CN101963875B - Resistor type touch key device and method for realizing resistor type touch key - Google Patents
Resistor type touch key device and method for realizing resistor type touch key Download PDFInfo
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- CN101963875B CN101963875B CN 201010261495 CN201010261495A CN101963875B CN 101963875 B CN101963875 B CN 101963875B CN 201010261495 CN201010261495 CN 201010261495 CN 201010261495 A CN201010261495 A CN 201010261495A CN 101963875 B CN101963875 B CN 101963875B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052709 silver Inorganic materials 0.000 abstract description 5
- 239000004332 silver Substances 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 4
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
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Abstract
The invention relates to the field of touch keys, and discloses a resistor type touch key device and a method for realizing the resistor type touch key. The method comprises the following steps: A, extending coordinate electrodes at two ends of two conductive layers of a resistor type touch screen to form key electrodes; and B, distributing the key electrodes on positions corresponding to an upper circuit layer and a lower circuit layer, and adding an insulating point layer between the upper circuit layer and the lower circuit layer. A low-cost resistor type touch key is realized by extending the electrodes (generally silver pulp lines) of the conductive layer of the resistor type touch screen and using the principle of resistor type touch control. By adopting the device and the method, the interference resistance can be effectively improved, and because the conventional resources are used, components and parts are reduced, the PCB area is reduced, and cost is saved.
Description
Technical field
The present invention relates to touch button field, in particular the implementation method of a kind of resistance type touch key device and resistive touch button.
Background technology
Along with the development of the communication technology, the use of mobile phone is more and more universal.At present, the touch key-press technology of generally using in the mobile phone has resistance-type substantially, condenser type etc., and under some Product Definitions, the touch-screen next door can be designed with several touch key-presss; In order to realize the touch function of these several buttons, add in addition a capacitance touch button, following shortcoming is arranged: (1) increases capacitance touch IC can increase cost; (2) capacitance type touch key is subject to the interference of surrounding environment easily, so when design had relatively high expectations difficult design to structure space and hardware cabling and ground level; (3) the button electrode design of capacitance type touch key will design on printed circuit board (PCB), can not directly see through the printed circuit board (PCB) leaded light during backlight design, needs the higher light guide plate of use cost and surveys light emitting LED lamp; (4) resistive touch screen and capacitance type touch key Joint Designing, user's experience can be poor, because resistive touch screen needs power to remove to trigger touch screen function, and capacitance type touch key does not need power, only needs to touch gently.
If also will increase a touch control IC and re-use an other resistive touch button, also increased cost.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide the implementation method of a kind of resistance type touch key device and resistive touch button, for application scenarios shown in Figure 1, the electrode (being generally silver slurry line) of the conductive layer by extending resistive touch screen, utilize the principle of resistive touch control to realize a kind of cheaply resistive touch button, it is simple in structure, and cost of manufacture is low.
The technical scheme that technical solution problem of the present invention adopts is as follows:
A kind of resistance type touch key device, comprise the resistance-type touch screen, be arranged on the coordinate electrode at these resistive touch screen conductive layer two ends, and the touch key-press that arranges on described resistive touch screen next door, wherein, described touch key-press comprises line layer, lower line layer, corresponding position is respectively arranged with the button electrode that is extended by described coordinate electrode on line layer and the lower line layer on described, and is provided with the insulating point layer that makes corresponding button electrode conduction by extruding between line layer and the lower line layer on described.
Described resistance type touch key device, wherein, described coordinate electrode is four, and it is corresponding with it to be respectively X`+, X`-, Y`+ and Y`-, and the button electrode that is extended by described coordinate electrode is four also, is respectively X+, X-, Y+ and Y-.
Described resistance type touch key device, wherein, line layer is disposed with button electrode X-, X-, X+ and X+ on described, correspondingly with it is disposed with button electrode Y-, Y+, Y-and Y+ at described lower line layer.
Described resistance type touch key device, wherein, described resistive touch screen comprises top electrode layer, lower electrode layer, lower surface applying in described top electrode layer is provided with the first conductive layer, upper surface applying at described lower electrode layer is provided with the second conductive layer, and is disposed with a plurality of insulation kicks between described the first conductive layer and the second conductive layer.
Described resistance type touch key device, wherein, described coordinate electrode X`-, X`+ are separately positioned on the left and right two ends of described the first conductive layer.
Described resistance type touch key device, wherein, described coordinate electrode Y`+, Y`-are separately positioned on the upper/lower terminal of described the second conductive layer.
Described resistance type touch key device wherein, when each extruding makes corresponding button electrode conduction, produces corresponding look-at-me.
A kind of implementation method of resistive touch button, comprising step:
The coordinate electrode at A, extension resistive touch screen two conductive layers two ends forms the button electrode;
B, with described button distribution of electrodes on the upper line layer position corresponding with lower line layer, and add the insulating point layer in the middle of line layer and the lower line layer on described.
The implementation method of described resistive touch button, wherein, described coordinate electrode is four, is respectively X`+, X`-, Y`+ and Y`-, and is corresponding with it, the button electrode that is extended by described coordinate electrode is four also, is respectively X+, X-, Y+ and Y-;
And line layer sets gradually button electrode X-, X-, X+ and X+ on described, correspondingly with it sets gradually button electrode Y-, Y+, Y-and Y+ at described lower line layer.
The implementation method of described resistive touch button wherein, also comprises step:
C, when having key to press, the button electrode district of upper line layer and lower line layer can be by the conducting of extruding insulation point layer, to produce corresponding look-at-me;
D, according to described look-at-me, trigger key scan, at making alive between button electrode X+, the X-and between Y+, the Y-, by Y+ or Y-, X+ or X-read magnitude of voltage, the magnitude of voltage that reads is carried out analog to digital conversion determine high-low level, to determine key assignments successively.
Beneficial effect of the present invention: the implementation method of a kind of resistance type touch key device provided by the invention and resistive touch button owing to adopt the coordinate electrode that extends resistive touch screen two conductive layers two ends, forms the button electrode; With described button distribution of electrodes on the upper line layer position corresponding with lower line layer, and add the insulating point layer in the middle of line layer and the lower line layer on described, the key scan mode that realizes is the physical contact conducting of key zone, the detection of Digital Implementation function effectively raises antijamming capability; Economized touch key-press control IC, saved the PCB area and reduced cost: owing to use existing resource, reduced components and parts, the PCB area has reduced, and provides cost savings.
Description of drawings
Fig. 1 is the resistance type touch key device application scenarios synoptic diagram of the embodiment of the invention;
Fig. 2 is resistive touch screen structure principle part section enlarged diagram;
Fig. 3 is resistive touch screen coordinate analogue measurement structural representation;
Fig. 4 is the resistance type touch key device structural representation of the embodiment of the invention;
Fig. 5 is the implementation method process flow diagram of the resistive touch button of the embodiment of the invention.
Embodiment
The implementation method of a kind of resistance type touch key device provided by the invention and resistive touch button, clearer, clear and definite for making purpose of the present invention, technical scheme and advantage, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
A kind of resistance type touch key device that the embodiment of the invention provides, main application scenarios as shown in Figure 1, upper edge region is the resistive touch screen zone, the below is three buttons.The button of below generally is to adopt capacitance touch button in the prior art, then need increase a touch control IC, has increased cost.
As shown in Figure 1, and the embodiment of the invention adopts described resistance type touch key device to comprise resistive touch screen 100, be arranged on the coordinate electrode 110 at these resistive touch screen 100 conductive layer two ends, and the touch key-press 120 that arranges on described resistive touch screen next door.Wherein, as shown in Figure 4, described touch key-press 120 comprises line layer 402, lower line layer 404, on described line layer 402, and lower line layer 404 on corresponding position be respectively arranged with the button electrode 401 that is extended by described coordinate electrode, and be provided with the insulating point layer 403 that makes corresponding button electrode conduction by extruding between line layer 402 and the lower line layer 404 on described.Below by concrete Application Example, resistance type touch key device of the present invention is further described in detail.
As shown in Figure 2, it is the cross-sectional view of resistive touch screen 100, described resistive touch screen adopts electric resistance partial pressure analog quantity technology, comprise that material is the lower electrode layer 202 of glass or film, material is the top electrode layer 201 of transparent membrane, and described film preferably adopts film (film).
Lower surface applying in described top electrode layer 201 is provided with the first conductive layer 203, the upper surface of described lower electrode layer 202 is fitted and is provided with the second conductive layer 204, wherein said the first conductive layer 203 and the second conductive layer 204 all adopt indium oxide (ITO) film to make, described indium oxide (ITO) film is nesa coating, very thin, namely transparent again the conduction.And between described the first conductive layer 203 and the second conductive layer 204, be disposed with a plurality of insulation kicks 205, and two conductive layers are separated insulation, when the contacts 206 such as pen or finger are arranged were pressed, two conductive layers just were in contact with one another, and formed the loop.
As shown in Figure 1, described coordinate electrode 110 at resistive touch screen 100 conductive layer two ends is four and comprises X`-, X`+ and Y`+, Y`.Be arranged on coordinate electrode X`-, the X`+ at touch-screen horizontal direction two ends, and the coordinate electrode Y`+, the Y` that are arranged on touch-screen vertical direction two ends.Described coordinate electrode X`-, X`+ are separately positioned on the left and right two ends of described resistive touch screen 100 first conductive layers 203.And described coordinate electrode Y`+, Y`-are separately positioned on the upper/lower terminal of described resistance-type touch screen 100 second conductive layers.
General four-wire type electric resistance touch screen principle is as follows: the two ends of four-wire resistance type touch screen conductive layer all scribble bullion slurry line, as a pair of coordinate electrode 110 of this workplace, as shown in Figure 1.Coordinate electrode 110 selects the fabulous material of electric conductivity (such as silver-colored ink powder) to consist of, and its electric conductivity approximately is 1000 times of ITO.Two one of conductive layers are horizontal directions up and down, and one is vertical direction, is used for respectively measuring the coordinate position of X and Y.The four-wire type electric resistance touch screen generally has four coordinate electrodes so, is respectively X`+, X`-, Y`+ and Y`-, as shown in Figure 1.
As shown in Figure 1, the coordinate electrode on surface level is called X`+ electrode and X`-electrode, is called Y`+ electrode and Y`-electrode at the electrode of perpendicular, as shown in Figure 3; During work, two coordinate electrodes provide reference voltage or measure as the position of measuring junction butt contact according to measuring needs.When measuring contact point X coordinate, the X+ electrode on the conductive layer and X-electrolysis connect respectively reference voltage and ground; The Y electrode is making alive not, can form so uniform voltage between the X electrode and distribute, and does measurement point with the Y+ electrode, by formula V
Voltage detecting=V
Reference voltage* the magnitude of voltage that obtains of R4/ (R3+R4) is changed by A/D, just can judge accordingly the X coordinate of contact point.
The Y coordinate also is similar, only need make into Y electrode making alive and the X electrode not making alive get final product.Namely when measuring contact point Y coordinate, the Y+ electrode on the conductive layer and Y-electrolysis connect respectively reference voltage and ground; The X electrode is making alive not, can form so uniform voltage between the Y electrode and distribute, and does measurement point with the X+ electrode, by formula V
Voltage detecting=V
Reference voltage* the magnitude of voltage that obtains of R2/ (R1+R2) is changed by A/D, just can judge accordingly the Y coordinate of contact point.
The resistance type touch key device of the embodiment of the invention, as depicted in figs. 1 and 2, described touch key-press 120 (is generally well silver slurry line of electric conductivity by the electrode 110 that extends described the first conductive layer 203 and the second conductive layer 204, being coordinate electrode X`-, X`+ and Y`+, Y`-extends out), as shown in Figure 1, form four button electrode X+,, X-, Y+, Y-, as shown in Figure 4.Because described coordinate electrode is four, as shown in Figure 1, it is corresponding with it to be respectively X`+, X`-, Y`+ and Y`-, and the button electrode that is extended by described coordinate electrode is four also, is respectively X+, X-, Y+ and Y-.Present embodiment can design at most the function that realizes four buttons so, i.e. Key4 (X-, Y-), Key3 (X-, Y+), Key2 (X+, Y-), Key1 (X+, Y+).
Structural design according to resistive touch screen, four distribution of electrodes are on described on line layer 402 and the described lower line layer 404, as shown in Figure 4, to be disposed with button electrode X-, X-, X+ and X+ corresponding with it for line layer 402 on described, is disposed with button electrode Y-, Y+, Y-and Y+ at described lower line layer 404.
And the conductive material that 404 of line layer 402 and described lower line layers keep ag paste electrode zone and ag paste electrode cabling zone on described (does not identify the wiring path that silver is starched line among the figure, can design according to actual needs), the middle insulating point layer 403 that adds, and on described insulating point layer 403, near described key area through hole is set, as shown in Figure 4.
When having key to press, the silver slurry button electrode zone of described upper line layer 402 and described lower line layer 404 can be by the described insulating point layer 403 of extruding, the button electrode of pressing is conducted, produce look-at-me by producing the button electrode (decide according to the resistive touch control IC indoor design of adopting, the present invention supposes that four electrodes can produce interruption) that interrupts.
Then according to the look-at-me that produces, trigger key scan, successively at making alive between X+, the X-and between Y+, the Y-, by Y+ or Y-, X+ or X-read magnitude of voltage, then, carry out ADC (analog to digital conversion) and determine high-low level, determine key assignments (supposing that four electrodes can both produce look-at-me) by following truth table, shown in chart 1:
| X+ or X- | Y+ or Y- | |
| Button 1 (X+, Y+) | 1 | 1 |
| Button 2 (X+, Y-) | 0 | 1 |
| Button 3 (X-, Y+) | 1 | 0 |
| Button 4 (X-, Y-) | 0 | 0 |
Therefore, a kind of resistance type touch key device that the embodiment of the invention provides, the key scan mode of realization is the physical contact conducting of key zone, the detection of Digital Implementation function effectively raises antijamming capability; Economized touch key-press control IC, saved the PCB area and reduced cost: owing to use existing resource, reduced components and parts, the PCB area has reduced, and provides cost savings.
Based on the resistance type touch key device that above-described embodiment provides, the embodiment of the invention also provides a kind of implementation method of resistive touch button, as shown in Figure 5, comprises step:
The coordinate electrode at step S510, extension resistive touch screen two conductive layers two ends forms the button electrode;
Step S520, with described button distribution of electrodes on the corresponding position of upper line layer 402 and lower line layer 404, and add insulating point layers 403 in the middle of line layer 402 and the lower line layer 404 on described, as shown in Figure 4.
Wherein, as shown in Figure 1, described coordinate electrode is four, is respectively X`+, X`-, Y`+ and Y`-, and is corresponding with it, and the button electrode that is extended by described coordinate electrode is four also, is respectively X+, X-, Y+ and Y-; As shown in Figure 4, and line layer 402 sets gradually button electrode X-, X-, X+ and X+ on described, correspondingly with it sets gradually button electrode Y-, Y+, Y-and Y+ at described lower line layer 404.
The implementation method of described resistive touch button as shown in Figure 5, also comprises step:
Step S530, when having key to press, the button electrode district of upper line layer and lower line layer can be by the conducting of extruding insulation point layer, to produce corresponding look-at-me;
Step S540, according to described look-at-me, trigger key scan, successively at making alive between button electrode X+, the X-and between Y+, the Y-, by Y+ or Y-, X+ or X-read magnitude of voltage, the magnitude of voltage that reads is carried out analog to digital conversion determine high-low level, to determine key assignments.
In sum, the implementation method of a kind of resistance type touch key device provided by the invention and resistive touch button has improved the antijamming capability of touch key-press.In traditional resistive touch button design, the method of employing resistance simulation amount reads the X of diverse location, the partial pressure value of Y-axis, ADC (analog digital conversion) module that is transferred to touch control IC realizes the location, the certain error of so easy generation, if it is just larger to have introduced mushing error on the transmission path, can cause the location inaccurate.Yet the key scan mode that realizes for the present invention is the physical contact conducting of key zone, and the detection of Digital Implementation function effectively raises antijamming capability.
Economized touch key-press control IC, saved the PCB area and reduced cost: owing to use existing resource, reduced components and parts, the PCB area has reduced, and provides cost savings.
Should be understood that application of the present invention is not limited to above-mentioned giving an example, for those of ordinary skills, can be improved according to the above description or conversion that all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (6)
1. resistance type touch key device, comprise resistive touch screen, be arranged on the coordinate electrode at these resistive touch screen conductive layer two ends, and the touch key-press that arranges on described resistive touch screen next door, it is characterized in that, described touch key-press comprises line layer, lower line layer, corresponding position is respectively arranged with the button electrode that is extended by described coordinate electrode on line layer and the lower line layer on described, and is provided with the insulating point layer that makes corresponding button electrode conduction by extruding between line layer and the lower line layer on described;
Described coordinate electrode is four, and it is corresponding with it to be respectively X`+, X`-, Y`+ and Y`-, and the button electrode that is extended by described coordinate electrode is four also, is respectively X+, X-, Y+ and Y-;
To be disposed with button electrode X-, X-, X+ and X+ corresponding with it for line layer on described, is disposed with button electrode Y-, Y+, Y-and Y+ at described lower line layer;
When each extruding makes corresponding button electrode conduction, produce corresponding look-at-me.
2. resistance type touch key device according to claim 1, it is characterized in that, described resistance-type touch screen comprises top electrode layer, lower electrode layer, lower surface applying in described top electrode layer is provided with the first conductive layer, upper surface applying at described lower electrode layer is provided with the second conductive layer, and is disposed with a plurality of insulation kicks between described the first conductive layer and the second conductive layer.
3. resistance type touch key device according to claim 2 is characterized in that, described coordinate electrode X`-, X`+ are separately positioned on the left and right two ends of described the first conductive layer.
4. resistance type touch key device according to claim 2 is characterized in that, described coordinate electrode Y`+, Y`-are separately positioned on the upper/lower terminal of described the second conductive layer.
5. the implementation method of a resistive touch button is characterized in that, comprises step:
The coordinate electrode at A, extension resistive touch screen two conductive layers two ends forms the button electrode;
B, with described button distribution of electrodes on the upper line layer position corresponding with lower line layer, and add the insulating point layer in the middle of line layer and the lower line layer on described;
Wherein, described coordinate electrode is four, and it is corresponding with it to be respectively X`+, X`-, Y`+ and Y`-, and the button electrode that is extended by described coordinate electrode is four also, is respectively X+, X-, Y+ and Y-;
And line layer sets gradually that button electrode X-, X-, X+ and X+ are corresponding with it to set gradually button electrode Y-, Y+, Y-and Y+ at described lower line layer on described.
6. the implementation method of resistive touch button according to claim 5 is characterized in that, also comprises step:
C, when having key to press, the button electrode district of upper line layer and lower line layer can be by the conducting of extruding insulation point layer, to produce corresponding look-at-me;
D, according to described look-at-me, trigger key scan, at making alive between button electrode X+, the X-and between Y+, the Y-, by Y+ or Y-, X+ or X-read magnitude of voltage, the magnitude of voltage that reads is carried out analog to digital conversion determine high-low level, to determine key assignments successively.
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| CN103677478B (en) * | 2012-09-24 | 2016-08-24 | 炬芯（珠海）科技有限公司 | A kind of resistive touch screen and button multiplexing circuit and detection method |
| CN107066164B (en) * | 2017-03-02 | 2020-02-21 | 深圳市拓普微科技开发有限公司 | Touch screen simulation method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1430745A (en) * | 2000-05-15 | 2003-07-16 | 诺基亚有限公司 | Device and method for implementing key |
| CN201781476U (en) * | 2010-08-18 | 2011-03-30 | 惠州Tcl移动通信有限公司 | Resistance type touch key device |
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| US8421483B2 (en) * | 2008-06-13 | 2013-04-16 | Sony Ericsson Mobile Communications Ab | Touch and force sensing for input devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1430745A (en) * | 2000-05-15 | 2003-07-16 | 诺基亚有限公司 | Device and method for implementing key |
| CN201781476U (en) * | 2010-08-18 | 2011-03-30 | 惠州Tcl移动通信有限公司 | Resistance type touch key device |
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