CN104182102B - mutual capacitance type touch control induction device - Google Patents
mutual capacitance type touch control induction device Download PDFInfo
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- CN104182102B CN104182102B CN201310205264.6A CN201310205264A CN104182102B CN 104182102 B CN104182102 B CN 104182102B CN 201310205264 A CN201310205264 A CN 201310205264A CN 104182102 B CN104182102 B CN 104182102B
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Abstract
The present invention provides a kind of mutual capacitance type touch control induction device, includes an induction electrode, the first driving electrodes and the second driving electrodes.Induction electrode has an electrode trunk, multiple first electrodes refer to and multiple second electrodes refer to.The flat shape of the electrode trunk is strip and its long side parallel to first direction.These first electrodes refer to extends from the electrode trunk towards the second direction vertical with first direction respectively.These second electrodes refer to extends from the electrode trunk in contrast to second direction respectively.First driving electrodes include the first main body.First main body has refers to multiple first depressed parts that are corresponding and being staggered with the plurality of first electrode.Second driving electrodes include the second main body.Second main body has refers to multiple second depressed parts that are corresponding and being staggered with these second electrodes.
Description
Technical field
The present invention is related to touch-control system, especially related to the electrode pattern design in touch-control system.
Background technology
As science and technology is showing improvement or progress day by day, the operation interface of various electronic products all more and more hommizations in recent years.For example,
Through Touch Screen, user can operate formula, input message/word/pattern directly with finger or stylus on screen,
Eliminate the need for the trouble of the input units such as keyboard or button.In fact, Touch Screen generally by an induction panel and is arranged at sense
The display at panel rear is answered to constitute.The position that electronic installation is touched according to user on induction panel, and show at that time
Show the picture that device is presented, to judge the meaning of this touching, and perform corresponding operating result.
Existing capacitance touching control technology can be divided into self-tolerant (self-capacitance) and mutual capacitance type (mutual-
Capacitance) two class.Fig. 1 is a kind of electrode configuration figure of the mutual-capacitive touch panel using single layer electrode structure.Induced electricity
Pole S11~S1N corresponds to driving electrodes D1, and induction electrode S21~S2N corresponds to driving electrodes D2, induction electrode S31~S3N
Correspond to driving electrodes D4 corresponding to driving electrodes D3, induction electrode S41~S4N.With driving electrodes D1 and its corresponding sense
Answer exemplified by electrode S11, when driving electrodes D1 is loaded with drive signal, driving electrodes D1 and induction electrode S11 have different electricity
Position, therefore there is a number of power line therebetween.If the finger of user is constituted close to driving electrodes D1 and induction electrode S11
Unit induction region, the power line between driving electrodes D1 and induction electrode S11 can attract by finger, cause driving electrodes D1 and
Mutual capacity reduction between induction electrode S11.Being connected to the output signal of induction electrode S11 receiver (not illustrating) can react
Go out this mutual tolerance variable quantity.Mutual capacity that the receiver connected according to each induction electrode is provided and send drive signal when
Sequence, subsequent conditioning circuit can determine whether the coordinate of touch points.
The electrode configuration that Fig. 1 is presented has two shortcomings.First, these induction electrodes are connected to the path of corresponding receiver
Length is different.For example, connection induction electrode S11 conductor length is just considerably shorter than connection induction electrode S1N wire
Length.Ideally, the impedance value that each induction electrode is constituted to receiver is preferably equal, will not just cause the signal of input sink
Variation it is too big.Furthermore, time that driving electrodes D1, D2, D3, D4 are loaded with drive signal is different, offset one from another, these senses
It is then to be continuously in the state for receiving signal to answer electrode.Ideally, when driving electrodes D2 is loaded with drive signal, it is possible that mutually
The induction electrode for holding variable quantity should be limited to induction electrode S21~S2N.However, as shown in figure 1, due to connection induction electrode S1N's
The fairly close driving electrodes D2 of wire, the drive signal that driving electrodes D2 is loaded with can most probably be coupled to induction electrode S1N, enter
And cause induction electrode S1N to be also likely to occur a little mutual tolerance variable quantity.This situation will cause subsequent conditioning circuit to judge touch points by accident
Coordinate.
Fig. 2 is another electrode configuration figure of the mutual-capacitive touch panel using single layer electrode structure.As shown in Fig. 2 sense
Answer electrode S11~S1N and S21~S2N to be disposed centrally between driving electrodes D1, D2, and induction electrode S31~S3N and
S41~S4N is disposed centrally between driving electrodes D3, D4.This electrode configuration is advantageous in that, driving electrodes D2 and sensing
Electrode S11~S1N's is distant, therefore its drive signal will not be coupled to induction electrode S11~S1N.On the other hand, due to
Driving electrodes D3 can provide shielding for induction electrode S31~S3N, and therefore induction electrode S31~S3N will not also be driven electrode
The drive signal influence that D2 is loaded with.However, the electrode configuration that Fig. 2 is presented has the problem of linearity is not good.More particularly,
The spacing of each driving electrodes is simultaneously differed, and the unit induction region distribution that these driving electrodes and induction electrode are constituted is also uneven
.Made a variation too big ask in addition, the electrode configuration that Fig. 2 is presented equally exists the impedance value that each induction electrode constitutes to receiver
Topic.
The content of the invention
To solve the above problems, the present invention proposes the new electrode pattern suitable for mutual capacitance type touch control induction device.By
The electrode configuration mode different from prior art is taken, can be avoided because of induced electricity according to the mutual capacitance type touch control induction device of the present invention
The impedance value of pole mismatches the problem of causing, and the linearity it is not good the problem of.In addition, by be each driving electrodes plus shielding
Portion, the probability that point coordinates are touched in subsequent conditioning circuit erroneous judgement can be reduced according to the mutual capacitance type touch control induction device of the present invention.
According to the present invention a specific embodiment be a kind of mutual capacitance type touch control induction device, wherein comprising an induction electrode,
One first driving electrodes and one second driving electrodes.There is the induction electrode electrode trunk, multiple first electrodes to refer to
(electrode finger) and multiple second electrodes refer to.The flat shape of a electrode trunk substantially strip and its long side
It is roughly parallel to a first direction.The plurality of first electrode refers to a respective flat shape substantially rectangle and respectively from the electrode
Trunk extends towards a second direction.The plurality of second electrode refers to a respective flat shape substantially rectangle and certainly should respectively
Electrode trunk extends in contrast to the second direction.The first direction is substantially vertical with the second direction.The first driving electricity
Pole includes one first main body.First main body have with the plurality of first electrode refer to it is corresponding and be staggered it is multiple first recessed
The portion of falling into, one first induction region of composition is referred to the plurality of first electrode.Second driving electrodes include one second main body.This second
Main body has refers to multiple second depressed parts that are corresponding and being staggered with the plurality of second electrode, refers to the plurality of second electrode
Constitute one second induction region.
It is a kind of mutual capacitance type touch control induction device according to the another specific embodiment of the present invention, wherein including an induced electricity
Pole, one first driving electrodes and one second driving electrodes.The induction electrode includes one first sensing section and one second induction zone
Section.First driving electrodes include one first main body, and composition one first induction region corresponding with the first sensing section.Should
Second driving electrodes include one second main body, and composition one second induction region corresponding with the second sensing section.This first
Induction region is with second induction region adjacent to each other and with an adjacent zone.First driving electrodes, which are further included, certainly should
The shielding part that first main body is extended towards the adjacent zone.
It can be further understood on the advantages and spirit of the present invention by following detailed description and accompanying drawings.
Brief description of the drawings
Fig. 1 be prior art in using single layer electrode structure mutual-capacitive touch panel a kind of electrode configuration figure.
Fig. 2 be prior art in using single layer electrode structure mutual-capacitive touch panel another electrode configuration figure.
Fig. 3 A are localizing electrode's configuration diagram of the individual layer mutual capacitance type touch-control system in a specific embodiment of the invention.
Fig. 3 B redraw induction electrode and several driving electrodes in Fig. 3 A, to illustrate the definition of unit induction region.
The result for the multiple electrode combinations as shown in Figure 3A of electrode pattern repeated arrangement that Fig. 3 C are illustrated.
Fig. 3 D illustrate the example for making driving electrodes further include shielding part.
Fig. 3 E are schematically shown as the example that each driving electrodes in the electrode combination shown in Fig. 3 D add connecting wire.
Fig. 3 F illustrate the example that each driving electrodes in another electrode combination for shown in Fig. 3 D add connecting wire.
Fig. 4 A and Fig. 4 B are to present in one embodiment of the invention before increase shielding part and after increase shielding part
Electrode pattern.
Symbol description
S11~S4N, S1~S4：Induction electrode
S1A：Electrode trunk
S1B：Electrode finger
D1~D6：Driving electrodes
U1~U3：Induction region
D1A、D2A：Shielding part
R：Zigzag part
B：Adjacent zone
Embodiment
It is an individual layer mutual capacitance type touch-control system according to the specific embodiment of the present invention, its localizing electrode's configuration diagram is presented in
Fig. 3 A.Electrode marked as S1 is induction electrode, and the electrode marked as D1~D6 is each independent driving electrodes.Such as Fig. 3 A
It is shown, an induction electrode S1 trunk S1A flat shape substantially strip and its long side is substantially parallel to direction Y.Sensing
Electrode S1 also refers to (electrode finger), such as electrode finger S1B comprising multiple electrodes.These flat shapes are substantially rectangular
Electrode finger self-electrode trunk S1A extends towards X-direction or in contrast to X-direction respectively.As shown in Figure 3A, driving electrodes D1
~D6 main body each has multiple depressed parts, refers to corresponding with induction electrode S1 multiple electrodes and interlocks.
In theory, the power line that can be touched influence by user is mainly distributed on driving electrodes and induction electrode is adjacent
Near gaps.Exemplified by redrawing in Fig. 3 B induction electrode S1 and driving electrodes D1, D2, D3, driving electrodes D1 depressed part and
Corresponding electrode finger constitutes the induction region U1 shown with dotted line frame in induction electrode S1, driving electrodes D2 depressed part and
Another induction region U2 of corresponding electrode finger composition in induction electrode S1, and driving electrodes D3 depressed part and induction electrode S1
In corresponding electrode finger constitute another induction region U3.The rest may be inferred, driving each adjacent with induction electrode S1 in Fig. 3 A
Electrode can all respectively correspond to a unit induction region.
It can be seen that by Fig. 3 A, induction electrode S1 left side and the driving electrodes on right side not symmetric arrays in the Y direction.With
Exemplified by driving electrodes D1, D2, D5, a part of electrode finger corresponding to driving electrodes D5 and some corresponding to driving electrodes D1
Position is identical in the X direction for electrode finger, and another part electrode finger corresponding to driving electrodes D5 is with corresponding to driving electrodes D2
A part of electrode finger position is identical in the X direction.Compared to symmetrical arrangement, this way is advantageous in that can promotion feeling
Answer the resolution of result.
The electrode pattern that Fig. 3 C are illustrated is in the multiple electrode combinations as shown in Figure 3A of repeated arrangement in X-direction.To keep
Drawing is clear, and induction electrode S1~S4 as the center of each electrode combination is only indicated in Fig. 3 C.Compare Fig. 3 C and Fig. 1, Fig. 2
Can be seen that, different from prior art with multiple induction electrodes with unification driving electrodes way (such as shown in Fig. 1 to feel
Electrode S11~S1N is answered to coordinate driving electrodes D1), this embodiment is to match somebody with somebody a unification induction electrode with multiple driving electrodes, and will be driven
Moving electrode is divided into the both sides of induction electrode.This way is advantageous in that, configured herein due to these induction electrodes under
Total length is nearly identical, can solve in prior art the problem of caused by the impedance value of induction electrode is mismatched.In addition, phase
Compared with the electrode that edge in prior art is straight line, the multiple electrodes of induction electrode refer to the phase with each driving electrodes in this embodiment
Correspondence depressed part can increase can be touched the power line quantity of influence by user, and then lift mutual tolerance variable quantity, that is, carry
Rise the signal noise ratio of induced signal.Furthermore, as shown in Figure 3 C, the spacing of each induction electrode is quite average, as long as suitably setting
Count the width of driving electrodes and induction electrode, be just not in prior art shown in Fig. 2 the linearity it is not good the problem of.
In another embodiment, as shown in Figure 3 D, each driving electrodes each further includes at least one in addition to main body
Extend in the Y direction from its main body shielding part (with dotted line and its body region every).With driving electrodes D1 shielding part
D1A and driving electrodes D2 shielding part D2A illustrates.As shown in Figure 3 B, induction region U1 and induction region U2 it is adjacent to each other and
With an adjacent zone.Driving electrodes D1 shielding part D1A extends from its electrode body towards the adjacent zone.Relatively,
Driving electrodes D2 shielding part D2A also extends from its electrode body towards the adjacent zone.When driving electrodes D1 is loaded with driving
During signal, shielding part D2A can provide shielding for the induction electrode S1 in induction region U2, it is to avoid the induced electricity in induction region U2
Pole S1 contributes mutual tolerance variable quantity.Similarly, when driving electrodes D2 is loaded with drive signal, shielding part D1A can be induction region U1
Interior induction electrode S1 provides shielding, it is to avoid the induction electrode S1 contribution mutual tolerance variable quantities in induction region U1.Thereby, follow-up electricity
The probability of road erroneous judgement touching point coordinates can be lowered.
Fig. 3 E are schematically shown as the example that each driving electrodes in the electrode combination shown in Fig. 3 D add connecting wire.It is noticeable
It is that in fig. 3e, the main body of driving electrodes D3, D6 is all slightly reduced in the width in X-direction.This way is applied to driving electricity
Pole D3, D6 are adjacent to the situation of the fringe region of whole contact panel, in Fig. 3 E, and fringe region is located at not far below drawing
Place.By the width for suitably reducing some electrodes, the connecting wire of all driving electrodes can be made in the width in neighboring edge region
It is all roughly equal with line-spacing.It thereby can also illustrate, in embodiments in accordance with the present invention, coordinate each drive of same induction electrode
The width of moving electrode need not be equal.Also it can be seen that by Fig. 3 E, the driving electrodes D2 maskable driving electrodes D1 of main body wire can
Influence that can be to induction region U2.Electrode pattern designer can determine these according to shield effectiveness size required in practice
The width of driving electrodes in the X direction.
Fig. 3 F illustrate the example that each driving electrodes in another electrode combination for shown in Fig. 3 D add connecting wire.In this
In embodiment, the overall still substantially induction electrode S1 of strip is slightly tortuous in the scope R shown with dotted line frame.In addition, such as
Shown in Fig. 3 F, the width of the driving electrodes D6 first halves is more than the width of its lower half.The target of these adjustment is all that order is all
Width and line-spacing of the connecting wire of driving electrodes in neighboring edge region are roughly equal.It should be noted that, in each legend of the above
The line width of electrode, line-spacing, Aspect Ratio are all only to illustrate, and scope of the invention is not limited.
Persond having ordinary knowledge in the technical field of the present invention is it is understood that increase shielding part proposed by the present invention is neighbouring
The concept that induction region provides shielding also can be applicable to outside Fig. 3 A other and coordinate multiple driving electrodes with an induction electrode
Mutual capacitance type electrode combination.Fig. 4 A illustrate the electrode pattern not increased before shielding part, Fig. 4 B then present increase shielding part (with dotted line with
Its body region every) after electrode pattern.Induction electrode S1 includes multiple sensing sections for respectively correspond toing driving electrodes D1~D4.
By taking the first driving electrodes D1 in this embodiment and the second driving electrodes D2 as an example, the senses of the first driving electrodes D1 corresponding thereto
Section is answered to constitute the first induction region U1, and the sensing sections of the second driving electrodes D2 corresponding thereto constitute the second induction region
U2.First induction region U1 and the second induction region U2 is adjacent to each other and has in an adjacent zone, substantially Fig. 4 A with dotted line
The region B that frame shows.First driving electrodes D1 is included extends claim one shielding part from its main body towards the adjacent zone
D1A.Shielding part D1A can provide the shield effectiveness for the influence for reducing by the second driving electrodes D2 for the first induction region U1.Relatively,
Second driving electrodes D2 includes the shielding part D2A extended from its main body towards the adjacent zone.Shielding part D2A can be second
Induction region U2 provides the shield effectiveness for the influence for reducing by the first driving electrodes D1.
As described above, the present invention proposes the new electrode pattern suitable for mutual capacitance type touch control induction device.By taking not
The electrode configuration mode of prior art is same as, the resistance because of induction electrode can be avoided according to the mutual capacitance type touch control induction device of the present invention
The problem of anti-value mismatch is caused, and the linearity it is not good the problem of.In addition, adding shielding part, root by for each driving electrodes
The probability of subsequent conditioning circuit erroneous judgement touching point coordinates can be reduced according to the mutual capacitance type touch control induction device of the present invention.
By the above detailed description of preferred embodiments, it would be desirable to more clearly describe the feature and spirit of the present invention, and
Not scope of the invention is any limitation as with above-mentioned disclosed preferred embodiment.On the contrary, the purpose is to wish
Being arranged in the category of the scope of the claims to be applied of the invention for various changes and tool equality can be covered.
Claims (5)
1. a kind of mutual capacitance type touch control induction device, comprising：
One induction electrode, refers to, multiple second electrodes refer to and multiple 3rd electrode fingers with an electrode trunk, multiple first electrodes,
The flat shape of a electrode trunk substantially strip and its long side is roughly parallel to a first direction, the plurality of first electrode
The flat shape of finger is substantially rectangular and extends respectively from the electrode trunk towards a second direction, the plurality of 3rd electrode finger
Flat shape it is substantially rectangular and extend respectively from the electrode trunk towards the second direction, what the plurality of second electrode referred to
Flat shape is substantially rectangular and respectively from the electrode trunk towards extending in contrast to the second direction, and the first direction is with being somebody's turn to do
Second direction is substantially vertical；
One first driving electrodes, comprising one first main body, first main body has to be referred to corresponding and hands over the plurality of first electrode
Wrong multiple first depressed parts, first driving electrodes refer to one first induction region of composition with the plurality of first electrode；
One second driving electrodes, comprising one second main body, second main body has to be referred to corresponding and hands over the plurality of second electrode
Wrong multiple second depressed parts, second driving electrodes refer to one second induction region of composition with the plurality of second electrode；And
One the 3rd driving electrodes, comprising one the 3rd main body, the 3rd main body has corresponding with the plurality of 3rd electrode finger and handed over
Wrong multiple 3rd depressed parts, the 3rd driving electrodes constitute one the 3rd induction region with the plurality of 3rd electrode finger；
Wherein, first induction region is with the 3rd induction region adjacent to each other and with an adjacent zone, and first driving is electric
Extremely further comprising the shielding part extended from first main body towards the adjacent zone.
2. mutual capacitance type touch control induction device as claimed in claim 1, it is characterised in that the plurality of second electrode refer at least one
Part is different in position on the first direction from some that the plurality of first electrode refers to.
3. mutual capacitance type touch control induction device as claimed in claim 1, it is characterised in that first main body is in the second direction
With one first width, the 3rd main body is in having one second width, first width and second width in the second direction
It is different.
4. a kind of mutual capacitance type touch control induction device, comprising：
One induction electrode, includes one first sensing section and one second sensing section；
One first driving electrodes, include one first main body, and composition one first induction region corresponding with the first sensing section；
And
One second driving electrodes, include one second main body, and composition one second induction region corresponding with the second sensing section；
Wherein first induction region and second induction region are adjacent to each other and with an adjacent zone, first driving electrodes
Further comprising one first shielding part extended from first main body towards the adjacent zone.
5. mutual capacitance type touch control induction device as claimed in claim 4, it is characterised in that second driving electrodes are further included
The secondary shielding portion extended from second main body towards the adjacent zone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310205264.6A CN104182102B (en) | 2013-05-28 | 2013-05-28 | mutual capacitance type touch control induction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310205264.6A CN104182102B (en) | 2013-05-28 | 2013-05-28 | mutual capacitance type touch control induction device |
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| CN104182102A CN104182102A (en) | 2014-12-03 |
| CN104182102B true CN104182102B (en) | 2017-10-10 |
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| CN201310205264.6A Expired - Fee Related CN104182102B (en) | 2013-05-28 | 2013-05-28 | mutual capacitance type touch control induction device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106155441B (en) * | 2015-04-27 | 2019-02-05 | 奕力科技股份有限公司 | The induction electrode of single layer multi-point touch-control panel |
| CN105138988B (en) | 2015-08-26 | 2020-02-21 | 京东方科技集团股份有限公司 | Mutual-capacitance type fingerprint identification device, preparation method, display panel and display equipment |
| CN106527782A (en) * | 2015-09-14 | 2017-03-22 | 晨星半导体股份有限公司 | Touch panel |
| TWI588728B (en) * | 2015-12-09 | 2017-06-21 | 晨星半導體股份有限公司 | Mutual capacitive touch sensing device of touch panel |
| CN107665054A (en) * | 2016-07-28 | 2018-02-06 | 京东方科技集团股份有限公司 | Touch screen and preparation method thereof |
| US10310671B2 (en) * | 2017-04-28 | 2019-06-04 | Himax Technologies Limited | Touch sensor device |
| CN113721790B (en) * | 2021-09-03 | 2023-06-27 | 武汉华星光电半导体显示技术有限公司 | Touch display panel and display device |
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| CN101089802A (en) * | 2006-05-31 | 2007-12-19 | 哈拉尔德·菲利普 | Two dimensional position sensor |
| CN103034380A (en) * | 2011-09-30 | 2013-04-10 | 美法思株式会社 | Touch sensing apparatus and method of manufacturing the same |
| CN104169850A (en) * | 2012-01-12 | 2014-11-26 | 辛纳普蒂克斯公司 | Single layer capacitive imaging sensors |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9952737B2 (en) * | 2011-02-24 | 2018-04-24 | Parade Technologies, Ltd. | Single layer touch sensor |
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Patent Citations (3)
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|---|---|---|---|---|
| CN101089802A (en) * | 2006-05-31 | 2007-12-19 | 哈拉尔德·菲利普 | Two dimensional position sensor |
| CN103034380A (en) * | 2011-09-30 | 2013-04-10 | 美法思株式会社 | Touch sensing apparatus and method of manufacturing the same |
| CN104169850A (en) * | 2012-01-12 | 2014-11-26 | 辛纳普蒂克斯公司 | Single layer capacitive imaging sensors |
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