CN104423660B - Touch device and its method for sensing - Google Patents
Touch device and its method for sensing Download PDFInfo
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- CN104423660B CN104423660B CN201310383549.9A CN201310383549A CN104423660B CN 104423660 B CN104423660 B CN 104423660B CN 201310383549 A CN201310383549 A CN 201310383549A CN 104423660 B CN104423660 B CN 104423660B
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- signaling point
- signal
- touching signals
- point
- touch device
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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
Abstract
The present invention relates to technical field of touch control, provide a kind of method for sensing of touch device, which includes complex signal point, which includes step: scanning receives the touching signals of the respectively signaling point；The semaphore of the respectively signaling point and the semaphore of its periphery adjacent signaling point are added up, the cumulative signal of the respectively signaling point is obtained；According to the judgement of the cumulative signal of the respectively signaling point, respectively whether the signaling point is touched.In addition, the present invention also provides a kind of touch devices.The touch device and its method for sensing that there is provided through the invention can more accurately filter out the signaling point touched, and promote the sensing accuracy of touch device.
Description
Technical field
The present invention relates to technical field of touch control, especially with respect to a kind of touch device and its method for sensing.
Background technique
Touch device has been widely used in recent years in many consumer electrical products.The technology hair of touch device at present
Greatly, more typical touch technology includes resistance-type and condenser type etc. in the compact electronic device of portable for exhibition,
Operating principle system detects the change in electric of touch point position using induction electrode, and each using linking on different directions axis
The tie line of induction electrode transmits signals back to touch device and completes to position.
Product in actual use, usually there are various signal interferences in the ambient enviroment of touch device, those letter
Number interference effect makes induction electrode generate corresponding signal intensity in induction electrode, those signal intensities will be detected, if letter
Number variable quantity is sufficiently large, which will be erroneously interpreted as generated signal intensity when user's touching, leads to touch device
Report point mistake, seriously affects the accuracy in detection of touch device.
Summary of the invention
As described in prior art, the interference signal in environment makes touch device generate inductive signal, when inductive signal reaches
When to some strength, it will be erroneously interpreted as touch points, report point by mistake so as to cause touch device, the sensing for influencing touch device is quasi-
Exactness.To solve the above problems, the present invention provides a kind of touch device and its method for sensing.
The present invention provides a kind of touch device method for sensing, which is characterized in that the touch device includes complex signal point, should
Touch device method for sensing includes step: scanning receives the touching signals of the respectively signaling point；By the semaphore of the respectively signaling point with
Respectively the semaphore of the signaling point periphery adjacent signaling point adds up, and obtains the cumulative signal of the respectively signaling point；According to the respectively letter
Respectively whether the signaling point is touched for the cumulative signal judgement of number point.
Furthermore the present invention also provides a kind of touch devices, and wherein the touch device includes complex signal point and a controller,
It is characterized in that, the controller includes: a receiving unit, for receiving the touching signals of each signaling point output of touch panel, and
The touching signals of the respectively signaling point are exported；One computing unit connects the receiving unit, what reception was exported from the receiving unit
The respectively touching signals of the signaling point carry out the touching signals of the touching signals of the respectively signaling point and its periphery adjacent signaling point tired
Add, obtains the respectively cumulative signal of the signaling point and output；One judging unit connects the computing unit, receives and comes from the calculating list
Each cumulative signal of member, judges whether signaling point is touched according to the cumulative signal of the respectively signaling point.
When touch panel is touched by user, touched signaling point and its ambient signal point touching signals is caused to change
Become, still, if the touching signals of the signaling point as caused by the signal interference of external environment change, then can only act on the signal
Point is based on this without having an impact to its ambient signal point, and the present invention passes through the signaling point that touching signals variation will occur and its
The touching signals variable quantity of ambient signal point adds up, so that the accumulation amount of the touching signals variable quantity of touched signaling point
Much larger than the accumulation amount of the touching signals variable quantity of the signaling point due to caused by signal interference, set out so as to more accurately screening
The signaling point of raw touching, to promote the sensing accuracy of touch device.
Detailed description of the invention
Figure 1A is the touch control device structure schematic diagram of a preferred embodiment of the present invention；
Figure 1B is cross-sectional view of the Figure 1A along hatching AA '；
Fig. 2 is the touch device method for sensing flow chart of a preferred embodiment of the present invention；
Fig. 3 is the touch device method for sensing flow chart of another preferred embodiment of the present invention；
Fig. 4 is the controller architecture schematic diagram of the touch device of a preferred embodiment of the present invention；
Fig. 5 is the controller architecture schematic diagram of the touch device of another preferred embodiment of the present invention.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing.
Figure 1A is please referred to, Figure 1A is painted the touch device of a preferred embodiment of the present invention.As shown in Figure 1A, touch device
100 include touch panel 10 and controller 14, and wherein touch panel 10 includes substrate 11, is provided with plural first axle on substrate 11
To electrode 12, plural second axial electrode 13, plural first axis electrode 12 extends along a horizontal direction and is mutually electrically insulated,
Plural second axial electrode 13 extends along a vertical direction and is mutually electrically insulated, wherein plural first axis electrode 12 and plural number
Second axial electrode 13 is mutually electrically insulated, and first axis electrode 12 and 13 infall of the second axial electrode form complex signal point
123, when touch panel is touched, corresponding signal intensity, plural first connecting line will be generated positioned at the signaling point of touch area
120 are electrically connected plural first axis electrode 12 and controller 14, the touching that plural first axis electrode will generate on each signaling point
Control signal is transmitted to controller 14 by connecting line 120, and plural second connecting line 130 is electrically connected plural second axial electrode 13
With controller 14, driving signal is transmitted to plural second axial electrode 13 by complex connecting line 130, is worth note by controller 14
Meaning, the function of first axis electrode and the second axial electrode mentioned in the present embodiment are not limited to the description of text,
It can mutually exchange, that is to say, that first axis electrode can be used as the electrode for receiving driving signal, and the second axial electrode can be made
For the electrode for sensing signal.
For clear explanation, plural first axis electrode 12 and plural second axial electrode 13 are pressed respectively in the present embodiment
It is numbered according to sequence from top to bottom, from left to right, such as positioned at the first axis electrode number of the first row is X1, be located at the
The second axial electrode number of one column is Y1.First axis electrode X1 and the second axial electrode Y1 infall are signaling point X1Y1.
The scanning mode of the present embodiment is to open respectively when the second axial electrode Y1 for being located at first row receives driving signal
The first axis electrode X1 positioned at the first row is opened to the first axis electrode X6 for being located at the 6th row, for receiving signal, with respectively
Obtain the touching signals of signaling point X1Y1, X2Y1, X3Y1, X4Y1, X5Y1, X6Y1, similarly scan the second axial electrode from a left side to
Right Y1 to Y6 completes full touch panel scanning, obtains the touching signals of all signaling points.
Figure 1B is please referred to, Figure 1B is cross-sectional view of the Figure 1A along the direction hatching AA '.As shown in Figure 1B, plural first axis
Electrode 12 and plural second axial electrode 13 are isolated by 15 mutually insulated of insulating layer to two different planes.It is worth
It is noted that in other embodiments of the present invention, plural first axis electrode 12 and plural second axial electrode 13 are settable
In same plane, cross section is insulated by way of insulation dot interlace or the perforation of whole face insulating layer.
To solve the technical problem in prior art, the present invention provides a kind of detection method of touch device, please refers to figure
2, Fig. 2 are painted the touch device method for sensing of a preferred embodiment of the present invention.As shown in Fig. 2, touch device method for sensing includes
Following steps:
S1, the scanning of controller 14 receive the touching signals from each signaling point 123 of touch panel 10.Please refer to figure
Driving signal is transferred to the second axial electrode 13 by the second connecting line 130 by 1A, controller 14, which usually shows
For a current signal, it is to be understood that according to different touch-control principles, driving signal can also show as other signals.The
Two axial electrodes 13 receive driving signal, and an electric field is formed between first axis electrode, when touch panel 10 is touched
When, electric field changes, and the signal positioned at the signaling point 123 of touch area changes, and the signal on signaling point 123 is by first
Axial electrode receives, and controller 14 scans first axis electrode at regular intervals, by the first connecting line 120, receives touch-control
Touching signals on panel 10 on each signaling point 123.
S2 adds up the semaphore of each signaling point and the semaphore of its periphery adjacent signaling point, obtains each letter
The cumulative signal of number point.On the reception touch panel 10 of controller 14 after the touching signals of signaling point 123, it is carried out cumulative dynamic
Make, i.e., the semaphore of the semaphore and its periphery adjacent signaling point of each signaling point 123 adds up, obtain each signaling point
Cumulative signal, wherein the adjacent signaling point in periphery can be all adjacent letters of the adjacent signaling point in part or periphery
Number point.In the present invention, the cumulative movement of signal can both execute at analog signal end, can also be executed in digital end, control
Device 14 processed shows as the analog signal of waveform from the signal that touch panel 10 receives, and passes through analog-to-digital conversion, waveform modelling signal
It is converted into digital signal, cumulative movement is executed at analog signal end, refers to and analog signal adds up before analog-to-digital conversion,
That is the superposition of analog signal wave；Cumulative movement is executed in digital end, is referred to the number of each touching signals after analogue to digital conversion
Signal adds up.In the present embodiment, the semaphore of signaling point 123 refers to the touch-control letter for each signaling point that controller 14 receives
Number amount, it is notable that in other embodiments of the present invention, the semaphore of signaling point 123 can also be the touching of signaling point
Change amount signal is controlled, wherein the touching signals variable quantity of signaling point 123 refers to the touch-control for the signaling point 123 that controller 14 receives
The difference for the semaphore that semaphore and signaling point 123 transmit out when being not affected by any touching or interference.By believing touch-control
Number variable quantity add up, the cumulative signal positioned at touch area signaling point can be strengthened, expand itself and be located at non-touch-control region
Gap between the cumulative signal of signaling point, so that controller can more easily determine out whether signaling point is located at touch area.
It is worth noting that, in step S2, when the touch-control letter that the semaphore of signaling point is the signaling point that controller receives
When number amount, which, which can be, carries out the cumulative of signal wave at analog signal end or carries out digital letter in digital signal end
Number it is cumulative；When the semaphore of signaling point is the touching signals variable quantity of signaling point, which can be in analog signal
End is executed in digital signal end, it is notable that when being added up at analog signal end, controller is by by signaling point
Touching signals be compared with a reference level and obtain the touching signals variable quantity of the signaling point, which shows as one
Analog signal.
S3 judges whether signaling point is touched according to the cumulative signal of each signaling point.Controller 14 is by by each letter
The cumulative signal of number point is compared with a first threshold, judges whether the cumulative signal is virtual value, if cumulative signal is greater than
Or it is equal to first threshold, which is virtual value, then determines that the signaling point is touched, and then pass through the signaling point pair
The coordinate answered determines the position of touching.Wherein, first threshold can be pre-set initial experience value, be also possible to pass through
Judge actual environment and immediately determining Temp Threshold.
Referring to Fig. 3, Fig. 3 is painted the touch device method for sensing of another preferred embodiment of the present invention.As shown in figure 3, this
The difference of embodiment and a upper embodiment is, receives the touching signals step S1 from each signaling point of touch panel in controller
Later, a determination step S4 is further included, the touching signals of each signaling point are compared with a second threshold, not by touching signals
Signaling point information equal to the second threshold exports.The touching signals of each signaling point are compared with second threshold, are determined
Whether the touching signals of each signaling point change, and determine that the touching signals have hair if touching signals and second threshold are unequal
Changing.As it was earlier mentioned, the touching signals of signaling point change, if signaling point when signaling point is located at touched region
Touching signals do not change, indicate that the signaling point is not touched, the touching signals for judging each signaling point by step S4 are
No to change, controller carries out cumulative movement to the changed signaling point of touching signals, if not changing without pair
It carries out cumulative movement, to save the time that subsequent cumulative movement executes.Wherein, second threshold is not affected by any for touch panel
When touching and being not affected by signal interference, the touching signals amount for each signaling point that controller scanning receives.
When touch panel is touched by user, touched signaling point and its ambient signal point touching signals is caused to change
Become, still, if the touching signals of the signaling point as caused by the signal interference of external environment change, then can only act on the signal
Point is based on this without having an impact to its periphery adjacent signaling point, and the present invention passes through the signaling point that touching signals variation will occur
It adds up with the touching signals variable quantity of its ambient signal point, so that the touching signals variable quantity of touched signaling point is tired
Dosage is much larger than the accumulation amount of the touching signals variable quantity of the signaling point due to caused by signal interference, so as to more accurately screen
The signaling point touched out, to promote the thoughts and feelings accuracy of touch device.
According to above-mentioned method for sensing, the present invention also provides a kind of controllers of touch device.Referring to Fig. 4, Fig. 4 is painted this
Invent the controller of the touch device of a preferred embodiment.As shown in figure 4, controller 14 includes receiving unit 141 for receiving
The touching signals of each signaling point output of touch panel, and output it；Computing unit 142 connects receiving unit 141, receives and
The touching signals of each signaling point exported from receiving unit 141, by the touching signals of signaling point and its periphery adjacent signaling point
Touching signals add up, and obtain the cumulative signal of each signaling point and output；Judging unit 143 connects computing unit 142, connects
Each cumulative signal from computing unit 142 is received, judges whether signaling point is touched according to the cumulative signal of each signaling point.
Referring to Fig. 5, Fig. 5 is painted the controller of the touch device of another preferred embodiment of the present invention.As shown in figure 5, this
The difference of embodiment and a upper embodiment is that controller 14 further includes judging unit 144, is connected to receiving unit 141 and meter
It calculates between unit 142, receiving unit 141 is connected by judging unit 144 with computing unit 142, is received and is come from receiving unit
The touching signals of each signaling point of 141 outputs, by the way that the touching signals of each signaling point compared with a second threshold, are determined touching
Control signal has a changed signaling point, and the touching signals of the information and each signaling point are exported, and computing unit 142 is according to connecing
The output information received only to there is the point that touching signals variation occurs to carry out accumulation process, by this way, it is single can to save calculating
The processing time of member 142, and the required time is long when the time saved acts than 144 execution of judging unit, therefore can integrally be promoted
The processing speed of controller 14.Wherein, when which is that touch panel is not influenced by any touching or environment, at the beginning of each signaling point
Beginning signal value determines that the touching signals of the signaling point do not change if the touching signals of signaling point are equal to the threshold value.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (6)
1. a kind of touch device method for sensing, which is characterized in that the touch device includes complex signal point, touch device sensing
Method includes step:
Scanning receives the touching signals of the respectively signaling point；
The touching signals of each signaling point are compared with a second threshold, touching signals are not equal to the signal of the second threshold
Point information output；
The semaphore of the respectively signaling point and the semaphore of the signaling point periphery adjacent signaling point are added up, the respectively signal is obtained
The cumulative signal of point；
The cumulative signal of the respectively signaling point is compared with a first threshold, to judge respectively whether the signaling point is touched, if
The cumulative signal is greater than or equal to the first threshold, then determines that the signaling point is touched；
Wherein, which is the accumulation amount of the touching signals variable quantity of signaling point caused by signal interference, the second threshold
When being not affected by any touching for the touch device and be not affected by signal interference, the touch-control for each signaling point that controller scanning receives
Semaphore.
2. touch device method for sensing as described in claim 1, which is characterized in that respectively the semaphore of the signaling point is the respectively letter
The touching signals amount of number point.
3. touch device method for sensing as described in claim 1, which is characterized in that respectively the semaphore of the signaling point is the respectively letter
The touching signals variable quantity of number point.
4. touch device method for sensing as claimed in claim 2, which is characterized in that the touching signals of signaling point show as simulating
Signal or digital signal.
5. touch device method for sensing as claimed in claim 3, which is characterized in that the touching signals variation of signaling point is shown as
Analog signal or digital signal.
6. a kind of touch device, wherein the touch device includes complex signal point and a controller, which is characterized in that the controller
Include:
One receiving unit for receiving the touching signals of each signaling point output of touch panel, and the touch-control of the respectively signaling point is believed
Number output；
One judging unit, wherein the judging unit is connected to the receiving unit, receives the respectively letter exported from the receiving unit
The touching signals of number point, the touching signals of each signaling point received are compared with a second threshold, not by touching signals
Signaling point information equal to the second threshold exports；
One computing unit connects the judging unit, receives the touching signals exported from the judging unit not equal to second threshold
The touching signals of the signaling point of value, by the semaphore of the touching signals of the respectively signaling point and the signaling point periphery adjacent signaling point into
Row is cumulative, obtains the respectively cumulative signal of the signaling point and output；
One judging unit connects the computing unit, receives each cumulative signal from the computing unit, by the tired of the respectively signaling point
Plus signal is compared with a first threshold, to judge respectively whether the signaling point is touched, if the cumulative signal is greater than or equal to
The first threshold then determines that the signaling point is touched；
Wherein, which is the accumulation amount of the touching signals variable quantity of signaling point caused by signal interference, the second threshold
When being not affected by any touching for the touch device and be not affected by signal interference, the touch-control for each signaling point that controller scanning receives
Semaphore.
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| CN101526872A (en) * | 2008-03-05 | 2009-09-09 | 上海普芯达电子有限公司 | Method for monitoring button state of capacitive sensing screen and capacitive sensing system |
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