CN108919994A - Condenser type control point sensing device and method - Google Patents
Condenser type control point sensing device and method Download PDFInfo
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- CN108919994A CN108919994A CN201810653604.4A CN201810653604A CN108919994A CN 108919994 A CN108919994 A CN 108919994A CN 201810653604 A CN201810653604 A CN 201810653604A CN 108919994 A CN108919994 A CN 108919994A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 66
- 238000005859 coupling reaction Methods 0.000 claims abstract description 66
- 230000008878 coupling Effects 0.000 claims abstract description 65
- 239000004020 conductor Substances 0.000 claims abstract description 40
- 230000005611 electricity Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 15
- 239000003990 capacitor Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
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Abstract
The embodiment of the invention discloses a kind of condenser type control point sensing device and methods, device includes a sensing unit array and a control circuit, it and include respectively towards multiple sensing units of a first direction and second direction extension in the sensing unit array, wherein any sensing unit includes：One capacitive coupling electrode coverage area, wherein including adjacent a first electrode and a second electrode, the width ratio between the first electrode and the second electrode generates variation with the first direction；Wherein, the control circuit is electrically connected to the first electrode and the second electrode, method operates in the control circuit, whether to sense a conductor using the first electrode, the second electrode close to the electrode coverage area, and the conductor is sensed using the width ratio between the first electrode and the second electrode close to a subregion in the electrode coverage area in multiple subregions, and then determine the position at a control point arrived corresponding to the conductor.
Description
Technical field
The present invention relates to a kind of condenser type control point sensing device and methods, the capacitor being espespecially applied on large size panel
Formula control point sensing device and method.
Background technique
With popularizing for smart phone, the input instructed with the display for having touch function is most of
User be familiar with.But by identical capacitance type touch control sensing technical application to large-sized monitor, (such as large scale is flat
Surface TV, Interactive Advertising billboard or interactive multimedia information station etc.) when, but because of capacitance type touch control sensing technology hand
Sense line quantity required for section explodes therewith because display area becomes larger, and then makes the number of pins of control circuit chip
Increase therewith.In this way, which excessive number of pins will cause the cost of chip to increase, also lead to tired in display panel production
Difficulty is promoted.Therefore, it is badly in need of proposing a kind of condenser type control point that can improve above-mentioned existing missing for the above status
Sensing device and method.
Summary of the invention
Therefore, in order to solve problem above, the embodiment of the invention provides a kind of condenser type control point sensing device and one
Kind of condenser type control point method for sensing, it is possible to reduce the number of pins in large touch display, reduce chip cost and
The manufacture difficulty of display panel.
On the one hand a kind of condenser type control point sensing device that the embodiment of the present invention provides, including：One sensing unit array
With a control circuit, and the sensing unit array includes the multiple sensing lists extended respectively towards a first direction and a second direction
Member, wherein any sensing unit includes：One capacitive coupling electrode coverage area, the first side length extended along the first direction are big
It include one of adjacent first electrode in the second side length extended along the second direction, the capacitive coupling electrode coverage area and one the
Two electrodes form an electrode gap area between the first electrode and the second electrode, the first electrode of the electrode gap area two sides
Width ratio between the second electrode generates variation with the first direction；One first without capacitive coupling area, is formed in the capacitor
Between coupling electrode coverage area and one first adjacent adjacent sensing unit；And one second without capacitive coupling area, is formed in this
Between capacitive coupling electrode coverage area and one second adjacent adjacent sensing unit；Wherein, which is electrically connected to this
First electrode and the second electrode, operate in the control circuit of a first state, to utilize the first electrode, second electricity
Whether pole senses a conductor with the electrode gap area close to the electrode coverage area, operates in the control electricity of one second state
Road, then to sense the conductor using the width ratio between the first electrode and the second electrode close to the electrode coverage area
A subregion in interior multiple subregions, and then determine the position at a control point arrived corresponding to the conductor.
In one embodiment of the invention, the first electrode in the capacitive coupling electrode coverage area and the second electrode
Respectively one first triangular-shaped electrodes and one second triangular-shaped electrodes, first triangular-shaped electrodes, second triangular-shaped electrodes with
The electrode gap area forms a rectangle, between first triangular-shaped electrodes and second triangular-shaped electrodes of the electrode gap area two sides
Width ratio with the first direction generate variation.
In one embodiment of the invention, the first electrode in the capacitive coupling electrode coverage area and the second electrode
Respectively one first trapezoidal electrode and one second trapezoidal electrode, between the first trapezoidal electrode, the second trapezoidal electrode and the electrode
Gap area forms a rectangle, the first trapezoidal electrode of the electrode gap area two sides and the second trapezoidal interelectrode width ratio with
The first direction generates variation.
In one embodiment of the invention, this first without be provided in capacitive coupling area the first electrode or this second electricity
An at least signal connecting line between pole and the control circuit, first width without capacitive coupling area are greater than a half-breadth of the conductor
Spend and be less than the width of the conductor.
In one embodiment of the invention, this, should second without being separately provided with an additional function electrode in capacitive coupling area
Additional function electrode is not driven when the control circuit operates in the first state with second state.
In one embodiment of the invention, which is greater than the half of the conductor width.
In one embodiment of the invention, when which operates in the first state, to sense when this is led
When body is close to the electrode coverage area, to variation caused by coupling capacitance between the first electrode and the second electrode.
In one embodiment of the invention, first second electrode without capacitive coupling area two sides and the first electrode
Between width ratio generate variation with the first direction, operate in the control circuit of second state, then to using this
Width ratio between one electrode and the second electrode senses the conductor close to this first without multiple subregions in capacitive coupling area
In a subregion, and then determine the position at a control point arrived corresponding to the conductor.
On the other hand, a kind of condenser type control point method for sensing provided in an embodiment of the present invention is applied to a sensing unit
On array, and in the sensing unit array include the multiple sensing lists extended respectively towards a first direction and a second direction
Member, wherein any sensing unit includes：One capacitive coupling electrode coverage area, the first side length extended along the first direction are big
It include an adjacent first electrode in the second side length extended along the second direction, the capacitive coupling electrode coverage area and one the
Two electrodes form an electrode gap area between the first electrode and the second electrode, the first electrode of the electrode gap area two sides
Width ratio between the second electrode generates variation with the first direction, which includes the following steps：Using this
One electrode, the second electrode sense a conductor with the electrode gap area and cover close to the electrode in the sensing unit array
Area；And the conductor is sensed using the width ratio between the first electrode and the second electrode close in the electrode coverage area
A subregion in multiple subregions, and then determine the position at a control point arrived corresponding to the conductor.
In one embodiment of the invention, it is sensed using the first electrode, the second electrode and the electrode gap area
The method of the conductor close to the electrode coverage area in the sensing unit array is out：It senses when the conductor is contained close to the electrode
When cover region, to variation caused by coupling capacitance between the first electrode and the second electrode.
Present invention has one or more beneficial effects：Drawing in large touch display can be reduced
Foot number reduces the manufacture difficulty of chip cost and display panel.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Figure 1A is the schematic layout pattern of the induction electrode of one embodiment of the invention.
Figure 1B is the adjacent electrode schematic diagram in Figure 1A.
Fig. 1 C is to utilize the sensing resolution ratio schematic diagram on the sensing unit S11 of two-wire detection technology.
Fig. 2A is the second state sensing schematic diagram for increasing resolution ratio using adjacent electrode Y11 and electrode X11.
Fig. 2 B is the sensing schematic diagram for increasing the second state of resolution ratio using adjacent electrode X11 and electrode Y21.
Fig. 3 A, Fig. 3 B and Fig. 3 C are the shape for two adjacent electrodes in the proposed electrode coverage area of the embodiment of the present invention
Change schematic diagram.
Fig. 4 is at this second without the schematic diagram for being separately provided with an additional function electrode in capacitive coupling area.
Fig. 5 is the steps flow chart schematic diagram of the method for sensing proposed for the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A referring to Figure 1, by being the one kind for improving the missing of prior art means and proposing in one embodiment of the invention
The schematic layout pattern of induction electrode, wherein mainly representing the induction electrode distribution completed on the surface of the same substrate 10
Schematic diagram.Electrode Y11, Y12, Y13, Y14, Y15, Y16 (can of course extend to Y1N, but figure is not shown) are string
It connects on same signal connecting line Y1, and so on, (figure is not painted by electrode Y21, Y22, Y23, Y24, Y25, Y26 to Y2N
It out) is to be serially connected on same signal connecting line Y2.And electrode X11, X21 ... it (can of course be but not shown up to XM1
Out) be also be serially connected on same signal connecting line X1 (contact is being not shown in the figure), electrode X12, X22 ..., XM2 it is (not shown
It out) is also to be serially connected on same signal connecting line X2 (not shown go out).And the signal of Y1, Y2 to YM and X1, X2 to XN connect
Wiring will be electrically connected to control circuit chip 19.
Adjacent electrode schematic diagram in B referring to Figure 1 again is the partial enlargement diagram in Figure 1A, such as electrode Y11
With electrode X11, main body is all completed by triangle, and electrode Y11 and electrode X11 form electrode gap area G11 between the two, and electric
The region that pole Y11, electrode X11 and electrode gap area G11 are covered then claims electrode coverage area A11.Left and right in horizontal direction in figure
It is equipped between two adjacent electrode coverage area A11 and A21 one first without capacitive coupling area L11, the present embodiment is to allow electrode
X11, X21 ..., the signal connecting line that is extended of the XM1 wiring region that passes through (this not shown go out).In addition, in vertical direction in figure
Two adjacent electrode coverage area A11 and A12 up and down between be equipped with one second without capacitive coupling area D11.In this legend, this
Two without not being furnished with signal connecting line in capacitive coupling area D11.
And electrode coverage area A11, first without capacitive coupling area L11 and second without capacitive coupling area D11 form one sensing
Cell S 11, and multiple sensing units are arranged to make up sensing unit array (array), arrangement mode is just as battle array shown in figure 1A
It arranges (array).When user by finger (or other conductors) close to the region S11 when, it will influence between electrode Y11 and electrode X11
Coupling capacitance, therefore by driving and measurement of the control circuit chip 19 to signal connecting line Y1 and signal connecting line X1,
The coupling capacitance for being different from the other regions not influenced by finger (or other conductors) will can be sensed, and then judges to sell
Refer to the touch position of (or other conductors).And the method for driving and measurement that control circuit chip 19 carries out may refer to inventor
The practice proposed in United States Patent (USP) US9430103 case (hereinafter referred to as two-wire detection technology), it will not be described here.
C referring to Figure 1, for using the sensing resolution ratio schematic diagram on the sensing unit S11 of two-wire detection technology, due to
The advantages of two-wire detection technology, the finger of user is fully located at electrode coverage area A11 and the finger of user is located at electrode
Difference between intersection of the coverage area A11 and first without capacitive coupling area L11 is fully located at electrode there are also the finger of user and contains
The finger of cover region A11 and user are located at the difference between intersection of the electrode coverage area A11 and second without capacitive coupling area D11
It is different, it can be sensed by two-wire detection technology, and then allow control circuit chip 19 that can pick out four as illustrated in the drawing
Position P1, P2, P3, P4.In this way, by the way that first is put with second without capacitive coupling area D11 area without capacitive coupling area L11
Greatly, the electrode number in touch-control area can be allowed to reduce, be further reduced signal connecting line and control circuit chip 19
Number of pins.Then the use for cooperating two-wire detection technology, can sense between no capacitive coupling area and electrode coverage area
Finger position can allow sensing resolution multiplied and reduce signal pins number.For example, second width without capacitive coupling area
Degree is set greater than the half of the conductor width, and the electrode number in touch-control area can be allowed to reduce, and is further reduced signal company
The number of pins of wiring and control circuit chip 19.
Furthermore the embodiment of the present invention can be as shown, change the length-width ratio of A11 (or S11), by wherein at least one
Axial elongation (vertical direction as shown in the figure), so by the number of electrodes that can allow at least one axial again and corresponding
Signal connecting line quantity is reduced again.By taking the figure number of Figure 1A as an example, the numerical value of N can be allowed to become smaller, therefore the number of electrodes of vertical direction
Amount and the quantity of corresponding signal connecting line (X1, X2 to XN) are reduced.
Consequently, it will be apparent that can allow the P1 in Fig. 1 C between P4 and between P2 and P3 at a distance from elongate, cause to draw
The resolution ratio of length direction (just referring to vertical direction for above-mentioned) is lower.And when certain applications need to increase point of vertical direction
When resolution, control circuit chip 19 can execute the condenser type control point method for sensing that the embodiment of the present invention is proposed,
From a first state reconvert to the second state, and then start another sensing mode to reach this demand.In detail, above-mentioned
First state is the position sensing for carrying out large area, can use two-wire detection technology or other capacitive sensing technologies to sense
The position of user's finger out is to put in the region of that sensing unit (such as S11) of substrate 10 in figure 1A, and work as sense
The second state can be entered after measuring some sensing unit.The method and step of the second state is illustrated again below.
Fig. 2A is referred to, for using electrode Y11 and electrode X11, the second of resolution ratio is increased to the embodiment of the present invention
The sensing mode of state is illustrated.As seen from the figure, in vertical direction the different finger contact area 20,21 in position with
22 can generate different coupling areas, therefore, the control in Fig. 1 from electrode X11 for electrode coverage area A11 electrode Y11 respectively
Circuit chip 19 carries out capacitance sensing to electrode Y11 and electrode X11 respectively, thereby measure finger respectively with electrode Y11 and electricity
Coupled capacitor ratio between the X11 of pole will so may determine that finger in vertical direction in that region.It is with Fig. 2A
Example, when finger contacts in region 22, contact area of the finger respectively between electrode Y11 and electrode X11 is about suitable, so ratio
Value about 1, and the coupled capacitor ratio Y11/X11 sensed at this time can order as an intermediate threshold.And when the coupling sensed
When closing capacitance ratio greater than the intermediate threshold, it can think when finger contact in region 21 (because Y11 contact area is much larger than
X11 contact area).Conversely, can think to contact when finger when the coupled capacitor ratio sensed is less than the intermediate threshold
Region 23 (because Y11 contact area is much smaller than X11 contact area).In this way, which this example can be again by electrode coverage area
A11 is divided into three blocks, increases the resolution ratio of vertical direction.In this way, cooperate the distribution schematic diagram of P1-P4 in Fig. 1 C,
This example can subdivide out three positions among P1 and P4, and then reach the electrode number for reducing vertical direction and reach drop
Low pin count purpose purpose.And it is the variation that can reach coupled capacitor ratio, this can be most preferably set first without capacitive coupling area
The width range of L11 is the half width greater than conductor (such as finger) but the width for being less than the conductor.
Fig. 2 B is referred to again, and for using electrode X11 and electrode Y21, resolution ratio is increased to the embodiment of the present invention
The sensing mode of second state is illustrated.As seen from the figure, as long as the first width without capacitive coupling area L11 is less than finger
Width, the different finger contact area 23,24 and 25 in position is for first without the capacitive coupling area two sides L11 in vertical direction
Electrode Y21 can also generate different coupling areas respectively from electrode X11.Therefore, divided using the control circuit chip 19 in Fig. 1
It is other that capacitance sensing is carried out to electrode Y21 and electrode X11, thereby measure coupling of the finger respectively between electrode Y21 and electrode X11
Capacitance ratio will so may determine that finger in vertical direction in that region.When finger contacts in region 24, hand
Refer to that the contact area respectively between electrode Y21 and electrode X11 is approximately equivalent, so ratio value is about 1, and sensed at this time
Coupled capacitor ratio Y21/X11 can be set to an intermediate threshold.And when the coupled capacitor ratio sensed is greater than the intermediate threshold
When, finger contact can be thought in region 23 (because Y21 contact area is much larger than X11 contact area).Conversely, when sensing
Coupled capacitor ratio when being less than the intermediate threshold, can think finger contact in region 25 (because Y21 contact area is far small
In X11 contact area).In this way, which this example can be divided into three blocks without capacitive coupling area L11 for first again, make vertical
The resolution ratio in direction increases.In this way, cooperate the distribution schematic diagram of P1-P4 in Fig. 1 C, this example can be among P2 and P3
Three positions are subdivided out, in this way, can will more effectively reduce the electrode number of vertical direction and reach reduction pin
The purpose of number.
Fig. 3 A, Fig. 3 B and Fig. 3 C are referred to, again for two adjacent electrodes in the electrode coverage area that is proposed for this case
The change in shape schematic diagram of (electrode Y11, electrode X11, electrode Y21 and electrode X21), two adjacent electrodes in each figure with should
Electrode gap area finally all forms a rectangle, and the width between the first electrode and the second electrode of the electrode gap area two sides
Degree ratio all generates variation with the first direction (this figure is vertical direction).The shape of adjacent electrode is two adjacent ladders in Fig. 3 A
Shape, the shape of adjacent electrode is approximately two triangles in Fig. 3 B, but adjacent boundary is to be serrated, as adjacent in Fig. 3 C
The boundary of electrode is then to present to concave towards (Concave) and concave towards down the curve of (Convex) respectively.And above-mentioned adjacent electrode
Shape can play the function of increasing resolution ratio, if width ratio between the adjacent electrode of electrode gap area two sides with this
One direction (this figure is vertical direction) generates variation.And there are many such deformations still, it is just not listed one by one herein.But the present invention is real
Applying technological means disclosed by example can allow excessive number of pins in script large touch display that can reduce, and so may be used
So that chip cost reduces, it will also decrease the difficulty in display panel production, and then improve the missing of the prior art, reach this hair
The purpose of bright embodiment.
In addition, in the above-described embodiments, this second without not being furnished with any electrode or signal wire in capacitive coupling area D11,
But if necessary, can also with as shown in figure 4, this second without being separately provided with an additional function electrode 40 in capacitive coupling area D11,
The additional function electrode will not all be driven when the control circuit 19 operates in the first state and second state.And this is attached
Functional electrode 40 is added to can be the floating electrode for not being connected to any voltage, to make visual effect more uniform.Additional function
Electrode 40 is also possible to be connected to the grounding electrode of a certain fixed voltage.Wherein grounding electrode can be otherwise used for sensing firmly by
Deformation caused by pressure, such as play the part of the application that the China Patent Publication No. that inventor is proposed is CN 103713742A
The role of interior mentioned ground plane 111 and 311, no longer repeats details herein.
In several embodiments provided herein, the various electrodes for being used to complete capacitance type touch control sensing technological means
The mode that can use in-building type on panel (On-Cell) is completed in large-sized monitor (such as large scale flat-surface television, interaction
Formula advertising billboard or interactive multimedia information station etc.) in, and be with transparent conductive film (such as tin indium oxide, referred to as
ITO material) is completed.
Certainly, device disclosed by above-described embodiment can also be realized by another way.For example, described above
Installation practice is only schematical, for example, the division of the unit, only a kind of logical function partition is practical to realize
When there may be another division manner, such as multichannel unit or component can be combined or can be integrated into another system, or
Some features can be ignored or not executed.Another point, shown or discussed mutual coupling or direct-coupling or communication
Connection can be through some interfaces, the indirect coupling or communication connection of device or unit, can be electrical property, mechanical or other
Form.
So the present invention also provides a kind of condenser type control point method for sensing that can be applied to similar hardware environment, class
It can be a kind of sensing unit array array like hardware environment, include respectively towards a first direction in the sensing unit array array
The multiple sensing units extended with a second direction, any sensing unit include：One capacitive coupling electrode coverage area, edge
The first side length that the first direction extends is greater than the second side length for extending along the second direction, in the capacitive coupling electrode coverage area
Including adjacent a first electrode and a second electrode, an electrode gap area is formed between the first electrode and the second electrode, it should
Width ratio between the first electrode and the second electrode of electrode gap area two sides generates variation with the first direction, and structure is thin
Above-mentioned Fig. 1 to Fig. 4 can be referred to by saving example, and the method for sensing is steps flow chart schematic diagram shown in fig. 5：Utilize first electricity
Pole, the second electrode sense a conductor with the electrode gap area and cover close to the electrode in the sensing unit array array
Area's (step 51), such as this can be judged using variation caused by coupling capacitance between the first electrode and the second electrode
Conductor has been approached the electrode coverage area.Then the width ratio between the first electrode and the second electrode is recycled to sense this
Close to that subregion (step 52) in the electrode coverage area in multiple subregions, final decision goes out to be arrived conductor corresponding to the conductor
A control point position (step 53).
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that：It still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of condenser type control point sensing device, which is characterized in that including a sensing unit array and a control circuit, and be somebody's turn to do
It include the multiple sensing units extended respectively towards a first direction and a second direction in sensing unit array, wherein any to be somebody's turn to do
Sensing unit includes：
One capacitive coupling electrode coverage area, the first side length extended along the first direction are greater than the extended along the second direction
Two side lengths, include adjacent a first electrode and a second electrode in the capacitive coupling electrode coverage area, the first electrode with should
An electrode gap area is formed between second electrode, the width ratio between the first electrode and the second electrode of the electrode gap area two sides
Example generates variation with the first direction；
One first without capacitive coupling area, be formed in the capacitive coupling electrode coverage area and one first adjacent adjacent sensing unit it
Between；And
One second without capacitive coupling area, be formed in the capacitive coupling electrode coverage area and one second adjacent adjacent sensing unit it
Between；
Wherein, which is electrically connected to the first electrode and the second electrode, operates in the control of a first state
Circuit, whether to sense a conductor using the first electrode, the second electrode and the electrode gap area close to the electrode
Coverage area operates in the control circuit of one second state, then to utilize the width between the first electrode and the second electrode
Ratio senses the conductor close to a subregion in the electrode coverage area in multiple subregions, and then determines that conductor institute is right
The position at the control point that should be arrived.
2. condenser type control point as described in claim 1 sensing device, which is characterized in that in the capacitive coupling electrode coverage area
The first electrode and the second electrode be respectively one first triangular-shaped electrodes and one second triangular-shaped electrodes, first triangle
Electrode, second triangular-shaped electrodes and the electrode gap area form a rectangle, first triangle of the electrode gap area two sides
Width ratio between electrode and second triangular-shaped electrodes generates variation with the first direction.
3. condenser type control point as described in claim 1 sensing device, which is characterized in that in the capacitive coupling electrode coverage area
The first electrode and the second electrode be respectively one first trapezoidal electrode and one second trapezoidal electrode, the first trapezoidal electrode,
The second trapezoidal electrode and the electrode gap area form a rectangle, the first trapezoidal electrode of the electrode gap area two sides and this
Two trapezoidal interelectrode width ratios generate variation with the first direction.
4. condenser type control point as described in claim 1 sensing device, which is characterized in that this in capacitive coupling area first without setting
At least signal connecting line being equipped between the first electrode or the second electrode and the control circuit, this is first without capacitive coupling area
Width be greater than the conductor a half width and be less than the conductor width.
5. condenser type control point as described in claim 1 sensing device, which is characterized in that this is second without another in capacitive coupling area
It is provided with an additional function electrode, the additional function electrode is when the control circuit operates in the first state and second state
It is not driven.
6. condenser type control point as described in claim 1 sensing device, which is characterized in that second width without capacitive coupling area
Degree is greater than the half of the conductor width.
7. condenser type control point as described in claim 1 sensing device, which is characterized in that the control circuit operate in this first
When state, to sense when the conductor is close to the electrode coverage area, between coupling electricity the first electrode and the second electrode
Variation caused by capacitance.
8. condenser type control point as described in claim 1 sensing device, which is characterized in that this is first without capacitive coupling area two sides
The second electrode and the first electrode between width ratio with the first direction generate variation, operate in second state should
Control circuit, then to sensed using the width ratio between the first electrode and the second electrode conductor close to this first
Without a subregion in multiple subregions in capacitive coupling area, and then determine the position at a control point arrived corresponding to the conductor.
9. a kind of condenser type control point method for sensing, which is characterized in that it is applied on a sensing unit array, and the sensing list
It include the multiple sensing units extended respectively towards a first direction and a second direction in element array, wherein any sensing list
Member includes：One capacitive coupling electrode coverage area, the first side length extended along the first direction is greater than to be extended along the second direction
The second side length, include adjacent a first electrode and a second electrode, the first electrode in the capacitive coupling electrode coverage area
An electrode gap area is formed between the second electrode, the width between the first electrode and the second electrode of the electrode gap area two sides
Degree ratio generates variation with the first direction, which includes the following steps：
A conductor is sensed close in the sensing unit array using the first electrode, the second electrode and the electrode gap area
An electrode coverage area；And
It is more close in the electrode coverage area that the conductor is sensed using the width ratio between the first electrode and the second electrode
A subregion in a subregion, and then determine the position at a control point arrived corresponding to the conductor.
10. the condenser type control point method for sensing as described in claim the 9, which is characterized in that using the first electrode, be somebody's turn to do
Second electrode senses the conductor with the electrode gap area close to the method for the electrode coverage area in the sensing unit array
For：It senses when the conductor is close to the electrode coverage area to produced by coupling capacitance between the first electrode and the second electrode
Variation.
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