CN102902444B - Touch detection components, a kind of contactor control device and portable electric appts - Google Patents

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

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Publication number
CN102902444B
CN102902444B CN201210094078.5A CN201210094078A CN102902444B CN 102902444 B CN102902444 B CN 102902444B CN 201210094078 A CN201210094078 A CN 201210094078A CN 102902444 B CN102902444 B CN 102902444B
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electrode
hollow
out parts
sensing
group
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CN102902444A (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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    • 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, 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 includes the first body each other in predetermined angular and the second body, second end of described first body is connected with the first end of described second body, described first electrode is connected with the first end of described first body and described second electrode is connected with the second end of described second body, 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.Touch detection components according to the present invention, the size of the resistance needed for available 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, a kind of contactor control device and portable electric appts
Technical field
The present invention relates to electronic device design and manufacturing technology field, particularly relate to a kind of touch detection components, have described Touch contactor control device and the portable electric appts of detection components.
Background technology
Touch detection components (touch screen) at present at mobile phone, PDA (personal digital assistant), GPS (global positioning system System), the electronic equipment such as PMP (MP3, MP4 etc.), even panel computer is applied.Touch screen has Touch control operation is simple, convenient, the advantage of hommization, therefore touch screen be expected to become the optimal interface of human-computer interaction and Portable set is widely applied.
Capacitance touch detection components is typically divided into self-capacitance and mutual capacitance type two class.Existing monolayer self-capacitance touch screen It is the scanning of the bar shaped made at the useful ITO of glass surface (Indium Tin Oxides, nano indium tin metal-oxide) Electrode.ITO is a kind of conductive materials having fixed resistance rate, and its comparison of coherence on base material is high, from touch screens The linearity just may certify that this point.These electrodes and the surrounding such as ground and circuit constitute the two poles of the earth of an electric capacity. Will be connected in parallel with a capacitor in circuit when touching with hands or felt pen when, so that total in this scan line Body capacitance amount changes.Scanning when, control 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, thus reach human computer conversation's exchange.Ordinary circumstance Lower capacitance touch screen is to match work together with TFT (Thin Film Transistor, TFT) LCD Make, and be located in above LCD.
Fig. 1 shows that a kind of tradition self-capacitance touches detection components.This self-capacitance touches detection components mainly to be had double The diamond structure sensing unit 100 ' and 200 ' of layer, its Cleaning Principle is to scan X-axis and Y-axis respectively, if detection To the capacitance variations in certain cross point beyond preset range, then using the cross point of this row and column as touch coordinate.Though So this self-capacitance touches the linearity of detection components preferably, 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 is at capacitance change There will be coordinate drift in the case of the least, affected greatly by external interference.
Fig. 2 a shows that another kind of tradition self-capacitance touches detection components.This self-capacitance touches detection components and uses three Dihedral figure screen structure.This self-capacitance touch detection components include substrate 300 ', be arranged on substrate 300 ' many Multiple electrodes 500 ' that individual triangle sensing unit 400 ' is connected with each triangle sensing unit 400 '.Fig. 2 b illustrates 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 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, institute A deviation is there is with X-coordinate.From above-mentioned principle it can be seen that traditional triangle sensing unit is single-ended detection, I.e. only from an angle detecting, then calculated the coordinate of both direction by algorithm.Although this self-capacitance touches detection Modular construction is simple, but does not has the capacitive sensing for screen and be optimized, and capacitance change is little, thus causes letter Make an uproar ratio not.Additionally, due to this sensing unit is triangle, when finger transverse shifting, area is not linear increase, Therefore the linearity is poor, result in coordinate calculating and offsets, and the linearity is the best.
Additionally, the capacitance change of traditional capacitance sensing unit output is the least, reach flying method level, its cable stray capacitance Existence, measuring circuit is had higher requirement.And, stray capacitance can be with temperature, position, inner electric field and outer electric field The factors such as distribution affect and change, and measured capacitance signal is even flooded in interference.Additionally, for monolayer electric capacity, Owing to the impact of Vcom level signal can form serious interference to inductance capacitance, wherein, Vcom level signal be for Prevent lcd screen liquid crystal aging from not stopping the level signal of upset.
Summary of the invention
The application is based on inventor's understanding to following facts: the sensing element of traditional monolayer self-capacitance touch screen is bilateral The bar shaped of lead-in wire.After the size of screen determines, the size of this bar shaped determines the most substantially.The width of bar shaped sensing element Degree is about 5mm, and this width broadens can affect the linearity, and this narrow width will increase passage sensing element.Bar shaped Length be exactly the length of touch screen substantially.After the length and width of bar shaped determine, the resistance between the two ends of this bar shaped is just Determine.Resistance R=P*L/h, wherein, L is the length of sensing element, and h is the height of sensing element, and P is ITO Sheet resistance (that is, make a square being plated in the ITO layer above base material, resistance the most from left to right, It is a basic parameter of ITO base material).The size of sheet resistance P is relevant with the thickness of ITO layer.And to ITO in this area Sheet resistance only has several limited standard value.Thus, when making the touch of monolayer self-capacitance with the base material of fixing ITO sheet resistance After screen, the resistance R of every can be calculated.But, the principle touched due to detection finger is to calculate the ratio of resistance Value, if resistance R is the biggest or the least accuracy of detection that all can affect, wherein parameter P is that base material determines, L and h is Touch screen size determines, can not arbitrarily change, if so sensing element makes simple bar shaped, resistance during design It is frequently not the value of most suitable measurement.
Present invention aims to solve one of above-mentioned technical problem the most to a certain extent, 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；Single with multiple sensings Unit, the plurality of sensing unit is located on described substrate and mutually disjoints, and each described sensing unit includes sensing Body and the first electrode being connected with described sensing body respectively and the second electrode, described sensing body has multiple engraving Sky portion, the plurality of hollow-out parts arranges with pre-defined rule to limit for increasing described first on described sensing body And the current path portion of the resistance that second between electrode.
Touch detection components according to embodiments of the present invention, by arranging hollow-out parts on sensing body, can make whole The path in the current path portion of sensing body is thinner or longer, is equivalent in R=P*L/h formula add L or subtract Lack h so that the resistance R between the first electrode and the second electrode becomes big, thus the resistance needed for obtaining accuracy of detection Size, 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: touch detection components, described tactile Touching detection components is according to the touch detection components described in first aspect present invention embodiment；And control chip, described control Coremaking sheet is connected with described first electrode and the second electrode, described control chip be configured for described first electrode and/ Or second electrode apply level signal with produce between described first and second electrodes by described current path portion flow Electric current, charge for the self-capacitance produced when being touched to described sensing body by described electric current, for examining Measure the sensing body of at least one described sensing unit when being touched, calculate the described of at least one sensing unit described Described second electrode of the first resistance between the first electrode and described self-capacitance and at least one sensing unit described and institute State the proportionate relationship between the second resistance between self-capacitance, and for according to described first resistance and described second resistance Between proportionate relationship determine the touch location that the sensing body of at least one described sensing unit described is touched.
Contactor control device according to embodiments of the present invention, real by calculating ratio between the first resistance R1 and the second resistance R2 The determination of existing touch location, improves certainty of measurement, improves the linearity.
The third aspect of the embodiment of the present invention also proposed a kind of portable electric appts, examines including touch-control as above Survey assembly.
The fourth aspect of the embodiment of the present invention also proposed a kind of portable electric appts, fills including touch-control as above Put.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become from the following description Substantially, or by the practice of the present invention recognize.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage will become bright from combining the accompanying drawings below description to embodiment Aobvious and easy to understand, 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, wherein feels Answering 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, its Middle 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, its Middle 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 is the sensing unit of the touch detection components according to one embodiment of the invention schematic diagram when being touched, its Middle sensing body is general U-shape；And
Figure 45 is the sensing unit of the touch detection components according to one embodiment of the invention schematic diagram when being touched, its Middle sensing body is generally L-shaped.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish phase Same or similar label represents same or similar element or has the element of same or like function.Below with reference to The embodiment that accompanying drawing describes is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " on ", D score, " left ", Orientation or the position relationship of the instruction such as " right ", " vertically ", " level ", " interior ", " outward " are based on orientation shown in the drawings or position Put relation, be for only for ease of and describe the present invention and simplify description rather than instruction or the device of hint indication 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 used for describing purpose, and it is not intended that instruction or hint 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 this feature.In describing the invention, except as otherwise noted, the implication of " multiple " It is two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or integratedly Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to by between intermediary Connect connected, can be the connection of two element internals.For the ordinary skill in the art, can concrete feelings 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 To include that the first and second features directly contact, it is also possible to include that the first and second features are not directly contact but pass through Other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " include Fisrt feature is directly over second feature and oblique upper, or is 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 it is 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.According to the present invention The contactor control device of embodiment includes touching detection components 100 and control chip 200, as it is shown in figure 5, touch detection group Part 100 includes substrate 1 and sets sensing unit 2 on substrate 1, and wherein sensing unit 2 includes sensing body 20 He The first electrode 21 and the second electrode 22 being connected with sensing body 20.As it is shown in figure 5, be one embodiment of the invention Contactor control device schematic diagram.In an embodiment of the present invention, if any multiple sensing units 2, the most disjoint sensing unit Can be parallel to each other between 2, or can also be the most parallel between disjoint sensing unit 2.Reality in the present invention Executing in example, substrate 1 can be single layer substrate.But at this it should be noted that for multiple sensing units 2, Being not limiting as its structure being Fig. 5, this sensing unit 2 also can use other structure, such as the one of sensing unit 2 Partly or entirely having certain radian etc., 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, and control chip 200 is configured for To the first electrode 21 and/or the second electrode 22 apply level signal with produce the first electrode 21 and the second electrode 22 it Between by the electric current of current path portion 25 flowing, for by electric current to sensing body 20 produces when being touched certainly Electric capacity charges, and for when the sensing body 20 at least one sensing unit 2 being detected is touched, calculates at least one The first resistance between first electrode 21 and the self-capacitance of sensing unit 2 and the second electrode of at least one sensing unit 2 The proportionate relationship between the second resistance between 22 and self-capacitance, and for according between the first resistance and the second resistance Proportionate relationship determines the touch location that the sensing body 20 of at least one sensing unit 2 is touched.
Specifically, the proportionate relationship between the first resistance and the second resistance is according to when to self-capacitance charge/discharge, from The proportionate relationship that one electrode and/or the second electrode are carried out between the first detected value and the second detected value that detection obtains calculates Arrive, as mentioned above to the first electrode and the charging of the second electrode, discharge or detect and can carry out simultaneously, it is possible to separately carry out. Determine that the sensing unit of correspondence is touched when touching detection components control chip 200 according to the first detected value and the second detected value When touching, then touch detection components control chip 200 and calculate the first resistance and the according to the first detected value and the second detected value The proportionate relationship of two resistance, thus determine whether touch location in a first direction, and according to corresponding sensing list The position of unit 2 determines touch location in a second direction.Finally touch detection components control chip 200 according to first Touch location on direction and the touch location in second direction just can determine that touch point is in the position touched in detection components Put.At this also, it should be noted in an embodiment of the present invention for the charging and discharging order of sensing unit is come Say and do not limit, the most in one embodiment, in the way of scanning, all of sensing unit 2 can be carried out successively Charging, the most in turn carries out discharge examination to it；In another embodiment, can be one by one to sensing unit 2 Charge and discharge, such as, after a sensing unit 2 being charged, with that it is carried out discharge examination, to this After sensing unit 2 has processed, more next sensing unit 2 is processed.In one embodiment of the present of invention In, touch the detection components control chip 200 first electrode 21 to sensing unit 2 and the second electrode 22 applies level Signal, to charge self-capacitance, touches detection components control chip 200 and enters from the first electrode 21 and/or the second electrode 22 Row charging detection is to obtain the first charging detected value and the second charging detected value.
Specifically, the contactor control device of the embodiment of the present invention uses novel self-capacitance detection mode, at sensing unit quilt During touch, at the touch point of sensing unit, it is produced from electric capacity, 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 touch sensing unit, will be quite In sensing unit being divided into the first and second two resistance R1, R2, the first resistance R1 and the resistance of the second resistance R2 Proportionate relationship between value is relevant to the position of touch point.Such as, as described in Figure 3, when touch point and the first electrode 21 Time nearer, then the first resistance R1 is the least, and the second resistance R2 is the biggest；Otherwise, when touch point and the second electrode 22 nearer time, then the first resistance R1 is the biggest, and the second resistance R2 is the least.Therefore, by the first resistance The detection of 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 be by the detected value of electric current, the detected value of self-capacitance, the detected value of level signal of self-capacitance and self-capacitance One or more in change in electrical charge detection values, thus obtain the first resistance R1 and the second resistance according to these detected values R2.It addition, in an embodiment of the present invention, the detection of above-mentioned detected value can carry out when charging self-capacitance (obtaining Obtain the first charging detected value and the second charging detected value), it is possible to carry out when self-capacitance discharges (obtaining the first electric discharge Detected value and the second discharge examination value).Additionally, the detection carried out when charging and discharging can use various ways.
It should be noted that at least one in charging and discharging is carried out from the first electrode 21 and the second electrode 22, It is thus possible to obtain two detected values of difference, the i.e. first detected value and second between reaction the first resistance and the second resistance Detected value.It is to say, need electric current when charge or discharge through the first resistance R1 and the second resistance R2, from And 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 carry out twice detection, charging includes simultaneously from the One electrode 21 and the situation of the second electrode 22 charging.In certain embodiments, it is also possible to carry out twice electric discharge.In order to For the sake of Fang Bian, the most all it is by twice charging and twice detection.It should be noted that carry out two Secondary charging and twice detection are only a kind of schemes of the embodiment of the present invention, and algorithm is relatively simple.But this area skill Art personnel increase charging and the number of times of detection also dependent on above-mentioned thought, such as, can carry out three chargings and detection, afterwards Calculate the first resistance R1 according to primary charging detected value and secondary charging detected value, fill further according to primary The charging detected value of electric-examination measured 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 with (institute that self-capacitance is charged to the first electrode 21 and second electrode 22 of sensing unit State self-capacitance to be touched generation at sensing unit)；Then be charged from the first electrode 21 and/or the second electrode 22 and Detect to obtain the first charging detected value and the second charging detected value.In this embodiment, it is from the first electricity owing to charging Pole 21 and the second electrode 22 are carried out, and therefore detection can detect from the first electrode 21, it is also possible to from the second electricity Pole 22 is detected, or detects respectively from the first electrode 21 and the second electrode 22.Also, it should be noted In this embodiment, the charging from the first electrode 21 and the second electrode 22 can be carried out simultaneously, it is possible to individually carries out, Such as the first electrode 21 and the second electrode 22 are applied simultaneously identical level signal so that self-capacitance to be charged, In other embodiments, the level signal applying the first electrode 21 and the second electrode 22 can also be different；Or, also First can apply a level signal on the first electrode 21, on the second electrode 22, apply identical level the most again Signal or different level signals.Similarly, can carry out from the detection of the first electrode 21 and the second electrode 22 simultaneously, Also can carry out respectively.In the following embodiments, detect and can carry out with charging simultaneously, or carry out respectively.
2, level signal is applied at twice so that self-capacitance to be carried out to the first electrode 21 or second electrode 22 of sensing unit Twice charging；Carry out detecting to obtain the first charging from the first electrode 21 and/or the second electrode 22 after charging every time Detected value and the second charging detected value.In this embodiment, due to charging be from the first electrode 21 or the second electrode 22 Carrying out, therefore detection needs to carry out respectively from the first electrode 21 and the second electrode 22, wherein, from the first electrode 21 Detection with the second electrode 22 can be carried out simultaneously, it is possible to carries out respectively.Optionally, in addition, it is also possible at the first electrode 21 carry out twice charging, and carry out twice detection from the first electrode 21, or, carry out twice filling from the second electrode 22 Electricity, carries out twice 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 to the first electrode 21 of sensing unit twice applying electricity respectively When ordinary mail number is to carry out twice charging to self-capacitance, wherein, by described second in a charging process in twice charging Electrode 22 ground connection, connects described second electrode 22 as high resistant in another charging process；When to the second of sensing unit When electrode 22 applies level signal so that self-capacitance is carried out twice charging twice respectively, once charging in twice charging By described first electrode 21 ground connection in journey, described first electrode 21 is connect as high resistant by another charging process.So Even having carried out twice charging at the first electrode 21, due to the change of the second electrode 22 state, it is also possible to first Electrode 21 carries out twice detection, can react the of proportionate relationship between the first resistance R1 and the second resistance R2 to obtain One detected value and the second detected value.
3, level signal is applied so that self-capacitance to be charged to the first electrode 21 and second electrode 22 of sensing unit；Then Control the first electrode 21 and/or the second electrode 22 ground connection so that self-capacitance to be discharged；Afterwards from the first electrode 21 and/or Two electrodes 22 carry out discharge examination to obtain described first discharge examination value and the second discharge examination value.In this embodiment, Owing to carrying out self-capacitance charging from the first electrode 21 and the second electrode 22, therefore discharging or detect just can be from the One electrode 21 and/or the second electrode 22 are carried out.Specifically, such as can be simultaneously to the first electrode 21 and the second electrode 22 Applying level signal is to be charged self-capacitance, or also can apply level signal during difference.Can when twice electric discharge 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 or second electrode 22 of sensing unit；Then Control the first electrode 21 and the second electrode 22 ground connection respectively so that self-capacitance to be discharged；The most respectively from the first electrode 21 He / or the second electrode 22 carry out discharge examination to obtain the first discharge examination value and the second discharge examination value.In this embodiment In, owing to self-capacitance electric discharge is carried out from the first electrode 21 and the second electrode 22, therefore charge or detect and just may be used Carry out from the first electrode 21 and/or the second electrode 22.In this embodiment, twice charging also can be all from the first electrode 21 Carry out, and by the second electrode 22 ground connection respectively or connect as high resistant.Similarly, twice charging also can be all from the second electrode 22 Carry out, 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 or second electrode 22 of sensing unit；Then Control respectively the first electrode 21 or the second electrode 22 ground connection with to self-capacitance discharge, the most respectively from the first electrode 21 He Second electrode 22 carries out discharge examination to obtain the first discharge examination value and the second discharge examination value.In this embodiment, Owing to carrying out self-capacitance detection from the first electrode 21 and the second electrode 22, therefore charge or discharge can be from first Electrode 21 and/or the second electrode 22 are carried out.In this embodiment, twice charging also can all be carried 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 be carried 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, it is also possible to carry out one-time detection when charging to obtain the first charging Detected value, electric discharge time carry out second time detect to obtain the second discharge examination value, further according to first charging detected value and Second discharge examination value obtains the proportionate relationship between the first resistance R1 and the second resistance R2.
It should be noted that in an embodiment of the present invention, above-mentioned first electrode 21 and the function phase of the second electrode 22 Together, and the two can exchange, and the most in the above-described embodiments, both can detect from the first electrode 21 can also be from second Electrode 22 detects, and has electric current through the first resistance R1 and the second resistance R2 as long as can meet when detection.
It can be seen that above-mentioned charging and detection mode for the embodiment of the present invention have a variety of change from foregoing description, But embodiments of the invention are according to the relation between the first resistance R1 and the second resistance R2, such as proportionate relationship or Other relations of person determine the position of touch point.Further, the relation between the first resistance R1 and the second resistance R2 The charging by self-capacitance and/or electric discharge is needed to detect.If sensing unit is not touched, then would not be with hands Be produced from electric capacity, therefore detect that the data of self-capacitance can be the least, be unsatisfactory for touch Rule of judgment, for this, Embodiments of the invention can continually scan for, wait that finger just starts after touching sensing unit to calculate, at this no longer Repeat.
In an embodiment of the present invention, in the way of scanning, corresponding voltage can be applied to multiple sensing units successively, Can also detect successively 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, this area Technical staff 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, former below in conjunction with shown in Fig. 3 Reason figure together illustrates.Touch detecting method comprises the following steps:
Step S401, to the two ends of sensing unit apply level signal, i.e. to sensing unit the first electrode 21 and/or Second electrode 22 applies level signal.In this embodiment, can apply identical to the first electrode 21 and the second electrode 22 Level signal, it is possible to apply different level signals.In other embodiments, it is possible to only from the first electrode 21 or the Two electrodes 22 are charged twice, or charge from the second electrode 22 from the first electrode 21 charging second time for the first time, Or charge from the first electrode 21 from the second electrode 22 charging second time for the first time.
If now sensing unit is touched by finger or other objects, then this sensing unit will be produced from electric capacity C1 (ginseng According to Fig. 3), just self-capacitance can be charged by the level signal applied.In an embodiment of the present invention, by right The charging of self-capacitance, can 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 needing corresponding two Individual capacitive detection module CTS detects from the first electrode 21 and the second electrode 22 simultaneously.And if respectively to sensing If the two ends of unit apply, the most only need a capacitive detection module CTS.In one embodiment of the present of invention In, the first detected value and the second detected value can be the electric capacity electricity detected from the first electrode 21 and/or the second electrode 22 Lotus variation delta Q1 and Δ Q2.By Δ Q1 and Δ Q2, the change in electrical charge amount of self-capacitance i.e. detected to obtain, it is possible to calculate The ratio of resistance R1 Yu R2, such that it is able to calculate the position of the abscissa at place, touch point, and self-capacitance C1 place Position.
Step S402, detects sensing unit from the two ends of sensing unit, to obtain the first detected value and the second inspection Measured value.In this embodiment, detection can be carried out when charging, it is possible to carries out when electric discharge.In the above example, One detected value and the second detected value are respectively Δ Q1 and Δ Q2.Become with the first detected value and the second detected value for electric charge below It is described as a example by change amount, but the first resistance R1 and other detected values of the second resistance R2 relation, example can be reacted As level signal, electric current etc. the most all can use.In an embodiment of the present invention, from the first electrode 21 and the second electrode 22 The detection carried out can be carried out simultaneously, it is also possible to carries out respectively.
In one embodiment of the invention, if detection is carried out simultaneously, then need two capacitive detection module CTS same Time the first electrode 21 and the second electrode 22 are detected.
In another embodiment of the present invention, it is possible to use a capacitive detection module CTS to detect, with reference to step In rapid S401, after being full of self-capacitance C1 by the first electrode 21, i.e. this capacitive detection module CTS passes through Self-capacitance C1 is detected by the first electrode 21.Then through the second electrode 22, self-capacitance C2 is charged, then Self-capacitance C1 is detected by this capacitive detection module CTS again by the second electrode 22.
Phase place owing to using when control chip scans this sensing unit is the most consistent with level signal, therefore for same Electric charge when charging for self-capacitance C1 is equal to the inverse ratio of they resistance.It is assumed that from the first electrode of sensing unit 21 and second electrode 22 change in electrical charge amount that sensing unit detection is obtained be Δ Q1 respectively and Δ Q2.Reality in the present invention Executing in example, capacitive detection module CTS can be the capacitive detection module CTS being currently known.An enforcement in the present invention In example, if using two capacitive detection module CTS, then can share many due to two capacitive detection module CTS Individual 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 be by judging that whether change in electrical charge amount Δ Q1 and Δ Q2 determines more than threshold value No it is touched.Certainly, in other embodiments of the invention, other judgment modes also can be set, such as, judge electric charge Whether variation delta Q1 and Δ Q2 be 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 determines.
Step S404, if it is determined that this sensing unit is touched, calculates institute in corresponding sensing unit the most further State the first resistance between the first electrode 21 and described self-capacitance and between described second electrode 22 and described self-capacitance second Proportionate relationship between resistance.And determine touching object according to the proportionate relationship between the first resistance and described second resistance The touch location of (such as finger).In an embodiment of the present invention, the ratio between the first resistance and described second resistance Example relation according to when to self-capacitance charge/discharge, carries out detecting obtaining from the first electrode 21 and/or the second electrode 22 Proportionate relationship between first detected value and the second detected value is calculated.Ibid, the seat on the sensing unit at C1 place Mark 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 pass through Ratio between first resistance and the second resistance just can determine that the touch location on sensing body, below with reference to specifically Example be described in detail.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, this first direction can be sense Answer the length direction (horizontal direction of such as sensing unit) of body.
If sensing body is rectangle, then also need to the touch location determined in a second direction.In the present invention one In embodiment, first direction is the length direction of sensing body, and second direction is to be perpendicular to the direction of first direction, sense Answer body to be horizontally disposed with or be vertically arranged.
Specifically, centroid algorithm can be used to calculate touch point touch location in a second direction, below to centroid algorithm Simply introduce.
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.It is single that finger contact area on draw runner or touch pad is typically larger than any sensing Unit.In order to use a center to calculate the position after touch, it is scanned verifying given biography to this array Sensor position is effective, and the requirement for a number of adjacent sensing unit signal is to be greater than default touch threshold. After finding the strongest signal, this signal and those be used to calculating center more than closing signals of touch threshold:
N C e n t = 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 Be touched the sequence number of sensing unit, and wherein i is more than or equal to 2.
Such as, when finger touches at Article 1 passage, and its capacitance change is y1, the capacitance variations on Article 2 passage When amount is y3 for the capacitance change on y2 and Article 3 passage.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 describes touch detection components 100 according to embodiments of the present invention.
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 disjoint sense Answer and can be parallel to each other between unit 2.Alternatively, can also be the most parallel between disjoint sensing unit 2, But sensing unit 2 mutually disjoints the most on substrate 1.But at this it should be noted that sense list for multiple For unit 2, however it is not limited to the structure shown in Fig. 5, sensing unit 2 also can use other structure, such as sense list Part or all of 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, such as can become a little angle, and each limit of substrate 1 can not be absolute straight.Each sensing Unit 2 includes the first electrode 21 and the second electrode 22 sensing body 20 and being connected with sensing body 20 respectively.The The pin that one electrode 21 is corresponding with control chip 200 respectively with the second electrode 22 is connected.Sensing body 20 has many Individual hollow-out parts 24, multiple hollow-out parts 24 arrange to limit for increasing first on sensing body 20 with pre-defined rule The current path portion 25 of the resistance R between electrode 21 and the second electrode 22, this current path portion 25 is for electric current Walking.Preferably, hollow-out parts 24 is through along the thickness direction of sensing body 20, owing to sensing the thickness ratio of body 20 Less, hollow-out parts 24 through sensing body 20 is easy to make and produce.
By arranging hollow-out parts 24 on sensing body 20, the current path portion 25 of whole sensing body 20 can be made Path thinner or longer, being equivalent to L in R=P*L/h formula increases or h reduces so that the first electrode 21 With the resistance R that second between electrode 22 becomes big, thus obtain the size that accuracy of detection meets the resistance of requirement, Jin Erti The high linearity of sensing.Wherein, the pattern of hollow out or the size of lines and density degree all can affect the big of resistance R Little.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 finger and sensing body contacts Relative area become and increase greatly self-capacitance, if the pattern of hollow out or lines are too thick, finger and sensing can be reduced The relative area of body, thus affect 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, That is, multiple hollow-out parts 24 is arranged in the array of reservation shape on sensing body 20.Such as, alternatively, multiple engrave Sky portion 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 hollow-out parts including the two kinds of shapes being alternately located on the length direction of sensing body.Specifically, sensing body 20 To describe in detail in following multiple embodiments with hollow-out parts 24.
In one embodiment of the invention, sensing body 20 for general rectangular and has the first end (i.e. rectangle in figure Left end) and the second end (i.e. the right-hand member of rectangle in figure), the first electrode 21 be connected with the first end of sensing body 20 and 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 easy to calculate, thus improves calculating speed.
In one embodiment of the invention, it is preferable that hollow-out parts 24 is evenly spaced apart arrangement, such as, sensing is worked as When body 20 is rectangle, hollow-out parts 24 is along the evenly-spaced arrangement of length direction of sensing body 20, it is also possible to be referred to as: The direction that hollow-out parts 24 extends on sensing body 20 along current path portion 25 is evenly-spaced, thus can increase line Property degree, it is simple to calculate, and calculate speed and precision and improve.
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 May be orthogonal to each other to be formed as generally L-shaped (hereinafter simply referred to as L-shaped sensing body) with the second body 202, the Second end of one body 201 and the first end of the second body 202 are connected, the first electrode 21 and first body 201 The first end be connected and the second electrode 22 be connected with the second end of the second body 202.As it has been described above, first body 201 and second body 202 may be orthogonal to each other.Thus so that sensing unit design more regular, thus improve right Touch the coverage rate of detection components, and the linearity of detection can also be improved.Alternatively, first body 201 and Two bodies 202 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 3rd The same side of body 203, first body 201 and the second body 202 become to make a reservation for the 3rd body 203 respectively Angle.Preferably, the first to the 3rd body 201,202,203 can be rectangle, first body 201 He Second body 202 is orthogonal with the 3rd body 203 (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 and the second end phase of the second body 202 Even.Thus so that sensing unit design is more regular, thus improve the coverage rate touching detection components, and permissible Improve the linearity of detection.Alternatively, first body 201 and the second body 202 equivalently-sized, it is thus possible to Enough improve arithmetic speed.
The sensing body 20 with general rectangular according to embodiments of the present invention in describing with reference to Fig. 6-Figure 17 first below Touch detection components 100 illustrate.
Sensing body 20 has the first end and the second end, and the first electrode 21 is connected with the first end of sensing body 20, the Two electrodes 22 are connected with the second end of sensing body 20, and current path portion 25 extends in first and second with curve mode Between end, so that length L in current path portion 25 is more than sensing body on the bearing of trend in current path portion 25 The length of 20, i.e. increases the length of flow of electric current, thus increases the resistance of sensing body 20.Such as sensing body 20 During for rectangle, its length direction is the direction of the first end to the second end, as shown in Fig. 7-Figure 10, and the first electrode 21 Being connected to sense first end (i.e. the left end of rectangle in figure) of body 20, the second electrode 22 is connected to sense body 20 The second end (i.e. the right-hand member of rectangle in figure), wherein current flowing direction is the most 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, makes The path obtaining current path portion 25 is longer, thus adds the L in R=P*L/h formula, and then makes the first electrode 21 With the resistance R that second between electrode 22 becomes 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 hollow-out parts 24b in second group is alternately arranged in the direction of extension and prolongs being orthogonal to The direction upper part stretching direction is overlapping, and in other words, each of hollow-out parts 24a in first group is arranged in the second set Adjacent two hollow-out parts 24b between, hollow-out parts 24a in first group sensing body 20 width on self-induction The top edge of body 20 is answered to extend towards the lower limb of sensing body 20, and hollow-out parts 24a in first group and sensing The lower limb of body 20 is spaced apart, and hollow-out parts 24b in second group is sensing the width self induction of body 20 originally The lower limb of body 20 towards sensing body 20 top edge extend, and hollow-out parts 24b in second group with sensing body The top edge of 20 is spaced apart, and the length sum of hollow-out parts 24a in first group and hollow-out parts 24b in second group is more than Sense the width of body 20 and partly overlap as viewed from the length direction of sensing body 20.
In first example of the embodiment of the present invention, each hollow-out parts 24 can be rectangle, as shown in Figure 6.Also That is, in these examples, first group of hollow-out parts 24a and second group of hollow-out parts 24b are 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, In other examples, each hollow-out parts 24 can be also the most I-shaped or substantially H-shaped, not shown.
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.It is to say, as shown in Figure 7, in first group Substantially hollow-out parts 24a of inverted T-shaped is spaced apart from each other in the lateral direction, hollow-out parts 24b generally T-shaped in second group It is spaced apart from each other in the lateral direction and hollow-out parts 24a in first group is alternately arranged and part weight in the vertical direction Folded.
Alternatively, the upper end of first group of hollow-out parts 24a is connected with the top edge of sensing body 20, and second group of hollow-out parts The lower end of 24b is connected with the lower limb of sensing body 20, now when control chip 200 is to the first electrode 21 and/or the As depicted by the arrows in figure 7, electric current, along curvilinear flow, makes the sense of current that two electrodes 22 apply level signal and produce The path obtaining current path portion 25 is longer, thus adds the L in R=P*L/h formula, and then makes the first electrode 21 With the resistance R that second between electrode 22 becomes big.Certainly, the present invention is not limited to this.Alternatively, first group of hollow-out parts The upper end of 24a also can with sensing body 20 top edge be connected, and the lower end of second group of hollow-out parts 24b correspondingly with sense The lower limb answering body 20 connects (not shown).
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 fonts, first group of hollow-out parts 24a and second group of hollow-out parts 24b constitutes multipair, generally L-shaped hollow-out parts 24a in every a pair hollow-out parts 24 and substantially 7 font hollow-out parts 24b that This relatively, the most arranged in a crossed manner and partly overlap in the direction of extension.It is to say, as shown in Figure 8, Hollow-out parts 24a of the generally L-shaped in first group is spaced apart from each other in the lateral direction, substantially 7 fonts in second group Hollow-out parts 24b is spaced apart from each other and multipair to be formed with the hollow-out parts 24a arranged crosswise in first group in the lateral direction Hollow-out parts relative to each other, and hollow-out parts 24a of every centering and 24b partly overlap 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 second group of hollow-out parts The lower end of 24b is connected with the lower limb of sensing body 20, now when control chip 200 is to the first electrode 21 and/or the As shown by the arrows in fig. 8, electric current, along curvilinear flow, makes the sense of current that two electrodes 22 apply level signal and produce The path obtaining current path portion 25 is longer, thus adds the L in R=P*L/h formula, and then makes the first electrode 21 With the resistance R that second between electrode 22 becomes big.Certainly, the present invention is not limited to this.Alternatively, first group of hollow-out parts The upper end of 24a also can with sensing body 20 top edge be connected, and the lower end of second group of hollow-out parts 24b correspondingly with sense The lower limb answering body 20 connects (not shown).
In some examples of the embodiment of the present invention, hollow-out parts 24a in first group is substantially inverted V-shaped, in second group Hollow-out parts 24b be substantially V-shaped, each hollow-out parts 24a in first group is in the direction of extension in second group The adjacent Liang Ge branch of adjacent two hollow-out parts 24b.It is to say, as shown in Figure 9, big in first group Hollow-out parts 24a of body inverted V-shaped is spaced apart from each other in the lateral direction, substantially V-shaped hollow-out parts 24b in second group It is spaced apart from each other in the lateral direction and is alternately arranged with hollow-out parts 24a in first group so that hollow out in first group The Liang Ge branch of portion 24a adjacent two hollow-out parts 24b in second group be disposed below in the lateral direction.
Wherein, the upper end of first group of hollow-out parts 24a is connected with the top edge of sensing body 20, and second group of hollow-out parts 24b Lower end is connected with the lower limb of sensing body 20, now electric to the first electrode 21 and/or second when control chip 200 The sense of current that pole 22 applies level signal and produces is as shown in the arrow in Fig. 9, and electric current is along curvilinear flow so that electricity The path in circulation flow path portion 25 is longer, thus adds the L in R=P*L/h formula, and then makes the first electrode 21 He Resistance R between second electrode 22 becomes 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, and the substantially F shape hollow-out parts in every a pair hollow-out parts 24 and substantially inverted-F hollow-out parts are at bearing of trend Go up the most arranged in a crossed manner and partly overlap in the direction of extension.It is to say, as shown in Figure 10, the substantially F shape in first group Hollow-out parts 24a be spaced apart from each other in the lateral direction, substantially inverted-F hollow-out parts 24b in second group is in right and left Upwards it 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, And hollow-out parts 24a of often centering and 24b partly overlap 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 second group of hollow-out parts The lower end of 24b is connected with the lower limb of sensing body 20, now when control chip 200 is to the first electrode 21 and/or the The sense of current that two electrodes 22 apply level signal and produce as indicated by the arrows in figure 10, electric current along curvilinear flow, The path making current path portion 25 is longer, thus adds the L in R=P*L/h formula, and then makes the first electrode 21 and the second resistance R between electrode 22 become big.Certainly, the present invention is not limited to this.Alternatively, engrave for first group The upper end of sky portion 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 It is connected (not shown) with the lower limb of sensing body 20.
Embodiment two,
In the present embodiment, sensing body 20 has the first end and the second end, the first electrode 21 and sensing body 20 First end is connected, and the second electrode 22 is connected with the second end of sensing body 20, and current path portion 25 prolongs with curve mode Stretch between the first and the second ends so that length L in current path portion 25 is big on the bearing of trend in current path portion 25 Length in sensing body 20.
Wherein, current path portion 25 extends between the first end and the second end and in the plane being orthogonal to its bearing of trend Sectional area less than sensing body 20 sectional area in the plane, in other words, current path portion 25 is in the vertical direction Width h less than sensing body 20 width.Such as when sensing body 20 and being rectangle, its length direction is the One end to the direction of the second end, as shown in Figure 10-Figure 14, the first electrode 21 is connected to sense the first end of body 20 (i.e. the left end of rectangle in figure), the second electrode 22 is connected to sense the second end (i.e. right side of rectangle in figure of body 20 End), wherein current flowing direction is the most 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, makes The path in current path portion 25 is longer and width reduces, in R=P*L/h formula, namely add length L simultaneously Reduce width h, thus add the resistance R between the first electrode 21 and the second electrode 22, which thereby enhance sensing The linearity.
In an example of the embodiment of the present invention, prolonging along bearing of trend of current path portion 25 proximity sensing body 20 The side stretched.Alternatively, as is illustrated by figs. 11 and 12, hollow-out parts 24 is generally T-shaped or generally L-shaped.When So the present invention is not limited to this, and hollow-out parts 24 can also be general rectangular, general U-shape, substantially H-shaped or substantially work Other shapes such as font (not shown).Alternatively, the top of current path portion 25 proximity sensing body 20 and edge Left and right directions extends, and current direction is as shown in the direction of arrow in Figure 11 and Figure 12.Certainly, also may be used in current path portion 25 Below and in left-right direction (not shown) is extended with proximity sensing body 20.
In another example of the embodiment of the present invention, current path portion 25 proximity sensing body 20 along bearing of trend The centrage extended.Wherein, multiple hollow-out parts 24 are divided into along bearing of trend linearly aligned first group and second group, and One group of hollow-out parts 24a and second group of hollow-out parts 24b constitute multipair, hollow-out parts 24a in first group of each centering with On the direction be orthogonal to bearing of trend toward each other, current path portion 25 is limited to the to hollow-out parts 24b in second group Between one hollow-out parts 24a and second group of hollow-out parts 24b.
Specifically, the upper end of first group of hollow-out parts 24a is connected with the top edge of sensing body 20, and second group of hollow-out parts The lower end of 24b is connected with the lower limb of sensing body 20, now when control chip 200 is to the first electrode 21 and/or the The sense of current that two electrodes 22 apply level signal and produce is as shown in the arrow in Figure 13 and 14, and electric current is along curvilinear flow Dynamic so that current path portion 25 width in the vertical direction reduces, and i.e. reduces the h in R=P*L/h formula, enters And 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 in second group of hollow-out parts 24b Each of which is substantially inverted T-shaped, and as shown in figure 13, such as, generally T-shaped hollow-out parts 24a includes approximate horizontal First arm and the second arm of general vertical, persons of ordinary skill in the art may appreciate that the first arm also can be with level Direction deviation predetermined angular and the second arm can be with vertical directions deviation predetermined angular (not shown).
Alternatively, each of which in first group of hollow-out parts 24a is generally L-shaped, and in second group of hollow-out parts 24b Each of which is substantially inverted L-shaped, as shown in figure 14.Such as, hollow-out parts 24a of generally L-shaped includes approximate horizontal First arm and the second arm of general vertical, persons of ordinary skill in the art may appreciate that the first arm also can be with level Direction deviation predetermined angular and the second arm can be with vertical directions deviation predetermined angular (not shown).
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 Can also be other shapes with second group of hollow-out parts 24b, as long as can meet in the vertical direction by current path portion 25 Width reduces, and (such as blind end is the U-shaped of flat line or blind end is for such as general rectangular, general U-shape The U-shaped of arc), the most for example, H-shaped or I-shaped, wherein H-shaped or I-shaped hollow-out parts include almost parallel One arm and the second arm and the 3rd arm being connected between the first arm and the second arm, also can for example, other shapes (figure is not Illustrate).
Embodiment three,
In the present embodiment, current path portion 25 is two, one of them current path portion 25 proximity sensing body 20 Along bearing of trend extend a side, another current path portion 25 proximity sensing body 20 along bearing of trend Another side extended.So that the total length in the current path portion 25 i.e. flow path of electric current length increase and Width reduces.Such as when sensing body 20 and being rectangle, as seen in figs. 15-17, one of them current path portion 25 The top of proximity sensing body 20 and extending in left-right direction, and another current path portion 25 proximity sensing body 20 Extend below and in left-right direction.
Alternatively, multiple hollow-out parts 24 are along bearing of trend linear arrangement, and each hollow-out parts 24 is substantially X-shaped, such as figure Shown in 15.Certainly, the present invention is not limited to this.In some examples of the present invention, linearly aligned many along bearing of trend Individual hollow-out parts 24 can also be other shapes, such as general rectangular, general U-shape (not shown), substantially H-shaped (as shown in figure 16) can be or other shapes such as the most I-shaped (as shown in figure 17), maybe each shape above Combination, as long as can meet sensing body 20 on form upper and lower two current path portions.
Touch detection components 100 according to embodiments of the present invention, by arranging the hollow-out parts 24 on sensing body 20, makes The path in current path portion 25 is longer and width reduces, in R=P*L/h formula, namely add length L simultaneously Reduce width h, thus add the resistance R between the first electrode 21 and the second electrode 22, which thereby enhance sensing The linearity.
Touch detection components 100 according to the above embodiment of the present invention, can use parallel rectangle sensing body 20 permissible Reduce the structure complexity of device, such that it is able to reduce manufacturing cost on the basis of ensureing accuracy of detection.
Touch according to the multiple embodiment of the present invention inspection with L-shaped sensing body 20 is described below with reference to Figure 18-Figure 29 Survey assembly 100.
L-shaped sensing body 20 has the first end (such as the upper end of L-shaped in Figure 18-29) and the second end (such as Figure 18-29 The lower end of middle L-shaped), its length direction is from the first end to the second end, the of the first electrode 21 and sensing body 20 One end is connected, and the second electrode 22 is connected with the second end of sensing body 20, and current path portion 25 extends with curve mode Between the first and the second ends so as current path portion 25 bearing of trend (i.e. L-shaped sensing body length direction) Length L in upper current path portion 25 more than sensing body 20 length, current flowing direction in Figure 18-29 such as arrow Shown in head.Touch detection components 100 according to embodiments of the present invention, by arranging the hollow out on L-shaped sensing body 20 Portion 24 so that the path in current path portion 25 is longer, thus add the L in R=P*L/h formula, and then make Resistance R between one electrode 21 and the second electrode 22 becomes big, which thereby enhances the linearity of sensing.
For the sake of clarity, in the following description, the first body 201 with L-shaped sensing body 20 is horizontal-extending And the second body 202 illustrates as a example by vertically extending, say, that the bearing of trend of first body 201 is Left and right directions in Figure 18-29, and the direction orthogonal with bearing of trend is the above-below direction in figure；Second body 202 Bearing of trend be 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, Hollow-out parts 24a in first group and hollow-out parts 24b in second group is alternately arranged in the direction of extension and prolongs being orthogonal to The direction upper part stretching direction is overlapping.
In first example of the embodiment of the present invention, each hollow-out parts 24 is rectangle, as shown in figure 18.Namely Saying, in these examples, first group of hollow-out parts 24a and second group of hollow-out parts 24b are the most multiple spaced apart squares Shape and L-shaped sensing body length direction on be alternately arranged and overlapping in the direction upper part 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 are in the lateral direction It is alternately arranged and partly overlaps in the vertical direction, on the second body 202, first group of hollow-out parts 24a and second Group hollow-out parts 24b is alternately arranged in the vertical direction and partly overlaps in the lateral direction.Certainly, the present invention does not limit In this, in other examples, each hollow-out parts 24 can be also the most I-shaped or substantially H-shaped, not shown.
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.It is to say, as shown in Figure 19, in first group Hollow-out parts 24a of substantially inverted T-shaped be spaced apart from each other on the length direction of L-shaped sensing body, big in second group Hollow-out parts 24b of body T-shaped L-shaped sensing body length direction on be spaced apart from each other and with the hollow-out parts in first group 24a is alternately arranged and overlapping in the direction upper part 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 are alternately arranged and the heaviest in the vertical direction in the lateral direction Folded, now, the upper end of first group of hollow-out parts 24a is connected with the top edge of first body 201, and second group of hollow out The lower end of portion 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 are alternately arranged in the vertical direction and partly overlap in the lateral direction.Now, first Group hollow-out parts 24a right-hand member be connected with the right hand edge of first body 201, and the left end of second group of hollow-out parts 24b and The left hand edge of first body 201 connects.
Thus, when the electricity that control chip 200 applies level signal to the first electrode 21 and/or the second electrode 22 and produces Stream is along curvilinear flow so that the path in current path portion 25 is longer, thus adds the L in R=P*L/h formula, enters And make the resistance R between the first electrode 21 and the second electrode 22 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 fonts, first group of hollow-out parts 24a and second group of hollow-out parts 24b constitutes multipair, generally L-shaped hollow-out parts 24a in every a pair hollow-out parts 24 and substantially 7 font hollow-out parts 24b that This relatively, the most arranged in a crossed manner and partly overlap in the direction of extension.It is to say, as shown in figure 20, 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, second group In substantially 7 font hollow-out parts 24b be spaced apart from each other in the longitudinal direction and intersect with hollow-out parts 24a in first group Arrange to form multipair hollow-out parts relative to each other, and hollow-out parts 24a of often centering with 24b vertical with length direction Direction upper part overlapping.In other words, on first body 201, hollow-out parts 24a of every centering and 24b are on a left side In right direction arranged in a crossed manner and partly overlap in the vertical direction, now, the upper end of first group of hollow-out parts 24a and first The top edge of body 201 connects, and the lower limb of the lower end of second group of hollow-out parts 24b and first body 201 is even Connect.And on the second body 202, hollow-out parts 24a of every centering and 24b is the most arranged in a crossed manner and Left and right directions upper part is overlapping.Now, the right-hand member of first group of hollow-out parts 24a connects with the right hand edge of first body 201 Connect, 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 the electricity that control chip 200 applies level signal to the first electrode 21 and/or the second electrode 22 and produces As shown by the arrow in fig. 20, electric current is along curvilinear flow for flow path direction so that the path in current path portion 25 is longer, from And add the L in R=P*L/h formula, and then the resistance R between the first electrode 21 and the second electrode 22 is become Greatly.
In other examples of the embodiment of the present invention, hollow-out parts 24a in first group is substantially inverted V-shaped, second group In hollow-out parts 24b be substantially V-shaped, each hollow-out parts 24a in first group is in the direction of extension across second group In the adjacent Liang Ge branch of adjacent two hollow-out parts 24b.It is to say, as shown in Figure 21, at the first noumenon In portion 201, hollow-out parts 24a of the substantially inverted V-shaped in first group is spaced apart from each other in left and right, in second group substantially Hollow-out parts 24b of V-arrangement be spaced apart from each other in the lateral direction and be alternately arranged with hollow-out parts 24a in first group so that Hollow-out parts 24a adjacent two hollow-out parts in second group be disposed below in the lateral direction in obtaining first group The Liang Ge branch of 24b.On the second body 202, hollow-out parts 24a of the substantially inverted V-shaped in first group is up and down Be spaced apart from each other, substantially V-shaped hollow-out parts 24b in second group be spaced apart from each other in the vertical direction and with first group In hollow-out parts 24a be alternately arranged so that hollow-out parts 24a in first group is in the vertical direction across being positioned on the left of it Second group in the Liang Ge branch of adjacent two hollow-out parts 24b.
Thus, when the electricity that control chip 200 applies level signal to the first electrode 21 and/or the second electrode 22 and produces Flow path direction is as shown in the arrow in Figure 21, and electric current is along curvilinear flow so that the path in current path portion 25 is longer, from And add the L in R=P*L/h formula, and then the resistance R between the first electrode 21 and the second electrode 22 is become Greatly.
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 Portion 24b constitutes multipair, and the substantially F shape hollow-out parts 24 in every a pair hollow-out parts 24 exists with substantially inverted-F hollow-out parts 24 On bearing of trend arranged in a crossed manner and partly overlap in the direction of extension.It is to say, as shown in figure 22, in first group Hollow-out parts 24a of substantially F shape is spaced apart from each other on the length direction of L-shaped sensing body, substantially falling in second group F shape hollow-out parts 24b L-shaped sensing body length direction on be spaced apart from each other and with hollow-out parts 24a in first group Arranged crosswise to form multipair hollow-out parts relative to each other, and hollow-out parts 24a of every centering and 24b with length direction Vertical direction upper part is overlapping.In other words, on first body 201, hollow-out parts 24a of every centering and 24b The most arranged in a crossed manner and partly overlap in the vertical direction, now, the upper end of first group of hollow-out parts 24a with The top edge of first body 201 connects, and the lower end of second group of hollow-out parts 24b and first body 201 is following Edge connects.And on the second body 202, hollow-out parts 24a and the 24b of every centering are the most arranged in a crossed manner And partly overlap in the lateral direction.Now, the right-hand member of first group of hollow-out parts 24a and the right of first body 201 Edge connects, 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 the electricity that control chip 200 applies level signal to the first electrode 21 and/or the second electrode 22 and produces Flow path direction is as shown in the arrow in Figure 22, and electric current is along curvilinear flow so that the path in current path portion 25 is longer, from And add the L in R=P*L/h formula, and then the resistance R between the first electrode 21 and the second electrode 22 is become Greatly.
Embodiment five,
In the present embodiment, sensing body 20 has the first end and the second end, the first electrode 21 and sensing body 20 First end is connected, and the second electrode 22 is connected with the second end of sensing body 20, and current path portion 25 prolongs with curve mode Stretch between the first and the second ends so that length L in current path portion 25 is big on the bearing of trend in current path portion 25 Length in sensing body 20.Wherein, current path portion 25 extends between the first end and the second end and is being orthogonal to Sectional area in the plane of its bearing of trend is less than sensing body 20 sectional area in the plane, in other words, at first On body 201, current path portion 25 width h in the vertical direction is less than the width of sensing body 20.And On two bodies 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, makes The path in current path portion 25 is longer and width reduces, in R=P*L/h formula, namely add length L simultaneously Reduce width h, thus add the resistance R between the first electrode 21 and the second electrode 22, which thereby enhance sensing The linearity.
In an example of the embodiment of the present invention, prolonging along bearing of trend of current path portion 25 proximity sensing body 20 The side stretched.Alternatively, as shown in figure 23 and figure 24, hollow-out parts 24 is generally T-shaped or L-shaped.The most originally Invention is not limited to this, and hollow-out parts 24 can also be that rectangle, general U-shape, H-shaped or other shapes such as I-shaped (are schemed Not shown).Alternatively, on first body 201, the top of current path portion 25 proximity sensing body 20 and Extend in left-right direction, on the second body 202, the right of current path portion 25 proximity sensing body 20 and edge Above-below direction extends, and current direction is as shown in the direction of arrow in Figure 23 and Figure 24.Certainly, the present invention is not limited to this, In another example, on first body 201, current path portion 25 can also proximity sensing body 20 times Limit and extending 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.
In another example of the embodiment of the present invention, current path portion 25 proximity sensing body 20 along bearing of trend The centrage extended.Wherein, multiple hollow-out parts 24 are divided into along bearing of trend linearly aligned first group and second group, and One group of hollow-out parts 24a and second group of hollow-out parts 24b constitute multipair, hollow-out parts 24a in first group of each centering with On the direction be orthogonal to bearing of trend toward each other, current path portion 25 is limited to the to hollow-out parts 24b in second group Between one hollow-out parts 24a and second group of hollow-out parts 24b.
Specifically, on first body 201, the upper end of first group of hollow-out parts 24a and the top edge sensing body 20 Connect, 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 a left side for second group of hollow-out parts 24b End is connected with the left hand edge of the second body 202, now when control chip 200 is to the first electrode 21 and/or the second electrode 22 apply level signals and the sense of current that produces as shown in the arrow in Figure 25 and 26, electric current, along curvilinear flow, makes Obtain current path portion 25 width in the vertical direction to reduce, i.e. reduce the h in R=P*L/h formula, and then make Resistance R between first electrode 21 and the second electrode 22 becomes big.
Alternatively, each of which in first group of hollow-out parts 24a is generally T-shaped, and in second group of hollow-out parts 24b Each of which is substantially inverted T-shaped, as shown in figure 25.Alternatively, each of which in first group of hollow-out parts 24a is big Each of which in body L-shaped, and second group of hollow-out parts 24b is substantially inverted L-shaped, as shown in figure 26.Certainly, this Bright it 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 (not shown) such as I-shaped, In the vertical direction the width in current path portion 25 is reduced as long as can meet.
Embodiment six,
In the present embodiment, current path portion 25 is two, one of them current path portion 25 proximity sensing body 20 Along bearing of trend extend a side, another current path portion 25 proximity sensing body 20 along bearing of trend Another side extended.Shown in Figure 27-29, on first body 201, one of them current path portion 25 is adjacent The top of nearly first body 201 and extending in left-right direction, and another current path portion 25 is adjacent to first body The left side of 201 and extending in left-right direction.On the second body 202, a current path portion 25 is adjacent to second The right of body 202 and vertically extending, and another current path portion 25 is adjacent to a left side for the second body 202 Limit 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, such as figure Shown in 15.Certainly, the present invention is not limited to this.In some examples of the present invention, linearly aligned many along bearing of trend Individual hollow-out parts 24 can also be other shapes, and such as rectangle, general U-shape (not shown), H-shaped are (such as Figure 16 Shown in) or other shapes such as I-shaped (as shown in figure 17), can be the most such as the combination of each shape above, Want to meet and form two current path portions on sensing body 20.
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, namely in R=P*L/h formula, add length L Reduce width h simultaneously, thus add the resistance R 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 uses L-shaped sensing body 20, can efficiently reduce and make an uproar Sound, improves 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 to have rectangle and L-shaped sensing body 20 touch detection components 100 as a example by carry out Explanation, but, those of ordinary skill in the art after having read technique scheme, be clearly understood that by The program is applied in the technical scheme of sensing body 20 of other shapes such as general U-shape, therefore big to having at this The touch detection components 100 of body U-shaped sensing body 20 is 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, with First body 201, second body 202 of general U-shape sensing body 20 vertically extends and the 3rd body 203 Horizontal-extending and as a example by illustrate, say, that the bearing of trend of first body the 201, second body 202 is Above-below direction in Figure 30-41, and the direction orthogonal with bearing of trend is the left and right directions in figure.3rd body 203 Bearing of trend be the left and right directions in Figure 30-41, and the direction orthogonal with bearing of trend is the above-below direction in figure.
It is wherein that current path portion 25 extends in the sensing body 20 of general U-shape with curve mode shown in Figure 30-34 The first and second ends between so that length L in current path portion 25 is more than on the bearing of trend in current path portion 25 The length of sensing body 20.Thereby increase the L in R=P*L/h formula, and then make the first electrode 21 and second Resistance R between electrode 22 becomes big, which thereby enhances the linearity of sensing.
Figure 35-38 is illustrated that current path portion 25 extends between the first and the second ends so that at electric current with curve mode On the bearing of trend of passage portion 25, length L in current path portion 25 is more than the length of sensing body 20, and 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 originally Body 20 sectional area in the plane so that the path in current path portion 25 is longer and width reduces.Thus at R=P*L/h Formula 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 enhance the linearity of sensing.
Figure 39-Figure 41 is illustrated that current path portion 25 is two, and one of them current path portion 25 proximity sensing is originally The side extended along bearing of trend of body 20, the edge of another current path portion 25 proximity sensing body 20 extends Another side that direction extends.So that the path in current path portion 25 is longer and width reduces, namely exist R=P*L/h formula adds length L and reduces width h simultaneously, thus add the first electrode 21 and the second electrode Resistance R between 22, which thereby enhances the linearity of sensing.
Touch detection components 100 in the embodiment of the present invention uses general U-shape sensing body 20, is not only simple in structure, Being easy 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, multiple L-shaped sensing unit or substantially can be included in touching detection components 100 U-shaped sensing unit 2, i.e. includes multiple L-shaped sensing body or general U-shape sensing door body, such as Figure 42 and Figure 43 institute Showing, the length of each sensing door body is different, mutually nested between multiple sensing door body.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 essence Reach bigger coverage rate while degree, and reduce the complexity of computing, improve the response speed touching detection components. Certainly those skilled in the art also can use other mutually nested modes to arrange sensing according to the thought of Figure 42 with Figure 43 Body.
Alternatively, the spacing between adjacent two sensing units 2 is equal, thus can pass through multiple sensing units 2 To touching being evenly dividing of both sides of detection components, thus improve arithmetic speed, improve and calculate speed, as shown in figure 42.
The most in another embodiment of the present invention, the spacing between adjacent two sensing units 2 can not also wait, As shown in figure 43, such as, often touch due to user in the centre touching detection components 100, therefore can will touch Touch the spacing between the sensing unit 2 in detection components 100 centre to reduce, thus improve the detection essence in centre Degree.
It should be noted that above-mentioned L-shaped sensing body or general U-shape sensing door body are the present invention preferably embodiment, It is obtained in that bigger coverage rate, but other embodiments of the present invention can carry out some equivalents to Figure 42 and Figure 43 Change, such as general U-shape sensing door body in first body 201 and the second body 202 can be not parallel 's.
Sensing unit 2 in the touch detection components 100 of the embodiment of the present invention uses double-end monitor, i.e. sensing unit 2 Two ends be respectively provided with electrode, and each electrode is all connected with the corresponding pin of control chip 200, touches detection carrying out Time can realize the location to touch point by sensing unit 2 self.
Advantageously, embodiments of the invention realize touching by calculating ratio between the first resistance R1 and the second resistance R2 The determination of position, therefore for current rhombus or triangular design, due to when determining touch location, nothing The size of self-capacitance need to be calculated, and the size of self-capacitance does not interferes with the precision of touch location, to self-capacitance accuracy of detection Dependence reduce, thus improve certainty of measurement, improve the linearity.Additionally, due to the first of the embodiment of the present invention To the 3rd body, any one can be all the rectangle of regular shape, therefore relative to current rhombus or triangle etc. For irregular shape, it is also possible to improve the linearity further.
It will be understood by those skilled in the art that for sensing unit 2, as long as the length of sensing body 20 meets touch Touch detection components requirement, and different from the control chip 200 respectively pin of two end electrodes is connected with can be single to sensing Unit charges and discharges, it can be seen that the present invention is not limiting as the concrete structure of sensing unit.Sensing is single Can there be various structures in unit, and sensing unit can be become on the basis of the above-mentioned thought of the present invention by those skilled in the art Change or improve, but as long as without departing from these structures of above-mentioned thought of the present invention just should be included in the scope of the present invention it In.
Figure 44 be the embodiment of the present invention touch detection components 100 in signal when being touched of the general U-shape sensing unit Figure.As can be seen from Figure 44, the first electrode is 21, and the second electrode is 22, and touch location is close to the second electrode 22, false If a length of 10 unit lengths of sensing unit 2, and sensing unit 2 is evenly divided into 10 parts, wherein, sense Answer a length of 4 unit lengths of the 3rd body 203 of unit 2, first body 201 and the second body 202 A length of 3 unit lengths.Through detection, know that the ratio of the first resistance and the second resistance is 4:1, the i.e. first electrode The length (being embodied by the first resistance R1) of 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 at distance the first electrode 21, knows, touch point is positioned at distance the second electrode The position of 2 unit lengths at 22.When finger moves, touch location can move accordingly, therefore passes through touch location Conversion just can determine whether the corresponding motion track of finger, thus judge 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 very Simply, 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.From Figure 45 understands, and the first electrode is 21, and the second electrode is 22, and touch location is close to the second electrode 22, it is assumed that sensing A length of 10 unit lengths of body 20, and sensing body is evenly divided into 10 parts, wherein, first body A length of 5 unit lengths of 201, a length of 5 unit lengths of the second body 202.Through detection, know The ratio of the first resistance R1 and the second resistance R2 is 9:1, and the length of the i.e. first electrode 21 to touch location is (by the first electricity Resistance R1 embodies) it is the 90% of whole sensing unit length.In other words, touch point is positioned at distance the first electrode 21 The position of 9 unit lengths, knows, touch point is positioned at the position of 1 unit length at distance the second electrode 22.
As can be seen from Figure 45, the calculation of touch detection components according to embodiments of the present invention is very simple, because of This can 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 to sensing unit 2 two ends Applying level signal, if this sensing unit 2 is touched, then this sensing unit 2 can form self-capacitance, therefore passes through This self-capacitance can be charged by the level signal applied, and according to the ratio between the first resistance R1 and the second resistance R2 Example relation determines touch location in a first direction.The most in one embodiment of the invention, the first resistance and Proportionate relationship between two resistance is according to when to described self-capacitance charge/discharge, from described first electrode and/or the second electricity The proportionate relationship that pole is carried out between the first detected value and the second detected value that detection obtains is calculated.Therefore from the first electricity The first detected value produced when pole and/or this self-capacitance charge/discharge of the second electrode detection and the second detected value.So, logical Cross the first detected value and the second detected value just can react touch point and be positioned at the position of this sensing unit, thus the most true Determine touch point in the position touching detection components.
Portable electric appts according to embodiments of the present invention can include the touch detection group described with reference to above-described embodiment Part 100.Portable electric appts according to embodiments of the present invention can include with reference to above-described embodiment describe touch-control dress Put.Other of portable electric appts according to embodiments of the present invention constitute such as frame structure and control composition etc. and operation It is the most all known, is not detailed herein.
In the description of this specification, reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be in office What one or more embodiments or example combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: do not taking off In the case of the principles and objective of the present invention, these embodiments can be carried out multiple change, revise, replace and modification, The scope of the present invention is limited by claim and equivalent thereof.

Claims (21)

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 sense Answering unit to include sensing body and the first electrode and the second electrode, described sensing body includes each other in predetermined angular First body and the second body, the second end of described first body is connected with the first end of described second body, Described first electrode is connected with the first end of described first body and the of described second electrode and described second body Two ends are connected, and described sensing body has multiple hollow-out parts, and the plurality of hollow-out parts arranges with pre-defined rule with described The current path portion for increasing the resistance between described first and second electrodes is limited on sensing body.
Touch detection components the most as claimed in claim 1, it is characterised in that described current path portion extends in described Between first end and second end of described second body of first body and in the plane being orthogonal to its bearing of trend Sectional area less than described sensing body sectional area on the plane.
Touch detection components the most as claimed in claim 2, it is characterised in that described current path portion is adjacent to described sense Answer the side extended along described bearing of trend of body.
Touch detection components the most as claimed in claim 3, it is characterised in that described hollow-out parts be rectangle, T-shaped, U-shaped, H-shaped, L-shaped or I-shaped.
Touch detection components the most as claimed in claim 2, it is characterised in that described current path portion is adjacent to described sense Answer the centrage extended along described bearing of trend of body.
Touch detection components the most as claimed in claim 5, it is characterised in that the plurality of openwork part is along described Linearly aligned first group and second group of bearing of trend, described first group of hollow-out parts constitutes many with described second group of hollow-out parts Right, hollow-out parts in first group of each centering and the hollow-out parts in second group are in the direction being orthogonal to described bearing of trend Upper relative to each other, described current path portion is limited between described first and second groups of hollow-out parts.
Touch detection components the most as claimed in claim 6, it is characterised in that each in described first group of hollow-out parts Each of which in the individual T-shaped that is, and described second group of hollow-out parts is inverted T-shaped.
Touch detection components the most as claimed in claim 6, it is characterised in that each in described first group of hollow-out parts Each of which in the individual L-shaped that is, and described second group of hollow-out parts is inverted L-shaped.
Touch detection components the most as claimed in claim 2, it is characterised in that described current path portion is two, its In current path portion adjacent to the side extended along described bearing of trend of described sensing body, another electric current Passage portion is adjacent to another side extended along described bearing of trend of described sensing body.
Touch detection components the most as claimed in claim 9, it is characterised in that the plurality of hollow-out parts is prolonged described in edge Stretching dimension linear arrangement, each described hollow-out parts is X-shaped, H-shaped or I-shaped.
11. touch detection components as claimed in claim 1, it is characterised in that described current path portion is with curve side Formula extends between the first end of described first body and the second end of described second body to lead at described electric current On the bearing of trend in road portion, the length in described current path portion is more than the length of described sensing body.
12. touch detection components as claimed in claim 1, it is characterised in that described hollow-out parts is along described sensing originally The thickness direction of body is through.
13. touch detection components as claimed in claim 1, it is characterised in that described substrate is rectangle.
14. touch detection components as claimed in claim 1, it is characterised in that described first body and second Body is rectangle.
15. touch detection components as claimed in claim 1, it is characterised in that described first and second bodies that This is orthogonal.
16. touch detection components as claimed in claim 1, it is characterised in that described hollow-out parts is evenly spaced apart Arrangement.
17. 1 kinds of contactor control devices, it is characterised in that including:
Touching detection components, described touch detection components is the touch detection group as according to any one of claim 1-16 Part；With
Control chip, described control chip is connected with described first electrode and the second electrode, and described control chip is configured to Logical to produce between described first and second electrodes for applying level signal to described first electrode and/or the second electrode Cross the electric current of described current path portion flowing, for produced when being touched to described sensing body by described electric current Self-capacitance charges, and is used for when the sensing body at least one described sensing unit being detected is touched, described in calculating extremely The first resistance between described first electrode and the described self-capacitance of a few sensing unit is single with at least one sensing described The proportionate relationship between the second resistance between described second electrode and the described self-capacitance of unit, and for according to described the Proportionate relationship between one resistance and described second resistance determines the sensing body quilt of at least one described sensing unit described The touch location touched.
18. contactor control devices as claimed in claim 17, it is characterised in that described first resistance and described second resistance Between proportionate relationship according to when to described self-capacitance charge/discharge, from described first electrode and/or the second electrode detection Proportionate relationship between the first detected value and the second detected value that obtain is calculated.
19. contactor control devices as claimed in claim 17, it is characterised in that described control chip includes one or two Capacitive detection module.
20. 1 kinds of portable electric appts, it is characterised in that include the touch as described in any one of claim 1-16 Detection components.
21. 1 kinds of portable electric appts, it is characterised in that include touching as described in any one of claim 17-19 Control device.
CN201210094078.5A 2011-07-26 2012-04-01 Touch detection components, a kind of contactor control device and portable electric appts Expired - Fee Related CN102902444B (en)

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CN2011205736916U Expired - Lifetime CN202548806U (en) 2011-07-26 2011-12-31 Touch control apparatus and portable electronic equipment
CN201110459449.0A Active CN102902436B (en) 2011-07-26 2011-12-31 Touch-screen testing equipment and contactor control device
CN2011205732173U Expired - Lifetime CN202548804U (en) 2011-07-26 2011-12-31 Touch device and portable electronic device
CN201110459482.3A Active CN102902439B (en) 2011-07-26 2011-12-31 Touch detecting method and contactor control device
CN2011205734658U Expired - Lifetime CN202548805U (en) 2011-07-26 2011-12-31 Touch screen detection equipment, touch device and portable electronic equipment
CN2011205737694U Expired - Lifetime CN202548807U (en) 2011-07-26 2011-12-31 Touch control device and portable electronic equipment
CN201110459292.1A Active CN102902428B (en) 2011-07-26 2011-12-31 Touch detecting method and contactor control device
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CN2012201340971U Expired - Lifetime CN202795314U (en) 2011-07-26 2012-04-01 Touch control device and touch detecting assembly thereof and portable electronic 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
CN2012201341090U Expired - Lifetime CN202870787U (en) 2011-07-26 2012-04-01 Touch detection component, touch control device and portable electronic equipment
CN201210094078.5A Expired - Fee Related CN102902444B (en) 2011-07-26 2012-04-01 Touch detection components, a kind of contactor control device and 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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CN2011205738057U Expired - Lifetime CN202795313U (en) 2011-07-26 2011-12-31 Touch control device and portable electronic device
CN2011205734304U Expired - Lifetime CN202795311U (en) 2011-07-26 2011-12-31 Touch control device and portable electronic device
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CN2011205737694U Expired - Lifetime CN202548807U (en) 2011-07-26 2011-12-31 Touch control device and portable electronic 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
CN201210093646.XA Expired - Fee Related CN102902398B (en) 2011-07-26 2012-04-01 Portable electric appts, touch detection components and contactor control device
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
CN2012201340971U Expired - Lifetime CN202795314U (en) 2011-07-26 2012-04-01 Touch control device and touch detecting assembly thereof and portable electronic device
CN2012201345443U Expired - Lifetime CN202615359U (en) 2011-07-26 2012-04-01 Touch detection module and touch control device and portable electronic equipment
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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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160817