistive element or conducting element, be printed in conductive film surface rim all around in discontinuous mode, the voltage difference or the voltage gradient that can tentatively reduce resistive element and produced, tentatively slow down with the flexibility that makes every row's equipotential line that resistive element is produced, and insulator region and both effects of clearance component of borrowing plural number row to be distributed in the resistive element inboard, can more effective the aforementioned crooked equipotential line of tentatively having been proofreaied and correct be proofreaied and correct again and be straight line.
The object of the present invention is achieved like this: this device has substrate, lead, conductive film and conductive material, and a transparent or semitransparent substrate is arranged; One conductive film is with the very narrow thickness coated or is printed in the upper surface of substrate; One by resistive element group that conductive material constituted, with more than at least one row and discontinuous mode be printed in the upper surface surrounding of conductive film, wherein the individual resistors element near angle of cut position, every corner is connected, has wire joining, wherein every row independently between resistive element, all has clearance component; One near on the conductive film surface of resistive element inboard, and conductive film is partly left out or etching; Make the part of leaving out, form discontinuous plural insulator element, this plural number insulator element is arranged in the inboard of resistive element with more than at least one row; One group of plural number clearance component is to form between the plural insulator element of every row, to constitute a contact-controllable detector.
A kind of method and device of its detection rightness of increase contact-controllable detector, this method is the surface at substrate, the thin conductive film of even coated one deck, conductive material is printed in the rim all around of conductive film, lead is connected on the voltage contact in its four corner of resistive element group, selecting wherein, two point imposes on suitable cathode voltage, two point imposes on OV voltage or ground connection in addition, the plural resistive element that is positioned on the conductive membrane layer is discontinuous, and the clearance component between whenever adjacent outboard row resistive element can form a resistance area, utilize this resistance area to reduce to flow through every current flow of resistive element separately, make on the conductive film surface and can obtain higher resistance value, to reduce the electric field intensity between per two corner contacts, tentatively reduce the crooked radian of equipotential line; Utilize again and be positioned between the plural insulator element of every row formed clearance component as resistance area, the electric field that wherein utilizes the obstruct of insulator element can make every independently resistive element two ends be produced flows to clearance component, can further effectively revise the equipotential line crooked radian that produces by resistive element and clearance component, make at last its X axis of electric field on the conductive film and Y-axis to equipotential line more be tending towards straight line.
On the method for described its detection rightness of increase contact-controllable detector and the conductive film of device the equipotential line of measured X axis and Y-axis to equipotential line all be tending towards straight line, in the touch-control effective coverage on conductive film, when doing the contact, can obtain X, Y-axis to equal right as rain voltage signals.
The method of described its detection rightness of increase contact-controllable detector and the substrate of device is preferably glass material or flexual plastic material constitutes, conductive film is made of a tin indium oxide material, and resistive element preferably is made of silver slurry wire material.
Row in the middle of between the insulator element zone of the method for described its detection rightness of increase contact-controllable detector and the inboard row of device and the outboard row resistive element zone, be arranged with resistive element and insulator element, wherein to be the L type be good to the insulator in every corner, by formed clearance component, revise this interregional field effect in order to compensation, the arc degree of the equipotential line that resistive element of arranging in the middle of making and insulator element are interregional can further be modified to and be tending towards straight line.
The insulator element zone of the method for described its detection rightness of increase contact-controllable detector and the inboard row of device, the electric field that its plural clearance component further produces this zone plural number is compensated correction, and further the equipotential line that this is regional is modified to and is tending towards straight line.
The invention has the beneficial effects as follows: reduce voltage difference or voltage gradient that resistive element produced, the flexibility of every row's equipotential line that resistive element produces is tentatively slowed down, and borrow plural number row to be distributed in insulator region and both effects of clearance component of resistive element inboard, more effective crooked equipotential line that will tentatively proofreaied and correct is proofreaied and correct and is straight line, so obtain being tending towards linearity X, Y-axis to equipotential line.
Description of drawings
Accompanying drawing 1 is a touch-control sensing apparatus three-dimensional exploded view of the present invention;
Accompanying drawing 2 is sectional schematic diagrams of touch-control sensing apparatus of the present invention;
Accompanying drawing 3 is resistive element and insulator element pattern distribution planimetric maps that touch-control sensor of the present invention is got a corner (about 1/5th sensitive surface zones);
Accompanying drawing 4 is electric loop synoptic diagram of touch-control sensor of the present invention;
Accompanying drawing 5 is that touch-control sensor of the present invention is executed the planimetric map that voltage produces the X axis equipotential line;
Accompanying drawing 6 are touch-control sensors of the present invention by execute Y-axis that voltage produces to the planimetric map of equipotential line;
Accompanying drawing 7 is floor map of known touch-control sensor;
Label declaration in the accompanying drawing
The 10-substrate;
The 20-conductive film;
30,30 '-resistive element;
40,40 '-insulator element;
61,62,63,64-contact;
70,70 ', 50,50 '-clearance component;
The 100-reaction zone;
S, S1-equipotential line;
Embodiment
Describe the details and the working condition of the concrete grammar that proposes according to the present invention in detail below in conjunction with accompanying drawing.
See also shown in the accompanying drawing 1,2,3, apparatus of the present invention have substrate 10, lead, conductive film 20 and conductive material, it is characterized in that: a transparent or semitransparent substrate 10; One conductive film 20 (ITO layer) is with the very narrow thickness coated or is printed in the upper surface of substrate 10; One by resistive element group 30 that conductive material constituted, with more than at least one row and discontinuous mode be printed in the upper surface surrounding of conductive film 20, wherein the individual resistors element 30 near angle of cut position, every corner is connected, has wire joining 61,62,63,64, wherein every row is 30 of resistive elements independently, all have clearance component 70; One near on conductive film 20 surfaces of resistive element 30 inboards, and conductive film 20 is partly left out or etching; Make the part of leaving out, form discontinuous plural insulator element 40, this plural number insulator element 40 is arranged in the inboard of resistive element 30 with more than at least one row; One group of plural number clearance component 50 is to form between the plural insulator element 40 of every row, to constitute a contact-controllable detector, (touch sensor).
Increase the method and the device of its detection rightness of contact-controllable detector, this method is the surface at substrate 10, the thin conductive film 20 of even coated one deck, conductive material is printed in the rim all around of conductive film 20, lead is connected to the voltage contact 61 in resistive element group 30 its four corners, 62,63, on 64, selecting wherein, two point imposes on suitable cathode voltage, two point imposes on OV voltage or ground connection in addition, be positioned at plural resistive element 30 on 20 layers of the conductive films for discontinuous, and the clearance component 70 of 30 of every adjacent outboard row resistive elements can form a resistance area, utilize this resistance area to reduce to flow through every current flow of resistive element 30 separately, make on conductive film 20 surfaces and can obtain higher resistance value, to reduce the electric field intensity between per two corner contacts, with the crooked radian of preliminary reduction equipotential line; Utilize again and be positioned at the formed clearance component of 40 of plural insulator element of every row 50 as resistance area, the electric field that wherein utilizes the obstruct of insulator element 40 can make every independently resistive element 30 2 ends be produced flows to clearance component 50, can further effectively revise the equipotential line crooked radian that is produced by resistive element 30 and clearance component 70, make at last its X axis of electric field on the conductive film 20 and Y-axis to equipotential line be tending towards straight line.
On the method for described its detection rightness of increase contact-controllable detector and the conductive film 20 of device the equipotential line S of measured X axis and Y-axis to equipotential line S1 all be tending towards straight line, in the touch-control effective coverage on conductive film 20, when doing the contact, can obtain X, Y-axis to all correct voltage signal.
The method of described its detection rightness of increase contact-controllable detector and the substrate 10 of device are constituted by glass material or flexual plastic material, conductive film 20 preferably is made of a tin indium oxide (ITO:Iidium Tin Oxide) material, and resistive element 30 preferably is made of silver slurry wire material.
See also shown in the accompanying drawing 3, in arranging in the middle of between insulator element 40 regional public outboard row resistive elements 30 zones of the method for described its detection rightness of increase contact-controllable detector and the inboard row of device, more be arranged with resistive element 30 ' the public insulator element 40 ', wherein to be the L type be good to the insulator 40 ' in every corner, by formed clearance component 50 ', 70 ', revise this interregional field effect in order to compensation, the arc degree of the interregional equipotential line of row's resistive element 30 ' and insulator element 40 ' can further be modified to and be tending towards straight line in the middle of making.
See also shown in the accompanying drawing 5,6, insulator element 40 zones of the method for described its detection rightness of increase contact-controllable detector and the inboard row of device, its plural clearance component 50, the electric field that further this zone is produced plural number is compensated correction, and further that this is regional equipotential line is modified to and is tending towards straight line.
See also shown in the accompanying drawing 1, rectangular substrate 10, this substrate 10 can be transparent or semitransparent hard glass, or select to be constituted by the flexual transparent or semitransparent plastic material of a kind of tool, at first on the surface of substrate 10, with coated or mode of printing, drape over one's shoulders multiple layer of conductive film 20 (1TO layer) in substrate 10 upper surfaces; Plural number resistive element group 30 is printed in conductive film 20 lip-deep four edges with the form of plural strip, and resistive element group 30 is good with the material of silver-colored pulp material or carbon ag material or other electric conductivity preferably.Wherein plural resistive element group 30 is above and discontinuous forms with a row, printing is distributed in conductive film 20 lip-deep rims all around, being positioned at the locational resistive element 30 of every nook and cranny contact 61-64 is to be the L type, every independent row's resistive element group 30 all has greatly, little different clearance component 70, this clearance component 70 is the materials that belong to conductive film 20, be to belong to resistance region with regard to electric field action, the purpose that this plural clearance component 70 is main, be to be positioned at every two point 61 in reduction, the voltage difference that other resistive element 30 2 ends of each of 63 institute degree is given birth to can promote the whole resistance value of arranging resistive element group 30 zones whereby; Therefore preliminary the slowing down of its crooked degree of equipotential line S that can tentatively make every row's resistive element group 30 be produced; In other words, can effectively reduce the voltage gradient that per two corner contacts are produced, can tentatively be improved with the degree of the equipotential line S bending that makes preliminary generation by the discontinuous of resistive element group 30 and the clearance component 70 that produced.Wherein the length specification of resistive element 30 and clearance component 70 is large and small, is to decide according to touch-control screen detector (inductor) operational voltage value large and small and that imposed on.
See also shown in the accompanying drawing 3, utilize etched mode, in inboard near every row's resistive element group 30, form at least one above insulator element 40 of two rows that is discharged to, every adjacent row's insulator element 40 is parallel each other, insulator element 40 partly can be classified same row as with resistive element group 30 simultaneously, be somebody's turn to do every independently insulator element 40 and all do not have the existence of conduction book film 20, and it is big to can be length, for a short time the design that differs, wherein between same row and adjacent insulator element 40, all have big, for a short time the plural clearance component 50 that differs, clearance component 50 is the somes that belong to conductive film 20, its objective is and forming a resistance region, in order to increase the resistance value in zone between the plural insulator 40 of every row, further effectively the plural resistive element 30 formed electric fields of every row are given balance again, further make conductive film 20 lip-deep electric field homogenizings, its definition is on effective contact of conductive film 20 reaction zone 100, can obtain X axis or Y-axis to the linearity equipotential line.The length specification (or number) of insulator element 40 and gap 50 are large and small to be large and small and impose on operational voltage value and decide by inductor.
See also shown in the accompanying drawing 4, clearance component the 70, the 50th of the present invention is formed by every row and 30 intervals of adjacent resistor elements, the number and the length of this clearance component 70,50 are that to be bestowed magnitude of voltage according to the large and small and inductor of inductor specification large and small and determine.Through resistive element 30 and desire flows to clearance component 70 zones (being resistance region) that the part electric current on conductive film 20 surfaces is limited in designated length, so as to 30 of the resistive elements of every independence (single), each forms certain voltage gradient, so as to the electric field between rough balance (homogenising) two point (61-64), make preliminary the reducing of equipotential line crooked radian energy of appointing (being 30 of the plural resistive elements of every row) between two point (61-64).Between every row's insulator element 40 and outermost resistor group 30, further be arranged with resistive element group 30 ' and insulator element 40 ', to arrange as the centre, in the middle of this row be by resistive element group 30 ' and insulator element 40 ' each other line spread form, make in this middle row, have clearance component 50 ' and clearance component 70 ' simultaneously, plural clearance component 50 ', 70 ' among the middle row can produce certain voltage gradient equally, reduces the equipotential line flexibility so as to further reducing again.The plural resistance region that is formed between the insulator element 40 between inboard row (being clearance component 50), further the equipotential line flexibility is compensated (payment), make the equipotential line S that produced between the two point (61-64) no matter X axis or Y-axis to coordinate on, all be tending towards straight line.As shown in Figure 4, wherein every row's resistor symbols is that its discontinuous resistive element 30 of expression this case inductor, insulator element 40 and clearance component 50,70 omit in this figure; Positive potential VCC is imposed on contact 62, and another contact 63 ground connection (i.e. 0 current potential); When contact 61 impose positive voltage (+V), contact 64 imposes 0 voltage (OV), then just forms the Y-axis equipotential line S of vertical and linearity as shown in Figure 6; If contact 64 via external circuit conversion impose positive voltage (+V), and contact 61 imposes OV voltage, then just form the X-axis equipotential line S1 of X-axis linearity as shown in Figure 5, if these two kinds of states exchange (switching) always, when then on the contact of inductor reaction zone 100, being subjected to the contact, this contact will the uniform electric field on the conductive film 20 form X, Y-axis to voltage signal for output.