CN107092383A - Touch processor - Google Patents

Touch processor Download PDF

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Publication number
CN107092383A
CN107092383A CN201710040089.8A CN201710040089A CN107092383A CN 107092383 A CN107092383 A CN 107092383A CN 201710040089 A CN201710040089 A CN 201710040089A CN 107092383 A CN107092383 A CN 107092383A
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China
Prior art keywords
conductive bar
signal
detecting
driving
phase difference
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Granted
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CN201710040089.8A
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Chinese (zh)
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CN107092383B (en
Inventor
张钦富
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Egalax Empia Technology Inc
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Empia Technology Inc
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)
  • Position Input By Displaying (AREA)

Abstract

The invention relates to a kind of touch processor.The measuring signal method and apparatus of touch-screen, each of touch-screen or each group of driving conductive bar correspond to a delay phase difference respectively.When each drive signal is provided, ability is by the described at least one detecting conductive bar measurement signal for detecting conductive bar after delay corresponds to and is provided the delay phase difference of one or one group driving conductive bar of drive signal.

Description

Touch processor
The application is entitled " the measuring signal method and apparatus of touch-screen " of Application No. 201310025203.1 The divisional application of application for a patent for invention, the applying date of original application is on 01 23rd, 2013.
Technical field
The invention relates to a kind of method for measurement of capacitive touch screen and device, particularly a kind of compensation resistance capacitance The method for measurement and device of the capacitive touch screen of current phase delay.
Background technology
Capacitive touch screen is, through the capacitive couplings between human body, to cause detection signal to produce change, so as to judge Go out the position that human body is touched on capacitive touch screen.When human body is touched, the noise of human body local environment also can be with human body Capacitive couplings injection between capacitive touch screen, also produces change to detection signal.Again because noise is constantly in change, and It is not easy to be predicted, when signal to noise ratio is smaller, easily causes and can not judge to touch, or the touch location deviation judged.
Further, since signal passes through some load circuits, such as pass through capacitive couplings, the signal that detecting conductive bar is received with It is supplied to the signal before driving conductive bar to produce phase difference.When the cycle of drive signal is all identical, different phase meters Show that the signal delay different time is received, if ignoring the foregoing direct measurement signal of phase difference, measuring signal can be caused Start phase difference and produce Different Results.If the result difference that the different conductive bars of correspondence are measured is very big, it can cause to be difficult to Judge correct position.
As can be seen here, above-mentioned existing technology is upper with using in structure, it is clear that has still suffered from inconvenience and defect, and has urgently added Further to improve.Therefore how to found a kind of measuring signal method and apparatus of the touch-screen of new structure, also as work as Preceding industry pole needs improved target.
The content of the invention
It is an object of the present invention to overcome the defect that existing technology is present, and provide a kind of touch-screen of new structure Measuring signal method and apparatus, technical problem to be solved is to make it in resistor capacitor circuit (RC circuit), letter Number can because of process load it is different and have delay, if ignore it is such postpone, the signal detected can not meet expection.This hair Bright purpose gives different time delays (or phase difference) in the different driving conductive bar of correspondence, to touch-screen be allowed to detect The signal of the shade arrived is optimized or levelized.
The object of the invention to solve the technical problems is realized using following technical scheme.According to present invention proposition A kind of touch-screen measuring signal method, including：Touch-screen is provided, touch-screen is led including a plurality of driving arranged in parallel The a plurality of conductive bar that electric bar is constituted with a plurality of detecting conductive bar arranged in parallel, described driving conductive bar and described detecting are conductive Bar overlaps on multiple crossover regions；Determine the delay phase difference of each or each group driving conductive bar；It is sequentially provided drive signal One or one group into described driving conductive bar, it is provided the driving conductive bar and described detecting conductive bar of drive signal Produce mutual capacitive couplings；And when each drive signal is provided, delay correspond to be provided one of drive signal or Just by least one detecting conductive bar measurement signal of described detecting conductive bar after the delay phase difference of one group of driving conductive bar.
The object of the invention to solve the technical problems can be also applied to the following technical measures to achieve further.
Foregoing measuring signal method, it is characterised in that determine the delay phase difference of each or each group driving conductive bar Including：One of described driving conductive bar or one group of conductive bar are sequentially selected as being selected conductive bar；And by multiple pre- The delay phase difference for being selected conductive bar is picked out in phase bit difference, conductive bar is selected wherein being provided in drive signal When, the signal for postponing to measure after described delay phase difference is more than the signal for postponing to be detected after other predetermined phases differences.
Foregoing measuring signal method, it is characterised in that when drive signal is provided to the conductive bar being selected, by described Detecting conductive bar in a plurality of measurement signal be the signal measured by one of described detecting conductive bar summation.
Foregoing measuring signal method, it is characterised in that when drive signal is provided to the conductive bar being selected, by described Detecting conductive bar in the signal of a plurality of measurement be to be measured by least two detecting conductive bars of described detecting conductive bar The summation of signal.
Foregoing measuring signal method, it is characterised in that determine the delay phase difference of each or each group driving conductive bar Including：One of described driving conductive bar or one group of conductive bar are selected as benchmark conductive bar, other or other groups of conductive bars It is used as non-referenced conductive bar；The delay phase difference of benchmark conductive bar is picked out in multiple predetermined phases difference, wherein in drive signal When being provided to benchmark conductive bar, the signal detected after the described delay phase difference of delay, which is more than, to postpone to detect after other predetermined phases are poor The signal measured；The signal for postponing to detect after described delay phase difference using benchmark conductive bar is used as reference signal；Sequentially select institute One of the non-referenced conductive bar stated or one group of non-referenced conductive bar are as being selected conductive bar；And in multiple predetermined phases difference The delay phase difference for being selected conductive bar is picked out, wherein when drive signal is provided to and is selected conductive bar, described in delay After delay phase difference the signal detected compared to the signal for postponing to detect after other predetermined phases are poor closest to reference signal.
Foregoing measuring signal method, it is characterised in that drive signal is provided to benchmark conductive bar or the conduction being selected During bar, the signal by a plurality of measurement in described detecting conductive bar is the signal measured by one of described detecting conductive bar.
Foregoing measuring signal method, it is characterised in that drive signal is provided to benchmark conductive bar or the conduction being selected During bar, the signal by a plurality of measurement in described detecting conductive bar is led by least two detectings of described detecting conductive bar The summation for the signal that electric bar is measured.
The object of the invention to solve the technical problems is also realized using following technical scheme.According to proposed by the present invention A kind of measuring signal method of touch-screen, including：Touch-screen is provided, it is conductive that touch-screen includes a plurality of driving arranged in parallel The a plurality of conductive bar that bar is constituted with a plurality of detecting conductive bar arranged in parallel, described driving conductive bar and described detecting are conductive Bar overlaps on multiple crossover regions；With each or each group of driving conductive bar and overlap each respectively or each group of detecting is conductive Bar is combined as detecting；Determine the delay phase difference of each detecting combination；It is sequentially provided drive signal conductive to described driving One in bar or one group, be provided in the detecting combination for being provided drive signal the driving conductive bar of drive signal with it is overlapping Detect conductive bar and produce mutual capacitive couplings；And when each drive signal is provided, is provided each of drive signal and detects The signal for surveying combination is just measured after postponing corresponding phase difference.
The object of the invention to solve the technical problems can be also applied to the following technical measures to achieve further.
Foregoing measuring signal method, it is characterised in that determining the delay phase difference of each detecting combination includes：Sequentially choose One of described detecting combination of choosing, which is used as, is selected detecting combination；And pick out in multiple predetermined phases difference and be selected detecting The delay phase difference of combination, wherein when drive signal is provided to and is selected detecting combination, the described delay phase difference of delay The signal measured afterwards is more than the signal for postponing to be detected after other predetermined phase differences.
Foregoing measuring signal method, it is characterised in that determining the delay phase difference of each detecting combination includes：Select institute One of detecting combination stated is detected as benchmark and combined, and other detecting combinations are detected as non-referenced combines；By multiple predetermined phases The delay phase difference of benchmark detecting combination is picked out in potential difference, wherein when drive signal is provided to benchmark detecting combination, prolonging The signal detected late after described delay phase difference is more than the signal for postponing to be detected after other predetermined phase differences；Detected with benchmark The signal detected after delay phase difference described in combinatorial delays is as reference signal；Sequentially select described non-referenced detecting combination One of as be selected detecting combination；And the delay phase for being selected detecting combination is picked out in multiple predetermined phases difference Difference, wherein when drive signal is provided to and is selected detecting combination, the signal phase detected after the described delay phase difference of delay Compared with the signal for postponing to detect after other predetermined phases are poor closest to reference signal.
The object of the invention to solve the technical problems is realized using following technical scheme again in addition.Carried according to the present invention A kind of measuring signal device of the touch-screen gone out, including：Touch-screen, including a plurality of driving conductive bar arranged in parallel with it is flat The a plurality of conductive bar of a plurality of detecting conductive bar composition of row arrangement, described driving conductive bar is overlapped with described detecting conductive bar In multiple crossover regions；Drive circuit, is sequentially provided one or one group of drive signal into described driving conductive bar, is provided The driving conductive bar of drive signal produces mutual capacitive couplings, each of which or each group of driving with described detecting conductive bar Conductive bar correspondence delay phase difference；And circuit for detecting, determine the delay phase difference of each or each group driving conductive bar simultaneously And when each drive signal is provided, delay corresponds to the delay for one or one group driving conductive bar for being provided drive signal Just by least one detecting conductive bar measurement signal of described detecting conductive bar after phase difference.
The object of the invention to solve the technical problems can be also applied to the following technical measures to achieve further.
Foregoing measuring signal device, it is characterised in that drive circuit, which is further included, sequentially selects described driving conductive bar One or one group of conductive bar are further included and chosen in multiple predetermined phases difference as the device for being selected conductive bar, and circuit for detecting The device for the delay phase difference for being selected conductive bar is selected, wherein when drive signal is provided to and is selected conductive bar, delay The signal measured after described delay phase difference is more than the signal for postponing to be detected after other predetermined phase differences.
Foregoing measuring signal device, it is characterised in that when drive signal is provided to the conductive bar being selected, by described Detecting conductive bar in a plurality of measurement signal be the signal measured by one of described detecting conductive bar summation.
Foregoing measuring signal device, it is characterised in that when drive signal is provided to the conductive bar being selected, by described Detecting conductive bar in the signal of a plurality of measurement be to be measured by least two detecting conductive bars of described detecting conductive bar The summation of signal.
Foregoing measuring signal device, it is characterised in that drive circuit selects one or one group of described driving conductive bar Conductive bar using other or other groups of conductive bars as non-referenced conductive bar, and drives electricity as the device of benchmark conductive bar One of described non-referenced conductive bar or one group of non-referenced conductive bar are sequentially selected as being selected conductive bar in road；Circuit for detecting The delay phase difference of benchmark conductive bar is picked out in multiple predetermined phases difference, wherein it is conductive to be provided to benchmark in drive signal During bar, the signal detected after the described delay phase difference of delay is more than the signal for postponing to be detected after other predetermined phase differences, and And circuit for detecting is to postpone the signal detected after described delay phase difference using benchmark conductive bar as reference signal, and by many The delay phase difference for being selected conductive bar is picked out in individual predetermined phase difference, conduction is selected wherein being provided in drive signal During bar, the signal detected after the described delay phase difference of delay is compared to the signal for postponing to detect after other predetermined phases are poor most Close to reference signal.
Foregoing measuring signal device, it is characterised in that drive signal is provided to benchmark conductive bar or the conduction being selected During bar, the signal by a plurality of measurement in described detecting conductive bar is the signal measured by one of described detecting conductive bar.
Foregoing measuring signal device, it is characterised in that drive signal is provided to benchmark conductive bar or the conduction being selected During bar, the signal by a plurality of measurement in described detecting conductive bar is led by least two detectings of described detecting conductive bar The summation for the signal that electric bar is measured.
The object of the invention to solve the technical problems is also realized using following technical scheme in addition.Carried according to the present invention A kind of measuring signal device of the touch-screen gone out, including：Touch-screen, including a plurality of driving conductive bar arranged in parallel with it is flat The a plurality of conductive bar of a plurality of detecting conductive bar composition of row arrangement, described driving conductive bar is overlapped with described detecting conductive bar In multiple crossover regions；Drive circuit, is sequentially provided one or one group of drive signal into described driving conductive bar, is provided The driving conductive bar of drive signal is provided in the detecting combination of drive signal and overlapping detecting conductive bar produces mutual capacitive Coupling, each of which or each group of driving conductive bar and overlaps each or each group of detecting conductive bar is used as detecting group respectively Merge and each detecting combination correspondence delay phase difference；And circuit for detecting is provided drive when each drive signal is provided The signal of each detecting combination of dynamic signal is just measured after postponing corresponding phase difference.
The object of the invention to solve the technical problems can be also applied to the following technical measures to achieve further.
Foregoing measuring signal device, it is characterised in that drive circuit sequentially selects one of described detecting combination and is used as quilt Select detecting combination；And circuit for detecting picks out the delay phase difference for being selected detecting combination in multiple predetermined phases difference, Wherein when drive signal is provided to and is selected detecting combination, the signal measured after the described delay phase difference of delay, which is more than, to be prolonged The signal detected late after other predetermined phase differences.
Foregoing measuring signal device, it is characterised in that drive circuit is selected one of described detecting combination and detectd as benchmark Combination is surveyed, other detecting combinations are detected as non-referenced combines, and drive circuit sequentially selects described non-referenced detecting group One of conjunction is combined as detecting is selected；And circuit for detecting picks out prolonging for benchmark detecting combination in multiple predetermined phases difference Slow phase difference, wherein when drive signal is provided to benchmark detecting combination, the letter detected after the described delay phase difference of delay Number it is more than the signal for postponing to be detected after other predetermined phases difference, and circuit for detecting is with described in benchmark detecting combinatorial delays The signal detected is as reference signal after delay phase difference, and picked out in multiple predetermined phases difference and be selected detecting combination Delay phase difference, wherein when drive signal is provided to and is selected detecting combination, being detectd after the described delay phase difference of delay The signal of survey is compared to the signal for postponing to detect after other predetermined phases are poor closest to reference signal.
The present invention has clear advantage and beneficial effect compared with prior art.From above technical scheme, this hair Bright main technical content is as follows：According to a kind of measuring signal method of touch-screen proposed by the present invention, including：There is provided and touch Screen, touch-screen includes a plurality of conduction that a plurality of driving conductive bar arranged in parallel is constituted with a plurality of detecting conductive bar arranged in parallel Bar, described driving conductive bar overlaps on multiple crossover regions with described detecting conductive bar；Determine each or each group of driving One delay phase difference of conductive bar；One or one group of drive signal into described driving conductive bar is sequentially provided, is provided The driving conductive bar of drive signal produces mutual capacitive couplings with described detecting conductive bar；And carried in each drive signal For when, delay, which corresponds to, to be provided after the delay phase difference of one or one group driving conductive bar of drive signal ability and is detectd by described Survey at least one detecting conductive bar measurement signal of conductive bar.According to a kind of measuring signal side of touch-screen proposed by the present invention Method, including：Touch-screen is provided, it is conductive with a plurality of detecting arranged in parallel that touch-screen includes a plurality of driving conductive bar arranged in parallel The a plurality of conductive bar of bar composition, described driving conductive bar overlaps on multiple crossover regions with described detecting conductive bar；With each Bar or each group of driving conductive bar and each or each group of detecting conductive bar are overlapped respectively be used as detecting combination；Determine each detect Survey the delay phase difference of combination；One or one group of drive signal into described driving conductive bar is sequentially provided, drive is provided The driving conductive bar of drive signal is provided in the detecting combination of dynamic signal and overlapping detecting conductive bar produces mutual capacitive coupling Close；And when each drive signal is provided, the signal for being provided each detecting combination of drive signal is that delay is corresponding Just it is measured after phase difference.According to a kind of measuring signal device of touch-screen proposed by the present invention, including：Touch-screen, including it is flat The a plurality of conductive bar that a plurality of driving conductive bar of row arrangement is constituted with a plurality of detecting conductive bar arranged in parallel, described driving is led Electric bar overlaps on multiple crossover regions with described detecting conductive bar；Drive circuit, is sequentially provided drive signal to described driving One in conductive bar or one group, the driving conductive bar and described detecting conductive bar for being provided drive signal produce mutual capacitive Coupling, each of which or each group of driving conductive bar correspondence delay phase difference；And circuit for detecting, determine each or each Organize the delay phase difference of driving conductive bar and when each drive signal is provided, delay, which corresponds to, is provided drive signal Just by least one detecting conductive bar amount of described detecting conductive bar after the delay phase difference of one or one group driving conductive bar Survey signal.According to a kind of measuring signal device of touch-screen proposed by the present invention, including：Touch-screen, including it is arranged in parallel many Bar drives a plurality of conductive bar that conductive bar is constituted with a plurality of detecting conductive bar arranged in parallel, described driving conductive bar with it is described Detecting conductive bar overlap on multiple crossover regions；Drive circuit, is sequentially provided drive signal into described driving conductive bar One or one group, it is provided the driving conductive bar of drive signal in the detecting combination for being provided drive signal and overlapping detecting is led Electric bar produces mutual capacitive couplings, each of which or each group of driving conductive bar and overlapping each or each group of detecting respectively Conductive bar is used as detecting combination and each detecting combination correspondence delay phase difference；And circuit for detecting is in each drive signal quilt During offer, the signal for being provided each detecting combination of drive signal is just measured after postponing corresponding phase difference.
By above-mentioned technical proposal, the measuring signal method and apparatus of inventive touch screen at least has following advantages and had Beneficial effect：The different driving conductive bar of correspondence gives different time delays (or phase difference), the shadow that touch-screen can be allowed to detect The signal of phase is optimized or levelized.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, And can be practiced according to the content of specification, and in order to allow above and other objects of the present invention, feature and advantage can Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
Fig. 1 and Fig. 4 is the condenser type touch screen of the present invention and its schematic diagram of control circuit；
Fig. 2A is the schematic diagram of single electrode drive pattern；
The schematic diagram of Fig. 2 B and Fig. 2 C bipolar electrode drive pattern；
Fig. 3 A and Fig. 3 B are the schematic flow sheet of the method for detecting of the detecting capacitance type touch-screen of the present invention；
Fig. 5 is the schematic diagram for producing complete image；
Fig. 6 inside contracts the schematic diagram of image to produce；
Fig. 7 A and Fig. 7 B extend out the schematic diagram of image to produce；
Fig. 8 extends out the schematic flow sheet of image for present invention generation；
Fig. 9 A and Fig. 9 B are the schematic diagram that drive signal produces out of phase difference via different driving conductive bar；And
Figure 10 and Figure 11 is the schematic flow sheet of the measuring signal method of the touch-screen according to the first embodiment of the present invention.
【Main element symbol description】
11：Frequency circuit 12：Pulse width adjusting circuit
131：Driving switch 132：Detection switch
141：Drive selection circuit 142：Detect selection circuit
151：Driving electrodes 152：Detect electrode
16：Variable resistor 17：Amplifying circuit
18：Measurement circuit 19：External conductive object
41：Drive circuit 42：Circuit for detecting
43：Storage circuit 44：Frequency setting
51：Complete image 52：The dimension sensitive information of single electrode driving
61：Inside contract image 62：The dimension sensitive information of bipolar electrode driving
71：Extend out image 45：Controller
721：The dimension sensitive information of first side single electrode driving
722：The dimension sensitive information of second side single electrode driving
S：Drive signal
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with Accompanying drawing and preferred embodiment, to according to the measuring signal method and apparatus of touch-screen proposed by the present invention its embodiment, Structure, feature and its effect, are described in detail as after.
Capacitive touch screen is highly susceptible to noise jamming, especially from touching the human body in touch-screen.The present invention The purpose of reduction noise jamming is reached using the type of drive of adaptability.
In capacitive touch screen, including a plurality of longitudinal direction and transversely arranged electrode, for detecting the position of touch, wherein The consumption of electric power and the number of electrodes driven with the time and the voltage positive correlation of driving.When touch detecting, noise may As the conductor of touch is conducted to capacitive touch screen so that signal to noise ratio (S/N ratio) is deteriorated, and easily causes the erroneous judgement of touch With position deviation.In other words, signal to noise ratio can dynamically change with the object of touch with residing environment.
Referring to Fig. 1, be the present invention condenser type touch screen and its control circuit schematic diagram, including frequency circuit 11, Pulse width adjusting circuit 12, driving switch 131, detection switch 132, driving selection circuit 141, detecting selection circuit 142, extremely Few driving electrodes 151, at least detecting electrode 152, variable resistor 16, amplifying circuit 17 and measurement circuit 18.Capacitive touch screen Can include a plurality of driving electrodes 151 and a plurality of detecting electrode 152, the driving electrodes 151 are handed over the detecting electrode 152 It is laminated on multiple overlapping places.
Frequency circuit 11 provides the frequency signal that whole system is provided according to working frequency, and pulse width adjusting circuit 12 provide pulse width adjustment signal according to frequency signal and pulse width adjusting parameter, to drive driving electrodes 151.Driving is opened 131 drivings for controlling driving electrodes are closed, and are that at least one driving electrodes 151 are selected by selection circuit 141.In addition, detecting Switch 132 controls the electrical couplings between driving electrodes and measurement circuit 18.When driving switch 131 is conducting (on), detecting Switch 132 is disconnects (off), and pulse width adjusts signal and is supplied to via driving selection circuit 141 by driving selection circuit 141 The driving electrodes 151 of coupling, wherein driving electrodes 151 can be a plurality of, and selected driving electrodes 151 can be the drive One, two or a plurality of in moving electrode 151.When driving electrodes 151 are by pulse width adjustment signal driving, electrode is detected The 152 overlapping places overlapped with powered driving electrodes 151 can produce capacitive couplings, and each detecting electrode 152 exists Input signal is provided during with 151 capacitive couplings of driving electrodes.Variable resistor 16 is to provide impedance, input letter according to resistance parameter Number it is to be supplied to detecting selection circuit 142 via variable resistor 16, detecting selection circuit 142 is selected in a plurality of detecting electrode 152 Select one, two, three, it is a plurality of or all detecting electrode 152 be coupled in amplifying circuit 17, input signal is via amplifying circuit Measurement circuit 18 is supplied to after 17 foundation gain parameters.Measurement circuit 18 is detectd according to pulse width adjustment signal and frequency signal Input signal is surveyed, wherein measurement circuit 18 can be sampled according to phase parameter at least phase for detection signal, for example Measurement circuit 18 can have at least integrating circuit, each integrating circuit respectively according to phase parameter at least phase to institute The input signal stated in input signal is integrated, to measure the size of input signal.In the example of the present invention, each product Parallel circuit can also be respectively according to phase parameter in signal of at least phase to a pair of input signals in the input signal Difference is integrated, or respectively according to phase parameter in letter of at least phase to two pairs of input signals in the input signal Number poor difference is integrated.In addition, it is that few analog-to-digital electric (ADC) is detectd integrating circuit that measurement circuit 18, which can also be included, Measure the result come and change into data signal.In addition, those of ordinary skill of this technology neck with usual knowledge is it can be deduced that foregoing Input signal can be first pass through amplifying circuit 17 amplify after measurement circuit 18 is supplied to by detecting selection circuit 142 again, this Invention is not any limitation as.
In the present invention, capacitive touch screen has at least two drive patterns, be divided into most power saving single electrode drive pattern, Bipolar electrode drive pattern, and have at least one driving current potential.Each drive pattern has corresponding to different driving current potentials At least one working frequency, each working frequency one group of parameter of correspondence, and each drive pattern corresponds to different drives Electrokinetic potential represents different degrees of power consumption.
The electrode of capacitive touch screen can be divided into a plurality of driving electrodes 151 and a plurality of detecting electrode 152, the driving electricity Pole 151 overlaps on multiple overlapping places (intersection) with the detecting electrode 152.Fig. 2A is referred to, in single electrode driving In pattern, a driving electrodes 151 are once driven, that is, driving is provided in only one driving electrodes 151 of same time Signal S, when any bar driving electrodes 151 are driven, detects the signal of all detecting electrodes 152 to produce a dimension sense Measurement information.Accordingly, after all driving electrodes 151 are driven, the dimension sense corresponding to each driving electrodes 151 can be obtained Measurement information, to constitute the complete image relative to all overlapping places.
Fig. 2 B and 2C are referred to, in bipolar electrode drive pattern, adjacent pair driving electrodes 151 are once driven.Change speech It, the driving electrodes 151 of n bars will drive n-1 times altogether, and a pair of driving electrodes 151 in office are when being driven, and detect all detectings The signal of electrode 152 is to produce a dimension sensitive information.For example, first such as Fig. 2 B, while providing drive signal S to first To driving electrodes 151, if 5 it is necessary to driving 4 times.Next, as shown in Figure 2 C, while providing drive signal S to second To driving electrodes 151, by that analogy.Accordingly, after every a pair of driving electrodes 151 (common n-1 to) are driven, it can be corresponded to The dimension sensitive information of every a pair of driving electrodes 151, inside contracts image relative to foregoing complete image to constitute, inside contracts image Pixel quantity be less than complete image pixel quantity.In another example of the present invention, bipolar electrode drive pattern is further included point It is other that single electrode driving is carried out to both sides driving electrodes 151, and when either side list driving electrodes 151 are driven, detecting is all The signal of electrode 152 is detected to produce a dimension sensitive information, to be additionally provided two dimension sensitive informations, with inside contracting Image composition extends out image.Dimension sensitive information for example corresponding to both sides is respectively placed in outside the both sides for inside contract image to constitute Extend out image.
The art has the ordinary person of usual knowledge it can be deduced that the present invention can more include three electrode drive moulds Formula, four electrode drive patterns etc., are no longer described herein.
Foregoing driving current potential can be that, including but not limited at least two driving current potentials, such as low-driving potential drives with high Current potential, higher driving current potential has higher signal to noise ratio.
According to foregoing, in single electrode drive pattern, complete image can be obtained, and in bipolar electrode drive pattern, can Acquirement inside contracts image or extends out image.Complete image, interior epitome or extend out image can be outside conductive object 19 close to or Obtained when touching before capacitive touch screen with capacitive touch screen, judge that outside is led so as to producing the variable quantity of each pixel The position of electric object 19.Wherein, described external conductive object 19 can be one or more.Also it has been observed that external conductive pair As 19 close to or when touching capacitive touch screen, or with the driving electrodes 151 and the detecting capacitive couplings of electrode 152, And noise jamming is caused, even if driving electrodes 151 are not driven, external conductive object 19 may also be with the driving electrodes 151 detect the capacitive couplings of electrode 152 with described.In addition, noise may also be disturbed from other approach.
Accordingly, in one example of the present invention, when carrying out noise detection process, driving switch 131 disconnects, and detects Switch 132 is turned on, and now measurement circuit can produce the dimension sensing of noise detecting according to the signal of the detecting electrode 152 Information, so as to judging noise jamming whether in accordance with permissible range.For example, it may be judging the dimension sensing letter of noise detecting Breath whether have any value exceed door limit value, or noise detecting dimension sensitive information all values totalling or be averagely It is no to exceed door limit value, to judge noise jamming whether in accordance with permissible range.The art has the technology people of general knowledge Member can deduce other dimension sensitive informations detected by noise judge noise jamming whether in accordance with permissible range side Formula, the present invention is not described.
Noise detection process can be obtained foregoing complete image when system is activated or each time, inside contract image or outer Carry out or timing or carry out during through repeatedly obtaining foregoing complete image, inside contracting image or extending out image when expanding image, or It is to have detected external conductive object to approach or carry out when touching, the technical staff that the art has general knowledge can push away Know the opportune moment of other progress noise detection process, the present invention is not any limitation as.
It is to carry out frequency error factor when judging that noise jamming exceeds permissible range the present invention additionally provides sound interval sequence is changed.Amount Slowdown monitoring circuit is provided multigroup frequency setting, can be stored in internal memory or other store medias, to provide measurement circuit in changing Selected in sound interval sequence, and according to the frequency signal for the FREQUENCY CONTROL frequency circuit 11 selected.It can be in the frequency to change sound interval sequence Appropriate frequency setting is picked out in rate setting one by one, for example, select one of which frequency setting one by one and carry out noise detection process, Untill detecting noise jamming in accordance with permissible range.It can also be picked out one by one most in the frequency setting to change sound interval sequence Good frequency setting.For example selected one by one in the frequency setting and carry out noise detection process, detect wherein that noise jamming is most Small frequency setting, such as detects frequency setting of the maximum for the dimension sensitive information that noise is detected for minimum, or noise The minimum frequency setting of the totalling or average out to of all values of the dimension sensitive information of detecting.
Described frequency setting corresponds to including but not limited to drive pattern, frequency and parameter group.Parameter group can be bag Include but be not limited to be selected from following collection group：Foregoing resistance parameter, aforesaid gains parameter, Such phase parameter and aforementioned pulse are wide Spend adjusting parameter, this technology neck with usual knowledge those of ordinary skill can deduce it is other be applied to capacitive touch screen and It controls the relevant parameter of circuit.
The frequency setting can be including multiple driving current potentials as shown in following table 1, it is following with the first driving current potential with Exemplified by second driving current potential, it can have more than three kinds of drive that there is the art the ordinary person of usual knowledge, which can deduce, Electrokinetic potential.Each driving current potential can have multiple drive modes, the including but not limited to group selected from following collection respectively：It is single Electrode drive pattern, bipolar electrode drive pattern, three electrode drive patterns, four electrode drive patterns etc..Each driving current potential Each corresponding drive pattern has multi-frequency respectively, and each frequency corresponds to a kind of foregoing parameter group.This technology There is the ordinary person of usual knowledge can deduce that the frequency of each each corresponding drive pattern of driving current potential can in field To be entirely different or have part identical, the present invention is not any limitation as.Table 1
According to a kind of above-mentioned, method for detecting of detecting capacitance type touch-screen of present invention offer, Fig. 3 A are referred to.First as walked Shown in rapid 310, multiple frequency settings are sequentially stored according to power consumption size, each frequency setting is respectively corresponding to a kind of driving electricity A kind of drive pattern of position, and each frequency setting has frequency and parameter group, wherein driving current potential has at least one.Connect Get off, as shown at step 320, the parameter group according to one of the frequency setting initializes the setting of circuit for detecting, and as walked Shown in rapid 330, according to circuit for detecting parameter group with circuit for detecting detect from it is described detecting electrode signal, and according to from The signal of the detecting electrode produces a dimension sensitive information.Next, as indicated in step 340, according to described one-dimensional Degree sensitive information judges whether the interference of noise exceeds permissible range.Then, as shown in step 350, in the interference of the noise During more than the permissible range, sequentially the frequency and parameter group according to one of described frequency setting change the work frequency respectively Rate judges with producing the dimension sensitive information after the setting of the circuit for detecting, and according to the dimension sensitive information Whether the interference of the noise exceeds the permissible range, until the interference of the noise is not less than Cheng Suoshu permissible ranges. Can be as shown in Fig. 3 B step 360, when the interference of the noise exceedes the permissible range, according to each frequency setting Frequency and parameter group change the working frequency respectively and believe with producing the dimension sensing after the setting of the circuit for detecting Breath, and judge according to the dimension sensitive information interference of the noise, and with by the minimum frequency of the noise jamming The frequency of rate setting changes the setting of the working frequency and the circuit for detecting with parameter group respectively.
It is a kind of arrangement for detecting of detecting capacitance type touch-screen according to the present invention for example shown in Fig. 4, including：Storage electricity Road 43, drive circuit 41, circuit for detecting 42.As shown in abovementioned steps 310, storage circuit 43 includes multiple frequency settings 44, point Not sequentially stored according to power consumption size.Storage circuit 43 can be with circuit, internal memory or any can store the storage matchmaker of electromagnetic recording Body.In the example of the present invention, frequency setting 44 can be constituted in the way of tabling look-up, in addition, frequency setting 44 can also be stored up Deposit power consumption parameter.
Drive circuit 41 can be the integrated of multiple circuits, including but not limited to foregoing frequency circuit 11, pulse width Adjustment circuit 12, driving switch 131, detection switch 132 and driving selection circuit 141.Institute's column circuits are convenient in this example Present invention explanation, drive circuit 41 can only include part circuit or add more circuits, and the present invention is not any limitation as.It is described Drive circuit is for providing at least driving electrodes 151 of the drive signal to capacitive touch screen according to working frequency, wherein electricity Appearance formula touch-screen includes a plurality of driving electrodes 151 and a plurality of detecting electrode 152, the driving electrodes 151 and the detecting electrode 152 overlap on multiple overlapping places.
Circuit for detecting 42 can be the integrated of multiple circuits, including but not limited to foregoing measurement circuit 18, amplifying circuit 17, Detect selection circuit 142, it might even be possible to be that include can power transformation group 16.Institute's column circuits are convenient present invention explanations in this example, Circuit for detecting 42 can only include part circuit or add more circuits, and the present invention is not any limitation as.In addition, circuit for detecting 42 Execution abovementioned steps 320 are further included to step 340, and perform step 350 or step 360.In Fig. 3 B example, the frequency Rate setting can sequentially be stored not based on power consumption size.
As it was earlier mentioned, the dimension whether interference for judging the noise exceeds the permissible range is sensed Information is produced when the drive signal is not provided to the driving electrodes.For example, be driving selection circuit 131 for disconnect And when detecting selection circuit 132 for conducting.
In the example of the present invention, current potential is at least driven there are multiple drive modes, the drive pattern drives including single electrode Dynamic model formula and bipolar electrode drive pattern, wherein drive signal only provides the driving with the time described in single electrode drive pattern One of electrode, and in bipolar electrode drive pattern, the drive signal only provides a pair of the driving electrodes with the time.Its Described in single electrode drive pattern power consumption size be less than the bipolar electrode drive pattern power consumption size.In addition, in the list In electrode drive formula, the circuit for detecting is to produce the dimension respectively when each driving electrodes are provided drive signal Sensitive information, to constitute complete image, and wherein in the bipolar electrode drive-type, the circuit for detecting is in every a pair of drives Moving electrode produces the dimension sensitive information respectively when being provided drive signal, image is inside contracted to constitute, wherein described inside contract The pixel of image is less than the pixel of the complete image.In addition, circuit for detecting can further include difference in bipolar electrode drive pattern Two lateral electrodes are driven, and when the single driving electrodes of either side are driven, detect the signal of all detecting electrodes To produce the dimension sensitive information respectively, wherein two dimensions sensing produced by being driven respectively to two lateral electrodes Information is placed in described inside contract the both sides of image outside and extends out image to constitute, and the pixel for extending out image is more than described complete The pixel of whole image.
In another example of the present invention, the driving current potential includes the first driving current potential and the second driving current potential, wherein The power consumption size of the complete image is produced corresponding to the single electrode drive pattern of the described first driving current potential>Corresponding to institute State the power consumption size that image is inside contracted described in the bipolar electrode drive pattern generation of the first driving current potential>Driven corresponding to described second The single electrode drive pattern of electrokinetic potential produces the power consumption size of the complete image.
In another example of the present invention, the driving current potential includes the first driving current potential and the second driving current potential, wherein The power consumption size of the complete image is produced corresponding to the single electrode drive pattern of the described first driving current potential>Corresponding to institute The single electrode drive pattern for stating the second driving current potential produces the power consumption size of the complete image.
In addition, in the example of the present invention, the signal of each detecting electrode is to first pass through variable resistor respectively to provide again To the circuit for detecting, the circuit for detecting is the resistance of the parameter group setting variable resistor according to one of the frequency setting It is anti-.In addition, the signal of the detecting electrode is just detected after first passing through at least amplifying circuit amplified signal, the circuit for detecting It is the gain of the parameter group setting amplifying circuit according to one of the frequency setting.Furthermore, the drive signal is foundation The parameter group of one of the frequency setting is produced.
In the example of the present invention, each value of the dimension sensitive information is respectively with the cycle of setting according to described Detect the signal of electrode to produce, wherein the cycle of the setting is the parameter group according to one of the frequency setting to set. In another example of the present invention, each value of the dimension sensitive information is phase foundation institute respectively at least to set State the signal of detecting electrode to produce, wherein the phase of the setting is the parameter group according to one of the frequency setting to set It is fixed.
In addition, foregoing drive circuit 41, circuit for detecting 42 can be controlled by control circuit 45 with storage circuit 43.Control Circuit 45 processed can be can Programming processor or other control circuits, the present invention is not intended to limit.
Referring to Fig. 5, being the schematic diagram of the single electrode drive pattern according to the present invention.Drive signal S is sequentially provided to One driving electrodes, Article 2 driving electrodes ..., to the last a driving electrodes, and being driven in each driving electrodes The dimension sensitive information 52 of single electrode driving is produced during dynamic signal S drivings.Each driving electrodes of set are produced when being driven Single electrode driving dimension sensitive information 52, may make up complete image 51, each value difference of complete image 51 is corresponding The capacitively coupled change of one of the electrode confluce.
In addition, each value of complete image is respectively corresponding to the position at one of the overlapping place.For example, each driving The middle position of electrode is respectively corresponding to first dimension coordinate, and the center of each article of detecting electrode is respectively corresponding to the Two dimension coordinates.First dimension coordinate can be that laterally (or level, X-axis) coordinate is sat with longitudinal direction (or vertical, Y-axis) Mark one of, and second dimension coordinate can be laterally (or level, X-axis) coordinate with longitudinally (or vertical, Y-axis) coordinate it It is another.Each overlapping place is respectively corresponding to overlap on the driving electrodes and a two-dimensionses coordinate of detecting electrode at overlapping place, Two-dimensionses coordinate is to be made up of first dimension coordinate with second dimension coordinate, such as (first dimension coordinate, second Individual dimension coordinate) or (second dimension coordinate, first dimension coordinate).In other words, the one of each single electrode driving Dimension sensitive information is respectively corresponding to first dimension coordinate in one of described driving electrodes center, and wherein single electrode drives Each value (or each value of complete image) of dimension sensitive information is respectively corresponding to one of driving electrodes center First dimension coordinate and detecting one of electrode center the two-dimensionses coordinate that constitutes of second dimension coordinate.Together Reason, each value of complete image is respectively corresponding to the middle position at one of the overlapping place, that is, be respectively corresponding to the driving First dimension coordinate in one of electrode center, the second dimension coordinate composition central with one of the detecting electrode Two-dimensionses coordinate.
Referring to Fig. 6, being the schematic diagram of the bipolar electrode drive pattern according to the present invention.Drive signal S is sequentially provided to A pair of driving electrodes, second pair of driving electrodes ..., to the last a pair of driving electrodes, and being driven in every a pair of driving electrodes The dimension sensitive information 62 of bipolar electrode driving is produced during dynamic signal S drivings.In other words, N bars driving electrodes may make up N-1 pairs (multipair) driving electrodes.Gather the dimension sensitive information 62 of the bipolar electrode driving produced when every a pair of driving electrodes are driven, It may make up and inside contract image 61.Inside contract number of the quantity less than the value (or pixel) of complete image 51 of the value (or pixel) of image 61 Amount.Relative to complete image, the dimension sensitive information for inside contracting each bipolar electrode driving of image is respectively corresponding to a pair of drives First dimension coordinate of middle position between moving electrode, and during each value is respectively corresponding between foregoing a pair of driving electrodes Entreat the two-dimensionses of first dimension coordinate of position, the second dimension coordinate composition central with one of the detecting electrode Coordinate.In other words, each value for inside contracting image is respectively corresponding to central position between a pair of overlapping places, that is, is respectively corresponding to one To first dimension coordinate of middle position between driving electrodes one of (or the multipair driving electrodes) and the detecting electrode One of center second dimension coordinate constitute two-dimensionses coordinate.
Fig. 7 A are referred to, are the schematic diagram that the first side single electrode driving is carried out in bipolar electrode drive pattern under this invention. Drive signal S is provided to the driving electrodes closest to the side of capacitive touch screen first, and closest to capacitive touch screen The first side dimension sensitive information 721 of single electrode driving is produced when the driving electrodes of first side are driven by drive signal S.Again please It is the schematic diagram that the second side single electrode driving is carried out in bipolar electrode drive pattern under this invention refering to Fig. 7 B.Drive signal S quilts The driving electrodes closest to the side of capacitive touch screen second are supplied to, and in the driving closest to the side of capacitive touch screen second The second side dimension sensitive information 722 of single electrode driving is produced when electrode is driven by drive signal S.First side and the second side The dimension sensitive information 721 and 722 for the single electrode driving that driving electrodes are produced when being driven, which is respectively disposed in, inside contracts image 61 The first side and the second side outer image 71 is extended out with composition.The quantity for extending out the value (or pixel) of image 71 is more than complete image 51 Value (or pixel) quantity.It is the first side dimension sensing letter for first producing single electrode driving in one example of the present invention Breath 721, then produce and inside contract image 61, then the second side dimension sensitive information 722 of single electrode driving is produced, extended out with constituting one Image 71.First to produce to inside contract image 61 in another example of the present invention, then produce respectively the first side of single electrode driving with Second side dimension sensitive information 721 and 722, image 71 is extended out to constitute one.
In other words, extending out image is the first side dimension sensitive information sequentially driven by single electrode, inside contracts image and list Second side dimension sensitive information of electrode drive is constituted.Because the value for inside contracting image 61 is bipolar electrode driving, therefore averagely greatly It is small to be more than the first side and the mean size of the value of the second side dimension image that single electrode drives.In the example of the present invention, The value of first side and the second side dimension sensitive information 721 and 722 is just to be respectively placed in inside contract image 61 after scaling The first side and the second side outside.The ratio can be preset multiple, and this preset multiple is more than 1 or according to bipolar electrode Ratio between the value of the dimension sensitive information of value and the single electrode driving of the dimension sensitive information of driving is produced.E.g. The all values summation (or average) of the dimension sensitive information 721 of side is believed with inside contracting the dimension sensing of adjacent first side in image The ratio of 62 all values summations (or average) is ceased, the value of the first side dimension sensitive information 721 is the ability after this is scaling It is placed in outside the first side for inside contracting image 61.Similarly, be the second side dimension sensitive information 722 all values summation (or average) With the ratio for all values summation of dimension sensitive information 62 (or average) for inside contracting adjacent second side in image, the second side dimension sense The value of measurement information 722 is just placed in after this is scaling outside the second side for inside contracting image 61.In another example, foregoing ratio can To be all values summation (or average) and the dimension sensitive information 721 and 722 of the first side and the second side for inside contracting image 61 The ratio of all values summation (or average).
In single electrode drive pattern, each value (or pixel) of complete image is stacked the two-dimensionses position at place (or coordinate), is by the corresponding first dimension position (or coordinate) of the driving electrodes for being mutually laminated on being stacked and detecting electrode phase The second dimension position (or coordinate) answered is constituted, such as (first dimension position, second dimension position) or (the Two dimension positions, first dimension position).Single external conductive object may be with one or more overlapping place's capacitive characters Coupling, capacitively coupled change can be produced with the capacitively coupled overlapping place of external conductive object, reacted in complete image In corresponding value, that is, react and corresponded in outside conductive object in complete image in corresponding value.Therefore according to external conductive pair As corresponding to corresponding value in complete image and two-dimensionses coordinate, the centroid position (two-dimensionses of external conductive object can be calculated Coordinate).
According to the example of the present invention, in single electrode drive pattern, each electrode (driving electrodes and detecting electrode) phase The dimension position answered is the position in electrode center.According to another example of the present invention, in bipolar electrode drive pattern, every a pair Electrode (driving electrodes and detecting electrode) corresponding dimension position is position central between two electrodes.
In interior epitome picture, first dimension sensitive information corresponding to first pair of driving electrodes middle position, i.e., the First central dimension position between one and Article 2 driving electrodes (first pair of driving electrodes).If merely calculating Centroid position, then can only calculate the position that first pair of driving electrodes is central and last is to driving electrodes between central, according to interior The scope for the position that epitome picture is calculated lack first pair of driving electrodes middle position (first central dimension position) with Scope between first driving electrodes middle position and last in driving electrodes middle position and the last item driving electrodes Entreat the scope between position.
Relative to image is inside contracted, extend out in image, the first side is respectively corresponding to first with the second side dimension sensitive information The position in bar and the last item driving electrodes center, therefore according to extending out the scope ratio for the position that image is calculated according to interior epitome As the scope of position calculated adds first pair of driving electrodes middle position (first central dimension position) and the Scope between one driving electrodes middle position and last to driving electrodes middle position and the last item driving electrodes center Scope between position.In other words, include what is calculated according to complete image according to the scope for extending out the position that image is calculated The scope of position.
Similarly, foregoing bipolar electrode drive pattern can more expand as multi-electrode drive pattern, that is, drive simultaneously A plurality of driving electrodes.In other words, drive signal is while being supplied to a plurality of (all) driving electrodes in one group of driving electrodes, example Driving electrodes quantity such as one group of driving electrodes has two, three or four.Described multi-electrode drive pattern includes foregoing Bipolar electrode drive pattern, not including foregoing single electrode drive pattern.
Referring to Fig. 8, being a kind of method for detecting of detecting capacitance type touch-screen according to the present invention.As shown in step 810, The capacitive touch screen with a plurality of driving electrodes sequentially arranged in parallel with a plurality of detecting electrode is provided, wherein the driving electricity Pole is with the detecting electrode crossover in multiple overlapping places.Example driving electrodes 151 as the aforementioned and detecting electrode 152.Next, such as Shown in step 820, respectively single electrode drive pattern and multi-electrode drive pattern provide drive signal to the driving electrodes it One of one and the driving electrodes group driving electrodes.It is, the drive signal is only to provide every time in monopole drive pattern To one of described driving electrodes, and in multi-electrode drive pattern, the drive signal is every time while being provided the driving electricity One group of driving electrodes of pole, wherein in addition to last N bars driving electrodes, each driving electrodes with rear two adjacent driving electrodes Composition powered one group of driving electrodes, and N subtracts one for the driving electrodes quantity of one group of driving electrodes simultaneously.Drive signal Offer can be provided by foregoing drive circuit 41.Next, as shown in step 830, in each drive signal quilt During offer, dimension sensitive information is obtained by the detecting electrode, driven with obtaining multiple multi-electrodes in multi-electrode drive pattern Dimension sensitive information and being sensed in the dimension that single electrode drive pattern obtains the first side and the second side single electrode driving believe Breath.For example, in multi-electrode drive pattern, obtaining multi-electrode driving respectively when each group of driving electrodes are provided drive signal Dimension sensitive information.In another example, in single electrode drive pattern, in first driving electrodes and the last item driving electrodes The dimension sensitive information and the second side single electrode of the first side single electrode driving drive one is obtained when drive signal is provided respectively Dimension sensitive information.The acquirement of dimension sensitive information can be obtained by above-mentioned circuit for detecting 42.Described dimension sense Measurement information includes dimension sensitive information (inside contracting image) and the first side and the second side single electrode driving that the multi-electrode drives Dimension sensitive information.Next, as illustrated in step 840, dimension sensing sequentially according to the first side single electrode driving The dimension sensitive information of information, the dimension sensitive information of all multi-electrode drivings and the second side single electrode driving produces shadow As (extending out image).Step 840 can be completed by aforementioned control circuit.
As it was earlier mentioned, in single electrode drive pattern the current potential of drive signal with multi-electrode drive pattern drive signal Current potential be not necessarily intended to identical, can be identical or difference.Such as single electrode driving is with the first larger alternating current Position drives, the second ac potential driven relative to multi-electrode, and the ratio of the first ac potential and second ac potential is one Preset ratio.In addition, step 840 is to be according to the first side and all values of the dimension sensitive information of the second side single electrode driving An identical or different pre-set ratio is multiplied by respectively to produce the image.In addition, in single electrode drive pattern drive signal Frequency it is different from the frequency of the drive signal in multi-electrode drive pattern.
The driving electrodes quantity of one group of driving electrodes can have two, three, and even more many, the present invention is not limited System.In the better model of the present invention, the driving electrodes quantity of one group of driving electrodes is two.In the driving of one group of driving electrodes When number of electrodes is two, each driving electrodes are respectively corresponding to the first latitude coordinates, many (double) electrode drives of each of which Dimension sensitive information is respectively corresponding to central first dimension coordinate between a pair of driving electrodes of the driving electrodes, and And first the dimension sensitive information of side and the second side single electrode driving be respectively corresponding to first and the last item driving electrodes First dimension coordinate.
Similarly, when the driving electrodes quantity of one group of driving electrodes is a plurality of (more than two), each driving electrodes difference Corresponding to the first latitude coordinates, the dimension sensitive information of each of which multi-electrode driving is respectively corresponding to the driving electrodes First dimension coordinate central between two driving electrodes of lie farthest away in one group of driving electrodes, and the first side and second The dimension sensitive information of side single electrode driving is respectively corresponding to first dimension of first and the last item driving electrodes Coordinate.
In addition, each detecting electrode is respectively corresponding to second dimension coordinate, and each dimension sensitive information Each value be respectively corresponding to second dimension coordinate of detecting one of the electrode.
Fig. 9 A and Fig. 9 B are referred to, the signal of capacitive couplings signal is received via driving conductive bar for detecting conductive bar Figure.Because signal passes through some load circuits, such as pass through capacitive couplings, signal and be supplied to driving that detecting conductive bar is received Signal before conductive bar can produce phase difference.For example, when drive signal is supplied to first driving conductive bar, first detecting is led The signal that electric bar is received is poor with being supplied to the signal before driving conductive bar to produce first phaseAs shown in Figure 9 A, and drive When signal is supplied to Article 2 driving conductive bar, signal and be supplied to the letter before driving conductive bar that first detecting conductive bar is received It is poor number to produce second phaseAs shown in Figure 9 B.
First phase is poorIt is poor with second phaseResistor capacitor circuit (the RC that can pass through with drive signal Circuit) different and difference.When the cycle of drive signal is all identical, different phase differences represents that signal delay is different Time be received, if ignoring the foregoing direct measurement signal of phase difference, the beginning phase of measuring signal can be caused different and Produce Different Results.For example, it is assumed that when phase difference is 0, and signal is string ripple, and amplitude is A.When phase be 30 degree, 90 When degree, 150 degree, 210 degree, 270 degree and 330 degree of measurement signals, can respectively obtain | 1/2A |, | A |, | 1/2A |, | -1/2A |, |-A | with | -1/2A | signal.But when phase difference is 150 degree, the phase for starting to measure causes a deviation, so that becoming in phase During for 180 degree, 240 degree, 300 degree, 360 degree, 420 degree with 480 degree of measurement signals, 0 can be respectively obtained,0、WithSignal.
In previous example, it can be seen that the delay of the initial phase of the measurement caused by Such phase differences, letter can be caused Number result measured is entirely different, and no matter drive signal is string ripple or square wave (such as PWM), all can be with the presence of similar difference.
In addition, when drive signal is provided every time, adjacent a plurality of driving conductive bar can be available to, wherein driving is led Electric bar is sequentially arranged in parallel.It is available to two adjacent driving conductive bars in the preferable example invented, therefore one In secondary scanning, n bars driving conductive bar is provided n-1 drive signal altogether, and one group of driving conductive bar is supplied to every time, for example, the Once it is supplied to first to drive conductive bar with Article 2, is supplied to Article 2 to drive conductive bar with Article 3 for the second time, according to this Analogize.As it was earlier mentioned, drive signal when being provided every time, one group of driving conductive bar being provided can be one, two or More a plurality of, the present invention is not intended to limit the quantity for the driving conductive bar that each drive signal is provided.When each drive signal is provided, The signal that all detecting conductive bars are measured can assemble all dimensions in a dimension sensitive information, set single pass Sensitive information may make up a two-dimensionses sensitive information, can be considered image.
Accordingly, it is to use different phase differences for different conductive bars in the first embodiment of optimal mode of the present invention To postpone detection signal.For example, multiple phase differences are first determined, respectively when each group of driving conductive bar is provided drive signal, Carry out measurement signal according to each phase difference, the phase difference of the maximum institute foundation is that most convergence is supplied to drive in the signal measured Signal before moving conductive bar and detecting conductive bar receive after signal between phase difference, most convergence phase is referred to as in the following description Difference.The measurement of signal can select one of described detecting conductive bar to be measured according to each phase difference, or select many Bar all detects conductive bar to be measured according to each aberration, according to a plurality of or all detecting conductive bars signal summations To judge most convergence phase difference.According to above-mentioned, it can be determined that go out the most convergence phase difference of each group of conductive bar, in other words, When each group of conductive bar is provided drive signal, all detecting conductive bar delays are provided after the most convergence phase difference of drive signal Just measured.
Can be in (multiple) phase difference in addition it is also possible to be that need not carry out measurement signal according to all aberrations Sequentially carry out measurement signal according to a phase difference, stop when successively decreasing after the signal for finding to measure is incremented by, arrived wherein measuring Signal in the phase difference of the maximum institute foundation be most convergence phase difference.In this way, the larger image of signal can be obtained.
Alternatively, it is also possible to be first to select drive conductive bar one group as benchmark conductive bar, other conductive bars are referred to as Non-referenced conductive bar, first detects the most convergence phase difference of benchmark conductive bar, as flat accurate (level) phase difference, then detects non-base Quasi- driving conductive bar most convergence puts down the phase difference of quasi- phase difference, is referred to as most flat quasi- phase difference.For example, with benchmark conductive bar The signal that flat quasi- phase difference is measured is as flat calibration signal, and each phase difference for driving conductive bar to each group of non-referenced respectively enters The measurement of row signal, phase difference using in the signal measured closest to flat calibration signal person institute foundation is as being provided drive signal Driving conductive bar flat quasi- phase difference.In this way, the flat quasi- phase difference of each group of driving conductive bar is can determine whether out, according to each group Drive the flat quasi- phase difference of conductive bar come the measurement of signal after postponing, can obtain and relatively put down accurate image, i.e., between the signal in image Difference very little.In addition, flat calibration signal can fall within default working range, not necessarily needing to be most preferably can peak signal.
It is to use same phase poor with all detecting conductive bars when each drive signal is provided in preceding description, this Technical field has the technical staff of usual knowledge it can be deduced that can also be each group when each drive signal is provided Detecting conductive bar, which is used, is respectively adopted respective most convergence phase difference or flat quasi- phase difference.In other words, it is in each drive signal When being provided, the measurement of signal is carried out to each phase difference of each group of detecting conductive bar respectively, to judge most convergence phase Difference puts down quasi- phase difference.
In fact, in addition to the image using aberration come delayed measurement to obtain larger or relatively flat standard or with not Enlargement ratio together, impedance, measurement time, which obtain, relatively puts down accurate image.
Accordingly, the present invention proposes the measuring signal method of touch-screen, as shown in Figure 10.There is provided touch as shown in step 1010 Screen is touched, touch-screen includes a plurality of the leading of a plurality of driving conductive bar arranged in parallel and a plurality of detecting conductive bar composition arranged in parallel Electric bar, described driving conductive bar overlaps on multiple crossover regions with described detecting conductive bar.In addition, as shown in step 1020, Determine the delay phase difference of each or each group driving conductive bar.Afterwards, as shown in step 1030, it is sequentially provided drive signal One or one group into described driving conductive bar, it is provided the driving conductive bar and described detecting conductive bar of drive signal Produce mutual capacitive couplings.Next, as shown in step 1040, when each drive signal is provided, being provided drive signal The signal of each detecting combination be just to be measured after the corresponding phase difference of delay.
Accordingly, in the measuring signal device of inventive touch screen, foregoing step 1030 can be by foregoing driving Circuit 41 is implemented.In addition, step 1040 can be implemented by foregoing circuit for detecting 42.
In the example of the present invention, the delay phase difference of each or each group driving conductive bar is by multiple predetermined phases Selected in difference, such as select foregoing most convergence phase difference.Each group of conductive bar is referred in a plurality of driving while being provided drive One group of a plurality of conductive bar of dynamic signal, for example, implemented by the driving selection circuit 141 of foregoing drive circuit 41.For example, according to Sequence selects one of described driving conductive bar or one group of conductive bar as conductive bar is selected, such as by drive circuit 41 is reality Apply.Next, picking out the delay phase difference for being selected conductive bar in multiple predetermined phases difference.Wherein, in drive signal quilt Be supplied to when being selected conductive bar, the signal measured after the described delay phase difference of delay be more than postpone other predetermined phases it is poor after The signal detected.For example, being to be implemented by foregoing circuit for detecting 42, the delay phase difference detected can be stored in storage Circuit 43.
In addition or foregoing flat quasi- phase difference is selected.For example, selecting one or one group of described driving conductive bar Conductive bar is as benchmark conductive bar, and other or other groups of conductive bars are as non-referenced conductive bar, such as by drive circuit 41 is real Apply.Afterwards, the delay phase difference of benchmark conductive bar is picked out in multiple predetermined phases difference, wherein being provided in drive signal During benchmark conductive bar, the signal detected after the described delay phase difference of delay, which is more than, postpones what is detected after other predetermined phase differences Signal.Wherein, the delay phase difference of benchmark conductive bar is foregoing flat quasi- phase difference.Next, postponing institute with benchmark conductive bar The signal detected after the delay phase difference stated is as reference signal, then sequentially selects one or one of described non-referenced conductive bar Group non-referenced conductive bar picks out the delay for being selected conductive bar as being selected conductive bar in multiple predetermined phases difference Phase difference, most flat quasi- phase difference as the aforementioned, wherein when drive signal is provided to and is selected conductive bar, delay is described to prolong The signal detected after slow phase difference is compared to the signal for postponing to detect after other predetermined phases are poor closest to reference signal.With On, can be implemented by circuit for detecting 42.
In the example of the present invention, when drive signal is provided to benchmark conductive bar or the conductive bar being selected, by described Detecting conductive bar in the signal of a plurality of measurement be the signal measured by one of described detecting conductive bar.In other words, be according to Detect the signal of conductive bar to pick out delay phase difference according to phase same.In another example of the present invention, drive signal quilt When being supplied to benchmark conductive bar or the conductive bar being selected, the signal by a plurality of measurement in described detecting conductive bar is by institute The summation for the signal that at least two detecting conductive bars of the detecting conductive bar stated are measured.In other words, it is to detect according to identical is a plurality of The summation for surveying the signal of conductive bar or the detecting conductive bar of whole picks out delay phase difference.
Overlapped as it was earlier mentioned, can be each or each group on driving conductive bar with each detecting conductive bar Crossover region has corresponding delay phase difference.In the following description, it is with each or each group of driving conductive bar and hands over respectively Fold each or each group of detecting conductive bar is used as detecting to combine.In other words, drive signal can be and meanwhile be supplied to one or A plurality of driving conductive bar, and signal can also be measured by one or more detecting conductive bar.When producing signal through measuring, drive The one or more driving conductive bar that dynamic signal is provided is referred to as detecting with one or more detecting conductive bar being measured and combined. For example in wall scroll driving or a plurality of driving, with a conductive bar measurement signal value, or with two conductive bars measurement differences, and or It is to measure a pair of difference with three conductive bars.Wherein difference is the difference of the signal of two adjacent conductive bars, and double difference value is In three adjacent conductive bars, the difference of the signal of preceding two conductive bars subtracts each other the difference that the difference of the signal of rear two conductive bars is produced.
Accordingly, it is a kind of measuring signal method of touch-screen, as shown in figure 11 in another example of the present invention.As walked There is provided touch-screen shown in rapid 1110, touch-screen includes a plurality of driving conductive bar arranged in parallel and a plurality of detecting arranged in parallel The a plurality of conductive bar of conductive bar composition, described driving conductive bar overlaps on multiple crossover regions with described detecting conductive bar.This Outside, as seen at step 1120, each is overlapped with each or each group of driving conductive bar and respectively or each group of detecting is conductive Bar is combined as detecting, and as shown in step 1130, determines the delay phase difference of each detecting combination.Afterwards, such as step Shown in 1140, one or one group of drive signal into described driving conductive bar is sequentially provided, detecing for drive signal is provided Survey the driving conductive bar that drive signal is provided in combination and overlapping detecting conductive bar produces mutual capacitive couplings.Next, As indicated in step 1150, when each drive signal is provided, the signal for being provided each detecting combination of drive signal is to prolong Just it is measured after slow corresponding phase difference.
Accordingly, the present invention a kind of measuring signal device in, step 1140 can be by foregoing drive circuit 41 Implement, and step 1150 can be implemented by foregoing circuit for detecting 42.
In example of the present invention, step 1130 can be included：One of described detecting combination is sequentially selected as being chosen Choosing detecting combination, can be implemented by foregoing drive circuit 41；And pick out and be selected in multiple predetermined phases difference The delay phase difference of combination is detected, wherein when drive signal is provided to and is selected detecting combination, the described delay phase of delay The signal measured after potential difference is more than the signal for postponing to be detected after other predetermined phase differences, can be by foregoing circuit for detecting 42 To implement.
In another example of the present invention, determine that the delay phase difference of each detecting combination can also be real as described below Apply.One of described detecting combination is selected as benchmark and detects combination, other detecting combinations are detected as non-referenced combines, and One of described non-referenced detecting combination is sequentially selected as detecting combination is selected, can be by foregoing drive circuit 41 is real Apply.In addition, the delay phase difference of benchmark detecting combination is picked out in multiple predetermined phases difference, wherein being provided in drive signal When detecting combination to benchmark, the signal detected after the described delay phase difference of delay, which is more than, to postpone to detect after other predetermined phases are poor The signal arrived, and the signal detected using after the delay phase difference described in benchmark detecting combinatorial delays is used as reference signal.In addition, The delay phase difference for being selected detecting combination is picked out in multiple predetermined phases difference, is chosen wherein being provided in drive signal When selecting detecting combination, detected after the signal detected after the described delay phase difference of delay is poor compared to the other predetermined phases of delay Signal closest to reference signal.More than, can be implemented by foregoing circuit for detecting 42.
In the second embodiment of the present invention, signal is measured by control circuit, and the signal of each group of detecting conductive bar is Measured again respectively through after variable resistor, control circuit is the resistance that variable resistor is determined according to each group of driving conductive bar It is anti-.For example, first selecting drive conductive bar one group as benchmark conductive bar, other conductive bars are referred to as non-referenced conductive bar. Multiple default impedances are set first, and detect one when benchmark conductive bar (being probably one or more) is provided drive signal Bar detects the signal of conductive bar, or detecting is a plurality of or all detects the totalling of the signal of conductive bar, is used as flat calibration signal.In addition, Flat calibration signal can fall within default working range, not necessarily need to be optimal or peak signal.In other words, it is any to make flat standard The default impedance that signal falls within default working range can serve as the flat quasi- impedance of benchmark conductive bar.Next it is non-at each group When benchmark conductive bar is provided drive signal value, respectively according to each default impedance adjustment variable resistor, and this is detected The signal of conductive bar is detected, or detects the totalling of a plurality of or all detecting conductive bars the signal, to compare closest to flat standard The default impedance of signal, is used as the flat quasi- impedance relative to this group of non-referenced conductive bar for being provided drive signal.In this way, can sentence Break and the flat quasi- impedance of each group of driving conductive bar, variable resistor is adjusted according to the flat quasi- impedance of each group of driving conductive bar Impedance (adjustment variable resistor to flat quasi- impedance), can obtain and relatively put down accurate image, i.e. difference very little between signal in image.
It is to put down quasi- impedance using identical with all detecting conductive bars when each drive signal is provided in preceding description, The art there is the technical staff of usual knowledge it can be deduced that can also be when each drive signal is provided, it is each Group detecting conductive bar, which is used, is respectively adopted respective flat quasi- impedance.In other words, be when each drive signal is provided, it is right respectively Each default impedance of each group of detecting conductive bar carries out the measurement of signal, is hindered with the prediction for judging the flat calibration signal of most convergence It is anti-, obtain the flat quasi- impedance that each group of driving conductive bar is provided each detecting conductive bar during drive signal respectively accordingly, with The impedance of the variable resistor of adjustment each detecting conductive bar of electrical couplings respectively.
Foregoing control circuit is constituted in addition to it can be made up of electronic component or by one or many IC. In the example of the present invention, variable resistor can be built into IC, can be by may be programmed program (firmware in such as IC, firmware) To control the impedance of variable resistor.Such as variable resistor is made up of multiple resistance, and by multiple switch control, by different What is switched opens and closes (on and off) to adjust the impedance of variable resistor, the skill for known in due to variable resistor and programmable program Art, is no longer described herein.Variable resistor in IC by it is programmable it is program control can via a piece of wood serving as a brake to halt a carriage body amendment in the way of be applied to different spies The contact panel of property, can be effectively reduced cost, reach the purpose of commercial production.
In the third embodiment of the present invention, signal is measured by control circuit, and the signal of each group of detecting conductive bar is Measured respectively through measurement circuit (such as integrator), control circuit is to determine to measure electricity according to each group of driving conductive bar The enlargement ratio on road.For example, first selecting drive conductive bar one group as benchmark conductive bar, other conductive bars are referred to as non-base Quasi- conductive bar.Multiple default enlargement ratios are set first, and are provided drive in benchmark conductive bar (being probably one or more) The signal of a detecting conductive bar is detected during dynamic signal, or detecting is a plurality of or all detects the totalling of the signal of conductive bar, as Flat calibration signal.In addition, flat calibration signal can fall within default working range, optimal or peak signal is not necessarily needed to be.Change speech It, the flat standard that any default enlargement ratio for making flat calibration signal fall within default working range can serve as benchmark conductive bar is put Big multiplying power.Next when each group of non-referenced conductive bar is provided drive signal value, respectively according to each default times magnification Rate adjusts measurement circuit, and detects the signal of this detecting conductive bar, or detects a plurality of or all detecting conductive bars the letter Number totalling, to compare the default enlargement ratio closest to flat calibration signal, as relative to the group for being provided drive signal The flat quasi- enlargement ratio of non-referenced conductive bar.In this way, the flat quasi- enlargement ratio of each group of driving conductive bar is can determine whether out, according to every The flat quasi- enlargement ratio of one group of driving conductive bar adjusts the enlargement ratio of measurement circuit, can obtain and relatively puts down accurate image, i.e. shadow The difference very little between signal as in.
It is using identical flat quasi- amplification with all detecting conductive bars when each drive signal is provided in preceding description Multiplying power, the art there is the technical staff of usual knowledge it can be deduced that can also be when each drive signal is provided, Each group of detecting conductive bar, which is used, is respectively adopted respective flat quasi- enlargement ratio.In other words, it is to be provided in each drive signal When, the measurement of signal is carried out to each default enlargement ratio of each group of detecting conductive bar respectively, to judge the flat standard of most convergence The scale-up multiplying power of signal, obtains each group of driving conductive bar and is provided each detecting conduction during drive signal respectively accordingly The flat quasi- enlargement ratio of bar.
In the fourth embodiment of the present invention, signal is measured by control circuit, and the signal of each group of detecting conductive bar is Measured respectively through measurement circuit (such as integrator), control circuit is to determine to measure electricity according to each group of driving conductive bar The measurement time on road.For example, first selecting drive conductive bar one group as benchmark conductive bar, other conductive bars are referred to as non-base Quasi- conductive bar.Multiple default measurement times are set first, and are provided drive in benchmark conductive bar (being probably one or more) The signal of a detecting conductive bar is detected during dynamic signal, or detecting is a plurality of or all detects the totalling of the signal of conductive bar, as Flat calibration signal.In addition, flat calibration signal can fall within default working range, optimal or peak signal is not necessarily needed to be.Change speech It, any default measurement time for making flat calibration signal fall within default working range can serve as the flat quasi- amount of benchmark conductive bar The survey time.Next when each group of non-referenced conductive bar is provided drive signal value, when respectively according to each default measurement Between adjust measurement circuit, and detect the signal of this detecting conductive bar, or detect a plurality of or all detecting conductive bars the letters Number totalling, to compare the default measurement time closest to flat calibration signal, as relative to the group for being provided drive signal The flat quasi- measurement time of non-referenced conductive bar.In this way, the flat quasi- measurement time of each group of driving conductive bar is can determine whether out, according to every The flat quasi- measurement time of one group of driving conductive bar adjusts the measurement time of measurement circuit, can obtain and relatively puts down accurate image, i.e. shadow The difference very little between signal as in.
It is using identical flat quasi- measurement with all detecting conductive bars when each drive signal is provided in preceding description Time, the art there is the technical staff of usual knowledge it can be deduced that can also be when each drive signal is provided, Each group of detecting conductive bar, which is used, is respectively adopted the respective flat quasi- measurement time.In other words, it is to be provided in each drive signal When, the measurement of signal is carried out to each default measurement time of each group of detecting conductive bar respectively, to judge the flat standard of most convergence The prediction of signal measures the time, obtains each group of driving conductive bar respectively accordingly and is provided each detecting conduction during drive signal The flat quasi- measurement time of bar.
In the foregoing, one can be selected by first embodiment, second embodiment, 3rd embodiment and fourth embodiment Plant or select a variety of mixing to implement, the present invention is not any limitation as.In addition, can select away from amount when measuring flat calibration signal One or more farthest detecting conductive bar of slowdown monitoring circuit carries out the detecting of signal, to produce flat calibration signal.For example, it may be with The signal of a farthest detecting conductive bar produces to produce flat calibration signal, or the differential wave of farthest two detecting conductive bars In life calibration signal (difference) or farthest three detecting conductive bars first two with the differential letters of rear two detecting conductive bars Number difference produce flat calibration signal (double difference value).In other words, flat calibration signal can be signal value, difference or double difference value, can also It is the value that the signal of the other detecting of foundation one or more conductive bars is produced.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present invention Any simple modification, equivalent variations and the modification made to above example, in the range of still falling within technical solution of the present invention.

Claims (10)

1. a kind of touch processor, it is characterised in that including：
The delay phase difference of each or each group driving conductive bar is determined, wherein touch-screen includes a plurality of driving arranged in parallel The a plurality of conductive bar that conductive bar is constituted with a plurality of detecting conductive bar arranged in parallel, described driving conductive bar and described detecting Conductive bar overlaps on multiple crossover regions；
One or one group of drive signal into described driving conductive bar is sequentially provided, the driving for being provided drive signal is conductive Bar produces mutual capacitive couplings with described detecting conductive bar；And
When each drive signal is provided, delay is prolonged corresponding to one or one group driving conductive bar for being provided drive signal Just by least one detecting conductive bar measurement signal of described detecting conductive bar after slow phase difference.
2. touch processor as claimed in claim 1, it is characterised in that determine prolonging for each or each group driving conductive bar Slow phase difference includes：
One of described driving conductive bar or one group of conductive bar are sequentially selected as being selected conductive bar；And
Picked out in multiple predetermined phases difference and be selected the delay phase difference of conductive bar, wherein drive signal be provided to by When selecting conductive bar, the signal measured after the described delay phase difference of delay, which is more than, postpones what is detected after other predetermined phase differences Signal.
3. touch processor as claimed in claim 2, it is characterised in that when drive signal is provided to the conductive bar being selected, Signal by a plurality of measurement in described detecting conductive bar is the summation of the signal measured by one of described detecting conductive bar.
4. touch processor as claimed in claim 2, it is characterised in that when drive signal is provided to the conductive bar being selected, Signal by a plurality of measurement in described detecting conductive bar is by least two detecting conductive bars of described detecting conductive bar The summation of the signal of measurement.
5. touch processor as claimed in claim 1, it is characterised in that determine prolonging for each or each group driving conductive bar Slow phase difference includes：
One of described driving conductive bar or one group of conductive bar are selected as benchmark conductive bar, other or other groups of conductive bars It is used as non-referenced conductive bar；
The delay phase difference of benchmark conductive bar is picked out in multiple predetermined phases difference, wherein being provided to benchmark in drive signal During conductive bar, the signal detected after the described delay phase difference of delay is more than the letter for postponing to be detected after other predetermined phase differences Number；
The signal for postponing to detect after described delay phase difference using benchmark conductive bar is used as reference signal；
One of described non-referenced conductive bar or one group of non-referenced conductive bar are sequentially selected as being selected conductive bar；And
Picked out in multiple predetermined phases difference and be selected the delay phase difference of conductive bar, wherein drive signal be provided to by When selecting conductive bar, detected after the signal detected after the described delay phase difference of delay is poor compared to the other predetermined phases of delay Signal closest to reference signal.
6. touch processor as claimed in claim 5, it is characterised in that drive signal is provided to benchmark conductive bar or chosen During the conductive bar of choosing, the signal by a plurality of measurement in described detecting conductive bar is measured by one of described detecting conductive bar Signal.
7. touch processor as claimed in claim 5, it is characterised in that drive signal is provided to benchmark conductive bar or chosen During the conductive bar of choosing, the signal by a plurality of measurement in described detecting conductive bar is by least the two of described detecting conductive bar The summation for the signal that bar detecting conductive bar is measured.
8. a kind of touch processor, it is characterised in that including：
Using each or each group of driving conductive bar and overlap each respectively or each group of detecting conductive bar combined as detecting, Wherein touch-screen includes a plurality of the leading of a plurality of driving conductive bar arranged in parallel and a plurality of detecting conductive bar composition arranged in parallel Electric bar, described driving conductive bar overlaps on multiple crossover regions with described detecting conductive bar；
Determine the delay phase difference of each detecting combination；
One or one group of drive signal into described driving conductive bar is sequentially provided, the detecting combination of drive signal is provided In be provided the driving conductive bar of drive signal and overlapping detecting conductive bar produces mutual capacitive couplings；And
When each drive signal is provided, the signal for being provided each detecting combination of drive signal is the corresponding phase of delay Just it is measured after difference.
9. touch processor as claimed in claim 8, it is characterised in that determining the delay phase difference of each detecting combination includes：
One of detecting combination described in sequentially selecting, which is used as, is selected detecting combination；And
The delay phase difference for being selected detecting combination is picked out in multiple predetermined phases difference, wherein being provided in drive signal When being selected detecting combination, the signal measured after the described delay phase difference of delay, which is more than, postpones detecting after other predetermined phases differences The signal arrived.
10. touch processor as claimed in claim 8, it is characterised in that determine the delay phase difference bag of each detecting combination Include：
One of described detecting combination is selected as benchmark and detects combination, other detecting combinations are detected as non-referenced combines；
The delay phase difference of benchmark detecting combination is picked out in multiple predetermined phases difference, wherein being provided to base in drive signal During quasi- detecting combination, the signal detected after the described delay phase difference of delay, which is more than, postpones what is detected after other predetermined phase differences Signal；
The signal detected after delay phase difference described in combinatorial delays is detected using benchmark and is used as reference signal；
One of non-referenced detecting combination described in sequentially selecting is used as to be selected to detect and combined；And
The delay phase difference for being selected detecting combination is picked out in multiple predetermined phases difference, wherein being provided in drive signal When being selected detecting combination, detectd after the signal detected after the described delay phase difference of delay is poor compared to the other predetermined phases of delay The signal measured is closest to reference signal.
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