CN104020916B - Capacitive touch screen drive detection method and device and electronic device - Google Patents
Capacitive touch screen drive detection method and device and electronic device Download PDFInfo
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- CN104020916B CN104020916B CN201410267449.4A CN201410267449A CN104020916B CN 104020916 B CN104020916 B CN 104020916B CN 201410267449 A CN201410267449 A CN 201410267449A CN 104020916 B CN104020916 B CN 104020916B
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Abstract
The invention discloses a capacitive touch screen drive detection method and device and an electronic device. A capacitive touch screen comprises multiple drive wires, multiple induction wires, multiple drive electrodes electrically connected with the multiple drive wires, and multiple induction electrodes electrically connected with the multiple induction wires. The method comprises the steps of sending drive signals to all the drive wires in sequence at preset intervals, and driving the corresponding drive electrodes according to the drive signals; collecting a first induction signal on the corresponding induction electrode by means of the multiple induction wires before or after a drive signal is sent to each drive wire; collecting a second induction signal on the corresponding induction electrode by means of the multiple induction wires during drive signal application; conducting compensation on the second induction signal by means of the first induction signal to obtain a touch induction signal value; comparing the touch induction signal value with a preset threshold value and judging whether a touch point is touched according to a comparison result. According to the capacitive touch screen drive detection method and device and the electronic device, detection accuracy is improved, and the power consumption of the touch screen is reduced.
Description
Technical field
The present embodiments relate to capacitance touch screen technology, more particularly to a kind of capacitance touch screen driving detection method,
Device and electronic equipment.
Background technology
With the popularization of electronic product, touch-screen has obtained increasingly being widely applied, for example：Touch-screen is widely used in
In mobile phone, panel computer, MP3/MP4 etc..According to operation principle and the medium of detection touch information, touch-screen can be divided into resistance
The types such as formula, condenser type, infrared-type and surface acoustic wave, wherein, capacitance-type touch screen technology due to process is simple, life-span length,
The features such as light transmittance is high becomes current main flow touch screen technology.
Fig. 1 is the schematic diagram of the driving layer of capacitance touch screen in prior art, as shown in figure 1, driving layer to include a plurality of drive
Moving-wire (1a-1h) and the multiple driving electrodes 11 electrically connected with a plurality of drives line.Fig. 2 is the sense of capacitance touch screen in prior art
The schematic diagram of layer is answered, as shown in Fig. 2 inductive layer includes a plurality of line of induction (2a-2h) and multiple with what a plurality of line of induction was electrically connected
Induction electrode 21.The driving electrodes are mutually overlapped mutually with the induction electrode, form mutual capacitance.
In prior art, the driving detection process of capacitance touch screen is：Line by line the driving electrodes of drives line are driven,
All lines of induction gather signal simultaneously, and when being driven to a drives line, drives line and the line of induction are cross-linked
Side can form coupled capacitor, when there is finger to touch, have one part of current and flow into finger, signal and base that the line of induction is collected
Quasi- value is compared and can be changed, so that it is determined that touch point.But, touch-screen control integrated circuit (Integrated Circuit,
IC firmware) is only adjusted to certain amount of touch-screen, chooses suitable a reference value, and the touch-screen of batch is all with the firmware
Volume production is carried out, the correction of an a reference value is only carried out equivalent to batch touch-screen, touch-screen control IC is always maintained at the firmware not
Become.Because there is individual difference in the touch-screen of different modules, using identical touch-screen control IC firmware exist it is certain not
Accuracy, as the presence of ambient noise and the noise of liquid crystal display module has a certain impact to testing result, and always
It is being driven, is gathering signal, power consumption is big.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of driving detection method of capacitance touch screen, device and electronic equipment,
To improve accuracy, the impact of noise is reduced, reduce power consumption.
In a first aspect, embodiments providing a kind of driving detection method of capacitance touch screen, the capacitance touch
Screen includes a plurality of drives line, a plurality of line of induction and multiple driving electrodes for electrically connecting with a plurality of drives line and described many
Multiple induction electrodes of bar line of induction electrical connection, methods described include：
S1, with prefixed time interval successively to each bar drives line send drive signal, according to the drive signal drive phase
Each driving electrodes answered；
S2, before or after drive signal is sent to a drives line, feel using a plurality of line of induction collection is corresponding
Answer the first induced signal on electrode；
S3, during the drive signal is applied, gather the on corresponding induction electrode using a plurality of line of induction
Two induced signals；
S4, second induced signal is compensated using first induced signal and obtain touch sensible signal value；
S5, the touch sensible signal value and predetermined threshold value are compared, whether touch point is judged according to comparative result
Generation is touched.
Second aspect, the embodiment of the present invention additionally provide a kind of driving detection means of capacitance touch screen, the capacitive touch
Touching screen includes a plurality of drives line, a plurality of line of induction and multiple driving electrodes for electrically connecting with a plurality of drives line and described
Multiple induction electrodes of a plurality of line of induction electrical connection, described device include：
Drive module, for sending drive signal to each bar drives line successively with prefixed time interval, according to the driving
Signal drives corresponding each driving electrodes；
First acquisition module, before or after drive signal is sent to a drives line, is adopted using a plurality of line of induction
Collect the first induced signal on corresponding induction electrode；
Second acquisition module, it is for during the drive signal is applied, corresponding using a plurality of line of induction collection
The second induced signal on induction electrode；
Compensating module, obtains touching sense for compensating second induced signal using first induced signal
Induction signal value；
Judge module, for the touch sensible signal value and predetermined threshold value are compared, judges according to comparative result
Whether touch point occurs to touch.
The third aspect, the embodiment of the present invention additionally provide a kind of electronic equipment, and the electronic equipment includes capacitance touch screen,
Multiple driving electricity that the capacitance touch screen is included a plurality of drives line, a plurality of line of induction and electrically connected with a plurality of drives line
Multiple induction electrodes that pole is electrically connected with a plurality of line of induction, the electronic equipment are also carried including any embodiment of the present invention
For capacitance touch screen driving detection means.
The driving detection method of capacitance touch screen provided in an embodiment of the present invention, device and electronic equipment, by presetting
Time interval sends drive signal to each bar drives line, and is adopted by the line of induction before or after to a drives line sending signal
The impact of collection noise signal, is denoted as the first induced signal, is sending drive signal to drive the drives line to the drives line
On driving electrodes when, the second induced signal is gathered by the line of induction, and the second induced signal is carried out using the first induced signal
Compensation obtains touch sensible signal value, compares touch sensible signal value and predetermined threshold value, to determine whether touch point occurs to touch.
The embodiment of the present invention improves the accuracy of detection due to real-time detection noise signal to reduce the impact of noise signal；And
As the power consumption of touch-screen is mainly consumed in drives line, add between drive signal due to sending to two adjacent drives lines
Prefixed time interval, equivalent to the frequency for reducing drive signal, therefore reduces the power consumption of touch-screen.
Description of the drawings
Fig. 1 is the schematic diagram of the driving layer of capacitance touch screen in prior art；
Fig. 2 is the schematic diagram of the inductive layer of capacitance touch screen in prior art；
Fig. 3 is a kind of flow chart of the driving detection method of capacitance touch screen that first embodiment of the invention is provided；
Fig. 4 is the sectional view of double-deck capacitive touch screen in prior art；
Fig. 5 is the sectional view of the capacitive touch screen of individual layer bridge structure in prior art；
Fig. 6 is the sectional view of capacitive touch screen of the individual layer without bridge structure in prior art；
Fig. 7 is a kind of flow chart of the driving detection method of capacitance touch screen that second embodiment of the invention is provided；
Fig. 8 is a kind of flow chart of the driving detection method of capacitance touch screen that third embodiment of the invention is provided；
Fig. 9 is a kind of schematic diagram of the driving detection means of capacitance touch screen that fourth embodiment of the invention is provided；
Figure 10 is a kind of schematic diagram of the driving detection means of capacitance touch screen that fifth embodiment of the invention is provided；
Figure 11 is a kind of schematic diagram of the driving detection means of capacitance touch screen that sixth embodiment of the invention is provided；
Figure 12 is the schematic diagram of a kind of electronic equipment that seventh embodiment of the invention is provided.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than full content is illustrate only in description, accompanying drawing.
First embodiment
Fig. 3 be first embodiment of the invention provide a kind of capacitance touch screen driving detection method flow chart, the party
Drive of the method suitable for the capacitive touch screen (if double-decker, individual layer bridge structure or individual layer are without bridge structure) to various structures
Dynamic detection, can be performed by touch-screen control IC.Wherein, the capacitance touch screen include a plurality of drives line, a plurality of line of induction and
Multiple induction electrodes that the multiple driving electrodes electrically connected with a plurality of drives line are electrically connected with a plurality of line of induction.Fig. 4
It is the sectional view of double-deck capacitive touch screen in prior art, as shown in figure 1, double-deck capacitive touch screen bag
Include：Glass substrate 410, the drive layer 420, the insulation being arranged on the driving layer 420 being arranged on the glass substrate are situated between
Matter layer 430, the inductive layer 440 being arranged on the insulating medium layer 430 and the protective layer being arranged on the inductive layer 440
450.Wherein, layer 420 is driven to include a plurality of drives line, inductive layer 440 includes a plurality of line of induction.Fig. 5 is individual layer in prior art
The sectional view of the capacitive touch screen of bridge structure, as shown in figure 5, the capacitive touch screen of individual layer bridge structure includes：Glass
Substrate 510, arranges the line of induction 540 of continuous setting on the glass substrate and with the continuous line of induction 540 for the driving that is spaced
Line segment 520, drives, and drives line segment 520 electric by bridge 560
Connection, is arranged on and drives line segment 520 and the protective layer 550 on the line of induction 540.Fig. 6 be in prior art individual layer without bridge structure
Capacitive touch screen sectional view, as shown in fig. 6, capacitive touch screen of the individual layer without bridge structure includes：Glass substrate
610, drives line 620 on the glass substrate and the line of induction 640 are set, are arranged between drives line 620 and the line of induction 640 and are driven
Insulating barrier 630 on moving-wire 620 and the line of induction 640, and the protective layer 650 being arranged on insulating barrier 630, wherein, drives line and
The line of induction is located at same layer.
The driving detection method of the capacitance touch screen specifically includes following steps：
Step 310, sends drive signal to each bar drives line successively with prefixed time interval, drives according to the drive signal
Dynamic corresponding each driving electrodes.
Touch-screen controls IC and sends drive signal to a drives line, drives in the drives line according to the drive signal
Corresponding each driving electrodes, through prefixed time interval, a drives line sends drive signal still further below.Touch-screen controls IC
The time for reserving prefixed time interval between drive signal is sent in the drives line adjacent to two, during this period of time, by feeling
Line is answered to gather signal to reduce the impact of noise.As the power consumption of touch-screen is mainly consumed in drives line, to two adjacent drives
Moving-wire to send and add prefixed time interval between drive signal, equivalent to the frequency for reducing drive signal, therefore reduces
The power consumption of touch-screen.
Wherein, the prefixed time interval is relevant with the port number of touch-screen (i.e. the quantity of drives line), when port number is got over
When many, prefixed time interval is less.
Step 320 is before or after drive signal is sent to a drives line, corresponding using a plurality of line of induction collection
Induction electrode on the first induced signal.
In prefixed time interval in the prefixed time interval sent to a drives line before drive signal or afterwards,
I.e. when without drive signal is sent to drives line, touch-screen control IC gathers every line of induction phase using a plurality of line of induction
The first induced signal on the induction electrode answered.Wherein, first induced signal is noise signal, is caused by noise,
Wherein, noise includes ambient noise and the noise from liquid crystal display module.
For example：Touch-screen for 5.5 inches, its port number (i.e. the quantity of drives line) are 12, the scan frequency of a frame
Can drive for all drives lines in 0.01s, i.e. a frame for 100Hz, the i.e. scan period of a frame the time required to completing and be
0.01s, then the line of induction is 0.01/12s according to the time sum that drive signal gathers useful signal and acquisition noise signal, then feel
Line is answered to be respectively 0.01/24s according to the time that drive signal gathers useful signal and acquisition noise signal, i.e., described Preset Time
At intervals of 0.01/24s.In this step, in the 0.01/24s sent to drives line before drive signal or afterwards
In 0.01/24s, using the first induced signal on a plurality of line of induction collection induction electrode.
Step 330, during the drive signal is applied, is gathered on corresponding induction electrode using a plurality of line of induction
The second induced signal.
Touch-screen controls IC during a drives line thereto applies drive signal, is adopted using a plurality of line of induction
The second induced signal on the corresponding induction electrode of every line of induction of collection, to detect useful signal, for determining whether to touch
Occur.
Step 340, is compensated to second induced signal using first induced signal and obtains touch sensible letter
Number value.
It is pre- using in the prefixed time interval sent in drives line thereto before drive signal or afterwards
If the first induced signal collected in time interval, to applying the collect during drive signal second sense to the drives line
Induction signal is compensated, and obtains touch sensible signal value, using the touch sensible signal value as detect whether occur touch
Signal, to reduce the impact of noise.
Step 350, judges that the touch sensible signal value, whether more than predetermined threshold value, judges touch point according to comparative result
Whether generation is touched.
The touch sensible signal value obtained during drive signal is applied to a drives line and predetermined threshold value are compared
Compared with process compares, and when the touch sensible signal value is less than the predetermined threshold value, shows the drives line and obtains described touching
The intersection point i.e. touch point for touching the line of induction of induced signal value does not occur to touch, and touch-screen control IC continues with prefixed time interval
Start drive signal to be sent to each bar drives line successively from next drives line of the drives line, that is, continue executing with step 310
To step 350；When the touch sensible signal value is more than the predetermined threshold value, shows the drives line and obtain the touch
The touch point that the line of induction of induced signal value is represented there occurs touch, according to the drives line with obtain the touch sensible signal
The line of induction of value can determine the coordinate of touch point, and following touch-screen control IC continues to drive from this with prefixed time interval
Next drives line of line starts to send drive signal to each bar drives line successively, that is, continue executing with step 310 to step 350,
To determine next touch point.
But, in practical operation, not only carry out a frame scan and determine that touch point, generally require to carry out many frame scans, with
Exclude the phenomenon of mistaken touch.Obtained by the touch sensible signal value and predetermined threshold value are compared in step 350
When the touch sensible signal value is more than predetermined threshold value, it is believed that obtain drives line and the line of induction of the touch sensible signal value
Intersection point be likely to occur touch, in order to further determine whether really to there occurs touch, need to carry out multiframe (such as 3 frames)
Scanning, therefore can start from next drives line of the drives line or proceed by scanning from first drives line, i.e.,
Step 310 is repeated to step 350, the predetermined threshold value is all higher than to touch sensible signal value when this every time, then really
The fixed point there occurs touch, determine touch point position according to the drives line for obtaining the touch sensible signal value with the line of induction, i.e., really
Surely touch point coordinates.
The present embodiment is by sending drive signal with prefixed time interval to each bar drives line, and is sending out to a drives line
Send in the prefixed time interval before or after drive signal by line of induction acquisition noise signal, be denoted as the first induced signal,
Drive signal is sent to drive during the driving electrodes in the drives line to the drives line, by line of induction collection the second sensing letter
Number, and the second induced signal is compensated using the first induced signal and obtain touch sensible signal value, compare touch sensible letter
Number value and predetermined threshold value, with determine touch point whether occur touch.The present embodiment is made an uproar with reduction due to real-time detection noise signal
The impact of acoustical signal, improves the accuracy of detection；And as the power consumption of touch-screen is mainly consumed in drives line, due to two
The adjacent drives line of bar to send and add prefixed time interval between drive signal, equivalent to the frequency for reducing drive signal,
Therefore reduce the power consumption of touch-screen.
Second embodiment
Fig. 7 be second embodiment of the invention provide a kind of capacitance touch screen driving detection method flow chart, such as Fig. 7
It is shown, on the basis of first embodiment, this embodiment increases step 760.Specifically include following steps：
Step 710, sends drive signal to each bar drives line successively with prefixed time interval, drives according to the drive signal
Dynamic corresponding each driving electrodes.
Step 720 is before or after drive signal is sent to a drives line, corresponding using a plurality of line of induction collection
Induction electrode on the first induced signal.
Step 730, during the drive signal is applied, is gathered on corresponding induction electrode using a plurality of line of induction
The second induced signal.
Step 740, is compensated to second induced signal using first induced signal and obtains touch sensible letter
Number value.
Step 750, judges that the touch sensible signal value, whether more than predetermined threshold value, judges touch point according to comparative result
Whether generation is touched.
Step 760, when the touch sensible signal value is more than the predetermined threshold value, under adjacent with current drives line
One drives line starts continuously to send drive signal to each bar drives line successively with default frame number, if working as forerunner per frame to described
When moving-wire sends drive signal, the first induced signal described in the induced signal Jing collected on the line of induction compensates second for obtaining and touches
Touch induced signal value and be all higher than the predetermined threshold value, it is determined that have touch point, and determine touch point position.
Through the comparison of the touch sensible signal value and the predetermined threshold value, when the touch sensible signal value is more than institute
When stating predetermined threshold value, the drives line for obtaining the touch sensible signal value is current drives line, from adjacent with current drives line
Next drives line starts continuously to send drive signal (i.e. to adjacent driven line to each bar drives line successively with default frame number
No line of induction acquisition noise signal between drive signal is sent, and sends the time interval between drive signal to adjacent driven line
Also accordingly reduce than the prefixed time interval.For example：During drive signal is applied to first drives line, adopted by the line of induction
Collection induced signal, is sending drive signal to first drives line and is sending the time between drive signal to Article 2 drives line
Interval is corresponding to be reduced, no line of induction acquisition noise signal in this period, is applying the drive signal phase to Article 2 drives line
Between, induced signal is gathered by the line of induction.), during drive signal is applied to wherein one drives line, sensed by line of induction collection
Signal, if send drive signal per frame to the current drives line, the described in the induced signal Jing collected on the line of induction
One induced signal compensates the second touch sensible signal value for obtaining and is all higher than the predetermined threshold value, it is determined that have touch point to send out
It is raw, determined with the line of induction according to the current drives line for obtaining the touch sensible signal value or the second touch sensible signal value and touched
Point coordinates is touched, that is, determines touch point position；If send drive signal per frame to the current drives line, wherein have a frame or
First induced signal described in the induced signal Jing collected on a few frame lines of induction of person compensates the second touch sensible letter for obtaining
Number value is not more than the predetermined threshold value, it is determined that no touch point occurs.Preferably, the default frame number is 2.
The present embodiment is by sending drive signal with prefixed time interval to each bar drives line, and is sending out to a drives line
Send in the prefixed time interval before or after drive signal by line of induction acquisition noise signal, be denoted as the first induced signal,
Drive signal is sent to drive during the driving electrodes in the drives line to the drives line, by line of induction collection the second sensing letter
Number, and the second induced signal is compensated using the first induced signal and obtain touch sensible signal value, compare touch sensible letter
Number value and predetermined threshold value, when the touch sensible signal value is more than the predetermined threshold value, it is determined that may have occurred touch, for entering
One step determines whether occur to touch, and utilizes the type of drive without prefixed time interval, i.e., from next drive that current drives line is adjacent
Moving-wire starts continuously to send drive signal to each bar drives line successively with default frame number, and sends driving per frame to current drives line
During signal, the first induced signals of induced signal Jing that the line of induction is collected are compensated and obtain the second touch sensible signal value, than
Compared with the second touch sensible signal value and predetermined threshold value, if the second touch sensible signal value obtained per frame is all higher than default threshold
Value, it is determined that there occurs touchs, according to current drives line with obtain touch sensible signal value or the second touch sensible signal value
The line of induction determine touch point position.The embodiment of the present invention due to real-time detection noise signal, to reduce the impact of noise signal,
Improve the accuracy of detection；And as the power consumption of touch-screen is mainly consumed in drives line, due to two adjacent drivings
Line to send and add prefixed time interval between drive signal, equivalent to the frequency for reducing drive signal, therefore reduces tactile
Touch the power consumption of screen；And in order to exclude mistaken touch, drive signal is continuously sent to each bar drives line successively with default frame number, i.e., to phase
Adjacent drives line is no longer pass through prefixed time interval when sending drive signal, relative to first embodiment, realizes to touch point
It is quick to position.
3rd embodiment
Fig. 8 be third embodiment of the invention provide a kind of capacitance touch screen driving detection method flow chart, such as Fig. 8
It is shown, on the basis of first embodiment, this embodiment increases step 860.Specifically include following steps：
Step 810, sends drive signal to each bar drives line successively with prefixed time interval, drives according to the drive signal
Dynamic corresponding each driving electrodes.
Step 820 is before or after drive signal is sent to a drives line, corresponding using a plurality of line of induction collection
Induction electrode on the first induced signal.
Step 830, during the drive signal is applied, is gathered on corresponding induction electrode using a plurality of line of induction
The second induced signal.
Step 840, is compensated to second induced signal using first induced signal and obtains touch sensible letter
Number value.
Step 850, judges that the touch sensible signal value, whether more than predetermined threshold value, judges touch point according to comparative result
Whether generation is touched.
Step 860, when the touch sensible signal value is more than the predetermined threshold value, starts from first drives line with pre-
If frame number continuously sends drive signal to each bar drives line successively, if sending drive signal per frame to the current drives line
When, the second touch sensible signal value that the first induced signal compensation described in the induced signal Jing collected on the line of induction is obtained is big
In the predetermined threshold value, it is determined that have touch point, and determine touch point position.
Through the comparison of the touch sensible signal value and the predetermined threshold value, when the touch sensible signal value is more than institute
When stating predetermined threshold value, the drives line for obtaining the touch sensible signal value is current drives line, from first drives line start with
Default frame number is continuous successively to send no line of induction acquisition noise signal between drive signal to adjacent driven line, to which
During drives line applies drive signal, induced signal is gathered by the line of induction, if sent out to the current drives line per frame
When sending drive signal, the first induced signal described in the induced signal Jing collected on the line of induction compensates the second touch for obtaining
Induced signal value is all higher than the predetermined threshold value, it is determined that have touch point, according to obtain the touch sensible signal value or
The current drives line of person's the second touch sensible signal value determines touch point coordinates with the line of induction, that is, determine touch point position；If
When drive signal is sent per frame to the current drives line, wherein there is the induced signal collected on a frame or a few frame lines of induction
First induced signal described in Jing compensates the second touch sensible signal value for obtaining and is not more than the predetermined threshold value, it is determined that do not have
There is touch point.Preferably, the default frame number is 2.
The present embodiment is by sending drive signal with prefixed time interval to each bar drives line, and is sending out to a drives line
Send in the prefixed time interval before or after drive signal by line of induction acquisition noise signal, be denoted as the first induced signal,
Drive signal is sent to drive during the driving electrodes in the drives line to the drives line, by line of induction collection the second sensing letter
Number, and the second induced signal is compensated using the first induced signal and obtain touch sensible signal value, compare touch sensible letter
Number value and predetermined threshold value, when the touch sensible signal value is more than the predetermined threshold value, it is determined that may have occurred touch, for entering
One step determines whether occur to touch, and utilizes the type of drive without prefixed time interval, i.e., start to preset frame from the first drives line
Number continuously sends drive signal to each bar drives line successively, and when sending drive signal per frame to current drives line, the line of induction is adopted
The first induced signals of induced signal Jing for collecting are compensated and obtain the second touch sensible signal value, compare the second touch sensible letter
Number value and predetermined threshold value, if the second touch sensible signal value obtained per frame is all higher than predetermined threshold value, it is determined that there occurs tactile
Touch, touch point is determined according to current drives line and the line of induction for obtaining touch sensible signal value or the second touch sensible signal value
Position.The embodiment of the present invention improves the accurate of detection due to real-time detection noise signal to reduce the impact of noise signal
Property；And as the power consumption of touch-screen is mainly consumed in drives line, due to two adjacent drives lines send drive signal it
Between add prefixed time interval, equivalent to the frequency for reducing drive signal, therefore reduce the power consumption of touch-screen；And in order to
Mistaken touch is excluded, drive signal is continuously sent to each bar drives line successively with default frame number, i.e., is sent to adjacent driven line and is driven
Prefixed time interval is no longer pass through during signal, relative to first embodiment, realizes the quick positioning to touch point.
Fourth embodiment
Fig. 9 is a kind of schematic diagram of the driving detection means of capacitance touch screen that fourth embodiment of the invention is provided.This reality
The driving detection means for applying the capacitance touch screen of example offer is used for the driving inspection of the capacitance touch screen for realizing that first embodiment is provided
Survey method.Wherein, the capacitance touch screen is included a plurality of drives line, a plurality of line of induction and is electrically connected with a plurality of drives line
Multiple induction electrodes for electrically connecting with a plurality of line of induction of multiple driving electrodes.As shown in figure 9, described in the present embodiment
The driving detection means of capacitance touch screen includes：Drive module 910, the first acquisition module 920, the second acquisition module 930, compensation
Module 940 and judge module 950.
Wherein, drive module 910 is for sending drive signal to each bar drives line successively with prefixed time interval, according to institute
State drive signal and drive corresponding each driving electrodes；
First acquisition module 920 for a drives line send drive signal before or after, using a plurality of sense
Line is answered to gather the first induced signal on corresponding induction electrode；
Second acquisition module 930 is for during the drive signal is applied, corresponding using a plurality of line of induction collection
Induction electrode on the second induced signal；
Compensating module 940 is touched for being compensated to second induced signal using first induced signal
Induced signal value；
Judge module 950 is sentenced according to comparative result for the touch sensible signal value and predetermined threshold value are compared
Whether disconnected touch point occurs to touch.
Wherein, first induced signal is noise signal.
The present embodiment sends drive signal to each bar drives line by drive module 910 successively with prefixed time interval, according to
Corresponding each driving electrodes, the first acquisition module 920 are driven to send drive signal to a drives line according to the drive signal
Before or after prefixed time interval in, gather the first sensing letter on corresponding induction electrode using a plurality of line of induction
Number；Second acquisition module 930 gathers corresponding induction electrode using a plurality of line of induction during the drive signal is applied
On the second induced signal；Compensating module 940 is for being mended to second induced signal using first induced signal
Repay and obtain touch sensible signal value；Judge module 950 for the touch sensible signal value and predetermined threshold value are compared, root
Judge whether touch point occurs to touch according to comparative result.The present embodiment due to by the first acquisition module real-time detection noise signal,
To reduce the impact of noise signal, the accuracy of detection is improve；And as the power consumption of touch-screen is mainly consumed in drives line,
Prefixed time interval is added between drive signals, equivalent to reducing
The frequency of drive signal, therefore reduce the power consumption of touch-screen.
5th embodiment
Figure 10 is a kind of schematic diagram of the driving detection means of capacitance touch screen that fifth embodiment of the invention is provided.This reality
The driving detection means for applying the capacitance touch screen of example offer is used for the driving inspection of the capacitance touch screen for realizing that second embodiment is provided
Survey method.Wherein, the capacitance touch screen is included a plurality of drives line, a plurality of line of induction and is electrically connected with a plurality of drives line
Multiple induction electrodes for electrically connecting with a plurality of line of induction of multiple driving electrodes.As shown in Figure 10, the present embodiment is provided
The driving detection means of capacitance touch screen includes each module of the driving detection means of the capacitance touch screen that fourth embodiment is provided,
That is drive module 1010, the first acquisition module 1020, the second acquisition module 1030, compensating module 1040 and judge module 1050,
In addition, also include：
First determining module 1060, for when the touch sensible signal value be more than the predetermined threshold value when, from it is current
Next adjacent drives line of drives line starts continuously to send drive signal to each bar drives line successively with default frame number, if often
When frame is to the current drives line transmission drive signal, the first induced signal described in the induced signal Jing collected on the line of induction is mended
Repay the second touch sensible signal value for obtaining and be all higher than the predetermined threshold value, it is determined that have touch point, and determine touch point
Position.Preferably, the default frame number is 2.
The present embodiment in order to exclude mistaken touch, by the first determining module 1060 from next adjacent with current drives line
Drives line starts continuously to send drive signal to each bar drives line successively with default frame number, i.e., send to adjacent driven line and drive letter
Number when be no longer pass through prefixed time interval, relative to fourth embodiment, realize the quick positioning to touch point.
Sixth embodiment
Figure 11 is a kind of schematic diagram of the driving detection means of capacitance touch screen that sixth embodiment of the invention is provided.This reality
The driving detection means for applying the capacitance touch screen of example offer is used for the driving inspection of the capacitance touch screen for realizing that 3rd embodiment is provided
Survey method.Wherein, the capacitance touch screen is included a plurality of drives line, a plurality of line of induction and is electrically connected with a plurality of drives line
Multiple induction electrodes for electrically connecting with a plurality of line of induction of multiple driving electrodes.As shown in figure 11, the present embodiment is provided
The driving detection means of capacitance touch screen includes each module of the driving detection means of the capacitance touch screen that fourth embodiment is provided,
That is drive module 1110, the first acquisition module 1120, the second acquisition module 1130, compensating module 1140 and judge module 1150,
In addition, also include：
Second determining module 1160, for when the touch sensible signal value is more than the predetermined threshold value, from first
Drives line starts continuously to send drive signal to each bar drives line successively with default frame number, if per frame to the current drives line
When sending drive signal, the second touch sense that the first induced signal compensation described in the induced signal Jing collected on the line of induction is obtained
Induction signal value is all higher than the predetermined threshold value, it is determined that has touch point, and determines touch point position.Preferably, it is described pre-
If frame number is 2.
The present embodiment is started from a drives line to preset frame number by the second determining module 1160 to exclude mistaken touch
Continuously drive signal is sent to each bar drives line successively, i.e., be no longer pass through Preset Time when sending drive signal to adjacent driven line
Interval, relative to fourth embodiment, realizes the quick positioning to touch point.
7th embodiment
Figure 12 is the schematic diagram of a kind of electronic equipment that seventh embodiment of the invention is provided, as shown in figure 9, electronic equipment bag
Capacitance touch screen 1210 is included, capacitance touch screen 1210 is included a plurality of drives line, a plurality of line of induction and is electrically connected with a plurality of drives line
Multiple induction electrodes that the multiple driving electrodes for connecing are electrically connected with a plurality of line of induction, electronic equipment is also including capacitance touch screen
Detection means 1220 is driven, wherein, the driving detection means 1220 of capacitance touch screen includes：
Drive module 1221, for sending drive signal to each bar drives line successively with prefixed time interval, according to described
Drive signal drives corresponding each driving electrodes；
First acquisition module 1222, for before or after drive signal is sent to a drives line, using described a plurality of
The line of induction gathers the first induced signal on corresponding induction electrode；
Second acquisition module 1223, for, during the drive signal is applied, gathering phase using a plurality of line of induction
The second induced signal on the induction electrode answered；
Compensating module 1224, is touched for being compensated to second induced signal using first induced signal
Touch induced signal value；
Judge module 1225, for the touch sensible signal value and predetermined threshold value are compared, according to comparative result
Judge whether touch point occurs to touch.
Preferably, the driving detection means of capacitance touch screen also includes the first determining module or the second determining module.Its
In, the first determining module for when the touch sensible signal value is more than the predetermined threshold value, from adjacent with current drives line
Next drives line start continuously to send drive signal to each bar drives line successively with default frame number, if worked as to described per frame
When front drives line sends drive signal, the first induced signal compensation described in the induced signal Jing collected on the line of induction obtain the
Two touch sensible signal values are all higher than the predetermined threshold value, it is determined that have touch point, and determine touch point position；Second is true
Cover half block, for when the touch sensible signal value is more than the predetermined threshold value, starting to preset frame from first drives line
Number continuously sends drive signal to each bar drives line successively, if send drive signal per frame to the current drives line, sense
The second touch sensible signal value that the first induced signal compensation described in the induced signal Jing collected on line is obtained is answered to be all higher than institute
State predetermined threshold value, it is determined that have touch point, and determine touch point position.Preferably, the default frame number is 2.
Driving detection means reality of the electronic equipment with capacitance touch screen that the present embodiment is provided by capacitance touch screen
When the first induced signal of detected noise signal, to useful signal be the second induced signal compensate, reduce noise signal
Impact, improve the accuracy of detection, reduce the power consumption of touch-screen.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (11)
1. the driving detection method of a kind of capacitance touch screen, the capacitance touch screen include a plurality of drives line, a plurality of line of induction with
And multiple induction electrodes that the multiple driving electrodes electrically connected with a plurality of drives line are electrically connected with a plurality of line of induction,
Characterized in that, methods described includes：
S1, drive signal is sent to each bar drives line successively with prefixed time interval, driven according to the drive signal corresponding
Each driving electrodes；
Between S2, the Preset Time in the prefixed time interval sent to a drives line before drive signal or afterwards
Every interior, the first induced signal on corresponding induction electrode is gathered using a plurality of line of induction；
S3, during the drive signal is applied, gather the second sense on corresponding induction electrode using a plurality of line of induction
Induction signal；
S4, second induced signal is compensated using first induced signal and obtain touch sensible signal value；
S5, the touch sensible signal value and predetermined threshold value are compared, judge whether touch point occurs according to comparative result
Touch.
2. method according to claim 1, it is characterised in that also including step S6：
When the touch sensible signal value is more than the predetermined threshold value, open from the next drives line adjacent with current drives line
Begin continuously to send drive signal to each bar drives line successively with default frame number, if send to the current drives line per frame driven
During signal, the second touch sensible signal value that the first induced signal compensation described in the induced signal Jing collected on the line of induction is obtained
It is all higher than the predetermined threshold value, it is determined that have touch point, and determine touch point position.
3. method according to claim 1, it is characterised in that also including step S6：
When the touch sensible signal value is more than the predetermined threshold value, start to connect with default frame number successively from first drives line
Continue to each bar drives line and send drive signal, if drive signal is sent per frame to current drives line, collect on the line of induction
Induced signal Jing described in the first induced signal the second touch sensible signal value for obtaining of compensation be all higher than the predetermined threshold value, then
It is determined that there is touch point, and determine touch point position.
4. according to the method in claim 2 or 3, it is characterised in that the default frame number is 2.
5. the method according to any one of claim 1-3, it is characterised in that first induced signal is noise signal.
6. the driving detection means of a kind of capacitance touch screen, the capacitance touch screen include a plurality of drives line, a plurality of line of induction with
And multiple induction electrodes that the multiple driving electrodes electrically connected with a plurality of drives line are electrically connected with a plurality of line of induction,
Characterized in that, described device includes：
Drive module, for sending drive signal to each bar drives line successively with prefixed time interval, according to the drive signal
Drive corresponding each driving electrodes；
First acquisition module, in the prefixed time interval sent to a drives line before drive signal or afterwards
In the prefixed time interval, the first induced signal on corresponding induction electrode is gathered using a plurality of line of induction；
Second acquisition module, for, during the drive signal is applied, sensing using a plurality of line of induction collection is corresponding
The second induced signal on electrode；
Compensating module, obtains touch sensible letter for compensating to second induced signal using first induced signal
Number value；
Judge module, for the touch sensible signal value and predetermined threshold value are compared, judges to touch according to comparative result
Whether point occurs to touch.
7. device according to claim 6, it is characterised in that also include：
First determining module, for when the touch sensible signal value be more than the predetermined threshold value when, from current drives line phase
Next adjacent drives line starts continuously to send drive signal to each bar drives line successively with default frame number, if per frame to described
When current drives line sends drive signal, the first induced signal compensation described in the induced signal Jing collected on the line of induction is obtained
Second touch sensible signal value is all higher than the predetermined threshold value, it is determined that has touch point, and determines touch point position.
8. device according to claim 6, it is characterised in that also include：
Second determining module, for when the touch sensible signal value is more than the predetermined threshold value, opening from first drives line
Begin continuously to send drive signal to each bar drives line successively with default frame number, if sending drive signal per frame to current drives line
When, the second touch sensible signal value that the first induced signal compensation described in the induced signal Jing collected on the line of induction is obtained is big
In the predetermined threshold value, it is determined that have touch point, and determine touch point position.
9. the device according to claim 7 or 8, it is characterised in that the default frame number is 2.
10. the device according to any one of claim 6-8, it is characterised in that first induced signal is noise signal.
11. a kind of electronic equipment, the electronic equipment include capacitance touch screen, the capacitance touch screen include a plurality of drives line,
The a plurality of line of induction and the multiple driving electrodes electrically connected with a plurality of drives line are more with what a plurality of line of induction was electrically connected
Individual induction electrode, it is characterised in that the electronic equipment also includes the capacitance touch screen any one of claim 6-10
Driving detection means.
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| CN104461138B (en) * | 2014-12-05 | 2017-07-04 | 京东方科技集团股份有限公司 | The driving method of touch-control display panel, device and touch-control display panel |
| DE112015006572T5 (en) * | 2015-05-28 | 2018-03-15 | Mitsubishi Electric Corporation | Touch panel control device and vehicle information device |
| CN105824465A (en) * | 2016-03-10 | 2016-08-03 | 京东方科技集团股份有限公司 | Touch determination method and device, and display device |
| KR101773097B1 (en) * | 2017-02-14 | 2017-09-19 | 주식회사 아나패스 | Capacitance detection apparatus and driving method of capacitance detection apparatus |
| TWI636388B (en) * | 2017-07-25 | 2018-09-21 | 友達光電股份有限公司 | Method and detect circuit for selecting touch detection time |
| CN109782937B (en) * | 2017-11-13 | 2021-03-05 | 京东方科技集团股份有限公司 | Touch driving method and device and display terminal |
| WO2019136642A1 (en) * | 2018-01-10 | 2019-07-18 | 深圳市汇顶科技股份有限公司 | Electrode abnormality handling method, device, touch screen and electronic terminal |
| CN112363639B (en) * | 2020-11-11 | 2023-04-18 | 青岛海信商用显示股份有限公司 | Intelligent device and control method thereof |
| CN112684935B (en) * | 2020-12-30 | 2024-03-19 | 深圳市康冠商用科技有限公司 | Capacitive touch error correction method and device, computer equipment and storage medium |
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