CN101866253B - Resistance type multi-point touch device and method - Google Patents
Resistance type multi-point touch device and method Download PDFInfo
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- CN101866253B CN101866253B CN 200910134484 CN200910134484A CN101866253B CN 101866253 B CN101866253 B CN 101866253B CN 200910134484 CN200910134484 CN 200910134484 CN 200910134484 A CN200910134484 A CN 200910134484A CN 101866253 B CN101866253 B CN 101866253B
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Abstract
The invention discloses a resistance type multi-point touch device and a method. A plurality of bus bars intersects each other to form a plurality of intersecting regions. The intersecting bus bars are separated from each other by a plurality of insulating particles. First, suppressed intersecting regions are sensed, and then contact points on the suppressed intersecting regions are sensed according to the suppressed intersecting regions. Sensing of the suppressed intersecting regions is performed by firstly sensing suppressed bus bars, and then judging possibly suppressed intersecting regions based on the suppressed bus bars, and sensing suppressed intersecting regions based on these possibly suppressed intersecting regions. The driving and sensing modes do not cause the weakness of rearward sensed contact point signals because of the excessive forward contact points, and the different judgment standards are unnecessary to be provided aiming at the different sensing regions. In addition, the invention can sense the suppressed intersecting regions, and judge the positions of contact points located in the intersecting regions, and by adopting the invention, higher resolution can be obtained by using less conductive bus bars.
Description
Technical field
The present invention relates to a kind of resistance type touch control device and method, particularly relate to a kind of resistance type multi-point touch device and method.
Background technology
Among the U.S. Patent Publication No. US2007/0198926, disclosed a kind of resistance type multi-point touch device, comprise a upper electrode layer and a lower electrode layer, upper and lower electrode layer comprises respectively the wire that is arranged in parallel of most bar different directions, and the insulating particle (spacer) that distributes between levels is used upper and lower electrode layer is separated.Therefore when upper electrode layer was subject to pressing down, the wire of part upper electrode layer can contact with the wire of bottom electrode, wherein all lower electrode layer wire ground connection.The wire of upper electrode layer is driven in proper order, and when arbitrary upper electrode layer wire is driven, and all lower electrode layer wires all can be by sensing in proper order once, but the mutually point repeatedly that intersects of all upper and lower electrode layer wires of sensing by this.Therefore driven upper electrode layer wire is when sensed lower electrode layer wire contacts because pressing down, electric current can flow to sensed lower electrode layer wire by driven electrode layer wire, by the signal of sensing lower electrode layer wire, which just can sense, and repeatedly point is touched mutually.
As shown in Figure 1, repeatedly point is simultaneously touched may to cause simultaneously a faciation when finger presses, in the process of sensing, can cause the signal at rear sensed lower electrode layer wire to diminish, therefore must for diverse location mutually repeatedly point give different fiducial values, could hour still distinguishable whether touched at signal.Yet such solution still may because touched repeatedly count mutually too much and inaccurately front, apparently, each mutually repeatedly foundation of the fiducial value of point, store and all need to take many costs, but but can't guarantee accuracy.In addition, when the requirement of touch-control resolution is higher, just must increase the density of wire, relatively the frequency of sensing reduces with regard to necessary.
This shows that above-mentioned existing resistance type multi-point touch device obviously still has inconvenience and defective, and demands urgently further being improved in product structure, manufacture method and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but have no for a long time applicable design is finished by development always, and common product and method do not have appropriate structure and method to address the above problem, and this obviously is the problem that the anxious wish of relevant dealer solves.Therefore how to found a kind of method of new resistance-type multiconductor sensing apparatus, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
Fundamental purpose of the present invention is, overcome the defective that existing resistance type multi-point touch device exists, and a kind of method of new resistance-type multiconductor sensing apparatus is provided, technical matters to be solved is to make it can improve known resistance-type sensing apparatus produces the touching interpretation because of multi-point touch sensing problem.
Another object of the present invention is to, overcome the defective that existing resistance type multi-point touch device exists, and provide a kind of new resistance-type multiconductor sensing apparatus and method, it is faint that technical matters to be solved is that driving of the present invention and sensing mode can too much not cause at the contact point signal of rear sensing because of contact point the preceding, also do not need to give different criterions for different sensing areas.In addition, it is touched which overlapping area the present invention can not only sense, and more can judge the position that contact point is positioned at the overlapping area, that is the present invention can obtain with less bus higher resolution.The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of resistance type multi-point touch device according to the present invention's proposition, it comprises: most bar buss, comprise first, second bus of most bars, those first, second buss are mutually repeatedly in most overlapping areas, when at least one touching thing pressed, those first, second buss contacted and form at least one contact point of touching thing corresponding to each; One first driver element and one first sensing cell, this first driver element optionally provides respectively a noble potential in those buss, and this first sensing cell sensing is provided the bus of this noble potential by this first driver element, to sense the touched bus of most bars, those touched buss change mutually the overlapping area be the touched overlapping area of this possibility, when the bus that a noble potential is provided by this first driver element is this first bus, this first driver element provides an electronegative potential in all the second buss, and when the bus that this noble potential is provided by this first driver element was this second bus, this first driver element provided an electronegative potential in all the first buss; One second driver element and one second sensing cell, optionally provide respectively this noble potential and this electronegative potential in mutually repeatedly in first, second bus that each may touched overlapping area be somebody's turn to do the time at this second driver element, this the second sensing cell sensing is provided this first bus of this noble potential by this second driver element, to sense each touched overlapping area; And one the 3rd driver element and one the 3rd sensing cell, the 3rd driver element drives respectively mutually repeatedly in those buss of each touched overlapping area, when mutually repeatedly in one of pair of conductive bar of arbitrary touched overlapping area during by the 3rd drive unit drives, the 3rd sensing cell sensing this to not driven bus in the bus, to sense each contacting points position, wherein the 3rd driver element provides this noble potential and this electronegative potential in driven bus.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid resistance type multi-point touch device, wherein this first, second sensing cell is the accurate position of electric current, current potential or logic that sensing one promotes resistance one end, this first, second driver element is to provide this noble potential by this lifting resistance.
Aforesaid resistance type multi-point touch device, wherein the 3rd sensing cell is the current potential of the sensed bus of sensing one or both ends.
Aforesaid resistance type multi-point touch device, wherein the noble potential that provides of this first driver element, this second driver element, the 3rd driver element is respectively different potentials, and the electronegative potential that this first driver element, this second driver element, the 3rd driver element provide is respectively different potentials.
Aforesaid resistance type multi-point touch device, wherein the 3rd sensing cell this to bus in the bus of sensing when being the first bus, the current potential that the 3rd sense unit senses senses one of two-dimentional coordinate the first one dimension coordinate, when the 3rd sensing cell this to bus in the bus of sensing when being the second bus, the current potential that the 3rd sense unit senses senses one of this two dimension coordinate the second one dimension coordinate.
The object of the invention to solve the technical problems also realizes by the following technical solutions.A kind of resistance type multi-point touch device according to the present invention's proposition, it comprises: most bar buss, comprise first, second bus of most bars, those first, second buss are mutually repeatedly in most overlapping areas, when at least one touching thing pressed, those first, second buss contacted and form at least one contact point of touching thing corresponding to each; One first driver element and one first sensing cell, provide respectively a noble potential and an electronegative potential in mutually repeatedly in this first, second bus of each overlapping area the time at this first driver element, this the second sensing cell sensing is provided this first bus of this noble potential by this first driver element, to sense each touched overlapping area; And one second driver element and one second sensing cell, this second driver element drives respectively mutually repeatedly in each bus of each touched overlapping area, when mutually repeatedly in one of pair of conductive bar of arbitrary touched overlapping area during by this second drive unit drives, this the second sensing cell sensing this to not driven bus in the bus, to sense each contacting points position, wherein this second driver element provides this noble potential and this electronegative potential in driven bus.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid resistance type multi-point touch device, wherein this first sensing cell is the accurate position of electric current, current potential or logic that sensing one promotes the resistance two ends, this first driver element is to provide this noble potential by this lifting resistance.
Aforesaid resistance type multi-point touch device, wherein this second sensing cell is the current potential of the sensed bus of sensing one or both ends.
Aforesaid resistance type multi-point touch device, wherein the noble potential that provides of this first driver element, this second driver element is respectively different potentials, and the electronegative potential that this first driver element, this second driver element provide is respectively different potentials.
Aforesaid resistance type multi-point touch device, wherein this second sensing cell this to bus in the bus of sensing when being the first bus, the current potential that this second sense unit senses senses one of two-dimentional coordinate the first one dimension coordinate, when the 3rd sensing cell this to bus in the bus of sensing when being the second bus, the current potential that the 3rd sense unit senses senses one of this two dimension coordinate the second one dimension coordinate.
The object of the invention to solve the technical problems realizes in addition more by the following technical solutions.A kind of resistance type multi-point touch method according to the present invention's proposition, it comprises: at least one touched overlapping area on sensing one resistance type multi-point touch device, wherein this resistance type multi-point touch device comprises most bar buss, those buss comprise first, second bus of most bars, those first, second buss are mutually repeatedly in most overlapping areas, when at least one touching thing pressed, those first, second buss contacted and form at least one contact point of touching thing corresponding to each; And according to each this at least one contact point of touched overlapping area sensing.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid resistance type multi-point touch device, wherein the sensing of this at least one touched overlapping area comprises: provide respectively this noble potential and an electronegative potential in mutually repeatedly in this first, second bus of each overlapping area; And when being provided respectively this noble potential and this electronegative potential when mutually repeatedly in this first, second bus of arbitrary overlapping area, sensing is provided this first bus of this noble potential, to sense each touched overlapping area.
Aforesaid resistance type multi-point touch device, wherein the sensing of this first bus is the accurate position of electric current, current potential or logic that sensing one promotes resistance one end, this noble potential is to provide by this lifting resistance.
Aforesaid resistance type multi-point touch device, wherein the sensing of this at least one contact point comprises: repeatedly in each bus of each touched overlapping area, the two ends of driven bus are provided respectively a noble potential and an electronegative potential mutually in driving respectively; When mutually repeatedly when one of pair of conductive bar of arbitrary touched overlapping area is driven, sensing this to not driven bus in the bus, to sense each contacting points position, wherein the sensing of this sensed bus is the current potential of these sensing bus one or both ends of sensing.
Aforesaid resistance type multi-point touch device, wherein when this to bus in the bus of sensing when being the first bus, sense one of two-dimentional coordinate the first one dimension coordinate according to the current potential that senses, when this to bus in the bus of sensing when being the second bus, sense one of this two dimension coordinate the second one dimension coordinate according to the current potential that senses.
Aforesaid resistance type multi-point touch device wherein more comprises the touched bus of most bars on this resistance type multi-point touch device of sensing, and wherein this at least one touched overlapping area is to come sensing according to those touched buss.
Aforesaid resistance type multi-point touch device, wherein the sensing of those touched buss comprises:
Provide respectively a noble potential in those buss; When the bus that is provided this noble potential is this first bus, provide an electronegative potential in those the second buss; When the bus that is provided this noble potential is this second bus, provide this electronegative potential in those the first buss; Sensing is provided the bus of this noble potential, to sense those touched buss.
Aforesaid resistance type multi-point touch device, the sensing that wherein is provided the bus of noble potential are the accurate positions of electric current, current potential or logic that sensing one promotes resistance one end, and this noble potential is to provide by this lifting resistance.
Aforesaid resistance type multi-point touch device, wherein the sensing of this at least one touched sensing area comprises: provide respectively this noble potential and this electronegative potential in mutually repeatedly in each may touched overlapping area this first, second bus, wherein those touched buss mutually repeatedly may touched overlapping area in each; When being provided respectively this noble potential and this electronegative potential when mutually repeatedly in arbitrary this first, second bus that may touched overlapping area, sensing is provided this first bus of this noble potential, to sense each touched overlapping area.
Aforesaid resistance type multi-point touch device, when wherein the touched overlapping area of possibility that changes mutually of those touched buss was less than or equal to three, this at least one touched overlapping area was the touched overlapping area of this possibility.
The present invention compared with prior art has obvious advantage and beneficial effect.By above technical scheme as can be known, main technical content of the present invention is as follows: the present invention discloses a kind of resistance type multi-point touch device and method, repeatedly form mutually most overlapping areas by most bar buss, be separated by by most insulating particles between the bus that changes mutually, by sensing touched overlapping area, sense respectively the contact point that is positioned on the touched overlapping area according to touched overlapping area again.The sensing of touched overlapping area can be the touched bus of first sensing, judges the touched overlapping area of possibility according to touched bus, again by sensing touched overlapping area in touched overlapping area.
Advantage of the present invention and effect are by the touched bus of sensing, can dwindle the scope of searching touched overlapping area, and by the touched overlapping area of sensing, can dwindle the scope of searching contact point.Therefore, resistance type multi-point touch device of the present invention and method can sense all contact points rapidly, and the position of each contact point can represent with two-dimentional coordinate.
Because the present invention adopts wider bus, therefore the sensing range that bus is contained obtains being better than the resolution of prior art greater than known techniques.
In addition, the present invention can sense the contact point that a plurality of different touching things press simultaneously, can and judge different gestures in order to tracking.
In sum, the present invention has significant progress technically, and has obvious good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above and other purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is the synoptic diagram of a known resistance type multi-point touch device;
Fig. 2 is the structure flow chart of a preferred embodiment of the present invention;
Fig. 3 is the process flow diagram of touched overlapping area driving of the present invention and sensing;
Fig. 4 A, Fig. 4 B figure is the structural representation of the touched overlapping area of resistance type multi-point touch device sensing of the present invention with Fig. 4 C;
Fig. 5 is the process flow diagram of contact point sensing of the present invention;
Fig. 6 A, Fig. 6 B and Fig. 6 C are the structural representations of resistance type multi-point touch device sensing contact point of the present invention;
Fig. 7 is the process flow diagram of touched bus sensing of the present invention;
Fig. 8 A, Fig. 8 B and Fig. 8 C are the structural representations of the touched bus of resistance type multi-point touch device sensing of the present invention;
Fig. 9 is the overlapping area image synoptic diagram with the tip touching; And
Figure 10 A and Figure 10 B are with the two overlapping area image synoptic diagram that refer to touching of Dan Zhiyu.
X1, X2 ..., X8: the first bus Y1, Y2 ..., Y8: the second bus
D1, D2, D3: driver element V1, V2, V3: sensing cell
P: contact point Px: the first one dimension coordinate
Py: the second one dimension coordinate VH1, VH2, VH3: noble potential
VL1, VL2, VL3: electronegative potential
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, resistance type multi-point touch device and method to foundation the present invention proposition, its embodiment, structure, method step, feature and effect thereof are described in detail as follows.
It is as follows that the present invention will describe some embodiment in detail.Yet except disclosed embodiment, the embodiment that the present invention can also be used in other widely implements.Scope of the present invention is not subjected to the restriction of those embodiment, is be as the criterion with thereafter claim.And be familiar with this skill person and can understand summary of the invention of the present invention for clearer description being provided and making, each several part is not drawn according to its relative size in the diagram, some size is highlighted and the exaggeration that seems with the ratio regular meeting of other scale dependents, and incoherent detail section is not also drawn fully, in the hope of illustrated succinct.
A specific embodiment of the present invention is a kind of resistance-resistance type multi-point touch method, as shown in Figure 2.At first, shown in step 210, at least one touched overlapping area on sensing one resistance type multi-point touch device is next shown in step 220, according at least one contact point of each touched overlapping area sensing.
Above-mentioned multi-point touch control apparatus comprises most bar buss, these buss comprise first, second bus of most bars, first, second bus is mutually repeatedly in most overlapping areas, when at least one touching thing pressed, first, second bus of part contacted and forms at least one contact point that presses corresponding to each touching thing.
First, second bus keeps not contacting when not touched, in one example of the present invention, can be dispersed in therebetween with most insulating particles (spacer) between first, second bus, uses to separate first, second bus.In addition, the present invention does not limit the position of first, second bus between self, can be the first bus upper, can also be that the second bus is upper.In one example of the present invention, the different axial array of first, second bus are arranged an overlapping area array that forms to consist of by most overlapping areas.For example the first bus is arranged with horizontal direction, and the second bus is arranged with vertical direction, and vice versa.
First, second bus can have respectively predetermined width, so first, second bus repeatedly locates to form the overlapping area mutually.Knowing correlation technique person can know by inference, and the width of above-mentioned bus does not need unanimously, can each bus be different width, so the area of overlapping area also may be different, and the present invention comprises but do not limited.
In addition, know correlation technique person and can know by inference, according to the difference of touching thing, the quantity of the overlapping area of first, second bus Contact also may be different from area.In a preferable example of the present invention, the touch point on each overlapping area is single, no matter that is the size that presses in an overlapping area, the scope that presses on this overlapping area is considered as single touch point.Knowing correlation technique person can also know by inference, when if the overlapping area is larger, also plural contact point might be arranged, in the case, can be according to the sequencing that presses, tell two different contact points, the present invention for the quantity of contact point in the single overlapping area including but not limited to more than one.
Fig. 3 is the method for sensing of touched overlapping area of the present invention.Shown in step 310, provide respectively a noble potential and an electronegative potential in mutually repeatedly in first, second bus of each overlapping area, and shown in step 320, when when mutually repeatedly in first, second bus of arbitrary overlapping area, being provided respectively noble potential and electronegative potential, sensing is provided the first bus of noble potential, to sense each touched overlapping area.
For example, drive sequentially the first bus, during each bar first bus is driven, drive sequentially each bar second bus, so, just one by one on driven the first bus of sensing each overlapping area whether touched, by driving the process of each first bus, each overlapping area in the array of sensing overlapping area, and then sense each touched overlapping area.
Accordingly, in a preferred embodiment of the present invention, resistance type multi-point touch device in the touched overlapping area of sensing shown in Fig. 4 A figure, comprise a sensing cell V1 and a driver element D1, driver element provides a noble potential VH1 and an electronegative potential VL1, and wherein noble potential VH1 provides to the first bus (X1, X2, one of ..., X8), electronegative potential VL1 provides to the second bus (Y1 in addition, Y2, one of ..., Y8), sensing cell V1 sensing is provided the bus of noble potential VH1.
The sensing that is provided the first bus of noble potential VH1 can be including but not limited to the accurate position of sensing current potential, electric current or logic, and can be to come sensing in the one or both ends of the first bus that is provided noble potential VH1.For example, in one example of the present invention, noble potential VH1 promotes resistance R 1 by one to offer the first bus the first bus (X1, X2, ..., one of X8), the accurate position of current potential, electric current or logic that promotes on resistance R 1 one sides (as promoting between resistance R 1 and the bus) by sensing senses each touched overlapping area.
For example, when noble potential VH1 and electronegative potential VL1 offered respectively bus X1, Y1, whether sensing cell V1 just can sense the overlapping area that bus X1, Y1 change mutually touched.For example, when taking turns to overlapping area that bus X1, Y1 change mutually when being measured, driver element D1 provides respectively noble potential VH1 and electronegative potential VL1 to bus X1, Y1, shown in Fig. 4 B, if the overlapping area that bus X1, Y1 change mutually is not touched, electric current is not by the bus X1 bus Y1 that flows through, and the signal that therefore promotes resistance R 1 does not have significant change, and sensing cell V1 can judge by this that the overlapping area that bus X1, Y1 change mutually is not touched.Similarly, when taking turns to overlapping area that bus X8, Y7 change mutually when being measured, driver element D1 provides respectively noble potential VH1, electronegative potential VL1 to bus X8, Y7.When the overlapping area that bus X8, Y7 change mutually was touched, electric current flowed to bus Y7 by bus X8, and sensing cell V1 changes by the current potential that sensing promotes resistance R 1, and it is touched to sense the overlapping area that bus X8, Y7 change mutually.Knowing related art techniques person can know by inference, driver element can also be provide respectively electronegative potential VL1 and noble potential VH1 to the first bus (X1, X2 ..., one of X8) with the second bus (Y1, Y2 ..., one of Y8), shown in Fig. 4 C.
Fig. 5 is the schematic flow sheet according at least one contact point of each touched overlapping area sensing.Shown in step 510, repeatedly in each bus of each touched overlapping area, the two ends of driven bus are provided respectively a noble potential and an electronegative potential mutually in driving respectively.And for example shown in the step 520, when mutually repeatedly when one of pair of conductive bar of arbitrary touched overlapping area is driven, sensing this to not driven bus in the bus, to sense each contacting points position.For the sensing of driven bus not, sensing one or both ends of driven bus not simultaneously.
In other words, in each touched overlapping area, will change mutually drives one of bus in this of this overlapping area with rotating, and sensing this to not driven another bus in the bus, to sense the two-dimentional coordinate of contact point.For example, drive first this to the first bus in the bus, and sensing the second bus, to sense the position of contact point on the first bus is axial, as one first one dimension coordinate Px in the two-dimentional coordinate.Next, drive this to the second bus in the bus, and sensing the first bus, to sense the position of contact point on the second bus is axial, as one second one dimension coordinate Py in the two-dimentional coordinate.The sequencing that drives first, second bus does not limit, and until first, second bus all behind the sensing, can obtain contact point respectively in the position of first, second bus on axially, and this position can represent with two-dimentional coordinate (Px, Py).
In a preferred embodiment of the present invention, resistance type multi-point touch device for the sensing of contact point as shown in Figure 6A.Resistance type multi-point touch device comprises most bar buss, a sensing cell V2 and a driver element D2.Most bar buss be above-mentioned the first bus (X1, X2 ..., X8) with the second bus (Y1, Y2 ..., Y8).One of driver element provides a noble potential VH2 and an electronegative potential VL2 driving one of most bar buss, and the bus that changes mutually of sensing cell V2 sensing and driven bus.Therefore when driven bus and sensed bus changed in a touched overlapping area mutually, sensing cell V2 can sense the position of contact point P on driven bus is axial.
For example, when press the overlapping area be bus X8, Y7 change mutually the overlapping area time, shown in Fig. 6 B, driver element provides first noble potential VH2, electronegative potential VL2 in bus X8 two ends, and sensing bus Y7 is positioned at the axially position Px of (the first bus is axial) of bus X8 with sensing contact point P.Similarly, shown in Fig. 6 C, driver element provides noble potential VH2, electronegative potential VL2 in bus Y7 two ends again, and sensing bus X8, is positioned at the axially position Px of (the first bus is axial) of bus Y7 with sensing contact point P.
In one embodiment of this invention, driver element D1 and sensing cell V1 sequentially distinguish each overlapping area of sensing, to sense all touched overlapping areas, and driver element D2 and sensing cell V2 sequentially distinguish each overlapping area of sensing, with sense each overlapping area at the axial bidimensional image of one first bus and the axial bidimensional image of one second bus, again according to each touched overlapping area by the position of judging each contact point in the axial bidimensional image of first, second bus.Apparently, choose first touched overlapping area than above-mentioned, only sense each contacting points position for touched overlapping area again, present embodiment usefulness is relatively poor.
In the above description, the sensing of sensing cell V1 can be including but not limited to the accurate position of sensing current potential, electric current or logic, and sensing cell V2 sensing is the actual value of signal, such as magnitude of voltage, current value, therefore and the sensing of two dimensions must be carried out in each overlapping area, and the sensing of touched overlapping area is far faster than the sensing of touch point.
Above-mentioned the first bus (X1, X2 ..., X8) with the second bus (Y1, Y2 ..., Y8) quantity is the usefulness in order to give an example only, is not to limit the present invention, and the quantity of the first bus and the second bus can change according to the needs in the design respectively.Therefore when first, second bus had respectively m, n bar, will have m*n overlapping area needed sensing, and the quantity of first, second bus is more, and the time of all overlapping areas of sensing will be more of a specified duration.Therefore, accelerate the sensing of all overlapping areas, could promote whole usefulness.
Accordingly, a most preferred embodiment of the present invention as shown in Figure 7.Shown in step 710, the touched bus of most bars on the sensing resistor formula multi-point touch control apparatus.And for example shown in the step 720, judge the possible touched overlapping area that touched bus changes mutually according to these touched buss.For another example shown in the step 730, according at least one touched overlapping area on the sensing resistor formula multi-point touch control apparatus of the touched overlapping area of possibility.More shown in step 740, sense at least one contact point according to each touched overlapping area.
In other words, can be to judge that first which the first bus and the second bus are touched, can judge according to first, second touched bus may touched overlapping area.Sense touched overlapping area than above-mentioned Fig. 3, Fig. 4 A to Fig. 4 C for all overlapping areas, this specific embodiment only needs for sensing touched overlapping area in touched overlapping area.
In a preferable example of the present invention, resistance type multi-point touch device for the sensing of touched bus shown in Fig. 8 A.Resistance type multi-point touch device comprises most bar buss, a sensing cell V3 and a driver element D3.Most bar buss be above-mentioned the first bus (X1, X2 ..., X8) with the second bus (Y1, Y2 ..., Y8).Driver element D3 provides respectively a noble potential VH3 to one of these buss, and provide with an electronegative potential VL3 to all buss that are provided noble potential VH3 bus and change mutually, to sense respectively touched bus.
For example, shown in Fig. 8 B, driver element D3 sequentially provide noble potential VH3 to the first bus (X1, X2 ..., one of X8), and provide electronegative potential VL3 to all second buss that change mutually with the first bus that is provided noble potential VH3 (Y1, Y2 ..., Y8), sensing cell V3 sensing is provided the first sensing bar of noble potential VH3.For example, the first bus X1, X2 ..., or X7 is not touched, so electric current is by the first sensed bus X1, X2 ..., or X7 flows to any the second bus, so sensing cell V3 do not sense the first bus X1, X2 ..., or X7 is touched.When the first bus X8 was provided noble potential VH3, electric current flowed to the second bus Y7 by the first bus X8, thus sensing cell V3 can to sense the first bus X8 touched.
Similarly, driver element D3 sequentially provides noble potential VH3 to the second bus (Y1, one of Y2 ..., Y8), and provide electronegative potential VL3 to all first bus (X1 that change mutually with the second bus that is provided noble potential VH3, X2 ..., X8), sensing cell V3 senses the second touched bus by this, such as the second bus Y7.
Be provided the sensing of bus of noble potential VH2 similar in appearance to the above-mentioned sensing that is provided the first bus of noble potential VH1, can be including but not limited to the accurate position of sensing current potential, electric current or logic, and can be to come sensing in the one or both ends of the first bus that is provided noble potential VH3.For example, in one embodiment of this invention, noble potential VH3 promotes resistance R 2 by one to offer one of above-mentioned bus, and the accurate position of current potential, electric current or logic that promotes on resistance R 2 one sides (as promoting between resistance R 2 and the bus) by sensing senses each touched bus.
Therefore, can judge the touched overlapping area of at least one possibility that these touched buss change mutually by touched most bar buss (such as bus X8, Y7).When being not more than three by the touched overlapping area of possibility, may be touched overlapping area in touched overlapping area.
In addition, driver element D3 can provide respectively noble potential VH3 to most bar buss simultaneously, and sensing cell V3 can be simultaneously respectively sensing be provided the part of noble potential VH3 or whole buss, yet the bus that is provided noble potential VH 3 need be the first bus simultaneously or be the second bus simultaneously.
Above-mentioned bus is selected the driving or sensing optionally, and known correlation technique person can know by inference, and selecting of bus can be including but not limited to by switching device shifters such as switch, multi-function device, bus-bars, and the present invention is not limited.In addition, above-mentioned noble potential VH1, VH2, VH3 can be identical, can also be different, and similarly, above-mentioned electronegative potential VL1, VL2, VL3 can be identical, can also be different, the present invention is not limited.Moreover above-mentioned lifting resistance can be identical, can also be different, and the present invention is not limited.
According to above-mentioned, have point of contact can present the overlapping area image such as Fig. 9 after through sensing.When the touching thing had the tip, the contact meeting of touching thing was so that the overlapping area image presents corresponding contact point signal.When the touching thing of pointing or contact area is larger was touched, the overlapping area image can present a corresponding majority contact point signal, shown in Figure 10 A.
Contact point corresponding to identical contactant is understood clustering together, shown in Figure 10 B, therefore can analyze the corresponding contact point of each contactant.In another example of the present invention, the time that can also utilize each contact point to produce analyzes the corresponding contact point of each contactant.
By the analysis to the overlapping area image, can judge according to each contact point quantity of touching thing the form of contactant, for example can judge that contactant be pen or finger according to the number of the corresponding contact point quantity of contactant.In addition, the pressure in the time of can also coming the touching of simulating contact thing according to the corresponding contact point quantity of contactant.
In addition, by the continuously variance analysis of the overlapping area image of different time, the motion track in the time of more can following the trail of the contactant touching is to judge specific gesture.For example, can judge a gesture according to the touch position track of a pair of contactant, this touch position track to contactant comprises: mutually away from a, contactant towards another contactant away from, mutually close a, contactant towards close, the mutual rotation of another contactant, a contactant around another contactant rotation.
In one example of the present invention, can be according to judging that corresponding to the touch point quantity of each contactant each contactant is one or a finger, the pressure that also can simulate each contactant touching according to contact point quantity or distribution range corresponding to each contactant respectively.When the corresponding contact point of a contactant is most, can be according to corresponding to the centroid position of the contact point of each contactant touch position as this contactant.
Accordingly, another specific embodiment of the present invention is a resistance type multi-point touch device, comprises most bar buss, first, second driver element, first, second sensing cell.These buss comprise first, second bus of most bars, and these first, second buss are mutually repeatedly in most overlapping areas, and when at least one touching thing pressed, first, second bus contacted and forms at least one contact point of touching thing corresponding to each.
The first driver element and the first sensing cell can be such as Fig. 3 step 310,320 or the driver element D1 and sensing cell V1 of Fig. 4 A to Fig. 4 C as described in, provide respectively a noble potential and an electronegative potential in mutually repeatedly in first, second bus of each overlapping area the time at the first driver element, the second sensing cell sensing is provided the first bus of noble potential by the first driver element, to sense each touched overlapping area.
The second driver element and the second sensing cell can be such as Fig. 5 step 510,520 or the driver element D2 and sensing cell V2 of Fig. 6 A to Fig. 6 C as described in, the second driver element drives respectively mutually repeatedly in each bus of each touched overlapping area, when mutually repeatedly in one of pair of conductive bar of arbitrary touched overlapping area during by the second drive unit drives, the second sensing cell sensing this to not driven bus in the bus, to sense each contacting points position, wherein the second driver element provides noble potential and electronegative potential in driven bus.
The correlative detail of this specific embodiment has disclosed in the above stated specification, does not repeat them here.
In addition, an again specific embodiment of the present invention is a resistance type multi-point touch device, comprises most bar buss, one first, second, third driver element, one first, second, third sensing cell.These buss comprise first, second bus of most bars, and these first, second buss are mutually repeatedly in most overlapping areas, and when at least one touching thing pressed, first, second bus contacted and forms at least one contact point of touching thing corresponding to each.
The first driver element and the first sensing cell can be as the step 710 of Fig. 7 to 740 or the driver element D3 and sensing cell V3 of Fig. 8 A to Fig. 8 C as described in, the first driver element optionally provides respectively a noble potential in above-mentioned bus, and the first sensing cell sensing is provided the bus of noble potential by the first driver element, to sense the touched bus of most bars.Each overlapping area that these touched buss change mutually is the touched overlapping area of possible.When the bus that a noble potential is provided by the first driver element is the first bus, the first driver element provides an electronegative potential in all the second buss, and when the bus that noble potential is provided by the first driver element was the second bus, the first driver element provided an electronegative potential in all the first buss.
The second driver element and the second sensing cell can be such as Fig. 3 step 310,320 or the driver element D1 and sensing cell V1 of Fig. 4 A to Fig. 4 C as described in, the second driver element optionally provide respectively noble potential and electronegative potential in mutually repeatedly in each may touched overlapping area first, second bus the time, the second sensing cell sensing is provided the first bus of noble potential by the second driver element, to sense each touched overlapping area.
The 3rd driver element and the 3rd sensing cell can be such as Fig. 5 step 510,520 or the driver element D2 and sensing cell V2 of Fig. 6 A to Fig. 6 C as described in, the 3rd driver element drives respectively mutually repeatedly when the bus of each touched overlapping area, when mutually repeatedly in one of pair of conductive bar of arbitrary touched overlapping area during by the 3rd drive unit drives, the 3rd sensing cell sensing this to not driven bus in the bus, to sense each contacting points position, wherein the 3rd driver element provides noble potential and electronegative potential in driven bus.
The correlative detail of this specific embodiment has disclosed in the above stated specification, does not repeat them here.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (18)
1. resistance type multi-point touch device is characterized in that it comprises:
Most bar buss, comprise first, second bus of most bars, those first, second buss are mutually repeatedly in most overlapping areas, and when at least one touching thing pressed, those first, second buss contacted and form at least one contact point of touching thing corresponding to each;
One first driver element and one first sensing cell, this first driver element optionally provides respectively one first noble potential in those buss, and this first sensing cell sensing is provided the bus of this first noble potential by this first driver element, to sense the touched bus of most bars, the overlapping area that those touched buss change mutually is the touched overlapping area of possible, when the bus that this first noble potential is provided by this first driver element is this first bus, this first driver element provides one first electronegative potential in all the second buss, and when the bus that this first noble potential is provided by this first driver element was this second bus, this first driver element provided this first electronegative potential in all the first buss;
One second driver element and one second sensing cell, this second driver element optionally provide respectively one second noble potential and one second electronegative potential in mutually repeatedly in each may touched overlapping area this first, second bus the time, this the second sensing cell sensing is provided this first bus of this second noble potential by this second driver element, to sense each touched overlapping area; And
One the 3rd driver element and one the 3rd sensing cell, the 3rd driver element drives respectively mutually repeatedly in those buss of each touched overlapping area, when mutually repeatedly in one of pair of conductive bar of arbitrary touched overlapping area during by the 3rd drive unit drives, the 3rd sensing cell sensing this to not driven bus in the bus, to sense each contacting points position, wherein the 3rd driver element provides a third high current potential and one the 3rd electronegative potential in driven bus.
2. resistance type multi-point touch device as claimed in claim 1, it is characterized in that this first, second sensing cell is the accurate position of electric current, current potential or logic that sensing one promotes resistance one end, this first, second driver element is to provide this noble potential by this lifting resistance.
3. resistance type multi-point touch device as claimed in claim 1 is characterized in that the 3rd sensing cell is the current potential of the sensed bus of sensing one or both ends.
4. resistance type multi-point touch device as claimed in claim 1, it is characterized in that this first noble potential, this second noble potential, this third high current potential that this first driver element, this second driver element, the 3rd driver element provide are respectively different potentials, and this first electronegative potential, this second electronegative potential, the 3rd electronegative potential that this first driver element, this second driver element, the 3rd driver element provide are respectively different potentials.
5. resistance type multi-point touch device as claimed in claim 1, it is characterized in that the 3rd sensing cell this to bus in the bus of sensing when being the first bus, the current potential that the 3rd sense unit senses senses one first one dimension coordinate of a two-dimentional coordinate, when the 3rd sensing cell this to bus in the bus of sensing when being the second bus, the current potential that the 3rd sense unit senses senses one second one dimension coordinate of this two dimension coordinate.
6. resistance type multi-point touch device is characterized in that it comprises:
Most bar buss, comprise first, second bus of most bars, those first, second buss are mutually repeatedly in most overlapping areas, and when at least one touching thing pressed, those first, second buss contacted and form at least one contact point of touching thing corresponding to each;
One first driver element and one first sensing cell, provide respectively one first noble potential and one first electronegative potential in mutually repeatedly in this first, second bus of each overlapping area the time at this first driver element, this the first sensing cell sensing is provided this first bus of this first noble potential by this first driver element, to sense each touched overlapping area; And
One second driver element and one second sensing cell, this second driver element drives respectively mutually repeatedly in each bus of each touched overlapping area, when mutually repeatedly in one of pair of conductive bar of arbitrary touched overlapping area during by this second drive unit drives, this the second sensing cell sensing this to not driven bus in the bus, to sense each contacting points position, wherein this second driver element provides one second noble potential and one second electronegative potential in driven bus.
7. resistance type multi-point touch device as claimed in claim 6 is characterized in that this first sensing cell is the accurate position of electric current, current potential or logic that sensing one promotes the resistance two ends, and this first driver element is to provide this first noble potential by this lifting resistance.
8. resistance type multi-point touch device as claimed in claim 6 is characterized in that this second sensing cell is the current potential of the sensed bus of sensing one or both ends.
9. want 6 described resistance type multi-point touch devices such as right, it is characterized in that the noble potential that this first driver element, this second driver element provide is respectively different potentials, and the electronegative potential that this first driver element, this second driver element provide is respectively different potentials.
10. resistance type multi-point touch device as claimed in claim 6, it is characterized in that this second sensing cell this to bus in the bus of sensing when being the first bus, the current potential that this second sense unit senses senses one first one dimension coordinate of a two-dimentional coordinate, when this second sensing cell this to bus in the bus of sensing when being the second bus, the current potential that this second sense unit senses senses one second one dimension coordinate of this two dimension coordinate.
11. a resistance type multi-point touch method is characterized in that it comprises:
The touched bus of most bars on sensing one resistance type multi-point touch device, wherein this resistance type multi-point touch device comprises most bar buss, those buss comprise first, second bus of most bars, those first, second buss are mutually repeatedly in most overlapping areas, and wherein those touched buss are mutually repeatedly in each touched overlapping area of possibility;
May come at least one touched overlapping area on this resistance type multi-point touch device of sensing in touched overlapping area according to each, wherein when at least one touching thing presses, those first, second buss contact and form at least one contact point of touching thing corresponding to each, when wherein the touched overlapping area of possibility is less than or equal to three, may touched overlapping area be touched overlapping area; And
According to each this at least one contact point of touched overlapping area sensing.
12. resistance type multi-point touch method as claimed in claim 11 is characterized in that the sensing of this at least one touched overlapping area comprises:
Provide respectively one second noble potential and one second electronegative potential in mutually repeatedly in each may touched overlapping area this first, second bus; And
When repeatedly this first, second bus in the touched overlapping area of arbitrary possibility was provided respectively this second noble potential and this second electronegative potential mutually, sensing was provided this first bus of this second noble potential, to sense each touched overlapping area.
The electric current that 13. resistance type multi-point touch method as claimed in claim 12, the sensing that it is characterized in that this first bus are sensings one promotes resistance one end, current potential or logic standard position, this second noble potential is to provide by this lifting resistance.
14. resistance type multi-point touch method as claimed in claim 11 is characterized in that the sensing of this at least one contact point comprises:
Repeatedly in each bus of each touched overlapping area, the two ends of driven bus are provided respectively a third high current potential and one the 3rd electronegative potential mutually in driving respectively;
When mutually repeatedly when one of pair of conductive bar of arbitrary touched overlapping area is driven, sensing this to not driven bus in the bus, to sense each contacting points position, wherein the sensing of this sensed bus is the current potential of these sensed bus one or both ends of sensing.
15. resistance type multi-point touch method as claimed in claim 14, it is characterized in that when this to bus in the bus of sensing when being the first bus, sense one first one dimension coordinate of a two-dimentional coordinate according to the current potential that senses, when this to bus in the bus of sensing when being the second bus, sense one second one dimension coordinate of this two dimension coordinate according to the current potential that senses.
16. resistance type multi-point touch method as claimed in claim 11 is characterized in that the sensing of those touched buss comprises:
Provide respectively one first noble potential in those buss;
When the bus that is provided this first noble potential is this first bus, provide one first electronegative potential in those the second buss;
When the bus that is provided this first noble potential is this second bus, provide this first electronegative potential in those the first buss;
Sensing is provided the bus of this first noble potential, to sense those touched buss.
17. resistance type multi-point touch method as claimed in claim 16, the sensing that it is characterized in that wherein being provided the bus of the first noble potential is the accurate position of electric current, current potential or logic that sensing one promotes resistance one end, and this first noble potential is to provide by this lifting resistance.
18. resistance type multi-point touch method as claimed in claim 16 is characterized in that wherein the sensing of this at least one touched overlapping area comprises:
Provide respectively one second noble potential and one second electronegative potential in mutually repeatedly in each may touched overlapping area this first, second bus;
When repeatedly this first, second bus in the touched overlapping area of arbitrary possibility was provided respectively this second noble potential and this second electronegative potential mutually, sensing was provided this first bus of this second noble potential, to sense each touched overlapping area.
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| CN 200910134484 CN101866253B (en) | 2009-04-20 | 2009-04-20 | Resistance type multi-point touch device and method |
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| CN102591544A (en) * | 2011-01-18 | 2012-07-18 | 中兴通讯股份有限公司 | Terminal and method for implementation of human-computer interaction of terminal |
| CN102902469B (en) * | 2011-07-25 | 2015-08-19 | 宸鸿光电科技股份有限公司 | Gesture identification method and touch-control system |
| CN206133509U (en) * | 2016-08-26 | 2017-04-26 | 广州视睿电子科技有限公司 | Pressure detection device and pressure sensitive pen |
| CN108304102A (en) * | 2017-12-14 | 2018-07-20 | 中航华东光电有限公司 | The electric resistance touch screen of irregular shape |
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| TW374882B (en) * | 1997-01-24 | 1999-11-21 | C A M Graphics Co Inc | Touch screen |
| CN1947087A (en) * | 2004-02-23 | 2007-04-11 | 贾兹穆坦特公司 | Controller involving manipulation of virtual objects on a multi-contact touch screen |
| CN101751168A (en) * | 2008-12-03 | 2010-06-23 | 华矽半导体股份有限公司 | Touch-control device and method thereof |
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| US4587378A (en) * | 1984-07-30 | 1986-05-06 | Koala Technologies Corporation | Two-layer touch tablet |
| TW374882B (en) * | 1997-01-24 | 1999-11-21 | C A M Graphics Co Inc | Touch screen |
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