CN102902431B - Touch detecting method and contactor control device - Google Patents
Touch detecting method and contactor control device Download PDFInfo
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- CN102902431B CN102902431B CN201110459313.XA CN201110459313A CN102902431B CN 102902431 B CN102902431 B CN 102902431B CN 201110459313 A CN201110459313 A CN 201110459313A CN 102902431 B CN102902431 B CN 102902431B
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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
Abstract
The present invention proposes a kind of touch detecting method and device.The method includes: applies high level signal to the first electrode of sensing unit, and carries out charging for the first time with the self-capacitance produced sensing unit when sensing unit is touched by the second electrode ground connection；To sensing unit second electrode apply high level signal, and by the first electrode ground connection with self-capacitance is carried out second time charge；Obtain the first detection changing value between charging for the first time and second time charging, and carry out self-capacitance discharging for the first time；Apply high level signal and charge self-capacitance to be carried out third time；By the first electrode and the equal ground connection of the second electrode of a sensing unit, to carry out self-capacitance discharging for the second time；Obtain the second detection changing value between third time charging and the electric discharge of described second time；Calculate described self-capacitance to the first resistance between the first electrode and self-capacitance to the second electrode between the proportionate relationship of the second resistance, and determine touch location.
Description
Technical field
The present invention relates to electronic device design and manufacturing technology field, particularly to a kind of touch detecting method and touch-control dress
Put.
Background technology
The range of application of touch screen is from minority's business markets such as conventional ATM (automatic teller machine), industrial computers at present,
It is rapidly spread to mobile phone, PDA (personal digital assistant), GPS (global positioning system), PMP (MP3, MP4
Deng), the even mass consumption electronic applications such as panel computer.Have for touch screen that touch control operation is simple, convenient, people
The advantage of property, therefore touch screen is expected to become the optimal interface of human-computer interaction and obtain in a portable device rapidly
Extensively application.
Capacitance touch screen is typically divided into self-capacitance and mutual capacitance two class.As it is shown in figure 1, be common in the art
A kind of structure chart of self-capacitance touch screen.This self-capacitance touch screen mainly have bilayer diamond structure sensing unit 100 ' and
200 ', its Cleaning Principle is to scan X-axis and Y-axis respectively, if be detected that the capacitance variations in certain cross point exceeds
Preset range, then by the cross point of this row and column as touch coordinate.Although the linearity of this self-capacitance touch screen is relatively
Good, 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 knot
Structure and cost are significantly increased, and diamond structure there will be coordinate drift in the case of capacitance change is the least, by outward
Boundary's interference effect is big.
As shown in Figure 2 a, for the structure chart of another kind of self-capacitance touch screen common in the art.This self-capacitance touches
Screen uses triangular pattern screen structure.This self-capacitance touch screen 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 '.Such as Fig. 2 b
Shown in, for the Cleaning Principle of triangle self-capacitance touch screen.As it can be seen, ellipse representation finger, S1, S2 represent hands
Refer to the contact area with 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 current 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 touch screen structure
The simplest, but do not have the capacitive sensing for screen and be optimized, capacitance change is little, thus causes signal to noise 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, this capacitive sensing unit output capacitance variable quantity is the least, reach flying method level, depositing of its cable stray capacitance
, measuring circuit is had higher requirement.And, stray capacitance can be with temperature, position, inner electric field and outer electric field distribution
Changing Deng factors impact, measured capacitance signal is even flooded in interference.Additionally, for monolayer electric capacity, by
Impact in Vcom level signal can form serious interference to inductance capacitance, wherein, Vcom level signal be in order to
Prevent lcd screen liquid crystal aging from not stopping the level signal of upset.
Summary of the invention
The purpose of the present invention is intended at least solve one of above-mentioned technological deficiency, particularly solves or avoid the occurrence of existing from electricity
Hold the disadvantages mentioned above in touch screen.
Embodiment of the present invention first aspect proposes the touch detecting method of a kind of touch screen, and touch screen includes multiple not phase
Hand over sensing unit, the two ends of each sensing unit are respectively provided with the first electrode and the second electrode, described method include with
Lower step: the first electrode of a sensing unit applies high level signal in the plurality of sensing unit, and by described
Second electrode ground connection is carried out with the self-capacitance produced one sensing unit when one sensing unit is touched
Charging for the first time；In the plurality of sensing unit, described second electrode of a sensing unit applies high level signal,
And described first electrode ground connection is charged so that described self-capacitance to carry out second time；From corresponding described first electrode or the
Two electrodes carry out the first detection changing value detecting to obtain between the charging of described first time and the charging of described second time, and
Carry out described self-capacitance discharging for the first time；First electrode of a sensing unit in the plurality of sensing unit and
An applying high level signal in second electrode, and another in described first electrode and the second electrode is disconnected,
To carry out described self-capacitance charging for the third time；By the first electrode and the equal ground connection of the second electrode of one sensing unit
To carry out described self-capacitance discharging for the second time；Carry out detecting to obtain from corresponding described first electrode or the second electrode
The second detection changing value between the charging of described third time and the electric discharge of described second time；According to described first detection changing value
And second detection changing value calculate described self-capacitance to the first resistance between described first electrode and described self-capacitance to institute
State the proportionate relationship of the second resistance between the second electrode；And according between described first resistance and described second resistance
Proportionate relationship determine touch location.
It is noted that by the process of the charging of above-mentioned first time and electric discharge for the first time and second time charging and second time electric discharge
The order intermodulation of process, equally realize the present invention, as long as causing the change in electrical charge of self-capacitance.The present invention
Change in electrical charge according to self-capacitance can obtain corresponding first resistance and the proportionate relationship of the second resistance.
Embodiment of the present invention second aspect also proposed a kind of contactor control device, including: substrate；Multiple disjoint sensings
Unit, the plurality of sensing unit is formed on described substrate, and the two ends of each sensing unit are respectively provided with respectively
One electrode and the second electrode；Touch screen control chip, described touch screen control chip include charging module, discharge module,
Detection module and control and computing module, wherein: described charging module, in first time charging process, to institute
The first electrode stating a sensing unit in multiple sensing unit applies high level signal, and by described second electrode ground connection
Carry out charging for the first time with self-capacitance one sensing unit produced when one sensing unit is touched；
In second time charging process, in the plurality of sensing unit, described second electrode of a sensing unit applies high electricity
Ordinary mail number, and described first electrode ground connection is charged so that described self-capacitance to carry out second time；In third time charging process
In, the high electricity of an applying in the first electrode of a sensing unit in the plurality of sensing unit and the second electrode
Ordinary mail number, and another in the first electrode and the second electrode is disconnected, to carry out described self-capacitance charging for the third time；
Described discharge module, after at described charging module to the charging for the first time of described self-capacitance and second time charging, right
Described self-capacitance carries out discharging for the first time；And after described charging module is to the third time charging of described self-capacitance, by institute
State the first electrode and the equal ground connection of the second electrode of a sensing unit, to carry out described self-capacitance discharging for the second time,
With described detection module, it is used for carrying out detecting to obtain described first time from corresponding described first electrode or the second electrode
The first detection changing value between charging and the charging of described second time, and from corresponding described first electrode or the second electrode
Carry out the second detection changing value detecting to obtain between the charging of described third time and described secondary discharge；And control and
Computing module, for described charging module, discharge module, first detection module and the second detection module are controlled,
And described control and computing module calculate described self-capacitance extremely according to described first detection changing value and the second detection changing value
The ratio between the second resistance between the first resistance and described self-capacitance extremely described second electrode between described first electrode
Example relation, and determine touch location according to the proportionate relationship between described first resistance and described second resistance.
The embodiment of the present invention third aspect also proposed a kind of portable electric appts, including contactor control device as above.
Sensing unit in the Touch-screen testing equipment of the embodiment of the present invention uses the two ends of double-end monitor, i.e. sensing unit
It is respectively provided with electrode, and each electrode is all connected with the corresponding pin of touch screen control chip, logical when carrying out touching detection
Cross sensing unit self and can realize the location to touch point.
What is more important, the present invention realizes touch location really by calculating ratio between the first resistance and the second resistance
Fixed, therefore for current rhombus or triangular design, due to when determining touch location, it is not necessary to calculate certainly
The size of electric capacity, and the size of self-capacitance do not interferes with the precision of touch location, thus improve certainty of measurement, improve
The linearity.
The embodiment of the present invention is by applying level signal to the electrode at sensing unit two ends, if this sensing unit is touched,
Touching object (such as finger) then can form self-capacitance with this sensing unit, and therefore the present invention is believed by the level applied
Number this self-capacitance can be charged, and determine on touch screen according to the proportionate relationship between the first resistance and the second resistance
Touch location.And by the detection mode that self-capacitance is carried out twice charging of the embodiment of the present invention, to offset some
Immeasurablel physical parameter or the measurement of minimizing physical quantity, thus on the premise of ensureing detection speed, effectively
Improve accuracy of detection.
The embodiment of the present invention proposes the self-capacitance detection mode of a kind of novelty, when sensing unit is touched, touch point
This sensing unit just can be divided into two resistance, thus while carrying out self-capacitance detection, consider that the two resistance just may be used
To determine position on this sensing unit, the touch point.The simple in construction of the embodiment of the present invention, and for a sensing
For unit, detect when charge or discharge, can not only reduce RC constant, time-consuming raising efficiency, and
And can also ensure that coordinate will not offset.Additionally, the embodiment of the present invention can also be effectively improved the to-noise ratio of circuit, fall
Low circuit noise, improves the sensing linearity.It addition, owing to the sensing unit being touched is filled during detection
Electricity, wherein can produce small area analysis, it is possible to eliminates Vcom level signal well and produces sensing unit in touch screen
The impact of raw self-capacitance, therefore can correspondingly eliminate screenmask layer and concerned process steps, such that it is able to enhancing
Cost is reduced further while capacity of resisting disturbance.
Aspect and advantage that the present invention adds will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or that add aspect and advantage will become bright from the following description of the accompanying drawings of embodiments
Aobvious and easy to understand, wherein:
Fig. 1 is the structure chart of a kind of self-capacitance touch screen common in the art；
Fig. 2 a is the structure chart of another kind of self-capacitance touch screen common in the art；
Fig. 2 b is the Cleaning Principle figure of another kind of self-capacitance touch screen common in the art；
Fig. 3 is the Cleaning Principle schematic diagram of embodiment of the present invention contactor control device；
Fig. 4 is the touch detecting method flow chart of the embodiment of the present invention；
Fig. 5 is the schematic diagram that the rectangle sensing unit of the embodiment of the present invention is touched；
Fig. 6 a is the sensing unit structure chart of one embodiment of the invention；
Fig. 6 b is the sensing unit structure chart of one embodiment of the invention；
Fig. 7 a is another embodiment of the present invention Touch-screen testing equipment structure chart；
Fig. 7 b is another embodiment of the present invention touch screen detection device structure chart；
Fig. 8 is the sensing unit of embodiment of the present invention schematic diagram when being touched；
Fig. 9 a is further embodiment Touch-screen testing equipment structure chart of the present invention；
Fig. 9 b is further embodiment touch screen detection device structure chart of the present invention；
Figure 10 is the sensing unit of embodiment of the present invention schematic diagram when being touched；
Figure 11 is the contactor control device schematic diagram of one embodiment of the invention；
Figure 12 is the structure chart of embodiment of the present invention touch screen control chip.
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
Same or similar label represents same or similar element or has the element of same or like function.Below by ginseng
The embodiment examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
The embodiment of the present invention proposes the self-capacitance detection mode of a kind of novelty, when sensing unit is touched, touch point
This sensing unit can be divided into two resistance, while carrying out self-capacitance detection, consider that the two resistance just can be true
Determine position on this sensing unit, the touch point.As it is shown on figure 3, be the Cleaning Principle of embodiment of the present invention contactor control device
Schematic diagram.When finger touches this sensing unit, will be equivalent to this sensing unit is divided into two resistance, the two
The resistance of resistance is relevant to the position of touch point.Such as, as described in Figure, time nearer with the first electrode when touch point, then
Resistance R1 is the least, and resistance R2 is the biggest；Otherwise, time nearer with the second electrode when touch point, then resistance R1
The biggest, and resistance R2 is the least.Therefore, the present invention is by being assured that tactile to the detection of resistance R1 and R2
Touch the position a little on this sensing unit.In an embodiment of the present invention, detection resistance R1 and R2 in several ways,
Such as can be by detecting the first electrode and the current detection value of the second electrode, self-capacitance detected value, level signal detected value
With one or more in change in electrical charge amount, thus according to these detected values obtain resistance R1 and R2.And the present invention
By the self-capacitance formed by touch point being carried out twice charging to offset some immeasurablel physical parameter or minimizing
The measurement of physical quantity, improves certainty of measurement.
It should be noted that in an embodiment of the present invention, the function of above-mentioned first electrode and the second electrode is identical, and
The two can exchange, the most in the above-described embodiments, both can from the first electrode detection can also from the second electrode detection,
Electric current is needed through the first resistance and this requirement of the second resistance when charging, discharging or detect as long as can meet.
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.
As shown in Figure 4, for the touch detecting method flow chart of the embodiment of the present invention, this flow chart combines shown in Fig. 3
Schematic diagram together illustrates.The method comprises the following steps:
Step S401, in multiple sensing units, the first electrode of a sensing unit applies high level signal, and by the
Two electrode ground connection carry out charging for the first time with the self-capacitance produced sensing unit when sensing unit is touched.Real at this
Execute in example, apply high level signal Vcc to the first electrode.
If now this 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), therefore self-capacitance just can be charged by the high level signal Vcc by applying, and is now applied to from electricity
Voltage in appearance is V2=VccR2/ (R1+R2).Additionally, in an embodiment of the present invention, by the charging to self-capacitance,
The accuracy of detection of self-capacitance can also be improved.
In one embodiment of the invention, if this sensing unit is not touched, follow-up will be unable to detects certainly
The existence of electric capacity, therefore can determine whether that it is not touched.
Step S402, in multiple sensing units, the second electrode of a sensing unit applies high level signal, and by the
One electrode ground connection is charged so that self-capacitance to carry out second time.In this embodiment, high level signal is applied to the first electrode
Vcc.If now this sensing unit is touched by finger or other objects, then this sensing unit will be produced from electric capacity C1
(with reference to Fig. 3), therefore self-capacitance just can be charged by the high level signal Vcc by applying, and is now applied to
Voltage on self-capacitance is V1=VccR1/ (R1+R2).Additionally, in an embodiment of the present invention, by self-capacitance
Charging, it is also possible to improve the accuracy of detection of self-capacitance.
Step S403, from corresponding described first electrode or the second electrode carry out detecting obtaining the charging of described first time and
The first detection changing value between the charging of described second time, and carry out described self-capacitance discharging for the first time.In the present invention
Embodiment in, all can be charged detection from the first electrode and the second electrode, for the first time charging detection detected value and the
Recharging detection detected value is exactly the first detection changing value between the charging of described first time and the charging of described second time.
In this embodiment, for the first time electric discharge can be adopted in any way, such as, specifically, can by the first electrode and
The second equal ground connection of electrode；Or, by the first electrode ground connection, and the second electrode disconnects；Or, by the second electrode ground connection,
And the first electrode disconnects, to carry out self-capacitance discharging for the first time.
In this example, it is assumed that the first detection changing value is Δ Q1.Become with the first detection changing value and the second detection below
Change value is to be described as a example by change in electrical charge amount, but other detections of relation can become between reaction resistance R1 and R2
Change value, such as level signal, electric current etc. the most all can use.
Wherein, Δ Q1=(V2-V1) C1=VccC1 (R2-R1)/(R1+R2) (1)
Wherein, V2=VccR2/ (R1+R2), now during charging for the first time, the voltage of self-capacitance is V2,
V1=VccR1/ (R1+R2), during now second time charging, the voltage of self-capacitance is V1.
Step S404, executes for one in the first electrode of a sensing unit in multiple sensing units and the second electrode
Add high level signal, and another in the first electrode and the second electrode is disconnected, so that described self-capacitance is carried out the 3rd
Secondary charging.
In embodiments of the present invention, high level signal can be applied to the first electrode, and the second electrode disconnects；Or, will
Second electrode applies high level signal, and the first electrode disconnects.Additionally it is noted that the high level owing to applying is believed
Number it is known quantity, therefore the high level signal applied for twice can be identical or differ, and does not the most affect pushing away of the present invention
Lead process.In this embodiment, the high level signal identical with step S401 is applied to the first electrode or the second electrode
Vcc.Now being applied to the voltage on self-capacitance is Vcc.
Step S405, by the first electrode of one sensing unit and the equal ground connection of the second electrode to enter described self-capacitance
Row second time electric discharge.
Step S406, carries out detecting to obtain third time charging from the first corresponding electrode or the second electrode and second time is put
The second detection changing value between electricity.In this example, it is assumed that the second detection changing value is Δ Q2.Second detection change
Value need to use the detection changing value identical with the first detection changing value in step S403, the most equal
For change in electrical charge amount.Similarly, said " corresponding " be also relative concept, such as when second time electric discharge, as
Really the second electrode disconnects, then can only detect from the first electrode.
Wherein, Δ Q2=VccC1=(V1+V2) C1 (2)
Step S407, according between the first detection changing value and the second detection changing value calculating self-capacitance to the first electrode
First resistance and self-capacitance are to the proportionate relationship of the second resistance between the second electrode, and according to the first resistance and the second electricity
The proportionate relationship of resistance determines touch location.In one embodiment of the invention, represented by formula (1) and (2)
Self-capacitance change in electrical charge amount can calculate the proportionate relationship of R1 Yu R2, due to the regular linear relation of figure, then
The position of the abscissa at place, touch point, and the position at self-capacitance C1 place can be calculated.At embodiments of the invention
In, if sensing unit is door shape sensing unit or L-shaped sensing unit, then by between the first resistance and the second resistance
Ratio just can determine that touch location on the touchscreen, be described in detail below with reference to specific example.But at this
In other bright embodiments, if sensing unit is rectangle sensing unit or snakelike (but see on the whole and be equivalent to rectangle)
Sensing unit, then step S407 can only calculate the touch location on touch screen first direction, and this first direction is permissible
It it is the length direction (horizontal direction of such as touch screen) of sensing unit.
If sensing unit is rectangle sensing unit or snakelike (but see on the whole and be equivalent to rectangle) sensing unit, then also
Need to determine touch location in a second direction according to the position of sensing unit.In one embodiment of the invention,
First direction is the length direction of sensing unit, and second direction is to be perpendicular to the direction of sensing unit, sensing unit level
Arrange or be vertically arranged.
In an embodiment of the present invention, R1/R2=(Δ Q2-Δ Q1)/(Δ Q1+ Δ Q2), is therefore implemented by the present invention
Example is achieved with the proportionate relationship between R1 and R2.
It is noted that the charging of above-mentioned first time and second time charging process (step S401-step S403) and third time are filled
The order of electricity and second time discharge process (step S404-step S406) can the most first carry out step S404-step with intermodulation
S406, then carry out step S401-step S403, too without departing from the thought of the present invention, it is included in the guarantor of the present invention
Within the scope of protecting.
In an embodiment of the present invention, self-capacitance detection module can be the capacitive detection module being currently known, therefore at this
Repeat no more.
In one embodiment of the invention, if using two self-capacitance detection modules, then owing to two from electricity
Hold detection module and can share multiple device, thus without the overall power increasing chip.
In one embodiment of the invention, sensing unit can take different shapes.Preferably, multiple disjoint
Sensing unit is positioned at same layer, thus in the case of ensureing accuracy of detection, it is possible to the most cost-effective.
As it is shown in figure 5, the schematic diagram being touched for the rectangle sensing unit of the embodiment of the present invention.This sensing unit is square
Shape, and the first direction of multiple sensing unit and described touch screen is parallel to each other, therefore touch location is in a first direction
On touch location.
As shown in Figure 6 a, for the sensing unit structure chart of one embodiment of the invention.This sensing unit 200 includes multiple
Part I 230 and multiple parallel Part II 240, wherein, pass through Part II between adjacent Part I 230
240 are connected, to form multiple the first alternately arranged groove 1000 and the second groove 2000, wherein, multiple first recessed
The opening direction of groove 1000 and multiple second groove 2000 is contrary.Preferably, Part II 240 is arranged in the first direction
Row.In one embodiment of the invention, multiple Part I 230 can be parallel to each other, it is also possible to not parallel.And,
Preferably, Part II 240 is rectangle.In other embodiments of the invention, Part I 230 is alternatively rectangle,
But Part I 230 can be also other various shape.In this embodiment, resistance is increased by Part I 230
Impedance, thus increase the impedance of sensing unit 200 so that the first resistance and the second resistance are more easy to detection, further
Improve accuracy of detection.And in such an embodiment, it is preferable the interval between Part II 240 is equal such that it is able to
Improve equably from the impedance of sensing unit, to improve accuracy of detection.In one embodiment of the invention,
One direction is the length direction of sensing unit 200, and second direction is to be perpendicular to the direction of sensing unit 200, specifically,
Sensing unit 200 can be horizontally disposed with or be vertically arranged.
In an embodiment of the present invention, the size of sensing unit 200 length direction is basically identical with the size of substrate, because of
This touch control device structure is simple, easily manufactures, and low cost of manufacture.
In one embodiment of the invention, the first electrode 210 and the second electrode 220 respectively with multiple Part I 230
In two Part I be connected.But in another embodiment of the present invention, the first electrode 210 and the second electrode
220 are connected, as shown in Figure 6 b with two Part II in multiple Part II 240 respectively.
Further, in an embodiment of the present invention, it is mutually perpendicular between Part II 240 and Part I 230, the two
Between angle be preferably 90 degree, the most also may select other angles.As shown in Figure 6 a, this sensing unit 200 leads to
Cross multiple Part II 240 to be joined end to end by multiple Part I 230, the first electrode 210 He of sensing unit 200
Second electrode 220 is connected with the Part I 230 at two ends respectively.From overall structure, this sensing unit 200 is
There is the rectangle of high length to width aspect ratio.Although being somebody's turn to do it should be noted that sensing unit 200 is arranged along X-axis in Fig. 6 a,
It should be understood by those skilled in the art that this sensing unit 200 also can be arranged along Y-axis.By this sensing list
The structure of unit can efficiently reduce noise, improves the linearity of sensing.
As shown in Figure 7a, for the sensing unit structure chart of another embodiment of the present invention.In this embodiment, this sensing
Unit 200 can be that the length of each sensing unit 200 in door shape, and multiple sensing unit 200 is different, multiple sensings
Between unit 200 mutually nested.Wherein, each described sensing unit include Part III 250, disjoint 4th
Points 260 and Part V 270.Preferably, Part III 250 is parallel with the first limit 110 of substrate 100, the 4th
Points 260 parallel with the second limit 120 of substrate 100 with Part V 270, and Part IV 260 one end and the 3rd
The one end dividing 250 is connected, and one end of Part V 270 is connected with the other end of Part III 250.Sensing unit 200
The other end of Part IV 260 there is the first electrode 210, the other end of Part V 270 has the second electrode 220,
Wherein, the pin that each first electrode 210 is all corresponding with touch screen control chip with the second electrode 220 is connected.
In an embodiment of the present invention, the so-called mutually nested sensing unit referring to outside partly surrounds the sensing of inner side
Unit, the most as shown in Figure 7a, so can reach bigger coverage rate while ensureing precision, and reduce fortune
The complexity calculated, improves the response speed of touch screen.Certainly those skilled in the art also can use according to the thought of Fig. 7 a
Other mutually nested modes arrange sensing unit.In one embodiment of the invention, each sensing unit 200
Part III 250 is parallel with the Part III 250 of other sensing units 200, the 4th of each sensing unit 200
Points 260 parallel with the Part IV 260 of other sensing units 200, the Part V 270 of each sensing unit 200
Parallel with the Part V 270 of other sensing units 200.In one embodiment of the invention, sensing unit 200
Part III 250, Part IV 260 and Part V 270 at least one is rectangle, it is preferable that Part III
250, Part IV 260 and Part V 270 are rectangle.In this embodiment, due to rectangular configuration figure rule,
Therefore when finger lateral or longitudinal movement, the linearity is good, additionally, the spacing between two rectangular configuration is identical, it is simple to
Calculate, thus improve calculating speed.
In one embodiment of the invention, the Part IV 260 of each sensing unit 200 is long with Part V 270
Spend equal.
In one embodiment of the invention, substrate 100 is rectangle, between the first limit 110 and the second limit 120 mutually
Vertically, and it is mutually perpendicular between Part IV 260 and Part III 250, Part V 270 and Part III 250
Between be mutually perpendicular to.
In one embodiment of the invention, the spacing phase between the Part III 250 of adjacent two sensing units 200
Deng, the spacing between the Part IV 260 of adjacent two sensing units 200 is equal, adjacent two sensing units 200
Part V 270 between spacing equal.Thus can be by multiple sensing units 200 to touch screen first
Limit 110 and the second limit 120 are evenly dividing, thus improve arithmetic speed.The most in other embodiments of the invention,
Spacing between the Part III 250 of adjacent two sensing units 200 also can be unequal, or, adjacent two sensings
Spacing between the Part IV 260 of unit 200 also can be unequal, as shown in Figure 7b.Such as, due to user often
Touch the centre of touch screen, therefore the spacing between the sensing unit at touch screen center position can be reduced, from
And improve the accuracy of detection in centre.
In one embodiment of the invention, multiple sensing units 200 are symmetrical relative to the central shaft Y of substrate 100,
As shown in Figure 7a, central shaft Y is perpendicular to Part III 250, thus is more beneficial for improving precision.
As shown in Figure 7a, in this embodiment, the first electrode 210 and the second equal position of electrode 220 of sensing unit 200
On the first limit 110 of substrate 100.In this embodiment, after the touch location on sensing unit being detected,
The touch location on touch screen can be obtained.
It should be noted that above-mentioned Fig. 7 a is the present invention preferably embodiment, it is obtained in that bigger coverage rate, but
It is the changes that Fig. 7 a can be carried out some equivalents of other embodiments of the present invention, such as Part IV 260 and Part V
270 can be uneven.
Sensing unit in the embodiment of the present invention uses the structure of similar door shape, is not only simple in structure, it is simple to make, institute
Leaded all with on one side, design is convenient, reduces silver slurry cost and makes easily, having the biggest to reducing production cost
Help.
As shown in Figure 8, the schematic diagram when sensing unit for the embodiment of the present invention is touched.As it can be observed in the picture that first
Electrode is 210, and the second electrode is 220, and touch location is close to the second electrode, it is assumed that a length of the 10 of sensing unit
Individual unit length, and sensing unit is evenly divided into 10 parts, wherein, sensing unit Part III 250 a length of
A length of 3 unit lengths of 4 unit lengths, sensing unit Part IV 260 and Part V 270.Through inspection
Surveying, know that the ratio of the first resistance and the second resistance is 4:1, the length of the i.e. first electrode 210 to touch location is (by first
Resistance embodies) it is the 80% of whole sensing unit length.In other words, touch point is positioned at distance the first electrode 210 8
The position of individual unit length, knows, touch point is positioned at the position of 2 unit lengths at distance the second electrode 220.When
When finger moves, touch location can move accordingly, therefore just can determine whether that finger moves accordingly by the conversion of touch location
Dynamic track, thus judge the input instruction of user.
From the example above of Fig. 8 it can be seen that the calculation of the present invention is very simple, therefore, it is possible to be greatly enhanced
The response speed of touch screen detection.In an embodiment of the present invention, usual finger or other objects can touch multiple sensing
Unit, now can first obtain touch location each in these multiple sensing units being touched, then by asking flat
Equal mode calculates final touch location on the touchscreen.
As illustrated in fig. 9, for further embodiment Touch-screen testing equipment structure chart of the present invention.A reality in the present invention
Executing in example, the length of multiple sensing units is gradually increased, and each described sensing unit includes Part VI 280 and
Seven parts 290.One end of Part VI 280 has the first electrode 210, one end of Part VII 290 and Part VI
The other end of 280 is connected, and the other end of Part VII 290 has the second electrode 220.
Specifically, Part VI 280 is parallel with the first limit 110 of substrate 100, Part VII 290 and substrate 100
The second limit 120 parallel, and the first limit 110 and the second limit 120 adjacent.And each first electrode 210 and the second electricity
Pole 220 is all connected with the corresponding pin of touch screen control chip.
In a preferred embodiment of the invention, the Part VI 280 of each sensing unit 200 and other sensing units 200
Part VI 280 parallel, the Part VII of each sensing unit 200 290 and the 7th of other sensing units 200
Part 290 is parallel.The sensing unit coverage rate to touch screen can be effectively improved by such setting.At this
In a bright embodiment, in the Part VI 280 of sensing unit 200, Part VII 290, at least one is rectangle,
Preferably, Part VI 280, Part VII 290 are rectangle.In this embodiment, advise due to rectangular configuration figure
Then, therefore when finger lateral or longitudinal movement, the linearity is good, additionally, the spacing between two rectangular configuration is identical,
It is easy to calculate.
Sensing unit in the touch screen detection device of the embodiment of the present invention uses the two ends of double-end monitor, i.e. sensing unit
It is respectively provided with electrode, and each electrode is all connected with the corresponding pin of touch screen control chip, logical when carrying out touching detection
Cross sensing unit self and can realize the location to touch point.
What is more important, the present invention realizes touch location really by calculating ratio between the first resistance and the second resistance
Fixed, therefore for current rhombus or triangular design, due to when determining touch location, it is not necessary to calculate certainly
The size of electric capacity, and the size of self-capacitance do not interferes with the precision of touch location, the dependence to self-capacitance accuracy of detection is dropped
Low, thus improve certainty of measurement, improve the linearity.Additionally, due to the Part V 270 of the embodiment of the present invention,
In Part VI 280 and Part VII 290, any one can be all the rectangle of regular shape, therefore relative to current
For the irregular shape such as rhombus or triangle, it is also possible to improve the linearity further.
In one embodiment of the invention, the Part VI 280 of each sensing unit and Part VII 290 length phase
Deng such that it is able to improve arithmetic speed.Preferably, substrate 100 is rectangle, the first limit 110 and the second limit 120 it
Between be mutually perpendicular to.First limit 110 and the second limit 120 are mutually perpendicular to, and not only make sensing unit design more regular,
Such as make also to be mutually perpendicular between the Part VI 280 of sensing unit and Part VII 290, thus improve touch
The coverage rate of screen, and be mutually perpendicular between Part VI 280 and Part VII 290 to improve the linear of detection
Degree.
In one embodiment of the invention, the spacing between adjacent two sensing units 200 is equal.The most permissible
By multiple sensing units 200, first limit 110 and second limit 120 of touch screen are evenly dividing, thus improve computing
Speed.
The most in another embodiment of the present invention, the spacing between adjacent two sensing units 200 can not also wait,
As shown in figure 9b, such as, often touch the centre of touch screen due to user, therefore can be by touch screen center position
Sensing unit between spacing reduce, thus improve the accuracy of detection in centre.
As illustrated in fig. 9, in this embodiment, the first electrode 210 of sensing unit 200 is positioned at the first of substrate 100
On limit 110, the second electrode 220 is positioned on the second limit 120 of substrate 100, and the first limit 110 and the second limit 120
It is mutually perpendicular to.In this embodiment, after the touch location on sensing unit being detected, can obtain at touch screen
On touch location.
As shown in Figure 10, the schematic diagram when sensing unit for the embodiment of the present invention is touched.As can be seen from Figure 10,
One electrode is 210, and the second electrode is 220, and touch location is close to the second electrode 220, it is assumed that the length of sensing unit
It is 10 unit lengths, and sensing unit is evenly divided into 10 parts, wherein, the Part VI 280 of sensing unit
A length of 5 unit lengths, a length of 5 unit lengths of the Part VII 290 of sensing unit.Through detection,
The ratio knowing the first resistance and the second resistance is 9:1, and the length of the i.e. first electrode 210 to touch location is (by the first resistance
Embody) it is the 90% of whole sensing unit length.In other words, touch point is positioned at distance the first electrode 210 9
The position of unit length, knows, touch point is positioned at the position of 1 unit length at distance the second electrode 220.
From the example above of Figure 10 it can be seen that the calculation of the present invention is very simple, therefore, it is possible to be greatly enhanced
The response speed of touch screen detection.
In one embodiment of the invention, multiple sensing units 200 are positioned at same layer, therefore have only to one layer of ITO
, thus while ensureing precision, greatly reduce manufacturing cost.
Sensing unit in the touch screen detection device of the embodiment of the present invention uses the two ends of double-end monitor, i.e. sensing unit
It is respectively provided with electrode, and each electrode is all connected with the corresponding pin of touch screen control chip, logical when carrying out touching detection
Cross sensing unit self and can realize the location to touch point.
What is more important, the present invention realizes touch location really by calculating ratio between the first resistance and the second resistance
Fixed, therefore for current rhombus or triangular design, due to when determining touch location, it is not necessary to calculate certainly
The size of electric capacity, and the size of self-capacitance do not interferes with the precision of touch location, the dependence to self-capacitance accuracy of detection is dropped
Low, thus improve certainty of measurement, improve the linearity.Additionally, due to the Part V 270 of the embodiment of the present invention,
In Part VI 280 and Part VII 290, any one can be all the rectangle of regular shape, therefore relative to current
For the irregular shape such as rhombus or triangle, it is also possible to improve the linearity further.
In sum, the embodiment of the present invention is by applying level signal to the electrode at sensing unit two ends, if this sensing
Unit is touched, then can form self-capacitance by this sensing unit, and therefore the present invention can be to this by the level signal applied
Self-capacitance is charged, and according to the proportionate relationship between the first resistance and the second resistance determine in a first direction touch
Touch position.The most in one embodiment of the invention, the proportionate relationship between the first resistance and the second resistance according to
During to described self-capacitance charge/discharge, carry out from described first electrode and/or the second electrode detecting the first detected value obtained
And second the proportionate relationship between detected value be calculated.Therefore from the first electrode and/or this self-capacitance of the second electrode detection
The first detected value produced during charge/discharge and the second detected value.So, by the first detected value and the second detected value just
Touch point can be reacted and be positioned at the position of this sensing unit, thus further determine that the position at touch screen, the touch point.
For the sensing unit of Fig. 5 and Fig. 6, after determining the touch location on first direction, in addition it is also necessary to
Touch location in a second direction is determined further according to the position of the sensing unit being touched.Enforcement in the present invention
In example, can refer to shown in Fig. 5 and 6, if be detected that the first detected value of certain sensing unit or the second detected value are big
In predetermined threshold value, then illustrate that this sensing unit is touched.Assume that second sensing unit (its vertical coordinate is M) is touched
Touching, touch location the most in a second direction is just the coordinate M of second sensing unit.Afterwards, further according to first party
Touch location on touch location upwards and second direction determines position on the touchscreen, touch point.
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, be often necessary the essential spacing at concrete sensing unit determined above go out finger
The position of (or other capacitive object).Finger touch panel on draw runner or touch pad is typically larger than any sense
Answer unit.In order to use a center to calculate the position after touch, it is scanned this array being given with checking
Sensing station be effective, be to be greater than to preset touch for the requirement of a number of adjacent sensing unit signal
Threshold value.After finding the strongest signal, this signal and those closing signals being more than touch threshold are used to calculate
Center:
Wherein, locating the label of sensing unit centered by Ncent, n is the number sensing unit being touched being detected, i
For the sequence number of the sensing unit that is touched, 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:
As shown in figure 11, for the contactor control device schematic diagram of one embodiment of the invention.This contactor control device includes by substrate 100
The touch screen detection device that constituted with multiple disjoint sensing units 200, touch screen control chip 300.Wherein,
A part of pin in touch screen control chip 300 is connected with the first electrode 210 of multiple sensing units 200, touches
Another part pin in screen control chip 300 is connected with the second electrode 220 of multiple sensing units 200, and touches
The screen control chip 300 first electrode 210 to multiple sensing units 200 and/or the second electrode 220 apply level signal,
The self-capacitance charging that this level signal produces to sensing unit 200 when sensing unit 200 is touched.
As shown in figure 12, for the structure chart of embodiment of the present invention touch screen control chip.Touch screen control chip 300 wraps
Include charging module 310, discharge module 320, detection module 330 and control and computing module 340.Wherein, charging mould
Block 310 is in first time charging process, and in multiple sensing units, the first electrode 210 of a sensing unit is executed
Add high level signal, and by the second electrode 220 ground connection a sensing unit is produced when a sensing unit is touched
Raw self-capacitance carries out charging for the first time；In second time charging process, charging module 310 is in multiple sensing units
Second electrode 220 of one sensing unit applies high level signal, and by the first electrode 210 ground connection so that self-capacitance is entered
Row second time charging；In third time charging process, the charging module 310 sensing in multiple sensing units is single
An applying high level signal in first electrode 210 of unit and the second electrode 220, and by the first electrode 210 and the
Another ground connection in two electrodes 220, to carry out self-capacitance charging for the third time.Discharge module 320 is in charging
After module 310 is to self-capacitance charging for the first time and second time charging, carry out self-capacitance discharging for the first time；And filling
After electricity module 310 is to self-capacitance third time charging, by the first electrode 210 and the second electrode 200 of a sensing unit
All ground connection, and another in the first electrode 210 of a sensing unit and the second electrode 220 is disconnected, with to from
Electric capacity carries out second time and discharges.Detection module 330 is for carrying out from the first corresponding electrode 210 or the second electrode 220
Detect the first detection changing value to obtain between charging for the first time and second time charging, and from the first corresponding electrode 210
Or second electrode 220 carry out detecting the second detection changing value to obtain between third time charging and second time electric discharge.Control
System and computing module 340 are for charging module 310, discharge module 320, first detection module 330 and the second detection
Module 340 is controlled, and according to the first detected value and/or the second detected value and the 3rd detected value and/or the 4th detection
Value calculate self-capacitance to the first resistance between the first electrode and self-capacitance to described second electrode between the second resistance
Proportionate relationship, and determine touch location according to the proportionate relationship of the first resistance and the second resistance.At embodiments of the invention
In, control and computing module 340 can control charging module 310 in the way of scanning and execute to multiple sensing units successively
Add corresponding voltage, can also detect successively in the way of scanning when detection simultaneously, or, it is also possible to scanning
Mode control discharge module 320 and successively self-capacitance produced by the sensing unit being touched in multiple sensing units entered
Row electric discharge.
In one embodiment of the invention, the first detected value and the second detected value can be current detection value, self-capacitance inspection
One or more in measured value, level signal detected value and change in electrical charge amount.
In one embodiment of the invention, first detection module 330 and the second detection module 340 are CTS (electric capacity
Detection module).
In one embodiment of the invention, control and computing module 340 is additionally operable to according to the sensing unit 200 being touched
Position determine touch location in a second direction, and according in the touch location on first direction and second direction
Touch location determines position on the touchscreen, described touch point.Specifically, control and computing module 340 passes through barycenter
Algorithm determines the touch location in described second direction.
In one embodiment of the invention, first direction is the length direction of sensing unit 200, and second direction is vertical
Straight in the direction of sensing unit 200 length direction, sensing unit horizontal parallel is arranged or vertical parallel setting.
In a preferred embodiment of the invention, multiple disjoint sensing units are positioned at same layer, thus are ensureing
On the premise of accuracy of detection, it is effectively reduced manufacturing cost.
The invention allows for a kind of portable electric appts, including contactor control device as above.
The embodiment of the present invention is by applying level signal to the electrode at sensing unit two ends, if this sensing unit is touched,
Then this sensing unit can form self-capacitance, and therefore this self-capacitance can be charged by the present invention by the level signal applied,
And the touch location on touch screen is determined according to the proportionate relationship between the first resistance and the second resistance.And pass through the present invention
The detection mode that self-capacitance carries out twice charging of embodiment, to offset some immeasurablel physical parameter or to subtract
The measurement of few physical quantity, thus on the premise of ensureing detection speed, it is effectively improved accuracy of detection.
The embodiment of the present invention proposes the self-capacitance detection mode of a kind of novelty, when sensing unit is touched, touch point
This sensing unit just can be divided into two resistance, thus while carrying out self-capacitance detection, consider that the two resistance just may be used
To determine position on this sensing unit, the touch point.The simple in construction of the embodiment of the present invention, and for a sensing
For unit, can be charged from its first electrode and/or the second electrode or discharge, and carry out when charge or discharge
Detection, can not only reduce RC constant, time-consuming raising efficiency, and also ensure that coordinate will not offset.This
Outward, the embodiment of the present invention can also be effectively improved the to-noise ratio of circuit, reduces circuit noise, improves the sensing linearity.
It addition, owing to the sensing unit being touched being charged during detection, small area analysis, energy wherein can be produced
Enough Vcom level signals that eliminates well, therefore can phase on the impact of the self-capacitance of sensing unit generation in touch screen
Screenmask layer and concerned process steps should be eliminated, such that it is able to reduce into further while enhancing capacity of resisting disturbance in ground
This.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or
Person's feature is contained at least one embodiment or the example of the present invention.In this manual, the signal to above-mentioned term
Property statement be not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or
Feature can combine in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand these embodiments can be carried out without departing from the principles and spirit of the present invention multiple change, amendment,
Replacing and modification, the scope of the present invention is limited by claims and equivalent thereof.
Claims (21)
1. the touch detecting method of a touch screen, it is characterised in that touch screen includes multiple disjoint sensing unit,
The two ends of each sensing unit are respectively provided with the first electrode and the second electrode, said method comprising the steps of:
In the plurality of sensing unit, the first electrode of a sensing unit applies high level signal, and by described second electricity
Pole ground connection is carried out for the first time with the self-capacitance produced one sensing unit when one sensing unit is touched
Charging；
In the plurality of sensing unit, described second electrode of a sensing unit applies high level signal, and by described the
One electrode ground connection is charged so that described self-capacitance to carry out second time；
Carry out detecting to obtain the charging of described first time and described second time from corresponding described first electrode or the second electrode
The first detection changing value between charging, and carry out described self-capacitance discharging for the first time；
The high electricity of an applying in first electrode of a sensing unit in the plurality of sensing unit and the second electrode
Ordinary mail number, and another in described first electrode and the second electrode is disconnected, to carry out described self-capacitance filling for the third time
Electricity；
First electrode and the equal ground connection of the second electrode of one sensing unit are put so that described self-capacitance to carry out second time
Electricity；
Carry out detecting to obtain the charging of described third time and described second time from corresponding described first electrode or the second electrode
The second detection changing value between electric discharge；
Calculate between described self-capacitance extremely described first electrode according to described first detection changing value and the second detection changing value
The first resistance and described self-capacitance to the proportionate relationship of the second resistance between described second electrode；And
Touch location is determined according to the proportionate relationship between described first resistance and described second resistance.
2. the touch detecting method of touch screen as claimed in claim 1, it is characterised in that described first detection changing value
It is current detecting changing value, self-capacitance detection changing value, level signal detection changing value and electric charge with the second detection changing value
One or more in variable quantity.
3. the touch detecting method of touch screen as claimed in claim 1, it is characterised in that described sensing unit is rectangle,
And the first direction of the plurality of sensing unit and described touch screen is parallel to each other, described touch location is in described first party
Touch location upwards.
4. the touch detecting method of touch screen as claimed in claim 3, it is characterised in that described sensing unit includes:
Multiple Part I and multiple parallel Part II, wherein, by described the between adjacent described Part I
Two parts be connected, to form multiple the first alternately arranged groove and the second groove, wherein, the plurality of first groove and
The opening direction of the plurality of second groove is contrary, and described touch location is touching object touch in said first direction
Position.
5. the touch detecting method of the touch screen as described in claim 3 or 4, it is characterised in that also include:
Position according to the described sensing unit being touched determines touch location in a second direction；And
Determine that touch point is on the touchscreen according to the touch location on described first direction and the touch location in second direction
Position.
6. the touch detecting method of touch screen as claimed in claim 5, it is characterised in that touching in described second direction
Touch position to be determined by centroid algorithm.
7. touch detecting method as claimed in claim 5, it is characterised in that described first direction is described sensing unit
Length direction, described second direction is to be perpendicular to the direction of described sensing unit, described sensing unit horizontal parallel arrange
Or vertical parallel setting.
8. the touch detecting method of touch screen as claimed in claim 1, it is characterised in that described sensing unit includes:
Part III, one end of described Part III has described first electrode；
Part IV, one end of described Part IV is connected with the other end of described Part III, described Part IV another
One end has described second electrode.
9. the touch detecting method of touch screen as claimed in claim 1, it is characterised in that described sensing unit includes:
Part V；
Disjoint Part VI and Part VII, described Part VI one end is connected with one end of described Part V, institute
The other end of one end and described Part V of stating Part VII is connected, and the other end of described Part VI has described first
Electrode, and the other end of described Part VII has described second electrode.
10. a contactor control device, it is characterised in that including:
Substrate；
Multiple disjoint sensing units, the plurality of sensing unit is formed on described substrate, and each sensing unit
Two ends be respectively provided with the first electrode and the second electrode respectively；
Touch screen control chip, described touch screen control chip includes charging module, discharge module, detection module and control
And computing module, wherein:
Described charging module, is used in first time charging process, a sensing unit in the plurality of sensing unit
First electrode apply high level signal, and by described second electrode ground connection with when one sensing unit is touched to institute
The self-capacitance stating a sensing unit generation carries out charging for the first time；In second time charging process, to the plurality of sensing
In unit, described second electrode of a sensing unit applies high level signal, and by described first electrode ground connection with to described
Self-capacitance carries out second time and charges；A sensing unit in third time charging process, in the plurality of sensing unit
The first electrode and the second electrode in an applying high level signal, and by another in the first electrode and the second electrode
Disconnect, to carry out described self-capacitance charging for the third time；
Described discharge module, after at described charging module to the charging for the first time of described self-capacitance and second time charging,
Carry out described self-capacitance discharging for the first time；And after described charging module is to the third time charging of described self-capacitance, by institute
State the first electrode and the equal ground connection of the second electrode of a sensing unit, to carry out described self-capacitance discharging for the second time,
Described detection module, for carrying out detecting to obtain described first time from corresponding described first electrode or the second electrode
The first detection changing value between charging and the charging of described second time, and enter from corresponding described first electrode or the second electrode
Row detection is to obtain the second detection changing value between the charging of described third time and the electric discharge of described second time；And
Described control and computing module, for first detection module, the second detection module, described charging module and described
Discharge module is controlled, and described control and computing module are according to described first detection changing value and the second detection changing value
Calculate the first resistance between described self-capacitance extremely described first electrode and between described self-capacitance extremely described second electrode
Proportionate relationship between second resistance, and determine tactile according to the proportionate relationship between described first resistance and described second resistance
Touch position.
11. contactor control devices as claimed in claim 10, it is characterised in that described first detection changing value and the second detection
Changing value is in current detecting changing value, self-capacitance detection changing value, level signal detection changing value and change in electrical charge amount
One or more.
12. contactor control devices as claimed in claim 11, it is characterised in that described detection module is capacitive detection module.
13. contactor control devices as claimed in claim 10, it is characterised in that described sensing unit is rectangle, and described many
Individual sensing unit is parallel to each other with the first direction of described touch screen, described touch location be in said first direction touch
Touch position.
14. contactor control devices as claimed in claim 13, it is characterised in that described sensing unit includes:
Multiple Part I and multiple parallel Part II, wherein, by described the between adjacent described Part I
Two parts be connected, to form multiple the first alternately arranged groove and the second groove, wherein, the plurality of first groove and
The opening direction of the plurality of second groove is contrary, and described touch location is touching object touch in said first direction
Position.
15. contactor control devices as described in claim 13 or 14, it is characterised in that
Described control and computing module, be additionally operable to according to described in the position of sensing unit that is touched determine in a second direction
Touch location, and determine that touch point exists according to the touch location on described first direction and the touch location in second direction
Position on touch screen.
16. contactor control devices as claimed in claim 15, it is characterised in that described control and computing module are calculated by barycenter
Method determines the touch location in described second direction.
17. contactor control devices as claimed in claim 15, it is characterised in that described first direction is described sensing unit
Length direction, described second direction is to be perpendicular to the direction of described sensing unit, described sensing unit horizontal parallel arrange or
Vertical parallel setting.
18. contactor control devices as claimed in claim 10, it is characterised in that the plurality of disjoint sensing unit is positioned at
Same layer.
19. contactor control devices as claimed in claim 10, it is characterised in that described sensing unit includes:
Part III, one end of described Part III has described first electrode；
Part IV, one end of described Part IV is connected with the other end of described Part III, described Part IV another
One end has described second electrode.
20. contactor control devices as claimed in claim 10, it is characterised in that described sensing unit includes:
Part V；
Disjoint Part VI and Part VII, described Part VI one end is connected with one end of described Part V, institute
The other end of one end and described Part V of stating Part VII is connected, and the other end of described Part VI has described first
Electrode, and the other end of described Part VII has described second electrode.
21. 1 kinds of portable electric appts, it is characterised in that include the touch-control as described in any one of claim 10-20
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110459313.XA CN102902431B (en) | 2011-07-26 | 2011-12-31 | Touch detecting method and contactor control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110210959.4 | 2011-07-26 | ||
| CN2011102110182 | 2011-07-26 | ||
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| CN201110210959 | 2011-07-26 | ||
| CN201110459313.XA CN102902431B (en) | 2011-07-26 | 2011-12-31 | Touch detecting method and contactor control device |
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| CN102902431A CN102902431A (en) | 2013-01-30 |
| CN102902431B true CN102902431B (en) | 2016-09-07 |
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| CN201110459466.4A Active CN102902437B (en) | 2011-07-26 | 2011-12-31 | Touch-screen testing equipment and contactor control device |
| CN2011205736297U Expired - Lifetime CN202600660U (en) | 2011-07-26 | 2011-12-31 | Touch control device and portable electronic equipment |
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| CN2011205737919U Expired - Lifetime CN202649984U (en) | 2011-07-26 | 2011-12-31 | Touch screen detection device, touch control device, and portable electronic device |
| CN2011205738593U Expired - Lifetime CN202795285U (en) | 2011-07-26 | 2011-12-31 | Touch control device and portable electronic device |
| CN201110459367.6A Active CN102902434B (en) | 2011-07-26 | 2011-12-31 | Touch detecting method and contactor control device |
| CN201110459473.4A Active CN102902438B (en) | 2011-07-26 | 2011-12-31 | Touch detecting method, touch screen detection device and contactor control device |
| CN201110459408.1A Active CN102902435B (en) | 2011-07-26 | 2011-12-31 | Touch detecting method and contactor control device |
| CN2011205736916U Expired - Lifetime CN202548806U (en) | 2011-07-26 | 2011-12-31 | Touch control apparatus and portable electronic equipment |
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Address after: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee after: BYD Semiconductor Co.,Ltd. Address before: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN BYD MICROELECTRONICS Co.,Ltd. Address after: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee after: BYD Semiconductor Co.,Ltd. Address before: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: BYD Semiconductor Co.,Ltd. |