CN104423750B - The touch panel and its application method of detectable stylus - Google Patents
The touch panel and its application method of detectable stylus Download PDFInfo
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- CN104423750B CN104423750B CN201310407335.0A CN201310407335A CN104423750B CN 104423750 B CN104423750 B CN 104423750B CN 201310407335 A CN201310407335 A CN 201310407335A CN 104423750 B CN104423750 B CN 104423750B
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- General Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
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- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
A kind of touch panel and its application method of detectable stylus.The touch panel of the detectable stylus executes an at least self-scanning period and at least one mutual scan period, and when being all detected self-scanning period and mutual scan period in each scanning frame, and the touching identification of stylus can be just identified.
Description
Technical field
The present invention relates to a kind of touch panels, more particularly to a kind of detectable stylus（stylus）Touch panel.
Background technology
Stylus（stylus）For a kind of auxiliary tool of Touch Screen.The tip very little of stylus, thus be difficult by one
As Touch Screen sense.Therefore, when using general Touch Screen, the capacitive character touch-control of special manufacture need to usually be used
Pen.
However, conventional touch pen（Such as capacitive character stylus）Comparable manufacturing process and cost need to be expended.Furthermore it encounters
When failure, forgetting or loss, capacitive character stylus is not easy to replace immediately.
Therefore there is an urgent need for a kind of novel mechanisms of proposition to detect stylus（The stylus of especially no special manufacture）, provide more
More conveniences gives the user of general Touch Screen.
Invention content
In view of above-mentioned, the first purpose of the embodiment of the present invention is to propose a kind of touch panel and its method, more traditional to touch
It controls panel more efficiently and more correctly detects stylus.
According to embodiments of the present invention, the touch panel that can detect stylus includes the multiple electrodes being arranged along first axis
Row, and the multiple electrodes being axially arranged along second arrange.The confluce of each rows of electrodes and electrodes series has mutual capacitance, and each electricity
Extremely row has self-capacitance with each electrodes series.In applying a voltage in electrodes series or rows of electrodes in a self-scanning period, then measure phase
Same electrodes series or rows of electrodes are to detect the stylus on the surface of touching touch panel.In applied in a mutual scan period voltage in
One is axial, then measures another axial direction to detect the stylus on the surface of touching touch panel.In in each scanning frame, execute at least
One self-scanning period and at least one mutual scan period, and when being all detected self-scanning period and mutual scan period, stylus
Touching identification can just be identified.
Description of the drawings
Fig. 1 shows the schematic diagram of the touch panel of the embodiment of the present invention.
The schematic diagram of Fig. 2 illustrates scanning frame sequence.
Fig. 3 A show self initial data relative to default from touch threshold.
Fig. 3 B show mutual initial data relative to default mutual touch threshold.
Fig. 4 shows the flow chart of the touch action of the identification stylus of the embodiment of the present invention.
Fig. 5 shows the flow chart of the touch action of the releasing stylus of the embodiment of the present invention.
Fig. 6 shows the flow chart of the touch action of the releasing stylus of another embodiment of the present invention.
Accompanying drawings symbol description
100 touch panels
11 rows of electrodes
12 electrodes series
The step of touch action of 41~47 identification styluses
The step of touch action of 51~57 releasing styluses
The step of touch action of 61~63 releasing styluses
CsSelf-capacitance
CmMutual capacitance
THsFrom touch threshold
THmMutual touch threshold
The mutual threshold values of TH
Specific implementation mode
Fig. 1 shows the schematic diagram of the touch panel 100 of the embodiment of the present invention.The touch panel 100 of the present embodiment can be applied
In electronic device, such as mobile phone.Touch panel 100（Such as capacitance type touch-control panel）By 12 institute of rows of electrodes 11 and electrodes series
Composition.Each rows of electrodes 11 and the confluce of electrodes series 12 have mutual capacitance（mutual capacitance）Cm；And each electricity
Extremely row 11 then has self-capacitance with each electrodes series 12（self capacitance）Cs.The touch panel 100 of the present embodiment can
Stylus more efficiently and more correctly is detected to execute correlation function compared with conventional touch panel.The so-called stylus of the present embodiment
General no special manufacture or capacitive stylus can be referred to.
With continued reference to Fig. 1, for self-capacitance Cs, in self-scanning（self scan）A voltage is applied in period in electrodes series 12
Or rows of electrodes 11, then by detection circuit（It does not show）Identical electrodes series 12 or rows of electrodes 11 are measured to detect touching touch surface
100 front of plate（Or touch surface）Stylus.For mutual capacitance Cm, in mutual scanning（mutual scan）A voltage is applied in period
In an axis（Such as electrodes series 12）, then by another axis of detection circuit measurement（Such as rows of electrodes 11）Touch panel is touched with detection
100 stylus.
The schematic diagram of Fig. 2 illustrates scanning（Or it measures）Frame（scan frame）Sequence.According to one of the feature of the present embodiment,
It can will be multiple（Ten as illustrated in Fig. 2）Prior scans frame（It is relevant to self-capacitance Cs's）Self initial data（self raw
data）It is added up.It is usually very weak in view of the intensity of stylus obtained self initial data when detection, therefore cumulative scan
After the self initial data of frame, touch-control sensitivity can be enhanced.
According to another feature of the present embodiment, executed multiple in each scanning frame with continued reference to Fig. 2（As Fig. 2 is illustrated
Two）The identical self-scanning period（self scan cycle）, then the self-scanning initial data in these self-scanning periods given
To add up.Thereby, these self initial datas added up can reinforce the touch-control sensitivity of touch panel 100.
According to the further feature of the present embodiment, with continued reference to Fig. 2, swept certainly in each scanning frame in addition to execution is one or many
It retouches outside the period, also performs the mutual scan period at least once（mutual scan cycle）, as illustrated in fig. 2.Performed is mutual
Scan period（It is relevant to mutual capacitance Cm's）Mutual initial data（mutual raw data）It can be used to confirm that stylus touching is touched
Control the surface of panel 100.For example, in the present embodiment, only when being all detected in self-scanning period and mutual scan period, touching
Touching identification can just be identified.In other words, in the present embodiment, if one of self-scanning period or mutual scan period are not detected
It measures, then touching identification will not be identified.It is performed simultaneously the self-scanning period and the mutual scan period can be used to prevent surrounding enviroment
Change the influence for touch panel 100.
In the present embodiment, as shown in Figure 3A, for self-capacitance Cs, when（One or more self-scanning periods）Self initial data
More than default from touch threshold THsWhen, touching identification is just detected at last.As shown in Figure 3B, for mutual capacitance Cm, when（At least
One mutual scan period）Mutual initial data, which is more than, presets mutual touch threshold THmWhen, touching identification is just detected at last.
Fig. 4 shows the flow chart of the touch action of the identification stylus of the embodiment of the present invention.It, will in step 41（Scanning frame
One or more self-scanning periods in）Self-capacitance CsCorresponding self initial data with from touch threshold THsIt makes comparisons.If step 41
The result is that negative（Also that is, self initial data is non-is more than from touch threshold THs）, then ignore touch action（Step 42）.It is no
Then, flow enters step 43, will（In scanning frame）Mutual capacitance CmCorresponding mutually initial data and mutual touch threshold THmIt makes comparisons.Such as
Fruit step 43 the result is that negative（Also that is, mutually initial data is non-is more than mutual touch threshold THm）, then ignore touch action（Step
Rapid 44）；Otherwise, in step 45, progression count value.If count value is not greater than the set value（The "No" individual path of step 46）, then
Flow returns to step 41 to handle next scanning frame.If count value is greater than the set value（The "Yes" individual path of step 46）, then touch
It touches and acts i.e. identified and touch panel 100 into stylus modes（Step 47）.As shown in Fig. 3 A or Fig. 3 B, count value is used
And coordinate setting value to prevent the mistake touching identification caused by unstable initial data.In the present embodiment, it flows as shown in Figure 4
Journey, only after initial data is stablized（Also that is, initial data reaches preset times more than touch threshold）, touch action just meeting
Really identified.After entering stylus modes（In other words, after leaving finger mode）, need to adjust some parameters.For example,
Increase the preset times that initial data is more than touch threshold, with the accuracy of enhancing touching identification.Furthermore in stylus modes
In, limit to the identification of algorithm multi-point touch in the identification of single-point contact rather than finger mode.
Fig. 5 shows the touch action of the releasing stylus of the embodiment of the present invention（Leave stylus modes）Flow chart.In
Step 51, will（In one or more self-scanning periods of scanning frame）Self-capacitance CsCorresponding self initial data with from touch threshold THsMake
Compare.It is less than from touch threshold TH if self initial data is non-s, then ignore self initial data（Step 52）.Otherwise, flow enters
Step 53, will（In scanning frame）Mutual capacitance CmCorresponding mutually initial data and mutual touch threshold THmIt makes comparisons.If mutual original number
It is less than mutual touch threshold TH according to non-m, then ignore mutual initial data（Step 54）；Otherwise, in step 55, progression count value.If meter
Numerical value is not greater than the set value（The "No" individual path of step 56）, then flow return to step 51 to handle next scanning frame.If meter
Numerical value is greater than the set value（The "Yes" individual path of step 56）, then touch action is released from and touch panel 100 leaves touch-control
Pen mode（Step 57）.As shown in Fig. 3 A or Fig. 3 B, using count value and coordinate setting value to prevent because of unstable initial data institute
Caused by mistake touching release.In the present embodiment, flow as shown in Figure 5, only after initial data is stablized（Also that is, it is former
Beginning data reach preset times less than touch threshold）, touch action just can be released really.
Fig. 6 shows the touch action of the releasing stylus of another embodiment of the present invention（Leave stylus modes）Flow
Figure.It, will in step 61（In scan period）Mutual capacitance CmThe corresponding mutually finger of initial data and finger mode touching is relevant
Mutual threshold value TH makes comparisons.Above-mentioned finger touch relevant mutual threshold value TH be typically larger than stylus modes stylus touching it is relevant
Mutual touch threshold THm.If mutual initial data is non-to be more than mutual threshold value TH, ignore mutual initial data（Step 62）.Otherwise, if
Mutual initial data is more than mutual threshold value TH, indicates that finger touches touch panel 100, then the touch action of stylus be released from and
Touch panel 100 leaves stylus modes（Step 63）.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not limited to scope of the presently claimed invention；
All equivalent changes or modification completed under other revealed spirit without departing from invention, should be included in the right of the present invention
In the range of it is required that.
Claims (14)
1. a kind of touch panel of detectable stylus, including：
Multiple electrodes row is arranged along first axis；And
Multiple electrodes arrange, and along the second axial setting, the confluce of each rows of electrodes and electrodes series has mutual capacitance, and each rows of electrodes
There is self-capacitance with each electrodes series；
Wherein, in applying a voltage in the electrodes series or rows of electrodes in a self-scanning period, then the identical electrodes series or electricity are measured
It extremely goes to detect the stylus on the surface for touching the touch panel；It is axial in one in applying a voltage in a mutual scan period, then measure
Another axial direction is surveyed to detect the stylus on the surface for touching the touch panel；
Wherein in each scanning frame, an at least self-scanning period and at least one mutual scan period are executed, and when self-scanning week
When phase and the mutual scan period are all detected, the touching identification of stylus can be just identified,
The relevant self initial data of self-capacitance institute of plurality of prior scans frame is cumulatively added.
2. can detect the touch panel of stylus according to claim 1, wherein in each scanning frame, execute multiple identical
The self-scanning period, then the self-scanning initial data in these self-scanning periods is added up.
3. the touch panel of stylus is can detect according to claim 2, wherein in a scanning frame, when self initial data is big
In default from touch threshold, and mutually initial data is more than when presetting mutual touch threshold, and the touching identification of stylus can be just identified.
4. the touch panel of stylus is can detect according to claim 2, wherein in a scanning frame, when self initial data is small
In default from touch threshold, and mutually initial data is less than when presetting mutual touch threshold, and the touch action of stylus can be just released from.
5. the touch panel of stylus is can detect according to claim 1, wherein in a scanning frame, when mutual initial data is big
When finger touching relevant default mutual threshold value, the touch action of stylus can be just released from.
6. the touch panel of stylus is can detect according to claim 1, wherein when the self initial data for being relevant to self-capacitance
And be relevant to after the mutual initial data stabilization of mutual capacitance, the touching identification of stylus can be just identified.
7. the touch panel of stylus is can detect according to claim 1, wherein when the self initial data for being relevant to self-capacitance
And be relevant to after the mutual initial data stabilization of mutual capacitance, the touch action of stylus can be just released from.
8. a kind of method using touch panel to detect stylus, including：
Multiple electrodes row is provided, is arranged along first axis；
Multiple electrodes row are provided, along the second axial setting, the confluce of each rows of electrodes and electrodes series has mutual capacitance, and each
Rows of electrodes has self-capacitance with each electrodes series；
In applying a voltage in the electrodes series or rows of electrodes in a self-scanning period, then measure the identical electrodes series or rows of electrodes with
The stylus on the surface of the touch panel is touched in detection；
It is axial in one in applying a voltage in a mutual scan period, then another axial direction is measured to detect the surface for touching the touch panel
Stylus；
In in each scanning frame, execute an at least self-scanning period and at least one mutual scan period, and when the self-scanning period with
When the mutual scan period is all detected, the touching identification of stylus can be just identified；And
The relevant self initial data of self-capacitance institute of cumulative multiple prior scans frames.
9. also including in the method for detecting stylus using touch panel according to claim 8：
In in each scanning frame, multiple identical self-scanning periods are executed；And by the self-scanning original number in these self-scanning periods
According to being added up.
10. the method using touch panel to detect stylus according to claim 9, wherein in a scanning frame, when certainly
Initial data is more than default from touch threshold, and mutually initial data is more than when presetting mutual touch threshold, the touching identification of stylus
It can just be identified.
11. the method using touch panel to detect stylus according to claim 9, wherein in a scanning frame, when certainly
Initial data is less than default from touch threshold, and mutually initial data is less than when presetting mutual touch threshold, the touch action of stylus
It can just be released from.
12. the method using touch panel to detect stylus according to claim 8, wherein in a scanning frame, when mutual
When initial data touches relevant default mutual threshold value more than finger, the touch action of stylus can be just released from.
13. the method using touch panel to detect stylus according to claim 8, wherein when be relevant to self-capacitance from
After initial data and the mutual initial data for being relevant to mutual capacitance are stablized, the touching identification of stylus can be just identified.
14. the method using touch panel to detect stylus according to claim 8, wherein when be relevant to self-capacitance from
After initial data and the mutual initial data for being relevant to mutual capacitance are stablized, the touch action of stylus can be just released from.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310407335.0A CN104423750B (en) | 2013-09-09 | 2013-09-09 | The touch panel and its application method of detectable stylus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310407335.0A CN104423750B (en) | 2013-09-09 | 2013-09-09 | The touch panel and its application method of detectable stylus |
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| CN104423750A CN104423750A (en) | 2015-03-18 |
| CN104423750B true CN104423750B (en) | 2018-09-04 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102561546B1 (en) * | 2015-08-19 | 2023-07-31 | 가부시키가이샤 와코무 | Method for detecting of a sensor controller by a stylus, stylus, and sensor controller |
| KR102468731B1 (en) * | 2017-12-27 | 2022-11-18 | 엘지디스플레이 주식회사 | Touch driving circuit, touch display device and pen data recognition method |
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| CN102810033A (en) * | 2011-05-30 | 2012-12-05 | 义隆电子股份有限公司 | Method for distinguishing multiple touch objects on touch pad and computer readable medium |
| CN103019483A (en) * | 2011-09-22 | 2013-04-03 | 义隆电子股份有限公司 | Touch object identification method |
| CN103076939A (en) * | 2013-02-05 | 2013-05-01 | 旭曜科技股份有限公司 | Method for removing touch noise through self-capacitance and mutual-capacitance induction alternate scanning |
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|---|---|---|---|---|
| CN102612676A (en) * | 2009-08-21 | 2012-07-25 | 李圣昊 | Method and device for recognizing touch input |
| CN102810033A (en) * | 2011-05-30 | 2012-12-05 | 义隆电子股份有限公司 | Method for distinguishing multiple touch objects on touch pad and computer readable medium |
| CN103019483A (en) * | 2011-09-22 | 2013-04-03 | 义隆电子股份有限公司 | Touch object identification method |
| CN103076939A (en) * | 2013-02-05 | 2013-05-01 | 旭曜科技股份有限公司 | Method for removing touch noise through self-capacitance and mutual-capacitance induction alternate scanning |
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