CN102566838A - Capacitive touch sensor and touch display device - Google Patents
Capacitive touch sensor and touch display device Download PDFInfo
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- CN102566838A CN102566838A CN2010105989801A CN201010598980A CN102566838A CN 102566838 A CN102566838 A CN 102566838A CN 2010105989801 A CN2010105989801 A CN 2010105989801A CN 201010598980 A CN201010598980 A CN 201010598980A CN 102566838 A CN102566838 A CN 102566838A
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Abstract
Disclosed are a capacitive touch sensor and a touch display device. The capacitive touch sensor comprises a driving layer, a sensing layer and an insulating layer between the driving layer and the sensing layer, the driving layer is provided with a plurality of parallel driving wires, each driving wire comprises a plurality of electrodes and driving connection portions connected with the driving electrodes, the sensing layer is provided with a plurality of parallel sensing wires, the sensing wires are perpendicular to the driving wires, each sensing wire comprises a plurality of sensing electrodes and sensing connection portions connected with the sensing electrodes, the sensing connection portions and the corresponding driving connection portions are orthogonally stacked, the sensing electrodes and the driving electrodes are mutually staggered, and at least one of each driving electrode and each sensing electrode is a hollow electrode. The capacitive touch sensor and the touch display device can increase light transmissivity.
Description
Technical field
The present invention relates to the touch sensible technology, particularly relate to a kind of capacitance touch induction installation and touch display unit.
Background technology
Touch-screen is as a kind of input media, than keyboard and mouse, for the user provides better convenience.With the interface of touch-screen as a kind of user interactive, be integrated in the historical remote of display panels such as LCD, touch-screen has resistance-type, condenser type, surface acoustic wave type, infrared type or the like.Because cost, resistive touch screen still has widely and uses at present.The driving principle of resistive touch screen is to utilize the mode of voltage drop to seek the coordinate of contact point; This type of touch-screen needs the user to apply certain pressure to make up and down two-layer conductive plane in certain some conducting; To form a conducting loop; Confirm its position through the change in voltage that detects this point, this mode can't realize multiple point touching.
Condenser type is compared other several kinds of structures, and technology is simpler, need not produce the distortion of liquid crystal cell, also unlike the optical profile type that kind many restrictions is arranged.Capacitive touch screen can be divided into surface capacitance type and projected capacitive again.Surface capacitance type touch screen is to have around the conductive plane of even resistance characteristic respectively making alive one to detect electric current and change.On four angles of surface capacitance screen is four electrodes; Under their effect, conductive plane forms an electric field, when the finger contact plane; Because human body is a conductor; The weak current that four limit electrodes send flows to the contact, and produces a voltage difference, and contact point has determined the size of this electric current to the distance of electrode.According to this principle, controller calculates the ratio of electric current through four electrodes, and draws the coordinate position of contact point according to specific formula.
Projection-type capacitive touch screen is the main flow of following touch screen technology, and projection-type capacitive touch screen can be divided into self-capacitance structure and mutual capacitance structure according to its touch control detection principle.In the self-capacitance model, finger can be thought the electric capacity of a ground connection, and before finger touches, there is stray capacitance in system, and behind finger touch, can think has increased the ground connection of system total capacitance.Therefore, detect the variation of this system's ground capacitance, just can detect finger and whether touch.And in the mutual capacitance model, a mutual capacitance is arranged between the drive wire of system and the line of induction, behind finger touch; Some electric current flows into finger; Whether can change for mutual capacitance this moment in equivalence, thereby the detection signal of induction line end is changed, detect finger and touch.
The projection-type mutual capacitance touchscreens has the following advantages: one. have the advantage of capacitive touch screen, promptly the life-span long, transmittance is higher; Two. can realize multi-point touch; Three. cost is lower than surface capacitance type touch screen.
The structural representation of the existing projection-type mutual capacitance touchscreens of Fig. 1 to Fig. 4, Fig. 1 is a sectional view, and Fig. 2 and Fig. 3 are respectively the graphic structures of Drive Layer and inductive layer, and Fig. 4 is a vertical view.As shown in Figure 1, said mutual capacitance touchscreens is made up of two-layer transparency conducting layer (ITO), and one deck is a Drive Layer 11; Another layer is an inductive layer 13; In Drive Layer 11 and 13 of inductive layers is insulation course 12, has insulation course 14 and color rete (colored filter, not shown among Fig. 1) to be separated by outside the inductive layer 13.
Above-mentioned projection-type mutual capacitance touchscreens is worked as light and will be reduced through out-of-date transmitance owing to have X and Y direction electrode in display device, reflectivity can reduce when especially being applied to reflection display device or half-reflection and half-transmission display device.
Publication number is that the U.S. Patent application of US 2009/0096760A1 discloses a kind of LCD of integrating touch control sensor, and it mainly is the electrode that is designed with directions X on first detecting layer on the substrate, and along the directions X rule electrode white space of arranging; Be insulation course on this layer, second detecting layer is formed on the insulation course, is designed with the electrode of Y direction, and along the Y direction rule electrode white space of arranging, the Y direction is vertical with directions X; Look resistance on the color film corresponds to the white space of Y direction and directions X electrode when forming.This scheme can promote light transmission rate, but the formation limited location of look resistance makes that in electrode lay-out the layout structure of whole LCD is comparatively complicated.
Summary of the invention
The problem that the present invention solves provides a kind of novel, simple capacitance touch induction installation of layout structure, and it is applied to can promote light transmission rate in the display device.
For addressing the above problem, the present invention provides a kind of capacitance touch induction installation, comprising: the insulation course between Drive Layer, inductive layer and Drive Layer and the inductive layer,
Said Drive Layer has many parallel drive wires, and said drive wire comprises a plurality of drive electrodes and the driving connecting portion that is connected said drive electrode;
Said inductive layer has many parallel lines of induction; The said line of induction is vertical with said drive wire; The said line of induction comprises a plurality of induction electrodes and the induction connecting portion that is connected said induction electrode; Said induction connecting portion and driving connecting portion are over against overlapping, and said induction electrode and drive electrode stagger each other
Having an electrode in said a plurality of drive electrode and the induction electrode at least is the hollow out electrode.
Alternatively, said a plurality of drive electrode and induction electrode are the hollow out electrode.
Optional; The induction ratio of said hollow out electrode is relevant with the electrode transmits light rate; The fretwork area that said electrode transmits light rate is said hollow out electrode accounts for the number percent of said hollow out electrode area, said induction ratio be corresponding to the touch sensible sensitivity of hollow out electrode with corresponding to the said hollow out electrode ratio of the touch sensible sensitivity before the hollow out not.
Alternatively, said electrode transmits light rate is less than or equal to 50%, and said induction ratio is greater than 80%.
Alternatively; The figure of said drive electrode and induction electrode is rhombus; Said driving connecting portion and a plurality of is connected to the diagonal line of drive electrode of this driving connecting portion on same straight line, and said induction connecting portion and a plurality of is connected to the diagonal line of induction electrode of this induction connecting portion on same straight line.
Alternatively, the figure of said drive electrode and induction electrode is square.
Alternatively, said drive electrode and induction electrode are intervally arranged in the horizontal direction with on the vertical direction, and the angle of said driving connecting portion or induction connecting portion and horizontal direction is 45 degree.
Alternatively, the not openwork part of said hollow out electrode is a diamond-annular.
For addressing the above problem; Embodiment of the present invention also provides a kind of touch display unit; Comprise colored filter and the touch induction device that is arranged in the said colored filter, it is characterized in that said touch induction device is above-mentioned capacitance touch induction installation.
Optional, said capacitance touch induction installation is arranged at said colored filter top.
Optional, said capacitance touch induction installation is arranged at said colored filter below.
Optional, said capacitance touch induction installation is integrated in the said colored filter.
Alternatively, said colored filter comprises be in the light matrix and by said black the be in the light red color resistance that matrix separates, the resistance of green look and the resistance of blue look of black.
Alternatively, the openwork part of said hollow out electrode hinders corresponding with said red color resistance, the resistance of green look with blue look.
Alternatively, said hollow out electrode has fenestral fabric.
Compared with prior art; Technique scheme has proposed a kind of novel, simple capacitance touch induction installation of layout structure and touch display unit; Can be on existing drive wire and line of induction architecture basics; Through electrode (drive electrode of drive wire and/or the induction electrode of the line of induction) is made the hollow out electrode, promptly can increase light transmission rate.And the formation position of the look resistance of colored filter is not limited to below the white space between the electrode, also can below electrode, so more help the layout of touch display unit, simplifies its layout structure.
Confirm the electrode coverage rate of hollow out electrode through the induction ratio, confirm the fretwork area of hollow out electrode thus, can when improving light transmission rate, not influence touch sensible sensitivity.
Drive electrode and induction electrode for the square and in the horizontal direction be intervally arranged on the vertical direction; It is vertical each other with the induction connecting portion and be 45 with the angle of horizontal direction and spend to drive connecting portion; Help wires design; Reduced the peripheral wiring of the drive wire and the line of induction, thus the frame of the touch-screen that narrows.
The openwork part of hollow out electrode is corresponding with the resistance of the look of colored filter, can further reduce the waste of luminous energy, promotes light transmission rate to a greater degree.
Description of drawings
Fig. 1 to Fig. 4 is the structural representation of existing a kind of capacitive touch screen;
Fig. 5 is the structural representation of the capacitance touch induction installation of the embodiment of the invention;
Fig. 6 is the electrode schematic equivalent circuit that the mutual capacitance touch sensible does not detect during hollow out of capacitance touch induction installation;
The schematic equivalent circuit that the mutual capacitance touch sensible detected when Fig. 7 was the electrode hollow out of capacitance touch induction installation;
Fig. 8 be the embodiment of the invention induction ratio and electrode coverage rate concern synoptic diagram;
Fig. 9 is the synoptic diagram that the hollow out electrode of the embodiment of the invention covers a pixel;
Figure 10 is the synoptic diagram that the hollow out electrode of the embodiment of the invention covers a plurality of pixels.
Embodiment
The capacitance touch induction installation of embodiment of the present invention comprises: the insulation course between Drive Layer, inductive layer and Drive Layer and the inductive layer; Wherein, Said Drive Layer has many parallel drive wires, and said drive wire comprises a plurality of drive electrodes and the driving connecting portion that is connected said drive electrode; Said inductive layer has many parallel lines of induction; The said line of induction is vertical with said drive wire; The said line of induction comprises a plurality of induction electrodes and the induction connecting portion that is connected said induction electrode; Said induction connecting portion and driving connecting portion are over against overlapping, and said induction electrode and drive electrode stagger each other; In said a plurality of drive electrode and the induction electrode at least the part (having one at least) electrode be the hollow out electrode.
The material of Drive Layer and inductive layer can be tin indium oxide (ITO), in drive electrode and the induction electrode at least partial electrode be that the hollow out electrode specifically can be: the part drive electrode is the hollow out electrode; Perhaps, partial electrode is the hollow out electrode; Perhaps, part drive electrode and part induction electrode are the hollow out electrode; Perhaps, all drive electrodes are the hollow out electrode with all induction electrodes.Said hollow out electrode is meant the removed electrode of electrode material (ITO) of openwork part, through with an electrode hollow out part because openwork part does not have the ITO material, thus light during through openwork part energy can not lose, thereby increased light transmission rate.
Below in conjunction with accompanying drawing and embodiment the specific embodiment of the invention is done detailed explanation.
Fig. 5 is the structural representation of the capacitance touch induction installation of the embodiment of the invention, and in conjunction with Fig. 1 and Fig. 5, the capacitance touch induction installation comprises: the insulation course 12 between Drive Layer 11, inductive layer 13 and Drive Layer 11 and the inductive layer 13.
Drive electrode 301 is the hollow out electrode with induction electrode 303, and it has openwork part 305, and drive electrode 301 areas are identical with the induction electrode area, and the area of openwork part is also identical; Drive connecting portion 311 and induction connecting portion 313 over against overlapping place 302 and the side direction place form mutual capacitance, drive wire 301 is connected with other circuit through peripheral wiring 304 with the line of induction 303.
Can with etching technics Drive Layer 11 be etched into many parallel drive wires 31 through photoetching, inductive layer 13 is etched into many parallel lines of induction 33.In the present embodiment; Drive electrode 301 all is the hollow out electrode with induction electrode 303; In other embodiments, also can be that part drive electrode 301 is the hollow out electrode with induction electrode 303, in addition; The position of Drive Layer 11 and inductive layer 13 can exchange, and the graphic structure of the drive wire 31 of Drive Layer 11 and the line of induction 33 of inductive layer 13 also can exchange.
In conjunction with reference to figure 1 and Fig. 5; The process that touch sensible detects is following: during work; Drive wire applies drive signal successively; Be generally the alternating voltage of tens KHzs (KHz) to hundreds of KHz, all the other do not apply the drive wire ground connection of drive signal, confirm the touch point through the change in voltage that detects the detection signal on each bar line of induction respectively.
The embodiment of the invention is through improving light transmission rate with an electrode hollow out part; But; The inventor finds, with a part of important evaluate parameter that can influence touch sensible of electrode hollow out, i.e. touch sensible sensitivity; Change in detection signal before and after touch sensible sensitivity typically refers to and touches can use " (detection signal during touch-when not touching detection signal)/when not touching detection signal " to represent.
In order to verify the influence of hollow out electrode pair detection signal; The inventor has carried out following circuit simulation; Fig. 6 is the electrode schematic equivalent circuit that the mutual capacitance touch sensible does not detect during hollow out of capacitance touch induction installation, the schematic equivalent circuit that the mutual capacitance touch sensible detected when Fig. 7 was the electrode hollow out of capacitance touch induction installation:
In the equivalent electrical circuit at the intersection point place of Fig. 6 and each bar drive wire shown in Figure 7 and the line of induction; The mutual capacitance that all is equivalent to be coupled of each intersection point place, the edge capacitance sum of pattern edge formation on the pattern edge on electric capacity and the drive wire that forms over against the overlapping place for drive wire and the line of induction and the line of induction.When finger touch; Can the finger equivalence be become resistance and capacitance network, finger exists can produce coupling capacitance, is appreciated that to finger to have taken a bridge; In mutual capacitance the parallel connection electric capacity; Thereby the mutual capacitance equivalence is increased, cause the electric current on the line of induction to change, thereby make the change in voltage of detection signal.
When drive electrode and induction electrode did not have hollow out, as shown in Figure 6, C3 was the mutual capacitance between the drive wire 31 ' and the line of induction 33 ', and C4 ' is the electric capacity between drive wire 31 ' and the finger, C5 ' be the line of induction 33 ' with point between electric capacity.Induced voltage detection analysis when not touching, the voltage value of detection signal V0 are 3.652 μ V; Induced voltage detection analysis during touch, the voltage value of detection signal V0 are 3.965 μ V; Touch sensible sensitivity=(3.965-3.652)/3.652=8.57%.
When drive electrode and induction electrode hollow out, as shown in Figure 7, C3 is the mutual capacitance between the drive wire 31 and the line of induction 33, and C4 is the electric capacity between drive wire 31 and the finger, and C5 is the electric capacity between the line of induction 33 and the finger.Induced voltage detection analysis when not touching, the voltage value of detection signal V1 are 476.634nV; Induced voltage detection analysis during touch, the voltage value of detection signal V1 are 506.887nV; Touch sensible sensitivity=(506.887-476.634)/476.634=6.35%.That is to say that when adopting the hollow out electrode structure, because electrode area reduces, coupling capacitance C4 and C5 reduce with respect to coupling capacitance C4 ' shown in Figure 6 and C5 ', touch sensible sensitivity weakens.
Therefore, the inventor proposes, and the fretwork area of considered hollow out electrode is to the influence of touch sensible sensitivity when improving light transmission rate.And the circuit simulation of the touch sensible detection of inventor when the touch sensible during hollow out does not detect with the electrode hollow out to electrode has also confirmed to have contact between the two.
Be the fretwork area that clearly demonstrates the hollow out electrode and the relation of touch sensible sensitivity; At first do as give a definition: with (fretwork area of hollow out electrode/hollow out electrode area), promptly the fretwork area of the hollow out electrode number percent that accounts for said hollow out electrode area is defined as the electrode transmits light rate; With (the not fretwork area/hollow out electrode area of hollow out electrode), promptly the not fretwork area of the hollow out electrode number percent that accounts for said hollow out electrode area is defined as the electrode coverage rate; Will corresponding to the touch sensible sensitivity of hollow out electrode with corresponding to this hollow out electrode not the ratio of the touch sensible sensitivity before the hollow out be defined as the induction ratio.Wherein, the hollow out electrode area is meant the area of single drive electrode or induction electrode, and the said hollow out electrode not preceding electrode coverage rate of hollow out is 100%.
Touch sensible sensitivity 8.57% counter electrode that Fig. 6 records is hollow out not, and its electrode coverage rate is 100%, correspondingly, and electrode transmits light rate 0%; The touch sensible sensitivity 6.35% corresponding electrode coverage rate that records according to Fig. 7 is 40%, and correspondingly, the electrode transmits light rate is 60%, and in the case, the induction ratio is 74%.
Fig. 8 shows electrode coverage rate and the relation of responding to ratio, from figure, can see, and along with the minimizing (being the minimizing of electrode transmits light rate) of openwork part, the increase of electrode coverage rate, the induction ratio increases gradually.Therefore in practical application; Can make the electrode coverage rate more than 50%; Be that the number percent (electrode transmits light rate) that fretwork area accounts for this hollow out electrode area is no more than 50%, the induction ratio that obtains like this can be greater than 80%, and just fretwork area is less to the influence of touch sensible sensitivity.
Continuation is with reference to figure 5, and the drive electrode 301 of present embodiment and induction electrode 303 are square for identical shape, and area is identical.The center section of drive electrode 301 and induction electrode 303 is by hollow out, and openwork part 305 is a square, and openwork part is not square annular.
Drive wire 31 is vertical each other with the line of induction 33, and the angle of drive wire 31 and the line of induction 33 and horizontal direction is 45 degree.Wherein, drive electrode 301 is intervally arranged with induction electrode 303 in the horizontal direction, also is intervally arranged at vertical direction; Drive connecting portion 311 and respond to connecting portion 313 over against overlapping and vertical each other; A diagonal line (corresponding to a foursquare diagonal line) that drives connecting portion 311 and the drive electrode that is connected this driving connecting portion 311 301 is on same straight line, and a diagonal line (corresponding to foursquare another diagonal line) of responding to connecting portion 313 and the induction electrode that is connected this induction connecting portion 313 303 is on same straight line; The angle that drives connecting portion 311 and horizontal direction (or vertical direction) is 45 degree, and induction connecting portion 313 also is 45 degree with the angle of horizontal direction (or vertical direction).
In the present embodiment; Drive electrode and induction electrode are square (rhombus that diagonal line equates); In other embodiments, drive electrode and induction electrode also can be other shapes, for example the unequal rhombus of diagonal line, rectangle, regular hexagon etc.; With respect to other shape, the rhombus connection has less connection resistances.With drive electrode and induction electrode is that rhombus is an example, and the center section of its electrode is by hollow out, and openwork part is a rhombus, and openwork part is not a diamond-annular.Arranging of drive electrode and induction electrode can be with reference to figure 4; The drive electrode in the vertical direction of drive wire 101 is arranged; The induction electrode of the line of induction 103 is arranged in the horizontal direction; Drive electrode and induction electrode stagger each other; A diagonal line (corresponding to a diagonal line of rhombus) that drives connecting portion and the drive electrode that is connected this driving connecting portion is on same straight line, and a diagonal line (corresponding to another diagonal line of rhombus) of responding to connecting portion and the induction electrode that is connected this induction connecting portion is on same straight line.
Compare with electrode shape and arrangement shown in Figure 4; The drive wire 31 of present embodiment and the electrode shape and the arrangement of the line of induction 33; Make that at same induction region, peripheral wiring 304 has reduced than peripheral wiring 104, the peripheral frame of induction region so just can narrow.
The embodiment of the invention also provides a kind of touch display unit; Comprise colored filter and above-mentioned capacitance touch induction installation; Said capacitance touch induction installation can be arranged at above or below the said colored filter; Perhaps, said capacitance touch induction installation can be integrated in said colored filter, promptly is positioned at same one deck with said colored filter.
Because the drive electrode of the Drive Layer on the colored filter is the hollow out electrode with the induction electrode of inductive layer, openwork part does not have the ITO material, therefore through the light of colored filter during through openwork part energy can not lose, thereby increased light transmission rate.
Said colored filter comprises pixel region, and each pixel region comprises be in the light matrix and by a plurality of colored look resistance that matrix separates of being in the light of said black, like red color resistance, the resistance of green look and the resistance of blue look of black.The black matrix that is in the light is used to block unnecessary light, prevents the influence to showing.
In embodiments of the present invention; Said capacitance touch induction installation is arranged at said colored filter top, and said hollow out electrode (induction electrode or drive electrode) covers on the pixel region, and is as shown in Figure 9; The openwork part 405 of hollow out electrode can correspondence be positioned at red color resistance, the resistance of green look and blue look resistance top; Openwork part 406 can correspondence be positioned at the black matrix top of being in the light, and can reduce the waste of luminous energy so further, and then promote light transmission rate.Openwork part can all cover the look resistance, also can partly cover the look resistance.
In a preferred embodiment; If hollow out electrode (induction electrode or drive electrode) covers a plurality of pixel regions,, black can be openwork part 506 not on being in the light matrix, in each look resistance, can be openwork part 505; Therefore; The hollow out electrode can have fenestral fabric shown in figure 10, can reduce the waste of luminous energy so to a greater degree, and then promotes light transmission rate.
In sum, such scheme has the following advantages:
Through an induction electrode hollow out part with the drive electrode of drive wire and/or the line of induction because openwork part does not have electrode material, so light during through openwork part energy can not lose, thereby increased light transmission rate.And the formation position of the look resistance of colored filter is not limited to the white space below between electrode (drive electrode and induction electrode), also can below electrode, so more help the layout of touch display unit, simplifies its layout structure.
Confirm the fretwork area of hollow out electrode through the induction ratio, can when improving light transmission rate, not influence touch sensible sensitivity.
Drive electrode and induction electrode for the square and in the horizontal direction be intervally arranged on the vertical direction; It is vertical each other with the induction connecting portion and be 45 with the angle of horizontal direction and spend to drive connecting portion; Help the wiring of Drive Layer and inductive layer; Can reduce the peripheral wiring of the drive wire and the line of induction, thus the frame of the touch-screen that narrows.
The openwork part of hollow out electrode is corresponding with the resistance of the look of colored filter, can further reduce the waste of luminous energy, and then promotes light transmission rate.
Though the present invention with preferred embodiment openly as above; But it is not to be used for limiting the present invention; Any those skilled in the art are not breaking away from the spirit and scope of the present invention; Can make possible change and modification, so protection scope of the present invention should be as the criterion with the scope that claim of the present invention was defined.
Claims (15)
1. capacitance touch induction installation comprises: the insulation course between Drive Layer, inductive layer and Drive Layer and the inductive layer,
Said Drive Layer has many parallel drive wires, and said drive wire comprises a plurality of drive electrodes and the driving connecting portion that is connected said drive electrode;
Said inductive layer has many parallel lines of induction; The said line of induction is vertical with said drive wire; The said line of induction comprises a plurality of induction electrodes and the induction connecting portion that is connected said induction electrode; Said induction connecting portion and driving connecting portion are over against overlapping, and said induction electrode and drive electrode stagger each other
It is characterized in that having an electrode in said a plurality of drive electrodes and the induction electrode at least is the hollow out electrode.
2. capacitance touch induction installation according to claim 1 is characterized in that, said a plurality of drive electrodes and induction electrode are the hollow out electrode.
3. capacitance touch induction installation according to claim 2; It is characterized in that; The induction ratio of said hollow out electrode is relevant with the electrode transmits light rate; The fretwork area that said electrode transmits light rate is said hollow out electrode accounts for the number percent of said hollow out electrode area, said induction ratio be corresponding to the touch sensible sensitivity of hollow out electrode with corresponding to the said hollow out electrode ratio of the touch sensible sensitivity before the hollow out not.
4. capacitance touch induction installation according to claim 3 is characterized in that, said electrode transmits light rate is less than or equal to 50%, and said induction ratio is greater than 80%.
5. capacitance touch induction installation according to claim 1; It is characterized in that; The figure of said drive electrode and induction electrode is rhombus; Said driving connecting portion and a plurality of is connected to the diagonal line of drive electrode of this driving connecting portion on same straight line, and said induction connecting portion and a plurality of is connected to the diagonal line of induction electrode of this induction connecting portion on same straight line.
6. capacitance touch induction installation according to claim 5 is characterized in that the figure of said drive electrode and induction electrode is square.
7. capacitance touch induction installation according to claim 6 is characterized in that said drive electrode and induction electrode are intervally arranged in the horizontal direction with on the vertical direction, and the angle of said driving connecting portion or induction connecting portion and horizontal direction is 45 degree.
8. capacitance touch induction installation according to claim 5 is characterized in that, the not openwork part of said hollow out electrode is a diamond-annular.
9. a touch display unit comprises colored filter and touch induction device, it is characterized in that, said touch induction device is each described capacitance touch induction installation of claim 1 to 8.
10. touch display unit according to claim 9 is characterized in that, said capacitance touch induction installation is arranged at said colored filter top.
11. touch display unit according to claim 9 is characterized in that, said capacitance touch induction installation is arranged at said colored filter below.
12. touch display unit according to claim 9 is characterized in that, said capacitance touch induction installation is integrated in the said colored filter.
13. touch display unit according to claim 9 is characterized in that, said colored filter comprises be in the light matrix and by said black the be in the light red color resistance that matrix separates, the resistance of green look and the resistance of blue look of black.
14. touch display unit according to claim 13 is characterized in that, the openwork part of said hollow out electrode hinders corresponding with said red color resistance, the resistance of green look with blue look.
15. touch display unit according to claim 14 is characterized in that, said hollow out electrode has fenestral fabric.
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