CN102902438B - Touch detecting method, touch screen detection device and contactor control device - Google Patents

Touch detecting method, touch screen detection device and contactor control device Download PDF

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Publication number
CN102902438B
CN102902438B CN201110459473.4A CN201110459473A CN102902438B CN 102902438 B CN102902438 B CN 102902438B CN 201110459473 A CN201110459473 A CN 201110459473A CN 102902438 B CN102902438 B CN 102902438B
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electrode
sensing unit
capacitance
self
touch
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CN102902438A (en
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李振刚
黄臣
杨云
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BYD Semiconductor Co Ltd
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BYD Co Ltd
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Priority to CN201110459473.4A priority Critical patent/CN102902438B/en
Priority to TW101214202U priority patent/TWM454578U/en
Priority to TW101126426A priority patent/TWI505163B/en
Priority to PCT/CN2012/079208 priority patent/WO2013013629A1/en
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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
    • 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
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • 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
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Position Input By Displaying (AREA)
  • Electronic Switches (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The present invention proposes a kind of touch detecting method, touch screen detection device and contactor control device. Contactor control device includes: substrate; Multiple disjoint sensing units, the plurality of sensing unit is formed on described substrate, and the plurality of sensing unit each have the first electrode and the second electrode that are oppositely arranged; With touch screen control chip. The embodiment of the present invention can also be effectively improved the to-noise ratio of circuit, reduces circuit noise, improves the sensing linearity.

Description

Touch detecting method, touch screen detection device and contactor control device
Technical field
The present invention relates to electronic device design and manufacturing technology field, particularly to a kind of touch detecting method, touch screen and contactor control device.
Background technology
The range of application of current touch screen is from conventional ATM (automatic teller machine), minority's business markets such as industrial computer, it is rapidly spread to mobile phone, PDA (personal digital assistant), GPS (global positioning system), PMP (MP3, MP4 etc.), even the mass consumption electronic applications such as panel computer. Having for touch screen that touch control operation is simple, convenient, the advantage of hommization, therefore touch screen is expected to become the best interface of human-computer interaction and be widely applied in a portable device rapidly.
Capacitance touch screen is typically divided into self-capacitance and mutual capacitance two class. As it is shown in figure 1, be the structure chart of a kind of self-capacitance touch screen common in prior art. This self-capacitance touch screen mainly has the diamond structure sensing unit 100 ' and 200 ' of bilayer, its Cleaning Principle is that X-axis and Y-axis are scanned respectively, if be detected that the capacitance variations in certain cross point is beyond preset range, then by the cross point of this row and column as touch coordinate. Although the linearity of this self-capacitance touch screen is better, but often there's something fishy, and point occurs, it is difficult to realize multiple point touching. Additionally, due to employing bilayer screen, also result in structure and cost is significantly increased, and diamond structure there will be coordinate drift when capacitance change is only small, is affected greatly by external interference.
As shown in Figure 2 a, for the structure chart of another kind of self-capacitance touch screen common in prior art. This self-capacitance touch screen adopts triangular pattern screen structure. This self-capacitance touch screen includes substrate 300 ', is arranged on multiple electrodes 500 ' that the multiple triangle sensing units 400 ' on substrate 300 ' are connected with each triangle sensing unit 400 '. As shown in Figure 2 b, for the Cleaning Principle of triangle self-capacitance touch screen. As it can be seen, ellipse representation finger, S1, S2 represent finger and the contact area of two triangle sensing units. False coordinate initial point is in the lower left corner, then abscissa X=S2/ (S1+S2) * P, wherein, P is resolution. When finger moves right, it not linear increase due to S2, so X-coordinate exists a deviation. From above-mentioned principle it can be seen that current triangle sensing unit is single-ended detection, namely only from an angle detecting, then pass through algorithm and calculate the coordinate of both direction. Although this self-capacitance touch screen structure is more simple, but not having the capacitive sensing for screen and be optimized, capacitance change is little, thus causing that signal to noise ratio is inadequate. Additionally, due to this sensing unit is triangle, when finger transverse shifting, area is not linear increase, and therefore the linearity is poor, result in coordinate calculating and offsets, and the linearity is good not.
Additionally, this capacitive sensing unit output capacitance variable quantity is only small, reach flying method level, the existence of its cable stray capacitance, measuring circuit is had higher requirement. And, stray capacitance can change with factors impacts such as temperature, position, inner electric field and outer electric field distributions, and measured capacitance signal is even flooded in interference. Additionally, for monolayer electric capacity, owing to inductance capacitance can be formed serious interference by the impact of Vcom level signal, wherein, Vcom level signal is the level signal not stopping upset in order to prevent lcd screen liquid crystal aging.
Summary of the invention
The purpose of the present invention is intended at least solve one of above-mentioned technological deficiency, particularly solves or avoid the occurrence of the disadvantages mentioned above in existing self-capacitance touch screen.
Embodiment of the present invention first aspect proposes a kind of contactor control device, including: substrate, multiple sensing units, the plurality of sensing unit mutually disjoints, and the plurality of sensing unit is formed on described substrate, and the plurality of sensing unit each have the first electrode and the second electrode, with touch screen control chip, the first electrode and the second electrode that described touch screen control chip is each with the plurality of sensing unit respectively are connected, described touch screen control chip applies level signal to the first electrode and/or second electrode of the plurality of sensing unit, the self-capacitance charging that described level signal produces to described sensing unit when sensing unit is touched, and described touch screen control chip one or part in the plurality of sensing unit being detected are when being touched, calculate the proportionate relationship between the first resistance of the extremely described self-capacitance of the first electrode described in corresponding sensing unit and the second resistance of described second electrode extremely described self-capacitance, and determine touch location according to the proportionate relationship between described first resistance and described second resistance. embodiment of the present invention second aspect also proposed a kind of touch screen detection device, including: substrate, with multiple disjoint sensing units, the plurality of sensing unit is formed on described substrate, and the plurality of sensing unit each have the first electrode and the second electrode that are oppositely arranged, wherein, each first electrode and the second electrode are all connected with a pin of touch screen controller.
The embodiment of the present invention third aspect also proposed a kind of touch detecting method, comprise the following steps: apply level signal to the first electrode and/or second electrode of sensing unit, wherein, when described sensing unit is touched, the self-capacitance that described sensing unit is produced by described level signal is charged; Detect in the plurality of sensing unit one or whether part sensing unit is touched; If be detected that one or part are touched in the plurality of sensing unit, then calculate the first electrode described in corresponding sensing unit to the first resistance of described self-capacitance and described second electrode to the second resistance of described self-capacitance between proportionate relationship; And determine touch location according to the proportionate relationship between described first resistance and described second resistance.
Embodiment of the present invention fourth aspect also proposed a kind of portable electric appts, including contactor control device as above.
The embodiment of the present invention the 5th aspect also proposed a kind of portable electric appts, including contactor control device as above.
Sensing unit in the touch screen detection device of the embodiment of the present invention adopts double-end monitor, namely the two ends of sensing unit are respectively provided with electrode, and each electrode is all connected with the corresponding pin of touch screen control chip, the location to touch point can be realized when carrying out touching detection by sensing unit self.
What is more important, the present invention realizes the determination of touch location by calculating ratio between the first resistance and the second resistance, therefore relative to current rhombus or triangular design, due to when determining touch location, without calculating the size of self-capacitance, and the size of self-capacitance is without influence on the precision of touch location, thus improve certainty of measurement, improve the linearity.
The embodiment of the present invention proposes the detection method of a kind of novelty, by the existing self-capacitance charging that sensing unit is produced, determines touch location in a first direction further according to the proportionate relationship between the first resistance and the second resistance. Such as in one embodiment of the invention, proportionate relationship between first resistance and the second resistance can according to when to self-capacitance charge/discharge, and the proportionate relationship calculating carrying out detecting between the first detected value obtained and the second detected value from the first electrode and/or the second electrode obtains. Therefore the method relatively with existing self-capacitance detection method, it is possible to be greatly enhanced the to-noise ratio of accuracy of detection and circuit, and reduce circuit noise, improve the sensing linearity. Further, owing to the sensing unit being touched being charged or discharges in detection process, small area analysis can therefore wherein be produced, thus enhancing capacity of resisting disturbance.
Aspect and advantage that the present invention adds will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or that add aspect and advantage will be apparent from easy to understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the structure chart of a kind of self-capacitance touch screen common in prior art;
Fig. 2 a is the structure chart of another kind of self-capacitance touch screen common in prior art;
Fig. 2 b is the Cleaning Principle figure of another kind of self-capacitance touch screen common in prior art;
Fig. 3 is the Cleaning Principle schematic diagram of embodiment of the present invention contactor control device;
Fig. 4 is the touch detecting method flow chart of the embodiment of the present invention;
Fig. 5 is the contactor control device schematic diagram of one embodiment of the invention;
Fig. 6 a is the sensing unit structure chart of one embodiment of the invention;
Fig. 6 b is the sensing unit structure chart of one embodiment of the invention;
Fig. 7 a is another embodiment of the present invention Touch-screen testing equipment structure chart;
Fig. 7 b is another embodiment of the present invention touch screen detection device structure chart;
Fig. 8 is the sensing unit of embodiment of the present invention schematic diagram when being touched;
Fig. 9 a is further embodiment Touch-screen testing equipment structure chart of the present invention;
Fig. 9 b is further embodiment touch screen detection device structure chart of the present invention; And
Figure 10 is the sensing unit of embodiment of the present invention schematic diagram when being touched.
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish. The embodiment described below with reference to accompanying drawing is illustrative of, and is only used for explaining the present invention, and is not construed as limiting the claims.
The embodiment of the present invention proposes the self-capacitance detection mode of a kind of novelty, when sensing unit is touched, this sensing unit can be divided into two resistance by touch point, considers that the two resistance is assured that position on this sensing unit, the touch point while carrying out self-capacitance detection. As it is shown on figure 3, be the Cleaning Principle schematic diagram of embodiment of the present invention contactor control device. When finger touches this sensing unit, will be equivalent to this sensing unit is divided into two resistance, the resistance of the two resistance is relevant to the position of touch point. Such as, as described in Figure, time nearer with the first electrode when touch point, then resistance R1 is just less, and resistance R2 is just bigger; Anyway, time nearer with the second electrode when touch point, then resistance R1 is just relatively big, and resistance R2 is just less. Therefore, the present invention by being assured that position on this sensing unit, the touch point to the detection of resistance R1 and R2. In an embodiment of the present invention, resistance R1 and R2 can be detected in several ways, such as can pass through to detect in the first electrode and the current detection value of the second electrode, self-capacitance detected value, level signal detected value and change in electrical charge amount one or more, thus obtaining resistance R1 and R2 according to these detected values. It addition, in an embodiment of the present invention, detection can carry out (obtaining the first charging detected value and the second charging detected value) when charging, it is possible to carries out (obtaining the first discharge examination value and the second discharge examination value) when electric discharge. Additionally, the detection carried out when charging and discharging can adopt various ways. It should be understood that, charging, electric discharge or detection have at least a step that the first electrode and the second electrode are carried out, so can obtain two detected values of difference, i.e. the first detected value and the second detected value between reaction the first resistance and the second resistance. It is to say, need electric current through the first resistance and the second resistance when charging, electric discharge or detection, the first detected value and the second detected value that so detect can react the difference between the first resistance and the second resistance. In an embodiment of the present invention, it usually needs fill twice electricity (including the situation simultaneously to the first electrode and the second electrode charge) and twice detection. In certain embodiments, it is also possible to electric discharge can be performed twice at. All it is by twice charging and twice detection below in an example, repeats no more below in an example. At this it should be noted that perform twice at charging and twice detection is only a kind of scheme of the embodiment of the present invention, algorithm is relatively simple. But those skilled in the art increase charging and the number of times of detection also dependent on above-mentioned thought, such as can carry out three chargings and detection, calculating the first resistance according to primary charging detected value and secondary charging detected value afterwards, the charging detected value further according to primary charging detected value and third time calculates the second resistance.
Specifically, the present invention includes but not limited to that following several metering system detects:
1, first level signal is applied so that self-capacitance is charged (if this sensing unit is touched, will produce self-capacitance) to the first electrode of sensing unit and the second electrode; Then it is charged detecting to obtain the first charging detected value and the second charging detected value from the first electrode and/or the second electrode. In this embodiment, owing to charging carries out from the first electrode and the second electrode, therefore both can detect from the first electrode for detection, it is also possible to detect from the second electrode, or also can detect respectively from the first electrode and the second electrode. It can further be stated that, in this embodiment, the charging of the first electrode and the second electrode can be carried out simultaneously, also can carry out respectively, such as apply identical level signal so that self-capacitance to be charged at the first electrode and the second electrode simultaneously, in other embodiments, the level signal that the first electrode and the second electrode apply can also be different; Or, it is also possible to first apply a level signal on the first electrode, apply same level signal or another level signal afterwards more on the second electrode. Similarly, both can carry out when detecting, it is possible to carry out respectively simultaneously. In the examples below, charging, electric discharge or detection all can carry out simultaneously, or carry out respectively, do not repeat them here.
2, level signal is applied respectively for twice so that described self-capacitance is performed twice at charging to the first electrode of described sensing unit or the second electrode; Then it is charged detecting to obtain described first charging detected value and the second charging detected value from described first electrode and/or the second electrode after charging every time. In this embodiment, owing to charging carries out from the first electrode or the second electrode, therefore needing to detect respectively from the first electrode and the second electrode when detection, wherein, detection can carry out simultaneously, it is possible to carries out respectively. Additionally, in an embodiment of the present invention, it is also possible to perform twice at charging at the first electrode, and perform twice at detection from the first electrode, or, perform twice at charging from the second electrode, perform twice at detection at the second electrode. As long as, when charging for twice, respectively by another electrode ground connection or connect high resistant to change the state of another electrode. Such as when to the first electrode of sensing unit respectively twice apply level signal so that self-capacitance is performed twice at charging time, wherein, in twice charging once by described second electrode ground connection, described second electrode is connect as high resistant by another time; When to the second electrode of sensing unit respectively twice apply level signal so that self-capacitance is performed twice at charging time, in twice charging once by described first electrode ground connection, described first electrode is connect as high resistant by another time. Accordingly even when be carried out twice charging at the first electrode, change due to the second electrode condition, it also is able to perform twice at detection at the first electrode, to obtain the first detected value and the second detected value that can react proportionate relationship between the first resistance R1 and the second resistance R2. 3, level signal is applied so that self-capacitance to be charged to the first electrode of sensing unit and the second electrode; Then the first electrode and/or the second electrode ground connection are controlled so that self-capacitance to be discharged; Discharge examination is carried out to obtain described first discharge examination value and the second discharge examination value afterwards from the first electrode and/or the second electrode. In this embodiment, owing to self-capacitance charging being carried out from the first electrode and the second electrode, therefore electric discharge or detection just can carry out from the first electrode and/or the second electrode. Specifically, for instance simultaneously can apply level signal so that self-capacitance to be charged to the first electrode and the second electrode, or also can different time apply. When electric discharge twice electric discharge can all by the first electrode ground connection, or all by the second electrode ground connection.
4, level signal is applied so that self-capacitance to be charged to the first electrode of sensing unit or the second electrode; Then the first electrode and the second electrode ground connection are controlled respectively so that self-capacitance to be discharged; Discharge examination is carried out to obtain the first discharge examination value and the second discharge examination value respectively afterwards from the first electrode and/or the second electrode. In this embodiment, owing to self-capacitance electric discharge being carried out from the first electrode and the second electrode, therefore charging or detection just can carry out from the first electrode and/or the second electrode. In this embodiment, twice charging also can be used that the first electrode, and by the second electrode ground connection respectively or connect as high resistant. Similarly, twice charging also can be used that the second electrode, and by the first electrode ground connection respectively or connect as high resistant.
5, level signal is applied so that self-capacitance to be charged to the first electrode of sensing unit or the second electrode; Then control the first electrode or the second electrode ground connection respectively so that self-capacitance to be discharged, carry out discharge examination to obtain the first discharge examination value and the second discharge examination value from the first electrode and the second electrode respectively afterwards. In this embodiment, owing to self-capacitance detection being carried out from the first electrode and the second electrode, therefore charge or discharge just can carry out from the first electrode and/or the second electrode. In this embodiment, twice charging also can be used that the first electrode, and by the second electrode ground connection respectively or connect as high resistant. Similarly, twice charging also can be used that the second electrode, and by the first electrode ground connection respectively or connect as high resistant.
Or, on the basis of above-described embodiment, one-time detection can also be carried out to obtain the first charging detected value when charging, carry out second time detection when electric discharge to obtain the second discharge examination value, obtain the proportionate relationship between the first resistance and the second resistance further according to the first charging detected value and the second discharge examination value.
It should be noted that, in an embodiment of the present invention, the function of above-mentioned first electrode and the second electrode is identical, and the two can exchange, therefore in the above-described embodiments, both from the second electrode detection, electric current can also can be needed through the first resistance and this requirement of the second resistance as long as can meet when charging, electric discharge or detection from the first electrode detection.
It can be seen that above-mentioned charging and detection mode for the present invention have a variety of change in from the above, but the core of the present invention is exactly according to the relation between the first resistance and the second resistance, for instance proportionate relationship or other relations determine the position of touch point. Further, the relation between this first resistance and second resistance require over self-capacitance charging and/or electric discharge detect. If sensing unit is not touched, then would not produce self-capacitance with hands, therefore detect that the data of self-capacitance can be only small, it is unsatisfactory for the Rule of judgment touched, for this embodiment of the present invention can continually scan for, wait that finger just starts after touching sensing unit to calculate, do not repeat them here.
In an embodiment of the present invention, it is possible in the way of scanning, apply corresponding voltage to multiple sensing units successively, detection can also be sequentially carried out in the way of scanning when detection simultaneously.
It also should be noted that, above-mentioned detection mode is only some optimal ways of the present invention, and those skilled in the art also can be extended according to above-mentioned thought or revise, and these should be included within protection scope of the present invention.
As shown in Figure 4, for the touch detecting method flow chart of the embodiment of the present invention, this flow chart together illustrates in conjunction with the schematic diagram shown in Fig. 3. The method comprises the following steps:
Step S401, applies level signal to the two ends of sensing unit, namely applies level signal to the first electrode of sensing unit and/or the second electrode. In this embodiment, identical level signal can be applied to the first electrode and the second electrode, it is possible to apply different level signals. In other embodiments, it is possible to be only charged twice from the first electrode or the second electrode, or first time is from the first electrode charge second time from the second electrode charge, or first time is from the second electrode charge for the second time from the first electrode charge.
If now this sensing unit is touched by finger or other objects, then this sensing unit will produce self-capacitance C1 (with reference to Fig. 3), just can self-capacitance be charged by the level signal applied. In an embodiment of the present invention, by the charging to self-capacitance, it is possible to improve the accuracy of detection of self-capacitance.
If it should be noted that apply level signal to the two ends of sensing unit simultaneously, then need corresponding two capacitive detection module CTS to detect from the two ends of sensing unit simultaneously. And if respectively to the two ends time, then only needing a capacitive detection module CTS. In one embodiment of the invention, the first detected value and the second detected value can be from the first electrode and/or the second electrode detection to capacitance charge variation delta Q1 and �� Q2. By �� Q1 and �� Q2, self-capacitance variable namely detected to obtain, it is possible to calculate the ratio of R1 and R2, due to the regular linear relation of figure, then can calculate the position of the abscissa at place, touch point and the position at self-capacitance C1 place.
Step S402, detects from the two ends of sensing unit sensing unit, to obtain the first detected value and the second detected value. In this embodiment, detection can carry out when charging, it is possible to carries out when electric discharge. In the above example, the first detected value and the second detected value respectively �� Q1 and �� Q2. It is described for change in electrical charge amount for the first detected value and the second detected value below, but is able to other detected values of reaction resistance R1 and R2 relation, for instance level signal, electric current etc. also all can adopt. In an embodiment of the present invention, both can detect, it is also possible to detect respectively simultaneously.
In one embodiment of the invention, if carried out detecting simultaneously, then need two self-capacitance touch screen control chips the first electrode and the second electrode to be detected simultaneously.
In another embodiment of the present invention, may be used without a self-capacitance touch screen control chip to detect, with reference in step S401, after by the first electrode self-capacitance C1 being full of, namely self-capacitance C1 is detected by this self-capacitance touch screen control chip by the first electrode. Then through the second electrode, self-capacitance C2 being charged, then self-capacitance C1 is detected by this self-capacitance touch screen control chip again through the second electrode.
The phase place adopted when scanning this sensing unit due to self-capacitance touch screen control chip is all consistent with level signal, and electric charge time therefore for charging same self-capacitance C1 is equal to the inverse ratio of they resistance. It is assumed that be �� Q1 and �� Q2 from the first electrode of sensing unit and the second electrode respectively to the change in electrical charge amount that sensing unit detection obtains. In an embodiment of the present invention, self-capacitance touch screen control chip can be the self-capacitance touch screen control chip being currently known. In one embodiment of the invention, if adopt two self-capacitance touch screen control chips, then due to two self-capacitance touch screen control chips can the multiple device of technique, thus without increase chip overall power.
According to the first detected value and the second detected value, step S403, judges whether this sensing unit is touched. Specifically, in one embodiment of the invention, can by judging whether change in electrical charge amount �� Q1 and �� Q2 determines whether to be touched more than threshold value. Certainly, in other embodiments of the invention, other judgment modes also can be set, for instance judge that whether change in electrical charge amount �� Q1 and �� Q2 is less than threshold value, if it is less, judge that sensing unit is touched. Similarly, this threshold value is also required to the size according to touch screen and type, and the size of sensing unit is determined.
Step S404, if it is determined that this sensing unit is touched, then now calculates the proportionate relationship between the first resistance of the extremely described self-capacitance of the first electrode described in corresponding sensing unit and the second resistance of described second electrode extremely described self-capacitance further. And the touch location of touching object (such as finger) is determined according to the proportionate relationship between the first resistance and described second resistance. In an embodiment of the present invention, proportionate relationship between first resistance and described second resistance is according to when to self-capacitance charge/discharge, and the proportionate relationship calculating carrying out detecting between the first detected value obtained and the second detected value from the first electrode and/or the second electrode obtains. Ibid, the coordinate on the sensing unit at C1 place is �� Q2/ (�� Q1+ �� Q2).
In an embodiment of the present invention, if sensing unit is door shape sensing unit or L-shaped sensing unit, then just can determine that touch location on the touchscreen by the ratio between the first resistance and the second resistance, be described in detail below with reference to specific example. But in other embodiments of the invention, if sensing unit is rectangle sensing unit or snakelike (but see on the whole and be equivalent to rectangle) sensing unit, then step S404 can only calculate the touch location on touch screen first direction, and this first direction can be the length direction (horizontal direction of such as touch screen) of sensing unit.
If sensing unit is rectangle sensing unit or snakelike (but see on the whole and be equivalent to rectangle) sensing unit, then also needs to the position according to sensing unit and determine touch location in a second direction. In one embodiment of the invention, first direction is the length direction of sensing unit, and second direction is be perpendicular to the direction of sensing unit, and sensing unit is horizontally disposed with or is vertically arranged.
Specifically, centroid algorithm can be adopted to calculate touch point touch location in a second direction, below centroid algorithm is simply introduced.
In draw runner and touch pad are applied, be often necessary the essential spacing at concrete sensing unit determined above go out finger (or other capacitive object) position. Finger touch panel on draw runner or touch pad is typically larger than any sensing unit. In order to adopt a center to calculate the position after touch, it is effective for this array being scanned to verify the sensing station given, and the requirement for a number of adjacent sensing unit signal is to be greater than default touch threshold. After finding signal the strongest, this signal is all used for calculating center more than the closing signal of touch threshold with those:
N Cent = n i - 1 ( i - 1 ) + n i i + n i + 1 ( i + 1 ) n i - 1 + n i + n i + 1
Wherein, locating the label of sensing unit centered by Ncent, n is the number sensing unit being touched being detected, and i is the sequence number of sensing unit of being touched, and wherein i is be more than or equal to 2.
Such as, when finger touches at Article 1 passage, its capacitance change is y1, and the capacitance change on Article 2 passage is the capacitance change on y2 and Article 3 passage when being y3. Wherein second channel y2 capacitance change is maximum. Y coordinate just can be at last:
Y = y 1 * 1 + y 2 * 2 + y 3 * 3 y 1 + y 2 + y 3 .
The embodiment of the present invention proposes a kind of contactor control device according to above-mentioned thought. this contactor control device includes substrate, multiple disjoint sensing unit. in an embodiment of the present invention, can be parallel to each other between disjoint sensing unit, or can also be partly parallel between disjoint sensing unit. wherein, multiple sensing units are formed on substrate, and multiple sensing unit each have the first electrode and the second electrode that are oppositely arranged. as it is shown in figure 5, be the contactor control device schematic diagram of one embodiment of the invention. this contactor control device includes substrate 100, multiple disjoint sensing unit 200 and touch screen control chip 300. in an embodiment of the present invention, substrate 100 can be single layer substrate. wherein, as it can be seen, this contactor control device adopts the sensing unit 200 of rectangle, this rectangle sensing unit 200 has higher length-width ratio, and sensing unit 200 has the first electrode 210 and the second electrode 220 being oppositely arranged. adopt parallel rectangle sensing unit 200 can reduce the structure complexity of device, such that it is able to ensureing the basis of accuracy of detection reduces manufacturing cost. but it should be noted that at this, for multiple sensing units, being not limiting as its structure being Fig. 5, this sensing unit 200 also can adopt other structure, such as part or all of sensing unit has certain radian etc., and these all can be applicable in the present invention. touch screen control chip 300 is connected with the first electrode 210 of multiple sensing units 200 and the second electrode 220 respectively. and touch screen control chip 300 applies level signal to the first electrode 210 and/or second electrode 220 of multiple sensing units 200, make the self-capacitance charging that this level signal can produce to sensing unit 200 when sensing unit 200 is touched, and touch screen control chip 300 one or part when being touched in multiple sensing unit 200 being detected, calculate the proportionate relationship between the first resistance of the first electrode 210 to self-capacitance in corresponding sensing unit and the second resistance of the second electrode 220 to self-capacitance, and determine touch location in a first direction according to the proportionate relationship between the first resistance and the second resistance, and the position according to the sensing unit 200 being touched determines touch location in a second direction.
Specifically, proportionate relationship between first resistance and the second resistance is according to when to self-capacitance charge/discharge, the proportionate relationship calculating carrying out detecting between the first detected value obtained and the second detected value from the first electrode and/or the second electrode obtains, as mentioned above the first electrode and the charging of the second electrode, electric discharge or detection can be carried out simultaneously, it is possible to separately performed. When according to the first detected value and the second detected value, touch screen control chip 300 determines that the sensing unit of correspondence is touched, then touch screen control chip 300 calculates the first resistance and the proportionate relationship of the second resistance according to the first detected value and the second detected value, thus determining whether touch location in a first direction, and touch location in a second direction is determined in the position according to corresponding sensing unit 200. Last touch screen control chip 300 just can determine that position on the touchscreen, touch point according to the touch location on first direction and the touch location in second direction. At this it can further be stated that, in an embodiment of the present invention for the charging and discharging order not restriction for sensing unit, such as in one embodiment, it is possible in the way of scanning, all of sensing unit 200 is sequentially carried out charging, then in turn it is carried out discharge examination again; In another embodiment, one by one sensing unit 200 can be charged and discharged, for instance after sensing unit 200 charging, with that it is carried out discharge examination, after this sensing unit 200 has been processed, more next sensing unit 200 is processed. In one embodiment of the invention, touch screen control chip 300 applies level signal so that self-capacitance to be charged to the first electrode 210 and second electrode 220 of sensing unit 200, and touch screen control chip 300 is charged detecting to obtain the first charging detected value and the second charging detected value from the first electrode 210 and/or the second electrode 220.
In one embodiment of the invention, touch screen control chip 300 applies level signal so that self-capacitance to be charged to the first electrode 210 or second electrode 220 of sensing unit 200, and touch screen control chip 300 is charged detecting to obtain the first charging detected value and the second charging detected value from the first electrode 210 and the second electrode 220 respectively.
In one embodiment of the invention, touch screen control chip 300 applies level signal so that self-capacitance to be charged to the first electrode 210 and second electrode 220 of sensing unit 200, touch screen control chip 300 controls the first electrode 210 and/or the second electrode 220 ground connection so that self-capacitance to be discharged, and touch screen control chip 300 carries out discharge examination to obtain the first discharge examination value and the second discharge examination value from the first electrode and/or the second electrode.
In one embodiment of the invention, touch screen control chip 300 applies level signal so that self-capacitance to be charged to the first electrode 210 or second electrode 220 of sensing unit 200, touch screen control chip 300 controls the first electrode 210 and the second electrode 220 ground connection respectively so that self-capacitance to be discharged, and touch screen control chip 300 carries out discharge examination to obtain the first discharge examination value and the second discharge examination value from the first electrode 210 and/or the second electrode 220 respectively.
In one embodiment of the invention, touch screen control chip 300 applies level signal so that self-capacitance to be charged to the first electrode 210 or second electrode 220 of sensing unit 200, touch screen control chip 300 controls the first electrode 210 or the second electrode 220 ground connection respectively so that self-capacitance to be discharged, and touch screen control chip 300 carries out discharge examination to obtain the first discharge examination value and the second discharge examination value from the first electrode 210 and the second electrode 220 respectively.
In one embodiment of the invention, first direction is the length direction of sensing unit 200, and second direction is be perpendicular to the direction of sensing unit 200, and specifically, sensing unit 200 can be horizontally disposed with or be vertically arranged. Although, in Fig. 5 of this embodiment, sensing unit is placed in the horizontal direction, but in other embodiments, sensing unit also can be arranged in vertical.
It will be appreciated by those skilled in the art that, for sensing unit, as long as the length of sensing unit meets touch screen requirement, and different from the touch screen controller respectively pin of two end electrodes is connected can sensing unit be charged and discharged, it can be seen that the present invention is not limiting as the concrete structure of sensing unit. Sensing unit can have various structures, and sensing unit can be changed on the basis of the above-mentioned thought of the present invention or improve by those skilled in the art, but as long as these structures of above-mentioned thought without departing from the present invention just should be included within the scope of the present invention. The sensing unit structure of a kind of improvement is it is also proposed in this embodiment of the present invention.
As shown in Figure 6 a, for the sensing unit structure chart of one embodiment of the invention. This sensing unit 200 includes multiple Part I 230 and multiple parallel Part II 240, wherein, it is connected by Part II 240 between adjacent Part I 230, to form multiple the first alternately arranged groove 1000 and the second groove 2000, wherein, the opening direction of multiple first grooves 1000 and multiple second groove 2000 is contrary. Preferably, Part II 240 arranges in the first direction. In one embodiment of the invention, multiple Part I 230 can be parallel to each other, it is also possible to not parallel. And, it is preferable that Part II 240 is rectangle. In other embodiments of the invention, Part I 230 is alternatively rectangle, but Part I 230 can be also other various shape. In this embodiment, increased the impedance of resistance by Part I 230, thus increasing the impedance of sensing unit 200 so that the first resistance and the second resistance are more easy to detection, improve accuracy of detection further. And in such an embodiment, it is preferable the interval between Part II 240 is equal such that it is able to improve equably from the impedance of sensing unit, to improve accuracy of detection. In one embodiment of the invention, first direction is the length direction of sensing unit 200, and second direction is be perpendicular to the direction of sensing unit 200, and specifically, sensing unit 200 can be horizontally disposed with or be vertically arranged.
In an embodiment of the present invention, the size of sensing unit 200 length direction is basically identical with the size of substrate, and therefore touch control device structure is simple, it is easy to manufacture, and low cost of manufacture.
In one embodiment of the invention, the first electrode 210 is connected with two Part I in multiple Part I 230 respectively with the second electrode 220. But in another embodiment of the present invention, the first electrode 210 is connected with two Part II in multiple Part II 240 respectively with the second electrode 220, as shown in Figure 6 b.
Further, in an embodiment of the present invention, being mutually perpendicular between Part II 240 and Part I 230, angle therebetween is preferably 90 degree, certainly also may select other angles. As shown in Figure 6 a, multiple Part I 230 are joined end to end by this sensing unit 200 by multiple Part II 240, and the first electrode 210 of sensing unit 200 is connected with the Part I 230 at two ends respectively with the second electrode 220. From overall structure, this sensing unit 200 is the rectangle with high length to width aspect ratio. Although being somebody's turn to do it should be noted that sensing unit 200 is arranged along X-axis in Fig. 6 a, it should be understood by those skilled in the art that this sensing unit 200 also can be arranged along Y-axis. Noise can be efficiently reduced by the structure of this sensing unit, improve the linearity of sensing.
As shown in Figure 7a, for the sensing unit structure chart of another embodiment of the present invention. In this embodiment, this sensing unit 200 can be door shape, and in multiple sensing unit 200, the length of each sensing unit 200 is different, mutually nested between multiple sensing units 200. Wherein, each described sensing unit includes Part III 250, disjoint Part IV 260 and Part V 270. Preferably, Part III 250 is parallel with the first limit 110 of substrate 100, Part IV 260 is parallel with the second limit 120 of substrate 100 with Part V 270, and Part IV 260 one end is connected with one end of Part III 250, and one end of Part V 270 is connected with the other end of Part III 250. The other end of the Part IV 260 of sensing unit 200 has the first electrode 210, and the other end of Part V 270 has the second electrode 220, and wherein, the pin that each first electrode 210 is all corresponding with touch screen control chip with the second electrode 220 is connected.
In an embodiment of the present invention, the so-called mutually nested sensing unit referring to outside partly surrounds the sensing unit of inner side, for instance as shown in Figure 7a, so can reach bigger coverage rate while ensureing precision, and reduce the complexity of computing, improve the response speed of touch screen. Certain those skilled in the art also can adopt other mutually nested modes to arrange sensing unit according to the thought of Fig. 7 a. In one embodiment of the invention, the Part III 250 of each sensing unit 200 is parallel with the Part III 250 of other sensing units 200, the Part IV 260 of each sensing unit 200 is parallel with the Part IV 260 of other sensing units 200, and the Part V 270 of each sensing unit 200 is parallel with the Part V 270 of other sensing units 200. In one embodiment of the invention, in the Part III 250 of sensing unit 200, Part IV 260 and Part V 270, at least one is rectangle, it is preferable that Part III 250, Part IV 260 and Part V 270 are rectangle. In this embodiment, due to rectangular configuration figure rule, therefore when finger lateral or longitudinal movement, the linearity is good, additionally, the spacing between two rectangular configuration is identical, it is simple to calculate, thus improving calculating speed.
In one embodiment of the invention, the Part IV 260 of each sensing unit 200 is equal with Part V 270 length.
In one embodiment of the invention, substrate 100 is rectangle, is mutually perpendicular to, and is mutually perpendicular between Part IV 260 and Part III 250, be mutually perpendicular between Part V 270 and Part III 250 between the first limit 110 and the second limit 120.
In one embodiment of the invention, spacing between the Part III 250 of adjacent two sensing units 200 is equal, spacing between the Part IV 260 of adjacent two sensing units 200 is equal, and the spacing between the Part V 270 of adjacent two sensing units 200 is equal. Thus can pass through multiple sensing units 200 first limit 110 and second limit 120 of touch screen are evenly dividing, thus improving arithmetic speed. Certainly in other embodiments of the invention, the spacing between the Part III 250 of adjacent two sensing units 200 also can be unequal, or, the spacing between the Part IV 260 of adjacent two sensing units 200 also can be unequal, as shown in Figure 7b. Such as, often touching the centre of touch screen due to user, therefore the spacing between the sensing unit at touch screen center position can being reduced, thus improving the accuracy of detection in centre.
In one embodiment of the invention, multiple sensing units 200 are symmetrical relative to the central shaft Y of substrate 100, and as shown in Figure 7a, central shaft Y is perpendicular to Part III 250, thus being more beneficial for improving precision.
As shown in Figure 7a, in this embodiment, the first electrode 210 of sensing unit 200 and the second electrode 220 are respectively positioned on the first limit 110 of substrate 100. In this embodiment, after the touch location on sensing unit being detected, the touch location on touch screen can be obtained.
It should be noted that above-mentioned Fig. 7 a is the present invention preferably embodiment, it is obtained in that bigger coverage rate, but Fig. 7 a can be carried out the change that some are equivalent by other embodiments of the present invention, for instance Part IV 260 and Part V 270 can be uneven.
Sensing unit in the embodiment of the present invention adopts the structure of similar door shape, is not only simple in structure, it is simple to make, and institute is leaded, and all same, design is convenient, reduces silver and starches cost and make easily, has very great help to reducing production cost.
As shown in Figure 8, schematic diagram when being touched for the sensing unit of the embodiment of the present invention. As can be seen from Figure 8, first electrode is 210, second electrode is 220, touch location is close to the second electrode, the length assuming sensing unit is 10 unit lengths, and sensing unit is evenly divided into 10 parts, wherein, the length of sensing unit Part III 250 is 4 unit lengths, and the length of sensing unit Part IV 260 and Part V 270 is 3 unit lengths. Through detection, knowing that the ratio of the first resistance and the second resistance is 4: 1, namely the length (being embodied by the first resistance) of the first electrode 210 to touch location is the 80% of whole sensing unit length. In other words, touch point is positioned at the position of 8 unit lengths in distance the first electrode 210 place, knows, touch point is positioned at the position of 2 unit lengths in distance the second electrode 220 place. When finger moves, touch location can move accordingly, therefore just can determine whether the corresponding motion track of finger by the conversion of touch location, thus judging the input instruction of user.
From the example above of Fig. 8 it can be seen that the calculation of the present invention is very simple, therefore, it is possible to be greatly enhanced the response speed of touch screen detection.
As illustrated in fig. 9, for further embodiment Touch-screen testing equipment structure chart of the present invention. In one embodiment of the invention, the length of multiple sensing units is gradually increased, and each described sensing unit includes Part VI 280 and Part VII 290. One end of Part VI 280 has the first electrode 210, and one end of Part VII 290 is connected with the other end of Part VI 280, and the other end of Part VII 290 has the second electrode 220.
Specifically, Part VI 280 is parallel with the first limit 110 of substrate 100, and Part VII 290 is parallel with the second limit 120 of substrate 100, and the first limit 110 and the second limit 120 adjacent. And each first electrode 210 is all connected with the corresponding pin of touch screen control chip with the second electrode 220.
In a preferred embodiment of the invention, the Part VI 280 of each sensing unit 200 is parallel with the Part VI 280 of other sensing units 200, and the Part VII 290 of each sensing unit 200 is parallel with the Part VII 290 of other sensing units 200. The sensing unit coverage rate to touch screen can be effectively improved by such setting. In one embodiment of the invention, the Part VI 280 of sensing unit 200, at least one is rectangle in Part VII 290, it is preferable that Part VI 280, Part VII 290 are rectangle. In this embodiment, due to rectangular configuration figure rule, therefore when finger lateral or longitudinal movement, the linearity is good, additionally, the spacing between two rectangular configuration is identical, it is simple to calculate.
Sensing unit in the touch screen detection device of the embodiment of the present invention adopts double-end monitor, namely the two ends of sensing unit are respectively provided with electrode, and each electrode is all connected with the corresponding pin of touch screen control chip, the location to touch point can be realized when carrying out touching detection by sensing unit self.
What is more important, the present invention realizes the determination of touch location by calculating ratio between the first resistance and the second resistance, therefore relative to current rhombus or triangular design, due to when determining touch location, without calculating the size of self-capacitance, and the size of self-capacitance is without influence on the precision of touch location, and the dependence of self-capacitance accuracy of detection is reduced, thus improve certainty of measurement, improve the linearity. In addition, owing in the Part V 270 of the embodiment of the present invention, Part VI 280 and Part VII 290, any one can be all the rectangle of regular shape, therefore relative to irregular shapes such as current rhombus or trianglees, it is also possible to improve the linearity further.
In one embodiment of the invention, the Part VI 280 of each sensing unit is equal with Part VII 290 length such that it is able to improve arithmetic speed. Preferably, substrate 100 is rectangle, is mutually perpendicular between the first limit 110 and the second limit 120. First limit 110 and the second limit 120 are mutually perpendicular to, not only make sensing unit design more regular, such as make also to be mutually perpendicular between the Part VI 280 of sensing unit and Part VII 290, thus improving the coverage rate to touch screen, and between Part VI 280 and Part VII 290, it is mutually perpendicular to the linearity that can also improve detection.
In one embodiment of the invention, the spacing between adjacent two sensing units 200 is equal, thus can pass through multiple sensing units 200 and first limit 110 and second limit 120 of touch screen are evenly dividing, thus improving arithmetic speed, improve and calculating speed.
Certainly in another embodiment of the present invention, spacing between adjacent two sensing units 200 can not also wait, as shown in figure 9b, the centre of touch screen is such as often touched due to user, therefore the spacing between the sensing unit at touch screen center position can be reduced, thus improving the accuracy of detection in centre.
As illustrated in fig. 9, in this embodiment, the first electrode 210 of sensing unit 200 is positioned on the first limit 110 of substrate 100, and the second electrode 220 is positioned on the second limit 120 of substrate 100, and the first limit 110 and the second limit 120 are mutually perpendicular to. In this embodiment, after the touch location on sensing unit being detected, the touch location on touch screen can be obtained.
As shown in Figure 10, schematic diagram when being touched for the sensing unit of the embodiment of the present invention. As can be seen from Figure 10, first electrode is 210, second electrode is 220, touch location is close to the second electrode 220, the length assuming sensing unit is 10 unit lengths, and sensing unit is evenly divided into 10 parts, wherein, the length of sensing unit Part VI 280 is 5 unit lengths, and the length of sensing unit Part VII 290 is 5 unit lengths. Through detection, knowing that the ratio of the first resistance and the second resistance is 9: 1, namely the length (being embodied by the first resistance) of the first electrode 210 to touch location is the 90% of whole sensing unit length. In other words, touch point is positioned at the position of 9 unit lengths in distance the first electrode 210 place, knows, touch point is positioned at the position of 1 unit length in distance the second electrode 220 place.
From the example above of Figure 10 it can be seen that the calculation of the present invention is very simple, therefore, it is possible to be greatly enhanced the response speed of touch screen detection.
In one embodiment of the invention, multiple sensing units 200 are positioned at same layer, therefore have only to one layer of ITO, thus while ensureing precision, greatly reducing manufacturing cost.
Sensing unit in the touch screen detection device of the embodiment of the present invention adopts double-end monitor, namely the two ends of sensing unit are respectively provided with electrode, and each electrode is all connected with the corresponding pin of touch screen control chip, the location to touch point can be realized when carrying out touching detection by sensing unit self.
What is more important, the present invention realizes the determination of touch location by calculating ratio between the first resistance and the second resistance, therefore relative to current rhombus or triangular design, due to when determining touch location, without calculating the size of self-capacitance, and the size of self-capacitance is without influence on the precision of touch location, and the dependence of self-capacitance accuracy of detection is reduced, thus improve certainty of measurement, improve the linearity.
In sum, the embodiment of the present invention is by applying level signal to the electrode at sensing unit two ends, if this sensing unit is touched, then can form self-capacitance by this sensing unit, therefore this self-capacitance can be charged by the present invention by the level signal applied, and determines touch location in a first direction according to the proportionate relationship between the first resistance and the second resistance. Such as in one embodiment of the invention, proportionate relationship between first resistance and the second resistance is according to when to described self-capacitance charge/discharge, and the proportionate relationship calculating carrying out detecting between the first detected value obtained and the second detected value from described first electrode and/or the second electrode obtains. Therefore the first detected value produced time from the first electrode and/or this self-capacitance charge/discharge of the second electrode detection and the second detected value. So, just can react touch point by the first detected value and the second detected value and be positioned at the position of this sensing unit, thus further determining that the position at touch screen, the touch point.
The embodiment of the present invention proposes the self-capacitance detection mode of a kind of novelty, when sensing unit is touched, this sensing unit just can be divided into two resistance by touch point, thus considering that while carrying out self-capacitance detection the two resistance is assured that position on this sensing unit, the touch point. The simple in construction of the embodiment of the present invention, and for a sensing unit, can be charged from its first electrode and/or the second electrode or discharge, and detect when charge or discharge, RC constant can not only be reduced, the saving time improves efficiency, and also ensure that coordinate will not offset. Additionally, the embodiment of the present invention can also be effectively improved the to-noise ratio of circuit, reduce circuit noise, improve the sensing linearity. And, owing to the sensing unit being touched is charged in detection process, therefore small area analysis can wherein be produced, the impact on the self-capacitance that sensing unit in touch screen produces of the Vcom level signal can be eliminated well, therefore screenmask layer and concerned process steps can correspondingly be eliminated, such that it is able to reduce cost while enhancing capacity of resisting disturbance further.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention. In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example. And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, being appreciated that and these embodiments can be carried out multiple change, amendment, replacement and modification without departing from the principles and spirit of the present invention, the scope of the invention and equivalency.

Claims (44)

1. a contactor control device, it is characterised in that including:
Substrate;
Multiple sensing units, the plurality of sensing unit mutually disjoints, and the plurality of sensing unit is formed on described substrate, and the plurality of sensing unit each have the first electrode and the second electrode, and wherein, the plurality of sensing unit is positioned at same layer; With
Touch screen control chip, the first electrode and the second electrode that described touch screen control chip is each with the plurality of sensing unit respectively are connected, described touch screen control chip applies level signal to the first electrode and/or second electrode of the plurality of sensing unit, the self-capacitance charging that described level signal produces to described sensing unit when sensing unit is touched, and described touch screen control chip one or part in the plurality of sensing unit being detected are when being touched, calculate the proportionate relationship between the first resistance of the extremely described self-capacitance of the first electrode described in corresponding sensing unit and the second resistance of described second electrode extremely described self-capacitance, and determine touch location according to the proportionate relationship between described first resistance and described second resistance.
2. contactor control device as claimed in claim 1, it is characterized in that, proportionate relationship between described first resistance and described second resistance is according to when to described self-capacitance charge/discharge, and the proportionate relationship calculating carrying out detecting between the first detected value obtained and the second detected value from described first electrode and/or the second electrode obtains.
3. contactor control device as claimed in claim 2, it is characterised in that described first detected value and described second detected value are one or more in current detection value, self-capacitance detected value, level signal detected value and change in electrical charge amount.
4. contactor control device as claimed in claim 1, it is characterised in that described sensing unit is rectangle, and described touch location is touch location in a first direction.
5. contactor control device as claimed in claim 1, it is characterised in that described sensing unit includes:
Multiple Part I and multiple parallel Part II, wherein, it is connected by described Part II between adjacent described Part I, to form multiple the first alternately arranged groove and the second groove, wherein, the opening direction of the plurality of first groove and the plurality of second groove is contrary, and described touch location is touch location in a first direction.
6. contactor control device as claimed in claim 5, it is characterised in that described Part II arranges along described first direction.
7. the contactor control device as described in any one of claim 4-6, it is characterised in that described touch screen control chip be additionally operable to according to described in the position of sensing unit that is touched determine touch location in a second direction.
8. contactor control device as claimed in claim 7, it is characterised in that described touch screen control chip determines described touch location according to the touch location on described first direction and the touch location in second direction.
9. contactor control device as claimed in claim 1, it is characterised in that described sensing unit includes:
Part III, one end of described Part III has described first electrode;
Part IV, one end of described Part IV is connected with the other end of described Part III, and the other end of described Part IV has described second electrode.
10. contactor control device as claimed in claim 9, it is characterised in that described Part III and in described Part IV, at least one is rectangle.
11. contactor control device as claimed in claim 1, it is characterised in that described sensing unit includes:
Part V;
Disjoint Part VI and Part VII, described Part VI one end is connected with one end of described Part V, one end of described Part VII is connected with the other end of described Part V, the other end of described Part VI has described first electrode, and the other end of described Part VII has described second electrode.
12. contactor control device as claimed in claim 11, it is characterised in that the length of the plurality of sensing unit is different from each other, and mutually nested between the plurality of sensing unit.
13. contactor control device as claimed in claim 11, it is characterized in that, described substrate is rectangle, it is mutually perpendicular between first limit and second limit of described substrate of described substrate, it is mutually perpendicular between described Part VI and described Part V, and is mutually perpendicular between described Part VII and described Part V.
14. contactor control device as claimed in claim 11, it is characterised in that in described Part V, described Part VI and described Part VII, at least one is rectangle.
15. contactor control device as claimed in claim 7, it is characterised in that described first direction is the length direction of described sensing unit, and described second direction is be perpendicular to the direction of described sensing unit, and described sensing unit is horizontally disposed with or is vertically arranged.
16. contactor control device as claimed in claim 1, it is characterised in that described substrate is rectangle, is mutually perpendicular between the first limit and second limit of described substrate.
17. contactor control device as claimed in claim 2, it is characterised in that described first detected value includes the first charging detected value or the first discharge examination value, and described second detected value includes the second charging detected value or the second discharge examination value.
18. contactor control device as claimed in claim 1, it is characterised in that described touch screen control chip includes one or two capacitive detection module CTS.
19. a touch screen detection device, it is characterised in that including:
Substrate; With
Multiple disjoint sensing units, the plurality of sensing unit is formed on described substrate, and the plurality of sensing unit each have the first electrode and the second electrode that are oppositely arranged, wherein, each first electrode and the second electrode are all connected with a pin of touch screen controller, wherein, the plurality of sensing unit is positioned at same layer.
20. touch screen detection device as claimed in claim 19, it is characterised in that described sensing unit is rectangle.
21. touch screen detection device as claimed in claim 19, it is characterised in that described sensing unit includes:
Multiple Part I and multiple parallel Part II, wherein, it is connected by described Part II between adjacent described Part I, to form multiple the first alternately arranged groove and the second groove, wherein, the opening direction of the plurality of first groove and the plurality of second groove is contrary.
22. touch screen detection device as claimed in claim 19, it is characterised in that described sensing unit includes:
Part III, one end of described Part III has described first electrode;
Part IV, one end of described Part IV is connected with the other end of described Part III, and the other end of described Part IV has described second electrode.
23. touch screen detection device as claimed in claim 19, it is characterised in that described sensing unit includes:
Part V;
Disjoint Part VI and Part VII, described Part VI one end is connected with one end of described Part V, one end of described Part VII is connected with the other end of described Part V, the other end of described Part VI has described first electrode, and the other end of described Part VII has described second electrode.
24. touch screen detection device as claimed in claim 23, it is characterised in that the length of the plurality of sensing unit is different from each other, and mutually nested between the plurality of sensing unit.
25. touch screen detection device as claimed in claim 23, it is characterized in that, described substrate is rectangle, it is mutually perpendicular between first limit and second limit of described substrate of described substrate, it is mutually perpendicular between described Part VI and described Part V, and is mutually perpendicular between described Part VII and described Part V.
26. touch screen detection device as claimed in claim 23, it is characterized in that, spacing between the Part V of adjacent two sensing units is equal, and the spacing between the Part VI of adjacent two sensing units is equal, and the spacing between the Part VII of adjacent two sensing units is equal.
27. a touch detecting method, it is characterised in that comprise the following steps:
Applying level signal to the first electrode and/or second electrode of multiple sensing units, wherein, when described sensing unit is touched, the self-capacitance that described sensing unit is produced by described level signal is charged;
Detecting in the plurality of sensing unit one or whether part sensing unit is touched, wherein, the plurality of sensing unit is positioned at same layer;
If be detected that one or part are touched in the plurality of sensing unit, then calculate the first electrode described in corresponding sensing unit to the first resistance of described self-capacitance and described second electrode to the second resistance of described self-capacitance between proportionate relationship; And
Touch location is determined according to the proportionate relationship between described first resistance and described second resistance.
28. touch detecting method as claimed in claim 27, it is characterized in that, proportionate relationship between described first resistance and described second resistance is according to when to described self-capacitance charge/discharge, and the proportionate relationship calculating carrying out detecting between the first detected value obtained and the second detected value from described first electrode and/or the second electrode obtains.
29. touch detecting method as claimed in claim 28, it is characterised in that described first detected value and described second detected value are one or more in current detection value, self-capacitance detected value, level signal detected value and change in electrical charge amount.
30. touch detecting method as claimed in claim 27, it is characterised in that described sensing unit is rectangle, and described touch location is touch location in a first direction.
31. touch detecting method as claimed in claim 27, it is characterised in that described sensing unit includes:
Multiple Part I and multiple parallel Part II, wherein, it is connected by described Part II between adjacent described Part I, to form multiple the first alternately arranged groove and the second groove, wherein, the opening direction of the plurality of first groove and the plurality of second groove is contrary.
32. touch detecting method as claimed in claim 30, it is characterised in that also include:
Touch location in a second direction is determined in position according to the described sensing unit being touched.
33. touch detecting method as claimed in claim 32, it is characterised in that also include:
Described touch location is determined according to the touch location on described first direction and the touch location in second direction.
34. touch detecting method as claimed in claim 27, it is characterised in that described sensing unit includes:
Part III, one end of described Part III has described first electrode;
Part IV, one end of described Part IV is connected with the other end of described Part III, and the other end of described Part IV has described second electrode.
35. touch detecting method as claimed in claim 27, it is characterised in that described sensing unit includes:
Part V;
Disjoint Part VI and Part VII, described Part VI one end is connected with one end of described Part V, one end of described Part VII is connected with the other end of described Part V, the other end of described Part VI has described first electrode, and the other end of described Part VII has described second electrode.
36. touch detecting method as claimed in claim 28, it is characterised in that described first detected value includes the first charging detected value or the first discharge examination value, and described second detected value includes the second charging detected value or the second discharge examination value.
37. touch detecting method as claimed in claim 36, it is characterised in that also include:
Level signal is applied so that described self-capacitance to be charged to the first electrode and second electrode of described sensing unit;
It is charged detecting to obtain described first charging detected value and the second charging detected value from described first electrode and/or the second electrode.
38. touch detecting method as claimed in claim 36, it is characterised in that also include:
Level signal is applied respectively for twice so that described self-capacitance is performed twice at charging to the first electrode or second electrode of described sensing unit;
After charging every time, it is charged detecting to obtain described first charging detected value and the second charging detected value from described first electrode and/or the second electrode.
39. touch detecting method as claimed in claim 38, it is characterized in that, when applying level signal so that described self-capacitance is performed twice at charging twice respectively to the first electrode of described sensing unit, in described twice charging once by described second electrode ground connection, described second electrode is connect as high resistant by another time;
When to the second electrode of described sensing unit respectively twice apply level signal so that described self-capacitance is performed twice at charging time, in described twice charging once by described first electrode ground connection, described first electrode is connect as high resistant by another time.
40. touch detecting method as claimed in claim 36, it is characterised in that also include:
Level signal is applied so that described self-capacitance to be charged to the first electrode and second electrode of described sensing unit;
Control described first electrode and/or described second electrode ground connection so that described self-capacitance to be discharged, and carry out discharge examination to obtain described first discharge examination value and the second discharge examination value from described first electrode and/or the second electrode.
41. touch detecting method as claimed in claim 36, it is characterised in that also include:
Level signal is applied so that described self-capacitance to be charged to the first electrode or second electrode of described sensing unit;
Control described first electrode and described second electrode ground connection respectively so that described self-capacitance to be discharged, and carry out discharge examination to obtain described first discharge examination value and the second discharge examination value from described first electrode and/or the second electrode respectively.
42. touch detecting method as claimed in claim 36, it is characterised in that also include:
Level signal is applied so that described self-capacitance to be charged to the first electrode or second electrode of described sensing unit;
Control described first electrode or described second electrode ground connection respectively so that described self-capacitance to be discharged, and carry out discharge examination to obtain described first discharge examination value and the second discharge examination value from described first electrode and the second electrode respectively.
43. a portable electric appts, it is characterised in that include the contactor control device as described in any one of claim 1-18.
44. a portable electric appts, it is characterised in that include the touch screen detection device as described in any one of claim 19-26.
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TW101126426A TWI505163B (en) 2011-07-26 2012-07-23 Touch detecting method, touch screen detecting device, touch sensitive device, and portable electronic apparatus
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CN102902440B (en) 2016-03-30
TWI494833B (en) 2015-08-01
CN102902435B (en) 2015-12-02
CN102902432B (en) 2016-03-02
CN202600661U (en) 2012-12-12
CN102902438A (en) 2013-01-30
CN102902428A (en) 2013-01-30
WO2013013635A1 (en) 2013-01-31
WO2013013636A1 (en) 2013-01-31
TWI482074B (en) 2015-04-21
WO2013013624A1 (en) 2013-01-31
CN202649961U (en) 2013-01-02
CN102902427A (en) 2013-01-30
CN202795313U (en) 2013-03-13
CN102902442B (en) 2016-04-27
TWM453897U (en) 2013-05-21
TWI479399B (en) 2015-04-01
CN102902443B (en) 2016-01-13
CN202600660U (en) 2012-12-12
CN102902436B (en) 2015-12-02
CN102902437A (en) 2013-01-30
WO2013013634A1 (en) 2013-01-31
CN102902435A (en) 2013-01-30
CN102902429B (en) 2016-05-04
TWM450007U (en) 2013-04-01
CN202795315U (en) 2013-03-13
TWI475437B (en) 2015-03-01
CN202795314U (en) 2013-03-13
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CN202548806U (en) 2012-11-21
CN102902430B (en) 2016-03-30
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CN102902430A (en) 2013-01-30
CN102902444B (en) 2016-08-17
TW201324296A (en) 2013-06-16
TW201305892A (en) 2013-02-01
CN102902439B (en) 2016-11-09
CN202649960U (en) 2013-01-02
CN202548807U (en) 2012-11-21
CN202795285U (en) 2013-03-13
CN102902432A (en) 2013-01-30
TW201308156A (en) 2013-02-16
CN102902444A (en) 2013-01-30
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CN202649984U (en) 2013-01-02
CN102902441A (en) 2013-01-30
TW201308180A (en) 2013-02-16
CN102902434B (en) 2015-09-30
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TWI485604B (en) 2015-05-21
TWI483164B (en) 2015-05-01
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