CN101464767A - Touching control panel - Google Patents
Touching control panel Download PDFInfo
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- CN101464767A CN101464767A CNA2007103001877A CN200710300187A CN101464767A CN 101464767 A CN101464767 A CN 101464767A CN A2007103001877 A CNA2007103001877 A CN A2007103001877A CN 200710300187 A CN200710300187 A CN 200710300187A CN 101464767 A CN101464767 A CN 101464767A
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Abstract
The invention relates to a touch panel, which includes a resistance-type panel module and a detection module. The resistance-type panel module is provided with a first conducting path and a second conducting path. When multipoint touch happens, the first conducting path and the second conducting path have multipoint conduction. The detection module is coupled with the resistance-type panel module, and used for detecting the changing situation of the resistance value between a first end and a second end of the first conducting path, so as to evaluate the touch situation of multipoint conduction. Therefore, the changing situation of the resistance value can be taken as an input signal of a human-computer interface, so as to control an electronic device.
Description
Technical field
The present invention relates to a kind of electric resistance touch-control panel, and particularly relevant for a kind of multi-point touch detection technique.
Background technology
Fast development and application along with infotech, wireless mobile communication and information household appliances, to carry more convenient, lighter and handyizatioier of volume and operate more humane purpose in order to reach, many information products change into and use contact panel (Touch Panel) as input media by input medias such as traditional keyboard or mouses.
At present, contact panel can be divided into two types according to its type of drive and structural design, and one is the resistance-type panel module, and another is the capacitive panels module.With the resistance-type panel module, the user needs actual applying pressure on the resistance-type panel module, so that the subregion conducting of resistance-type panel module inside and produce corresponding coordinate signal, so the spoilage of resistance-type panel module is higher.Below cooperate graphic at the further explanation of the employed single-point contact detection technique do of existing resistance-type panel module.
Fig. 1 is the synoptic diagram of resistance-type panel module.Please refer to Fig. 1, resistance-type panel module 10 is made of 20,21 of electrically-conductive backing plates.Electrically- conductive backing plate 20,21 has transparent resistive layer respectively, and between electrically-conductive backing plate 20 and the electrically-conductive backing plate 21 minimum gap is arranged, and makes electrically- conductive backing plate 20,21 not conductings mutually.Electrically-conductive backing plate 20 has both sides, is respectively X+ side and X-side.Electrically-conductive backing plate 21 has both sides, is respectively Y+ side and Y-side.
Fig. 2 be existing contact panel when single-point contact, measure the principle schematic of Y direction coordinate.Please merge with reference to Fig. 1 and Fig. 2, when the P of touch-control interface (not shown) point was touched, the relative position that electrically- conductive backing plate 20,21 can be ordered at P contacted with each other, thereby conducting mutually.Then, detection module 30 can measure the coordinate of P point in directions X and Y direction respectively.
At the coordinate time that measures the Y direction, the X-side can switch to open-circuit condition.121 conductings of control signal C1 meeting gauge tap are to provide voltage+VCC to Y+ side.In addition, 122 conductings of control signal C2 meeting gauge tap are to provide ground voltage GND to Y-side.Then, by 40 voltage differences that measure between X+ side and the Y-side of analog-digital converter (Analog To Digital Converter).Because the voltage difference between X+ side and the Y-side is proportional to the coordinate of Y direction, therefore can estimate the coordinate of P point in the Y direction by the voltage difference between X+ side and the Y-side.The P point does not repeat them here in the estimation mode of directions X coordinate by that analogy.
It should be noted that existing resistance-type panel module only can carry out sensing at single-point contact.When being subjected to multiple spot and exerting pressure, existing resistance-type panel module can't be made a response.So existing resistance-type panel module can't satisfy the consumer for the diversified demand of product function.
Summary of the invention
The object of the invention provides a kind of contact panel, can measure the multi-point touch situation.
The invention provides a kind of contact panel, can assess the multi-point touch situation according to the change in resistance situation of guiding path in the resistance-type panel module.
The present invention proposes a kind of contact panel, comprises resistance-type panel module, divider resistance, selector switch and detection module.The resistance-type panel module has first guiding path and second guiding path.One termination of divider resistance is received voltage source.Selector switch connects the other end of divider resistance, and connects first guiding path and the second guiding path two ends.Detection module couples selector switch.When the multi-point touch incident takes place when, the then mutual conducting of multiple spot of first guiding path and second guiding path, selector switch selects first guiding path to connect with divider resistance, and detects the two ends of first guiding path with detection module, with the touching situation of assessment multi-point touch incident.
In one embodiment of this invention, selector switch comprises first multiplexer, second multiplexer and the 3rd multiplexer.First multiplexer has first input end, second input end and output terminal and connects first end of first guiding path, first end and the divider resistance of second guiding path respectively.Second multiplexer has first input end, second input end and output terminal and connects first end of first guiding path, first end and the detection module of second guiding path respectively.The 3rd multiplexer has first input end, second input end and output terminal and connects second end of first guiding path, second end and the detection module of second guiding path respectively.
In one embodiment of this invention, detection module is an analog-digital converter, has the first input end and second input end and couples the output terminal of second multiplexer and the output terminal of the 3rd multiplexer respectively.
In one embodiment of this invention, detection module detects the two ends of first guiding path, measures the voltage or the resistance at the first guiding path two ends, with the phase mutual edge distance of estimation multi-point touch incident.In another embodiment,, set up form, find out the phase mutual edge distance of resistance correspondence by looking into this form according to the touching situation of resistance assessment multi-point touch incident.In another embodiment, when the form no datat,, carry out the interpolation method and obtain corresponding phase mutual edge distance then with two resistances of the form of adjacent resistance.In an embodiment more, the multi-point touch incident is 2 contacts.
In one embodiment of this invention, the resistance-type panel module comprises first electrically-conductive backing plate and second electrically-conductive backing plate.First electrically-conductive backing plate has first guiding path along first direction.Parallel first electrically-conductive backing plate of second electrically-conductive backing plate.Second electrically-conductive backing plate has second guiding path along second direction, and wherein first direction and second direction are orthogonal.In another embodiment, the resistance-type panel module is the resistance-type panel module of four-wire type.
From another viewpoint, the invention provides a kind of contact panel, comprise resistance-type panel module, first divider resistance, second divider resistance, selector switch and detection module.The resistance-type panel module has first guiding path and second guiding path.One end of first divider resistance couples first guiding path.One end of second divider resistance couples second guiding path.Selector switch receives voltage source.Selector switch connects the other end of first divider resistance and the other end of second divider resistance, and connects the first guiding path two ends and the second guiding path two ends.Detection module couples selector switch.When the multi-point touch incident takes place when, the then mutual conducting of multiple spot of first guiding path and second guiding path, selector switch selects voltage source to couple first divider resistance, and detects the two ends of first guiding path with detection module, with the touching situation of assessment multi-point touch incident.
In one embodiment of this invention, selector switch comprises first multiplexer, second multiplexer and the 3rd multiplexer.First multiplexer has first input end, second input end and output terminal and connects the other end of first divider resistance, the other end and the voltage source of second divider resistance respectively.Second multiplexer has first input end, second input end and output terminal and connects first end of first guiding path, first end and the detection module of second guiding path respectively.The 3rd multiplexer has first input end, second input end and output terminal and connects second end of first guiding path, second end and the detection module of second guiding path respectively.
When the multi-point touch incident takes place, in the resistance-type panel module subregion of first guiding path can with the subregion multipoint-parallel of the second guiding path warp, so the resistance of first guiding path can descend.The present invention is by measuring the change in resistance or the change in voltage situation of first guiding path, with the touching situation of assessment multi-point touch incident.Therefore, above-mentioned change in resistance situation can be used as the input signal of man-machine interface, with the control electronic installation.
Beneficial effect of the present invention is the change in resistance situation of guiding path in the throughput measuring resistance formula panel module of the present invention, with the touching situation of assessment multi-point touch incident.Therefore, above-mentioned change in resistance situation can be used as the input signal of man-machine interface, with the control electronic installation.
For above-mentioned feature and advantage of the present invention can be become apparent, several embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 is the synoptic diagram of resistance-type panel module;
Fig. 2 be existing contact panel when single-point contact, measure the principle schematic of Y direction coordinate;
Fig. 3 A be the contact panel of the first embodiment of the present invention when not touching for 2, the equivalent circuit diagram of resistance-type panel module;
Fig. 3 B is Fig. 3 A when 2 touchings, the equivalent circuit diagram of resistance-type panel module;
Fig. 4 A is the synoptic diagram according to the contact panel of the first embodiment of the present invention;
Fig. 4 B is the process flow diagram according to the multi-point touch detection method of the first embodiment of the present invention;
Fig. 5 A is according to a kind of selector switch of the first embodiment of the present invention and the synoptic diagram of detection module;
Fig. 5 B is according to the another kind of selector switch of the first embodiment of the present invention and the synoptic diagram of detection module.
Embodiment
Touch points position when existing resistance-type panel module only can detect single-point contact.When the multi-point touch incident takes place, existing resistance-type panel module can't be made a response.In view of this, when the multi-point touch incident took place, embodiments of the invention utilized the impedance (voltage) of resistance-type panel module to change the touching situation that situation is assessed the multi-point touch incident.
First embodiment
Please earlier with reference to Fig. 1, the multi-point touch incident of present embodiment is that example describes with 2 touch events, and resistance-type panel module 10 is that example describes with the resistance-type panel module of four-wire type.The touch points of supposing 2 touch events is respectively at the P1 at touch-control interface point and P2 point (not shown), when the P1 point is touched, the Px1 point of electrically-conductive backing plate 20 then can with the Py1 point conducting of electrically-conductive backing plate 21.When the P2 point is touched, the Px2 point of electrically-conductive backing plate 20 then can with the Py2 point conducting of electrically-conductive backing plate 21.
Fig. 3 A be the contact panel of the first embodiment of the present invention when not touching for 2, the equivalent circuit diagram of resistance-type panel module.Fig. 3 B is Fig. 3 A when 2 touchings, the equivalent circuit diagram of resistance-type panel module.Please merge with reference to Fig. 1, Fig. 3 A and Fig. 3 B.Hypothesis Px1 point is than the close X+ side of Px2 point in the present embodiment, and the Px2 point is than the close X-side of Px1 point, and the Py1 point is than the close Y+ side of Py2 point, and the Py2 point is than the close Y-side of Py1 point.
Among Fig. 3 A and Fig. 3 B, resistance 101 is the equivalent resistance between Y+ side and the Py1 point, and resistance 102 is the equivalent resistance between electrically-conductive backing plate 21 for Py1 point and Py2 point, and resistance 103 is the equivalent resistance between Py2 point and the Y-side.In like manner, resistance 104 is the equivalent resistance between X+ side and the Px1 point, and resistance 105 is the equivalent resistance between electrically-conductive backing plate 20 for Px1 point and Px2 point, and resistance 106 is the equivalent resistance between Px2 point and the X-side.In addition, among Fig. 3 B, resistance 107 is the equivalent resistance between Py1 point and the Px1 point, and resistance 108 is the equivalent resistance between Py2 point and the Px2 point.Because the resistance of resistance 107,108 is considerably little, therefore the resistance of resistance 107,108 can be ignored.
When 2 touch events did not take place, the resistance between Y+ side and the Y-side was that the resistance of resistance 101,102,103 adds up.Yet, when 2 touch events take place, because resistance 102 parallel connections (resistance 107+ resistance 105+ resistance 108) therefore can cause the resistance between Py1 point and the Py2 point to descend.In addition, the distance between the Y direction is bigger along with Py1 point and Py2 point, and promptly the resistance value between Py1 and the Py2 is big more, and under effect in parallel, the resistance slippage between Py1 point and the Py2 point also can heal greatly.In other words, according to the resistance slippage between Y+ side and the Y-side, can assess Py1 point and the distance of Py2 point between the Y direction.
In like manner, when 2 touch events did not take place, the resistance between X+ side and the X-side was that the resistance of resistance 104,105,106 adds up.Yet, when 2 touch events take place, because resistance 105 parallel connections (resistance 107+ resistance 102+ resistance 108) therefore can cause the resistance between Px1 point and the Px2 point to descend.In addition, the distance between directions X is bigger along with Px1 point and Px2 point, and promptly the resistance value between Px1 point and the Px2 point is big more, and under effect in parallel, the resistance slippage between Px1 point and the Px2 point also can heal greatly.In other words, according to the resistance slippage between X+ side and the X-side, can assess Px1 point and the distance of Px2 point between directions X.
Fig. 4 A is the synoptic diagram according to the contact panel of the first embodiment of the present invention.Please merge with reference to Fig. 1 and Fig. 4 A, contact panel 60 comprises resistance-type panel module 10, selector switch 30 and detection module 50.Resistance-type panel module 10 has electrically-conductive backing plate 20,21.Electrically-conductive backing plate 20 has the guiding path along directions X, and X+ side, X-side are respectively the two ends of directions X guiding path.Electrically-conductive backing plate 21 parallel electrically conductive substrates 20.Electrically-conductive backing plate 21 has along the guiding path of Y direction, and Y+ side, Y-side are respectively the two ends of Y direction guiding path.Above-mentioned directions X and Y direction are orthogonal.When touch event takes place when, electrically- conductive backing plate 20 and 21 conductings mutually; Otherwise, when touch event is removed, electrically- conductive backing plate 20 and 21 not conductings mutually.Selector switch 30 is coupled between resistance-type panel module 10 and the detection module 50, in order to the relation that couples between decision resistance-type panel module 10 and the detection module 50.Detection module 50 is in order to detect the change in resistance situation between resistance-type panel module 10 " X+ side, X-sides " or " Y+ side, the Y-side ", with the touching situation of assessment touch event.
Accept above-mentionedly, Fig. 4 B is the process flow diagram according to the multi-point touch detection method of the first embodiment of the present invention.Please merge with reference to Fig. 1, Fig. 3 A, Fig. 3 B, Fig. 4 A and Fig. 4 B.When 2 touch events took place resistance-type panel module 10, detection module 50 can measure the change in resistance situation (step S401) between Y+ side and the Y-side.Then can differentiate Py1 point and the distance (step S402) of Py2 point between the Y direction according to above-mentioned change in resistance situation.In more detail, when the resistance between Y+ side and the Y-side rises gradually, represent Py1 point and the distance of Py2 point between the Y direction to diminish gradually; Otherwise, when the resistance between Y+ side and the Y-side descends gradually, represent Py1 point and the distance of Py2 point between the Y direction to become big gradually.
Below be described in more detail at step S401.When touch event did not take place, detection module 50 can measure first resistance between Y+ side and the Y-side earlier.Then, when 2 touch events took place, detection module 50 can switch to open-circuit condition with X+ side and X-side, and measured second resistance between Y+ side and the Y-side.Then the difference of foundation first resistance and second resistance then can be learnt the change in resistance situation between Y+ side and the Y-side.A kind of embodiment that below provides contact panel 60 to measure the change in resistance situation between Y+ side and the Y-side is considered and examined for haveing the knack of this area person.
Fig. 5 A is the detailed maps according to a kind of contact panel of the first embodiment of the present invention.Please merge with reference to Fig. 1, Fig. 3 A, Fig. 3 B, Fig. 4 A and Fig. 5 A.In the present embodiment, contact panel 60 has comprised resistance-type panel module 10, selector switch 30, divider resistance 201, detection module 50 and switch 121,122.Detection module 50 for example can be an analog-digital converter 40.Analog-digital converter 40 have input end+IN ,-IN and reference voltage end+REF ,-REF.Analog-digital converter 40 can with input end+IN ,-cross-pressure between the IN converts numerical data to.Because it is infinitely great that the impedance of input end+IN is tending towards, therefore input end+the IN of analog-digital converter 40 can be considered as do not have electric current to flow into.Reference voltage end+REF ,-REF can be used as higher limit and the lower limit that analog-digital converter 40 carries out voltage transitions.
Whether switch 121 can decide switch 121 conductings according to control signal C1, to provide voltage+VCC to an end of divider resistance 201 and the reference voltage end+REF of analog-digital converter 40.Whether switch 122 can decide switch 122 conductings according to control signal C2, so that ground voltage GND to be provided input end-IN and the reference voltage end-REF to analog-digital converter 40.
Because the resistance of voltage VCC, ground voltage GND and divider resistance 201 is for existing.In addition, see through analog-digital converter 40 and can measure cross-pressure between Y+ side and the Y-side.Therefore, utilize the dividing potential drop theorem can calculate resistance between Y+ side and the Y-side, to learn the change in resistance situation between Y+ side and the Y-side.In like manner, when switch 121,122 switches to conducting state, and multiplexer 131,132,133 switched to respectively 1,0,0 o'clock, and analog-digital converter 40 can measure the change in resistance situation between X+ side and the X-side.It should be noted that haveing the knack of art technology person can select the less resistance of resistance and implement divider resistance 201, to avoid influencing the dynamic range of digital analog converter 40 input ends.
Moreover, when the single-point contact incident took place, switch 121,122 switched to conducting state, and multiplexer 131,132,133 switched to respectively 0,0,1 o'clock, and analog-digital converter 40 can measure the position of touch points in the Y direction.When the single-point contact incident took place, switch 121,122 switched to conducting state, and multiplexer 131,132,133 switched to respectively 1,1,0 o'clock, and analog-digital converter 40 can measure the position of touch points at directions X.
Moreover when the multi-point touch incident took place, switch 121,122 switched to conducting state, and multiplexer 131,132,133 switched to respectively 0,0,1 o'clock, and analog-digital converter 40 can measure the position of the intermediate point of a plurality of touch points in the Y direction.When the multi-point touch incident took place, switch 121,122 switched to conducting state, and multiplexer 131,132,133 switched to respectively 1,1,0 o'clock, and analog-digital converter 40 can measure the position of the intermediate point of a plurality of touch points at directions X.Below with the mode of operation of switch 121,122 and multiplexer 131～133 and detection module 50 pairing finishing functions under tabulate and consider and examine for haveing the knack of this area person in one.
The mode of operation of table one switch module and detection module 50 pairing functions
| Switch 121 | |
|
|
|
The signal that |
| Conducting | Conducting | 0 | 1 | 1 | Change in resistance between Y+ side and the Y-side |
| Conducting | Conducting | 1 | 0 | 0 | Change in resistance between X+ side and the X-side |
| Conducting | Conducting | 0 | 0 | 1 | Touch points is in the position of Y direction |
| Conducting | Conducting | 1 | 1 | 0 | Touch points is at directions X |
| The position |
Referring again to Fig. 1, Fig. 3 A, Fig. 3 B and Fig. 4 A.What is particularly worth mentioning is that the change in resistance situation of above-mentioned steps S401 can be used as the input signal of man-machine interface.For instance, if the user desires the shown photo of amplifying display (not shown).The user can touch two fingers respectively any 2 points on the touch-control interface of contact panel 60.Along with the distance of two fingers in the Y direction strengthens, the resistance between Y+ side and the Y-side can descend gradually; Otherwise along with the distance of two fingers in the Y direction reduces, the resistance between Y+ side and the Y-side can rise gradually.On the other hand, the controller (not shown) in the display then can dwindle according to the amplification that the resistance between Y+ side and the Y-side is controlled photo.Along with the resistance between Y+ side and the Y-side can descend gradually, the controller shown photo of amplifying display gradually then then; Otherwise along with the resistance between Y+ side and the Y-side can rise gradually, then controller then dwindles the shown photo of display gradually.
Have the knack of art technology person and should be known in that it only is a kind of selection embodiment that the photo of display is dwindled in above-mentioned amplification, the present invention is not limited to this.In other embodiments, also the change in resistance situation between Y+ side and the Y-side can be applied to control the operation of every electronic installation.
In addition, have the knack of art technology person and the distance between pairing two touch points of the resistance between Y+ side and the Y-side can be created as table.When detection module 50 measures resistance between Y+ side and the Y-side, then can see through lookup table mode, learn the distance between two touch points fast.Moreover, have the knack of the art technology person's resolution of interpolation method of more can arranging in pairs or groups with the lifting table.That is to say that when if form is looked into no corresponding data, but close two resistances in the enquiry form are carried out the interpolation method and obtained distance between two touch points.
Moreover above-mentioned Fig. 5 A only is a kind of selection embodiment of contact panel 60, has the knack of coupling mode and configuration mode that art technology person can change each assembly in the contact panel 60 according to its demand.For example Fig. 5 B is the synoptic diagram according to the another kind of contact panel of the first embodiment of the present invention.Please merge with reference to Fig. 5 A and Fig. 5 B, Fig. 5 B and Fig. 5 A are similar, and difference is that Fig. 5 B utilizes divider resistance 202,203 to replace the divider resistance 201 of Fig. 5 A.
Though contact panel and multi-point touch detection method thereof have been depicted a possible kenel in the foregoing description, usually know that the knowledgeable should know but have in the affiliated technical field, each manufacturer is all different for the design of contact panel and multi-point touch detection method thereof, and therefore application of the present invention is when being not restricted to the possible kenel of this kind.In other words, so long as utilize the change in resistance situation of resistance-type panel module to assess the touching situation of multi-point touch incident, be to have met spiritual place of the present invention just.Below know that the knowledgeable can further understand spirit of the present invention for several embodiment usually so that this area has again, and implement the present invention.
Second embodiment
Referring again to Fig. 1, Fig. 3 A, Fig. 3 B and Fig. 4 A.The present embodiment and first embodiment are similar.Difference is, though among first embodiment to measure the change in resistance situation between Y+ side and the Y-side, with differentiation Py1 point and the distance of Py2 point between the Y direction.Present embodiment then is by measuring the change in resistance situation between X+ side and the X-side, differentiating Px1 point and the distance of Px2 point between directions X.Also can reach with first embodiment similar effect thus.
The 3rd embodiment
Referring again to Fig. 1, Fig. 3 A, Fig. 3 B and Fig. 4 A.The present embodiment and first embodiment are similar.Difference is, though among first embodiment to measure the change in resistance situation between Y+ side and the Y-side, with differentiation Py1 point and the distance of Py2 point between the Y direction.Present embodiment not only measures the change in resistance situation between Y+ side and the Y-side, to differentiate Py1 point and the distance of Py2 point between the Y direction.By measuring the change in resistance situation between X+ side and the X-side, differentiate Px1 point and the distance of Px2 point between directions X more simultaneously.
Its benefit is, the distance between two touch points can be according to the input signal of the change in resistance situation between X+ side and the X-side as man-machine interface only when directions X changes.On the other hand, when the distance between two touch points only when the Y direction changes, can be according to the input signal of the change in resistance situation between Y+ side and the Y-side as man-machine interface.
In sum, the change in resistance situation of guiding path in the throughput measuring resistance formula panel module of the present invention is with the touching situation of assessment multi-point touch incident.Therefore, above-mentioned change in resistance situation can be used as the input signal of man-machine interface, with the control electronic installation.
Though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the invention, when doing various changes and retouching.Therefore, the present invention's protection domain is as the criterion when looking claims person of defining.
Claims (20)
1. contact panel is characterized in that comprising:
One resistance-type panel module has one first guiding path and one second guiding path;
One divider resistance, a termination is received a voltage source;
One selector switch connects the other end of above-mentioned divider resistance, and connects above-mentioned first guiding path two ends and the above-mentioned second guiding path two ends; And
One detection module couples above-mentioned selector switch;
When the multi-point touch incident of generation, above-mentioned first guiding path and the then mutual conducting of multiple spot of above-mentioned second guiding path, above-mentioned selector switch selects above-mentioned first guiding path to connect with above-mentioned divider resistance, and detect the two ends of above-mentioned first guiding path with above-mentioned detection module, to assess a touching situation of above-mentioned multi-point touch incident.
2. contact panel according to claim 1 is characterized in that, described selector switch comprises:
One first multiplexer has first end and above-mentioned divider resistance that a first input end, one second input end and an output terminal connect first end of above-mentioned first guiding path, above-mentioned second guiding path respectively;
One second multiplexer has first end and above-mentioned detection module that a first input end, one second input end and an output terminal connect first end of above-mentioned first guiding path, above-mentioned second guiding path respectively; And
One the 3rd multiplexer has second end and above-mentioned detection module that a first input end, one second input end and an output terminal connect second end of above-mentioned first guiding path, above-mentioned second guiding path respectively.
3. contact panel according to claim 2 is characterized in that described detection module is an analog-digital converter, has a first input end and one second input end, couples the output terminal of above-mentioned second multiplexer and the output terminal of above-mentioned the 3rd multiplexer respectively.
4. contact panel according to claim 1 is characterized in that described detection module detects the two ends of above-mentioned first guiding path, measures the voltage at the above-mentioned first guiding path two ends, to estimate a phase mutual edge distance of above-mentioned multi-point touch incident.
5. contact panel according to claim 1 is characterized in that described detection module detects the two ends of above-mentioned first guiding path, measures the resistance at the above-mentioned first guiding path two ends, to estimate a phase mutual edge distance of above-mentioned multi-point touch incident.
6. contact panel according to claim 5 is characterized in that, wherein assesses the above-mentioned touching situation of above-mentioned multi-point touch incident according to above-mentioned resistance, sets up a form, finds out the corresponding above-mentioned phase mutual edge distance of above-mentioned resistance by looking into above table.
7. contact panel according to claim 6 is characterized in that, wherein when the above table no datat, with two resistances of the above table of adjacent above-mentioned resistance, the interpolation method of carrying out obtains corresponding above-mentioned phase mutual edge distance.
8. contact panel according to claim 1 is characterized in that, described multi-point touch incident is 2 contacts.
9. contact panel according to claim 1 is characterized in that, described resistance-type panel module comprises:
One first electrically-conductive backing plate has above-mentioned first guiding path along a first direction; And
One second electrically-conductive backing plate, parallel above-mentioned first electrically-conductive backing plate, above-mentioned second electrically-conductive backing plate have above-mentioned second guiding path along a second direction, and described first direction and described second direction are orthogonal.
10. contact panel according to claim 9 is characterized in that, the resistance-type panel module that described resistance-type panel module is a four-wire type.
11. a contact panel is characterized in that comprising:
One resistance-type panel module has one first guiding path and one second guiding path;
One first divider resistance, an end couple above-mentioned first guiding path;
One second divider resistance, an end couple above-mentioned second guiding path;
One selector switch receives a voltage source, and above-mentioned selector switch connects the other end of above-mentioned first divider resistance and the other end of above-mentioned second divider resistance, and connects above-mentioned first guiding path two ends and the above-mentioned second guiding path two ends; And
One detection module couples above-mentioned selector switch;
When the multi-point touch incident of generation, above-mentioned first guiding path and the then mutual conducting of multiple spot of above-mentioned second guiding path, above-mentioned selector switch selects above-mentioned voltage source to couple above-mentioned first divider resistance, and detect the two ends of above-mentioned first guiding path with above-mentioned detection module, to assess a touching situation of above-mentioned multi-point touch incident.
12. contact panel according to claim 11 is characterized in that described selector switch comprises:
One first multiplexer has the other end and above-mentioned voltage source that a first input end, one second input end and an output terminal connect the other end of above-mentioned first divider resistance, above-mentioned second divider resistance respectively;
One second multiplexer has first end and above-mentioned detection module that a first input end, one second input end and an output terminal connect first end of above-mentioned first guiding path, above-mentioned second guiding path respectively; And
One the 3rd multiplexer has second end and above-mentioned detection module that a first input end, one second input end and an output terminal connect second end of above-mentioned first guiding path, above-mentioned second guiding path respectively.
13. contact panel according to claim 12 is characterized in that described detection module is an analog-digital converter, has a first input end and one second input end and couples the output terminal of above-mentioned second multiplexer and the output terminal of above-mentioned the 3rd multiplexer respectively.
14. contact panel according to claim 11 is characterized in that, described detection module detects the two ends of above-mentioned first guiding path, measures the voltage at the above-mentioned first guiding path two ends, with a phase mutual edge distance of estimation multi-point touch incident.
15. contact panel according to claim 11 is characterized in that, described detection module detects the two ends of above-mentioned first guiding path, measures the resistance at the above-mentioned first guiding path two ends, with a phase mutual edge distance of estimation multi-point touch incident.
16. contact panel according to claim 15 is characterized in that, wherein assesses the above-mentioned touching situation of above-mentioned multi-point touch incident according to above-mentioned resistance, sets up a form, finds out the corresponding above-mentioned phase mutual edge distance of above-mentioned resistance by looking into above table.
17. contact panel according to claim 16 is characterized in that, wherein when the above table no datat, with two resistances of the above table of adjacent above-mentioned resistance, the interpolation method of carrying out obtains corresponding above-mentioned phase mutual edge distance.
18. contact panel according to claim 11 is characterized in that, described multi-point touch incident is 2 contacts.
19. contact panel according to claim 11 is characterized in that, described resistance-type panel module comprises:
One first electrically-conductive backing plate has above-mentioned first guiding path along a first direction; And
One second electrically-conductive backing plate, parallel above-mentioned first electrically-conductive backing plate, above-mentioned second electrically-conductive backing plate have above-mentioned second guiding path along a second direction, and described first direction and above-mentioned second direction are orthogonal.
20. contact panel according to claim 19 is characterized in that, the resistance-type panel module that described resistance-type panel module is a four-wire type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103001877A CN101464767B (en) | 2007-12-19 | 2007-12-19 | Touching control panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103001877A CN101464767B (en) | 2007-12-19 | 2007-12-19 | Touching control panel |
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| CN101923415A (en) * | 2010-02-26 | 2010-12-22 | 友达光电股份有限公司 | Touch sensor and position detector |
| CN102033675A (en) * | 2009-10-06 | 2011-04-27 | 原相科技股份有限公司 | Resistive touch controlling system and sensing method |
| CN102081487A (en) * | 2009-11-28 | 2011-06-01 | 比亚迪股份有限公司 | Detection method and device of resistance touch screen |
| CN102375644A (en) * | 2010-08-19 | 2012-03-14 | 上海天马微电子有限公司 | Display device and touch sensor |
| CN102541387A (en) * | 2010-12-27 | 2012-07-04 | 泰金宝电通股份有限公司 | Detection device for providing resistive touch position information and detection system using same |
| CN101937278B (en) * | 2009-06-30 | 2012-10-03 | 宏达国际电子股份有限公司 | Touch panel for asymmetric conductive patterns, related device and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1155911C (en) * | 2000-09-26 | 2004-06-30 | 洋华光电股份有限公司 | Manufacture of touching control panel |
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| CN101937278B (en) * | 2009-06-30 | 2012-10-03 | 宏达国际电子股份有限公司 | Touch panel for asymmetric conductive patterns, related device and method thereof |
| CN102033675B (en) * | 2009-10-06 | 2012-11-14 | 原相科技股份有限公司 | Resistive touch controlling system and sensing method |
| CN102033675A (en) * | 2009-10-06 | 2011-04-27 | 原相科技股份有限公司 | Resistive touch controlling system and sensing method |
| TWI399686B (en) * | 2009-10-06 | 2013-06-21 | Pixart Imaging Inc | Resistive touch controlling system and sensing method |
| CN102081487A (en) * | 2009-11-28 | 2011-06-01 | 比亚迪股份有限公司 | Detection method and device of resistance touch screen |
| CN102081487B (en) * | 2009-11-28 | 2013-04-10 | 比亚迪股份有限公司 | Detection method and device of resistance touch screen |
| CN101923415B (en) * | 2010-02-26 | 2012-10-31 | 友达光电股份有限公司 | Touch sensor and position detector |
| CN101923415A (en) * | 2010-02-26 | 2010-12-22 | 友达光电股份有限公司 | Touch sensor and position detector |
| CN102375644A (en) * | 2010-08-19 | 2012-03-14 | 上海天马微电子有限公司 | Display device and touch sensor |
| CN102375644B (en) * | 2010-08-19 | 2015-12-02 | 上海天马微电子有限公司 | Display device and touch induction device |
| CN102541387A (en) * | 2010-12-27 | 2012-07-04 | 泰金宝电通股份有限公司 | Detection device for providing resistive touch position information and detection system using same |
| CN102830887A (en) * | 2011-06-13 | 2012-12-19 | 炬力集成电路设计有限公司 | Touch control method and control circuit of resistance type touch screen |
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