CN203102243U - Coupling electrode group, touchpad and touch display device - Google Patents
Coupling electrode group, touchpad and touch display device Download PDFInfo
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- CN203102243U CN203102243U CN 201320093506 CN201320093506U CN203102243U CN 203102243 U CN203102243 U CN 203102243U CN 201320093506 CN201320093506 CN 201320093506 CN 201320093506 U CN201320093506 U CN 201320093506U CN 203102243 U CN203102243 U CN 203102243U
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Abstract
The utility model provides a coupling electrode group, a touchpad and a touch display device. The coupling electrode group comprises a drive electrode and an induction electrode, wherein the drive electrode is provided with at least one first drive portion, the induction electrode is provided with at least one first induction portion, and a coupling capacitor is formed between the first drive portion and the first induction portion. At least one second drive portion is extended from the first drive portion, and an included angle which is larger than 0 degree and smaller or equal to 90 degrees is formed between the second drive portion and the first drive portion. At least one second induction portion is extended from the first induction portion, and an included angle which is larger than 0 degree and smaller or equal to 90 degrees is arranged between the second induction portion and the first induction portion. According to the coupling electrode group, a coupling capacitor is also formed between the second drive portion and the second induction portion. Capacity variation caused when the coupling electrode is touched is improved so that utilization of the touchpad of the coupling electrode group can effectively improve touch sensitivity.
Description
Technical field
The utility model relates to the touch-control field, particularly a kind of coupling electrode group, Trackpad and touch control display apparatus.
Background technology
The projected capacitive Trackpad can be divided into two types of self-capacitance touch-control and mutual capacitance Trackpads.
Usually, the self-capacitance Trackpad detects respectively laterally and longitudinal electrode array ground capacitance when touching detection successively.According to changes in capacitance before and after touching, determine lateral coordinates and along slope coordinate respectively, be combined into the touch coordinate on plane then.The scan mode of self-capacitance is equivalent to the touch point that touches on the Trackpad is projected to X-axis and Y direction respectively, calculates coordinate in X-axis and Y direction respectively then, is combined into the coordinate of touch point at last.If single-point touches, then the projection in X-axis and Y direction all is unique, and the coordinate that is combined into also is unique; If touch have on the Trackpad 2 touch and these 2 then two projections are arranged respectively not in same directions X or same Y direction at X and Y direction, then be combined into 4 coordinates.Obviously, it is real having only two coordinates, and two other is exactly what be commonly called as " terrible point ".Therefore, the self-capacitance Trackpad can't be realized real multiple point touching.
The difference of mutual capacitance Trackpad self-capacitance Trackpad is that what it detected is changes in capacitance between the electrode.When finger touch arrives capacitance touch control board, influenced the coupling between near two electrodes in touch point, thereby changed the electric capacity between these two electrodes.Usually, when detecting the mutual capacitance size, drive electrode sends pumping signal successively, and all induction electrodes are received signal simultaneously, can obtain the capacitance size of all drivings and induction electrode joint like this, the capacitance size of the two dimensional surface of promptly whole touch Trackpad.According to touching Trackpad two dimension capacitance change data, can calculate the coordinate of each touch point.Therefore, even a plurality of touch points are arranged on the Trackpad, also can calculate the true coordinate of each touch point.
Please refer to Fig. 1, Fig. 1 is existing mutual capacitance type touch control plate.This Trackpad includes a plurality of coupling electrode groups, and each coupling electrode group comprises a drive electrode 110 and an induction electrode 120, and Fig. 1 shows four coupling electrode groups wherein.Except the coupling electrode group, Trackpad 100 also comprises drive electrode cabling 111 that is electrically connected with drive electrode 110 and the induction electrode cabling 121 that is electrically connected with induction electrode 120, and they are used for drive electrode 110 and induction electrode 120 are electrically connected to the touch control controller (not shown).Trackpad 100 included drive electrode 110, electrode cabling 111, induction electrode 120 and induction electrode cablings 121 are made in substrate 130 surfaces.In each coupling electrode group, the formation coupling capacitance intercouples between drive electrode 110 and the induction electrode 120, when for example finger touch is between drive electrode 110 and induction electrode 120, cause the variation of coupling capacitance, form corresponding touching signals after the processing through touch control controller, this touching signals makes related device (for example display) make corresponding reaction.
But existing mutual capacitance type touch control plate exists the low shortcoming of signal to noise ratio (S/N ratio).Thereby Granted publication number proposes a kind of by reducing the method that noise improves mutual capacitance type touch control plate signal to noise ratio (S/N ratio) for the Chinese patent of CN202600673.But, still can't make the mutual capacitance type touch control plate reach higher signal to noise ratio (S/N ratio) by reducing noise merely.
Thereby, need badly and propose a kind of new coupling electrode group, to solve the existing low problem of Trackpad signal to noise ratio (S/N ratio).
The utility model content
The technical problems to be solved in the utility model is to propose a kind of coupling electrode group, Trackpad and touch control display apparatus, so that adopt the Trackpad of this coupling electrode group can have higher touch-control sensitivity, has improved the signal to noise ratio (S/N ratio) of Trackpad.
For addressing the above problem, coupling electrode group provided by the utility model comprises:
At least one drive electrode, described drive electrode have at least one first drive division;
At least one induction electrode, described induction electrode have at least one first induction part;
Form coupling capacitance between described first drive division and described first induction part;
Described first drive division extends at least one second drive division, and described second drive division and described first drive division are greater than 0 ° and are less than or equal to 90 ° angle;
Described first induction part extends at least one second induction part, and described second induction part and described first induction part are greater than 0 ° and are less than or equal to 90 ° angle;
Form coupling capacitance between described second drive division and described second induction part.
Optionally, described first drive division is vertical with described second drive division; Described first induction part is vertical with second induction part.
Optionally, described first drive division is parallel with described first induction part.
Optionally, described drive electrode is a plurality of, and described induction electrode is one, and described first induction part is a plurality of.
Optionally, described induction electrode also comprises trunk, a plurality of described first induction parts of the vertical connection of described trunk.
Optionally, described drive electrode also comprises from extended the 3rd drive division of described second drive division, and described the 3rd drive division and described second drive division are greater than 0 ° and are less than or equal to 90 ° angle;
Described induction electrode also comprises from extended the 3rd induction part of described second induction part, and described second induction part and described the 3rd induction part are greater than 0 ° and are less than or equal to 90 ° angle;
Form coupling capacitance between described the 3rd drive division and described the 3rd induction part.
Optionally, described drive electrode and described induction electrode are positioned at same plane.
Optionally, described drive electrode and described induction electrode are made by same material.
Optionally, described material comprises one or more of indium tin oxide, indium zinc oxide and aluminum zinc oxide.
For addressing the above problem, the utility model also provides a kind of Trackpad, comprising:
Substrate;
Be formed at least one the aforesaid coupling electrode group on the described substrate;
The drive electrode cabling is electrically connected with described drive electrode;
The induction electrode cabling is electrically connected with described induction electrode.
Optionally, described coupling electrode group, described drive electrode cabling and described induction electrode cabling are positioned at the same surface of described substrate.
Optionally, described coupling electrode group is a plurality of, and described drive electrode cabling or described induction electrode cabling are arranged between the described coupling electrode group.
Optionally, described drive electrode cabling and described induction electrode cabling and described drive electrode and described induction electrode are made by same material.
For addressing the above problem, the utility model also provides a kind of touch control display apparatus, comprising:
Aforesaid Trackpad;
Touch control controller is connected with described Trackpad, is used to send, receive and handle the touching signals on the described Trackpad;
Display is connected with described touch control controller, is used for carrying out correspondence according to described touching signals and shows.
Compared with prior art, technical solutions of the utility model have the following advantages:
In the coupling electrode group provided by the utility model, drive electrode not only comprises first drive division, comprise that also induction electrode not only comprises first induction part from extended second drive division of first drive division, also comprise from extended second induction part of first induction part.Thereby, except first drive division can form the coupling capacitance with the coupling of second drive division, second drive division and described second induction part formation coupling capacitance that also can be coupled, increased the coupling capacitance between drive electrode and the induction electrode, improve the capacitance change that can cause when this coupling electrode winding is touched, thereby can effectively improve the touch-control sensitivity of the Trackpad that adopts this coupling electrode group.
In the possibility of coupling electrode group provided by the utility model, in second drive division, extend the 3rd drive division, extend the 3rd induction part at second induction part, and the 3rd drive division and the 3rd induction part formation coupling capacitance that also is coupled, further increased the coupling capacitance between drive electrode and the induction electrode, improve the capacitance change that can cause when this coupling electrode winding is touched, thereby can effectively improve the touch-control sensitivity of the Trackpad that adopts this coupling electrode group.
In the possibility of coupling electrode group provided by the utility model, take the layout of an induction electrode and a plurality of drive electrode coupling, being provided with trunk in this single induction electrode links together each several part, this structure has promptly been saved the laying of induction electrode cabling, again the coupled structures that are used to detect mutual capacitance can be set more on equal area, thereby can improve the touch-control degree of accuracy.
Description of drawings
Fig. 1 is the utility model embodiment one coupling electrode group synoptic diagram;
Fig. 2 is the synoptic diagram of the utility model coupling electrode group first embodiment;
Fig. 3 is the synoptic diagram of the utility model coupling electrode group second embodiment;
Fig. 4 is the synoptic diagram of the utility model coupling electrode group the 3rd embodiment;
Fig. 5 is the synoptic diagram of the utility model coupling electrode group the 4th embodiment;
The Trackpad embodiment synoptic diagram that Fig. 6 provides for the utility model;
The touch control display apparatus embodiment synoptic diagram that Fig. 7 provides for the utility model.
Embodiment
As stated in the Background Art, existing Trackpad signal to noise ratio (S/N ratio) is low, thereby needs to improve the signal to noise ratio (S/N ratio) of Trackpad.The utility model proposes the coupling electrode group, it comprises at least one drive electrode for this reason, and described drive electrode has at least one first drive division; At least one induction electrode, described induction electrode have at least one first induction part; Form coupling capacitance between described first drive division and described first induction part; The more important thing is that it comprises that also described second drive division and described first drive division be not on same straight line from extended at least one second drive division of described first drive division; From extended at least one second induction part of described first induction part, described second induction part and described first induction part be not on same straight line; And also form coupling capacitance between described second drive division and described second induction part.Because second drive division and described second induction part participate in forming coupling capacitance, improved the capacitance change that can cause when touching.And capacitance change is proportional to touching signals intensity (be that capacitance change is big more, detected signal is strong more), thereby, adopt the Trackpad of this coupling electrode group can effectively improve touch-control sensitivity.
Below will be with specific embodiment, and in conjunction with annex map, the technical solution of the utility model is elaborated.
Please refer to Fig. 2, Fig. 2 is the synoptic diagram of the utility model coupling electrode group first embodiment, and two drive electrodes (not label) and two induction electrodes (not label) that show among Fig. 2 have formed two groups of coupling electrode groups.Though drive electrode is not carried out label, as can be seen from Figure 2, each described drive electrode has one first drive division 211 and (extended from first drive division, 211 upsides) three second drive divisions 212.Same, though induction electrode is not carried out label, as can be seen from Figure 2, each described induction electrode has one first induction part 221 and (extended from first induction part, 221 downsides) three second induction parts 222.In the present embodiment, first drive division 211 and first induction part 221 are equivalent to induction electrode 110 and the drive electrode 120 in the background technology, the formation coupling capacitance intercouples between first drive division 211 and first induction part 221, this coupling capacitance can change when for example receiving finger touch, thereby can judge touch action.What is more important in the present embodiment, exists second drive division 212 and 212 meetings of second induction part, 222, the second drive divisions and second induction part, 222 formation coupling capacitances.The formation coupling capacitance owing to also intercouple between second drive division 212 and second induction part 222, increased the coupling capacitance between drive electrode and the induction electrode, improve this coupling electrode group and received the capacitance change that can cause when touching, thereby the touch-control sensitivity that can effectively improve the Trackpad that adopts this coupling electrode group, improved the signal to noise ratio (S/N ratio) of touching signals in the Trackpad.
The mechanism that coupling capacitance increases in the present embodiment is as described below: as can be seen from Figure 2, exist between first drive division 211 and first induction part 221 over against the edge, be somebody's turn to do the thickness that have vertical plane shown in Figure 2 over against the edge, thereby constitute over against area over against edge and this vertical thickness by this.Simultaneously, they itself all are to be made by conductive material, they over against existing insulating medium (for example space, that is etching groove) between the area, the insulating medium between them can be regarded as the insulating material of vacuum, atmosphere or filling.First drive division 211 is become plane-parallel capacitor with the equivalence of first induction part 221, according to the capacity of parallel plate capacitor formula can obtain between them over against coupling capacitance C
1=ε
1S
1/ d
1(ε
1Be the specific inductive capacity between first drive division 211 and first induction part 221, S
1Be to have over against area d between first drive division 211 and first induction part 221
1Be the distance between first drive division 211 and first induction part 221).Need benly to be, between first drive division 211 and first induction part 221 except existence over against coupling capacitance C
1Outside, also exist bigger edge coupling capacitance C
1'.This is because in first drive division 211 and first induction part, the 221 formed equivalent parallel plate capacitors, first drive division 211 and first induction part 221 can form this edge coupling capacitance C on plane shown in Figure 2
1' (edge coupling capacitance C
1' the formation principle be: some zone was straight line reluctantly in the middle of plane-parallel capacitor had only, electric field line bending more outward severe more.During to the electric capacity edge, the electric field line bending is the most severe, this electric field line buckling phenomenon is exactly edge effect, the electric capacity of edge effect part is edge capacitance, in present embodiment coupling electrode group, be the respective edges coupling capacitance), and first drive division 211 and the area of first induction part 221 on plane shown in Figure 2 than they between many greatly, thereby this edge coupling capacitance C over against area
1' will be much larger than over against coupling capacitance C
1What is more important, for first drive division 211 and first induction part 221, touch operation such as finger touch can't change over against coupling capacitance C
1, but can change edge coupling capacitance C
1', thereby this edge coupling capacitance C
1' be only the electric capacity that is used for senses touch operation.According to above-mentioned identical principle, second drive division 212 and second induction part 222 form over against coupling capacitance C
2=ε
2S
2/ d
2(ε
2Be the specific inductive capacity between second drive division 212 and second induction part 222, S
2Be to have over against area d between second drive division 212 and second induction part 222
2Be the distance between second drive division 212 and second induction part 222).And there are bigger edge coupling capacitance C in second drive division 212 and second induction part 222
2', according to above-mentioned identical principle, this edge coupling capacitance C
2' be only the electric capacity that is used for senses touch operation.Like this, in the present embodiment, the coupling total capacitance C=C between drive electrode and the induction electrode
1+ C
1'+C
2+ C
2', the C of increase
2And C
2' make coupling total capacitance C increase, and the edge coupling capacitance C that increases
2' can be used for the senses touch operation, make the signal to noise ratio (S/N ratio) of coupling electrode group improve.In addition, also coupling capacitance can be produced between first drive division 211 and second induction part 222 in the present embodiment, also coupling capacitance can be produced, its principle and C between first induction part 221 and second drive division 212
1, C
1', C
2And C
2' the formation principle identical, do not repeat them here.
In the present embodiment, described second drive division 222 and described first drive division 211 be not on same straight line.Equally, described second induction part 221 and described first induction part 222 be not on same straight line.In fact, in the present embodiment, described first drive division 211 can be greater than 0 ° with described second drive division 212 and be less than or equal to any angle of 90 °, as: 5 °, 30 °, 45 °, 60 ° or 90 °.Described first induction part 221 can be greater than 0 ° with described second induction part 222 and be less than or equal to any angle of 90 °, as: 5 °, 30 °, 45 °, 60 ° or 90 °.
In the present embodiment, first drive division 211 and first induction part 221 are parallel to each other, and second drive division 212 is parallel with second induction part 222, helps increasing the coupling total capacitance between drive electrode and the induction electrode in this case.But in other embodiments, first drive division 211 also can be not parallel with first induction part 221, and second drive division 212 also can be not parallel with second induction part 222.
In the present embodiment, exist insulating medium (space for example between first drive division 211 and first induction part 221, that is etching groove), distance between them (that is width of etched trench) is more than or equal to 0.03mm, on the basis of this precision, the width range of described second drive division 212 and described second induction part 222 can be preferably 0.3mm～0.8mm, and the length range of described second drive division 212 and described second induction part 222 can be preferably 1.5mm～2.5mm.And described second drive division 212 spacing each other is preferably more than or equals 0.03mm, and described second induction part 222 spacing each other is preferably more than or equals 0.03mm.
Need to prove that in the present embodiment, the number of second drive division 212 and second induction part 222 is three, length, width and the bearing of trend of each second drive division 212 and each second induction part 222 are all identical.But in other embodiment of the present utility model, the individual number average of second drive division 212 and second induction part 222 can for one, more than two or three.And length, width and the bearing of trend of each second drive division 212 and each second induction part 222 can be inequality.
In the present embodiment, described drive electrode and described induction electrode can preferably be made by same material.For example, they can be by forming at grade with a kind of transparent conductive material sputter, and etching forms again.And preferred, they are produced on same plane, then by etching direct drive electrode and the induction electrode that forms as shown in Figure 2 of etched trench (being above-mentioned insulating medium) between them.Make described drive electrode and described induction electrode can be saved manufacturing process with same material, save cost.And the manufacturing materials of described drive electrode and described induction electrode can be preferably in indium tin oxide (ITO), indium zinc oxide and the aluminum zinc oxide one or more, and in the present embodiment, their manufacturing materials is ITO.
Comprise two drive electrodes and two induction electrodes shown in Fig. 2 in the present embodiment, but, in other embodiment of the present utility model, the number of drive electrode and induction electrode does not limit, can be provided with as required, for example can be the coupling of a drive electrode and a plurality of induction electrode, also can be the coupling of an induction electrode and a plurality of drive electrode, and this instructions is not given unnecessary details one by one to this.
In the present embodiment two induction electrodes respectively with two coupled structures of formation (i.e. two groups of coupling electrode groups) of two drive electrodes couplings, can be used for the detection of 2 touch-controls, but, in other embodiment of the present utility model, also can be a plurality of induction electrodes respectively with a plurality of coupled structures of formation of a plurality of drive electrodes coupling, can be used for the detection of multi-point touch, thereby apply in the multipoint touch plate.
Need to prove, though do not illustrate, but in the present embodiment, described drive electrode can also comprise from described second drive division, 212 extended the 3rd drive divisions, and described the 3rd drive division and described second drive division 212 be not on same straight line, and promptly described the 3rd drive division can be greater than 0 ° with second drive division and be less than or equal to any angle of 90 °.Simultaneously, described induction electrode can also comprise from described second induction part, 222 extended the 3rd induction parts, and described second induction part 222 and described the 3rd induction part be not on same straight line, and promptly described the 3rd induction part can be greater than 0 ° with described the 3rd induction part 222 and be less than or equal to any angle of 90 °.The 3rd drive division and induction electrode form coupling capacitance, form coupling capacitance between the 3rd induction part and the drive electrode, so just further increased the coupling capacitance between drive electrode and the induction electrode, improve the capacitance change that can cause when this coupling electrode winding is touched, thereby can effectively improve the touch-control sensitivity of the Trackpad that adopts this coupling electrode group.
Please refer to Fig. 3, Fig. 3 is the synoptic diagram of the utility model coupling electrode group second embodiment, the coupling electrode group that coupling electrode group that present embodiment provided and embodiment one are provided has something in common, the content of something in common please refer to the description among the embodiment one, and present embodiment is illustrated the difference between them emphatically.
In the present embodiment, as shown in Figure 3, first drive division 311 of drive electrode (not label) is parallel to each other with first induction part 321 of induction electrode (not label), and simultaneously, second drive division 312 of drive electrode is parallel with second induction part 322 of induction electrode.And first drive division 311 is " one " font, the upper and lower sides of second drive division, 312 vertical first drive division, 311 " one " fonts.First induction part 321 is " Contraband " type, and second induction part, 322 vertical first induction parts 321 are inboard following on " Contraband " type, thereby in the present embodiment, each electrode structure is symmetry more, is the engagement shape.Like this, than embodiment one, the coupling electrode group of present embodiment can effectively utilize the space more, the coupled structures that are used to detect mutual capacitance can be set on equal area more, thereby can improve the touch-control degree of accuracy, simultaneously, can make that also the coupling capacitance of each coupling electrode group is bigger.
Please refer to Fig. 4, Fig. 4 is the synoptic diagram of the utility model coupling electrode group the 3rd embodiment, the coupling electrode group that coupling electrode group that present embodiment provided and embodiment two are provided has something in common, the content of something in common please refer to the description among the embodiment two, and present embodiment only is illustrated the difference between them.
In the present embodiment, described coupling electrode group comprises four described drive electrodes (not label) and a described induction electrode (not label), wherein: each described drive electrode comprises one first drive division 411, each described induction electrode has only comprised among four described first induction part 421(Fig. 4 label two first induction electrode portions 421 wherein).Need to prove, in other embodiment of the present utility model, can in a coupling electrode group, only be provided with under the situation of an induction electrode (this induction electrode has one or more first induction electrode portion 411), the number of drive electrode in not limiting can be provided with a plurality of drive electrodes according to actual needs.And a drive electrode can include only one first drive division 411, also can comprise two or more first drive divisions 411.Wherein, when induction electrode and drive electrode all only had one, this coupling electrode group can apply to the single-point touch plate.
Please continue with reference to figure 4, in the present embodiment, described induction electrode also comprises trunk 423, four described first induction parts 421 of these trunk 423 vertical connections.Like this, just each first induction part 421 is connected to become an induction electrode, and trunk 423 can be regarded the part of whole induction electrode as, and trunk 423 also can coupling take place with drive electrode and form coupling capacitance, makes the coupling capacitance of each coupled structure increase.Among Fig. 4, described first drive division 411 and 421 couplings of described first induction part.But, in other embodiment of the present utility model, also can be described first drive division 411 and 421 couplings of two described first induction parts, perhaps two described first drive divisions 411 and 421 couplings of described first induction part.In the coupling electrode group that is provided in the present embodiment, take the layout of an induction electrode and a plurality of drive electrode coupling, being provided with trunk 423 in this single induction electrode is vertically connected on a plurality of first induction parts 421 together, this structure has promptly been saved the laying of follow-up induction electrode cabling, again the coupled structures that are used to detect mutual capacitance can be set more on equal area, thereby can improve the touch-control degree of accuracy.
Please refer to Fig. 5, Fig. 5 is the synoptic diagram of the utility model coupling electrode group the 4th embodiment, the coupling electrode group that coupling electrode group that present embodiment provided and embodiment three are provided has something in common, the content of something in common please refer to the description among the embodiment three, and present embodiment only is illustrated the difference between them.
In the present embodiment, all vertically be connected with four first induction parts 521 in induction electrode (not label) trunk 523 both sides, and one first drive division, 511 couplings of two first induction parts 521 and drive electrode (not label).And each first drive division 511 vertically extends three second drive divisions 512, and each first induction part 521 vertically extends three second induction parts 522 again.Like this, the coupling electrode group of present embodiment can make full use of an induction electrode and come and a plurality of drive electrode couplings, make that the space availability ratio of coupling electrode group is higher, and the laying of further having saved follow-up induction electrode cabling, the coupled structures that are used to detect mutual capacitance can be set on equal area more, thereby can improve the touch-control degree of accuracy.
Please refer to Fig. 6, the Trackpad embodiment synoptic diagram that Fig. 6 provides for the utility model, present embodiment provides a kind of Trackpad 600, this Trackpad 600 comprises substrate 630 and the coupling electrode group that is formed on the described substrate 630, described coupling electrode group can be any one coupling electrode group among the utility model coupling electrode group first to fourth embodiment, but, present embodiment is that example is illustrated with the coupling electrode group that is different from above-mentioned coupling electrode group embodiment, but the structure of this coupling electrode group and character can reference example one to four in corresponding contents.
Concrete, show that for convenient present embodiment is directly represented the various piece of drive electrode and induction electrode with thick black line.In the present embodiment, described drive electrode is label not, but can it comprise first drive division 611 and second drive division 612 as seen from Figure 6.Same, described induction electrode is label not, but can it comprise first induction part 621 and second induction part 622 as seen from Figure 6.Simultaneously, the present embodiment induction electrode also comprises trunk 623, trunk 623 vertical each first induction part 621 that connect, the induction electrode of an integral body of formation.
In the present embodiment, first drive division respectively extends among five second drive division 612(Fig. 6 only to one of them second drive division, 612 label both sides about in the of 611), first induction part 621 then comprises two kinds of situations, a kind of for extending among five second induction part 622(Fig. 6 equally only to one of them second induction part, 622 label along its upside), another kind of for to extend five second induction parts 622 along its downside.And one on the other two group of second induction part 622 with along extended ten second drive divisions, 612 couplings of same first drive division, 611 upper and lower sides.
In the present embodiment, first drive division respectively extends five second drive divisions 612 in both sides about in the of 611, first induction part 621 extends five second induction parts 622 simultaneously, second drive division 612 and second induction part 622 of this extension number can produce stronger coupling capacitance, each coupling electrode group is compacted regularly in the Trackpad 600 that forms, and has good space availability ratio.
In the present embodiment, described Trackpad 600 also comprises drive electrode cabling 614 that is electrically connected with described drive electrode and the induction electrode cabling 624 that is electrically connected with described induction electrode.Present embodiment is preferred, and described coupling electrode group, described drive electrode cabling 614 and described induction electrode cabling 624 are positioned at the same surface of described substrate 630.Further preferred, described drive electrode cabling 614 and induction electrode cabling 624 are made by same material with described drive electrode and described induction electrode.Like this, in manufacturing process, can utilize same material to be formed at substrate 630 surfaces after, form corresponding driving electrode, induction electrode, drive electrode cabling 614 and induction electrode cabling 624 by a step etching again.
Please continue with reference to figure 6, in the present embodiment, form two described coupling electrode groups on the described substrate 630, described drive electrode cabling 614 is arranged between the described coupling electrode group.Need to prove, in other embodiment of the present utility model, one group of coupling electrode group also can be set or organize the coupling electrode group more.The utility model does not limit the number of coupling electrode group, and simultaneously, also not limiting is that described drive electrode cabling 614 is arranged between the described coupling electrode group, also can be that described induction electrode cabling 624 is arranged between the described coupling electrode group.Simultaneously, just as described above in Example, it is also unrestricted that each organizes in the coupling electrode group number of drive electrode and induction electrode, and corresponding contents can be with reference to the content of coupling electrode group first to fourth embodiment.
Trackpad that present embodiment provided 600 is owing to form big coupling capacitance between drive electrode and the induction electrode in the coupling electrode group, thereby can make that the touch-control sensitivity of Trackpad is higher, and bigger touching signals signal to noise ratio (S/N ratio) is provided.In fact, present embodiment provides in the Trackpad, and the coupling length of side of induction electrode and drive electrode can be increased to 54.1mm by original 16mm between each coupling electrode group.And the coupling length of side of drive electrode and induction electrode can equivalence be the parallel capacitance plate over against area, by the derivation of equation among the embodiment one as can be known, electric capacity in the present embodiment between induction electrode and the drive electrode is existing more than three times of Trackpad, therefrom as can be known, the contact panel that present embodiment provided can be brought up to touch-control sensitivity existing more than three times of Trackpad.
Please refer to Fig. 7, the touch control display apparatus embodiment synoptic diagram that Fig. 7 provides for the utility model, present embodiment provides a kind of touch control display apparatus 700, this touch control display apparatus 700 comprises Trackpad 701, Fig. 7 omits each structure on the Trackpad 701, and corresponding contents can be with reference to Trackpad shown in Figure 6 600.Each coupling electrode group of this Trackpad 701 can be electrically connected with flexible printed circuit board (FPC) 703 by corresponding driving electrode cabling and induction electrode cabling, and is connected to touch control controller 702 by flexible printed circuit board 703.This touch control controller 702 is used to send, receive and handle the touching signals on the described Trackpad 701.This touch control display apparatus 700 also comprises display 704, and this display 704 is connected with touch control controller 702, is used for making corresponding the demonstration according to touching signals.This display 704 can be a LCD, organic light emitting diode display or plasma scope etc.
The touch control display apparatus 700 that present embodiment provided has Trackpad 701, the coupling electrode group that has big coupling capacitance on the Trackpad 701, thereby this Trackpad 701 has high touch-control sensitivity, this coupling electrode group can provide the touching signals of high s/n ratio, and then this touch control display apparatus 700 can be made the touch operation that receives and show reaction accurately.
Though the utility model with preferred embodiment openly as above; but it is not to be used for limiting the utility model; any those skilled in the art are not in breaking away from spirit and scope of the present utility model; can make possible change and modification, therefore protection domain of the present utility model should be as the criterion with the scope that the utility model claim is defined.
Claims (14)
1. a coupling electrode group is characterized in that, comprising:
At least one drive electrode, described drive electrode have at least one first drive division;
At least one induction electrode, described induction electrode have at least one first induction part;
Form coupling capacitance between described first drive division and described first induction part;
It is characterized in that,
Described first drive division extends at least one second drive division, and described second drive division and described first drive division are greater than 0 ° and are less than or equal to 90 ° angle;
Described first induction part extends at least one second induction part, and described second induction part and described first induction part are greater than 0 ° and are less than or equal to 90 ° angle;
Form coupling capacitance between described second drive division and described second induction part.
2. coupling electrode group as claimed in claim 1 is characterized in that, described first drive division is vertical with described second drive division; Described first induction part is vertical with second induction part.
3. coupling electrode group as claimed in claim 1 or 2 is characterized in that, described first drive division is parallel with described first induction part.
4. coupling electrode group as claimed in claim 3 is characterized in that, described drive electrode is a plurality of, and described induction electrode is one, and described first induction part is a plurality of.
5. coupling electrode group as claimed in claim 1 is characterized in that described induction electrode also comprises trunk, a plurality of described first induction parts of the vertical connection of described trunk.
6. coupling electrode group as claimed in claim 1 is characterized in that:
Described drive electrode also comprises from extended the 3rd drive division of described second drive division, and described the 3rd drive division and described second drive division are greater than 0 ° and are less than or equal to 90 ° angle;
Described induction electrode also comprises from extended the 3rd induction part of described second induction part, and described second induction part and described the 3rd induction part are greater than 0 ° and are less than or equal to 90 ° angle;
Form coupling capacitance between described the 3rd drive division and described the 3rd induction part.
7. coupling electrode group as claimed in claim 1 is characterized in that, described drive electrode and described induction electrode are positioned at same plane.
8. coupling electrode group as claimed in claim 1 is characterized in that, described drive electrode and described induction electrode are made by same material.
9. coupling electrode group as claimed in claim 8 is characterized in that described material comprises one or more of indium tin oxide, indium zinc oxide and aluminum zinc oxide.
10. a Trackpad is characterized in that, comprising:
Substrate;
Be formed on the described substrate at least one as any described coupling electrode group of claim 1 to 9;
The drive electrode cabling is electrically connected with described drive electrode;
The induction electrode cabling is electrically connected with described induction electrode.
11. Trackpad as claimed in claim 10 is characterized in that, described coupling electrode group, described drive electrode cabling and described induction electrode cabling are positioned at the same surface of described substrate.
12. Trackpad as claimed in claim 11 is characterized in that, described coupling electrode group is a plurality of, and described drive electrode cabling or described induction electrode cabling are arranged between the described coupling electrode group.
13. Trackpad as claimed in claim 10 is characterized in that, described drive electrode cabling, described induction electrode cabling, described drive electrode and described induction electrode are made by same material.
14. a touch control display apparatus is characterized in that, comprising:
As any described Trackpad of claim 10 to 13;
Touch control controller is connected with described Trackpad, is used to send, receive and handle the touching signals on the described Trackpad;
Display is connected with described touch control controller, is used for carrying out correspondence according to described touching signals and shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320093506 CN203102243U (en) | 2013-02-28 | 2013-02-28 | Coupling electrode group, touchpad and touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320093506 CN203102243U (en) | 2013-02-28 | 2013-02-28 | Coupling electrode group, touchpad and touch display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203102243U true CN203102243U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320093506 Expired - Lifetime CN203102243U (en) | 2013-02-28 | 2013-02-28 | Coupling electrode group, touchpad and touch display device |
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| Country | Link |
|---|---|
| CN (1) | CN203102243U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108897459A (en) * | 2018-08-31 | 2018-11-27 | 深圳和而泰智能控制股份有限公司 | The touch detecting method of touch screen touches capacitor, touch screen and electronic equipment |
| CN109933240A (en) * | 2019-03-15 | 2019-06-25 | 合肥鑫晟光电科技有限公司 | A kind of touch module and display device |
-
2013
- 2013-02-28 CN CN 201320093506 patent/CN203102243U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108897459A (en) * | 2018-08-31 | 2018-11-27 | 深圳和而泰智能控制股份有限公司 | The touch detecting method of touch screen touches capacitor, touch screen and electronic equipment |
| CN108897459B (en) * | 2018-08-31 | 2024-01-23 | 深圳和而泰智能控制股份有限公司 | Touch detection method of touch screen, touch capacitance, touch screen and electronic device |
| CN109933240A (en) * | 2019-03-15 | 2019-06-25 | 合肥鑫晟光电科技有限公司 | A kind of touch module and display device |
| CN109933240B (en) * | 2019-03-15 | 2022-07-08 | 合肥鑫晟光电科技有限公司 | Touch module and display device |
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Address after: 200233, 15, Guiping Road, 418, Shanghai, Xuhui District Patentee after: SHANGHAI AWINIC TECHNOLOGY Co.,Ltd. Address before: 200233, 15, Guiping Road, 418, Shanghai, Xuhui District Patentee before: SHANGHAI AWINIC TECHNOLOGY Co.,Ltd. |
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