CN102902441B - Touch detection components, contactor control device and portable electric appts - Google Patents

Touch detection components, contactor control device and portable electric appts Download PDF

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Publication number
CN102902441B
CN102902441B CN201210093649.3A CN201210093649A CN102902441B CN 102902441 B CN102902441 B CN 102902441B CN 201210093649 A CN201210093649 A CN 201210093649A CN 102902441 B CN102902441 B CN 102902441B
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hollow
out parts
electrode
group
sensing
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CN102902441A (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 CN201210093649.3A priority Critical patent/CN102902441B/en
Priority to TW101214478U priority patent/TWM470979U/en
Priority to TW101126935A priority patent/TWI485604B/en
Priority to PCT/CN2012/079186 priority patent/WO2013013625A1/en
Publication of CN102902441A publication Critical patent/CN102902441A/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 invention discloses a kind of touch detection components, including: substrate；With multiple sensing units, multiple sensing units, the plurality of sensing unit is located on described substrate and mutually disjoints, each described sensing unit includes sensing body and the first electrode and the second electrode, described sensing body is rectangle, described sensing body has multiple hollow-out parts, the plurality of hollow-out parts arranges with pre-defined rule to limit the current path portion for increasing the resistance between described first and second electrodes on described sensing body, described current path portion extends in curve mode between the first end and second end of described sensing body so that length in described current path portion in their extension direction is more than the length of described sensing body。Touch detection components according to embodiments of the present invention, can obtain the size of resistance needed for accuracy of detection, and then improve the linearity of sensing。The invention also discloses a kind of contactor control device and portable electric appts。

Description

Touch detection components, contactor control device and portable electric appts
Technical field
The present invention relates to electronic device design and manufacturing technology field, particularly relate to and a kind of touch detection components, the contactor control device with described touch detection components and portable electric appts。
Background technology
Touch detection components (touch screen) at present at mobile phone, PDA (personal digital assistant), GPS (global positioning system), PMP (MP3, MP4 etc.), even the electronic equipment such as panel computer obtains application。Touch screen has that touch control operation is simple, convenient, the advantage of hommization, and therefore touch screen is expected to become the best interface of human-computer interaction and be widely applied in a portable device。
Capacitance touch detection components is typically divided into self-capacitance and mutual capacitance type two class。Existing monolayer self-capacitance touch screen is the scan electrode in the useful ITO of glass surface (IndiumTinOxides, the nano indium tin metal-oxide) bar shaped made。ITO is a kind of conductive materials having fixed resistance rate, and its comparison of coherence on base material is high, just may certify that this point from the linearity of touch screens。These electrodes and the surrounding such as ground and circuit constitute the two poles of the earth of an electric capacity。When being connected in parallel with a capacitor in circuit when touching with hands or felt pen, so that the overall capacitance amount on this scanning line changes。When scanning, controlling IC and scan each sensing element by specific scan mode, and determine the position of touch point according to the capacitance variations before and after scanning, exchanging thus reaching human computer conversation。Generally capacitance touch screen is and TFT (ThinFilmTransistor, TFT) LCD pairing work together, and is located in above LCD。
Fig. 1 illustrates that a kind of tradition self-capacitance touches detection components。This self-capacitance touches detection components mainly 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 using the cross point of this row and column as touch coordinate。Although the linearity that this self-capacitance touches detection components 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。
Fig. 2 a illustrates that another kind of tradition self-capacitance touches detection components。This self-capacitance touches detection components and adopts triangular pattern screen structure。This self-capacitance touches detection components and 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 '。Fig. 2 b illustrates that triangle self-capacitance touches the Cleaning Principle of detection components。As shown in Figure 2 b, 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 traditional 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 touches detection components simple in construction, but does not have 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, the capacitance change of traditional capacitance sensing unit output 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 application is based on inventor's understanding to following facts: the bar shaped that sensing element is bilateral lead-in wire of traditional monolayer self-capacitance touch screen。After the size of screen is determined, the size of this bar shaped just determines substantially。The width of bar shaped sensing element is approximately 5mm, and this width broadens can affect the linearity, and this narrow width will increase passage sensing element。The length of bar shaped is exactly the length of touch screen substantially。After the length and width of bar shaped are determined, the resistance between the two ends of this bar shaped determines that。Resistance R=P*L/h, wherein, L is the length of sensing element, h is the height of sensing element, and the sheet resistance that P is ITO (that is, makes a square the ITO layer being plated in above base material, then resistance from left to right, is a basic parameter of ITO base material)。The size of sheet resistance P is relevant with the thickness of ITO layer。And in this area, ITO sheet resistance is only had several limited standard value。Thus, after making monolayer self-capacitance touch screen with the base material of fixing ITO sheet resistance, the resistance R of every can calculate and obtain。But, the principle touched due to detection finger is to calculate the ratio of resistance, if resistance R is too big or too little all can affect accuracy of detection, wherein parameter P is that base material determines, L and h is that touch screen size determines, can not arbitrarily changing during design, if so sensing element makes simple bar shaped, resistance is frequently not the value of most suitable measurement。
Present invention aims to solve at least to a certain extent one of above-mentioned technical problem, be especially intended at least to solve or avoid the occurrence of one of disadvantages mentioned above that tradition self-capacitance touches in detection components。
The first aspect of the embodiment of the present invention proposes a kind of touch detection components, including: substrate；With multiple sensing units, the plurality of sensing unit is located on described substrate and mutually disjoints, each described sensing unit includes sensing body and the first electrode being connected respectively and the second electrode with described sensing body, described sensing body has multiple hollow-out parts, and the plurality of hollow-out parts arranges with pre-defined rule to limit the current path portion for increasing the resistance between described first and second electrodes on described sensing body。
Touch detection components according to embodiments of the present invention, by arranging hollow-out parts on sensing body, the path that can make the current path portion of whole sensing body is thinner or longer, it is equivalent in R=P*L/h formula and adds L or decrease h, the resistance R between the first electrode and the second electrode is made to become big, thus the size of the resistance needed for obtaining accuracy of detection, and then improve the linearity of sensing。
The second aspect of the embodiment of the present invention also proposed a kind of contactor control device, including: touching detection components, described touch detection components is touch detection components described in embodiment according to a first aspect of the present invention；And control chip, described control chip is connected with described first electrode and the second electrode, described control chip is configured for applying level signal to produce the electric current flowed between described first and second electrodes by described current path portion to described first electrode and/or the second electrode, for the self-capacitance charging produced to described sensing body when being touched by described electric current, during for being touched at the sensing body at least one described sensing unit being detected, calculate the proportionate relationship between the second resistance between the first resistance and described second electrode and the described self-capacitance of at least one sensing unit described between described first electrode and the described self-capacitance of at least one sensing unit described, and for determining the touch location that the sensing body of at least one described sensing unit described is touched according to the proportionate relationship between described first resistance and described second resistance。
Contactor control device according to embodiments of the present invention, realizes the determination of touch location by calculating ratio between the first resistance R1 and the second resistance R2, improves certainty of measurement, improve the linearity。
The third aspect of the embodiment of the present invention also proposed a kind of portable electric appts, including touch control detection assembly as above。
The fourth aspect of the embodiment of the present invention also proposed a kind of portable electric appts, including contactor control device as above。
The additional aspect of the present invention and advantage 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
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the structure chart that a kind of tradition self-capacitance touches detection components；
Fig. 2 a is the structure chart that another kind of tradition self-capacitance touches detection components；
Fig. 2 b is the Cleaning Principle figure that another kind of tradition self-capacitance shown in Fig. 2 a touches detection components；
Fig. 3 is the Cleaning Principle schematic diagram of the contactor control device of the embodiment of the present invention；
Fig. 4 is the touch detecting method flow chart of the contactor control device of the embodiment of the present invention；
Fig. 5 is the schematic diagram of the contactor control device of one embodiment of the invention, and wherein sensing body is rectangle；
Fig. 6-Figure 17 is the schematic diagram of the different examples touching detection components according to an embodiment of the invention, and wherein sensing body is rectangle；
Figure 18-Figure 29 is the schematic diagram of the different examples touching detection components in accordance with another embodiment of the present invention, and wherein sensing body is generally L-shaped；
Figure 30-Figure 41 is the schematic diagram of the different examples of the touch detection components according to further embodiment of the present invention, and wherein sensing body is general U-shape；
Figure 42 is the schematic diagram of the touch detection components according to another embodiment of the present invention；
Figure 43 is the schematic diagram of touch detection components according to a different embodiment；
Figure 44 touches the schematic diagram when sensing unit of detection components is touched according to an embodiment of the invention, and wherein sensing body is general U-shape；And
Figure 45 touches the schematic diagram when sensing unit of detection components is touched according to an embodiment of the invention, and wherein sensing body is generally L-shaped。
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 considered as limiting the invention。
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship; be for only for ease of the description present invention and simplifying and describe; rather than instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention。Additionally, term " first ", " second " are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic。Thus, define " first ", the feature of " second " can express or implicitly include one or more these features。In describing the invention, except as otherwise noted, " multiple " are meant that two or more。
In describing the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals。For the ordinary skill in the art, it is possible to concrete condition understands above-mentioned term concrete meaning in the present invention。
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can include the first and second features and directly contact, it is also possible to include the first and second features and be not directly contact but by the other characterisation contact between them。And, fisrt feature second feature " on ", " top " and " above " include fisrt feature directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature。Fisrt feature second feature " under ", " lower section " and " below " include fisrt feature directly over second feature and oblique upper, or be merely representative of fisrt feature level height less than second feature。
The Cleaning Principle of the contactor control device of embodiment according to a second aspect of the present invention is described first below。Contactor control device according to embodiments of the present invention includes touching detection components 100 and control chip 200, as shown in Figure 5, touching detection components 100 include substrate 1 and set sensing unit 2 on substrate 1, wherein sensing unit 2 includes sensing body 20 and the first electrode 21 and the second electrode 22 being connected with sensing body 20。As it is shown in figure 5, be the contactor control device schematic diagram of one embodiment of the invention。In an embodiment of the present invention, if any multiple sensing units 2, then can be parallel to each other between disjoint sensing unit 2, or can also be partly parallel between disjoint sensing unit 2。In an embodiment of the present invention, substrate 1 can be single layer substrate。But it should be noted that at this, for multiple sensing units 2, being not limiting as its structure being Fig. 5, this sensing unit 2 also can adopt other structure, such as part or all of sensing unit 2 has certain radian etc., and these all can be applicable in the present invention。
Control chip 200 is connected with the first electrode 21 and the second electrode 22 respectively, control chip 200 is configured for applying level signal to produce the electric current flowed between the first electrode 21 and the second electrode 22 by current path portion 25 to the first electrode 21 and/or the second electrode 22, for the self-capacitance charging produced to sensing body 20 when being touched by electric current, during for being touched at the sensing body 20 at least one sensing unit 2 being detected, calculate the proportionate relationship between the second resistance between the first resistance between the first electrode 21 and the self-capacitance of at least one sensing unit 2 and the second electrode 22 and the self-capacitance of at least one sensing unit 2, and for determining the touch location that the sensing body 20 of at least one sensing unit 2 is touched according to the proportionate relationship between the first resistance and the second resistance。
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 touching detection components control chip 200 and determining that the sensing unit of correspondence is touched according to the first detected value and the second detected value, then touch detection components control chip 200 and calculate 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 2。Finally touch detection components control chip 200 and just can determine that touch point is in the position touched in detection components 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 2 is sequentially carried out charging, then in turn it is carried out discharge examination again；In another embodiment, it is possible to one by one sensing unit 2 is charged and discharged, for instance after sensing unit 2 charging, with that it is carried out discharge examination, after this sensing unit 2 has been processed, more next sensing unit 2 is processed。In one embodiment of the invention, touch the detection components control chip 200 first electrode 21 to sensing unit 2 and the second electrode 22 applies level signal so that self-capacitance to be charged, touch detection components control chip 200 and be charged detecting to obtain the first charging detected value and the second charging detected value from the first electrode 21 and/or the second electrode 22。
Specifically, the contactor control device of the embodiment of the present invention adopts novel self-capacitance detection mode, when sensing unit is touched, self-capacitance is produced at the touch point place of sensing unit, and sensing unit can be divided into two resistance by touch point, while carrying out self-capacitance detection, consider that the two resistance is assured that position on this sensing unit, the touch point。Fig. 3 is the Cleaning Principle schematic diagram of the contactor control device of the embodiment of the present invention。When finger 300 touch sensing unit, will be equivalent to be divided into sensing unit the first and second two resistance R1, R2, the proportionate relationship between the resistance of the first resistance R1 and the second resistance R2 is relevant to the position of touch point。Such as, as described in Figure 3, time nearer with the first electrode 21 when touch point, then the first resistance R1 is just less, and the second resistance R2 is just bigger；Anyway, time nearer with the second electrode 22 when touch point, then the first resistance R1 is just relatively big, and the second resistance R2 is just less。Therefore, by the detection of the first resistance R1 and the second resistance R2 is assured that position on sensing unit 2, the touch point。
In an embodiment of the present invention, the first resistance R1 and the resistance value of the second resistance R2 can be detected in several ways, such as can by one or more in the detected value of electric current, the detected value of self-capacitance, the detected value of level signal of self-capacitance and the change in electrical charge detection values of self-capacitance, thus obtain the first resistance R1 and the second resistance R2 according to these detected values。Additionally, in an embodiment of the present invention, the detection of above-mentioned detected value can carry out (obtaining the first charging detected value and the second charging detected value) when self-capacitance is charged, it is possible to carry out (obtaining the first discharge examination value and the second discharge examination value) when self-capacitance discharges。Additionally, the detection carried out when charging and discharging can adopt various ways。
It should be noted that at least one in charging and discharging carries out from the first electrode 21 and the second electrode 22 such that it is able to 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 when charge or discharge through the first resistance R1 and the second resistance R2, thus the first detected value detected and the second detected value can react the difference between the first resistance R1 and the second resistance R2。
In an embodiment of the present invention, it usually needs fill twice electricity and perform twice at detection, charging includes simultaneously from the situation of the first electrode 21 and the charging of the second electrode 22。In certain embodiments, it is also possible to perform twice at electric discharge。For convenience's sake, twice charging and twice detection all it are by below in an example。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 R1 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 R2。
Specifically, include but not limited to that following several concrete metering system detects according to embodiments of the invention:
1, first level signal is applied so that self-capacitance to be charged (described self-capacitance sensing unit be touched generation) to the first electrode 21 of sensing unit and the second electrode 22；Then it is charged and detects obtaining the first charging detected value and the second charging detected value from the first electrode 21 and/or the second electrode 22。In this embodiment, owing to charging carries out from the first electrode 21 and the second electrode 22, therefore detection can detect from the first electrode 21, it is also possible to detects from the second electrode 22, or detects respectively from the first electrode 21 and the second electrode 22。It can further be stated that, in this embodiment, can carry out from the charging of the first electrode 21 and the second electrode 22 simultaneously, also can individually carry out, such as the first electrode 21 and the second electrode 22 are applied identical level signal so that self-capacitance to be charged simultaneously, in other embodiments, the level signal the first electrode 21 and the second electrode 22 applied can also be different；Or, it is also possible on the first electrode 21, first apply a level signal, on the second electrode 22, apply identical level signal or different level signals afterwards again。Similarly, can carry out from the detection of the first electrode 21 and the second electrode 22, it is possible to carry out respectively simultaneously。In the following embodiments, detection can carry out with charging simultaneously, or carries out respectively。
2, level signal is applied at twice so that self-capacitance is performed twice at charging to the first electrode 21 of sensing unit or the second electrode 22；Carry out detecting to obtain the first charging detected value and the second charging detected value from the first electrode 21 and/or the second electrode 22 after charging every time。In this embodiment, owing to charging carries out from the first electrode 21 or the second electrode 22, therefore detection needs to carry out respectively from the first electrode 21 and the second electrode 22, wherein, can carry out from the detection of the first electrode 21 and the second electrode 22, it is possible to carry out respectively simultaneously。Optionally, in addition, it is also possible to perform twice at charging at the first electrode 21, and perform twice at detection from the first electrode 21, or, perform twice at charging from the second electrode 22, perform twice at detection at the second electrode 22。When charging for twice from an electrode, respectively by another electrode ground connection or connect high resistant to change the state of another electrode。Such as when applying level signal so that self-capacitance is performed twice at charging twice respectively to the first electrode 21 of sensing unit, wherein, by described second electrode 22 ground connection in a charging process in twice charging, described second electrode 22 is connect as high resistant by another charging process；When applying level signal so that self-capacitance is performed twice at charging twice respectively to the second electrode 22 of sensing unit, by described first electrode 21 ground connection in a charging process in twice charging, described first electrode 21 is connect as high resistant by another charging process。Accordingly even when be carried out twice charging at the first electrode 21, change due to the second electrode 22 state, it also is able to perform twice at detection at the first electrode 21, 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 21 of sensing unit and the second electrode 22；Then the first electrode 21 and/or the second electrode 22 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 21 and/or the second electrode 22。In this embodiment, owing to self-capacitance charging being carried out from the first electrode 21 and the second electrode 22, therefore electric discharge or detection just can carry out from the first electrode 21 and/or the second electrode 22。Specifically, for instance level signal can be applied so that self-capacitance to be charged to the first electrode 21 and the second electrode 22, or also can apply level signal during difference simultaneously。When discharging for twice can all by the first electrode 21 ground connection, or all by the second electrode 22 ground connection。
4, level signal is applied so that self-capacitance to be charged to the first electrode 21 of sensing unit or the second electrode 22；Then the first electrode 21 and the second electrode 22 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 21 and/or the second electrode 22。In this embodiment, owing to self-capacitance electric discharge being carried out from the first electrode 21 and the second electrode 22, therefore charging or detection just can carry out from the first electrode 21 and/or the second electrode 22。In this embodiment, twice charging also can all carry out from the first electrode 21, and by the second electrode 22 ground connection respectively or connect as high resistant。Similarly, twice charging also can all carry out from the second electrode 22, and by the first electrode 21 ground connection respectively or connect as high resistant。
5, level signal is applied so that self-capacitance to be charged to the first electrode 21 of sensing unit or the second electrode 22；Then control the first electrode 21 or the second electrode 22 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 21 and the second electrode 22 respectively afterwards。In this embodiment, owing to self-capacitance detection being carried out from the first electrode 21 and the second electrode 22, therefore charge or discharge can carry out from the first electrode 21 and/or the second electrode 22。In this embodiment, twice charging also can all carry out from the first electrode 21, and by the second electrode 22 ground connection respectively or connect as high resistant。Similarly, twice charging also can all carry out from the second electrode 22, and by the first electrode 21 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 R1 and the second resistance R2 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, above-mentioned first electrode 21 is identical with the function of the second electrode 22, and the two can exchange, therefore in the above-described embodiments, both can also detect from the second electrode 22 from the first electrode 21 detection, have electric current through the first resistance R1 and the second resistance R2 as long as can meet when detection。
Can be seen that in from the above, above-mentioned charging and detection mode for the embodiment of the present invention have a variety of change, but embodiments of the invention are in that according to the relation between the first resistance R1 and the second resistance R2, for instance proportionate relationship or other relations determine the position of touch point。Further, the relation between the first resistance R1 and the second resistance R2 requires over the charging of self-capacitance and/or electric discharge detects。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, can continually scan in an embodiment of the present invention, wait that finger 300 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 embodiment of the present invention, and those skilled in the art also can be extended according to above-mentioned thought, revise and modification。
Fig. 4 is the touch detecting method flow chart of the contactor control device of the embodiment of the present invention, together illustrates below in conjunction with the schematic diagram shown in Fig. 3。Touch detecting 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 21 of sensing unit and/or the second electrode 22。In this embodiment, identical level signal can be applied to the first electrode 21 and the second electrode 22, it is possible to apply different level signals。In other embodiments, it is possible to be only charged twice from the first electrode 21 or the second electrode 22, or first time charges from the first electrode 21 charging second time from the second electrode 22, or first time charges from the second electrode 22 charging second time from the first electrode 21。
If now 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 first electrode 21 and the second electrode 22 simultaneously。And if apply to the two ends of sensing unit respectively, then only need a capacitive detection module CTS。In one embodiment of the invention, the first detected value and the second detected value can for the capacitance charge variation delta Q1 detected from the first electrode 21 and/or the second electrode 22 and Δ Q2。By Δ Q1 and Δ Q2, the change in electrical charge amount of self-capacitance namely detected to obtain, it is possible to calculate the ratio of resistance R1 and R2, such that it is able to 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 Δ Q1 and Δ 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 the first resistance R1 and the second resistance R2 relation, for instance level signal, electric current etc. also all can adopt。In an embodiment of the present invention, the detection carried out from the first electrode 21 and the second electrode 22 can carry out simultaneously, it is also possible to carries out respectively。
In one embodiment of the invention, if detection carries out simultaneously, then need two capacitive detection module CTS the first electrode 21 and the second electrode 22 to be detected simultaneously。
In another embodiment of the present invention, may be used without a capacitive detection module CTS to detect, with reference in step S401, after by the first electrode 21 self-capacitance C1 being full of, namely self-capacitance C1 is detected by this capacitive detection module CTS by the first electrode 21。Then through the second electrode 22, self-capacitance C2 being charged, then self-capacitance C1 is detected by this capacitive detection module CTS again through the second electrode 22。
The phase place adopted when scanning this sensing unit due to 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 Δ Q1 and Δ Q2 from the first electrode 21 of sensing unit and the second electrode 22 respectively to the change in electrical charge amount that sensing unit detection obtains。In an embodiment of the present invention, capacitive detection module CTS can be the capacitive detection module CTS being currently known。In one embodiment of the invention, if adopting two capacitive detection module CTS, then owing to two capacitive detection module CTS can share multiple device, thus without the overall power increasing control chip。
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 Δ Q1 and Δ 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 Δ Q1 and Δ Q2 is less than threshold value, if it is less, judge that sensing unit is touched。Similarly, this threshold value is also required to according to size and the type touching detection components, 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 between the first electrode 21 and described self-capacitance and the second resistance between described second electrode 22 and described self-capacitance described in corresponding sensing unit 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 21 and/or the second electrode 22 obtains。Ibid, the coordinate on the sensing unit at C1 place is Δ Q2/ (Δ Q1+ Δ Q2)。
In an embodiment of the present invention, if the sensing body of sensing unit is general U-shape or generally L-shaped, then just can determine that the touch location on sensing body 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 body is general rectangular, then step S404 can only calculate the touch location on the first direction on the sensing body of sensing unit, and this first direction can be the length direction (horizontal direction of such as sensing unit) of sensing body。
If sensing body is rectangle, then also need to the touch location determined in a second direction。In one embodiment of the invention, first direction is the length direction of sensing body, and second direction is be perpendicular to the direction of first direction, and sensing body 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, it is often necessary to essential spacing at concrete sensing unit determined above go out finger (or other capacitive object) position。Finger contact area 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, NCentCentered by locate the label of sensing unit, 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 first aspect present invention proposes a kind of touch detection components according to above-mentioned thought。Below with reference to Fig. 6-Figure 41, touch detection components 100 according to embodiments of the present invention is described。
Touch detection components 100 according to embodiments of the present invention includes: substrate 1 and multiple sensing unit 2。Plurality of sensing unit 2 sets on substrate 1 and mutually disjoints。In an embodiment of the present invention, it is preferable that can be parallel to each other between disjoint sensing unit 2。Alternatively, can also be partly parallel between disjoint sensing unit 2, but sensing unit 2 mutually disjoints at least on substrate 1。But at this it should be noted that for multiple sensing units 2, however it is not limited to the structure shown in Fig. 5, sensing unit 2 also can adopt other structure, for instance part or all of sensing unit 2 has certain radian etc., and these all can be applicable in the present invention。
Alternatively, substrate 1 is general rectangular。Here " general rectangular " be interpreted as substrate 1 relative edge can portion absolute parallel, for instance can become a little angle, and each limit of substrate 1 can not be absolute straight。Each sensing unit 2 includes sensing body 20 and the first electrode 21 and the second electrode 22 being connected respectively with sensing body 20。The pin that first electrode 21 is corresponding with control chip 200 respectively with the second electrode 22 is connected。Sensing body 20 has multiple hollow-out parts 24, and multiple hollow-out parts 24 with pre-defined rule arrangement to limit the current path portion 25 for increasing the resistance R between the first electrode 21 and the second electrode 22 on sensing body 20, and this current path portion 25 is for the walking of electric current。Preferably, hollow-out parts 24 is through along the thickness direction of sensing body 20, and the thickness owing to sensing body 20 is smaller, and the through sensing body 20 of hollow-out parts 24 is easy to make and produce。
By arranging hollow-out parts 24 on sensing body 20, the path that can make the current path portion 25 of whole sensing body 20 is thinner or longer, be equivalent to the L in R=P*L/h formula increase or h minimizing, the resistance R between the first electrode 21 and the second electrode 22 is made to become big, thus obtaining the size that accuracy of detection meets the resistance of requirement, and then improve the linearity of sensing。Wherein, the pattern of hollow out or the size of lines and density degree all can affect the size of resistance R。In order to not affect self-capacitance, the pattern of hollow out or lines are thin as far as possible, since it is desired that the relative area of finger and sensing body contacts becomes increases greatly self-capacitance, if the pattern of hollow out or lines are too thick, the relative area of finger and sensing body can be reduced, thus affecting the self-capacitance variable that finger touches。
It is to be appreciated that in describing the invention, multiple hollow-out parts 24 should be interpreted broadly with pre-defined rule arrangement, i.e. multiple hollow-out parts 24 are arranged in the array of reservation shape on sensing body 20。Such as, alternatively, multiple hollow-out parts 24 can be spaced to turn up the soil along the length of sensing body 20 and be arranged to linear array；Alternatively, multiple hollow-out parts 24 include the hollow-out parts of the two kinds of shapes being alternately located on the length direction of sensing body。Specifically, sensing body 20 and hollow-out parts 24 will be described in detail in multiple embodiments below。
In one embodiment of the invention, sensing body 20 is general rectangular and has the first end (i.e. the left end of rectangle in figure) and the second end (i.e. the right-hand member of rectangle in figure), and the first electrode 21 is connected with the first end of sensing body 20 and the second electrode 22 is connected with the second end of sensing body 20。In this embodiment, due to the figure rule of rectangular configuration, therefore when finger lateral or longitudinal movement, the linearity is good, additionally, the spacing between two rectangular configuration can be identical, it is simple to calculate, thus improving calculating speed。
In one embodiment of the invention, preferably, hollow-out parts 24 is evenly spaced apart arrangement, such as, when sense body 20 be rectangle time, hollow-out parts 24 along sense body 20 the evenly-spaced arrangement of length direction, can also be called: the direction that hollow-out parts 24 extends on sensing body 20 along current path portion 25 is evenly-spaced, thus can increase the linearity, it is simple to calculate, and calculate speed and precision raising。
In another embodiment of the present invention, sensing body 20 includes first body 201 and the second body 202, first body 201 and the second body 202 can be rectangle and claim predetermined angle, such as first body 201 and the second body 202 may be orthogonal to each other to be formed as generally L-shaped (being hereinafter simply referred to as L-shaped sensing body), second end of first body 201 and the first end of the second body 202 are connected, and the first electrode 21 is connected with the first end of first body 201 and the second electrode 22 is connected with the second end of the second body 202。As it has been described above, first body 201 and the second body 202 may be orthogonal to each other。Thus so that sensing unit design is more regular, thus improving the coverage rate touching detection components, and the linearity of detection can also be improved。Alternatively, first body 201 and the second body 202 is equivalently-sized such that it is able to improve arithmetic speed。
In yet another embodiment of the present invention, sensing body 20 includes the first to the 3rd body 201,202,203。First body 201 and the second body 202 are connected to the two ends of the 3rd body 203 and are positioned at the same side of the 3rd body 203, first body 201 and the second body 202 respectively with the 3rd 203 one-tenth predetermined angulars of body。Preferably, the first to the 3rd body 201,202,203 can be rectangle, and first body 201 and the second body 202 are orthogonal with the 3rd body 203 (being hereinafter simply referred to as general U-shape sensing body) respectively。First electrode 21 is connected with the first end of first body 201 and the second electrode 22 is connected with the second end of the second body 202。Thus so that sensing unit design is more regular, thus improving the coverage rate touching detection components, and the linearity of detection can be improved。Alternatively, first body 201 and the second body 202 is equivalently-sized such that it is able to improve arithmetic speed。
First below with reference to Fig. 6-Figure 17 describe according to embodiments of the present invention have general rectangular sensing body 20 touch detection components 100 illustrate。
Sensing body 20 has the first end and the second end, first electrode 21 is connected with the first end of sensing body 20, second electrode 22 is connected with the second end of sensing body 20, current path portion 25 extends between the first and the second ends with curve mode, so that the length L in current path portion 25 is more than the length of sensing body 20 on the bearing of trend in current path portion 25, namely the length of flow of electric current is increased, thus increasing the resistance of sensing body 20。Such as, when sensing body 20 is rectangle, its length direction is first end direction to the second end, as shown in Fig. 7-Figure 10, first electrode 21 is connected to first end (i.e. the left end of rectangle in figure) of sensing body 20, second electrode 22 is connected to second end (i.e. the right-hand member of rectangle in figure) of sensing body 20, and wherein current flowing direction is in the drawings as shown by arrows。
Touch detection components 100 according to embodiments of the present invention, by arranging the hollow-out parts 24 on sensing body 20, the path making current path portion 25 is longer, thus the L added in R=P*L/h formula, and then make the resistance R between the first electrode 21 and the second electrode 22 become big, which thereby enhance the linearity of sensing。
Embodiment one,
In the present embodiment, multiple hollow-out parts 24 are divided into along bearing of trend linearly aligned first group of 24a and second group of 24b, hollow-out parts 24a in first group and the hollow-out parts 24b in second group is alternately arranged in the direction of extension and partly overlaps on the direction be orthogonal to bearing of trend, in other words, each of hollow-out parts 24a in first group arranges between adjacent two hollow-out parts 24b in the second set, hollow-out parts 24a in first group top edge of self induction body 20 on the width of sensing body 20 extends towards the lower limb sensing body 20, and the hollow-out parts 24a in first group is spaced apart with the lower limb of sensing body 20, hollow-out parts 24b in second group extends towards the top edge sensing body 20 at the lower limb of the width self induction body 20 of sensing body 20, and the hollow-out parts 24b in second group is spaced apart with the top edge of sensing body 20, the length sum of hollow-out parts 24a in first group and the hollow-out parts 24b in second group more than sensing body 20 width and as viewed from the length direction of sensing body 20 partly overlaps。
In first example of the embodiment of the present invention, each hollow-out parts 24 can be rectangle, as shown in Figure 6。It is to say, in these examples, first group of hollow-out parts 24a and second group of hollow-out parts 24b respectively multiple spaced apart rectangle, it is alternately arranged and partly overlaps in the vertical direction in the lateral direction。Certainly, the present invention is not limited to this, and in other examples, each hollow-out parts 24 can be also substantially I-shaped or substantially H-shaped, not shown go out。
In some examples of the embodiment of the present invention, each of which in first group of hollow-out parts 24a is substantially inverted T-shaped, and each of which in second group of hollow-out parts 24b is generally T-shaped。That is, as shown in Figure 7, in first group, substantially the hollow-out parts 24a of inverted T-shaped is spaced apart from each other in the lateral direction, and hollow-out parts 24b generally T-shaped in second group is spaced apart from each other in the lateral direction and hollow-out parts 24a in first group is alternately arranged and partly overlaps in the vertical direction。
Alternatively, the upper end of first group of hollow-out parts 24a is connected with the top edge of sensing body 20, and the lower end of second group of hollow-out parts 24b is connected with the lower limb of sensing body 20, the sense of current now applying level signal and producing to the first electrode 21 and/or the second electrode 22 when control chip 200 is as depicted by the arrows in figure 7, electric current is along curvilinear flow, the path making current path portion 25 is longer, thus the L added in R=P*L/h formula, and then the resistance R between the first electrode 21 and the second electrode 22 is made to become big。Certainly, the present invention is not limited to this。Alternatively, the upper end of first group of hollow-out parts 24a also can be connected with the top edge of sensing body 20, and the lower end of second group of hollow-out parts 24b is correspondingly connected (not shown go out) with the lower limb sensing body 20。
In other examples of the embodiment of the present invention, each of which in first group of hollow-out parts 24a is generally L-shaped, and each of which in second group of hollow-out parts 24b is substantially 7 font, first group of hollow-out parts 24a and second group of hollow-out parts 24b constitutes multipair, the generally L-shaped hollow-out parts 24a in every a pair hollow-out parts 24 and substantially 7 font hollow-out parts 24b toward each other, arranged in a crossed manner in the direction of extension and partly overlap in the direction of extension。That is, as shown in Figure 8, the hollow-out parts 24a of the generally L-shaped in first group is spaced apart from each other in the lateral direction, substantially 7 font hollow-out parts 24b in second group are spaced apart from each other and with the hollow-out parts 24a arranged crosswise in first group in the lateral direction to form multipair hollow-out parts relative to each other, and hollow-out parts 24a and the 24b of every centering partly overlaps in the vertical direction。
Alternatively, the upper end of first group of hollow-out parts 24a is connected with the top edge of sensing body 20, and the lower end of second group of hollow-out parts 24b is connected with the lower limb of sensing body 20, the sense of current now applying level signal and producing to the first electrode 21 and/or the second electrode 22 when control chip 200 is as shown by the arrows in fig. 8, electric current is along curvilinear flow, the path making current path portion 25 is longer, thus the L added in R=P*L/h formula, and then the resistance R between the first electrode 21 and the second electrode 22 is made to become big。Certainly, the present invention is not limited to this。Alternatively, the upper end of first group of hollow-out parts 24a also can be connected with the top edge of sensing body 20, and the lower end of second group of hollow-out parts 24b is correspondingly connected (not shown go out) with the lower limb sensing body 20。
In some examples of the embodiment of the present invention, hollow-out parts 24a in first group is substantially inverted V-shaped, hollow-out parts 24b in second group is substantially V-shaped, the adjacent Liang Ge branch of adjacent two the hollow-out parts 24b in second group in the direction of extension of each the hollow-out parts 24a in first group。That is, as shown in Figure 9, the hollow-out parts 24a of the substantially inverted V-shaped in first group is spaced apart from each other in the lateral direction, and the substantially V-shaped hollow-out parts 24b in second group is spaced apart from each other in the lateral direction and is alternately arranged with the hollow-out parts 24a in first group so that the Liang Ge branch of hollow-out parts 24a adjacent two hollow-out parts 24b in second group be disposed below in the lateral direction in first group。
Wherein, the upper end of first group of hollow-out parts 24a is connected with the top edge of sensing body 20, and the lower end of second group of hollow-out parts 24b is connected with the lower limb of sensing body 20, now when shown in the arrow in the sense of current such as Fig. 9 that control chip 200 applies level signal to the first electrode 21 and/or the second electrode 22 and produces, electric current is along curvilinear flow, the path making current path portion 25 is longer, thus the L added in R=P*L/h formula, and then the resistance R between the first electrode 21 and the second electrode 22 is made to become big。
In some examples of the embodiment of the present invention, each of which in first group of hollow-out parts 24a is substantially F shape, and each of which in second group of hollow-out parts 24b is substantially inverted-F, and first group of hollow-out parts 24a and second group of hollow-out parts 24b constitutes multipair, the substantially F shape hollow-out parts in every a pair hollow-out parts 24 is arranged in a crossed manner in the direction of extension with substantially inverted-F hollow-out parts and partly overlaps in the direction of extension。That is, as shown in Figure 10, the hollow-out parts 24a of the substantially F shape in first group is spaced apart from each other in the lateral direction, substantially inverted-F hollow-out parts 24b in second group is spaced apart from each other and with the hollow-out parts 24a arranged crosswise in first group in the lateral direction to form multipair hollow-out parts relative to each other, and hollow-out parts 24a and the 24b of every centering partly overlaps in the vertical direction。
Alternatively, the upper end of first group of hollow-out parts 24a is connected with the top edge of sensing body 20, and the lower end of second group of hollow-out parts 24b is connected with the lower limb of sensing body 20, the sense of current now applying level signal and producing to the first electrode 21 and/or the second electrode 22 when control chip 200 is as indicated by the arrows in figure 10, electric current is along curvilinear flow, the path making current path portion 25 is longer, thus the L added in R=P*L/h formula, and then the resistance R between the first electrode 21 and the second electrode 22 is made to become big。Certainly, the present invention is not limited to this。Alternatively, the upper end of first group of hollow-out parts 24a also can be connected with the top edge of sensing body 20, and the lower end of second group of hollow-out parts 24b is correspondingly connected (not shown go out) with the lower limb sensing body 20。
Embodiment two,
In the present embodiment, sensing body 20 has the first end and the second end, first electrode 21 is connected with the first end of sensing body 20, second electrode 22 is connected with the second end of sensing body 20, and current path portion 25 extends between the first and the second ends with curve mode so that the length L in current path portion 25 is more than the length of sensing body 20 on the bearing of trend in current path portion 25。
Wherein, current path portion 25 extends in the sectional area between the first end and the second end and in the plane being orthogonal to its bearing of trend less than sensing body 20 sectional area in the plane, in other words, current path portion 25 width h in the vertical direction is less than the width of sensing body 20。Such as when sensing body 20 and being rectangle, its length direction is first end direction to the second end, as shown in Figure 10-Figure 14, first electrode 21 is connected to first end (i.e. the left end of rectangle in figure) of sensing body 20, second electrode 22 is connected to second end (i.e. the right-hand member of rectangle in figure) of sensing body 20, and wherein current flowing direction is in the drawings as shown by arrows。
Touch detection components 100 according to embodiments of the present invention, by arranging the hollow-out parts 24 on sensing body 20, make the path in current path portion 25 longer and width reduces, in R=P*L/h formula, namely add length L reduce width h simultaneously, thus the resistance R added between the first electrode 21 and the second electrode 22, which thereby enhance the linearity of sensing。
In an example of the embodiment of the present invention, the side extended along bearing of trend of current path portion 25 proximity sensing body 20。Alternatively, as is illustrated by figs. 11 and 12, hollow-out parts 24 is generally T-shaped or generally L-shaped。Certain present invention is not limited to this, and hollow-out parts 24 can also be general rectangular, general U-shape, substantially H-shaped or other shapes such as substantially I-shaped (not shown go out)。Alternatively, the top of current path portion 25 proximity sensing body 20 and extending in left-right direction, in current direction such as Figure 11 and Figure 12 shown in the direction of arrow。Certainly, current path portion 25 can also the extending below and in left-right direction of proximity sensing body 20 (not shown go out)。
In another example of the embodiment of the present invention, the centrage extended along bearing of trend of current path portion 25 proximity sensing body 20。Wherein, multiple hollow-out parts 24 are divided into along bearing of trend linearly aligned first group and second group, first group of hollow-out parts 24a and second group of hollow-out parts 24b constitutes multipair, on the direction be orthogonal to bearing of trend toward each other, current path portion 25 is limited between the first hollow-out parts 24a and second group of hollow-out parts 24b hollow-out parts 24a in first group of each centering and the hollow-out parts 24b in second group。
Specifically, the upper end of first group of hollow-out parts 24a is connected with the top edge of sensing body 20, and the lower end of second group of hollow-out parts 24b is connected with the lower limb of sensing body 20, now when shown in the arrow in the sense of current such as Figure 13 and 14 that control chip 200 applies level signal to the first electrode 21 and/or the second electrode 22 and produces, electric current is along curvilinear flow, current path portion 25 width in the vertical direction is reduced, namely reduce the h in R=P*L/h formula, and then make the resistance R between the first electrode 21 and the second electrode 22 become big。
Alternatively, each of which in first group of hollow-out parts 24a is generally T-shaped, and each of which in second group of hollow-out parts 24b is substantially inverted T-shaped, as shown in figure 13, such as, generally T-shaped hollow-out parts 24a includes the second arm of the first approximate horizontal arm and general vertical, persons of ordinary skill in the art may appreciate that the first arm also can deviate predetermined angular and the second arm with horizontal direction and can deviate predetermined angular (not shown go out) with vertical direction。
Alternatively, each of which in first group of hollow-out parts 24a is generally L-shaped, and each of which in second group of hollow-out parts 24b is substantially inverted L-shaped, as shown in figure 14。Such as, the hollow-out parts 24a of generally L-shaped includes the second arm of the first approximate horizontal arm and general vertical, persons of ordinary skill in the art may appreciate that the first arm also can deviate predetermined angular and the second arm with horizontal direction and can deviate predetermined angular (not shown go out) with vertical direction。
Certainly, the present invention is not limited to this。In some examples of the present invention, first group of hollow-out parts 24a relative to each other and second group of hollow-out parts 24b can also be other shapes, in the vertical direction the width in current path portion 25 is reduced as long as can meet, such as general rectangular, general U-shape (such as blind end is the U-shaped of flat line or blind end is the U-shaped of arc), it it is such as also H-shaped or I-shaped, wherein H-shaped or I-shaped hollow-out parts include the first almost parallel arm and the second arm and the 3rd arm being connected between the first arm and the second arm, also can such as other shapes (not shown go out)。
Embodiment three,
In the present embodiment, current path portion 25 is two, the side extended along bearing of trend of one of them current path portion 25 proximity sensing body 20, another side extended along bearing of trend of another current path portion 25 proximity sensing body 20。So that the length of the flow path of the total length in current path portion 25 and electric current increases and width reduces。Such as when sensing body 20 and being rectangle, as seen in figs. 15-17, the top of one of them current path portion 25 proximity sensing body 20 and extending in left-right direction, and the extending below and in left-right direction of another current path portion 25 proximity sensing body 20。
Alternatively, multiple hollow-out parts 24 are along bearing of trend linear arrangement, and each hollow-out parts 24 is substantially X-shaped, as shown in figure 15。Certainly, the present invention is not limited to this。In some examples of the present invention, can also be other shapes along the linearly aligned multiple hollow-out parts 24 of bearing of trend, such as general rectangular, general U-shape (not shown go out), substantially other shapes such as H-shaped (as shown in figure 16) or substantially I-shaped (as shown in figure 17), can be maybe the combination of each shape above, on sensing body 20, form upper and lower two current path portions as long as can meet。
Touch detection components 100 according to embodiments of the present invention, by arranging the hollow-out parts 24 on sensing body 20, make the path in current path portion 25 longer and width reduces, in R=P*L/h formula, namely add length L reduce width h simultaneously, thus the resistance R added between the first electrode 21 and the second electrode 22, which thereby enhance the linearity of sensing。
Touch detection components 100 according to the above embodiment of the present invention, can adopt parallel rectangle sensing body 20 can reduce the structure complexity of device, such that it is able to ensureing to reduce on the basis of accuracy of detection manufacturing cost。
The touch detection components 100 according to the multiple embodiment of the present invention with L-shaped sensing body 20 is described below with reference to Figure 18-Figure 29。
L-shaped sensing body 20 has the first end (in Figure 18-29 upper end of L-shaped) and the second end (in Figure 18-29 lower end of L-shaped), its length direction is from the first end to the second end, first electrode 21 is connected with the first end of sensing body 20, second electrode 22 is connected with the second end of sensing body 20, current path portion 25 extends between the first and the second ends with curve mode so that the length L in current path portion 25 is more than the length of sensing body 20 on the bearing of trend (i.e. the length direction of L-shaped sensing body) in current path portion 25, current flowing direction in Figure 18-29 as shown by arrows。Touch detection components 100 according to embodiments of the present invention, by arranging the hollow-out parts 24 on L-shaped sensing body 20, the path making current path portion 25 is longer, thus the L added in R=P*L/h formula, and then make the resistance R between the first electrode 21 and the second electrode 22 become big, which thereby enhance the linearity of sensing。
For the sake of clarity, in the following description, so that the first body 201 of L-shaped sensing body 20 is horizontal-extending, the second body 202 vertically extends to example and illustrates, that is, the bearing of trend of first body 201 is the left and right directions in Figure 18-29, and the direction orthogonal with bearing of trend is the above-below direction in figure；The bearing of trend of the second body 202 is the above-below direction in Figure 18-29, and the direction orthogonal with bearing of trend is the left and right directions in figure。
Embodiment four,
In the present embodiment, multiple hollow-out parts 24 are divided into along bearing of trend linearly aligned first group of 24a and second group of 24b, and hollow-out parts 24a in first group and the hollow-out parts 24b in second group is alternately arranged in the direction of extension and partly overlaps on the direction be orthogonal to bearing of trend。
In first example of the embodiment of the present invention, each hollow-out parts 24 is rectangle, as shown in figure 18。That is, in these examples, first group of hollow-out parts 24a and second group of hollow-out parts 24b is respectively multiple spaced apart rectangles and be alternately arranged on the length direction that L-shaped senses body and partly overlap on the direction vertical with length direction, in other words, on first body 201, first group of hollow-out parts 24a and second group of hollow-out parts 24b is alternately arranged in the lateral direction and partly overlaps in the vertical direction, on the second body 202, first group of hollow-out parts 24a and second group of hollow-out parts 24b is alternately arranged in the vertical direction and partly overlaps in the lateral direction。Certainly, the present invention is not limited to this, and in other examples, each hollow-out parts 24 can be also substantially I-shaped or substantially H-shaped, not shown go out。
In some examples of the embodiment of the present invention, each of which in first group of hollow-out parts 24a is substantially inverted T-shaped, and each of which in second group of hollow-out parts 24b is generally T-shaped。That is, as shown in Figure 19, the hollow-out parts 24a of the substantially inverted T-shaped in first group is spaced apart from each other on the length direction of L-shaped sensing body, and the generally T-shaped hollow-out parts 24b in second group is spaced apart from each other on the length direction of L-shaped sensing body and is alternately arranged with the hollow-out parts 24a in first group and partly overlaps on the direction vertical with length direction。In other words, on first body 201, first group of hollow-out parts 24a and second group of hollow-out parts 24b is alternately arranged in the lateral direction and partly overlaps in the vertical direction, now, the upper end of first group of hollow-out parts 24a is connected with the top edge of first body 201, and the lower end of second group of hollow-out parts 24b is connected with the lower limb of first body 201。On the second body 202, first group of hollow-out parts 24a and second group of hollow-out parts 24b is alternately arranged in the vertical direction and partly overlaps in the lateral direction。Now, the right-hand member of first group of hollow-out parts 24a is connected with the right hand edge of first body 201, and the left end of second group of hollow-out parts 24b is connected with the left hand edge of first body 201。
Thus, the electric current applying level signal and producing to the first electrode 21 and/or the second electrode 22 when control chip 200 is along curvilinear flow, the path making current path portion 25 is longer, thus the L added in R=P*L/h formula, and then the resistance R between the first electrode 21 and the second electrode 22 is made to become big。
In other examples of the embodiment of the present invention, each of which in first group of hollow-out parts 24a is generally L-shaped, and each of which in second group of hollow-out parts 24b is substantially 7 font, first group of hollow-out parts 24a and second group of hollow-out parts 24b constitutes multipair, the generally L-shaped hollow-out parts 24a in every a pair hollow-out parts 24 and substantially 7 font hollow-out parts 24b toward each other, arranged in a crossed manner in the direction of extension and partly overlap in the direction of extension。That is, as shown in figure 20, the hollow-out parts 24a of the generally L-shaped in first group is spaced apart from each other on the length direction of L-shaped sensing body, substantially 7 font hollow-out parts 24b in second group are spaced apart from each other and with the hollow-out parts 24a arranged crosswise in first group in the longitudinal direction to form multipair hollow-out parts relative to each other, and hollow-out parts 24a and the 24b of every centering partly overlaps on the direction vertical with length direction。In other words, on first body 201, hollow-out parts 24a and the 24b of every centering is arranged in a crossed manner in the lateral direction and partly overlaps in the vertical direction, now, the upper end of first group of hollow-out parts 24a is connected with the top edge of first body 201, and the lower end of second group of hollow-out parts 24b is connected with the lower limb of first body 201。And on the second body 202, hollow-out parts 24a and the 24b of every centering is arranged in a crossed manner in the vertical direction and partly overlaps in the lateral direction。Now, the right-hand member of first group of hollow-out parts 24a is connected with the right hand edge of first body 201, and the left end of second group of hollow-out parts 24b is connected with the left hand edge of first body 201。
Thus, the sense of current applying level signal and producing to the first electrode 21 and/or the second electrode 22 when control chip 200 is as shown by the arrow in fig. 20, electric current is along curvilinear flow, the path making current path portion 25 is longer, thus the L added in R=P*L/h formula, and then the resistance R between the first electrode 21 and the second electrode 22 is made to become big。
In other examples of the embodiment of the present invention, hollow-out parts 24a in first group is substantially inverted V-shaped, hollow-out parts 24b in second group is substantially V-shaped, the adjacent Liang Ge branch of adjacent two the hollow-out parts 24b in second group in the direction of extension of each the hollow-out parts 24a in first group。That is, as shown in Figure 21, on first body 201, the hollow-out parts 24a of the substantially inverted V-shaped in first group is spaced apart from each other in left and right, and the substantially V-shaped hollow-out parts 24b in second group is spaced apart from each other in the lateral direction and is alternately arranged with the hollow-out parts 24a in first group so that the Liang Ge branch of hollow-out parts 24a adjacent two hollow-out parts 24b in second group be disposed below in the lateral direction in first group。On the second body 202, the hollow-out parts 24a of the substantially inverted V-shaped in first group is being spaced apart from each other up and down, and the substantially V-shaped hollow-out parts 24b in second group is spaced apart from each other in the vertical direction and is alternately arranged with the hollow-out parts 24a in first group so that the hollow-out parts 24a in first group is in the vertical direction across the Liang Ge branch of adjacent two hollow-out parts 24b of second group be arranged on the left of it。
Thus, when shown in the arrow in the sense of current such as Figure 21 that control chip 200 applies level signal to the first electrode 21 and/or the second electrode 22 and produces, electric current is along curvilinear flow, the path making current path portion 25 is longer, thus the L added in R=P*L/h formula, and then the resistance R between the first electrode 21 and the second electrode 22 is made to become big。
In the other example of the embodiment of the present invention, each of which in first group of hollow-out parts 24a is substantially F shape, and each of which in second group of hollow-out parts 24b is substantially inverted-F, and first group of hollow-out parts 24a and second group of hollow-out parts 24b constitutes multipair, the substantially F shape hollow-out parts 24 in every a pair hollow-out parts 24 is arranged in a crossed manner in the direction of extension with substantially inverted-F hollow-out parts 24 and partly overlaps in the direction of extension。That is, as shown in figure 22, the hollow-out parts 24a of the substantially F shape in first group is spaced apart from each other on the length direction of L-shaped sensing body, substantially inverted-F hollow-out parts 24b in second group is spaced apart from each other and with the hollow-out parts 24a arranged crosswise in first group to form multipair hollow-out parts relative to each other on the length direction of L-shaped sensing body, and hollow-out parts 24a and the 24b of every centering partly overlaps on the direction vertical with length direction。In other words, on first body 201, hollow-out parts 24a and the 24b of every centering is arranged in a crossed manner in the lateral direction and partly overlaps in the vertical direction, now, the upper end of first group of hollow-out parts 24a is connected with the top edge of first body 201, and the lower end of second group of hollow-out parts 24b is connected with the lower limb of first body 201。And on the second body 202, hollow-out parts 24a and the 24b of every centering is arranged in a crossed manner in the vertical direction and partly overlaps in the lateral direction。Now, the right-hand member of first group of hollow-out parts 24a is connected with the right hand edge of first body 201, and the left end of second group of hollow-out parts 24b is connected with the left hand edge of first body 201。
Thus, when shown in the arrow in the sense of current such as Figure 22 that control chip 200 applies level signal to the first electrode 21 and/or the second electrode 22 and produces, electric current is along curvilinear flow, the path making current path portion 25 is longer, thus the L added in R=P*L/h formula, and then the resistance R between the first electrode 21 and the second electrode 22 is made to become big。
Embodiment five,
In the present embodiment, sensing body 20 has the first end and the second end, first electrode 21 is connected with the first end of sensing body 20, second electrode 22 is connected with the second end of sensing body 20, and current path portion 25 extends between the first and the second ends with curve mode so that the length L in current path portion 25 is more than the length of sensing body 20 on the bearing of trend in current path portion 25。Wherein, current path portion 25 extends in the sectional area between the first end and the second end and in the plane being orthogonal to its bearing of trend less than sensing body 20 sectional area in the plane, in other words, on first body 201, current path portion 25 width h in the vertical direction is less than the width of sensing body 20。And on the second body 202, current path portion 25 width h in the lateral direction is less than the width of sensing body 20
Touch detection components 100 according to embodiments of the present invention, by arranging hollow-out parts 24 on sensing body 20, make the path in current path portion 25 longer and width reduces, in R=P*L/h formula, namely add length L reduce width h simultaneously, thus the resistance R added between the first electrode 21 and the second electrode 22, which thereby enhance the linearity of sensing。
In an example of the embodiment of the present invention, the side extended along bearing of trend of current path portion 25 proximity sensing body 20。Alternatively, as shown in figure 23 and figure 24, hollow-out parts 24 is generally T-shaped or L-shaped。Certain present invention is not limited to this, and hollow-out parts 24 can also be rectangle, general U-shape, H-shaped or other shapes such as I-shaped (not shown go out)。Alternatively, on first body 201, the top of current path portion 25 proximity sensing body 20 and extending in left-right direction, on the second body 202, the right of current path portion 25 proximity sensing body 20 and vertically extending, in current direction such as Figure 23 and Figure 24 shown in the direction of arrow。Certainly, the present invention is not limited to this, in another example, on first body 201, current path portion 25 can also the extending of proximity sensing body 20 below and in left-right direction, on the second body 202, the left side of current path portion 25 proximity sensing body 20 and vertically extending, not shown go out。
In another example of the embodiment of the present invention, the centrage extended along bearing of trend of current path portion 25 proximity sensing body 20。Wherein, multiple hollow-out parts 24 are divided into along bearing of trend linearly aligned first group and second group, first group of hollow-out parts 24a and second group of hollow-out parts 24b constitutes multipair, on the direction be orthogonal to bearing of trend toward each other, current path portion 25 is limited between the first hollow-out parts 24a and second group of hollow-out parts 24b hollow-out parts 24a in first group of each centering and the hollow-out parts 24b in second group。
Specifically, on first body 201, the upper end of first group of hollow-out parts 24a is connected with the top edge of sensing body 20, and the lower end of second group of hollow-out parts 24b is connected with the lower limb of sensing body 20, on the second body 202, the right-hand member of first group of hollow-out parts 24a and the right hand edge of the second body 202 connect, and the left hand edge of the left end of second group of hollow-out parts 24b and the second body 202 connects, now when control chip 200 is to shown in the arrow in the sense of current such as Figure 25 and 26 that the first electrode 21 and/or the second electrode 22 apply level signal and produce, electric current is along curvilinear flow, current path portion 25 width in the vertical direction is reduced, namely the h in R=P*L/h formula is reduced, and then make the resistance R between the first electrode 21 and the second electrode 22 become big。
Alternatively, each of which in first group of hollow-out parts 24a is generally T-shaped, and each of which in second group of hollow-out parts 24b is substantially inverted T-shaped, as shown in figure 25。Alternatively, each of which in first group of hollow-out parts 24a is generally L-shaped, and each of which in second group of hollow-out parts 24b is substantially inverted L-shaped, as shown in figure 26。Certainly, the present invention is not limited to this。In some examples of the present invention, first group of hollow-out parts 24a relative to each other and second group of hollow-out parts 24b can also be other shapes, such as rectangle, general U-shape, H-shaped or other shapes such as I-shaped (not shown go out), reduce the width in current path portion 25 in the vertical direction as long as can meet。
Embodiment six,
In the present embodiment, current path portion 25 is two, the side extended along bearing of trend of one of them current path portion 25 proximity sensing body 20, another side extended along bearing of trend of another current path portion 25 proximity sensing body 20。Shown in Figure 27-29, on first body 201, one of them current path portion 25 is close to the top of first body 201 and extends in left-right direction, and another current path portion 25 is close to the left side of first body 201 and extends in left-right direction。On the second body 202, a current path portion 25 is close to the right of the second body 202 and vertically extending, and another current path portion 25 is close to the left side of the second body 202 and vertically extending。
Alternatively, multiple hollow-out parts 24 are along bearing of trend linear arrangement, and each hollow-out parts 24 is substantially X-shaped, as shown in figure 15。Certainly, the present invention is not limited to this。In some examples of the present invention, can also be other shapes along the linearly aligned multiple hollow-out parts 24 of bearing of trend, other shapes such as such as rectangle, general U-shape (not shown go out), H-shaped (as shown in figure 16) or I-shaped (as shown in figure 17), can be such as also the combination of each shape above, on sensing body 20, form two current path portions as long as can meet。
Touch detection components 100 according to embodiments of the present invention, by arranging the hollow-out parts 24 on L-shaped sensing body 20, make the path in current path portion 25 longer and width reduces, in R=P*L/h formula, namely add length L reduce width h simultaneously, thus the resistance R added between the first electrode 21 and the second electrode 22, which thereby enhance the linearity of sensing。
Touch detection components 100 in the embodiment of the present invention adopts L-shaped sensing body 20, it is possible to efficiently reduce noise, improve the linearity of sensing。It is not only simple in structure, it is simple to make and reduce production cost。
Above with reference to Fig. 6-Figure 29, the touch detection components 100 with rectangle and L-shaped sensing body 20 is illustrated for example, but, those of ordinary skill in the art after having read technique scheme, be clearly understood that the program is applied to other shapes such as general U-shape sensing body 20 technical scheme in, therefore this to have general U-shape sensing body 20 touch detection components 100 be not described in detail。
It should be noted that with reference to Figure 30-Figure 41, the sensing body 20 of general U-shape includes the first to the 3rd body 201,202,203。First to the 3rd body 201,202,203 can be rectangle。Clear in order to show, sense first body 201, second body 202 of body 20 for general U-shape vertically to extend and the 3rd body 203 is horizontal-extending and illustrate, that is, the bearing of trend of first body the 201, second body 202 is the above-below direction in Figure 30-41, and the direction orthogonal with bearing of trend is the left and right directions in figure。The bearing of trend of the 3rd body 203 is the left and right directions in Figure 30-41, and the direction orthogonal with bearing of trend is the above-below direction in figure。
Wherein so that the length L in current path portion 25 is more than the length of sensing body 20 on the bearing of trend in current path portion 25 between the first and second ends of the sensing body 20 of to be current path portion 25 with curve mode the extend in general U-shape shown in Figure 30-34。Thereby increase the L in R=P*L/h formula, and then make the resistance R between the first electrode 21 and the second electrode 22 become big, which thereby enhance the linearity of sensing。
Figure 35-38 is illustrated that current path portion 25 extends between the first and the second ends so that the length L in current path portion 25 is more than the length of sensing body 20 on the bearing of trend in current path portion 25 with curve mode, and current path portion 25 extends in sectional area between the first end and the second end and in the plane being orthogonal to its bearing of trend less than sensing body 20 sectional area in the plane so that the path in current path portion 25 is longer and width reduces。In R=P*L/h formula, thus add L and reduce h, and then making the resistance R between the first electrode 21 and the second electrode 22 become big, which thereby enhancing the linearity of sensing。
Figure 39-Figure 41 is illustrated that current path portion 25 is two, the side extended along bearing of trend of one of them current path portion 25 proximity sensing body 20, another side extended along bearing of trend of another current path portion 25 proximity sensing body 20。So that the path in current path portion 25 is longer and width reduces, in R=P*L/h formula, namely adds length L reduce width h simultaneously, thus the resistance R added between the first electrode 21 and the second electrode 22, which thereby enhance the linearity of sensing。
Adopting general U-shape sensing body 20 in touch detection components 100 in the embodiment of the present invention, be not only simple in structure, it is simple to make, institute is leaded, and all same, design is convenient, reduces silver and starches cost and can reduce production cost。
In some embodiments of the invention, touch in detection components 100 and can include multiple L-shaped sensing unit or general U-shape sensing unit 2, namely multiple L-shaped sensing body or general U-shape sensing door body 20 are included, as shown in Figure 42 and Figure 43, the length of each sensing door body 20 is different, mutually nested between multiple sensing door body 20。In an embodiment of the present invention, so-called mutually nested refer to outer around sensing body correspondingly surround the sensing body of inner side, so can ensure reach while precision bigger coverage rate, and reduce the complexity of computing, improve the response speed touching detection components。Certain those skilled in the art also can adopt other mutually nested modes to arrange sensing body according to the thought of Figure 42 and Figure 43。
Alternatively, the spacing between adjacent two sensing units 2 is equal, thus by multiple sensing units 2 being evenly dividing of both sides to touching detection components, thus improving arithmetic speed, can improve and calculating speed, as shown in figure 42。
Certainly in another embodiment of the present invention, spacing between adjacent two sensing units 2 can not also wait, as shown in figure 43, such as often touch in the centre touching detection components 100 due to user, therefore the spacing between the sensing unit 2 in touch detection components 100 centre can be reduced, thus improving the accuracy of detection in centre。
It should be noted that, above-mentioned L-shaped sensing body or general U-shape sensing door body 20 are the present invention preferably embodiment, it is obtained in that bigger coverage rate, but Figure 42 and Figure 43 can be carried out the change that some are equivalent by other embodiments of the present invention, for instance first body 201 and the second body 202 in general U-shape sensing door body 20 can be uneven。
Sensing unit 2 in the touch detection components 100 of the embodiment of the present invention adopts double-end monitor, namely the two ends of sensing unit 2 are respectively provided with electrode, and each electrode is all connected with the corresponding pin of control chip 200, the location to touch point can be realized when carrying out touching detection by sensing unit 2 self。
Advantageously, embodiments of the invention realize the determination of touch location by calculating ratio between the first resistance R1 and the second resistance R2, 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。Additionally, due to any one can be all the rectangle of regular shape in the first of the embodiment of the present invention to the 3rd body, therefore relative to irregular shapes such as current rhombus or trianglees, it is also possible to improve the linearity further。
It will be appreciated by those skilled in the art that, for sensing unit 2, as long as the length of sensing body 20 meets touches detection components requirement, and different from the control chip 200 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。
Figure 44 be the embodiment of the present invention touch detection components 100 in general U-shape sensing unit schematic diagram when being touched。As can be seen from Figure 44, first electrode is 21, second electrode is 22, touch location is close to the second electrode 22, the length assuming sensing unit 2 is 10 unit lengths, and sensing unit 2 is evenly divided into 10 parts, wherein, the length of the 3rd body 203 of sensing unit 2 is 4 unit lengths, and the length of first body 201 and the second body 202 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 R1) of the first electrode 21 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 21 place, knows, touch point is positioned at the position of 2 unit lengths in distance the second electrode 22 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 Figure 44 it can be seen that the calculation of touch detection components according to embodiments of the present invention is very simple, therefore, it is possible to be greatly enhanced the response speed touching detection components 100 detection。
Figure 45 be the embodiment of the present invention touch detection components 100 in L-shaped sensing unit schematic diagram when being touched。As can be seen from Figure 45, first electrode is 21, second electrode is 22, touch location is close to the second electrode 22, assume that the length sensing body 20 is 10 unit lengths, and sensing body is evenly divided into 10 parts, wherein, the length of first body 201 is 5 unit lengths, and the length of the second body 202 is 5 unit lengths。Through detection, knowing that the ratio of the first resistance R1 and the second resistance R2 is 9: 1, namely the length (being embodied by the first resistance R1) of the first electrode 21 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 21 place, knows, touch point is positioned at the position of 1 unit length in distance the second electrode 22 place。
As can be seen from Figure 45, the calculation of touch detection components according to embodiments of the present invention is very simple, therefore, it is possible to be greatly enhanced the response speed touching detection components detection。
In sum, contactor control device according to embodiments of the present invention, by the electrode 21,22 at sensing unit 2 two ends is applied level signal, if this sensing unit 2 is touched, then this sensing unit 2 can form self-capacitance, therefore this self-capacitance can be charged by the level signal by applying, and determines touch location in a first direction according to the proportionate relationship between the first resistance R1 and the second resistance R2。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 touch point is in the position touching detection components。
Portable electric appts according to embodiments of the present invention can include the touch detection components 100 described with reference to above-described embodiment。Portable electric appts according to embodiments of the present invention can include with reference to above-described embodiment describe contactor control device。Other of portable electric appts according to embodiments of the present invention constitute such as frame structure and control composition and wait and operation is all known for those of ordinary skills, are not detailed herein。
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " 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, it will be understood by those skilled in the art that: these embodiments can being carried out multiple change, amendment, replacement and modification when without departing from principles of the invention and objective, the scope of the present invention is limited by claim and equivalent thereof。

Claims (15)

1. one kind touches detection components, it is characterised in that including:
Substrate；With
Multiple sensing units, the plurality of sensing unit is located on described substrate and mutually disjoints, each described sensing unit includes sensing body and the first electrode and the second electrode, described sensing body is rectangle, described sensing body has multiple hollow-out parts, the plurality of hollow-out parts arranges with pre-defined rule to limit the current path portion for increasing the resistance between described first and second electrodes on described sensing body, described current path portion extends in curve mode between the first end and second end of described sensing body so that length in described current path portion in their extension direction is more than the length of described sensing body。
2. touch detection components as claimed in claim 1, it is characterized in that, the plurality of openwork part is along described bearing of trend linearly aligned first group and second group, the hollow-out parts in described first group and the hollow-out parts one_to_one corresponding in described second group, is alternately arranged and partly overlaps on the direction being orthogonal to described bearing of trend on described bearing of trend。
3. touch detection components as claimed in claim 2, it is characterised in that each described hollow-out parts is rectangle, I-shaped or H-shaped。
4. touch detection components as claimed in claim 2, it is characterised in that each of which in described first group of hollow-out parts is inverted T-shaped, and each of which in described second group of hollow-out parts is T-shaped。
5. touch detection components as claimed in claim 2, it is characterized in that, each of which in described first group of hollow-out parts is L-shaped, and each of which in described second group of hollow-out parts is 7 fonts, described first group of hollow-out parts and second group of hollow-out parts constitute multipair, the L-shaped hollow-out parts in every a pair hollow-out parts with 7 font hollow-out parts toward each other, arranged in a crossed manner and partly overlap on described bearing of trend on described bearing of trend。
6. touch detection components as claimed in claim 2, it is characterized in that, hollow-out parts in described first group is inverted V-shaped, hollow-out parts in described second group is V-arrangement, and each hollow-out parts in described first group of hollow-out parts is the adjacent Liang Ge branch of adjacent two hollow-out parts in described second group on described bearing of trend。
7. touch detection components as claimed in claim 2, it is characterized in that, each of which in described first group of hollow-out parts is F shape, and each of which in described second group of hollow-out parts is inverted-F, and described first group of hollow-out parts and second group of hollow-out parts constitute multipair, the F shape hollow-out parts in every a pair hollow-out parts and inverted-F hollow-out parts are arranged in a crossed manner and partly overlap on described bearing of trend on described bearing of trend。
8. touch detection components as claimed in claim 1, it is characterised in that described hollow-out parts is through along the thickness direction of described sensing body。
9. touch detection components as claimed in claim 1, it is characterised in that described hollow-out parts is evenly spaced apart arrangement。
10. touch detection components as claimed in claim 1, it is characterised in that described substrate is rectangle。
11. a contactor control device, it is characterised in that including:
Touching detection components, described touch detection components is the touch detection components as according to any one of claim 1-10；With
Control chip, described control chip is connected with described first electrode and the second electrode, described control chip is configured for applying level signal to produce the electric current flowed between described first and second electrodes by described current path portion to described first electrode and/or the second electrode, for the self-capacitance charging produced to described sensing body when being touched by described electric current, during for being touched at the sensing body at least one described sensing unit being detected, calculate the proportionate relationship between the second resistance between the first resistance and described second electrode and the described self-capacitance of at least one sensing unit described between described first electrode and the described self-capacitance of at least one sensing unit described, and for determining the touch location that the sensing body of at least one described sensing unit described is touched according to the proportionate relationship between described first resistance and described second resistance。
12. contactor control device as claimed in claim 11, 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 between the first detected value and the second detected value that obtain from described first electrode and/or the second electrode detection calculates and obtains。
13. contactor control device as claimed in claim 11, it is characterised in that described control chip includes one or two capacitive detection module CTS。
14. a portable electric appts, it is characterised in that include the touch detection components as described in any one of claim 1-10。
15. a portable electric appts, it is characterised in that include the contactor control device as described in any one of claim 11-13。
CN201210093649.3A 2011-07-26 2012-04-01 Touch detection components, contactor control device and portable electric appts Expired - Fee Related CN102902441B (en)

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TW101214478U TWM470979U (en) 2011-07-26 2012-07-26 Touch detecting assembly, touch sensitive device and portable electronic apparatus
TW101126935A TWI485604B (en) 2011-07-26 2012-07-26 Touch detecting assembly, touch sensitive device and portable electronic apparatus
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CN2011205738057U Expired - Lifetime CN202795313U (en) 2011-07-26 2011-12-31 Touch control device and portable electronic device
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CN2011205732173U Expired - Lifetime CN202548804U (en) 2011-07-26 2011-12-31 Touch device and portable electronic device
CN2011205733797U Expired - Lifetime CN202795310U (en) 2011-07-26 2011-12-31 Touch control device and portable electronic device
CN201110459295.5A Active CN102902430B (en) 2011-07-26 2011-12-31 Touch detecting method and contactor control device
CN201110459466.4A Active CN102902437B (en) 2011-07-26 2011-12-31 Touch-screen testing equipment and contactor control device
CN201110459293.6A Active CN102902429B (en) 2011-07-26 2011-12-31 Touch detecting method and contactor control device
CN2011205734304U Expired - Lifetime CN202795311U (en) 2011-07-26 2011-12-31 Touch control device and portable electronic device
CN2011205732224U Expired - Lifetime CN202795309U (en) 2011-07-26 2011-12-31 Touch control device and portable electronic device
CN2011205736297U Expired - Lifetime CN202600660U (en) 2011-07-26 2011-12-31 Touch control device and portable electronic equipment
CN201110459482.3A Active CN102902439B (en) 2011-07-26 2011-12-31 Touch detecting method and contactor control device
CN201110459316.3A Active CN102902432B (en) 2011-07-26 2011-12-31 Touch detecting method and contactor control device
CN201110459486.1A Active CN102902440B (en) 2011-07-26 2011-12-31 Touch detecting method and contactor control device
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CN201110459115.3A Active CN102902427B (en) 2011-07-26 2011-12-31 Touch detecting method and contactor control device
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CN201210093687.9A Expired - Fee Related CN102902399B (en) 2011-07-26 2012-04-01 Touch detection components, contactor control device and a kind of portable electric appts
CN2012201340878U Expired - Lifetime CN202649961U (en) 2011-07-26 2012-04-01 Touch detection assembly, touch control device and portable electric equipment
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CN201220134083XU Expired - Lifetime CN202649960U (en) 2011-07-26 2012-04-01 Portable electric equipment, touch detection assembly and touch control device
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CN201210093681.1A Expired - Fee Related CN102902443B (en) 2011-07-26 2012-04-01 A kind of touch detection components, contactor control device and portable electric appts
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CN201110459313.XA Active CN102902431B (en) 2011-07-26 2011-12-31 Touch detecting method and contactor control device
CN2011205734681U Expired - Lifetime CN202795312U (en) 2011-07-26 2011-12-31 Touch control device and portable electronic device
CN2011205734658U Expired - Lifetime CN202548805U (en) 2011-07-26 2011-12-31 Touch screen detection equipment, touch device and portable electronic equipment
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CN201210093681.1A Expired - Fee Related CN102902443B (en) 2011-07-26 2012-04-01 A kind of touch detection components, contactor control device and portable electric appts
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Granted publication date: 20160622