CN102707823B - Touch control sensor - Google Patents
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- CN102707823B CN102707823B CN201110084856.8A CN201110084856A CN102707823B CN 102707823 B CN102707823 B CN 102707823B CN 201110084856 A CN201110084856 A CN 201110084856A CN 102707823 B CN102707823 B CN 102707823B
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Abstract
The present invention relates to a kind of touch control sensor, by the electrode of sensing touch-control with wire coiling to circuit board, cover wire and shielded shielding sheet, also the conductor layer of available circuit plate forms shielding sheet and couples place with what shield each electrode and wire.Coupling the wire between two homogeneous electrode, also extensible to be a shielding sheet couple place with what shield another kind of electrode.In the periphery of sensing electrode, an auxiliary electrode can be set to compensate the edge effect of sensing electrode.
Description
Technical field
The relevant a kind of touch control sensor of the present invention, espespecially a kind of to shield sheet and/or auxiliary electrode reduction touch control sensor cost and to promote the capacitance type touch control sensor of touch-control degree of accuracy.
Background technology
Touch Screen is combined with the touch-control sensing function of touch control sensor and the display function of display floater, can provide control interface friendly, intuition for user, have become as one of most popular man-computer interface of modern society.Cost as how relatively low realizes performance preferably touch control sensor/Touch Screen, also becomes the Research Emphasis of modern information manufacturer.
Summary of the invention
The present invention provides a kind of touch control sensor, includes the shielding sheet of multiple electrode, multiple wire and a conduction.Each distribution of electrodes in a plane, at least part of sensing region being arranged in this plane of each electrode.Each wire then couples one or more electrode, the electrode coupled coiling to be conducted to outside sensing region.Shielding sheet then electrically isolates from each wire；This shielding sheet is located at outside sensing region to cover part or all of each wire, make shielding sheet in this plane be projected in sensing region outside, and have part overlap or overlap completely with the projection in plane of at least one wire.This shielding sheet can intersect sideline around sensing region along the two of sensing region (or multiple), to shield each wire round sensing region coiling.
The electrode of touch control sensor is usually realized by different conductors from wire, and the former may be disposed at transparent tin indium oxide (indiumtinoxide, an ITO) conductor layer, and the latter is then standing is placed in elargol layer.Owing to the place of coupling between the two (namely routing place) relates to the connection of two kinds of heterogeneous conductors, therefore what consolidate couples to need suitable area to guarantee.But, this place of coupling also can form equivalent capacity and couple unexpected capacitance change mistakenly.Therefore, the present invention also discloses various solution and is shielded.In addition, for promoting the resolution of position of touch, the electrode that the present invention can adopt two kinds of (or more kinds of) shapes different senses, difform electrode is staggered in the x-direction, and the identical electrode of two (or more) shapes can be coupled to same group, after grouping, react a total capacitance variable quantity.In order to simplify the required conductor layer used of grouping and shielding, the present invention may utilize the existing two-layer conductor layer of circuit board and realizes wire and shielding sheet/grouping respectively.
The present invention also provides a kind of touch control sensor, and it is provided with multiple electrode, multiple first wire, multiple second wire and shielding sheet.Each first wire is coupled to an electrode, and correspondence first wire of each two (or more) one species/same shape electrode is then coupled together group in addition with one second wire.The part of each first wire is arranged at a conductor layer of circuit board, and each second wire is then arranged at another conductor layer of same circuit board with shielding sheet.
The present invention also provides a kind of touch control sensor, the second electrode that it has the first identical electrode of multiple shape, multiple shape is identical, multiple first wire and multiple second wires.Each first electrode and the second electrode are staggered along the x direction of sensing region, make each first electrode be adjacent to one second electrode in the x-direction, and each second electrode is adjacent to one first electrode in the x-direction.Two (or more) first electrode is coupled together group in addition by each first wire, and two (or more) second electrode group is then integrated by each second wire.Each first wire may be disposed at elargol layer, and each second wire, each first electrode and the second electrode are then arranged at same indium tin oxide conductor layer.The insulation of this indium tin oxide conductor layer and elargol layer, and each first wire to may be extended to be a shielding sheet so that it is plane projection can and the plane projection part of at least one second wire overlap or overlap completely, namely shield the second wire with the first wire.In one embodiment, each first electrode of present invention sectional dimension in the x-direction is that the first end by each first electrode is cumulative to the second end, and each first wire is exactly the first electrode being coupled to each correspondence at the second end.When user position of touch is moved towards the second end by the first end of each first electrode, the capacitance change that each first electrode is coupled to namely can be cumulative and increase along with sectional dimension；In this case, even if user position of touch convergence or cross the second end of the first electrode and make the first wire being coupled in the second end be also coupled to capacitance change, still correctly maintained cumulative trend by the capacitance change of each first electrode reaction, be not result in position of touch coordinate and analyze mistake.In another embodiment, each first wire and the second wire are all arranged at same tin indium oxide conductor layer with each first electrode, each second electrode, to simplify the conductor layer needed for grouping.
The present invention also provides a kind of touch control sensor, and it has multiple sensing electrode and an auxiliary electrode.Auxiliary electrode is located at outside this sensing region, with each sensing electrode insulation but be also arranged at same conductor layer with each sensing electrode, with compensate sensing electrode edge effect.Wherein, respectively sense electrode interval one predeterminable range in the x-direction and arrange, and the interval, x direction respectively sensing electrode and auxiliary electrode can be equal to this predeterminable range.For being arranged in most edge, sensing electrode closest to sensing region sideline, owing to suffered edge effect is comparatively serious, therefore the interval, x direction of itself and auxiliary electrode can be equal to this predeterminable range, auxiliary electrode equivalence is enable to become another sensing electrode to compensate the edge effect of edge sensing electrode.
In order to the above-mentioned and other aspect of the present invention is had understanding more preferably, preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below:
Accompanying drawing explanation
Fig. 1 and Fig. 2 illustrates that a kind of embodiment of touch control sensor.
Fig. 3 and Fig. 4 illustrates that a kind of embodiment of touch control sensor of the present invention.
Fig. 5 illustrates that the derivative embodiment of one of touch control sensor of the present invention.
Fig. 6 illustrates that the another kind of embodiment of touch control sensor.
Fig. 7 and Fig. 8 illustrates that another embodiment of touch control sensor of the present invention.
Fig. 9 and Figure 10 illustrates that the another embodiment of touch control sensor of the present invention.
Figure 11 to Figure 14 illustrates the different embodiments of touch control sensor of the present invention respectively.
Main element symbol description
10,10 ', 20,20 ', 30,30a-30b, 40,50,60 touch control sensor
U, D electrode
FC auxiliary electrode
Lu, Ld, Lu1-Lu3, Ld1-Ld3, Lc wire
Po output place
SA sensing region
TP, TP ' position of touch
SD, SD1-SD2 shield sheet
SLT space
Jc wire jumper place
Bd, Bu routing place
ITO1, Ag1, FPC1, FPC2 conductor layer
SAu, SAd sideline
Wd, wu, w0, w1 width
D0, d1, d1 ' distance
Detailed description of the invention
Capacitance type touch control sensor arranges multiple touch-control sensing electrode in a sensing region and senses because of the capacitance change caused by user touch-control, and analyzes the coordinate of position of touch.In order to make these electrode senses to capacitance change can transmit to circuit board with the form of electronic signal with output to the process circuit (being for example a control wafer) analyzing coordinate, each electrode can with corresponding wire coiling to circuit board.But, the equivalent capacity of these wires also can couple capacitance change mistakenly, causes coordinate mistake in computation.In an embodiment, utilize the shielding sheet of a conduction to cover these wires carrying out coiling around sensing region, to shield unexpected capacitance change.
Refer to Fig. 1 and Fig. 2, this two figure shows a touch control sensor 10 with a plane projection and a schematic perspective view respectively, has multiple electrode U and multiple electrode D, multiple wire Lu and multiple Ld.Each electrode U and D may be disposed at same indium tin oxide conductor layer；This conductor layer can go out an x/y plane by framework, and namely the major part of each electrode U and D is positioned at the sensing region SA on this x/y plane, in order to sense user touch-control in this sensing region SA.When touch control sensor 10 is applied to a Touch Screen, then sensing region SA can be considered a viewing area, and namely the content that Touch Screen to show penetrates this viewing area and present and give user.Each electrode U and D has another fraction to extend to outside sensing region SA respectively, and is respectively coupled to wire Lu and the Ld of correspondence.In the embodiment of Fig. 1 and 2, each wire Lu is coupled to two corresponding electrode U, it is integrated with the two electrode U group, and the total capacitance variable quantity that the two electrode U senses just can outside the form of an electronic signal be conducted to sensing region SA via wire Lu.In like manner, each wire Ld then couples two corresponding electrode D by its grouping, to transmit to sensing region SA with the capacitance change each group reacted.
When analyzing/determine the x coordinate of position of touch, owing to the electrode U and electrode L of each group arrange along x direction, the x coordinate that different groups are just corresponding different respectively.If the capacitance change of the electrode reaction of a certain group is relatively big, just represent the x coordinate of position of touch close to the x coordinate corresponding to this group.Accordingly, so that it may determine the x coordinate of position of touch.
When analyzing the y coordinate of position of touch, x direction sectional dimension (cross-sectional width) of each electrode U can be cumulative and present shape wide at the top and narrow at the bottom along with+y direction, x direction sectional dimension (cross-sectional width) of each electrode D then can along with+y direction be decrescence and in now narrow wide shape, if therefore capacitance change that the capacitance change bigger and each electrode L that senses of each electrode U senses is less, represent the y coordinate top close to sensing region SA of position of touch, accordingly, the y coordinate of position of touch can be calculated.
As shown in Figures 1 and 2, each wire Lu along the left side bearing of sensing region or right side bearing around sensing region SA by the upper sideline SAu of sensing region SA, with coiling to an output place Po, can be coupled to circuit board by output Po.Each wire Ld then by the lower sideline SAd of sensing region SA coiling to output place Po, be coupled to circuit board being unified in output place Po with each wire Lu.Owing to each wire Lu and Ld starts coiling respectively at two sidelines up and down of sensing region SA, therefore can be considered the framework of a kind of both-end outlet.
But, owing to each wire Lu along the right and left wire-wound line of sensing region SA, therefore can be coupled to unexpected capacitance change mistakenly, and then cause the mistake in computation of position of touch.As it is shown in figure 1, when user position of touch TP drops on each wire Lu on the right side of sensing region SA, these wires Lu can couple capacitance change that touch-control causes and be mixed into these wires Lu electronic signal transmitted.When analyzing position of touch, these capacitance changes being mixed into by mistake can be interpreted to the electrode U capacitance change sensed, equivalence similarly is each electrode U on the right side of sensing region SA senses to some extent, therefore the position of touch TP ' calculated accordingly than the actual position of touch TP top closer to sensing region SA, may cause coordinate mistake in computation.
Refer to Fig. 3 and Fig. 4, it illustrates the touch control sensor 20 of the embodiment of the present invention respectively with plane graph and axonometric chart.Touch control sensor 20 is provided with multiple electrode U, multiple electrode L, multiple wire Lu and multiple wire Ld, with the framework of both-end outlet, the electronic signal coiling of grouping electrode is assembled to output place Po, to be coupled to circuit board by output Po, for instance a flexual circuit board.Touch control sensor 20 has additional the shielding sheet SD of a conduction, shielding sheet SD electrically isolates from each wire Lu and Ld, along the left side bearing of sensing region and right side bearing around sensing region SA by the upper sideline SAu of sensing region SA, with each wire Lu around thread path around outside sensing region SA to cover each wire Lu, make the plane projection of shielding sheet SD outside sensing region SA, and have at least part to overlap with the plane projection of each wire Lu.Shielding sheet SD is utilized to shield each wire Lu, to avoid each wire Lu mistake to be coupled to unexpected capacitance change.It is preferred that each wire Lu and Ld may be disposed at an elargol layer, shield sheet SD and be then arranged at another elargol layer, two elargol layer mutually insulated.
Fig. 5 shows touch control sensor 20 ' according to another embodiment of the present invention.In touch control sensor 20 ', the shielding of wire Lu is to be shielded sheet SD1 and SD2 by two to realize, this two shielding sheet SD1 and SD2 may be disposed at same conductor layer (such as an elargol layer), is separated out shielding sheet SD1 and the SD2 of two sections of mutually insulateds with a space SLT.If necessary, it is also possible to multistage shielding sheet shields the winding wires under both-end outlet framework.
Refer to Fig. 6, it illustrates with a plane graph to be provided with a touch control sensor 10 ' of the embodiment of the present invention staggered multiple electrode U and D in sensing region SA, and be provided with multiple wire Lu and Ld.Two electrode U groups are integrated by wire Lu and coiling is to output place Po, wire Ld then group two electrode D coiling to output place Po, with at output place Po by the electronic signal transmission of each group electrode to circuit board.With Fig. 1 the difference is that, in Fig. 6, each wire Lu and Ld is coiling by the lower sideline SAd of sensing region SA, therefore can be considered a kind of single-ended outlet framework.
When electrode D and electrode U is staggered for a queue in the x-direction, except the electrode U being arranged in the electrode D of sensing region SA high order end and be arranged in low order end, other each electrode D in queue can be adjacent to an electrode U, each electrode D then left and right respectively at the right and left and be adjacent to an electrode U.In this embodiment, due to electrode D only adjacent electrode U on the right of it of high order end, so obvious edge effect can occur electrode D；It is to say, the characteristic that high order end electrode D is when sensing touch-control and other electrodes D difference to some extent in performance meeting and queue.In like manner, low order end electrode U can be influenced by edge effect impact so that it is operating characteristics cannot mate with other electrodes U in queue.It should be noted that the sensing of position of touch is had negative impact by edge effect.
Whether single-ended outlet framework or both-end outlet framework, the electrode of touch control sensor is usually formed by different conductors from wire；For example, the former may be disposed at indium tin oxide conductor layer, and the latter is then standing is placed in elargol layer.Owing to the place of coupling between the two (namely routing place) relates to the connection of two kinds of heterogeneous conductors, therefore what consolidate couples to need suitable area to guarantee；For example, namely the 6th figure denotes electrode U and the wire Lu routing place Bu coupled, and also has electrode D and the wire Ld routing place Bd coupled.Owing to area is relatively big, these places of coupling/routing place also can form equivalent capacity and couple unexpected capacitance change mistakenly.It is preferred that this place of coupling also is shielded.
Preferably, the electrode that two (or more) shapes are identical can be coupled to same group, but being arranged again a difform electrode between shape identical electrodes, the coiling needed for the existing grouping of historical facts or anecdotes may require that the wire jumper inhomogeneity electrode to cross between two homogeneous electrode.The demand of wire jumper is especially apparent at single-ended outlet framework.Fig. 6 also schematically indicates several wire jumper place Jc.Need to cross over wire Lu at these wire jumper places Jc, wire Ld but keep insulation with wire Lu, therefore each wire jumper place Jc need to realize with the conductor layer of two mutually insulateds；Add aforesaid shielding to be also required to and each wire Lu and Ld insulation, therefore, if without suitably arranging, the conductor layer (being for example three layers of silver glue-line) that need to consume three mutually insulateds realizing the wire jumper needed for shielding and grouping.
In order to simplify the required conductor layer used of grouping and shielding, in another specific embodiment, may utilize the existing two-layer conductor layer of circuit board (such as a flexible circuit board) and realize wire and shielding sheet/grouping respectively.Refer to Fig. 7 and Fig. 8, it illustrates the touch control sensor 30 of the embodiment of the present invention respectively with plane projection and stereochemical structure.Touch control sensor 30 is provided with multiple electrode U and electrode D (only drawing part), is arranged at a conductor layer ITO1 (being for example indium tin oxide conductor layer)；This conductor layer ITO1 framework goes out an x/y plane, and the major part of each electrode U and D is all distributed in the sensing region SA of this plane, to sense the touch-control of user.Each electrode U and D can have sub-fraction to extend to outside sensing region SA and be respectively coupled to wire Lu1 and the Ld1 of a correspondence.Each wire Lu1 and Ld1 is arranged at same conductor layer Ag1 (being for example an elargol layer).The other end of each wire Lu1 and Ld1 is then respectively coupled to wire Lu2 and the Ld2 of a correspondence；Each wire Lu2 and Ld2 mutually insulated, but it is arranged at the same conductor layer FPC1 in flexible circuit board.Realize wire Lu3 and the Ld3 of grouping wire jumper another conductor layer FPC2 that can be arranged in flexible circuit board with shielding sheet SD.For example, conductor layer FPC2 can be the conductor layer of flood paving copper, etches insulation hole SLT above to be separated out each wire Lu3 and Ld3；And two (or more) wire Lu2 just can be coupled to same group by each wire Lu3, the Ld2 grouping of two (or more) wires then can be integrated by each wire Ld3.It is to say, in two electrode U of grouping, each electrode U is coupled to wire Lu3 via corresponding wire Lu1, Lu2, and can export, in one of them of wire Lu2, the capacitance change that this group senses respectively.In like manner, in two electrode D of grouping, each electrode D is coupled to wire Ld3 via corresponding wire Ld1, Ld2, and can export, in one of them of wire Ld2, the capacitance variations that this group senses respectively.
As it is shown in fig. 7, coupling between shielding sheet SD maskable wire Ld1-Ld2 and the Lu1-Lu2 formed by conductor layer FPC2；When arranging the position of wire Lu3, then can maintain an appropriately distance between each wire Lu3 and the lower sideline SAd of sensing region SA, to avoid wire Lu3 to be coupled to unexpected capacitance change.Refer again to Fig. 7 and Fig. 8, the conductor layer utilizing flexible circuit board existing due to touch control sensor 30 realizes shielding and wire jumper, touch control sensor 30 only need one layer of elargol layer to realize each wire Lu1 and Ld1, the conductor layer needed for touch control sensor 30 can be saved, reduce the cost of touch control sensor 30, also increase the yield of touch control sensor 30.It is preferred that touch control sensor 30 can realize by gold-tinted processing procedure；In gold-tinted processing procedure, it is achieved the indium tin oxide conductor layer ITO1 of electrode has direct electrical connection with the elargol layer Ag1 realizing wire, does not have insulating barrier between the two.
Extension bitmap 7 and the embodiment of Fig. 8, refer to Figure 13 and Figure 14.Figure 13 and Figure 14 illustrate respectively with axonometric chart the embodiment of the present invention touch control sensor 30a and 30b in.In the touch control sensor 30a of Figure 13, being that two electrode U realize the wire Lu3 and each wire Lu2 of grouping wire jumper and integrate and be arranged at the conductor layer FPC1 of circuit board (flexible circuit board), it is then set along in conductor layer FPC2 with shielding sheet SD to be that two electrode D realize the wire Ld3 of grouping wire jumper.That is, in two electrode U of grouping, each electrode U is coupled together via corresponding wire Lu1 (conductor layer Ag1), Lu2 and Lu3 (conductor layer FPC1), and can export, in one of them of wire Lu2, the capacitance variations that this group senses respectively.In two electrode D of grouping, each electrode D is then coupled to wire Ld3 (conductor layer FPC2) via corresponding wire Ld1 (conductor layer Ag1), Ld2 (conductor layer FPC1), and can export, in one of them of wire Lu2, the capacitance variations that this group senses respectively.Under this framework, all wires coupling electrode U all can be shielded under shielding plate SD.
In touch control sensor 30a, electrode D cross-sectional width (size) in the x-direction is cumulative along-y direction by its top, and couples wire Ld1, Ld2 and Ld3 in the bottom that cross-sectional width is the widest.When user position of touch is moved towards bottom by the top of each electrode D, the capacitance change that each electrode D is coupled to namely can be cumulative and increase along with sectional dimension；In this case, even if position of touch is close or crosses shielding sheet SD and makes wire Ld3 be also coupled to capacitance change, the electrode D capacitance variations of each wire Ld3 reaction correctly maintain cumulative trend, be not result in coordinate and analyze mistake.Even if it is to say, the bottom being closely located to electrode D of wire Ld3, being also unlikely to affect the function of touch control sensor 30a.Therefore, can there is bigger design flexibility when arranging the position of wire Ld3 for touch control sensor 30a.
In the touch control sensor 30b of Figure 14, it is that two electrode U realize the wire Lu3 and each wire Lu2 of grouping wire jumper and integrate and be arranged at the conductor layer FPC1 of circuit board (flexible circuit board), is that two electrode D realize the wire Ld3 of grouping wire jumper and are also arranged at conductor layer FPC1 together with each wire Ld2.That is, in two electrode U of grouping, each electrode U is coupled together via corresponding wire Lu1 (conductor layer Ag1), Lu2 and Lu3 (conductor layer FPC1), and can export, in one of them of wire Lu2, the capacitance variations that this group senses respectively.In two electrode D of grouping, each electrode D is then coupled together via corresponding wire Ld1 (conductor layer Ag1), Ld2 and Ld3 (conductor layer FPC1), and can export, in one of them of wire Lu2, the capacitance variations that this group senses respectively.Under this framework, conductor layer FPC2 forms a complete shielding plate SD；The all wires coupling each electrode U and L all can be shielded under the shielding plate SD of conductor layer FPC2.In touch control sensor 30,30a and 30b, conductor layer Ag1 also can be an indium tin oxide conductor layer, and its available print processing procedure manufactures, and can save the procedure for processing of elargol layer.
Printing process is the another kind of processing procedure different with gold-tinted processing procedure.In this kind of processing procedure, arrange and between the indium tin oxide conductor layer of electrode and elargol layer, have an insulating barrier, make indium tin oxide conductor layer and the insulation of elargol layer.Refer to Fig. 9 and Figure 10, it illustrates the touch control sensor 40 of another embodiment of the present invention respectively with a plane graph and an axonometric chart；This touch control sensor 40 is suitable for making with printing process.As shown in Figure 10, touch control sensor 40 is also provided with multiple staggered electrode U in the x-direction and electrode D in conductor layer ITO1, and, it is also disposed in conductor layer ITO1 in order to the wire Lu1 of group two electrode U, is integrated with two electrode U of grouping.Corresponding to each wire Lu1, then it is provided with each wire Lu2, each wire Lu1 and a wire Lu2 in conductor layer Ag1 and couples, with by the electrode U coiling of group to output place Po.On the other hand, in order to the wire Ld of two electrode D groupings is also located at conductor layer Ag1, each wire Ld and each wire Lu2 mutually insulated, and each wire Ld extends to form a shielding sheet, make its plane projection can overlap with the plane projection part of at least one wire Lu1 or overlap completely, namely by wire Ld together with the Function Integration Mechanism of shielding plate, carry out shielded conductor Lu1 with wire Ld, and make wire Lu2's to be located away from sensing region SA, as shown in Figure 9.Electrode D cross-sectional width (size) wd in the x-direction be by the minimal width w0 on its top along-y direction the cumulative very big width w1 to its bottom, and each wire Ld is coupled to each electrode D in the bottom of electrode D.When user position of touch is moved towards bottom by the top of each electrode D, the capacitance change that each electrode D is coupled to namely can be cumulative and increase along with sectional dimension wd；In this case, even if position of touch is close or crosses the bottom of electrode D and makes wire Ld be also coupled to capacitance change, the electrode D capacitance change of each wire Ld reaction still correctly maintain cumulative trend, be not result in coordinate and analyze mistake.Therefore, electrode Ld may be extended to does not affect touch-control sensing function for shielding sheet.
Refer to Figure 11, it illustrates the touch control sensor 50 of yet another embodiment of the invention with a plane graph, each electrode U, each electrode D, by the wire Lu1 of electrode U grouping be all arranged at same conductor layer (such as an indium tin oxide conductor layer) in order to the wire Ld1 of group electrode L.Two (or more) electrode U can be coupled as a group on top wider for electrode U by wire Lu1；In like manner, wire Ld1 is then integrated with two (or more) electrode L in bottom wider for electrode D, forms same group.Wire Lu1, Ld1 can more respectively via wire Lu2, Ld2 (such as saying it is elargol layer conductor) coiling to output place Po to be coupled to circuit board.Owing to wire Lu1, Ld1 and each electrode U and L of grouping are all located at same conductor layer, therefore the present embodiment also can simplify the required coiling resource used of group feature.
Refer to Figure 12, the touch control sensor 60 of its illustrated that yet another embodiment of the invention.When discussing Fig. 6, once mentioning the touch-control sensing electrode being arranged in two ends is easily affected by edge effect.And namely the touch control sensor 60 of Figure 12 is a solution illustrating the present invention to overcome edge effect.In touch control sensor 60, except be staggered in the x-direction in sensing region SA queue using as sensing electrode each electrode U and electrode D except, outside sensing region SA, also separately have additional one around the auxiliary electrode FC of sensing region SA, in order to compensate edge effect, reduce or eliminate the impact that position of touch is sensed by edge effect.For compensating the edge effect of high order end electrode D and low order end electrode U, this auxiliary electrode FC can be arranged in same conductor layer with each electrode U and electrode D, with the characteristics match with each electrode U, D.In addition, auxiliary electrode FC and the spacing distance d1 of low order end electrode U can and electrode U and the D adjacent distance d0 in queue equal.The spacing distance d1 ' of auxiliary electrode FC and high order end electrode D can also be equal to distance d0.The electric circumstance that other electrodes D and U adjoin consequently, it is possible to surrounding's electric circumstance of high order end electrode D and low order end electrode U is similar in queue, makes the sensed characteristic of high order end electrode D and low order end electrode U mate with showing other electrodes D and U in energy and queue.As shown in figure 12, auxiliary electrode FC a wire Lc coiling can also be coupled to circuit board to output place Po.Owing to auxiliary electrode FC is longer along the development length of sensing region SA, auxiliary electrode FC also can arrange an elargol layer to strengthen its conductive characteristic and frequency response.
In summary, the invention provides solution to overcome the periphery problem of touch control sensor, to reduce the cost of touch control sensor, to increase the production yield of touch control sensor, also promote the performance of touch control sensor.
In sum, although the present invention discloses as above with preferred embodiment, and so it is not limited to the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention ought define with letter of authorization and be as the criterion.
Claims (15)
1. a touch control sensor, includes:
Multiple electrodes, are distributed in a plane；A part for each electrode is arranged in the sensing region in this plane；
Multiple wires, each wire couples at least one of those electrodes to be conducted to outside this sensing region；And
The shielding sheet of one conductive material, electrically isolates from those wires, and this shielding sheet covers a part for those wires outside being located at this sensing region, with shielding, the touch control capacitance of those wires is coupled,
Wherein each wire includes:
Multiple first wires, are respectively coupled to those electrodes；And
One second wire, couples some first wires in those first wires；
Wherein, this second wire and this shielding sheet are arranged at same conductor layer.
2. touch control sensor as claimed in claim 1, it is characterised in that this shielding sheet in this plane be projected in this sensing region outside, and at least one of those wires have at least part to overlap with this shielding sheet in the projection of this plane in the projection of this plane.
3. touch control sensor as claimed in claim 1, it is characterised in that this shielding sheet is along the crossing sideline of at least two of this sensing region around this sensing region.
4. touch control sensor as claimed in claim 1, it is characterized in that, this second wire and this shielding sheet are arranged at one first conductor layer of a circuit board, each wire some be arranged at one second conductor layer of this circuit board, this first conductor layer and the insulation of this second conductor layer.
5. touch control sensor as claimed in claim 4, it is characterised in that this circuit board is a flexible circuit board.
6. touch control sensor as claimed in claim 4, it is characterised in that those first wires are arranged at this second conductor layer, and each wire also comprises multiple privates, is respectively coupled between those electrodes and those the second wires；Those privates are arranged at one the 3rd conductor layer.
7. touch control sensor as claimed in claim 6, it is characterised in that the 3rd conductor layer is an elargol layer.
8. touch control sensor as claimed in claim 6, it is characterised in that the 3rd conductor layer is an indium tin oxide conductor layer.
9. touch control sensor as claimed in claim 1, it is characterised in that also comprise:
Multiple second electrodes, are distributed in this plane；And
Multiple privates, each privates comprises:
Multiple privates, are respectively coupled to those the second electrodes；And
One the 5th wire, couples those privates；
Wherein, those privates and those first wires are arranged at same conductor layer.
10. touch control sensor as claimed in claim 9, it is characterised in that this second wire and this shielding sheet are arranged at one first conductor layer of a circuit board；Each wire some be arranged at one second conductor layer of this circuit board；5th wire and those privates are arranged at this second conductor layer, and this first conductor layer insulate with this second conductor layer.
11. touch control sensor as claimed in claim 9, it is characterised in that each electrode and each second electrode are staggered along a first direction.
12. touch control sensor as claimed in claim 1, it is characterised in that each electrode has a top and a bottom；Each electrode couples this first wire in this bottom, and each electrode is cumulative to this bottom by this top along the sectional dimension of a preset direction.
13. a touch control sensor, include:
Multiple first electrodes, are distributed in a plane, and a part for each first electrode is arranged in the sensing region in this plane；
Multiple second electrodes, are distributed in this plane, and a part for each second electrode is arranged in this sensing region, and electrically isolates from each first electrode；
Multiple first wires, each first wire is coupled at least two of which of those the first electrodes；And
Multiple second wires, each second wire is coupled at least two of which of those the second electrodes, and each second wire, each first electrode and each second electrode are arranged at same conductor layer,
Wherein, each first wire and each second wire mutually insulated and be arranged at different conductor layers, and each first wire has at least part to overlap to play shielding action at least one of projection and those the second wires of this plane.
14. touch control sensor as claimed in claim 13, it is characterized in that, each first electrode has one first end and one second end, each first electrode is cumulative to this second end by this first end along the sectional dimension of a preset direction, and at least two of which of each first wire and those the first electrodes is coupled to this second end of each first electrode.
15. touch control sensor as claimed in claim 13, it is characterised in that each first electrode and each second electrode are staggered along a preset direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110084856.8A CN102707823B (en) | 2011-03-28 | 2011-03-28 | Touch control sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110084856.8A CN102707823B (en) | 2011-03-28 | 2011-03-28 | Touch control sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102707823A CN102707823A (en) | 2012-10-03 |
| CN102707823B true CN102707823B (en) | 2016-07-06 |
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| TWI486830B (en) * | 2012-10-11 | 2015-06-01 | E Ink Holdings Inc | Touch sensor |
| CN103838408B (en) * | 2012-11-22 | 2017-07-11 | 宸鸿科技(厦门)有限公司 | Monolithic glass Trackpad and preparation method thereof |
| CN104102397B (en) * | 2013-04-12 | 2017-04-19 | 晨星半导体股份有限公司 | Self-contained touch panel |
| TWI486841B (en) | 2013-06-26 | 2015-06-01 | Young Lighting Technology Inc | Touch module |
| CN104345940A (en) * | 2013-07-31 | 2015-02-11 | 南昌欧菲光科技有限公司 | Transparent conductive film and lead electrodes thereof |
| 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 |
| CN109445636B (en) * | 2018-10-31 | 2020-08-14 | 上海海栎创微电子有限公司 | Edge touch coordinate compensation method for self-capacitance touch screen |
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