CN105373275A - Capacitance touch panel and capacitance touch sensing device having the same - Google Patents
Capacitance touch panel and capacitance touch sensing device having the same Download PDFInfo
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- CN105373275A CN105373275A CN201510444941.9A CN201510444941A CN105373275A CN 105373275 A CN105373275 A CN 105373275A CN 201510444941 A CN201510444941 A CN 201510444941A CN 105373275 A CN105373275 A CN 105373275A
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- Prior art keywords
- touch
- sensible element
- area
- capacitive
- touch sensible
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
- H03K2217/960735—Capacitive touch switches characterised by circuit details
Abstract
Disclosed are a capacitance type touch panel and a capacitance type touch sensing device including the same. The capacitance type touch panel includes first and second touch sensors. The first touch sensor is extended from a touch area in parallel to a first direction, but has a first width from a first edge area of the touch area to the center of the touch area; and has a second width, which is narrower than the first width, from the center of the touch area to a second edge area of the touch area. The second touch sensor is extended from the touch area in parallel to the first direction, but has a second width from the first edge area of the touch area to the center of the touch area; and has a first width from the center of the touch area to the second edge area of the touch area. Thus, even if a window is bent due to a strong pressure is applied to the capacitance type touch panel, touch sensing distortion occurring on the center of the capacitance type touch panel is distributed such that the touch sensing distortion is reduced.
Description
Technical field
Exemplary embodiment of the present invention relates to a kind of capacitive touch panels and has the capacitance touch induction installation of this panel, and more particularly exemplary embodiment of the present invention relates to and a kind ofly can more answer the capacitive touch panels of the electric capacity of touch inductor and have the capacitance type touch apparatus of this panel by sense of stability.
Background technology
Along with the development of electronic engineering technology and information technology, electronic equipment importance in daily life comprises working environment to be increased gradually.In recent years, the kind of electronic equipment is diversified.Especially, in field of portable electronic apparatus, as mobile phone and portable media player (PMP), almost every day is all at the equipment issuing the subsidiary New function of a large amount of new designs.
The electronic equipment kind contacted along with people in daily life gets more and more, and electronic functionalities is more and more first evolved and complicated, more needs a kind of user easily to learn and can the user interface of intuitive operation.
Touch panel device as the input equipment that can meet such demand more and more attracts attention, and has been widely used in multiple electronic device field.Touch panel device is the equipment of the upper user touch location of detection display screen, and execution electronic equipment controls comprehensively, comprises and uses the information of the touch location induced as the control of input information to display screen.
When normal pressure is applied to typical capacitive touch panels, the report area of actual touch region and capacitive touch panels matches with man-to-man corresponding relation, and undistorted.Therefore, can not occur because applying to suppress the induced distortion caused.The load of pressure is determined by the material of lid window and thickness.When lens cap is tempered glass and guarantee the clearance of more than 500 microns, it is no problem just to determine.
On the other hand, when strong pressure is applied to the capacitive touch panels of typical touch induction installation, the report area on capacitive touch panels is transferred to the center of the capacitive touch panels corresponding with actual touch region.That is, window, by touching bowing under load, makes touch coordinate transfer to the center of capacitive touch panels from actual touch point.Now, the spacing distance between display panel and touch sensible element reduces, and the distortion of touch sensible is produced gradually.
In addition, when very strong pressure is applied to the capacitive touch panels of typical touch induction installation, the report area on capacitive touch panels is transferred to the center of the capacitive touch panels corresponding with actual touch region.That is, window, by touching bowing under load, makes touch coordinate transfer to the center of capacitive touch panels from actual touch point.Now, the spacing distance between display panel and touch sensible element is zero, and the distortion of touch sensible is produced gradually, makes the upper surface of display panel also be retracted into the back side of display board.Because the difference of the boundary condition when touch sensitive between surface of contact and the noncontact face of display panel produces greatly, touch sensible distortion is remarkable.
Summary of the invention
Need the problem solved
An aspect of of the present present invention be exactly in order to solve prior art Problems existing, the object of this invention is to provide by decentralized capacitance formula touch panel center occur touch sensible distortion realize electric capacity sense of stability should.
Another object of the present invention is just to provide the capacitance touch induction installation with above-mentioned capacitive touch panels.
According to an aspect of the present invention, a kind of capacitive touch panels, comprise: the first touch sensible element and the second touch sensible element, first touch sensible element extends in parallel along first direction in touch area, first touch sensible element comprise the core from the first fringe region of touch area to touch area the first width and from touch area core to the second width of touch area second fringe region, the first width and narrower than the second width; And the second touch sensible element, extend in parallel along first direction in touch area, the first fringe region that the second touch sensible element comprises touch area is to the first width of the second width of the core of touch area and the second fringe region from the core of touch area to touch area.
In one embodiment, the first touch sensible element and the second touch sensible element defining sensing unit, in the case, the arrangement being arranged in the first and second touch sensible elements of sensing unit adjacent one another are is mutually the same.
In one embodiment, the first touch sensible element and the second touch sensible element defining sensing unit, in the case, the arrangement being arranged in the first and second touch sensible elements of sensing unit adjacent one another are is mutually symmetrical.
In one embodiment, capacitive touch panels also comprise the first via by connecting up, secondary route connects up, the 3rd route connects up and the 4th route connects up, the first via by wiring be formed in surround touch area neighboring area to be connected to the first end of the first touch sensible element; Secondary route wiring is formed in the neighboring area of encirclement touch area to be connected to the second end of the first touch sensible element; 3rd route wiring is formed in the neighboring area of encirclement touch area to be connected to the first end of the second touch sensible element; And the 4th route wiring be formed in and surround the neighboring area of touch area to be connected to the second end of the second touch sensible element.
In one embodiment, the first and second touch sensible elements, and above-mentioned first to fourth route wiring is formed in same layer.
In one embodiment, the first touch sensible element and the second touch sensible element have a main part and one to be connected to the afterbody of main part, and in the case, main part has writing board shape.
In one embodiment, capacitive touch panels also comprises many route wirings, be formed in neighboring area around touch area to be connected to two respective ends of the first and second touch sensible elements, in the case, the width that the second width connects up than each route is wide.
In one embodiment, each first touch sensible element and the second touch sensible element have a main part and one to be connected to the afterbody of main part, in the case, main body section wiring is formed with serrate, and afterbody wiring is formed with stripe-shaped.
In one embodiment, the wiring width formed with serrate equals the wiring width formed with stripe-shaped.
In one embodiment, the first and second touch sensible elements each have tail comb shape shape, the first touch sensible element and the second touch sensible element be with serrate arrange bar-shaped to define.
In one embodiment, the spacing between the first touch sensible element and the second touch sensible element is consistent.
In one embodiment, the length of the first corresponding with the first width touch sensible element equals the length of the second touch sensible element corresponding with the second width.
In one embodiment, the length of the first corresponding with the second width touch sensible element equals the length of the second touch sensible element corresponding with the first width.
In one embodiment, the first sides aligned parallel of first direction and capacitive touch panels.
According to another aspect of the present invention, a kind of capacitance touch induction installation comprises capacitive touch panels and capacitive induction loop.Capacitive touch panels comprises the first touch sensible element and the second touch sensible element.First touch sensible element extends in parallel along first direction in touch area, first touch sensible element comprise the core from the first fringe region of touch area to touch area the first width and from touch area core to the second width of touch area second fringe region, the first width and narrower than the second width.Second touch sensible element extends in parallel along first direction in touch area.The first fringe region that second touch sensible element comprises touch area is to the first width of the second width of the core of touch area and the second fringe region from the core of touch area to touch area.Capacitive induction loop is connected to the first and second touch sensible elements respectively and comes touch sensitive position with the capacitance variations of the capacitance variations by responding to the first touch sensible element or the second touch sensible element.
In one embodiment, capacitive induction loop is connected to two ends of the first touch sensible element and two ends of the second touch sensible element.
In one embodiment, capacitive induction loop by the first touch sensible element senses effective touch location corresponding with the first width, and by the second touch sensible element senses effective touch location corresponding with the first width.
In one embodiment, capacitive touch panels also comprises many routes wirings that the neighboring area be formed in around touch area is connected to two ends of the first touch sensible element and two ends of the second touch sensible element.In the case, capacitive induction loop is connected to the first and second touch sensible elements by the wiring of above-mentioned route, and wherein the width that connects up than each above-mentioned route of the second width is wide.
According to capacitive touch panels and the capacitance touch induction installation with this capacitive touch panels, the first touch sensible element on capacitive touch panels and the second touch sensible element is arranged on when sensing unit comprises, the wide width of the first touch sensible element width narrow with the second touch sensible element is arranged in a part for the touch area corresponding with capacitive touch panels core, and the narrow width of the first touch sensible element and the wide width of the second touch sensible element are arranged on remaining touch area.Therefore, even if capacitive touch panels window bends because strong pressure is applied to capacitive touch panels, the touch sensible distortion of capacitive touch panels centre generation also can be reduced to reduce touch sensible distortion.
In addition, due to the part of touch area and remaining touch area relative to capacitive touch panels core separately to realize touch sensible, actual two touch may be detected.
Brief Description Of Drawings
Describe detailed embodiment by reference to appended accompanying drawing, more than the present invention and other features and aspect can be more obvious, wherein:
Fig. 1 illustrates capacitance touch induction installation structural drawing according to the embodiment of the present invention;
Fig. 2 is the planimetric map that a capacitive touch panels embodiment is as shown in Figure 1 described;
Fig. 3 is the planimetric map that another embodiment of capacitive touch panels is as shown in Figure 1 described;
Fig. 4 is the structural drawing that capacitive induction loop is as shown in Figure 1 described;
Fig. 5 is the working waveform figure that capacitive induction loop is as shown in Figure 4 described;
Fig. 6 is the schematic diagram that capacitive sensing is described by capacitive touch panels as shown in Figure 1;
Fig. 7 schematically illustrates detection signal responds to direction delay curve map along the first induction direction and second as shown in Figure 6;
Fig. 8 a and Fig. 8 b is the schematic diagram that capacitive sensing signal path is described;
Fig. 9 is the structural drawing that capacitance touch induction installation is described according to another exemplary embodiment of the present invention; And
Figure 10 is the structural drawing that capacitance touch induction installation is described according to another exemplary embodiment of the present invention.
Detailed description of the Invention
Below with reference to appended accompanying drawing, describe the present invention more fully in an embodiment of the present invention, which show exemplary embodiment of the present invention.But the present invention can be embodied in many different forms and should not be interpreted as limiting embodiment.On the contrary, these embodiments provided to such an extent as to expose and more thoroughly and complete, can will give full expression to scope of the present invention for those skilled in the art.In the accompanying drawings, in order to clear figure, the size in layer and region and relative size may be exaggerated.
Be understandable that, when a unit or layer are called as " on ", " connection " or " coupling " to another unit or layer, it can directly on, to connect or the unit that is coupled to other unit or layer or middle layer maybe may exist.On the contrary, when an element is called as " directly on ", " is directly connected " or " directly coupled " to another unit or layer, does not have middle unit or layer.Same numbers refers to same unit in full.Used herein, "and/or" comprises all combinations of any and one or more relevant above-mentioned item.
Be understandable that, although term first, second, third, etc. here can be used for describing different elements, assembly, region, layer and part, these elements, assembly, region, layer and part should by the restrictions of these terms.These terms are only used to distinguish one element from another, assembly, region, layer and part.Therefore, be no more than under the interest field of this invention, the first element discussed below, assembly, region, layer and part can be called as the second element, assembly, region, layer and part and can not deviate from instruction of the present invention.
The relative terms in space, as " below ", " below, " " lower ", " above ", " top " etc., be convenient to describe a unit as shown in the figure or another unit of function or the relation of function here.Space relative terms comprises equipment different directions in use or operation to understand, and adding the direction be described in the drawings.Such as, if the equipment in accompanying drawing is overthrown, unit is described to " below " or " below " relative to other unit or function, other unit will be orientated " above " relative to other unit or function.Therefore, typical " below " can comprise above and below a direction.This device can be directed (90-degree rotation or in other directions) and the descriptor of space correlation used in this article can be explained according to this.
It is not restriction the present invention that term used herein is only used to describe specific embodiment.Singulative used herein " a ", " " an and " the " also comprise plural form, unless context separately has clear and definite instruction.When using in explanation, term " comprises " and/or " comprising " can be understood further, clear and definite certain characteristic, entirety, step, operation, unit and/or assembly, but do not get rid of and there is other characteristic one or more, entirety, step, operation, unit, assembly and/or group.
Present embodiments describing the picture of related cross section, is the schematic diagram (and intermediate structure) of the embodiment that the present invention is desirable.Same, because manufacturing technology and/or deviation make the change of shape of chart it is expected to.Therefore, embodiments of the invention should not be interpreted as the special shape of restricted area, should comprise shape devious, such as, by making the shape caused.Such as, be described as a rectangle and insert edge instead of the change of binary from insert district to non-injection regions that region has feature that is round or that bend and/or insertion concentration gradient usually.Equally, some may be caused in disposal area and surperficial insert district by inserting the disposal area formed, it produces by inserting.Therefore, region caption is actually rigorous, and their shape is not in order to the regional true form of that a kind of device is described and the scope that is not meant to limit the present invention.
Unless otherwise prescribed, all terms used herein (comprising technology and scientific terminology) are usually understood with those of ordinary skill in the art of the present invention and are had identical implication, understand these terms as those are in the definition of common dictionary further, should be explained that the implication of the field linguistic context relevant to them is consistent, can not by the Utopian or too formal meaning of explanation one, unless explicitly defined.
Below, the present invention is described in detail with reference to accompanying drawing.
Fig. 1 illustrates capacitance touch induction installation structural drawing according to the embodiment of the present invention.
With reference to figure 1, comprise timing controlled part (100) according to the capacitance touch induction installation of the first exemplary embodiment of the present invention, display panel (200), touch panel (300) and capacitive sensing loop (400).Above-mentioned capacitive sensing loop (400) can be arranged on touch panel (300).When described capacitive sensing loop (400) is arranged on touch panel (300), touch panel (300) can be defined as capacitive touch panels.
Timing controlled part (100) provides the first control signal (CS1), the second control signal (CS2), the 3rd control signal (CS3) and the 4th control signal (CS4) to capacitive sensing loop (400); And receive the induced signal (MS) corresponding with the induction result that capacitive sensing loop (400) provide to calculate touch coordinate.
The graphics control signals for display image signals (IS) (ICS) that display panel (200) reception picture signal (IS) and timing controlled part (100) provide is to show image.Display panel (200) is arranged in below capacitive touch panels (300).
Capacitive touch panels (300) is arranged on display panel (200).Multiple touch sensible element, comprise and extend the first touch sensible element (312) of tail comb shape shape along first direction (D1) and extend the second touch sensible element (314) of tail comb shape shape along first direction (D1), be formed in capacitive touch panels (300) upper parallel with second direction (D2).First touch sensible element (312) and the second touch sensible element (314) can be formed in there is plastics or glass various material substrate on.In the present example embodiment, for convenience of description, 8 sensing units (310) have been shown in Fig. 1, sensing unit (310) is put into quantity and can be changed.The region that sensing unit (310) is formed can be defined as touch area (TA).
In the present example embodiment, each first touch sensible element (312) and the second touch sensible element (314) comprise main part and are connected to the afterbody of main part.Main part can be defined by the writing board shape with wide width, and afterbody can be defined by the wiring with narrow width.Observe the capacitive touch panels (300) of Fig. 1, the main part of the first touch sensible element (312) is arranged in capacitive touch panels (300) upper area, and the main part of the second touch sensible element (314) is arranged in capacitive touch panels (300) lower area.
The bearing of trend of the tail comb shape shape afterbody corresponding with the first touch sensible element (312) is contrary with the extending direction of the tail comb shape shape afterbody corresponding with the second touch sensible element (314).In addition, the afterbody of the first touch sensible element (312) is arranged in the lower area of capacitive touch panels (300), and the afterbody of the second touch sensible element (314) is arranged in the upper area of capacitive touch panels (300).
When observing capacitive touch panels (300) in plan view, sensing unit (310) is parallel to capacitive touch panels (300) vertical direction and is formed, or sensing unit (310) is parallel to capacitive touch panels (300) horizontal direction and is formed.The conductive material that sensing unit (310) has consistent resistance by patterning as indium oxide (ITO) or CNT (CNT) per unit square is formed.In the present example embodiment, sensing unit (310) is formed with single aspect.
Two ends of each first touch sensible element (312) are connected to capacitive sensing loop (400) respectively to receive from capacitive sensing loop (400) transmitting and Received signal strength is supplied to capacitive sensing loop (400) as continuous current.In addition, two ends of each second touch sensible element (314) are connected to capacitive sensing loop (400) respectively to receive from capacitive sensing loop (400) transmitting and Received signal strength is supplied to capacitive sensing loop (400) as continuous current.
Such as, first touch sensible element (312) of the first sensing unit (310) by the first terminal (such as, the part corresponding with wide width) receive first from capacitive sensing loop (400) and transmit (TX11), and provide the first Received signal strength (RX11) by the second terminal (such as, corresponding with narrow width part) to capacitive sensing loop (400).Second touch sensible element (314) of the first sensing unit (310) by the first terminal (such as, the part corresponding with narrow width) receive second from capacitive sensing loop (400) and transmit (TX12), and provide the second Received signal strength (RX12) by the second terminal (such as, corresponding with wide width part) to capacitive sensing loop (400).
In addition, first touch sensible element (312) of the second sensing unit (310) by the first terminal (such as, the part corresponding with wide width) receive the 3rd from capacitive sensing loop (400) and transmit (TX21), and provide the 3rd Received signal strength (RX21) by the second terminal (such as, corresponding with narrow width part) to capacitive sensing loop (400).Second touch sensible element (314) of the second sensing unit (310) by the first terminal (such as, the part corresponding with narrow width) receive the 4th from capacitive sensing loop (400) and transmit (TX22), and provide the 4th Received signal strength (RX22) by the second terminal (such as, corresponding with wide width part) to capacitive sensing loop (400).
In this way, first touch sensible element (312) of the 8th sensing unit (310) by the first terminal (such as, the part corresponding with wide width) receive the 15 from capacitive sensing loop (400) and transmit (TX81), and provide the 15 Received signal strength (RX81) by the second terminal (such as, corresponding with narrow width part) to capacitive sensing loop (400).Second touch sensible element (314) of the 8th sensing unit (310) by the first terminal (such as, the part corresponding with narrow width) receive the 16 from capacitive sensing loop (400) and transmit (TX82), and provide the 16 Received signal strength (RX82) by the second terminal (such as, corresponding with wide width part) to capacitive sensing loop (400).
Capacitive sensing loop (400) is connected to the first and second touch sensible elements corresponding with the multiple sensing units (310) be formed on capacitive touch panels (300).Capacitive sensing loop (400) inputs continuous currents to charge to touch sensible element to each first and second touch sensible elements.The electric capacity that capacitive sensing loop (400) is produced according to touch sensible element and human body by induction to be discharged to the electric capacity that reference voltage required time responds to corresponding touch sensible element, and is supplied to timing controlled part (100) the electric capacity sensed.
In the present example embodiment, capacitive sensing loop (400) can respond to effective touch location by the first touch sensible element corresponding with wide width, and can respond to effective touch location by the second touch sensible element corresponding with wide width.
As mentioned above, according to this exemplary embodiment, when the main part of the first touch sensible element is arranged in the upper area of capacitive touch panels, and second main part of touch sensible element when being arranged in the lower area of capacitive touch panels, the touch sensible distortion that capacitive touch panels core occurs can be dispersed in, therefore, touch sensible distortion can be reduced.Such as, when plastic window or glass window are used for capacitive touch panels, even if also touch sensible distortion can be reduced because strong pressure causes touch sensible window to bend the distortion of generation touch sensible.
In addition, on the capacitive touch panels being applicable to large-scale touch panel device, even if the length of touch sensible element is very long, also more the electric capacity of touch sensible element can be answered by sense of stability.
In addition, when the main part of the first touch sensible element is arranged in the upper area of capacitive touch panels, and second main part of touch sensible element when being arranged in the lower area of capacitive touch panels, capacitive touch panels is divided into upper area and lower area with touch sensitive.As a rule, in the capacitive touch panels situation of single Laser emission structure, can not multiple touch points be responded in same passage multi-touch sensing, but according to the present invention, design capacitance formula touch panel is divided into upper area and lower area, so that can respond to actual two touch.
Fig. 2 is the planimetric map that a capacitive touch panels embodiment is as shown in Figure 1 described.
With reference to figure 1 and Fig. 2, be formed in touch area (TA) sensing unit (310) and comprise the first touch sensible element (312) and the second touch sensible element (314).In the present example embodiment, each first touch sensible element (312) and the second touch sensible element (314) have tail comb shape shape, in addition, each first touch sensible element (312) and the second touch sensible element (314) have writing board shape.
First touch sensible element (312) extends in parallel along first direction (D1) at touch area (TA), first touch sensible element (312) has the first width (W1) from first fringe region of touch area (TA) to the core of touch area (TA) and from touch area (TA) core to touch area (TA) second second width (W2) of fringe region, the first width (W1) and narrower than the second width (W2).When observing capacitive touch panels (300) in Fig. 2, first fringe region of touch area (TA) is corresponding with the upper area of capacitive touch panels (300), and second fringe region of touch area (TA) is corresponding with the lower area of capacitive touch panels (300).
Second touch sensible element (314) extends in parallel along first direction (D1) at touch area (TA), and the second touch sensible element (314) has second width (W2) of the first fringe region to the core of touch area (TA) of touch area (TA) and the core from touch area (TA) the first width (W1) to second fringe region of touch area (TA).
Many route wiring is formed in the neighboring area (PA) surrounding touch area (TA), and many route wirings are connected to two ends of sensing unit (310) respectively, to extend to capacitive touch panels (300) first side.
Such as, the first via is connected to the first end of the first touch sensible element (312) by connect up (322), secondary route wiring (324) is connected to the second end of the first touch sensible element (312), 3rd route wiring (326) is connected to the first end of the second touch sensible element (314), and the 4th route wiring (328) is connected to the second end being formed in neighboring area (PA) second touch sensible element (314).In the present example embodiment, the first via by connect up (322), secondary route wiring (324), the 3rd route wiring (326) and the 4th route wiring (328) along the first touch area (TA) first fringe region extend.
When observing Fig. 2, first fringe region of touch area (PA) can be corresponding with the upper area of capacitive touch panels (300).
Fig. 3 is the planimetric map that another embodiment of capacitive touch panels is as shown in Figure 1 described.
With reference to Fig. 1 and Fig. 3, the sensing unit (310) formed at touch area (TA) comprises the first touch sensible element (312) and the second touch sensible element (314).The first touch sensible element (312) as shown in Figure 3 and the second touch sensible element (314) are identical with the second touch sensible element (314) with the first touch sensible element (312) shown in Fig. 2 in fact, therefore represent the identical or similar portions as described in Fig. 2 with same drawing symbol, and omit relevant said elements and further illustrate.
Many route wiring is formed in the neighboring area (PA) surrounding touch area (TA), and many route wirings are connected to two ends of sensing unit (310) respectively, to extend to capacitive touch panels (300) both sides.
Such as, the first via is connected to the first end of the first touch sensible element (312) by connect up (1322), secondary route wiring (1324) is connected to the second end of the first touch sensible element (312), 3rd route wiring (1326) is connected to the first end of the second touch sensible element (314), and the 4th route wiring (1328) is connected to the second end being formed in neighboring area (PA) second touch sensible element (314).In the present example embodiment, the first via by connect up (1322), secondary route wiring (1324), the 3rd route wiring (1326) and the 4th route wiring (1328) along the first touch area (TA) first fringe region extend.
When observing capacitive touch panels (300) in Fig. 3, first fringe region of touch area (TA) is corresponding with the upper area of capacitive touch panels (300), and second fringe region of touch area (TA) is corresponding with the lower area of capacitive touch panels (300).
Route wiring is not formed in left field and the right side area of the illustrated capacitive touch panels of Fig. 3, therefore can reduce the frame of capacitive touch panels.
Fig. 4 is the structural drawing that capacitive induction loop is as shown in Figure 1 described; Fig. 5 is the working waveform figure that capacitive induction loop is as shown in Figure 4 described.
With reference to figure 4 and Fig. 5, according to one exemplary embodiment of the present invention, the capacitive sensing loop (400) of touch sensible element comprises reference voltage generating portion (410), voltage compare part (420), control section (430), timing portion (440), charge/discharge part (450) and combination switch (460), the electric capacity that capacitive sensing loop (400) are produced according to touch sensible element and human body by induction is to be discharged to the electric capacity that reference voltage responds to corresponding touch sensible element whole discharge time.
Such as, charge/discharge loop feature (450) continues to carry out N charge/discharge at predetermined period, and when electric capacity inputs from the touch sensible element being connected to combination switch (460), in predetermined period, time of origin is poor.The mistiming that timing portion (440) was accumulated during N the cycle of induction is to determine whether input capacitance.Along with Charge/Discharge Cycles is increased, when also being increased by the time needed for charging and discharging during touch sensible element senses electric capacity.
Reference voltage generating portion (410) comprises the first resistor (R1) being one another in series and connecting, second resistor (R2) and the 3rd resistor (R3), and generate the first reference voltage (refh) and the second reference voltage (frfl) to be supplied to voltage compare portion (20).In the present example embodiment, each first to the 3rd resistor (R1, R2 and R3) is variohm.The resistance value of variohm can according to change of program.Therefore, each first reference voltage (refh) and the second reference voltage (frfl) are also variable voltages.
When the power noise being applied to capacitive sensing loop noise that is a lot of or that provide from outside is a lot of time, by using routine change first reference voltage (refh) and the second reference voltage (frfl), to arrange reference voltage not by noise effect.
Especially, along with the touch sensible element forming inductance capacitance increases, noise is inhaled into because external environment condition, and capacitance sensitivity fields is reduced.But, when the difference between the first reference voltage (vrefh) and the second reference voltage (vfrfl) controls to and has minimum value, just more can reduce noise properties.
But when the difference between the first reference voltage (refh) and the second reference voltage (refl) is set to and has little value, the signal of induction result is strengthened noise ratio (SNR); But capacitive sensing signal reduces, therefore need the magnitude of voltage selecting suitable the first reference voltage (refh) and the second reference voltage (refl).
The voltage that voltage compare portion (420) comparison reference voltage generating unit (410) produces and the induced voltage corresponding with the first control signal (CS1) that external device (ED) (not shown) provides that touch sensible element provides.Such as, voltage compare portion (420) comprise the first voltage comparator (COM1) and the second voltage comparator (COM2).In the present example embodiment, the first control signal (CS1) enables or disables the first and second comparative voltage devices (COM1, COM2).Namely first control signal (CS1) of H grade enables the first and second comparative voltage devices (COM1, COM2), and first control signal (CS1) of L grade forbids the first and second comparative voltage devices (COM1, COM2).
Corresponding with the first control signal of H grade, the first voltage comparator (COM1) compares output first comparison signal (O_up) to the first reference voltage (refh) that reference voltage generating unit (10) generates with the induced voltage inputted from touch sensible element.When the signal voltage compared at the first voltage comparator (COM1) is more than or equal to the first reference voltage (refh), first comparison signal (O_up) generates has H grade, when the signal voltage compared at the first voltage comparator (COM1) is less than the first reference voltage (refh), generates and there is L grade.When exporting the first comparison signal (O_up) of H grade, in the scheduled delay at normal working time interval (interval that the second control signal (CS2) is H grade), the charge/discharge control signal that control control section (430) exports is from H change of rank to L grade.
Corresponding with the first control signal of H grade, the second voltage comparator (COM2) compares output second comparison signal (O_dn) to the second reference voltage (refl) that reference voltage generating unit (10) generates with the induced voltage inputted from touch sensible element.When the signal voltage compared at the second voltage comparator (COM2) is less than or equal to the second reference voltage (refl), second comparison signal (O_dn) generates has H grade, when the signal voltage compared at the second voltage comparator (COM2) is greater than the second reference voltage (refl), generates and there is L grade.When exporting the second comparison signal (O_dn) of H grade, in the scheduled delay at normal working time interval (the second control signal is the interval of H grade), the charge/discharge control signal (ctl) that control control section (430) exports is from L change of rank to H grade.
In the present example embodiment, each first and second voltage comparators (COM1, COM2) comprise the voltage comparator with delayed action.The voltage comparator with delayed action is also the comparer for having Schmidt trigger (Schmitttrigger), by using the voltage comparator with delayed action, when supply voltage noise is applied to capacitive sensing loop or ground voltage is applied to there, can prevent comparer tetchiness from reacting.When based on application semiconductor practical development to be applied to operate in the middle of loop time, signal can be improved to noise ratio (SNR) from supply voltage noise.
Control section (430) receives the first comparison signal (O_up) exported from the first voltage comparator (COM1), from the second comparison signal (O_dn) that the second voltage comparator (COM2) exports, and from the second control signal that external device (ED) provides, and control the operation of charge/discharge loop feature (450) and the operation of timing portion (440).Such as, control section (430) provides charge/discharge control signal (ctl) to charge/discharge loop feature (450) in order to the operation controlling charge/discharge loop feature (450).When the second control signal (CS2) is transformed into H grade from L grade, charge/discharge control signal (ctl) becomes H grade from L grade; And when the first comparison signal is converted into H grade from L grade, charge/discharge control signal (ctl) is converted to L grade from H grade.In addition, when the second comparison signal is converted into H grade from L grade, charge/discharge control signal (ctl) is converted into H grade from L grade, and when the first comparison signal is converted into H grade from L grade, charge/discharge control signal (ctl) is converted into L grade from H grade.Namely, after charge/discharge control signal (ctl) is converted into H grade by the second control signal, charge/discharge control signal (ctl) is converted into L grade by the first control signal, and then charge/discharge control signal (ctl) is converted into H grade by the second control signal.
Charge/discharge loop feature (450) is connected to control section (430) and combination switch (460) respectively, corresponding with charge/discharge control signal (ctl), the induced signal (signal_in) that charge/discharge loop feature (450) is inputted by combination switch (460) from the first reference voltage (refh) to the charging of the second reference voltage (refl) or from the second reference voltage (refl) to the electric discharge of the first reference voltage (refh).In the present example embodiment, respond the switch (SW) that charge/discharge control signal (ctl) carries out On/Off to be connected between the contact (VN) corresponding with induced signal and ground terminal.That is, when switch (SW) cuts out, charge/discharge loop feature (450) provides charging current (i1) to charge to touch sensible element based on the supply voltage of power supply voltage terminal for contact.When switch (SW) is opened, charge/discharge loop feature (450) is discharged by ground terminal with the discharge current (i2) of answering with touch sensible elements relative.
Combination switch (460) corresponds to the direction of the input and output of the 3rd control signal (CS3) the transformation induction signal provided from external device (ED).In the present example embodiment, the 3rd control signal (CS3) works and determines combination switch (460) signaling path.That is, combination switch (460) can set the path of the capacitive sensing signal exported from charge/discharge loop feature (450), and the bottom (or right part) of capacitive sensing signal from the top (or left part) of touch sensing element to touch sensing element is passed through.Or combination switch (460) can set the path of the capacitive sensing signal exported from charge/discharge loop feature (450), the top (or left part) of capacitive sensing signal from the bottom (or right part) of touch sensing element to touch sensing element is passed through.
The duration of charging corresponding with the 4th control signal (CS4) from external device (ED) of timing portion (440) induction charge/discharge loop feature (450) and discharge time.In addition, timing portion (440) responds to whole duration of charging and whole discharge time, and corresponds to induction result output induced signal.In the present example embodiment, the 4th control signal controls the operation of timing portion (440).Such as, in the interval at the first edge of H grade in the 4th control signal (CS4), timing portion (440) starts timing corresponding to the scheduled period of induced signal (signal), in the marginating compartment of the L grade produced after the marginating compartment of first H grade, stop the operation of timing portion (440), maintain the value of timing portion (440), and timing portion (440) works transmission measurement result.
Be in H level spacing in the second control signal, aforesaid operations continues repeatedly to carry out.The capacitance of each panel is confirmed as by the value of the 3rd control signal timing portion (440).
Initial startup starts from the output signal of charge/discharge loop feature (450), that is, from the ground connection grade of capacitive sensing signal.In the case, output signal has ratio first reference voltage (vrefh) and the also low lower value of the second reference voltage (vrefl).Second reference voltage (vrefl) is the voltage higher than the 0V of ground voltage GND.Such as, the second reference voltage (vrefl) can be set as about 300mV.Second reference voltage (vrefh) can be set as 1/2VDD to VDD-300mV.
Operation under the normal condition of capacitive sensing loop can be described, when output signal voltage is lower than vref, the output charge/discharge control signal of control section (430) is 0V, comparer (420) and control section (430) is operated to have in from the second reference voltage (vrefl) to the first reference voltage (vrefh) triangle the rate of rise that vertical.Simultaneously, when output signal voltage reaches the first reference voltage (vrefh), switch (SW) is connected to the lead-out terminal of control section (430), comparer (420) and control section (430) is operated to have in the triangles the descending slope that vertical.
The induced signal (signal) of charge/discharge loop feature (450) to being connected to the dull and stereotyped charging and discharging electric charge operation based on charging current (i1) and discharge current (i2) in touch sensible element, according to rise or decline can the waveform of rectilinear configuration be worked.
Fig. 6 is the schematic diagram that capacitive sensing is described by capacitive touch panels as shown in Figure 1; With reference to figure 6, multiple touch sensible arrangements of elements is on capacitive touch panels.The conductive material that touch sensible element has consistent resistance by patterning as indium oxide (ITO) or CNT (CNT) per unit square is formed.In the present example embodiment, touch sensible element is formed with single aspect.
Touch sensible element edge from left to right all has consistent resistor assembly (r) in direction, and has minimum stray capacitance (c) in air or actual ground.
Suppose, in f position, human body touch occurs, if along direction from left to right (namely, first induction direction) apply induced signal, produce signal delay effect 5* (r//c)+Cf, if along direction from right to left (namely, second induction direction) apply induced signal, produce signal delay effect 3* (r//c)+Cf.
Physical location on the touch panel that above-mentioned delay-time difference calculating touch can be utilized to produce.
Following Fig. 7 shows, in order to overview foregoing, when producing touch (Cf) in each position of a, b, c, d, e, f, g, h and i by human finger, and the lag of the induced signal in the first induction direction and the second induction direction.
Fig. 7 schematically illustrates detection signal responds to direction delay curve map along the first induction direction and second as shown in Figure 6.
With reference to figure 7, carry out from a to i with touch location, the induced signal delay time can increase in the first induction direction.Carry out from i to a with touch location, the induced signal delay time can reduce in the second induction direction.
Difference between the delay time of the first induction direction detection and the second induction direction detection delay time is corresponding with the physical location on each touch sensible element.
According to the first and second induction direction time lag effects do not show as shown in Figure 7 there is consistent vertical line slope, but its proterties is similar to vertical line shape, so represent by vertical line.
Fig. 8 a and Fig. 8 b is the schematic diagram that capacitive sensing signal path is described; Especially, Fig. 8 a shows to the capacitive sensing signal path that touch sensible member underside passes through on the upside of touch sensible element, and Fig. 8 b shows the capacitive sensing signal path passed through on the upside of from touch sensible member underside to touch sensible element.
With reference to figure 8a, induced signal is to the transmission of touch sensible member underside on the upside of touch sensible element, and transmission signal is exported by the downside of touch sensible element, thus makes the variable quantity of electric capacity sensed.
When the 3rd control signal is 0, the induced signal (Signal_out) exported from charge/discharge loop feature (450) is applied on the upside of touch sensible element by SW0 through PADL, and be applied to voltage compare part (420) by PADR and SW1 via touch sensible member underside by the signal of touch sensible element, in the case, the first induction path can be defined.
With reference to figure 8b, induced signal transmits on the upside of touch sensible element from touch sensible member underside, and transmission signal is exported by the upside of touch sensible element, thus makes the variable quantity of electric capacity sensed.
When the 3rd control signal is 1, the induced signal (Signal_out) exported from charge/discharge loop feature (450) is applied to touch sensible member underside by SW1 and PADR, and by the signal of touch sensible element by PADL and SW0 via being applied to voltage compare part (420) on the upside of touch sensible element, in the case, the second induction path can be defined.
In traditional field, capacitive sensing loop is connected to two ends of touch sensible element respectively.That is, due to being employed herein two capacitive sensing loops, the size of the silicon of semiconducter IC inside is wasted, in addition, because the bias measures between two loops cannot converge to a unified value.
But, according to the present invention, the flowing that path is responded in first flowing and second responding to path is opposite each other, by utilizing a capacitive sensing loop, path is answered by combination switch (460) Perceived control, to obtain influence value, thus error rate can be reduced due to semiconductor home loop spacing bias.
Fig. 9 is the structural drawing that capacitance touch induction installation is described according to another exemplary embodiment of the present invention.
With reference to figure 9, the capacitance touch induction installation of another exemplary embodiment of the present invention comprises timing controlled part (100), display panel (200), capacitive touch panels (500) and capacitive sensing loop (400).Timing controlled part (100) shown in Fig. 9, display panel (200) and capacitive sensing loop (400) and the timing controlled part (100) shown in Fig. 1, display panel (200) and capacitive sensing loop (400) are the same, represent with same symbol, and detailed.
Capacitive touch panels (500) can be arranged on display panel (200).Multiple sensing unit (510) is formed on capacitive touch panels (500).The first touch sensible element (512) that each sensing unit (510) comprises the tail comb shape shape formed with zig-zag fashion along first direction (D1) and the second touch sensible element (514) of tail comb shape shape formed with zig-zag fashion along first direction (D1).
Sensing unit (510) is formed along second direction (D2).In the present example embodiment, for convenience of description, 8 sensing units (510) have been shown in Fig. 9, and the number of sensing unit (510) can change.The region that sensing unit (510) is formed is defined as touch area (TA).
In the present example embodiment, each first touch sensible element (512) and the second touch sensible element (514) comprise main part and are connected to the afterbody of main part.Main part is that the wiring formed with serrate is defined, and afterbody is that the wiring formed with stripe-shaped is defined.When observing capacitive touch panels (500) in Fig. 9, the main part of the first touch sensible element (512) is arranged in the upper area of capacitive touch panels (500), and the main part of the second touch sensible element (514) is arranged in the lower area of capacitive touch panels (500).
In the present example embodiment, extending direction and the tail comb shape afterbody extending direction corresponding with the second touch sensible element (514) of corresponding with the first touch sensible element (512) tail comb shape afterbody are contrary.In addition, when observing capacitive touch panels (500) in Fig. 9, the afterbody of the first touch sensible element (512) is arranged in the lower area of capacitive touch panels (500), and the afterbody of the second touch sensible element (514) is arranged in the upper area of capacitive touch panels (500).
In the present example embodiment, the sensing unit of odd positions and the sensing unit of even number position are mutually symmetrical.Namely, when observing capacitive touch panels (500) in Fig. 9, in the sensing unit of odd positions, the main part of the first touch sensible element (512) is arranged in upper area, and the main part of the second touch sensible element (514) is arranged in lower area.In addition, when observing capacitive touch panels (500) in Fig. 9, in the sensing unit of even number position, the main part of the first touch sensible element (512) is arranged in lower area, and the main part of the second touch sensible element (514) is arranged in upper area.
When observing capacitive touch panels (500) in plane angle, sensing unit (510) can with the parallel formation of capacitive touch panels (500) vertical direction, or sensing unit (510) can be formed with capacitive touch panels (500) horizontal direction parallel.The conductive material that sensing unit (510) has consistent resistance by patterning as indium oxide (ITO) or CNT (CNT) per unit square is formed.In the present example embodiment, touch sensing unit (510) is formed with single aspect.
Two ends of each first touch sensible element (512) are connected to capacitive sensing loop (400) respectively to receive from capacitive sensing loop (400) transmitting and Received signal strength is supplied to capacitive sensing loop (400) as continuous current.In addition, two ends of each second touch sensible element (514) are connected to capacitive sensing loop (400) respectively to receive from capacitive sensing loop (400) transmitting and Received signal strength is supplied to capacitive sensing loop (400) as continuous current.
Such as, first touch sensible element (512) of the first sensing unit (510) by the first terminal (such as, main part) receive from capacitive sensing loop (400) first send signal, and provide the first Received signal strength by the second terminal (such as, afterbody) to capacitive sensing loop (400).Second touch sensible element (514) of the first sensing unit (510) by the first terminal (such as, afterbody) receive from capacitive sensing loop (400) second send signal, and provide the second Received signal strength by the second terminal (such as, main part) to capacitive sensing loop (400).
Figure 10 is the structural drawing that capacitance touch induction installation is described according to another exemplary embodiment of the present invention.
With reference to Figure 10, comprise timing controlled part (100), display panel (200), capacitive touch panels (600) and capacitive sensing loop (400) according to the capacitance touch induction installation of another exemplary embodiment of the present invention.Timing controlled part (100) shown in Figure 10, display panel (200) and capacitive sensing loop (400) and the timing controlled part (100) shown in Fig. 1, display panel (200) and capacitive sensing loop (400) are the same, therefore represent with same symbol, and detailed.
Capacitive touch panels (600) can be arranged on display panel (200).Multiple sensing unit (610) is formed on capacitive touch panels (600).The first touch sensible element (612) that each sensing unit (610) comprises the tail comb shape shape formed with zig-zag fashion along first direction (D1) and the second touch sensible element (614) of tail comb shape shape formed with zig-zag fashion along first direction (D1).Sensing unit (510) is formed along second direction (D2).In the present example embodiment, for convenience of description, 8 sensing units (610) have been shown in Fig. 9, and the number of sensing unit (610) can change.The region that sensing unit (610) is formed is defined as touch area (TA).
In the present example embodiment, each first touch sensible element (612) and the second touch sensible element (614) comprise main part and are connected to the afterbody of main part.Main part is that the wiring formed with serrate is defined, and afterbody is that the wiring formed with stripe-shaped is defined.When observing capacitive touch panels (600) in Figure 10, the main part of the first touch sensible element (612) is arranged in the upper area of capacitive touch panels (600), and the main part of the second touch sensible element (614) is arranged in the lower area of capacitive touch panels (600).
In the present example embodiment, extending direction and the tail comb shape afterbody extending direction corresponding with the second touch sensible element (614) of corresponding with the first touch sensible element (612) tail comb shape afterbody are contrary.In addition, when observing capacitive touch panels (600) in Figure 10, the afterbody of the first touch sensible element (612) is arranged in the lower area of capacitive touch panels (600), and the afterbody of the second touch sensible element (614) is arranged in the upper area of capacitive touch panels (600).
In the present example embodiment, the first touch sensible element (612) arrangement be arranged in sensing unit (610) is in fact mutually the same, and the arrangement of the second touch sensible element (614) is also mutually the same.Namely, when observing capacitive touch panels (600) in Figure 10, in all sensing units (610), the main part of the first touch sensible element (612) is arranged in the upper area of capacitive touch panels (600), and the main part of the second touch sensible element (614) is arranged in the lower area of capacitive touch panels (600).
When observing capacitive touch panels (600) in plane angle, sensing unit (610) can with the parallel formation of capacitive touch panels (600) vertical direction, or sensing unit (610) can be formed with capacitive touch panels (600) horizontal direction parallel.The conductive material that sensing unit (610) has consistent resistance by patterning as indium oxide (ITO) or CNT (CNT) per unit square is formed.In the present example embodiment, touch sensing unit (610) is formed with single aspect.
Two ends of each first touch sensible element (612) are connected to capacitive sensing loop (400) respectively to receive from capacitive sensing loop (400) transmitting and Received signal strength is supplied to capacitive sensing loop (400) as continuous current.In addition, two ends of each second touch sensible element (614) are connected to capacitive sensing loop (400) respectively to receive from capacitive sensing loop (400) transmitting and Received signal strength is supplied to capacitive sensing loop (400) as continuous current.
Such as, first touch sensible element (612) of the first sensing unit (610) by the first terminal (such as, main part) receive from capacitive sensing loop (400) first send signal, and provide the first Received signal strength by the second terminal (such as, afterbody) to capacitive sensing loop (400).Second touch sensible element (614) of the first sensing unit (610) by the first terminal (such as, afterbody) receive from capacitive sensing loop (400) second send signal, and provide the second Received signal strength by the second terminal (such as, main part) to capacitive sensing loop (400).
Be more than the explanation that reference example is done, the professional being not limited to the sector, in the scope that claim is recorded, is no more than thought and the region of this invention, can carry out diversified modifications and changes to the present invention.
Claims (18)
1. a capacitive touch panels, comprising:
First touch sensible element, extend in parallel along first direction in touch area, first touch sensible element comprise the core from the first fringe region of touch area to touch area the first width and from touch area core to the second width of touch area second fringe region, the first width and narrower than the second width; And
Second touch sensible element, extend in parallel along first direction in touch area, the first fringe region that the second touch sensible element comprises touch area is to the first width of the second width of the core of touch area and the second fringe region from the core of touch area to touch area.
2. capacitive touch panels, wherein the first touch sensible element and the second touch sensible element defining sensing unit as claimed in claim 1,
The arrangement being wherein arranged in the first and second touch sensible elements of sensing unit adjacent one another are is mutually the same.
3. capacitive touch panels, wherein the first touch sensible element and the second touch sensible element defining sensing unit as claimed in claim 1,
The arrangement being wherein arranged in the first and second touch sensible elements of sensing unit adjacent one another are is mutually symmetrical.
4. capacitive touch panels as claimed in claim 1, also comprises:
The first via, by connecting up, is formed in the neighboring area of encirclement touch area to be connected to the first end of the first touch sensible element;
Secondary route connects up, and is formed in the neighboring area of encirclement touch area to be connected to the second end of the first touch sensible element;
3rd route wiring, is formed in the neighboring area of encirclement touch area to be connected to the first end of the second touch sensible element; And
4th route wiring, is formed in the neighboring area of encirclement touch area to be connected to the second end of the second touch sensible element.
5. capacitive touch panels, wherein the first and second touch sensible elements as claimed in claim 4, and above-mentioned first to fourth route wiring is formed in same layer.
6. capacitive touch panels as claimed in claim 1, wherein the first touch sensible element and the second touch sensible element have a main part and one to be connected to the afterbody of main part,
Wherein main part has writing board shape.
7. capacitive touch panels as claimed in claim 6, also comprises: many routes wirings, is formed in neighboring area around touch area to be connected to two respective ends of the first and second touch sensible elements,
Wherein the width that connects up than each route of the second width is wide.
8. capacitive touch panels as claimed in claim 1, wherein each first touch sensible element and the second touch sensible element have a main part and one to be connected to the afterbody of main part,
Wherein main body section wiring is formed with serrate, and
Wherein afterbody wiring is formed with stripe-shaped.
9. capacitive touch panels as claimed in claim 8, the wiring width wherein formed with serrate equals the wiring width formed with stripe-shaped.
10. capacitive touch panels as claimed in claim 1, wherein the first and second touch sensible elements each have tail comb shape shape, and
First touch sensible element and the second touch sensible element arrange bar-shaped to define with serrate.
11. capacitive touch panels as claimed in claim 1, the spacing wherein between the first touch sensible element and the second touch sensible element is consistent.
12. capacitive touch panels as claimed in claim 1, the length of the first wherein corresponding with the first width touch sensible element equals the length of the second touch sensible element corresponding with the second width.
13. capacitive touch panels as claimed in claim 1, the length of the first wherein corresponding with the second width touch sensible element equals the length of the second touch sensible element corresponding with the first width.
14. capacitive touch panels, wherein the first sides aligned parallel of first direction and capacitive touch panels as claimed in claim 1.
15. 1 kinds of capacitance touch induction installations, comprising:
Capacitive touch panels, comprising:
First touch sensible element, extend in parallel along first direction in touch area, first touch sensible element comprise the core from the first fringe region of touch area to touch area the first width and from touch area core to the second width of touch area second fringe region, the first width and narrower than the second width; And
Second touch sensible element, extend in parallel along first direction in touch area, the first fringe region that the second touch sensible element comprises touch area is to the first width of the second width of the core of touch area and the second fringe region from the core of touch area to touch area; And
Capacitive induction loop, is connected to the first and second touch sensible elements respectively and comes touch sensitive position with the capacitance variations of the capacitance variations by responding to the first touch sensible element or the second touch sensible element.
16. capacitance touch induction installations as claimed in claim 15, wherein capacitive induction loop is connected to two ends of the first touch sensible element and two ends of the second touch sensible element.
17. capacitance touch induction installations as claimed in claim 15, wherein capacitive induction loop is by the first touch sensible element senses effective touch location corresponding with the first width, and by the second touch sensible element senses effective touch location corresponding with the first width.
18. capacitance touch induction installations as claimed in claim 15, wherein capacitive touch panels also comprises many routes wirings that the neighboring area be formed in around touch area is connected to two ends of the first touch sensible element and two ends of the second touch sensible element
Wherein capacitive induction loop is connected to the first and second touch sensible elements by above-mentioned route wiring, and
Wherein the width of the second width route wiring more above-mentioned than each is wide.
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| KR10-2014-0106202 | 2014-08-14 | ||
| KR20140106202A KR101493915B1 (en) | 2014-08-14 | 2014-08-14 | Capacitance touch panel and capacitance touch sensing device having the same |
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| TWI648667B (en) * | 2017-06-01 | 2019-01-21 | 南韓商樂金顯示科技股份有限公司 | Touch display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103246377A (en) * | 2012-02-01 | 2013-08-14 | 安浙触控科技有限公司 | Improved touch panel structure |
| CN203241970U (en) * | 2013-04-03 | 2013-10-16 | 敦泰科技有限公司 | Conducting layer structure and self capacitance touch screen using same |
| CN103472613A (en) * | 2013-09-13 | 2013-12-25 | 敦泰科技有限公司 | Capacitive touch display device |
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| KR100915655B1 (en) * | 2007-07-25 | 2009-09-04 | 에이디반도체(주) | Touch screen using capacitance sensor |
| KR101106655B1 (en) * | 2009-01-12 | 2012-01-18 | (주)미래디피 | Capacitive touch panel |
| KR20100118041A (en) * | 2009-04-27 | 2010-11-04 | 위순임 | Touchscreen device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103246377A (en) * | 2012-02-01 | 2013-08-14 | 安浙触控科技有限公司 | Improved touch panel structure |
| CN203241970U (en) * | 2013-04-03 | 2013-10-16 | 敦泰科技有限公司 | Conducting layer structure and self capacitance touch screen using same |
| CN103472613A (en) * | 2013-09-13 | 2013-12-25 | 敦泰科技有限公司 | Capacitive touch display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI648667B (en) * | 2017-06-01 | 2019-01-21 | 南韓商樂金顯示科技股份有限公司 | Touch display device |
| US10551979B2 (en) | 2017-06-01 | 2020-02-04 | Lg Display Co., Ltd. | Touch display device |
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