CN104731419A - Sensing electrode structure - Google Patents
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- CN104731419A CN104731419A CN201310704098.4A CN201310704098A CN104731419A CN 104731419 A CN104731419 A CN 104731419A CN 201310704098 A CN201310704098 A CN 201310704098A CN 104731419 A CN104731419 A CN 104731419A
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Abstract
The invention provides a sensing electrode structure formed on a substrate on a touch device. the sensing electrode structure comprises a first sensing electrode row, a second sensing electrode row and a protective ring, wherein the second sensing electrode row is parallel to the first sensing electrode row and comprises a plurality of second sensing electrode units, and the protective ring encircles the second sensing electrode row and comprises a plurality of protective electrodes which are arranged among the plurality of second sensing electrodes.
Description
Technical field
The present invention about a kind of sensing electrode structure, especially in regard to a kind of sensing electrode structure with special protection ring design.
Background technology
Contact panel is an industry in large scale, and electronic product miscellaneous all uses contact panel as the important I/O device of man-machine interface.The performance of contact panel, depends on sensing electrode and the logical circuit being connected sensing electrode.The design of sensing electrode and quality, can have influence on the performance of contact panel.
In general, the sensing electrode of contact panel is formed on a transparency carrier.The light that display device sends can be shown to user's viewing through this transparency carrier.The sensing electrode formed on the transparent substrate comprises multiple electrode, and these electrodes are connected to logical circuit through multiple wire.
Particularly the design of modern electronic product is more and more compact, and the thickness of contact panel determines the thickness of Touch Screen.In addition, multi-point touch also becomes the key factor of man-machine interface.Therefore, it is possible to support the contact panel of the projecting type capacitor of individual layer multiple spot, it is the contact panel form that current minority can meet above demand.
Because the resolution of display device constantly improves, user for the performance requirement of contact panel also along with lifting.The resolution of contactor control device, accuracy, sensed speed etc. touch-control performance for rapid moving object, all need, in the middle of limited Touch Zone area, to clamp-on more electrode and wire.
Due to the limitation of wiring, cause the distance between electrode and electrode unequal.When carrying out touch-control coordinate and calculating, have nonlinear factor and cause error.Accordingly, need a kind of new sensing electrode structure, the unequal situation of distance between electrode and electrode can be reduced, and then make the amount convergence of mutual capacitance between electrode with electrode consistent, reduce non-linear factor when coordinate calculates.
Summary of the invention
In the middle of one embodiment of the invention, provide a kind of sensing electrode structure of the substrate being formed at contactor control device, it comprises: one first sensing electrode row; Be parallel to the one second sensing electrode row of this first sensing electrode row, this second sensing electrode package is containing multiple second sensing electrode unit; And around the protection ring that this second sensing electrode is arranged, this protection ring comprises the multiple guard electrodes be arranged between the plurality of second sensing electrode unit.
Main spirits of the present invention is protection ring circuit to extend between the second sensing electrode unit of the second sensing electrode row; make the mutual capacitance effect of the second sensing electrode row approximate greatly the first sensing electrode inserting wire to arrange; and then make nonlinear degree reduce, allow the precision of touch-control sensing improve.
Accompanying drawing explanation
Figure 1A is the schematic diagram of a sensing electrode structure according to an embodiment of the invention.
Figure 1B is the schematic diagram of a sensing electrode structure according to another embodiment of the present invention.
Fig. 2 is the schematic diagram of a sensing electrode structure according to another embodiment of the present invention.
Fig. 3 is the schematic diagram of a sensing electrode structure according to another embodiment of the present invention.
Fig. 4 is the schematic diagram of a sensing electrode structure according to another embodiment of the present invention.
Fig. 5 is the schematic diagram of a sensing electrode structure according to another embodiment of the present invention.
Fig. 6 is the schematic diagram of a sensing electrode structure according to another embodiment of the present invention.
Embodiment
It is as follows that the present invention will describe some embodiments in detail.But except disclosed embodiment, scope of the present invention by the restriction of those embodiments, is not be as the criterion with claim thereafter.And in order to provide clearer description and make the ordinary person of this skill can understand summary of the invention of the present invention, in diagram, each several part is not drawn according to its relative size, the ratio of some size or other scale dependent may be seemed by highlighting exaggeration, and incoherent detail section is not drawn completely, in the hope of succinctly illustrated.
Please refer to shown in Figure 1A, it is the schematic diagram of a sensing electrode structure 100 according to an embodiment of the invention.This sensing electrode structure 100 can be formed at a substrate of a contactor control device.This contactor control device can be the some of Trackpad, also can be the some of Touch Screen.This substrate can be opaque, also can be transparent.In certain embodiments, this contactor control device can be the Touch Screen of embedded (In-Cell).In other embodiments, this contactor control device can be the Touch Screen of lattice above formula (On-Cell).
This sensing electrode structure 100 comprises one first sensing electrode row 110, is parallel to the one second sensing electrode row 120 of this first sensing electrode row 110, with the protection ring 130 arranging 120 around this second sensing electrode.In the embodiment shown in Figure 1A, this protection ring 130 is also around the part of the first sensing electrode row 110.
First sensing electrode row 110 comprises the multiple first sensing electrode unit be arranged in a row, each first sensing electrode unit comprises one first electrode 111,1 second electrode 112, connects one first wire 113 of this first electrode 111, with one second wire 114 being connected this second electrode 112.The first above-mentioned electrode 111 is relative to this second electrode 112.In certain embodiments, this first electrode 111 comprises the leg-of-mutton electrode of class.Here the class triangle of indication can comprise triangle, trapezoidal and polygon.The general field personnel of this area are appreciated that, the present invention does not limit the shape of the first electrode 111 and the second electrode 112, only needs this first electrode 111 relative to this second electrode 112.
Similarly, the the second sensing electrode row being parallel to this first sensing electrode row 110 120 comprises the multiple second sensing electrode unit be arranged in a row, each second sensing electrode unit comprises one the 3rd electrode 121, the 4th electrode 122, connects a privates 123 of the 3rd electrode 121, with the privates 124 being connected the 4th electrode 122.The 3rd above-mentioned electrode 121 is relative to the 4th electrode 122.In certain embodiments, the 3rd electrode 121 comprises the leg-of-mutton electrode of class.Here the class triangle of indication can comprise triangle, trapezoidal and polygon.The general field personnel of this area are appreciated that, the present invention does not limit the shape of the 3rd electrode 121 and the 4th electrode 122, only need the 3rd electrode 121 relative to the 4th electrode 122.
First sensing electrode unit corresponds to a second sensing electrode unit.The privates 123 that second sensing electrode unit comprises can extend to top to privates 124 from the first corresponding sensing electrode unit side.In other words, in the middle of the first sensing electrode row 110 above being positioned at, the first electrode 111 of the first sensing electrode unit and/or the second electrode 112 can be contiguous to privates 123 and/or privates 124.But because privates 123 and privates 124 extend upward, be positioned in the middle of the second sensing electrode row 120 of below, the 3rd electrode 121 and/or the 4th electrode 122 can't be contiguous to other wire.This configuration causes some extra mutual capacitance effects.When external conducting object comes close to or in contact with the region of the first sensing electrode row 110 being positioned at top, the mutual capacitance value between the first electrode 111 and/or the second electrode 112 meeting and privates 123 and/or privates 124 can change.In other words, the controller of contactor control device can think privates 123 and privates 123 be connected to the 3rd electrode 121 and the 4th electrode 122 mutual capacitance value change.Described on total, when external conducting object comes close to or in contact with the first sensing electrode row 110 and the second sensing electrode arranges 120 time, the capacity effect occurred can be different, and then produce nonlinear effect.
Therefore, the present invention, between multiple second sensing electrode unit of the second sensing electrode row 120, places multiple guard electrode 140.Namely multiple guard electrode 140A of protection ring 130,140B, 140C etc. are connected in figure ia.When external conducting object comes close to or in contact with the region of the second sensing electrode row 120; to the 3rd electrode 121 and/or the 4th electrode 122 that are adjacent to guard electrode 140 be had influence on, cause and be positioned at top the first sensing electrode arrange 110 similar mutual capacitance effects.Its effect can make the controller of contactor control device can preferably eliminate first sensing electrode row 110 and second sensing electrode arrange 120 wiring asymmetric, reduce nonlinear result of calculation.
Please refer to shown in Figure 1B, it is the schematic diagram of a sensing electrode structure 100 according to another embodiment of the present invention.Compare with Figure 1A, the difference of Figure 1B illustrated embodiment, be there is a breach 132 in the middle of the protection ring 130 shown in Figure 1B, make protection ring be divided into one first protection ring 130A and one second protection ring 130B.Each above-mentioned guard electrode 140 is connected to the first protection ring 130A or one second protection ring 130B.The present invention does not limit the position of breach 132.In certain some embodiment, the plurality of guard electrode 140 will all be connected to the first protection ring 130A.In further embodiments, the plurality of guard electrode 140 will all be connected to the second protection ring 130B.In more some embodiments, the part of the plurality of guard electrode 140 is connected to the first protection ring 130A, and remaining part is connected to the second protection ring 130B.
Please refer to shown in Fig. 2, it is the schematic diagram of a sensing electrode structure 200 according to another embodiment of the present invention.Compare with Figure 1A, difference embodiment illustrated in fig. 2, be the electrode shape of the first sensing electrode unit shown in Fig. 2, just with the electrode shape of this second sensing electrode unit through the mutual mapping of an axis (mirror), the axis of its mapping be approximately the first sensing electrode arrange 110 and second sensing electrode arrange 120 separator bar.
In embodiment shown in Fig. 2, the electrode shape mapping of the first electrode 211 is in the electrode shape mapping of the 4th electrode 122, second electrode 212 in the 3rd electrode 121.In another embodiment, the first electrode 211 electrode shape can mapping in the 3rd electrode 121, second electrode 212 electrode shape can mapping in the 4th electrode 122.That is, which electrode which electrode mapping the present invention do not limit in, only needs the electrode shape of the first sensing electrode unit to set each other off in the electrode shape of the second sensing electrode unit.Such as, the first electrode 211 electrode shape can mapping to the 3rd electrode 121 or the 4th electrode 122, second electrode 212 electrode shape can mapping to the 4th electrode 122 or the 3rd electrode 121.From another viewpoint, the electrode shape of the first sensing electrode unit is the electrode shape that the second sensing electrode unit overturns along axis just.Otherwise the electrode shape of the second sensing electrode unit is also the electrode shape that the first sensing electrode unit overturns along axis.
Please refer to shown in Fig. 3, it is the schematic diagram of a sensing electrode structure 300 according to another embodiment of the present invention.Compare with Figure 1A, difference embodiment illustrated in fig. 3, be the first electrode 311, second electrode 312 shown in Fig. 3, the 3rd electrode 321, with each self-contained two the class triangles of the 4th electrode 322.In another embodiment, each electrode of the first sensing electrode unit and the second sensing electrode unit can comprise multiple class triangular-shaped electrodes.And multiple guard electrode 140 is still between two the second sensing electrode unit.
Please refer to shown in Fig. 4, it is the schematic diagram of a sensing electrode structure 400 according to another embodiment of the present invention.Identical with Figure 1A embodiment illustrated in fig. 4, Fig. 4 is for illustration of size relationship.In this embodiment, the distance between the first electrode 121 and privates 123 is set to d1, and the distance between the second electrode 122 and privates 124 is d1 too.And the distance between adjacent privates 123 and privates 124 is assumed to be d2.
In the middle of the embodiment shown in Fig. 4, guard electrode 140 Edge Distance the 3rd electrode 121 is same with the distance of the 4th electrode 122 is all d1.Thus, can guarantee that its mutual capacitance effect is by roughly the same, eliminate to the full extent first sensing electrode row 110 from the second sensing electrode arrange 120 different.
Embodiment as shown in Figure 4, the distance between adjacent privates 123 and privates 124 is assumed to be d2, and the width of corresponding guard electrode 140 also can be set to d2, with the design of convenient configuration.In the middle of some embodiment, distance d1 can be made to equal d2.In other words, the distance of privates 123 and the first electrode 111, the 3rd electrode 121 are all identical with the distance of nearest guard electrode 140, with the width of guard electrode 140.
Please refer to shown in Fig. 5, its for the present invention more an embodiment the schematic diagram of a sensing electrode structure 500.The first half of sensing electrode structure 500 is identical with the sensing electrode structure 100 shown in Figure 1A, comprise one first electrode row 110 and one second electrode arrange 120.And sensing electrode structure 500 more comprises one the 3rd electrode row 530 and one the 4th electrode arranges 540.3rd electrode row 530 comprises multiple 3rd sensing electrode unit, and the 4th electrode row 540 comprises multiple 4th sensing electrode unit.Each the 3rd sensing electrode unit corresponds to a 4th sensing electrode unit.
In one embodiment, the structure of the 3rd electrode row 530 can correspond to the second electrode row 120, and the structure of the 4th electrode row 540 mapping can arrange 110 to the first electrode.The wire of the 3rd electrode row 530 each electrodes, through the 4th electrode row 540, is picked out by below.That is the wire of the 3rd sensing electrode unit extends to below by corresponding 4th sensing electrode unit side.As previously mentioned, the present invention does not limit the corresponding situation that the first electrode row 110 and the second electrode arranges each electrodes in 120, therefore the present invention does not limit the 3rd electrode yet arranges 530 and arrange the corresponding situation of 540 each electrodes interior with the 4th electrode.
In the embodiment shown in fig. 5, protection ring 130 is arranged between 130 between the second electrode row 120 and the 3rd electrode, and around the 3rd electrode row 130.This protection ring 130 is also around the part of the 4th sensing electrode row 540.As general between each the second sensing electrode unit that multiple guard electrode 140A, 140B, 140C are deep into the second electrode row 120, multiple guard electrode 140X, 140Y, 140Z are deep into the 3rd electrode too and arrange between each the 3rd sensing electrode unit of 530.These newly-increased multiple guard electrode 140X, 140Y, 140Z are connected to this protection ring 130 equally.
Please refer to shown in Fig. 6, its for the present invention more an embodiment the schematic diagram of a sensing electrode structure 600.The first half of sensing electrode structure 600 is identical with the sensing electrode structure 100 shown in Figure 1A.And the Lower Half of sensing electrode structure 600 is identical with the sensing electrode structure 100 shown in Figure 1A, only direction is contrary.Compared with the sensing electrode structure 500 shown in Fig. 5, the sensing electrode structure 600 shown in Fig. 6 has had more the Article 2 protection ring 630 around the 3rd sensing electrode row.Because protection ring 130 and Article 2 protection ring 630 separate completely, so aforesaid multiple guard electrode 140X, 140Y, 140Z change into and are connected to this Article 2 protection ring 630.
Those having ordinary skill in the art will appreciate that, the various description of aforementioned Figure 1A to Fig. 4 or feature can be applied in the embodiment shown in Fig. 5 and Fig. 6, therefore do not add detailed description at this.
As mentioned above; one of main spirits of the present invention; between the second sensing electrode unit being protection ring circuit to extend to the second sensing electrode row; make the mutual capacitance effect of the second sensing electrode row approximate greatly the first sensing electrode inserting wire to arrange; and then make nonlinear degree reduce, allow the precision of touch-control sensing improve.
The foregoing is only preferred embodiment of the present invention, and be not used to limit claim of the present invention; All other changes for the equivalence completed under the disclosed spirit of disengaging or modifies, and all should be included in following claim.
Claims (12)
1. a sensing electrode structure, is formed at the substrate of contactor control device, comprises:
First sensing electrode row;
Be parallel to the second sensing electrode row of this first sensing electrode row, it comprises multiple second sensing electrode unit; And
Around the protection ring of this second sensing electrode row, this protection ring comprises the multiple guard electrodes be arranged between the plurality of second sensing electrode unit.
2. sensing electrode structure as claimed in claim 1, it is characterized in that, above-mentioned protection ring comprises two the first protection rings and the second protection ring that are not connected, the plurality of guard electrode be connected to respectively this first protection ring and this second protection ring one of them.
3. sensing electrode structure as claimed in claim 1, is characterized in that, the first above-mentioned sensing electrode package is containing multiple first sensing electrode unit, and each this first sensing electrode unit corresponds to this second sensing electrode unit.
4. sensing electrode structure as claimed in claim 3, it is characterized in that, the electrode shape of the first above-mentioned sensing electrode unit is identical with the electrode shape of this corresponding the second sensing electrode unit.
5. sensing electrode structure as claimed in claim 3, is characterized in that, the electrode shape of the first above-mentioned sensing electrode unit and the mutual mapping of electrode shape of this corresponding the second sensing electrode unit.
6. sensing electrode structure as claimed in claim 3, it is characterized in that, the first above-mentioned sensing electrode unit comprises the first electrode and the second electrode corresponding to this first electrode, this first electrode comprises more than one class triangular-shaped electrodes, this second electrode comprises the class triangular-shaped electrodes relative with the class triangular-shaped electrodes of this first electrode, the second wherein above-mentioned sensing electrode unit comprises the 3rd electrode and corresponds to this three electrode 4th electrode, 3rd electrode comprises more than one class triangular-shaped electrodes, 4th electrode comprises the class triangular-shaped electrodes relative with this three electrode class delta circuit.
7. sensing electrode structure as claimed in claim 6; it is characterized in that; the second above-mentioned sensing electrode unit more comprises and is connected to this three electrode privates, and this privates is equal with the distance essence of this nearest guard electrode with the 3rd electrode with the distance of this first electrode.
8. sensing electrode structure as claimed in claim 6; it is characterized in that; the second above-mentioned sensing electrode unit more comprises this three electrode privates being connected to it and comprising; this adjacent the second sensing electrode unit more comprises the privates being connected to the 4th electrode that it comprises, and this privates is equal with the width essence of this guard electrode nearest apart from the 3rd electrode with the distance of these privates.
9. sensing electrode structure as claimed in claim 6, it is characterized in that, the second above-mentioned sensing electrode unit more comprises this three electrode privates being connected to it and comprising, this adjacent the second sensing electrode unit more comprises the privates being connected to the 4th electrode that it comprises, and three following distance essence are equal:
The distance of this privates and this first electrode;
The distance of the 3rd electrode and this nearest guard electrode; And
The width of this guard electrode nearest apart from the 3rd electrode.
10. sensing electrode structure as claimed in claim 1, it is characterized in that, the width of above-mentioned multiple guard electrodes is different from the width of this protection ring.
11. sensing electrode structures as claimed in claim 1, is characterized in that, more comprise:
Be parallel to the 3rd sensing electrode row of this first sensing electrode row, it comprises multiple 3rd sensing electrode unit; And
Be parallel to the 4th sensing electrode row of this first sensing electrode row,
Wherein above-mentioned protection ring is arranged around the 3rd sensing electrode, and this protection ring comprises the multiple guard electrodes be arranged between the plurality of 3rd sensing electrode unit.
12. sensing electrode structures as claimed in claim 1, is characterized in that, more comprise:
Be parallel to the 3rd sensing electrode row of this first sensing electrode row, it comprises multiple 3rd sensing electrode unit;
Be parallel to the 4th sensing electrode row of this first sensing electrode row; And
Around the Article 2 protection ring of the 3rd sensing electrode row, and this Article 2 protection ring comprises the multiple guard electrodes be arranged between the plurality of 3rd sensing electrode unit.
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| CN201310704098.4A CN104731419B (en) | 2013-12-19 | 2013-12-19 | Sensing electrode structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105117055A (en) * | 2015-08-14 | 2015-12-02 | 宸鸿科技(厦门)有限公司 | Touch pressed type three-dimensional signal input device, application method and multi-functional touch control panel |
| CN108919994A (en) * | 2018-06-22 | 2018-11-30 | 圆尚科技（深圳）有限公司 | Condenser type control point sensing device and method |
| CN114385039A (en) * | 2020-10-16 | 2022-04-22 | 宸鸿科技(厦门)有限公司 | Electronic device with touch function and touch sensing method |
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| CN102375593A (en) * | 2010-08-25 | 2012-03-14 | 毅齐科技股份有限公司 | Structure and method for impedance adjustment of touch panel |
| US20130207934A1 (en) * | 2010-10-21 | 2013-08-15 | Atlab Inc. | Input device and touch position detecting method thereof |
| CN203616741U (en) * | 2013-12-19 | 2014-05-28 | 晨星半导体股份有限公司 | Sensing electrode structure |
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2013
- 2013-12-19 CN CN201310704098.4A patent/CN104731419B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102375593A (en) * | 2010-08-25 | 2012-03-14 | 毅齐科技股份有限公司 | Structure and method for impedance adjustment of touch panel |
| US20130207934A1 (en) * | 2010-10-21 | 2013-08-15 | Atlab Inc. | Input device and touch position detecting method thereof |
| CN203616741U (en) * | 2013-12-19 | 2014-05-28 | 晨星半导体股份有限公司 | Sensing electrode structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105117055A (en) * | 2015-08-14 | 2015-12-02 | 宸鸿科技(厦门)有限公司 | Touch pressed type three-dimensional signal input device, application method and multi-functional touch control panel |
| CN105117055B (en) * | 2015-08-14 | 2018-09-28 | 宸鸿科技(厦门)有限公司 | Press-type three dimensional signal input unit and application method and Multifunctional touch panel |
| CN108919994A (en) * | 2018-06-22 | 2018-11-30 | 圆尚科技（深圳）有限公司 | Condenser type control point sensing device and method |
| CN114385039A (en) * | 2020-10-16 | 2022-04-22 | 宸鸿科技(厦门)有限公司 | Electronic device with touch function and touch sensing method |
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