CN105511655A - Touch panel and detection method of same - Google Patents
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Abstract
The invention discloses a touch detection method which is applied in a touch panel and comprises the steps that a touch unit group of the touch panel is made to start detection at an initial mode; initial detection voltages are obtained in succession and then treated by difference computation, wherein an initial differential voltage is obtained and taken as a reference value; the touch unit group is made to start the detection at a running mode; the detection voltages are obtained in succession and then treated by difference computation, wherein differential voltages are obtained; the differential voltages are successively subtracted by the reference value; difference values are generated in succession; whether the touch unit group contains at least one touch applying point and at least one touch removal point is determined according to positive and negative sequence relations of the difference values; and the reference value is updated into the differential value when the touch unit group comprises the touch removal point.
Description
Technical field
The invention relates to a kind of touch technology, and relate to a kind of contact panel and method for detecting thereof especially.
Background technology
Contact panel due to the intuition of input mode and convenience, and is combined with display panel, and is widely used on many portable electric devices such as intelligent mobile phone and flat computer.In current touch technology, capacitance type touch-control panel is the touch technology of most main flow.In part technology, capacitance type touch-control panel can first carry out scanning detecting when initial, and after acquisition reference value, scans constantly to detect.The numerical value meeting that it detects and this fixing group reference value compare the position recording actual touch-control.
Such as, but when contact panel does not start, some object possible, the hand of user, is first placed in the surface of contact panel.Therefore, after contact panel starts, the reference value obtained through scanning will cannot obtain numerical value accurately due to the impact of hand.When contact panel carries out actual touch detection, cannot judge by correct carrying out.
Therefore, how designing a new contact panel and method for detecting thereof, to solve the above problems, is an industry problem demanding prompt solution for this reason.
Summary of the invention
Therefore, one of the present invention aspect is providing a kind of touch detection method, and be applied in contact panel, wherein contact panel comprises touch control unit array, and the plural touch control unit system in touch control unit array is arranged as the capable and plural touch control unit row of plural touch control unit.Touch detection method comprises: in originate mode, the touch control unit group of contact panel is detected, sequentially to obtain plural initial scout magnitude of voltage, and each two adjacent initial scout magnitudes of voltage are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain plural initial differential magnitude of voltage, wherein touch control unit group corresponds to the capable and touch control unit of touch control unit and arranges one of them; Make initial differential magnitude of voltage as one of touch control unit group group reference value; In operating mode, touch control unit group is detected, sequentially to obtain plural detection threshold, and each two adjacent detection thresholds are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain complex difference component voltage value; Make differential voltage value sequentially therewith this group reference value subtract each other, in order to do sequentially producing plural gap value, to judge according to the positive and negative ordinal relation of one of gap value whether touch control unit group comprises at least one touch-control application point and at least one touch-control removes a little, and in touch control unit group comprise touch-control to remove some time, reference value is updated to differential voltage value
According to one embodiment of the invention, wherein when touch control unit one of them not by touch-control time, its corresponding detection threshold system comprised is equivalent to reference value, and in being less than reference value by during touch-control.
According to another embodiment of the present invention, touch detection method more comprises when gap value is included in front negative and when the order of rear positive number, judge in touch control unit group, position corresponds to and is respectively touch-control application point at front negative and at least one touch control unit between rear positive number.
According to further embodiment of this invention, touch detection method more comprises: when gap value is included in front positive number and when the order of rear negative, judges that comprising touch-control in touch control unit group removes a little.
According to yet another embodiment of the invention, touch detection method more comprises: when gap value do not appear at front positive number and after the order of negative, then retain original reference value.
Embodiment one of is had more according to the present invention, wherein touch control unit group more comprises the virtual touch control unit of the virtual touch control unit in front end and rear end, be positioned at the two ends of the plural touch control unit that touch control unit group comprises, and initial scout magnitude of voltage corresponding to the virtual touch control unit of the virtual touch control unit in front end and rear end and detection threshold are this reference value.
Therefore, another aspect of the present invention is providing a kind of contact panel, comprises: touch control unit array, processing module and internal memory.Plural touch control unit system in touch control unit array is arranged as the capable and plural touch control unit row of plural touch control unit.Processing module is coupled to touch control unit array.Internal memory has the plural instruction that computing machine can perform and stores wherein, and be coupled to processing module, when instruction is performed by processing module, system carries out following action: in originate mode, the touch control unit group of contact panel is detected, sequentially to obtain plural initial scout magnitude of voltage, and each two adjacent initial scout magnitudes of voltage are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain plural initial differential magnitude of voltage, wherein touch control unit group corresponds to the capable and touch control unit of touch control unit and arranges one of them; Make initial differential magnitude of voltage as one of touch control unit group group reference value; In operating mode, touch control unit group is detected, sequentially to obtain plural detection threshold, and each two adjacent detection thresholds are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain complex difference component voltage value; Make differential voltage value sequentially therewith this group reference value subtract each other, in order to do sequentially producing plural gap value, to judge according to the positive and negative ordinal relation of gap value whether touch control unit group comprises at least one touch-control application point and at least one touch-control removes a little, with comprise in touch control unit group touch-control to remove some time, reference value is updated to differential voltage value.
According to one embodiment of the invention, wherein when touch control unit one of them not by touch-control time, its corresponding detection threshold system comprised is equivalent to reference value, and in being less than reference value by during touch-control.
According to another embodiment of the present invention, wherein when gap value is included in front negative and when the order of rear positive number, judge in touch control unit group, position corresponds to and is respectively touch-control application point at front negative and at least one touch control unit between rear positive number.
According to further embodiment of this invention, wherein when gap value is included in front positive number and when the order of rear negative, judge that comprising touch-control in touch control unit group removes a little.
According to yet another embodiment of the invention, wherein when gap value do not appear at front positive number and after the order of negative, then retain original reference value.
Embodiment one of is had more according to the present invention, wherein touch control unit group more comprises the virtual touch control unit of the virtual touch control unit in front end and rear end, be positioned at the two ends of the plural touch control unit that touch control unit group comprises, and initial scout magnitude of voltage corresponding to the virtual touch control unit of the virtual touch control unit in front end and rear end and detection threshold are this reference value.
Application the present invention advantage be contact panel system of the present invention calculate by the gap value between differential voltage value and reference value and between gap value positive and negative ordinal relation to judge that touch-control application point and touch-control remove a little.Therefore, even if user contacts contact panel under originate mode, contact panel still can judge new touch-control application point insusceptibly, and upgrades reference value under the situation that can remove at touch control object.Contact panel can be avoided under originate mode, because user's contact in advance causes incorrect reference value, and the judgement to touch-control behavior when affecting operating mode.
Accompanying drawing explanation
Fig. 1 is in one embodiment of the invention, a kind of calcspar of contact panel;
Fig. 2 A to Fig. 2 D is respectively in one embodiment of the invention, the schematic diagram of touch control unit row;
Fig. 3 is in one embodiment of the invention, the schematic diagram of touch control unit row; And
Fig. 4 is in one embodiment of the invention, a kind of process flow diagram of touch detection method.
Embodiment
Please refer to Fig. 1.Fig. 1 is in one embodiment of the invention, a kind of calcspar of contact panel 1.Contact panel 1 comprises: touch control unit array 10, processing module 12 and internal memory 14.
Touch control unit array 10 comprises plural touch control unit 100, and is arranged as the capable Y1-Y5 of touch control unit and touch control unit row X1-X5 that such as Fig. 1 illustrates, and wherein the capable Y1-Y5 of touch control unit illustrates with black, and touch control unit row X1-X5 illustrates with white.Wherein, touch control unit 100 can divide into a plurality of touch control unit group, respectively corresponds to an a touch control unit capable Y1-Y5 or touch control unit row X1-X5.It is noted that the visual actual demand adjustment in different embodiment of the line number of touch control unit and columns, not by the embodiment of Fig. 1 is limit.
In an embodiment, this contact panel 1 is such as, but not limited to capacitance type touch-control panel.Touch control unit 100 is not when contacting, and its magnitude of voltage will be a reference value.And when being subjected to touch-control action, the magnitude of voltage of touch control unit 100 will change because the capacitance of its inside is affected by touch control object and decline, become the numerical value being less than this reference value.More detailed, when touch control unit 100 is never proceeded to the state by touch-control by touch-control state, its magnitude of voltage will become the numerical value being less than this reference value from reference value.And when touch control unit 100 from by the replying state of touch-control to during not by touch-control state, its magnitude of voltage becomes reference value by from the numerical value being less than this reference value.
In an embodiment, when touch control unit 100 is not when contacting, its magnitude of voltage is such as but not limited to 1 volt, and when being subjected to touch-control action, its magnitude of voltage by the value for being less than 1 volt, such as but not limited to 0.5 volt.In other embodiments, the magnitude of voltage visual actual state of touch control unit 100 when not being subjected to touch-control action and be subjected to touch-control action and different, not by above-mentioned numerical value is limit.In an embodiment, contact panel 1 can by such as, but the mode that being not limited to circulates by column scans, one by one the touch control unit 100 that each touch control unit row X1-X5 comprises sequentially is scanned, to learn that the magnitude of voltage of each touch control unit 100 is how many, judge that the touch control unit 100 of where is subjected to touch-control action practically according to the magnitude of voltage obtained further.
Processing module 12 is coupled to touch control unit array 10 and internal memory 14.Processing module 12 can be the various processor with arithmetic capability.Internal memory 14 is in different embodiment, such as but not limited to ROM (read-only memory), flash memory, floppy disk, hard disk, CD, Portable disk, tape, can by the internal memory of the database of network access or other types, store the executable instruction 11 of multiple computing machine, and be coupled to processing module 12.When instruction performs process action by processing module 12 according to the instruction 11 stored in internal memory 14, be can perform and the touch detection method being applied to contact panel 1 is provided.Below the process action performed with regard to processing module 12 is described.
Please refer to Fig. 2 A to Fig. 2 D.Fig. 2 A to Fig. 2 D is respectively in one embodiment of the invention, the schematic diagram of touch control unit row X1.In the present embodiment, be five the touch control unit X11-X15 illustrating touch control unit row X1 and comprise.
Under the originate mode that contact panel 1 has just started, namely each touch control unit group of contact panel 1 starts to detect.In an embodiment, contact panel 1 is scan with above-mentioned circulation by column, and to the mode that the touch control unit 100 in each touch control unit row sequentially scans, obtains plural initial scout magnitude of voltage.Wherein, as previously mentioned, in one embodiment when touch control unit 100 is not when contacting, its magnitude of voltage is 1 volt, and when being subjected to touch-control action, its magnitude of voltage will be 0.5 volt.
For the touch control unit row X1 shown in Fig. 2 A, as under originate mode, the left hand of user is in order to grip the electronic installation that is configured with contact panel 1 and touch contact panel 1, the touch-control action 20 of left hand is caused to put on such as touch control unit X12, then processing module 12 can obtain initial scout magnitude of voltage Vi1-Vi5 according to putting in order of five touch control unit X11-X15, is respectively 1,0.5,1,1 and 1 volt.
Then, each two adjacent initial scout magnitudes of voltage are sequentially carried out Difference Calculation by latter one to previous subtracting each other by processing module 12, to obtain plural initial differential magnitude of voltage Vid1-Vid4.For the numerical value of above-mentioned initial scout magnitude of voltage Vi1-Vi5, initial differential magnitude of voltage Vid1-Vid4 can calculate with following formula respectively and obtain:
Vid1＝Vi2-Vi1＝-0.5；
Vid2＝Vi3-Vi2＝0.5；
Vid3＝Vi4-Vi3＝0；
Vid4＝Vi5-Vi4＝0。
Processing module 12 will make initial differential magnitude of voltage Vid1-Vid4 (-0.5,0.5,0,0) as one group of reference value Vb1-Vb4 of touch control unit row X1.In an embodiment, reference value Vb1-Vb4 can be stored in internal memory 14 by processing module 12, also or other be arranged in the storage module (not illustrating) of contact panel 1.
Under operating mode after originate mode, each touch control unit group will proceed detecting.In an embodiment, contact panel 1 is scan with above-mentioned circulation by column, and to the mode that the touch control unit 100 in each touch control unit row sequentially scans, to obtain plural detection threshold Vs1-Vs5.
For the touch control unit row X1 shown in Fig. 2 B, left hand as user is not yet removed and maintains touch-control action 20, the right hand imposes touch-control action 22 in such as touch control unit X13 simultaneously, processing module 12 can obtain detection threshold Vs1-Vs5 according to putting in order of five touch control unit X11-X15, is respectively 1,0.5,0.5,1 and 1 volt.
Then, each two adjacent detection thresholds are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain complex difference component voltage value Vd1-Vd4 by processing module 12.For the numerical value of above-mentioned detection threshold Vs1-Vs5, differential voltage value Vd1-Vd4 can calculate with following formula respectively and obtain:
Vd1＝Vs2-Vs1＝-0.5；
Vd2＝Vs3-Vs2＝0；
Vd3＝Vs4-Vs3＝0.5；
Vd4＝Vs5-Vs4＝0。
Differential voltage value Vd1-Vd4 (-0.5,0,0.5,0) and reference value Vb1-Vb4 (-0.5,0.5,0,0) subtract each other, sequentially to produce plural gap value Ve1-Ve4 by processing module 12 further.Therefore, gap value Ve1-Ve4 can calculate with following formula respectively and obtain:
Ve1＝Vd1-Vb1＝0；
Ve2＝Vd2-Vb2＝-0.5；
Ve3＝Vd3-Vb3＝0.5；
Ve4＝Vd4-Vb4＝0。
Processing module 12 judges the positive and negative ordinal relation of gap value Ve1-Ve4.In the present embodiment, when in gap value Ve1-Ve4, there is one in front negative and an order at rear positive number, such as be respectively gap value Ve2 and the Ve3 of-0.5 and 0.5, then processing module 12 will judge in touch control unit row X1, and it is touch-control application point that position corresponds to this at front negative and this touch control unit X13 between rear positive number.This means, touch control unit X13 (i.e. state of Fig. 2 A) in preceding state, not yet by touch-control, then by touch-control in present state (i.e. the state of Fig. 2 B), and forms touch-control application point.
It is noted that because gap value Ve2 and Ve3 system produce according to differential voltage value Vd2, Vd3, and differential voltage value Vd2, Vd3 produce according to detection threshold Vs2 and Vs3 and detection threshold Vs3 and Vs4 respectively.Therefore, above-mentioned position corresponds between gap value Ve2 and Ve3, is the common factor with two groups of detection thresholds, the touch control unit X13 that namely detection threshold Vs3 is relevant.
Further, when in gap value, do not occur that one when front positive number and an order at rear negative, the original reference value Vb1-Vb4 (-0.5,0.5,0,0) of reservation will not upgrade by processing module 12.
When touch control unit row X1 as shown in Figure 2 C, the touch-control action 22 that the right hand of user puts on touch control unit X13 remains, and the touch-control action that original left hand puts on touch control unit X12 has been removed, then processing module 12 can obtain new detection threshold Vs1 '-Vs5 ' according to putting in order of five touch control unit X11-X15, is respectively 1,1,0.5,1 and 1 volt.
Then, each two adjacent detection thresholds are sequentially carried out Difference Calculation by latter one to previous subtracting each other by processing module 12, to obtain complex difference component voltage value Vd1 '-Vd4 '.For the numerical value of above-mentioned detection threshold Vs1 '-Vs5 ', differential voltage value Vd1 '-Vd4 ' can calculate with following formula respectively and obtain:
Vd1’＝Vs2’-Vs1’＝0；
Vd2’＝Vs3’-Vs2’＝-0.5；
Vd3’＝Vs4’-Vs3’＝0.5；
Vd4’＝Vs5’-Vs4’＝0。
Differential voltage value Vd1 '-Vd4 ' (0 ,-0.5,0.5,0) and reference value Vb1-Vb4 (-0.5,0.5,0,0) subtract each other, sequentially to produce plural gap value Ve1 '-Ve4 ' by processing module 12 further.Therefore, gap value Ve1 '-Ve4 ' can calculate with following formula respectively and obtain:
Ve1’＝Vd1’-Vb1＝0.5；
Ve2’＝Vd2’-Vb2＝-1；
Ve3’＝Vd3’-Vb3＝0.5；
Ve4’＝Vd4’-Vb4＝0。
Processing module 12 judges the positive and negative ordinal relation of gap value Ve1 '-Ve4 '.In the present embodiment, when two adjacent gap value of gap value Ve1 '-Ve4 ' have a preceding positive number and a posterior negative, such as be respectively gap value Ve1 ' and the Ve2 ' of 0.5 and-1, then judgement is compared with the previous time point scanned by processing module 12, has the object of touch-control just to remove in touch control unit row X1.Therefore, processing module 12 will make differential voltage value Vd1 '-Vd4 ' (0 ,-0.5,0.5,0) save as reference value Vb1 '-Vb4 '.And be still respectively a preceding negative and a posterior positive number due to gap value Ve2 ' and Ve3 ', therefore processing module 12 still can judge that touch control unit X13 is touch-control application point.
When touch control unit row X1 as shown in Figure 2 D, the touch-control action 22 that the right hand of user puts on touch control unit X13 removes further, then processing module 12 can obtain new detection threshold Vs1 according to putting in order of five touch control unit X11-X15 "-Vs5 ", be respectively 1,1,1,1 and 1 volt.
Then, each two adjacent detection thresholds are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain complex difference component voltage value Vd1 by processing module 12 "-Vd4 ".Detection threshold Vs1 for above-mentioned "-Vs5 " numerical value, differential voltage value Vd1 "-Vd4 " can respectively with following formula son calculate and obtain:
Vd1”＝Vs2”-Vs1”＝0；
Vd2”＝Vs3”-Vs2”＝0；
Vd3”＝Vs4”-Vs3”＝0；
Vd4”＝Vs5”-Vs4”＝0。
Processing module 12 is further by differential voltage value Vd1 "-Vd4 " (0,0,0,0) subtract each other with reference value the Vb1 '-Vb4 ' (0 ,-0.5,0.5,0) just to have upgraded, sequentially to produce plural gap value Ve1 "-Ve4 ".Therefore, gap value Ve1 "-Ve4 " can calculate with following formula respectively and obtain:
Ve1”＝Vd1”-Vb1’＝0；
Ve2”＝Vd2”-Vb2’＝0.5；
Ve3”＝Vd3”-Vb3’＝-0.5；
Ve4”＝Vd4”-Vb4’＝0。
Processing module 12 judges gap value Ve1 "-Ve4 " positive and negative ordinal relation.In the present embodiment, owing to being respectively the gap value Ve2 of 0.5 and-0.5 " and Ve3 " be a preceding positive number and a posterior negative, therefore judgement is compared with the previous time point scanned by processing module 12, and the touch control unit X13 in touch control unit row X1 is that touch-control removes a little.This means, touch control unit X13 (i.e. state of Fig. 2 C) in preceding state has touch-control, is then removed in present state (i.e. the state of Fig. 2 D), and forms touch-control and remove a little.
Therefore, processing module 12 by detect touch control unit row X1 have touch-control remove some when, make differential voltage value Vd1 "-Vd4 " (0,0,0,0) save as reference value Vb1 "-Vb4 ".
Therefore, contact panel 1 of the present invention be calculate by the gap value between differential voltage value and reference value and between gap value positive and negative ordinal relation to judge that touch-control application point and touch-control remove a little.Therefore, even if user has contacted contact panel 1 under originate mode, contact panel 1 still can judge new touch-control application point insusceptibly, and upgrades reference value under the situation that can remove at touch control object.Contact panel 1 can be avoided under originate mode, because user's contact in advance causes incorrect reference value, and the judgement to touch-control behavior when affecting operating mode.
It is noted that above-described embodiment is for touch control unit row X1.In actual applications, all touch control unit row X1-X5 in the contact panel 1 and capable Y1-Y5 of touch control unit all can adopt above-mentioned mechanism carry out the judgement of touch-control and whether upgrade the judgement of reference value.Further, in the above embodiments, be with at front positive number and adjacent at rear negative, and at front negative and in the adjacent situation explanation of rear positive number.When at front positive number and at rear negative or at front negative and when rear positive number is not adjacent, also can apply same mechanism and carry out estimation & disposing, anyly have the knack of this those skilled in the art, when knowing by inference in the spirit and scope not departing from this disclosure, therefore repeat no more.
Please refer to Fig. 3.Fig. 3 is in one embodiment of the invention, the schematic diagram of touch control unit row X1.
In an embodiment, processing module 12 is when carrying out above-mentioned calculating, and can further consider the front end virtual touch control unit X10 that touch control unit row X1 comprises and the virtual touch control unit X16 in rear end, be the both sides being positioned at touch control unit X11-X15.In Fig. 3, front end virtual touch control unit X10 and the virtual touch control unit X16 in rear end illustrates with dotted line.Wherein, the magnitude of voltage of front end virtual touch control unit X10 and the virtual touch control unit X16 in rear end, no matter be that the initial scout magnitude of voltage under originate mode or the detection threshold under operating mode are reference value.
For example, if touch control unit row X1 was not originally subjected to any touch-control action, and after consideration front end virtual touch control unit X10 and the virtual touch control unit X16 in rear end, reference value VB0-VB5 will be (0,0,0,0,0,0).When touch control unit row X1 is under state as shown in Figure 3, be subjected to touch-control action 30 and 32 at touch control unit X11 and X15.Therefore, processing module 12 can obtain detection threshold VS0-VS6 according to front end virtual touch control unit X10, five touch control unit X11-X15 and putting in order of the virtual touch control unit X16 in rear end, is respectively 1,0.5,1,1,1,0.5 and 1 volt.
Then, each two adjacent detection thresholds are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain complex difference component voltage value VD0-VD5 by processing module 12.For the numerical value of above-mentioned detection threshold VS0-VS6, differential voltage value VD0-VD5 can calculate with following formula respectively and obtain:
VD0＝VS1-VS0＝-0.5；
VD1＝VS2-VS1＝0.5；
VD2＝VS3-VS2＝0；
VD3＝VS4-VS3＝0；
VD4＝VS5-VS4＝-0.5；
VD5＝VS6-VS5＝0.5。
Differential voltage value VD0-VD5 (-0.5,0.5,0,0 ,-0.5,0.5) and reference value VB0-VB5 (0,0,0,0,0,0) subtract each other, sequentially to produce plural gap value VE0-VE5 by processing module 12 further.Therefore, gap value VE0-VE5 can calculate with following formula respectively and obtain:
VE0＝VD0-VB0＝-0.5；
VE1＝VD1-VB1＝0.5；
VE2＝VD2-VB2＝0；
VE3＝VD3-VB3＝0；
VE4＝VD4-VB4＝-0.5；
VE5＝VD5-VB5＝0.5。
Owing to appearing at front negative and the order at rear positive number between gap value VE0 and VE1, and between gap value VE4 and VE5, also appear at front negative and the order at rear positive number, therefore processing module 12 will judge in touch control unit row X1, and position corresponds to the touch control unit X11 between gap value VE0 and VE1 and is touch-control application point corresponding to the touch control unit X15 between gap value VE4 and VE5.
Please refer to Fig. 4.Fig. 4 is in one embodiment of the invention, a kind of process flow diagram of touch detection method 400.Touch detection method 400 can be applicable to as Fig. 1 in the contact panel 1 that illustrates.Touch detection method 400 comprises the following step.
In step 401, contact panel 1 is made to operate on originate mode.
In step 402, the touch control unit group of contact panel 1 (such as touch control unit row X1) is detected, sequentially to obtain initial scout magnitude of voltage, such as, correspond to the initial scout magnitude of voltage Vi1-Vi5 of the touch control unit X11-X15 in the touch control unit row X1 shown in Fig. 2 A.
In step 403, each two adjacent initial scout magnitudes of voltage are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain initial differential magnitude of voltage, such as aforesaid initial differential magnitude of voltage Vid1-Vid4.
In step 404, make initial differential magnitude of voltage Vid1-Vid4 as one of touch control unit group group reference value Vb1-Vb4.
In step 405, contact panel 1 is made to operate on operating mode.
In step 406, touch control unit group is detected, sequentially to obtain detection threshold, such as aforesaid detection threshold Vs1-Vs5.
In step 407, each two adjacent detection thresholds are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain differential voltage value, such as aforesaid differential voltage value Vd1-Vd4.
In step 408, differential voltage value is sequentially subtracted each other with reference value, in order to do sequentially producing gap value, to judge whether comprise touch-control application point in touch control unit group according to the positive and negative ordinal relation of gap value.
In step 409, judge whether touch control unit group comprises touch-control and remove a little according to the positive and negative ordinal relation of gap value further.
When touch control unit group comprise touch-control to remove some time, in step 410, reference value is updated to differential voltage value.Flow process also gets back to step 405 further, makes contact panel 1 operate on operating mode, with lasting detecting touch-control.
And when touch control unit group do not comprise touch-control to remove some time, in step 411, retain reference value.Flow process also gets back to step 405 further, makes contact panel 1 operate on operating mode, with lasting detecting touch-control.
Although the present invention discloses as above with aforementioned preferred embodiment; so itself and be not used to limit the present invention; anyly have the knack of alike those skilled in the art; without departing from the spirit and scope of the invention; when doing a little change and retouching, the scope of patent protection of therefore the present invention must be as the criterion depending on the claim person of defining that this instructions is appended.
Claims (12)
1. a touch detection method, be applied in a contact panel, wherein this contact panel comprises a touch control unit array, and the plural touch control unit system in this touch control unit array is arranged as the capable and plural touch control unit row of plural touch control unit, and this touch detection method comprises:
In an originate mode, one of this contact panel touch control unit group is detected, sequentially to obtain plural initial scout magnitude of voltage, and each two adjacent these initial scout magnitudes of voltage are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain plural initial differential magnitude of voltage, wherein this touch control unit group corresponds to capable and these touch control units of these touch control units and arranges one of them;
Make these initial differential magnitudes of voltage as one of this touch control unit group group reference value;
In an operating mode, this touch control unit group is detected, sequentially to obtain plural detection threshold, and each two adjacent these detection thresholds are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain complex difference component voltage value; And
These differential voltage values are sequentially subtracted each other with this group reference value, in order to do sequentially producing plural gap value, to judge according to the positive and negative ordinal relation of one of these gap value whether this touch control unit group comprises at least one touch-control application point and at least one touch-control removes a little, and in this touch control unit group comprise this touch-control to remove some time, this group reference value is updated to this group differential voltage value.
2. touch detection method as claimed in claim 1, wherein when these touch control units one of them not by touch-control time, it one of to comprise corresponding detection threshold system and is equivalent to a reference value, and in being less than this reference value during touch-control.
3. touch detection method as claimed in claim 2, more comprises:
When these gap value comprise one at front negative and when the order of rear positive number, judge in this touch control unit group, position corresponds to this be respectively this touch-control application point at front negative and these touch control units at least one be somebody's turn to do between rear negative.
4. touch detection method as claimed in claim 2, more comprises:
When these gap value do not occur this front positive number and should after the order of negative, then retain this original group reference value.
5. touch detection method as claimed in claim 4, more comprises:
When these gap value do not occur this front positive number and should after the order of negative, then retain this original group reference value.
6. touch detection method as claimed in claim 2, wherein this touch control unit group more comprises the virtual touch control unit of the virtual touch control unit in front end and a rear end, be positioned at the two ends of the plural touch control unit that this touch control unit group comprises, and these initial scout magnitudes of voltage corresponding to the virtual touch control unit of the virtual touch control unit in this front end and this rear end and these detection thresholds are this reference value.
7. a contact panel, comprises:
One touch control unit array, the plural touch control unit system in this touch control unit array is arranged as the capable and plural touch control unit row of plural touch control unit;
One processing module, is coupled to this touch control unit array; And
One has plural instruction that computing machine can perform stores internal memory wherein, and being coupled to this processing module, when these instructions are performed by this processing module, is carry out following action:
In an originate mode, one of this contact panel touch control unit group is detected, sequentially to obtain plural initial scout magnitude of voltage, and each two adjacent these initial scout magnitudes of voltage are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain plural initial differential magnitude of voltage, wherein this touch control unit group corresponds to capable and these touch control units of these touch control units and arranges one of them;
Make these initial differential magnitudes of voltage in organizing reference value as one of this touch control unit group;
Operating mode makes this touch control unit group detect one of after this originate mode, sequentially to obtain plural detection threshold, and each two adjacent these detection thresholds are sequentially carried out Difference Calculation by latter one to previous subtracting each other, to obtain complex difference component voltage value; And
These differential voltage values are sequentially subtracted each other with this group reference value, in order to do sequentially producing plural gap value, to judge according to the positive and negative ordinal relation of one of these gap value whether this touch control unit group comprises at least one touch-control application point and at least one touch-control removes a little, with comprise in this touch control unit group this touch-control to remove some time, this group reference value is updated to this group differential voltage value.
8. contact panel as claimed in claim 7, wherein when these touch control units one of them not by touch-control time, it one of to comprise corresponding detection threshold system and is equivalent to a reference value, and in being less than this reference value during touch-control.
9. contact panel as claimed in claim 8, wherein when these gap value comprise one at front negative and when the order of rear positive number, this processing module judges in this touch control unit group, and position corresponds to this be respectively this touch-control application point at front negative and these touch control units at least one be somebody's turn to do between rear negative.
10. contact panel as claimed in claim 8, wherein when these gap value comprise one at front positive number and when the order of rear negative, this processing module judges that comprising this touch-control in this touch control unit group removes a little.
11. contact panels as claimed in claim 10, wherein when these gap value do not occur this front positive number and should after the order of negative, this processing module retains this original group reference value.
12. contact panels as claimed in claim 8, wherein this touch control unit group more comprises the virtual touch control unit of the virtual touch control unit in front end and a rear end, be positioned at the two ends of the plural touch control unit that this touch control unit group comprises, and these initial scout magnitudes of voltage corresponding to the virtual touch control unit of the virtual touch control unit in this front end and this rear end and these detection thresholds are this reference value.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410502052.9A CN105511655B (en) | 2014-09-26 | 2014-09-26 | Touch panel and its method for detecting |
| TW104100312A TWI543033B (en) | 2014-09-26 | 2015-01-06 | Touch panel and touch detection method of the same |
| TW104200137U TWM505646U (en) | 2014-09-26 | 2015-01-06 | Touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410502052.9A CN105511655B (en) | 2014-09-26 | 2014-09-26 | Touch panel and its method for detecting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105511655A true CN105511655A (en) | 2016-04-20 |
| CN105511655B CN105511655B (en) | 2018-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410502052.9A Expired - Fee Related CN105511655B (en) | 2014-09-26 | 2014-09-26 | Touch panel and its method for detecting |
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| Country | Link |
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| CN (1) | CN105511655B (en) |
| TW (2) | TWI543033B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101893972A (en) * | 2009-04-03 | 2010-11-24 | 统宝光电股份有限公司 | Sensing method of a capacitance type touch control screen and driving circuit |
| US20110074726A1 (en) * | 2009-09-25 | 2011-03-31 | Ite Tech. Inc. | Touch panel and touching point detection method thereof |
| CN102043549A (en) * | 2009-10-15 | 2011-05-04 | 联阳半导体股份有限公司 | Touch panel and touch point sensing method |
| CN102109937A (en) * | 2009-12-24 | 2011-06-29 | 联阳半导体股份有限公司 | Locating device and locating method for touch device |
| CN102193693A (en) * | 2010-03-17 | 2011-09-21 | 群康科技(深圳)有限公司 | Touch panel and differential identification method thereof |
| CN102968217A (en) * | 2012-12-07 | 2013-03-13 | 深圳市汇顶科技股份有限公司 | Reference updating method and system for touch screen as well as touch terminal |
-
2014
- 2014-09-26 CN CN201410502052.9A patent/CN105511655B/en not_active Expired - Fee Related
-
2015
- 2015-01-06 TW TW104100312A patent/TWI543033B/en not_active IP Right Cessation
- 2015-01-06 TW TW104200137U patent/TWM505646U/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893972A (en) * | 2009-04-03 | 2010-11-24 | 统宝光电股份有限公司 | Sensing method of a capacitance type touch control screen and driving circuit |
| US20110074726A1 (en) * | 2009-09-25 | 2011-03-31 | Ite Tech. Inc. | Touch panel and touching point detection method thereof |
| CN102043549A (en) * | 2009-10-15 | 2011-05-04 | 联阳半导体股份有限公司 | Touch panel and touch point sensing method |
| CN102109937A (en) * | 2009-12-24 | 2011-06-29 | 联阳半导体股份有限公司 | Locating device and locating method for touch device |
| CN102193693A (en) * | 2010-03-17 | 2011-09-21 | 群康科技(深圳)有限公司 | Touch panel and differential identification method thereof |
| CN102968217A (en) * | 2012-12-07 | 2013-03-13 | 深圳市汇顶科技股份有限公司 | Reference updating method and system for touch screen as well as touch terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105511655B (en) | 2018-08-07 |
| TWM505646U (en) | 2015-07-21 |
| TWI543033B (en) | 2016-07-21 |
| TW201612700A (en) | 2016-04-01 |
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