CN103914180A - Touch screen, method for locating touch point in touch screen and driving device - Google Patents
Touch screen, method for locating touch point in touch screen and driving device Download PDFInfo
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- CN103914180A CN103914180A CN201310749729.4A CN201310749729A CN103914180A CN 103914180 A CN103914180 A CN 103914180A CN 201310749729 A CN201310749729 A CN 201310749729A CN 103914180 A CN103914180 A CN 103914180A
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Abstract
The invention discloses a touch screen, a method for locating a touch point in the touch screen and a driving device. The method includes that driving signals are loaded for touch electrodes in the first direction simultaneously, induction signals output by touch electrodes in the second direction are collected at the same time, and at least one touch electrode in the second direction meeting a first touching condition is determined; then driving signals are loaded for the determined at least one touch electrode in the second direction sequentially, when the driving signals are loaded for the touch electrodes in the second direction, induction signals output by the touch electrodes in the first direction are collected, touch electrodes in the first direction meeting a second touch condition are determined, and intersecting positions of the determined touch electrodes in the first direction and the touch electrode in the second direction loaded with driving signals are located as touch point positions. Touch point locating accuracy is improved, meanwhile, driving loading time is saved, data processing amount is reduced, and touch point locating speed is improved.
Description
Technical field
The present invention relates to display technique field, relate in particular to a kind of touch-screen and in this touch-screen, locate method and the drive unit of touch point.
Background technology
General touch display screen adopts multilayer indium tin oxide (Indium Tin Oxides, ITO) as sensing electrode, form the arrangement mode with horizontal signal wire (X-axis), longitudinal signal line (Y-axis) cross-distribution, the electric capacity at each crossover location place forms capacitance matrix.In signal scanning process, using horizontal signal wire as drive signal line, be followed successively by each horizontal signal wire load driver signal (described driving signal can be driving voltage) by the drive unit (IC) of touch-screen, when on a certain horizontal signal wire when load driver signal, each longitudinal signal line detects respectively the capacitance of the horizontal signal wire crossover location place electric capacity of self and load driver signal as induced signal line, and the capacitance detecting is transferred to described drive unit, by drive unit, the capacitance receiving and the electric capacity reference value prestoring are compared again, obtain the variable quantity of the horizontal signal wire crossover location place capacitance of each longitudinal signal line and load driver signal.If the variable quantity of the horizontal signal wire crossover location place capacitance of a certain longitudinal signal line and load driver signal is greater than threshold value, the horizontal signal wire crossover location place of this longitudinal signal line and load driver signal is the position that touch point occurs.
For example: as shown in Figure 1, suppose that touch point is A, B, the C touch point in Fig. 1.Drive unit is followed successively by each drive signal line TX1, TX2, TX3 load driver signal (the first frame is TX1 load driver signal, and the second frame is TX2 load driver signal, and the 3rd frame is TX3 load driver signal).
In the time of the first frame (be now TX1 load driver signal, other drive signal line does not load), each induced signal line RX1, RX2, RX3 detect the capacitance at self and TX1 crossover location place simultaneously, and are transferred to drive unit.The capacitance that drive unit utilization receives and electric capacity reference value compare, determine that the capacitance change between RX1 and capacitance and the electric capacity reference value of RX3 transmission is greater than threshold value, can determine that the position that touch point occurs lays respectively at: the crossover location B point of crossover location A point, TX1 and the RX3 of TX1 and RX1.
In the time of the second frame, (be now TX2 load driver signal, other drive signal line does not load), similar with the processing procedure of the first frame, and induced signal line RX1, RX2, RX3 detect the capacitance at self and TX2 crossover location place simultaneously, and are transferred to drive unit.The capacitance that drive unit utilization receives and electric capacity reference value compare, determine that the capacitance change between the capacitance and the electric capacity reference value that receive is all not more than threshold value (capacitance in fact now receiving and electric capacity reference value are very approaching), can determine at the crossover location place of TX2 and RX1, RX2, RX3 and not touch.
When the 3rd frame, (be now TX3 load driver signal, other drive signal line does not load), similar with the processing procedure of the first frame and the second frame, can determine that the position that touch point occurs is positioned at: the crossover location C point of TX3 and RX1.
Description by above touch point locator meams is known, drive unit need to be each drive signal line load driver signal successively, so that induced signal line detects and the capacitance at the drive signal line crossover location place of current load driver signal, and then determine according to the situation of change of capacitance whether the drive signal line infall of induced signal line and current load driver signal touch has occurred by drive unit, take drive signal line as X bar, induced signal line is that Y bar is given an example, according to above-mentioned touch point locator meams, drive unit need to carry out the detection computations operation of X*Y time, because data processing amount is very large, reduce the locating speed of locating touch point in touch display screen.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of touch-screen and in this touch-screen, locates method and the drive unit of touch point, the large and slow problem of locating speed that causes of data processing amount when solving the touch point, location existing in prior art.
The embodiment of the present invention is by the following technical solutions:
In touch-screen, locate a method for touch point, described method comprises:
For each first direction touch-control electrode load driver signal simultaneously;
Gather the induced signal of each second direction touch-control electrode simultaneously, determine that at least one meets the second direction touch-control electrode of the first touch condition;
Be followed successively by the described second direction touch-control electrode load driver signal that meets the first touch condition;
In the time being the second direction touch-control electrode load driver signal of every satisfied first touch condition, also gather the induced signal of each first direction touch-control electrode simultaneously, determine that at least one meets the first direction touch-control electrode of the second touch condition;
Described second direction touch-control electrode and the described first direction touch-control electrode crossing position that meets the second touch condition that meets the first touch condition orientated the position that touch point occurs as.
The beneficial effect of the embodiment of the present invention is as follows:
A kind of touch-screen providing by the embodiment of the present invention and the method for locating touch point in this touch-screen and drive unit, for first direction touch-control electrode load driver signal simultaneously, gather the induced signal of second direction touch-control electrode output simultaneously, determine at least one second direction touch-control electrode that meets the first touch condition; Then, be followed successively by least one definite second direction touch-control electrode load driver signal, and in the time being every second direction touch-control electrode load driver signal, gather the induced signal of first direction touch-control electrode output, determine that meeting second touches the first direction touch-control electrode of condition, and respectively the crossover location place of the second direction touch-control electrode of definite first direction touch-control electrode and load driver signal is orientated as to the position that touch point occurs.Thereby, improve accuracy and the speed of location, touch point, meanwhile, save the time of load driver, reduce data processing amount.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is touch-screen ITO two-layer wiring sketch when touch point occurs in prior art;
A kind of method step process flow diagram of locating touch point in touch-screen that Fig. 2 provides for the embodiment of the present invention one;
Fig. 3 is touch-screen ITO two-layer wiring sketch when single touch point occurs in the embodiment of the present invention two;
Fig. 4 is touch-screen ITO two-layer wiring sketch when multiple touch points occurs in the embodiment of the present invention three;
Fig. 5 (a), Fig. 5 (b) are that the driving loading detects sequential chart for locating touch point in the embodiment of the present invention three;
The structural representation of the drive unit that Fig. 6 provides for the embodiment of the present invention four.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that, in existing touch-screen display structure, be generally the sweep trace load driver signal of horizontally set, and the sweep trace output induced signal longitudinally arranging, therefore, the sweep trace of horizontally set can be called to drive signal line, custom is designated as TX, the sweep trace longitudinally arranging is called to induced signal line, and custom is designated as RX.And in embodiments of the present invention, the sweep trace of horizontally set and the sweep trace longitudinally arranging can be multiplexing, that is: be horizontal scan line load driver signal at the first frame, longitudinal scanning line output induced signal; Be longitudinal scanning line load driver signal at the second frame, horizontal scan line output induced signal.
In embodiments of the present invention, by be first direction touch-control electrode load driver signal simultaneously, gather the induced signal of second direction touch-control electrode output simultaneously, determine at least one second direction touch-control electrode that meets the first touch condition; Then, be followed successively by least one definite second direction touch-control electrode load driver signal, and in the time being every second direction touch-control electrode load driver signal, gather the induced signal of first direction touch-control electrode output, determine that meeting second touches the first direction touch-control electrode of condition, and respectively the crossover location place of the second direction touch-control electrode of definite first direction touch-control electrode and load driver signal is orientated as to the position that touch point occurs.Compare and localization method of the prior art, improved the accuracy of location, touch point, meanwhile, saved the time of load driver, reduced data processing amount.
Describe the present invention by specific embodiment below, but the present invention is not limited to following examples.
Embodiment mono-:
As shown in Figure 2, be a kind of method step process flow diagram of locating touch point in touch-screen that the embodiment of the present invention one provides, specifically comprise the following steps:
Step 101: be each first direction touch-control electrode load driver signal simultaneously.
Preferably, in this step 101, phase place, the amplitude of the described driving signal simultaneously loading for each first direction touch-control electrode are identical.
Step 102: gather the induced signal of each second direction touch-control electrode simultaneously, determine that at least one meets the second direction touch-control electrode of the first touch condition.
Preferably, the induced signal of second direction touch-control electrode that the described second direction touch-control electrode that meets the first touch condition is collection and the difference of the first induced signal reference value are greater than the second direction touch-control electrode of threshold value.
The induced signal of exporting after first direction touch-control electrode drive due to a second direction touch-control electrode, it is not the induced signal set at crossover location place on this second direction touch-control electrode and all first direction touch-control electrodes, but the induced signal of this second direction touch-control electrode and a first direction touch-control electrode crossing position, and the induced signal at this crossover location place is intensity maximum in the induced signal at all crossover locations place.This be due to:
Occurring under situation about touching, in the time giving each first direction touch-control electrode load driver signal, second direction touch-control electrode will go respectively to respond to the size of each crossover location place induced signal on self touch-control electrode, if determine respectively multiple different numerical value (near touch point, or multiple touch points) induced signal, select wherein that conduct induction Output rusults of the numerical value maximum of induced signal of this second direction touch-control electrode, in fact, namely will approach the induced signal of position that touch point occurs most as this second direction touch-control electrode Output rusults.
Do not occurring under situation about touching, in the time giving each first direction touch-control electrode load driver signal, the size of each crossover location place induced signal on second direction touch-control electrode induction self touch-control electrode is all the same, therefore, as long as using this unique numerical value as this second direction touch-control electrode induction Output rusults.
So, in the follow-up description process of the present invention, be no matter second direction touch-control electrode as induced signal line or first direction touch-control electrode as induced signal line, the induced signal of its output is that induced signal of the signal intensity maximum on this induced signal line.Wherein, above involved all induced signals can be electric capacity, can be also electric currents, are specifically not construed as limiting, but need to select unified parameter.Because the electricity parameter such as electric capacity, electric current is very easy to be subject to external influence, therefore,, after collecting induced signal, need to compare with default reference value, in the case of the difference of induced signal and default reference value be greater than default threshold value, just can define to touch and occur.
Therefore, in this step 102, gather the induced signal of each second direction touch-control electrode simultaneously, and by poor to the induced signal of each second direction touch-control electrode and the first induced signal reference value, respectively the difference obtaining and default threshold value are compared, determine and meet the second direction touch-control electrode that difference is greater than default threshold value.It should be noted that, in the situation that having the generation of touch, in this step 102, can determine at least one second direction touch-control electrode, be equivalent to determine the second direction coordinate of touch point.
Step 103: be followed successively by the described second direction touch-control electrode load driver signal that meets the first touch condition.
Preferably, in this step 103, described in be followed successively by every to meet phase place, the amplitude of driving signal that the first second direction touch-control electrode that touches condition loads identical.
Step 104: in the time being the second direction touch-control electrode load driver signal of every satisfied first touch condition, also gather the induced signal of each first direction touch-control electrode simultaneously, determine that at least one meets the first direction touch-control electrode of the second touch condition.
Preferably, the induced signal of first direction touch-control electrode that the described first direction touch-control electrode that meets the second touch condition is collection and the difference of the second induced signal reference value are greater than the first direction touch-control electrode of threshold value.
Similar with step 102, in the time being the second direction touch-control electrode load driver signal of every satisfied first touch condition, gather the induced signal of each first direction touch-control electrode simultaneously, and by poor to the induced signal of each first direction touch-control electrode and the second induced signal reference value, respectively the difference obtaining and default threshold value are compared, determine and meet the first direction touch-control electrode that difference is greater than default threshold value.It should be noted that, in the situation that having the generation of touch, in this step 104, also can determine at least one first direction touch-control electrode, be equivalent to determine the first direction coordinate of touch point.
Step 105: described second direction touch-control electrode and the described first direction touch-control electrode crossing position that meets the second touch condition that meets the first touch condition orientated the position that touch point occurs as.
In said process, after determining the second direction touch-control electrode that meets the first touch condition, can only determine on this second direction touch-control electrode and have the generation of touch, still can not determine concrete touch location.And, if determine two above second direction touch-control electrodes, be while meeting the second direction touch-control electrode load driver signal of the first touch condition when simultaneously, gather the induced signal of first direction touch-control electrode simultaneously, finally also can only determine on some first direction touch-control electrode and have touch to occur.If only have a touch point, can accurately determine touch location, if but have more than two touch point, may determine and meet the first all crossover locations place that touches the second direction touch-control electrode of condition and the first direction touch-control electrode of satisfied the second touch condition as touch point, will cause and touch erroneous judgement.Therefore, above-mentioned steps 103 is taked the second direction touch-control electrode mode of load driver signal successively that meets the first touch condition to determining, and determines the first direction touch-control electrode that meets the second touch condition.
Therefore,, in this step 105, can directly orientate with the first direction touch-control electrode crossing position that meets the second touch condition the position that touch point occurs by meeting the first second direction touch-control electrode that touches condition as.
Preferably, in embodiments of the present invention, second coordinate axis at first coordinate axis at first direction touch-control electrode place and second direction touch-control electrode place forms rectangular coordinate system.
Below pass through two specific embodiments, and be described in detail in the method for locating touch point in touch-screen in conjunction with Figure of description.
Embodiment bis-:
As shown in Figure 3, the touch-screen ITO two-layer wiring sketch while generation for single touch point in the embodiment of the present invention two.Wherein, the touch-control electrode that first direction touch-control electrode is horizontal direction, represents with X, is respectively X1, X2, X3; Second direction touch-control electrode is for Whom known the touch-control electrode of direction, represents with Y, is respectively Y1, Y2, Y3; And form point 11～33 these 9 crossover location points.Below take time of a frame as each first direction touch-control electrode with second direction touch-control electrode conversion load driver signal.
As shown in Figure 3, touch while generation if having, can determine in the following manner the position that touch point occurs:
First, in the first frame, be, the first touch-control electrode X1, X2, X3 load driver signal simultaneously, simultaneously, gather the second touch-control electrode Y1, induced signal y1, the y2 of Y2, Y3, y3, wherein, y1, y2, y3 are respectively the induced signal of the second touch-control electrode Y1, the upper signal intensity maximum of Y2, Y3.If the first induced signal reference value is y, respectively by poor to y1, y2, y3 and y, the difference obtaining is compared with default threshold value respectively, determine and only have the difference of y2 and y to be greater than default threshold value, so, just can determine that meeting the first second direction touch-control electrode that touches condition is the second direction touch-control electrode Y2 that this induced signal of y2 is corresponding.
Then, in the second frame, for definite second direction touch-control electrode Y2 load driver signal, gather the first touch-control electrode X1, induced signal x1, the x2 of X2, X3, x3 simultaneously, if the second induced signal reference value is x, respectively by poor to x1, x2, x3 and x, the difference obtaining is compared with default threshold value respectively, determine and only have the difference of x2 and x to be greater than default threshold value, so, just can determine that meeting the second first direction touch-control electrode that touches condition is the first direction touch-control electrode X2 that this induced signal of x2 is corresponding.
Finally, orientate the crossover location place of second direction touch-control electrode Y2 and first direction touch-control electrode X2 as position that touch point occurs, put 22 for touch point.
Embodiment tri-:
As shown in Figure 4, the touch-screen ITO two-layer wiring sketch while generation for multiple touch points in the embodiment of the present invention three.Wherein, the touch-control electrode that first direction touch-control electrode is horizontal direction, represents with X, is respectively the first touch-control electrode X1, X2, X3, X4; The touch-control electrode that second direction touch-control electrode is vertical direction, represents with Y, is respectively Y1, Y2, Y3, Y4; And form point 11～44 these 16 crossover location points.Below take time of a frame as each first direction touch-control electrode with second direction touch-control electrode conversion load driver signal.
As shown in Figure 4, touch while generation if having, can determine in the following manner the position that touch point occurs:
First, in the first frame, it is the first touch-control electrode X1, X2, X3, X4 load driver signal simultaneously, simultaneously, gather the second touch-control electrode Y1, Y2, Y3, induced signal y1, the y2 of Y4, y3, y4, wherein, y1, y2, y3, y4 are respectively the induced signal of the second touch-control electrode Y1, the upper signal intensity maximum of Y2, Y3Y4.If the first induced signal reference value is y, respectively by poor to y1, y2, y3, y4 and y, the difference obtaining is compared with default threshold value respectively, determine the difference of y2 and y and the difference of y4 and y is all greater than default threshold value, so, just can determine that meeting the first second direction touch-control electrode that touches condition is second direction touch-control electrode Y2 and second direction touch-control electrode Y4.
Then, in the second frame, be followed successively by definite second direction touch-control electrode Y2, Y4 load driver signal, and determine touch point respectively.Particularly:
The first step: can be first second direction touch-control electrode Y2 load driver signal, gather the first touch-control electrode X1, X2, X3, induced signal x1, the x2 of X4, x3, x4 simultaneously.Owing to being only now second direction touch-control electrode Y2 load driver signal, the induced signal collecting from induced signal line so can only be the induced signal of electricity 12, point 22, point 32, point 42 these four crossover locations.If the second induced signal reference value is x, respectively by poor to x1, x2, x3, x4 and x, the difference obtaining is compared with default threshold value respectively, determine the difference of x2 and x and the difference of x4 and x is all greater than default threshold value, so, just can determine that meeting the second first direction touch-control electrode that touches condition is first direction touch-control electrode X2 and first direction touch-control electrode X4.And orientate the point 42 at the crossover location place of the point 22 at the crossover location place of first direction touch-control electrode X2 and second direction touch-control electrode Y2 and first direction touch-control electrode X4 and second direction touch-control electrode Y2 as position that touch point occurs.
Second step: be then second direction touch-control electrode Y4 load driver signal, gather induced signal x1, x2, x3, the x4 of X1, X2, X3, X4 simultaneously.Owing to being only now second direction touch-control electrode Y4 load driver signal, the induced signal collecting from induced signal line so can only be the induced signal of electricity 14, point 24, point 34, point 44 these four crossover locations.If the second induced signal reference value is x, respectively by poor to x1, x2, x3, x4 and x, the difference obtaining is compared with default threshold value respectively, the difference of determining x2 and x is greater than default threshold value, so, just can determine that meeting the second first direction touch-control electrode that touches condition is first direction touch-control electrode X2.And orientate the point 24 at the crossover location place of first direction touch-control electrode X2 and second direction touch-control electrode Y4 as position that touch point occurs.
Thus, can determine, the position that touch point occurs is point 22, point 24 and point 42 these three crossover locations.
In addition the driving signal loading in the scheme of the embodiment of the present invention four, and the induced signal of collection can be as Fig. 5 (a) and the sequential chart 5(b).Below in conjunction with the touch-screen ITO two-layer wiring sketch shown in Fig. 4, and the scheme of embodiment tetra-is described in detail.
In the first frame, be the first touch-control electrode X1, X2, X3, X4 load driver signal simultaneously, i.e. corresponding diagram 5(a) the middle high level loading, simultaneously, the second touch-control electrode Y1, Y2, Y3, Y4 export induced signal, through after detecting, determine that Y2 and Y4 meet the first touch condition;
In the second frame, be followed successively by Y2 and Y4 load driver signal, load respectively high level.Wherein, in loading high level for Y2, the first touch-control electrode X1, X2, X3, X4 export induced signal, through after detecting, determine that X2 and X4 meet the second touch condition; In loading high level for Y4, the first touch-control electrode X1, X2, X3, X4 export induced signal, through after detecting, determine that X4 meets the second touch condition.
It should be noted that, the first related induced signal reference value can be set as identical numerical value ideally with the second induced signal reference value in embodiments of the present invention, in the time touching, and the numerical value of the induced signal collecting; But, due to the impact of connecting up in touch-screen preparation process, the first induced signal reference value can be set as to different numerical value from the second induced signal reference value.
The method of locating touch point in this touch-screen providing based on the above embodiment of the present invention, the embodiment of the present invention four provides a kind of drive unit, below introduces in detail this drive unit.
As shown in Figure 6, the structural representation of the drive unit providing for the embodiment of the present invention four, specifically comprises following functions module:
Signal loading module 201, is used to each first direction touch-control electrode load driver signal simultaneously, and, in the time receiving the indicator signal of described the first locating module, be followed successively by the described second direction touch-control electrode load driver signal that meets the first touch condition.
Preferably, described signal loading module 201 for phase place, the amplitude of the driving signal that each first direction touch-control electrode loads simultaneously identical, it is identical that described signal loading module 201 is followed successively by every phase place, amplitude that meets the driving signal that the first second direction touch-control electrode that touches condition loads.
Acquisition module 202, for be that each first direction touch-control electrode while is when load driver signal in described signal loading module 201, gather the induced signal of each second direction touch-control electrode simultaneously, and, in the time that described signal loading module 201 is followed successively by the second direction touch-control electrode load driver signal of every satisfied first touch condition, gather the induced signal of each first direction touch-control electrode simultaneously.
The first locating module 203, be used for the induced signal of each the second direction touch-control electrode collecting according to described acquisition module 202, determine that at least one meets after the second direction touch-control electrode of the first touch condition, send indicator signal to described signal loading module 201.
Preferably, the induced signal of second direction touch-control electrode that the described second direction touch-control electrode that meets the first touch condition is collection and the difference of the first induced signal reference value are greater than the second direction touch-control electrode of threshold value.
The second locating module 204, for each first direction touch-control electrode collecting according to described acquisition module 202 induced signal, determine that at least one satisfied second touches the first direction touch-control electrode of condition, orientate described second direction touch-control electrode and the described first direction touch-control electrode crossing position that meets the second touch condition that meets the first touch condition as position that touch point occurs.
Preferably, the induced signal of first direction touch-control electrode that the described first direction touch-control electrode that meets the second touch condition is collection and the difference of the second induced signal reference value are greater than the first direction touch-control electrode of threshold value.
Embodiment five:
The present invention also provides a kind of touch-screen, comprise many first direction touch-control electrodes, respectively with many second direction touch-control electrodes of first direction touch-control electrode crossing every described and embodiment tetra-in the drive unit introduced.
And, in this touch-screen, can utilize the touch point localization method providing in the embodiment of the present invention, in the situation that having the generation of touch, the touch point in described touch-screen is positioned.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the modification of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. a method of locating touch point in touch-screen, is characterized in that, described method comprises:
For each first direction touch-control electrode load driver signal simultaneously;
Gather the induced signal of each second direction touch-control electrode simultaneously, determine that at least one meets the second direction touch-control electrode of the first touch condition;
Be followed successively by the described second direction touch-control electrode load driver signal that meets the first touch condition;
In the time being the second direction touch-control electrode load driver signal of every satisfied first touch condition, also gather the induced signal of each first direction touch-control electrode simultaneously, determine that at least one meets the first direction touch-control electrode of the second touch condition;
Described second direction touch-control electrode and the described first direction touch-control electrode crossing position that meets the second touch condition that meets the first touch condition orientated the position that touch point occurs as.
2. the method for claim 1, is characterized in that, the induced signal of second direction touch-control electrode that the described second direction touch-control electrode that meets the first touch condition is collection and the difference of the first induced signal reference value are greater than the second direction touch-control electrode of threshold value.
3. the method for claim 1, is characterized in that, the induced signal of first direction touch-control electrode that the described first direction touch-control electrode that meets the second touch condition is collection and the difference of the second induced signal reference value are greater than the first direction touch-control electrode of threshold value.
4. the method for claim 1, is characterized in that, second coordinate axis at first coordinate axis at described first direction touch-control electrode place and described second direction touch-control electrode place forms rectangular coordinate system.
5. the method for claim 1, it is characterized in that, phase place, the amplitude of the described driving signal simultaneously loading for each first direction touch-control electrode are identical, described in to be followed successively by every phase place, amplitude that meets the driving signal that the first second direction touch-control electrode that touches condition loads identical.
6. a drive unit, is characterized in that, comprises signal loading module, acquisition module, the first locating module and the second locating module, wherein:
Signal loading module, is used to each first direction touch-control electrode load driver signal simultaneously, and, in the time receiving the indicator signal of described the first locating module, be followed successively by the described second direction touch-control electrode load driver signal that meets the first touch condition;
Acquisition module, for being that each first direction touch-control electrode is simultaneously when load driver signal in described signal loading module, gather the induced signal of each second direction touch-control electrode simultaneously, and, in the time that described signal loading module is followed successively by the second direction touch-control electrode load driver signal of every satisfied first touch condition, gather the induced signal of each first direction touch-control electrode simultaneously;
The first locating module, for the induced signal of each second direction touch-control electrode collecting according to described acquisition module, determines that at least one meets first and touch after the second direction touch-control electrode of condition, sends indicator signal to described signal loading module;
The second locating module, for each first direction touch-control electrode collecting according to described acquisition module induced signal, determine that at least one satisfied second touches the first direction touch-control electrode of condition, orientate described second direction touch-control electrode and the described first direction touch-control electrode crossing position that meets the second touch condition that meets the first touch condition as position that touch point occurs.
7. device as claimed in claim 6, is characterized in that, the induced signal of second direction touch-control electrode that the described second direction touch-control electrode that meets the first touch condition is collection and the difference of the first induced signal reference value are greater than the second direction touch-control electrode of threshold value.
8. device as claimed in claim 6, is characterized in that, the induced signal of first direction touch-control electrode that the described first direction touch-control electrode that meets the second touch condition is collection and the difference of the second induced signal reference value are greater than the first direction touch-control electrode of threshold value.
9. device as claimed in claim 6, it is characterized in that, described signal loading module is that phase place, the amplitude of the driving signal that simultaneously loads of each first direction touch-control electrode is identical, and it is identical that described signal loading module is followed successively by every phase place, amplitude that meets the driving signal that the first second direction touch-control electrode that touches condition loads.
10. a touch-screen, is characterized in that, comprise many first direction touch-control electrodes, respectively with many second direction touch-control electrodes and the drive unit as claimed in claim 7 of first direction touch-control electrode crossing every described.
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| CN201310749729.4A CN103914180B (en) | 2013-12-30 | 2013-12-30 | A kind of touch screen and position method and the driving means of touch point in this touch screen |
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| CN201310749729.4A CN103914180B (en) | 2013-12-30 | 2013-12-30 | A kind of touch screen and position method and the driving means of touch point in this touch screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104699339A (en) * | 2015-03-18 | 2015-06-10 | 深圳市华星光电技术有限公司 | Touch signal scanning method |
| WO2019023883A1 (en) * | 2017-07-31 | 2019-02-07 | 深圳市汇顶科技股份有限公司 | Method and device for determining reference for touchscreen, touchscreen, and electronic terminal |
| CN105760016B (en) * | 2016-02-05 | 2019-04-05 | 厦门天马微电子有限公司 | Touch panel and its driving method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634917B (en) * | 2008-07-21 | 2013-04-24 | 智点科技（深圳）有限公司 | Touch flat-panel display |
| US8723825B2 (en) * | 2009-07-28 | 2014-05-13 | Cypress Semiconductor Corporation | Predictive touch surface scanning |
| US20130015906A1 (en) * | 2011-07-13 | 2013-01-17 | Silicon Integrated Systems Corp. | Touch Panel Device |
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- 2013-12-30 CN CN201310749729.4A patent/CN103914180B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104699339A (en) * | 2015-03-18 | 2015-06-10 | 深圳市华星光电技术有限公司 | Touch signal scanning method |
| CN105760016B (en) * | 2016-02-05 | 2019-04-05 | 厦门天马微电子有限公司 | Touch panel and its driving method |
| WO2019023883A1 (en) * | 2017-07-31 | 2019-02-07 | 深圳市汇顶科技股份有限公司 | Method and device for determining reference for touchscreen, touchscreen, and electronic terminal |
| US10725584B2 (en) | 2017-07-31 | 2020-07-28 | Shenzhen GOODIX Technology Co., Ltd. | Method and apparatus for determining reference value, and electronic terminal thereof |
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| CN103914180B (en) | 2017-01-04 |
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