CN101604220A - The detection method of electric resistance touch-control panel and contact point form thereof - Google Patents
The detection method of electric resistance touch-control panel and contact point form thereof Download PDFInfo
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- CN101604220A CN101604220A CNA2009101597682A CN200910159768A CN101604220A CN 101604220 A CN101604220 A CN 101604220A CN A2009101597682 A CNA2009101597682 A CN A2009101597682A CN 200910159768 A CN200910159768 A CN 200910159768A CN 101604220 A CN101604220 A CN 101604220A
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Abstract
The invention discloses the detection method of a kind of electric resistance touch-control panel and contact point form thereof.Have a plurality of surveyed areas on this electric resistance touch-control panel.When the method comprises the following steps: to find to have contact action to produce, obtain a plurality of contacting points positions on a contact panel; When these contact points were positioned at adjacent surveyed area, judging that these contact points could merge became one and merges contact point; And can merge in these contact points becomes when merging contact point, judges that this merges contact point is the contact point of one first form or the contact point of one second form.The present invention can judge apace whether a plurality of contact points can merge to be become one and merges contact point, and can further this merging contact point zone be divided into the contact point of first form or the contact point of second form.
Description
Technical field
The present invention relates to a kind of electric resistance touch-control panel and detection method thereof, relate in particular to the detection method of a kind of electric resistance touch-control panel and contact point form thereof.
Background technology
Along with the fast development of computer technology, contact panel also applies to mobile phone screen, computer screen, PDA(Personal Digital Assistant) screen widely.Basically, contact panel can be used as computer input device and is used for replacing mouse.Then general in the contact panel at present with the utilization of electric resistance touch-control panel.
Please refer to Figure 1A, its illustrate is the side view of known electric resistance touch-control panel.On the surface of clear glass (glass) substrate 100, form a plurality of strip indium tin oxidation (Indium Tin Oxide is called for short ITO) layer 102; In addition, on the surface of a transparent membrane (film) 110, form a plurality of strip ITO layers 112; Wherein, the strip ITO layer on the transparent glass substrate 100 102 is orthogonal with the strip ITO layer 112 on the transparent membrane 110.In addition, strip ITO layer 102 on a plurality of transparent isolating points (spacer dot) 120 isolation transparent glass substrates and the strip ITO layer 112 on the transparent membrane 110 make it can not contact with each other.
When the user pushed transparent membrane (film) 110 with finger or pointer, the strip ITO layer 112 on the transparent membrane (film) 110 can distortion and is touched strip ITO layer 102 on the transparent glass substrate 100.And the control circuit of contact panel (not illustrating) can calculate the contacting points position that the user pushes.
Please refer to Figure 1B, its illustrate is known electric resistance touch-control panel vertical view.For instance, contact panel 10 around dispose four electrodes, a negative Y electrode Y-, a positive Y electrode Y+, a negative X electrode X-and a positive X electrode X+.In addition, the strip ITO layer 102 on the glass substrate presents the arrangement of vertical direction, and two ends of all strip ITO layers 102 are connected to negative Y electrode Y-and positive Y electrode Y+ respectively; And the strip ITO layer 112 on the transparent membrane 110 presents the arrangement of horizontal direction, and two ends of all strip ITO layers 112 are connected to a negative X electrode X-and a positive X electrode X+ respectively.Wherein, all strip ITO layers 102,112 can equivalence be resistance all.
In addition, control circuit 150 utilizes Y-line, Y+ line, X-line, X+ line distinctly to be connected to negative Y electrode Y-, positive Y electrode Y+, negative X electrode X-and positive X electrode X+.When the user produced contact point on contact panel 10, control circuit 150 can be learnt the position of contact point fast.
Please refer to Fig. 2 A, its illustrate is for detecting the synoptic diagram that whether produces contact point on the known electric resistance touch-control panel.At first, in order to learn whether the user has the contact contact panel, control circuit (not illustrating) can be connected to positive X electrode X+ with a voltage source Vcc, earth terminal is connected to negative Y electrode Y-, to bear X electrode X-and be connected to control circuit in order to voltage Va to be provided, and, do not connect (open) positive Y electrode Y+.
Clearly, when the user did not push contact panel, strip ITO layer did not up and down contact.Therefore, control circuit can equal voltage vcc in the voltage Va that negative X electrode X-receives, and, representative does not have the user to push contact panel as yet yet.
When the user utilized pointer 140 to push contact panel, strip ITO layer up and down was contacted with contact point A.Therefore, control circuit detect negative X electrode X-receive voltage less than Vcc (
), also, can determine that the user has pushed contact panel this moment, also is that control circuit finds that one touches action and produces.Contact resistance when wherein Rz is two strip ITO layer contacts.
Please refer to Fig. 2 B, its illustrate is into calculating the synoptic diagram of contact point horizontal level on the known electric resistance touch-control panel.Control circuit learn the user produce one touch action after, control circuit can be proceeded the calculating of contacting points position.In order to learn the horizontal level of contact point, when control circuit detects generation contact point A, control circuit can carry out change action, one voltage source Vcc is connected to positive X electrode X+, earth terminal is connected to negative X electrode X-, positive Y electrode Y+ is connected to control circuit with reception voltage Vx, and, (open) negative Y electrode Y-do not connected.
Clearly, the voltage on the positive Y electrode Y+ is
。By Fig. 2 B as can be known, when contact point A can be high more the closer to right side voltage Vx; Otherwise, when contact point A can be low more the closer to left side voltage Vx.Therefore, control circuit can carry out Vx voltage analog-to-digital conversion (analog to digitalconversion) and the horizontal level of acquisition contact point.
In like manner, please refer to Fig. 2 C, its illustrate is into calculating the synoptic diagram of contact point upright position on the known electric resistance touch-control panel.In order to learn the upright position of contact point A, calculate the horizontal level of contact point A when control circuit after, control circuit can carry out change action once more, one voltage source Vcc is connected to positive Y electrode Y+, earth terminal is connected to negative Y electrode Y-, positive X electrode X+ is connected to control circuit with reception voltage Vy, and, (open) negative X electrode X-do not connected.
Clearly, the voltage on the positive X electrode X+ is
。By Fig. 3 C as can be known, when contact point A the closer to the upper end, voltage Vy can be high more; Otherwise, when contact point A the closer to the lower end, voltage Vy can be low more.Therefore, control circuit can carry out Vy voltage analog-to-digital conversion (analog todigital conversion) and the upright position of acquisition contact point.
Clearly, above-mentioned contact panel is surrounded as a surveyed area by four electrodes (negative Y electrode, positive Y electrode, negative X electrode and positive X electrode).In addition, Fig. 2 A is used for judging whether this surveyed area has generation to touch action.When action was touched in generation, control circuit can be proceeded the step of Fig. 2 B and Fig. 2 C, in order to obtain the horizontal level and the upright position of contact point.Otherwise when not producing contact point, control circuit can continue at the state of Fig. 2 A and wait for the generation of touching action.
Because above-mentioned electric resistance touch-control panel is the contact panel that belongs to analog, therefore, when the user simultaneously when contact panel produces a plurality of contact point, control circuit can't be correct detects a plurality of contact points and can calculate the contact point of an output error.For instance, please refer to Fig. 3, its illustrate is into producing the synoptic diagram of a plurality of contact points on the known electric resistance touch-control panel.This surveyed area 160 is formed by four electrodes (not illustrating) definition.When the user produces contact point A1 and contact point A2 in this surveyed area 160 simultaneously.Suppose the horizontal level of contact point A1 and upright position for (x1, y1) and the horizontal level of contact point A2 and upright position be (x2, y2), then control circuit can calculate the contact point A3 of mistake, wherein the horizontal level of A3 and upright position be (
)。
In order to detect a plurality of contact points on electric resistance touch-control panel, the structure of new electric resistance touch-control panel is developed.Please refer to Fig. 4 A, its illustrate is for detecting the electric resistance touch-control panel synoptic diagram of many contact points.Comprising four groups of (group) electrode X1+～X3+, X1～X3-, Y1+～Y4+, Y1-～Y4-.In addition, this electric resistance touch-control panel only is divided into three electrodes with positive X group (X+group) and negative X group (X-group) individual regions, is example and positive Y group (Y+group) is divided into four electrodes with negative Y group (Y-group) individual regions.Certainly, the number of differentiation also can have any combination, is not limited to combination shown in Figure 4.
In Fig. 4 A, three electrodes of positive X group (X+group) are positive X one electrode X1+, positive X two electrode X2+ and positive X three electrode X3+; Three electrodes of negative X group (X-group) are negative X one electrode X1-, negative X two electrode X2-and negative X three electrode X3-; Four electrodes of positive Y group (Y+group) are positive Y one electrode Y1+, positive Y two electrode Y2+, positive Y three electrode Y3+ and positive Y four electrode Y4+; Four electrodes of negative Y group (Y-group) are negative Y one electrode Y1-, negative Y two electrode Y2-, negative Y three electrode Y3-and negative Y four electrode Y4-.Clearly, four groups of above-mentioned (group) electrodes can produce 12 surveyed areas.For instance, positive X one electrode X1+, negative X one electrode X1-, positive Y one electrode Y1+, negative Y one electrode Y1-can form surveyed area D
11, then the rest may be inferred for all the other.
In addition, multiplexed commutation circuit 230 is connected to all electrodes, and can optionally the X+ line be connected to part or all of electrode in the X+ group according to the control signal of control circuit 250; The X-line is connected to part or all of electrode in the X-group; The Y+ line is connected to part or all of electrode in the Y+ group; The Y-line is connected to part or all of electrode in the Y-group.
Below in detail introduction can detect the action of the contact panel of many contact points.Please refer to Fig. 4 B, the equivalent electrical circuit of its illustrate when detecting the contact point program.Touch action in order to learn whether the user has to produce on contact panel 200, control circuit 250 control X+ lines are connected to whole electrode in the X+ group; The X-line is connected to whole electrode in the X-group; The Y+ line is connected to whole electrode in the Y+ group; The Y-line is connected to whole electrode in the Y-group.In addition, control circuit 250 can carry out the change action first time, and a voltage source Vcc is connected to the X+ line, and earth terminal is connected to the Y-line, with the signal of X-line as judging signal, and, do not connect (open) Y+ line.At this moment, control circuit 250 can detect whether All Ranges has generation to touch action on the contact panel 200.Its judgment mode is identical with Fig. 2 A, repeats no more.
For instance, when control circuit 250 learn the user produce touch action (for example contact point B1) after, the multiplexed commutation circuit 230 of control signal may command on the control circuit 250 is connected to 12 surveyed areas with X-line, X+ line, Y-line, Y+ line in regular turn, and detects on 12 surveyed areas whether produce contact point.At last, shown in Fig. 4 C, the surveyed area D that is arranged in pairs or groups in positive Y one electrode Y1+, negative Y one electrode Y1-, positive X three electrode X3+, negative X three electrode X3-
31On can obtain contact point B1, and can calculate horizontal level and the upright position of contact point B1.And the account form of contact point B1 position is identical with Fig. 2 C with Fig. 2 B, therefore repeats no more.
In like manner, as shown in Figure 5, when the user produced a plurality of contact points (for example contact point B1, B2, B3) simultaneously, control circuit 250 can be learnt that the user produces and touch action.And at this moment, control circuit 250 also can't learn that the user produces single contact point or a plurality of contact point.
Then, the multiplexed commutation circuit 230 of the control signal may command on the control circuit 250 is connected to 12 surveyed areas in regular turn with X-line, X+ line, Y-line, Y+ line, and detects on 12 surveyed areas whether produce contact point.At last, can learn surveyed area D
13, surveyed area D
31, surveyed area D
33On a contact point is respectively arranged, and control circuit can calculate surveyed area D
13The position of middle contact point B2, surveyed area D
31The position of middle contact point B1, surveyed area D
34The position of middle contact point B3.
Under some particular condition, the user may produce a plurality of contact points accidentally, and the known control circuit that detects the contact panel of many contact points also can come out a plurality of touch point position calculation.Please refer to Fig. 6, when the user utilizes pointer 140 to operate, usually finger 130 or palm 135 can be placed on the contact panel 200.At this moment, control circuit can calculate a plurality of contact points, yet the contact point that palm and finger presses are produced not is effective contact point.Therefore, how on the contact panel that can detect many contact points, utilize control circuit to judge the form of contact point, and further utilize the form of contact point to decide effective contact point and non-effective contact point to be the problem that institute of the present invention desire solves.
Summary of the invention
The present invention proposes a kind of detection method of electric resistance touch-control panel contact point form in order to solve prior art problems.Have a plurality of surveyed areas on this electric resistance touch-control panel.When the method comprises the following steps: to find to have contact action to produce, obtain a plurality of contacting points positions on a contact panel; When these contact points were positioned at adjacent surveyed area, judging that these contact points could merge became one and merges contact point; And can merge in these contact points becomes when merging contact point, judges that this merges contact point is the contact point of one first form or the contact point of one second form.
The present invention also proposes a kind of electric resistance touch-control panel, comprising: a first direction first electrode group comprises the m electrode; One first direction, the second electrode group comprises the m electrode; One second direction, the first electrode group comprises n electrode; One second direction, the second electrode group comprises n electrode, and wherein 2m+2n electrode can separate this electric resistance touch-control panel and be m * n surveyed area; One multiplexed commutation circuit is connected to all 2m+2n electrode; And, one control circuit, be connected to this multiplexed commutation circuit, can be after a touch action produces, judging whether a plurality of contact points can merge becomes one and merges contact point, and in confirming that described a plurality of contact points can merge into one when merging contact point, distinguish this merging contact point the contact point that is first form or the contact point of second form.
The present invention can judge apace whether a plurality of contact points can merge to be become one and merges contact point, and can further this merging contact point zone be divided into the contact point of first form or the contact point of second form.
In order to make the auditor can further understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet appended accompanying drawing only provide with reference to and explanation, be not to be used for the present invention is limited.
Description of drawings
Figure 1A illustrate is the side view of known electric resistance touch-control panel.
Figure 1B illustrate is known electric resistance touch-control panel vertical view.
Fig. 2 A illustrate is for detecting the synoptic diagram that whether produces contact point on the known electric resistance touch-control panel.
Fig. 2 B illustrate is into calculating the synoptic diagram of contact point horizontal level on the known electric resistance touch-control panel.
Fig. 2 C illustrate is into calculating the synoptic diagram of contact point upright position on the known electric resistance touch-control panel.
Fig. 3 illustrate is into producing the synoptic diagram of a plurality of contact points on the known electric resistance touch-control panel.
Fig. 4 A illustrate is for detecting the electric resistance touch-control panel synoptic diagram of many contact points.
Fig. 4 B and Fig. 4 C illustrate equivalent electrical circuit when detecting the contact point program.
Fig. 5 illustrate is for detecting the synoptic diagram of a plurality of contact points at electric resistance touch-control panel.
Fig. 6 illustrates the operation chart on contact panel into the user.
Fig. 7 A illustrate forms the synoptic diagram of contact point into utilizing finger.
Fig. 7 B illustrate forms the synoptic diagram of contact point for utilizing pointer.
Fig. 8 illustrate is for detecting the electric resistance touch-control panel synoptic diagram of many contact points.
Fig. 9 illustrate is the method for difference contacting points position.
Figure 10 A～Figure 10 D is the synoptic diagram of various different contact points.
Figure 11 A illustrate is determination methods first embodiment of contact point form of the present invention.
Figure 11 B illustrate is determination methods second embodiment of contact point form of the present invention.
Wherein, description of reference numerals is as follows:
10 contact panels
100 transparent glass substrates, 102 ITO layers
110 transparent membranes, 112 ITO layers
120 transparent isolating points 130 fingers
140 pointer
150 control circuits, 160 surveyed areas
200 contact panels, 230 multiplexed commutation circuits
250 control circuits
800 contact panels, 830 multiplexed commutation circuits
850 control circuits
Embodiment
Please refer to Fig. 7 A, its illustrate forms the synoptic diagram of contact point into utilizing finger.When utilizing finger 130 to press,, therefore, can make that strip ITO layer 112,102 contact area are bigger up and down because contact area is bigger by contact panel; In like manner, the contact point that utilizes palm (palm) to produce can make that too strip ITO layer 112,122 contact area are bigger up and down.In addition, please refer to Fig. 7 B, its illustrate forms the synoptic diagram of contact point for utilizing pointer 140.Because the nib area of pointer is little, when therefore utilizing pointer to press by contact panel, strip ITO layer contact area can be less up and down.And the present invention promptly utilizes this characteristic to judge that contact point is the contact point of first form or the contact point of second form, and wherein, the contact point of first form is the small size contact point, for example pointer contact point, sticker contact point, nib contact point; The contact point of second form is the large tracts of land contact point, for example points contact point, palm contact point.
In general, in order to detect a plurality of contact points accurately, can detect now on the electric resistance touch-control panel of many contact points and must divide a lot of surveyed areas.In other words, just the length of the electrode on X group (X+group), X group (X-group), positive Y group (Y+group) and the negative Y group (Y-group) can be very short, make that the surveyed area on the contact panel increases, and the area of each surveyed area can reduce.
Please refer to Fig. 8, its illustrate is for detecting the electric resistance touch-control panel synoptic diagram of many contact points.Comprising four groups of (group) electrodes: the directions X first electrode group (X1+～Xm+), the directions X second electrode group (X1-～Xm-), the Y direction first electrode group (Y1+～Yn+), the Y direction second electrode group (Y1-～Yn-).Therefore, whole electric resistance touch-control panel 800 can be divided into m * n surveyed area.
In addition, multiplexed commutation circuit 830 is connected to all electrodes, and can optionally the X+ line be connected to part or all of electrode in the X+ group according to the control signal of control circuit 850; The X-line is connected to part or all of electrode in the X-group; The Y+ line is connected to part or all of electrode in the Y+ group; The Y-line is connected to part or all of electrode in the Y-group.
In addition, when surveyed area area hour,, will be pressed into the border of surveyed area easily, and make adjacent surveyed area produce contact point simultaneously if during with finger or palm touching contact panel.Also promptly, when a plurality of contact points are not during at adjacent surveyed area, then can directly export a plurality of contact points; Otherwise,, then must further judge when a plurality of contact points during at adjacent surveyed area.
Please refer to Fig. 9, its illustrate is the method for difference contacting points position.Touch action when producing when control circuit still finds no,, detect constantly and touch action as step S901.When control circuit finds to touch the action generation, as step S901, then will calculate contacting points position, and obtain a plurality of contacting points positions, as step S902.
Then, judge whether above-mentioned contact point is positioned at adjacent surveyed area, as step S903.When step S903 is false, directly export described a plurality of contacting points position, as step S904; Otherwise when step S903 set up, the described a plurality of contact points of continuation judgement could merge became a merging contact point, as step S905.
When judging that contact point can not merge,, directly export described a plurality of contacting points position, as step S904 as step S905.When judging that contact point can merge, during as step S905, then export one and merge contact point.
Followingly come the flow process of key drawing 9 according to Figure 10 A～contact point example of Figure 10 D.Wherein, the contact point among Figure 10 A and Figure 10 B can't become a merging contact point.And the contact point among Figure 10 C and Figure 10 D can merge and becomes one and merge contact point
Shown in Figure 10 A, in touching action when producing, as step S901, control circuit 850 can calculate contact point p1 position, the surveyed area (b1) of surveyed area (a1) contact point p2 position, with the contact point p3 position of surveyed area (c1), as step S902.Because surveyed area (a1), (b1), (c1) are not adjacent surveyed areas, as step S90, therefore, control circuit 850 can directly be exported contact point p1 position, contact point p2 position, contact point p3 position, as step S904.
Shown in Figure 10 B, when touching the action generation, as step S901, control circuit 850 can calculate the contact point p4 position of surveyed area (a2), the contact point p5 position of surveyed area (b2).Because surveyed area (a2), (b2) are adjacent surveyed areas, as step S903, therefore, control circuit 850 continues to judge whether contact point p4 and p5 can merge, as step S904.
In judging that contact point could combining step, in step S904, can in control circuit, preset one first and face limit for length's degree Lth1, and with the distance comparison of contact point p4p5.When the distance of contact point p4p5 was faced limit for length's degree Lth1 greater than first, then contact point p4p5 can not merge, and export contact point p4 position and contact point p5 position this moment, as step S904.
The finger contact point 910 of Figure 10 C is an example.When touching the action generation, as step S901, control circuit 850 can calculate the contact point p6 position of surveyed area (a3), the contact point p7 position of surveyed area (b3).Because surveyed area (a3), (b3) are adjacent surveyed areas, as step S903, therefore, control circuit 850 continues to judge whether contact point p6 and p7 can merge, as step S904.
In judging that contact point could combining step, in step S904, can in control circuit, preset one first and face limit for length's degree Lth1, and with the distance comparison of contact point p6p7.Clearly, finger contact point 910 respectively produces a contact point p6, p7 in adjacent surveyed area (a3) on (b3), and the distance of contact point p6p7 is faced limit for length's degree Lth1 less than first.Therefore, contact point p6p7 can merge, and exports a merging contact point, as step S906.That is to say, suppose contact point p6 position for (x6, y6) and contact point p7 position be (x7, y7), the position that then merges contact point be (
)。
The finger contact point 920 of Figure 10 C (d3) produces contact point p8, p9 in adjacent surveyed area (c3), and the distance of contact point p8p9 is faced limit for length's degree Lth1 less than first.Therefore, contact point p8p9 can merge, and exports a merging contact point, as step S906.That is to say, suppose contact point p8 position for (x8, y8) and contact point p9 position be (x9, y9), the position that then merges contact point be (
)。
The finger contact point 930 of Figure 10 C in adjacent surveyed area (e3) (f3) (g3) produce contact point p10, p11, p12, and the distance of wantonly two contact points is all faced limit for length's degree Lth1 less than first.Therefore, contact point p10p11p12 can merge, and exports a merging contact point, as step S906).That is to say, suppose contact point p10 position for (x10, y10), contact point p11 position be (x11, y11), contact point p12 position be (x12, y12), the position that then merges contact point be (
)。
The finger contact point 940 of Figure 10 C in adjacent surveyed area (h3) (i3) (j3) (k3) produce contact point p13, p14, p15, p16, and the distance of wantonly two contact points is all faced limit for length's degree Lth1 less than first.Therefore, contact point p13p14p15p16 can merge, and exports a merging contact point, as step S906.That is to say, suppose contact point p13 position for (x13, y13), contact point p14 position be (x14, y14), contact point p15 position be (x15, y15), contact point p16 position be (x16, y16), the position that then merges contact point be (
)。
In like manner, when the pointer contact point is contacted with the surveyed area border of contact panel, and make adjacent surveyed area produce contact point simultaneously.Two contacting points positions that the pointer contact point 960 of Figure 10 D can be given birth in adjacent surveyed area (a4) and surveyed area (b4), this two contact point can be very close.Clearly, the distance of two contact points that produced of pointer contact point 960 is faced limit for length's degree Lth1 less than first.Therefore, two contact points can merge, and export a merging contact point, as step S906.
Two contacting points positions that the pointer contact point 970 of Figure 10 D can be given birth in adjacent surveyed area (c4) and surveyed area (d4), this two contact point can be very close.Clearly, the distance of two contact points that produced of pointer contact point 970 is faced limit for length's degree Lth1 less than first.Therefore, two contact points can merge, and export a merging contact point, as step S906.
The pointer contact point 980 of Figure 10 D is in adjacent surveyed area (e4), surveyed area (f4) and three living contacting points positions of surveyed area (g4) meeting, and this three contact point can be very close.Clearly, the distance of wantonly two contact points that produced of pointer contact point 970 is all faced limit for length's degree Lth1 less than first.Therefore, three contact points can merge, and export a merging contact point, as step S906.
The pointer contact point 990 of Figure 10 D is in adjacent surveyed area (h4), surveyed area (i4), surveyed area (j4) and four living contacting points positions of surveyed area (k4) meeting, and this four contact point can be very close.Clearly, the distance of wantonly two contact points that produced of pointer contact point 970 is all faced limit for length's degree Lth1 less than first.Therefore, four contact points can merge, and export a merging contact point, as step S906.
When control circuit 850 produced the merging contact point, control circuit 850 can further be judged the form that merges contact point.Please refer to Figure 11 A, its illustrate is determination methods first embodiment of contact point form of the present invention.Confirm to merge into one when a plurality of contact points and merge contact point, behind step S1100, that utilizes that described a plurality of contact point merges contact point therewith faces range line from the Lth2 comparison apart from summation and one second.
When described a plurality of contact points when merging the facing the limit for length and spend less than second of contact point apart from summation, as step S1101, this merging contact point contact point that is one first form then is as step S1102; Otherwise, when described a plurality of contact points when merging the facing the limit for length and spend greater than second of contact point apart from summation, as step S1101, this merging contact point contact point that is one second form then is as step S1103.
Therefore, the present invention and then obtains a plurality of contacting points positions after finding that touch action produces.When being detected a plurality of contact point simultaneously on the adjacent detection area on border, deciding these contact points to merge with these contact point number and contact point distance becomes a merging contact point, and can judge the form that merges contact point further.
In addition, determining step S1101 can utilize other judgment mode to realize.Please refer to Figure 11 B, its illustrate is determination methods second embodiment of contact point form of the present invention.Step S1104 utilizes and faces range line from Lth2 relatively apart from summation and one second between described a plurality of contact point.When between described a plurality of contact points face range line from Lth2 apart from summation less than second the time, as step S1104, this merging contact point contact point that is one first form then is as step S1102; Otherwise when facing the limit for length and spend greater than second apart from summation between described a plurality of contact points, as step S1104, this merging contact point contact point that is one second form then is as step S1103.
Clearly, can be learnt by Figure 10 C and Figure 10 D that the finger contact point touches when the border of adjacent detection area, the distance between its contact point is longer; Otherwise the pointer contact point touches when the border of adjacent detection area, and the distance between its contact point is shorter.Utilize this characteristic to preset one second and face limit for length's degree, can merge in described a plurality of contact points becomes a form of judging this merging contact point when merging contact point further.
According to first and second embodiment of the present invention, the invention has the advantages that provides a kind of electric resistance touch-control panel and contact point form detection method thereof.When producing contact point in a plurality of adjacent detection area, can judge apace whether described a plurality of contact point can merge becomes one and merges contact point.After confirming to become a merging contact point, can further this merging contact point zone be divided into the contact point of first form or the contact point of second form.
In sum; though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any those of ordinary skills; without departing from the spirit and scope of the present invention; when can doing various changes and retouching, so protection scope of the present invention is as the criterion when looking the scope that appending claims defines.
Claims (11)
1. the contact point form detection method of an electric resistance touch-control panel has a plurality of surveyed areas on this electric resistance touch-control panel, comprises the following steps:
When on a contact panel, finding to have a contact action to produce, obtain a plurality of contact points;
When described a plurality of contact points were positioned at adjacent surveyed area, judging that described a plurality of contact point could merge became one and merges contact point; And
Can merge when becoming this merging contact point in described a plurality of contact points, judge the contact point that this merging contact point is one first form or the contact point of one second form.
2. contact point form detection method as claimed in claim 1 also comprises: when described a plurality of contact points are not positioned at adjacent surveyed area, export described a plurality of contact point.
3. contact point form detection method as claimed in claim 1 also comprises: when described a plurality of contact points can not merge when becoming this merging contact point, export described a plurality of contact point.
4. contact point form detection method as claimed in claim 1, wherein in judging that described a plurality of contact points could merge in the step that becomes a merging contact point, also comprise:
When the distance between wantonly two contact points in described a plurality of contact points was faced the limit for length and spent less than one first, described a plurality of contact points can merge became this merging contact point.
5. contact point form detection method as claimed in claim 1, wherein can merge in described a plurality of contact points becomes in the step when merging contact point, also comprises:
Obtain the position of this merging contact point;
Calculate described a plurality of contact point and this merging contact point one apart from summation;
When this faced the limit for length and spend less than one second apart from summation, this merges contact point was the contact point of this first form; And
When this apart from summation greater than this second when facing the limit for length and spending, this merges contact point is the contact point of this second form.
6. contact point form detection method as claimed in claim 1 wherein in described a plurality of contact points can merge step when becoming this merging contact point, also comprises:
Calculate one between described a plurality of contact point apart from summation;
When this faced the limit for length and spend less than one second apart from summation, this merges contact point was the contact point of this first form; And
When this apart from summation greater than this second when facing the limit for length and spending, this merges contact point is the contact point of this second form.
7. contact point form detection method as claimed in claim 1, wherein, the contact point of this first form is a small size contact point, and the contact point of this second form is a large tracts of land contact point.
8. contact point form detection method as claimed in claim 1, wherein, the contact point of this first form is a pointer contact point, a nib contact point or a sticker contact point; And the contact point of this second form is a proficiency finger contact or a palm contact point.
9. electric resistance touch-control panel comprises:
One first direction, the first electrode group comprises the m electrode;
One first direction, the second electrode group comprises the m electrode;
One second direction, the first electrode group comprises n electrode;
One second direction, the second electrode group comprises n electrode, and wherein 2m+2n electrode can separate this electric resistance touch-control panel and be m * n surveyed area;
One multiplexed commutation circuit is connected to all 2m+2n electrode; And
One control circuit, be connected to this multiplexed commutation circuit, after a touch action produces, judging whether a plurality of contact points can merge becomes one and merges contact point, and in confirming that described a plurality of contact points can merge into one when merging contact point, distinguish this merging contact point the contact point that is one first form or the contact point of one second form.
10. electric resistance touch-control panel as claimed in claim 9, wherein, the contact point of this first form is a small size contact point, and the contact point of this second form is a large tracts of land contact point.
11. electric resistance touch-control panel as claimed in claim 9, wherein, the contact point of this first form is a pointer contact point, a nib contact point or a sticker contact point; And the contact point of this second form is a proficiency finger contact or a palm contact point.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101597682A CN101604220B (en) | 2009-07-20 | 2009-07-20 | Resistance-type touch panel and method for detecting contact point form thereof |
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| CN2009101597682A CN101604220B (en) | 2009-07-20 | 2009-07-20 | Resistance-type touch panel and method for detecting contact point form thereof |
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| CN101604220A true CN101604220A (en) | 2009-12-16 |
| CN101604220B CN101604220B (en) | 2012-01-11 |
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