CN101436114B - Touch control display apparatus and method for recognizing multiple press contacts - Google Patents
Touch control display apparatus and method for recognizing multiple press contacts Download PDFInfo
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- CN101436114B CN101436114B CN2007101694791A CN200710169479A CN101436114B CN 101436114 B CN101436114 B CN 101436114B CN 2007101694791 A CN2007101694791 A CN 2007101694791A CN 200710169479 A CN200710169479 A CN 200710169479A CN 101436114 B CN101436114 B CN 101436114B
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Abstract
The invention provides a touch-control display device and a method for identifying a plurality of press contacts. The touch-control display device comprises a control module and a resistance-type touch-control panel, wherein the resistance-type touch-control panel comprises a first conducting layer and a second conducting layer; and the first conducting layer and the second conducting layer have a first electrode, a second electrode, a third electrode and a fourth electrode. The method comprises the following steps: when the first conducting layer and the second conducting layer have a plurality of press contacts, two electrodes to which voltage is applied are repeatedly selected in an unrepeatable combination mode; two voltage values are acquired from the rest electrodes, so as to acquire a plurality of voltage values; a plurality of equivalent resistance values are figured out according to the voltage values; and the positions of a plurality of the press contacts are figured out. The method ensures that the touch-control display device can simultaneously identify a plurality of press contacts and perform subsequent relevant operation, so as to provide more manifold control modes for users to operate.
Description
Technical field
The present invention relates to a kind of touch control display apparatus, particularly a kind of touch control display apparatus with function of a plurality of pressures of identification contact.
Background technology
Along with the progress of science and technology, many electronic installations with touch control display apparatus, for example PDA, mobile phone or Tablet PC etc. have appearred now.Since the user can instinct type ground the use touch control display apparatus, than being easier to left-hand seat, so touch control display apparatus is widely used on the electronic installation of every field gradually for general user.The touch control display apparatus of contact panel that wherein has resistance-type is because cost is comparatively cheap, and the mode of the contact panel of controlling resistance formula is also fairly simple, so the contact panel of resistance-type is subjected to using widely on market.
But in the prior art, touch control display apparatus with contact panel of resistance-type does not have the control module that can discern two or more touch points simultaneously, this makes the user can only control one when the operation touch control display apparatus and presses the contact, thereby allows mode of operation seem comparatively dull.If touch control display apparatus can have different touch control manners, then the mode of its control will be diversified more with the effect that shows.
Therefore need a kind of new touch control display apparatus to solve prior art problems.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of touch control display apparatus, and it has the function that can discern a plurality of pressures contact.
Another fundamental purpose of the present invention is to provide a kind of method, makes touch control display apparatus can judge a plurality of pressures contact.
For reaching above-mentioned purpose, the present invention at first provides a kind of touch control display apparatus, and it comprises electric resistance touch-control panel and control module.Electric resistance touch-control panel comprises first conductive layer and second conductive layer.First conductive layer and second conductive layer have first electrode, second electrode, third electrode and the 4th electrode, and input object can be exerted pressure and make the conductive layer of winning contact second conductive layer to produce at least one pressure contact.The control module and first electrode, second electrode, third electrode and the 4th electrode electrically connect.Wherein when having a plurality of pressures contact between first conductive layer and second conductive layer, this control module is repeatedly poor to any two electrode application voltage of first electrode, second electrode, third electrode and the 4th electrode, and obtains a plurality of magnitudes of voltage at remaining electrode.Control module utilizes a plurality of magnitudes of voltage to calculate formed a plurality of equivalent resistances between first electrode, second electrode, third electrode, the 4th electrode and those pressure contacts.And, calculate the position of this a plurality of pressures contact according to these equivalent resistances.
Above-mentioned touch control display apparatus also can comprise: switched circuit, electrically connect with described control module, described control module is controlled described switched circuit to choose two electrodes in described first electrode, described second electrode, described third electrode and described the 4th electrode, these two electrodes are electrically connected power source supply end or earth terminal respectively, to apply described voltage difference.
In the above-mentioned touch control display apparatus, described control module can comprise measuring unit, and in order to the measuring voltage value, described measuring unit is obtained described a plurality of magnitude of voltage at described first electrode, described second electrode, described third electrode and described the 4th electrode respectively.
In the above-mentioned touch control display apparatus, described control module can comprise switched circuit, choose two electrodes in described first electrode, described second electrode, described third electrode and described the 4th electrode to control described switched circuit, these two electrodes are electrically connected power source supply end or earth terminal respectively to apply described voltage difference.
In the above-mentioned touch control display apparatus, the described a plurality of pressures contact between described first conductive layer and described second conductive layer can comprise that first presses contact and second to press the contact.
In the above-mentioned touch control display apparatus, described control module can calculate formed eight groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact, and calculates the position that the contact is pressed in the described first pressure contact and described second according to described eight groups of equivalent resistances.
In the above-mentioned touch control display apparatus, described control module can calculate formed 12 groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact, and calculates the position that the contact is pressed in the described first pressure contact and described second according to described 12 groups of equivalent resistances.
The present invention also provides a kind of touch control display apparatus, comprises electric resistance touch-control panel and control module, and wherein electric resistance touch-control panel comprises: first conductive layer has sensing electrode; And second conductive layer, having first electrode, second electrode, third electrode and the 4th electrode, at least one input object can be exerted pressure and be made described first conductive layer contact described second conductive layer to press contact to produce at least one.Wherein control module and described sensing electrode, described first electrode, described second electrode, described third electrode and described the 4th electrode electrically connect.When having a plurality of pressures contact between described first conductive layer and described second conductive layer, described control module in the mode of not reproducible combination at described sensing electrode, described first electrode, described second electrode, it is poor repeatedly to choose two electrode application voltage in described third electrode and described the 4th electrode, and obtain two magnitudes of voltage at remaining electrode, obtain a plurality of magnitudes of voltage whereby, described control module utilizes described a plurality of magnitude of voltage to calculate described sensing electrode, described first electrode, described second electrode, described third electrode, formed a plurality of equivalent resistances between described the 4th electrode and the described a plurality of pressures contact, and, obtain the position of described a plurality of pressures contact according to described a plurality of equivalent resistances.
Above-mentioned touch control display apparatus also can comprise: switched circuit, electrically connect with described control module, described control module is controlled described switched circuit to choose two electrodes in described sensing electrode, described first electrode, described second electrode, described third electrode and described the 4th electrode, these two electrodes are electrically connected power source supply end or earth terminal respectively, to apply described voltage difference.
In the above-mentioned touch control display apparatus, described control module can comprise measuring unit, in order to the measuring voltage value, described measuring unit is obtained described a plurality of magnitude of voltage at described sensing electrode, described first electrode, described second electrode, described third electrode and described the 4th electrode respectively.
In the above-mentioned touch control display apparatus, described control module can comprise switched circuit, choose two electrodes in described sensing electrode, described first electrode, described second electrode, described third electrode and described the 4th electrode to control described switched circuit, these two electrodes are electrically connected power source supply end or earth terminal respectively to apply described voltage difference.
In the above-mentioned touch control display apparatus, the described a plurality of pressures contact between described first conductive layer and described second conductive layer can comprise that first presses contact and second to press the contact.
In the above-mentioned touch control display apparatus, described control module can calculate formed 14 groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, described sensing electrode, the described first pressure contact and the described second pressure contact, and calculates the position that the contact is pressed in the described first pressure contact and described second according to described 14 groups of equivalent resistances.
In the above-mentioned touch control display apparatus, described control module can calculate formed nine groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact, and calculates the position that the contact is pressed in the described first pressure contact and described second according to described nine groups of equivalent resistances.
The method of a plurality of pressures of judgement of the present invention contact cooperates above-mentioned touch control display apparatus, for the position of judging a plurality of pressures contact, may further comprise the steps: when having a plurality of pressures contact between first conductive layer and second conductive layer, it is poor then repeatedly to choose two electrode application voltage in the mode of not reproducible combination in this first electrode, this second electrode, this third electrode and the 4th electrode, and obtain two magnitudes of voltage at remaining electrode, obtain a plurality of magnitudes of voltage whereby; Utilize a plurality of magnitudes of voltage to calculate a plurality of equivalent resistances; And, obtain the position of a plurality of pressures contact according to a plurality of equivalent resistances.
In the said method, described first conductive layer comprises described first electrode and described second electrode, described second conductive layer comprises described third electrode and described the 4th electrode, described method also can may further comprise the steps: choose two electrodes in described first electrode, described second electrode, described third electrode and described the 4th electrode, these two electrodes are electrically connected power source supply end or earth terminal respectively to apply described voltage difference; And choose remaining electrode electric connection measuring unit to obtain a plurality of magnitudes of voltage.
Said method also can may further comprise the steps: when having the first pressure contact and the second pressure contact between described first conductive layer and described second conductive layer, calculate formed eight groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact; And the position that calculates described first pressure contact and the described second pressure contact according to described eight groups of equivalent resistances.
Said method also can may further comprise the steps: when having the first pressure contact and the second pressure contact between described first conductive layer and described second conductive layer, calculate formed 12 groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact; And the position that calculates described first pressure contact and the described second pressure contact according to described 12 groups of equivalent resistances.
In the said method, described first conductive layer comprises sensing electrode, described second conductive layer comprises described first electrode, described second electrode, described third electrode and described the 4th electrode, described method also can may further comprise the steps: choose two electrodes in described first electrode, described second electrode, described third electrode, described the 4th electrode and the described sensing electrode, these two electrodes are electrically connected power source supply end or earth terminal respectively to apply described voltage difference; And choose remaining electrode electric connection measuring unit to obtain a plurality of magnitudes of voltage.
Said method also can may further comprise the steps: when having the first pressure contact and the second pressure contact between described first conductive layer and described second conductive layer, calculate formed 14 groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, described sensing electrode, the described first pressure contact and the described second pressure contact; And the position that calculates described first pressure contact and the described second pressure contact according to described 14 groups of equivalent resistances.
Said method also can may further comprise the steps: when having the first pressure contact and the second pressure contact between described first conductive layer and described second conductive layer, calculate formed nine groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact; And the position that calculates described first pressure contact and the described second pressure contact according to described nine groups of equivalent resistances.
The invention enables touch control display apparatus can discern a plurality of pressures contact simultaneously and carry out follow-up associative operation, thereby more various control mode is arranged for user's operation.
Description of drawings
Figure 1A-Figure 1B is the Organization Chart of touch control display apparatus of the present invention.
The flow chart of steps of Fig. 2 method of a plurality of pressures contact for the present invention discerns.
Fig. 3 is the equivalent circuit diagram of touch control display apparatus first embodiment of the present invention.
Fig. 4 is the equivalent circuit diagram of touch control display apparatus second embodiment of the present invention.
Fig. 5 is the equivalent circuit diagram of the electric resistance touch-control panel of five-line of the present invention.
Fig. 6 has the synoptic diagram of the electronic installation of touch control display apparatus for the present invention.
Embodiment
For more clearly disclosing technology contents of the present invention, be described as follows especially exemplified by preferable specific embodiment.
Please refer to Figure 1A and Figure 1B Organization Chart about the touch control display apparatus of one embodiment of the invention.
The touch control display apparatus 10 of one embodiment of the invention has the function of a plurality of pressures of identification contact.Shown in Figure 1A, touch control display apparatus 10 comprises control module 21, switched circuit 23 and electric resistance touch-control panel 30.Control module 21 comprises measuring unit 22, and measuring unit 22 is in order to the magnitude of voltage of measuring resistance formula contact panel 30 each electrode.Be electrically connected to each other between control module 21 and the switched circuit 23.Switched circuit 23 has the function that change-over circuit connects, and control module 21 can being connected by each electrode in the switched circuit 23 change electric resistance touch-control panels 30 and power source supply end or earth terminal.Be noted that herein in one embodiment of this invention, switched circuit 23 also can be arranged in the control module 21, but the present invention is not as limit.
Shown in Figure 1A, in one embodiment of this invention, electric resistance touch-control panel 30 is the contact panel of four-wire type.Electric resistance touch-control panel 30 comprises that first conductive layer 31 and second conductive layer, 32, the first conductive layers 31 have first electrode 311 and second electrode, 312, the second conductive layers 32 have third electrode 321 and the 4th electrode 322.First electrode 311, second electrode 312, third electrode 321 and the 4th electrode 322 electrically connect with control module 21 respectively.In one embodiment of this invention, first electrode 311, second electrode 312, third electrode 321 and the 4th electrode 322 are respectively a conductor wire, so form the electric resistance touch-control panel 30 of four-wire type.Wherein third electrode 321 and the 4th electrode 322 are arranged at the both sides of second conductive layer 32, in order to the X-axis coordinate figure of measuring resistance formula contact panel 30.When measuring the Y-axis coordinate figure, also have voltage difference and form uniform electric field thereby be located at the third electrode 321 of second conductive layer, 32 both sides and the 4th electrode 322, first electrode 311 of first conductive layer, 31 both sides and second electrode 312 are promptly in order to the Y-axis coordinate figure of measuring resistance formula contact panel 30.Because the X-axis of four-wire type electric resistance touch-control panel and the configuration and the principle of work thereof of Y-axis are that those of ordinary skill is known in the technology of the present invention field, therefore following will not giving unnecessary details.
Input object (figure to do not show), pointer for example can be exerted pressure and made conductive layer 31 contacts second conductive layer 32 of winning, and presses contact to produce at least one.Owing to will form short circuit during first conductive layer, 31 contacts, second conductive layer 32, thereby produce voltage drop, therefore measure the magnitude of voltage of third electrode 321 or the 4th electrode 322 by measuring unit 22, can learn whether first conductive layer 31 contacts second conductive layer 32.On the other hand, switched circuit 23 can be connected to first electrode 311 on the electric resistance touch-control panel 30, second electrode 312, third electrode 321 or the 4th electrode 322 and measuring unit 22, power source supply end or earth terminal to control for control module 21.Control module 21 is repeatedly chosen above-mentioned two electrodes in the mode of not reproducible combination and is connected power source supply end or earth terminal to apply voltage difference, and measure two magnitudes of voltage of remaining electrode by measuring unit 22, obtain a plurality of magnitudes of voltage whereby, can learn between first conductive layer 31 and second conductive layer 32 whether a plurality of pressures contact is arranged.And can further identify the position of different a plurality of pressures contacts.Will describe in detail below the method about identification.
Shown in Figure 1B, in one embodiment of this invention, the electric resistance touch-control panel 30 among Figure 1A also can be the electric resistance touch-control panel 30 ' of five-line.Electric resistance touch-control panel 30 ' comprises first conductive layer 31 ' and second conductive layer 32 '.First conductive layer 31 ' comprises that sensing electrode 311 ', the second conductive layer 32 ' comprises first electrode 321 ', second electrode 322 ', third electrode 323 ' and the 4th electrode 324 '.Sensing electrode 311 ', first electrode 321 ', second electrode 322 ', third electrode 323 ' and the 4th electrode 324 ' electrically connect with control module 21 respectively.In one embodiment of this invention, sensing electrode 311 ', first electrode 321 ', second electrode 322 ', third electrode 323 ' and the 4th electrode 324 ' are respectively a conductor wire, so form the electric resistance touch-control panel 30 ' of five-line.Wherein first electrode 321 ', second electrode 322 ', third electrode 323 ' and the 4th electrode 324 ' can be in order to the X-axis coordinate figure and the Y-axis coordinate figures of measuring resistance formula contact panel 30 '.Because the X-axis of five-wire resistance type touch panel and the configuration and the principle of work thereof of Y-axis also are that those of ordinary skill is known in the technology of the present invention field, therefore following will not giving unnecessary details.
Input object (figure to do not show), pointer for example can be exerted pressure and made conductive layer 31 ' contact second conductive layer 32 ' of winning press contact to produce at least one.Owing to will form short circuit during first conductive layer 31 ' contact, second conductive layer 32 ', thereby produce voltage drop, therefore, can learn whether first conductive layer 31 ' contacts second conductive layer 32 ' by the magnitude of voltage of measuring unit 22 measurement sensing electrodes 311 '.On the other hand, switched circuit 23 can be connected to sensing electrode 311 ' on the electric resistance touch-control panel 30 ', first electrode 321 ', second electrode 322 ', third electrode 323 ' or the 4th electrode 324 ' and power source supply end or earth terminal to control for control module 21.Control module 21 is repeatedly chosen above-mentioned two electrodes in the mode of not reproducible combination and is connected power source supply end or earth terminal to apply voltage difference.And measure two magnitudes of voltage of remaining electrode by measuring unit 22, and obtain a plurality of magnitudes of voltage whereby, can learn whether a plurality of pressures contact is arranged between first conductive layer 31 ' and second conductive layer 32 '.And can further identify the position of different a plurality of pressures contacts.Will describe in detail below the method about identification.
Next please in the lump with reference to figs. 2 to Fig. 4 about the flow chart of steps of the method for a plurality of pressures of the identification of one embodiment of the invention contact and the inside equivalent circuit diagram of touch control display apparatus.Wherein Fig. 3 is the equivalent circuit diagram of first embodiment, and Fig. 4 is the equivalent circuit diagram of second embodiment.Be noted that herein, though below be the method that example illustrates judgement touch control manner of the present invention with the electric resistance touch-control panel 30 of four-wire type, the method for judgement touch control manner of the present invention is not limited to use the electric resistance touch-control panel 30 in four-wire type.
At first carry out step 201: judge whether have a plurality of pressures contact between first conductive layer and second conductive layer.
At first wherein two electrodes in the control module 21 controlling resistance formula contact panels 30 electrically connect power source supply end and earth terminal to apply voltage difference, measure the voltage of other two electrodes again, judge whether different magnitude of voltage generations.To be example below with the equivalent electrical circuit of first embodiment of Fig. 3, description of step 201.Be noted that the first embodiment of the present invention is example to have first pressure contact T1, the T1 ' between first conductive layer 31 and second conductive layer 32 with second pressure contact T2, the T2 ', but the present invention is not as limit.When having first pressure contact T1, the T1 ' between first conductive layer 31 and second conductive layer 32 with second pressure contact T2, the T2 ', first conductive layer 31 and second conductive layer 32 form a plurality of equivalent resistance Ra1, Ra2, Ra3, Rb1, Rb2 and Rb3 respectively to I haven't seen you for ages, first presses contact T1 and first to press between the T1 ' of contact can form equivalent resistance Rz1, and second presses contact T2 and second to press between the T2 ' of contact can form equivalent resistance Rz2.First electrode 311 of control module 21 controls this moment first conductive layer 31 electrically connects with power source supply end, and second electrode 312 electrically connects with earth terminal, to apply voltage difference.Utilize measuring unit 22 to measure the third electrode 321 of second conductive layer 32 and the magnitude of voltage of the 4th electrode 322 respectively again.If first conductive layer 31 and second conductive layer 32 have only one to press the contact, third electrode 321 is identical with the magnitude of voltage meeting of the 4th electrode 322.Therefore if third electrode 321 is different with the magnitude of voltage of the 4th electrode 322, can learn that first conductive layer 31 and second conductive layer 32 have more than one pressure contact.Control module 21 can judge that whether having first between first conductive layer 31 and second conductive layer 32 presses contact T1, T1 ' to press contact T2, T2 ' with second by above-mentioned mode.
Be noted that above-mentioned connected mode only is signal.Also can electrically connect by third electrode 321 and power source supply end, the 4th electrode 322 electrically connects the magnitude of voltage of measuring first electrode 311 and second electrode 312 with earth terminal.Or electrically connect power source supply end and earth terminal respectively by first electrode 311 and second electrode 312, and whether measure third electrode 321 has different modes such as magnitude of voltage to judge, and the present invention is not exceeded with above-mentioned text description and illustrated connected mode.
When between definite first conductive layer 31 and second conductive layer 32 a plurality of pressures contact being arranged, promptly carry out step 202: in first electrode, second electrode, third electrode and the 4th electrode, repeatedly choose two electrodes in the mode of not reproducible combination and electrically connect with power source supply end or earth terminal respectively, to apply voltage difference.
Control module 21 is utilized switched circuit 23, come repeatedly to choose two electrodes in first electrode 311, second electrode 312, third electrode 321 and the 4th electrode 322 in the mode of not reproducible combination, these two electrodes are electrically connected with power source supply end or earth terminal respectively, to apply voltage difference.
And carry out step 203 simultaneously: choose remaining electrode and measuring unit and electrically connect to obtain a plurality of magnitudes of voltage.
Control module can utilize switched circuit 23 to choose remaining electrode 21 this moments, and remaining electrode is connected with measuring voltage with measuring unit 22 respectively.Suppose can choose earlier first electrode 311 and be connected with power source supply end in step 202, second electrode 312 electrically connects with earth terminal, and the voltage of third electrode 321 is measured in control survey unit 22 again.Then choose first electrode 311 and be connected with earth terminal, second electrode 312 electrically connects with power source supply end, to measure the voltage of third electrode 321.Just can record two different magnitudes of voltage thus from third electrode 321.Then change connected mode in the mode of not reproducible combination again, for example choose third electrode 321 and is connected with power source supply end, the 4th electrode 322 and earth terminal electric connection, and measuring unit 22 is measured the voltage of first electrode 311 and second electrode 312 respectively.Then, can obtain a plurality of magnitudes of voltage by repeating above-mentioned step 202 and step 203 to measure the magnitude of voltage of each electrode on first conductive layer 31 and second conductive layer 32 in regular turn.
Carry out step 204 again: calculate a plurality of equivalent resistances between first electrode, second electrode, third electrode, the 4th electrode, the first pressure contact and the second pressure contact.
After obtaining a plurality of magnitudes of voltage, the principle that can utilize voltage to be directly proportional with resistance calculates first electrode 311, second electrode 312, third electrode 321, the 4th electrode 322, first pressure contact T1, the T1 ' and second a plurality of equivalent resistances of pressing between contact T2, the T2 '.Equivalent electrical circuit with first embodiment of Fig. 3 is an example, Ra1 is arranged in the present embodiment to Rz2 totally eight groups of equivalent resistances between first conductive layer 31 and second conductive layer 32.After carrying out step 202 and step 203,, can calculate eight groups of equivalent resistances as long as obtain the relational expression of eight groups voltage and resistance.
But the computable resistance number of the present invention does not exceed with first embodiment.In order to carry out more accurate calculating, the present invention also can increase the resistance number that calculates between first conductive layer 31 and second conductive layer 32, i.e. second embodiment as shown in Figure 4.Compare with first embodiment, the equivalent resistance of second embodiment has increased equivalent resistance Ra4, Ra5, Rb4 and Rb5.The flow process of recycling above-mentioned steps 202 and step 203 can be calculated first electrode 311, second electrode 312, third electrode 321, the 4th electrode 322, first pressure contact T1, the T1 ' and 1 12 groups of equivalent resistances of pressing between contact T2, the T2 '.Control module 21 can utilize 12 groups of equivalent resistances to calculate the position that first pressure contact T1, the T1 ' and second presses contact T2, T2 ' more accurately.
After calculating a plurality of equivalent resistances, just carry out step 205: the position of calculating a plurality of pressures contact.
Then utilize resistance value with apart from the principle of equal proportion, just can calculate the position of a plurality of pressures contact.First embodiment with Fig. 3 is an example, because first electrode, 311 to second electrodes 312 are fixed with the total resistance value of third electrode 321 to the 4th electrodes 322, therefore after obtaining between first conductive layer 31 and second conductive layer 32 eight equivalent resistances, can utilize the principle of equal proportion to try to achieve first position of pressing contact T1, T1 ' and second pressure contact T2, T2 '.
Be noted that herein the method for a plurality of pressures of identification of the present invention contact is not exceeded with above-mentioned order of steps, as long as can reach purpose of the present invention, but the also change of above-mentioned order of steps.
In addition, the method for a plurality of pressures of identification of the present invention contact also can be used the five-wire resistance type touch panel 30 ' shown in Figure 1B.Please refer to Fig. 5, this figure is the equivalent circuit diagram of the electric resistance touch-control panel of five-line of the present invention.
Present embodiment is that example describes to have first pressure contact T1, the T1 ' between first conductive layer 31 ' and second conductive layer 32 ' with second pressure contact T2, the T2 ', but the present invention is not as limit.As shown in Figure 5, control module 21 utilizes switched circuit 23 repeatedly to choose sensing electrode 311 ', first electrode 321 ', second electrode 322 ', third electrode 323 ' and the 4th electrode 324 ' two electrodes wherein in the mode of not reproducible combination, these two electrodes are connected with power source supply end or earth terminal respectively, to apply this voltage difference.Remaining electrode then electrically connects measuring unit 22 respectively, can obtain two magnitudes of voltage at remaining electrode, obtains a plurality of magnitudes of voltage whereby, and tries to achieve the relational expression of 14 groups voltage and resistance.The principle that is directly proportional with resistance by voltage is obtained the equivalent resistance Ra1～Ra3 on first conductive layer 31 ' again, and equivalent resistance Rz1, the Rz2 between equivalent resistance Rb1～Rb9 on second conductive layer 32 ' and the pressure contact be totally ten four groups of equivalent resistances.And obtain first whereby and press contact T1, T1 ' and second to press the position of contact T2, T2 '.On the other hand, also can only obtain second conductive layer, 32 ' last nine groups of equivalent resistance Rb1～Rb9, can obtain first and press contact T1, T1 ' and second to press the position of contact T2, T2 '.Because the method for the method of a plurality of pressures of five-wire resistance type touch panel 30 ' identification contact and a plurality of pressures of aforementioned four-wire type electric resistance touch-control panel 30 identifications contact is similar, so do not repeat them here.
By above-mentioned mode, utilize electric resistance touch-control panel 30 ' also can identify a plurality of pressures contact.
Please refer to Fig. 6 at last, this figure is the synoptic diagram that the present invention has the electronic installation of touch control display apparatus.
Touch control display apparatus 10 of the present invention can be installed on the electronic installation 40, for user's operating electronic devices 40.Electronic installation 40 can be electronic installations such as Tablet PC, mobile phone or PDA, but the present invention is not exceeded with said apparatus.The user can contact touch control display apparatus 10 with two pointer, and touch control display apparatus 10 can be learnt 2 position simultaneously and carry out follow-up associative operation.Electronic installation 40 can have more various control mode and operates for the user whereby.
In sum, no matter the present invention all shows the feature that be different from prior art with regard to purpose, means and effect.But it should be noted that above-mentioned many embodiment give an example for convenience of explanation, interest field of the present invention should be as the criterion with claims certainly, but not only limits to the foregoing description.
Claims (21)
1. a touch control display apparatus is characterized in that, comprising:
Electric resistance touch-control panel comprises:
First conductive layer has first electrode and second electrode; And
Second conductive layer has third electrode and the 4th electrode, and at least one input object can be exerted pressure and be made described first conductive layer contact described second conductive layer to produce at least one pressure contact; And
Control module electrically connects with described first electrode, described second electrode, described third electrode and described the 4th electrode;
Wherein, when having a plurality of pressures contact between described first conductive layer and described second conductive layer, described control module in the mode of not reproducible combination at described first electrode, described second electrode, it is poor repeatedly to choose two electrode application voltage in described third electrode and described the 4th electrode, and obtain two magnitudes of voltage at remaining electrode, obtain a plurality of magnitudes of voltage whereby, described control module utilizes described a plurality of magnitude of voltage to calculate described first electrode, described second electrode, described third electrode, formed a plurality of equivalent resistances between described the 4th electrode and the described a plurality of pressures contact, and, obtain the position of described a plurality of pressures contact according to described a plurality of equivalent resistances.
2. touch control display apparatus according to claim 1, it is characterized in that, also comprise: switched circuit, electrically connect with described control module, described control module is controlled described switched circuit to choose two electrodes in described first electrode, described second electrode, described third electrode and described the 4th electrode, these two electrodes are electrically connected power source supply end or earth terminal respectively, to apply described voltage difference.
3. touch control display apparatus according to claim 1, it is characterized in that, wherein said control module comprises measuring unit, and in order to the measuring voltage value, described measuring unit is obtained described a plurality of magnitude of voltage at described first electrode, described second electrode, described third electrode and described the 4th electrode respectively.
4. touch control display apparatus according to claim 1, it is characterized in that, wherein said control module comprises switched circuit, choose two electrodes in described first electrode, described second electrode, described third electrode and described the 4th electrode to control described switched circuit, these two electrodes are electrically connected power source supply end or earth terminal respectively to apply described voltage difference.
5. touch control display apparatus according to claim 1 is characterized in that, the described a plurality of pressures contact between wherein said first conductive layer and described second conductive layer comprises that first presses contact and second to press the contact.
6. touch control display apparatus according to claim 5, it is characterized in that, wherein said control module calculates formed eight groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact, and calculates the position that the contact is pressed in the described first pressure contact and described second according to described eight groups of equivalent resistances.
7. touch control display apparatus according to claim 5, it is characterized in that, wherein said control module calculates formed 12 groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact, and calculates the position that the contact is pressed in the described first pressure contact and described second according to described 12 groups of equivalent resistances.
8. a touch control display apparatus is characterized in that, comprising:
Electric resistance touch-control panel comprises:
First conductive layer has sensing electrode; And
Second conductive layer has first electrode, second electrode, third electrode and the 4th electrode, and at least one input object can be exerted pressure and be made described first conductive layer contact described second conductive layer to produce at least one pressure contact; And
Control module electrically connects with described sensing electrode, described first electrode, described second electrode, described third electrode and described the 4th electrode;
Wherein, when having a plurality of pressures contact between described first conductive layer and described second conductive layer, described control module in the mode of not reproducible combination at described sensing electrode, described first electrode, described second electrode, it is poor repeatedly to choose two electrode application voltage in described third electrode and described the 4th electrode, and obtain two magnitudes of voltage at remaining electrode, obtain a plurality of magnitudes of voltage whereby, described control module utilizes described a plurality of magnitude of voltage to calculate described sensing electrode, described first electrode, described second electrode, described third electrode, formed a plurality of equivalent resistances between described the 4th electrode and the described a plurality of pressures contact, and, obtain the position of described a plurality of pressures contact according to described a plurality of equivalent resistances.
9. touch control display apparatus according to claim 8, it is characterized in that, also comprise: switched circuit, electrically connect with described control module, described control module is controlled described switched circuit to choose two electrodes in described sensing electrode, described first electrode, described second electrode, described third electrode and described the 4th electrode, these two electrodes are electrically connected power source supply end or earth terminal respectively, to apply described voltage difference.
10. touch control display apparatus according to claim 8, it is characterized in that, wherein said control module comprises measuring unit, in order to the measuring voltage value, described measuring unit is obtained described a plurality of magnitude of voltage at described sensing electrode, described first electrode, described second electrode, described third electrode and described the 4th electrode respectively.
11. touch control display apparatus according to claim 8, it is characterized in that, wherein said control module comprises switched circuit, choose two electrodes in described sensing electrode, described first electrode, described second electrode, described third electrode and described the 4th electrode to control described switched circuit, these two electrodes are electrically connected power source supply end or earth terminal respectively to apply described voltage difference.
12. touch control display apparatus according to claim 8 is characterized in that, the described a plurality of pressures contact between wherein said first conductive layer and described second conductive layer comprises that first presses contact and second to press the contact.
13. touch control display apparatus according to claim 12, it is characterized in that, wherein said control module calculates formed 14 groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, described sensing electrode, the described first pressure contact and the described second pressure contact, and calculates the position that the contact is pressed in the described first pressure contact and described second according to described 14 groups of equivalent resistances.
14. touch control display apparatus according to claim 12, it is characterized in that, wherein said control module calculates formed nine groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact, and calculates the position that the contact is pressed in the described first pressure contact and described second according to described nine groups of equivalent resistances.
15. the method for a plurality of pressures of an identification contact, be used for electric resistance touch-control panel, described electric resistance touch-control panel comprises first conductive layer and second conductive layer, described first conductive layer and described second conductive layer have first electrode, second electrode, third electrode and the 4th electrode, it is characterized in that a plurality of pressure contact method of described identification may further comprise the steps:
When having a plurality of pressures contact between described first conductive layer and described second conductive layer, it is poor then repeatedly to choose two electrode application voltage in the mode of not reproducible combination in described first electrode, described second electrode, described third electrode and described the 4th electrode, and obtain two magnitudes of voltage at remaining electrode, obtain a plurality of magnitudes of voltage whereby;
Utilize described a plurality of magnitude of voltage to calculate a plurality of equivalent resistances; And
According to described a plurality of equivalent resistances, obtain the position of described a plurality of pressures contact.
16. the method for a plurality of pressures of identification according to claim 15 contact, it is characterized in that, wherein said first conductive layer comprises described first electrode and described second electrode, and described second conductive layer comprises described third electrode and described the 4th electrode, and described method is further comprising the steps of:
Choose two electrodes in described first electrode, described second electrode, described third electrode and described the 4th electrode, these two electrodes are electrically connected power source supply end or earth terminal respectively to apply described voltage difference; And
Choose remaining electrode and electrically connect measuring unit to obtain a plurality of magnitudes of voltage.
17. the method for a plurality of pressures of identification according to claim 16 contact is characterized in that, and is further comprising the steps of:
When having the first pressure contact and the second pressure contact between described first conductive layer and described second conductive layer, calculate formed eight groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact; And
Calculating described first according to described eight groups of equivalent resistances presses contact and described second to press the position of contact.
18. the method for a plurality of pressures of identification according to claim 16 contact is characterized in that, and is further comprising the steps of:
When having the first pressure contact and the second pressure contact between described first conductive layer and described second conductive layer, calculate formed 12 groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact; And
Calculating described first according to described 12 groups of equivalent resistances presses contact and described second to press the position of contact.
19. the method for a plurality of pressures of identification according to claim 15 contact, it is characterized in that, wherein said first conductive layer comprises sensing electrode, described second conductive layer comprises described first electrode, described second electrode, described third electrode and described the 4th electrode, and described method is further comprising the steps of:
Choose two electrodes in described first electrode, described second electrode, described third electrode, described the 4th electrode and the described sensing electrode, these two electrodes are electrically connected power source supply end or earth terminal respectively to apply described voltage difference; And
Choose remaining electrode and electrically connect measuring unit to obtain a plurality of magnitudes of voltage.
20. the method for a plurality of pressures of identification according to claim 19 contact is characterized in that, and is further comprising the steps of:
When having the first pressure contact and the second pressure contact between described first conductive layer and described second conductive layer, calculate formed 14 groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, described sensing electrode, the described first pressure contact and the described second pressure contact; And
Calculating described first according to described 14 groups of equivalent resistances presses contact and described second to press the position of contact.
21. the method for a plurality of pressures of identification according to claim 19 contact is characterized in that, and is further comprising the steps of:
When having the first pressure contact and the second pressure contact between described first conductive layer and described second conductive layer, calculate formed nine groups of equivalent resistances between described first electrode, described second electrode, described third electrode, described the 4th electrode, the described first pressure contact and the described second pressure contact; And
Calculating described first according to described nine groups of equivalent resistances presses contact and described second to press the position of contact.
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| CN2007101694791A CN101436114B (en) | 2007-11-16 | 2007-11-16 | Touch control display apparatus and method for recognizing multiple press contacts |
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| CN102945075B (en) * | 2012-10-15 | 2016-12-21 | 深圳创维数字技术有限公司 | The method of a kind of light ray remote-control location, Apparatus and system |
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| CN1503195A (en) * | 2002-11-20 | 2004-06-09 | Lg.������Lcd��ʽ���� | Digital resistance type contact panel |
| CN1561500A (en) * | 2000-11-03 | 2005-01-05 | 伊罗接触系统公司 | Touchscreen having multiple parallel connections to each electrode in a series resistor chain on the periphery of the touch area |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1561500A (en) * | 2000-11-03 | 2005-01-05 | 伊罗接触系统公司 | Touchscreen having multiple parallel connections to each electrode in a series resistor chain on the periphery of the touch area |
| CN1503195A (en) * | 2002-11-20 | 2004-06-09 | Lg.������Lcd��ʽ���� | Digital resistance type contact panel |
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