CN203616741U

CN203616741U - Sensing electrode structure

Info

Publication number: CN203616741U
Application number: CN201320842646.5U
Authority: CN
Inventors: 刘子维
Original assignee: MStar Semiconductor Inc Taiwan
Current assignee: MStar Semiconductor Inc Taiwan
Priority date: 2013-12-19
Filing date: 2013-12-19
Publication date: 2014-05-28
Anticipated expiration: 2023-12-19

Abstract

The utility model provides a sensing electrode structure formed on a substrate of a touch control device, which comprises: a first sensing electrode row; a second sensing electrode row parallel to the first sensing electrode row, the second sensing electrode row comprising a plurality of second sensing electrode units; and a guard ring surrounding the second sensing electrode row, the guard ring comprising a plurality of guard electrodes arranged between the plurality of second sensing electrode units.

Description

Sensing electrode structure

Technical field

The utility model is about a kind of sensing electrode structure, especially in regard to a kind of sensing electrode structure with the design of special protection ring.

Background technology

Contact panel is an industry in large scale, and electronic product miscellaneous all uses the important I/O device of contact panel as man-machine interface.The performance of contact panel, depends on sensing electrode and the logical circuit that is 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 is sent can be shown to user through this transparency carrier and watch.The sensing electrode being formed on transparency carrier comprises multiple electrodes, and these electrodes see through multiple wires and are connected to logical circuit.

Particularly the design of modern electronic product is more and more compact, and the thickness of contact panel has determined the thickness of Touch Screen.In addition, multi-point touch also becomes the key factor of man-machine interface.Therefore, can support the contact panel of the projecting type capacitor of individual layer multiple spot, be 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, for the sensed speed of rapid moving object etc. touch-control performance, all need to, in the middle of limited Touch Zone area, clamp-on more electrode and wire.

Due to the limitation of wiring, cause the distance between electrode and electrode unequal.In the time carrying out the calculating of touch-control coordinate, have nonlinear factor and cause error.Accordingly, need a kind of new sensing electrode structure, can reduce the unequal situation of distance between electrode and electrode, and then make the amount convergence of mutual capacitance between electrode and electrode consistent, the non-linear factor while reducing coordinate calculating.

Utility model content

In the middle of an embodiment of the present utility model, a kind of sensing electrode structure of a substrate that is formed at contactor control device is provided, it comprises: one first sensing electrode row; The one second sensing electrode row who is parallel to this first sensing electrode row, this second sensing electrode package is containing multiple the second sensing electrode unit; And a protection ring of arranging around this second sensing electrode, this protection ring comprises the multiple guard electrodes that are arranged between the plurality of the second sensing electrode unit.

Main spirits of the present utility model is protection ring circuit to extend between the second sensing electrode unit of the second sensing electrode row; make the second sensing electrode row's mutual capacitance effect approximate greatly the first sensing electrode row who inserts wire; and then make nonlinear degree reduce, allow the precision of touch-control sensing improve.

Accompanying drawing explanation

Figure 1A is according to the schematic diagram of a sensing electrode structure of the utility model one embodiment.

Figure 1B is according to the schematic diagram of a sensing electrode structure of another embodiment of the utility model.

Fig. 2 is according to the schematic diagram of a sensing electrode structure of another embodiment of the utility model.

Fig. 3 is according to the schematic diagram of a sensing electrode structure of another embodiment of the utility model.

Fig. 4 is according to the schematic diagram of a sensing electrode structure of another embodiment of the utility model.

Fig. 5 is according to the schematic diagram of a sensing electrode structure of another embodiment of the utility model.

Fig. 6 is according to the schematic diagram of a sensing electrode structure of another embodiment of the utility model.

Embodiment

It is as follows that the utility model will be described some embodiment in detail.But except disclosed embodiment, scope of the present utility model is not subject to the restriction of those embodiment, be to be as the criterion with claim thereafter.And for clearer description being provided and making the ordinary person of this skill can understand utility model content of the present utility model, in diagram, each several part is not drawn according to its relative size, the ratio of some size or other scale dependent may be highlighted and the exaggeration that seems, and incoherent detail section is not drawn completely, in the hope of illustrated succinct.

Please refer to shown in Figure 1A, it is according to the schematic diagram of a sensing electrode structure 100 of the utility model one embodiment.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, can be also the some of Touch Screen.This substrate can be opaque, can be also 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 this first sensing electrode row 110 one second sensing electrode row 120, with a protection ring 130 around this second sensing electrode row 120.In the embodiment shown in Figure 1A, this protection ring 130 is also arranged 110 part around the first sensing electrode.

The first sensing electrode row 110 comprises multiple the first sensing electrode unit that are arranged in a row, each first sensing electrode unit comprises one first electrode 111, one second electrode 112, connects one first wire 113 of this first electrode 111, with one second wire 114 that is connected this second electrode 112.The first above-mentioned electrode 111 is with respect 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 utility model does not limit the shape of the first electrode 111 and the second electrode 112, only need to this first electrode 111 with respect to this second electrode 112.

Similarly, the the second sensing electrode row 120 who is parallel to this first sensing electrode row 110 comprises multiple the second sensing electrode unit that are arranged in a row, each second sensing electrode unit comprises a third electrode 121, one the 4th electrode 122, connects a privates 123 of this third electrode 121, with privates 124 that are connected the 4th electrode 122.Above-mentioned third electrode 121 is with respect to the 4th electrode 122.In certain embodiments, this third 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 utility model does not limit the shape of third electrode 121 and the 4th electrode 122, only need to this third electrode 121 with respect to the 4th electrode 122.

The first sensing electrode unit corresponds to a second sensing electrode unit.The privates 123 that the second sensing electrode unit comprises can extend to from corresponding the first side, sensing electrode unit top with privates 124.In other words,, in the middle of the first sensing electrode row 110 above being positioned at, the first electrode 111 and/or second electrode 112 of the first sensing electrode unit can be contiguous to privates 123 and/or privates 124.But because privates 123 and privates 124 extend upward, in the middle of the second sensing electrode row 120 below being positioned at, third electrode 121 and/or the 4th electrode 122 can't be contiguous to other wire.This configuration has caused some extra mutual capacitance effects.In the time that external conductive object comes close to or in contact with the first sensing electrode row's 110 the region that is positioned at top, the mutual capacitance value between the first electrode 111 and/or the second electrode 112 meetings 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 the mutual capacitance value of the third electrode that is connected to 121 and the 4th electrode 122 changed.Total the above, in the time that external conductive object comes close to or in contact with the first sensing electrode row 110 and arranges 120 with the second sensing electrode, the capacity effect occurring can be different, and then produce nonlinear effect.

Therefore, the utility model, between multiple the second sensing electrode unit of the second sensing electrode row 120, is placed multiple guard electrodes 140.In Figure 1A, be connected to

multiple guard electrode

140A, 140B, the 140C etc. of protection ring 130.In the time that external conductive object comes close to or in contact with the second sensing electrode row's 120 region; to have influence on the third electrode 121 and/or the 4th electrode 122 that are adjacent to guard electrode 140, 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 the first sensing electrode row 110 and the second sensing electrode to arrange 120 wiring asymmetric, reduce nonlinear result of calculation.

Please refer to shown in Figure 1B, it is according to the schematic diagram of a sensing electrode structure 100 of another embodiment of the utility model.Compare with Figure 1A, the difference of Figure 1B illustrated embodiment, being has a breach 132 in the middle of the protection ring 130 shown in Figure 1B, makes 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 utility model 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 some embodiment more, 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 according to the schematic diagram of a sensing electrode structure 200 of another embodiment of the utility model.Compare with Figure 1A, difference embodiment illustrated in fig. 2, be the electrode shape of the first sensing electrode unit shown in Fig. 2, electrode shape lucky and this second sensing electrode unit sees through the mutual mapping of an axis (mirror), and the axis of its mapping is approximately the first sensing electrode row 110 and the second sensing electrode row's 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, the second electrodes 212 in third electrode 121.In another embodiment, the electrode shape of the first electrode 211 can mapping in the electrode shape of third electrode 121, the second electrodes 212 can mapping in the 4th electrode 122.That is to say, which electrode which electrode mapping the utility model 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.For example, the electrode shape of the first electrode 211 can mapping can mapping to the four electrodes 122 or third electrode 121 to the electrode shape of third electrode 121 or the 4th electrode 122, the second electrodes 212.From another viewpoint, the electrode shape of the first sensing electrode unit is the electrode shape of the second sensing electrode unit along axis upset just.Otherwise the electrode shape of the second sensing electrode unit is also the electrode shape of the first sensing electrode unit along axis upset.

Please refer to shown in Fig. 3, it is according to the schematic diagram of a sensing electrode structure 300 of another embodiment of the utility model.Compare with Figure 1A, difference embodiment illustrated in fig. 3, be the first electrode 311 shown in Fig. 3, the second electrode 312, third 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 electrodes 140 are still between two the second sensing electrode unit.

Please refer to shown in Fig. 4, it is according to the schematic diagram of a sensing electrode structure 400 of another embodiment of the utility model.Embodiment illustrated in fig. 4 and Figure 1A's is identical, and Fig. 4 is used for illustrating size relationship.In this embodiment, the distance between the first electrode 121 and privates 123 is made as d1, and the distance between the second electrode 122 and privates 124 is d1 too.And distance between adjacent privates 123 and privates 124 is assumed to be d2.

In the middle of the embodiment shown in Fig. 4, the distance of guard electrode 140 Edge Distance third electrodes 121 and the 4th electrode 122 is same is all d1.Thus, can guarantee that its mutual capacitance effect is by roughly the same, eliminated to the full extent the first sensing electrode row 110 and 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 made as d2, with the design of convenient configuration.In the middle of some embodiment, can make apart from d1 and equal d2.In other words, the distance of privates 123 and the first electrode 111, third electrode 121 and the distance of nearest guard electrode 140, with the width of guard electrode 140 be all identical.

Please refer to shown in Fig. 5, its be the utility model 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, comprises one first electrode row 110 and one second electrode row 120.And sensing electrode structure 500 more comprises a third electrode row 530 and one the 4th electrode row 540.Third electrode row 530 comprises multiple the 3rd sensing electrode unit, and the 4th electrode row 540 comprises multiple the 4th sensing electrode unit.Each the 3rd sensing electrode unit corresponds to a 4th sensing electrode unit.

In one embodiment, third electrode row 530 structure can correspond to the second electrode row 120, and the 4th electrode row's 540 structure can mapping arrange 110 to the first electrode.The wire of third 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 the 4th side, sensing electrode unit.As previously mentioned, the utility model does not limit the corresponding situation that the first electrode row 110 arranges each electrodes in 120 with the second electrode, therefore the utility model does not limit the corresponding situations that third electrode row 530 arranges each electrode in 540 with the 4th electrode yet.

In the embodiment shown in fig. 5, protection ring 130 is arranged between 130 between the second electrode row 120 and third electrode, and around third electrode row 130.This protection ring 130 is also arranged 540 part around the 4th sensing electrode.Be deep between each the second sensing electrode unit of the second electrode row 120 generally as

multiple guard electrode

140A, 140B, 140C,

multiple guard electrode

140X, 140Y, 140Z are deep into too third electrode 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 be the utility model 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 opposite direction.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 be connected to this Article 2 protection ring 630.

Those having ordinary skill in the art will appreciate that, various descriptions or the feature of aforementioned Figure 1A to Fig. 4 can be applied on 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 utility model; be protection ring circuit to extend between the second sensing electrode unit of the second sensing electrode row; make the second sensing electrode row's mutual capacitance effect approximate greatly the first sensing electrode row who inserts wire; and then make nonlinear degree reduce, allow the precision of touch-control sensing improve.

The foregoing is only preferred embodiment of the present utility model, not in order to limit claim of the present utility model; All other changes or modifies for departing from the equivalence completing under the spirit that discloses of the utility model, all should be included in following claim.

Claims

1. A sensing electrode structure formed on a substrate of a touch device, comprising:

the first sensing electrode row;

a second sensing electrode row parallel to the first sensing electrode row, which includes a plurality of second sensing electrode units; and

A guard ring surrounding the second sensing electrode row, the guard ring includes a plurality of guard electrodes arranged between the plurality of second sensing electrode units.

2. The sensing electrode structure according to claim 1, wherein the guard ring includes two unconnected first guard rings and second guard rings, and the plurality of guard electrodes are connected to the first guard rings respectively. One of the protection ring and the second protection ring.

3. The sensing electrode structure according to claim 1, wherein the first sensing electrode row includes a plurality of first sensing electrode units, and each of the first sensing electrode units corresponds to one of the first sensing electrode units. Two sensing electrode units.

4. The sensing electrode structure according to claim 3, wherein the electrode shape of the first sensing electrode unit is the same as that of the corresponding second sensing electrode unit.

5 . The sensing electrode structure according to claim 3 , wherein the electrode shape of the first sensing electrode unit corresponds to the corresponding electrode shape of the second sensing electrode unit.

6. The sensing electrode structure according to claim 3, wherein the first sensing electrode unit includes a first electrode and a second electrode corresponding to the first electrode, and the first electrode includes more than one A triangular-like electrode, the second electrode includes a triangular-like electrode opposite to the triangular-like electrode of the first electrode, wherein the above-mentioned second sensing electrode unit includes a third electrode and a fourth electrode corresponding to the third electrode, the The third electrode includes more than one triangular-like electrode, and the fourth electrode includes a triangular-like electrode opposite to the triangular-like circuit of the third electrode.

7. The sensing electrode structure according to claim 6, wherein the second sensing electrode unit further comprises a third wire connected to the third electrode, and the distance between the third wire and the first electrode is The distance between the third electrode and the closest guard electrode is substantially equal.

8. The sensing electrode structure according to claim 6, wherein the second sensing electrode unit further comprises a third wire connected to the third electrode contained therein, and the adjacent second sensing electrode unit The measuring electrode unit further includes a fourth wire connected to the fourth electrode contained therein, and the distance between the third wire and the fourth wire is substantially equal to the width of the guard electrode closest to the third electrode.

9. The sensing electrode structure according to claim 6, wherein the second sensing electrode unit further comprises a third wire connected to the third electrode contained therein, and the adjacent second sensing electrode unit The measuring electrode unit further includes a fourth wire connected to the fourth electrode contained therein, and the following three distances are substantially equal:

the distance between the third lead and the first electrode;

the distance between the third electrode and the nearest guard electrode; and

The width of the guard electrode closest to the third electrode.

10. The sensing electrode structure according to claim 1, wherein the widths of the plurality of guard electrodes are different from the width of the guard ring.

11. The sensing electrode structure according to claim 1, further comprising:

a third sensing electrode row parallel to the first sensing electrode row, which includes a plurality of third sensing electrode units; and

a fourth sensing electrode row parallel to the first sensing electrode row,

Wherein the guard ring surrounds the third sensing electrode row, and the guard ring includes a plurality of guard electrodes arranged between the third sensing electrode units.

12. The sensing electrode structure according to claim 1, further comprising:

a third sensing electrode row parallel to the first sensing electrode row, which includes a plurality of third sensing electrode units;

a fourth sensing electrode row parallel to the first sensing electrode row; and

The second guard ring surrounds the third sensing electrode row, and the second guard ring includes a plurality of guard electrodes arranged between the third sensing electrode units.