CN105549801B - A kind of capacitance touch screen and its duallayered electrode structure - Google Patents

Abstract

The invention discloses a kind of duallayered electrode structures of capacitance touch screen, comprising: induction electrode layer, including multiple first sub-electrode units, each first sub-electrode unit include a plurality of first electrode structure extended in a first direction；Drive electrode layer is oppositely arranged with induction electrode layer, including multiple second sub electrode units, and each second sub electrode unit includes a plurality of second electrode structure extended in a first direction；Each first sub-electrode unit and second sub electrode unit respectively pass through a lead-out wire and are connected to driving circuit, and are electrically connected with overlap joint line between the adjacent two second electrode structure between the adjacent two first electrode structure in each first sub-electrode unit, in each second sub electrode unit.The invention also discloses a kind of capacitance touch screens.The present invention substantially increases the touch accuracy of capacitance touch screen, can effectively improve the reliability of product, and the thickness of electrode structure and touch screen is thinned, and reduces manufacture difficulty and manufacturing cost, realizes roll-to-roll processing procedure.

Description

A kind of capacitance touch screen and its duallayered electrode structure

Technical field

The present invention relates to technical field of touch control more particularly to a kind of capacitance touch screens and its duallayered electrode structure.

Background technique

Conductive film not only has a high conductivity, but also has good translucency, is with a wide range of applications, at present byFunction is applied in liquid crystal display, touch panel, electromagnetic wave proof, the transparent electrode transparent surface heater of solar battery and softIn the fields such as property luminescent device.

In touch screen technical field, sensing element of the transparent conductive film usually as input signals such as induction touches.OneAs, transparent conductive film includes transparent substrates and the conductive layer in transparent substrates.Currently, ITO (Indium TinOxides, tin indium oxide) be conductive layer in transparent conductive film main material.

However, indium is a kind of metal material of valuableness, therefore the material using ITO as conductive layer largely increasesThe cost of touch screen.In addition, ITO conductive layer is in patterning process, need to the positive ito film good to plated film be etched, withITO pattern is formed, not only complex process, but also in this process, a large amount of ito film is etched, your a large amount of gold causedBelong to waste and pollution.

Therefore, touch technology Metal-Mesh-Sensor (metal grill/metalolic network sensor) of new generation progresses intoThe people visual field.Metal-Mesh touch technology is to produce metal fine in PET base material by series of process to construct electricityThe technology of pole structure, it can largely be thinned the thickness of touch screen, also reduce material and process costs.

But either ITO electrode structure in electrode fabrication or was used still based on the electrode structure of Metal-MeshCheng Zhong, if certain a part in latticed electrode fracture occurs and will cause the touch function failure in the region, touch-control spiritSensitivity substantially reduces, and touch screen damages, and seriously affects operating experience.

Summary of the invention

In view of the shortcomings of the prior art, the present invention provides a kind of capacitance touch screen and its duallayered electrode structures.

In order to achieve the above purpose, present invention employs the following technical solutions:

A kind of duallayered electrode structure of capacitance touch screen, comprising:

Induction electrode layer, including multiple first sub-electrode units, each first sub-electrode unit include a plurality of alongThe first electrode structure that one direction extends；

Drive electrode layer is oppositely arranged with the induction electrode layer, including multiple second sub electrode units, and each describedTwo sub-electrode units include a plurality of second electrode structure extended along the first direction；

Each first sub-electrode unit and the second sub electrode unit respectively pass through a lead-out wire and are connected to drivingCircuit, and between the adjacent two first electrode structure in each first sub-electrode unit, each described secondOverlap joint line is electrically connected between the adjacent two second electrode structure in sub-electrode unit.

Further, the overlap joint line is a plurality of, is arranged at intervals on adjacent in each first sub-electrode unitBetween adjacent two second electrode structure between two first electrode structures and in each second sub electrode unit.

Further, each first sub-electrode unit, described in adjacent two in the second sub electrode unitOverlapping the spacing between line is 5~20mm.

Further, the spacing between the induction electrode layer and the drive electrode layer is not more than 150 μm.

Further, between adjacent two the first sub-electrode units, the adjacent two second sub electrode listsThe distance between member is 3~100 μm.

Further, between the adjacent two first electrode structure in each first sub-electrode unit, Mei GesuoStating the spacing between the adjacent two second electrode structure in second sub electrode unit is 80-250 μm.

Further, the first electrode structure and/or the second electrode structure are straight line or wave.

Alternatively, the first electrode structure and/or the second electrode structure are closed pattern.

Further, the induction electrode layer and the drive electrode layer are metal.

Another object of the present invention is to provide a kind of capacitance touch screens, including substrate layer and above-mentioned two-layer electrode knotStructure, the induction electrode layer of the duallayered electrode structure and the drive electrode layer are separately positioned on the two sides of the substrate layerOn.

The present invention will be incuded by the way that induction electrode layer and drive electrode layer are separately positioned on two faces on substrate layerEach of electrode layer the first sub-electrode unit is arranged to have a plurality of first electrode structure, by the second son of each of drive electrode layerElectrode unit is arranged to have a plurality of second electrode structure, and the touch accuracy of electrode structure can be improved；Meanwhile each firstAdjacent two second between adjacent two first electrode structure in sub-electrode unit, in each second sub electrode unitOverlap joint line is electrically connected between electrode structure, it can be to avoid induction electrode layer and drive electrode layer during making or usingThe phenomenon that generating electrode damage, touch-control failure caused by grid is broken, improves the reliability of product, and can be further by substrateLayer is designed to PET film, and the thickness of electrode structure and touch screen is thinned, and reduces manufacture difficulty and manufacturing cost, realizes roll-to-roll(roll to roll) processing procedure.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the induction electrode layer of the embodiment of the present invention 1.

Fig. 2 is the structural schematic diagram of the drive electrode layer of the embodiment of the present invention 1.

Fig. 3 is the structural schematic diagram of another induction electrode layer of the embodiment of the present invention 1.

Fig. 4 is a kind of structural schematic diagram of induction electrode layer of the embodiment of the present invention 2.

Fig. 5 is a kind of structural schematic diagram of induction electrode layer of the embodiment of the present invention 3.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, rightThe present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have toIt is of the invention in limiting.

Embodiment 1

Refering to fig. 1 and Fig. 2, the duallayered electrode structure of the capacitance touch screen of the embodiment of the present invention, including the sense being oppositely arrangedElectrode layer 10 and drive electrode layer 20 are answered, induction electrode layer 10 includes multiple first sub-electrode units 100, each first sub-electrodeUnit 100 is formed as fascicular texture, including a plurality of first electrode structure 101 extended in a first direction；Drive electrode layer 20 is wrappedMultiple second sub electrode units 200 are included, each second sub electrode unit 200 is again formed as fascicular texture, including a plurality of along firstThe second electrode structure 201 that direction extends；Each first sub-electrode unit 100 and second sub electrode unit 200 respectively pass through oneLead-out wire 1 is connected to driving circuit, and the adjacent two first electrode structure 101 in each first sub-electrode unit 100 itBetween, overlap joint line 2 is electrically connected between the adjacent two second electrode structure 201 in each second sub electrode unit 200.SenseIt answers the electrode line width on electrode layer 10 and drive electrode layer 20 superfine, about 1-10 μm, can be reduced to avoid being observed visuallyThe generation of Moire fringe.

The preferred induction electrode layer 10 of the present embodiment and drive electrode layer 20 are metal structure, such as copper, silver.By will be doubleThe induction electrode layer 10 and drive electrode layer 20 of layer electrode structure are separately positioned on the two sides of the substrate layer of single-layer PET film compositionOn, induction electrode layer 10 and drive electrode layer 20 intersect to form node capacitor in the longitudinal direction, and preferably on induction electrode layer 10Pattern of the pattern of one sub-electrode unit 100 and the second sub electrode unit 200 in drive electrode layer 20 on substrate layer is completeIt is overlapped, to reduce Moire fringe.Compared with traditional two-sided double-deck touch screen, such capacitance touch screen can be made thinner, canThe linearity is excellent while to realize multiple point touching, and interference free performance is more preferable, easy to operate.Also compare on its manufacturing processRelatively simple, flexibility is more preferable, can be convenient the Simple process for realizing ROLL TO ROLL, occupies on manufacturing process very big excellentGesture is more advantageous to the increasingly automated production of product.It is understood that due to having overlap joint line 2, the duallayered electrode structureIt is also applicable on using glass as the electrode structure of substrate layer, can also apply in the electrode structure made of ITO material, useTo improve the reliability touched.

All very carefully due to first electrode structure 101, second electrode structure 201 and the overlap joint line 2 in electrode structure, such asFruit a netted electrode structure first electrode structure 101 therein, second electrode structure 201 or overlap joint line in the fabrication process2 are thrust, and entire electrode structure can become defective products, distinguish on the induction electrode layer 10 and drive electrode layer 20 of the present embodimentIt is designed to be made of multiple first sub-electrode units 100 and second sub electrode unit 200,100 He of preferably the first sub-electrode unitThe quantity of second sub electrode unit 200 between 10~50, meanwhile, each first sub-electrode unit 100 and second sub electrode listMember 200 is made of the first electrode structure 101 of identical quantity and second electrode structure 201 respectively, in this way, by by first electrodeStructure 101 and second electrode structure 201 are made very thin, and spacing between the two is made very small, induction electrode layer 10 and driving electricityLayer 20 naked eyes in pole are almost invisible, effectively reduce Moire fringe, can be perfectly suitable for the all-metal capacitor of 2K or moreTouch screen.

The present embodiment it is further preferred that overlap joint line 2 be it is a plurality of, using with first electrode structure 101, second electrode structure201 identical conductive materials are made, the adjacent two first electrode knot being arranged at intervals in each first sub-electrode unit 100Between adjacent two second electrode structure 201 between structure 101 and in each second sub electrode unit 200.When one of themThe overlap joint line 2 at position is thrust in the fabrication process, or dust entrance makes two adjacent first electrode knots in useWhen 201 short circuit of structure 101 or second electrode structure, the overlap joint line 2 at other positions can still realize adjacent first electrode structure 101 or theThe conducting of two electrode structures 201, avoids the occurrence of touch-control failure region, compared with traditional touch screen, greatly improves touch-control essenceDegree and reliability.

As one such preferred embodiment, in the present embodiment, each the 100, second son of first sub-electrode unitIt is 5~20mm, induction electrode layer 10 and drive electrode layer that adjacent two in electrode unit 200, which overlap the spacing between line 2,Spacing between 20 is not more than 150 μm, between two adjacent the first sub-electrode units 100, two adjacent second sub electrodesThe distance between unit 200 is 3~100 μm, the adjacent two first electrode structure in each first sub-electrode unit 100The spacing between adjacent two second electrode structure 201 between 101, in each second sub electrode unit 200 is 80-250 μm。

In Fig. 1, first electrode structure 101 and second electrode structure 201 are rectilinear form, two adjacent first electrodesStructure 101 or second electrode structure 201 are parallel to each other.In Fig. 3, first electrode structure 101 and second electrode structure 201 are waveUnrestrained wire shaped is connected with more overlap joint lines 2 between two adjacent waves.

The present embodiment will be felt by the way that induction electrode layer and drive electrode layer are separately positioned on two faces on substrate layerEach of electrode layer the first sub-electrode unit is answered to be arranged to that there is a plurality of first electrode structure, by each of drive electrode layer secondSub-electrode unit is arranged to have a plurality of second electrode structure, by single side substrate layer duallayered electrode structure respectively with independent driveDynamic and independent sensing forms mutual capacitance, improves the touch accuracy of electrode structure；Meanwhile in each first sub-electrode unitAdjacent two first electrode structure between, between the adjacent two second electrode structure in each second sub electrode unitIt is electrically connected with overlap joint line, induction electrode layer is efficiently avoided and drive electrode layer generates grid during making or usingThe phenomenon that electrode damage, touch-control failure caused by being broken, the reliability of product is improved, and can further be designed to substrate layerThe thickness of electrode structure and touch screen is thinned in PET film, reduces manufacture difficulty and manufacturing cost, realizes roll-to-roll (roll toRoll) processing procedure.

Embodiment 2

As shown in figure 4, first electrode structure 101 and second electrode structure 201 are argyle design splicing in the present embodimentIt forms, each first sub-electrode unit 100 and each second sub electrode unit 200 are respectively by the of several articles of argyle designs splicingsThe assembly of 201 groups of fasciculations of one electrode structure 101 and second electrode structure is adjacent in each first sub-electrode unit 100Several spaced overlap joint lines 2 are connected between two first electrode structures 101.Phase in each second sub electrode unit 200Several spaced overlap joint lines 2 are also connected between two adjacent second electrode structures 201.The two-layer electrode knot of the present embodimentStructure can equally play raising and touch reliability, reduce Moire fringe, simplify production technology, reduce manufacture difficulty and manufacturing costEffect.It is understood that in other embodiments, first electrode structure 101 and second electrode structure 201 can also be setThe construction for counting into other polygon patterns is connected between corresponding two electrode structures using corresponding overlap joint line 2.

Embodiment 3

As shown in figure 5, first electrode structure 101 and second electrode structure 201 are that several are closed in the present embodimentPattern splicing forms a long closed pattern, and the closed pattern in first electrode structure 101 and second electrode structure 201 can be withIt is various irregular shapes, if camber line is surrounded with broken line, camber line and camber line surrounds, broken line and broken line surround, makes every firstElectrode structure 101 and second electrode structure 201 form reticular structure.Each first sub-electrode unit 100 and each second son electricityPole unit 200 is respectively by the assembly of 201 groups of fasciculations of several first electrode structures 101 and second electrode structure, oftenSeveral spaced overlap joint lines are connected in a first sub-electrode unit 100 between two adjacent first electrode structures 1012, it is also connected between two adjacent second electrode structures 201 in each second sub electrode unit 200 several spacedOverlap line 2.

It is understood that only listing several preferred embodiments, in other embodiments, Mei Ge above101 structure of first electrode structure in one sub-electrode unit 100 might not be identical, may be set to be different patterns；Often201 structure of second electrode structure in a second sub electrode unit 200 might not be identical, may be set to be different figuresCase.

The above is only the specific embodiment of the application, it is noted that for the ordinary skill people of the artFor member, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications are also answeredIt is considered as the protection scope of the application.

Claims (7)

1. a kind of duallayered electrode structure of capacitance touch screen characterized by comprising

Induction electrode layer (10), including multiple first sub-electrode units (100), each first sub-electrode unit (100) packetInclude a plurality of first electrode structure (101) extended in a first direction；

Drive electrode layer (20) is oppositely arranged with the induction electrode layer (10), including multiple second sub electrode units (200),Each second sub electrode unit (200) includes a plurality of second electrode structure (201) extended along the first direction；

Each first sub-electrode unit (100) and the second sub electrode unit (200) are respectively connected by a lead-out wire (1)It is connected to driving circuit, and the adjacent two first electrode structure (101) in each first sub-electrode unit (100)Between, be electrically connected between the adjacent two second electrode structure (201) in each second sub electrode unit (200)It is connected to overlap joint line (2)；

Each first sub-electrode unit (100), each second sub electrode unit (200) are respectively by several diamond-shaped patternsThe first electrode structure (101) of case splicing, the second electrode structure (201) organize the assembly of fasciculation；

The overlap joint line (2) be it is a plurality of, be arranged at intervals on adjacent two in each first sub-electrode unit (100) theAdjacent two second electrode structure between one electrode structure (101) and in each second sub electrode unit (200)(201) between, between the first electrode structure (101) of adjacent two, the adjacent two second electrode structures (201)Between two overlap joints the distance between line (2) be greater than argyle design in the length of the extending direction of the assembly of pencil.

2. the duallayered electrode structure of capacitance touch screen according to claim 1, which is characterized in that each first son electricitySpacing between adjacent two in pole unit (100), the second sub electrode unit (200) overlap joint line (2) is 5~20mm。

3. the duallayered electrode structure of capacitance touch screen according to claim 1, which is characterized in that the induction electrode layer(10) spacing between the drive electrode layer (20) is not more than 150 μm.

4. the duallayered electrode structure of capacitance touch screen according to claim 1, which is characterized in that adjacent two describedBetween one sub-electrode unit (100), the distance between adjacent two second sub electrode units (200) be 3~100 μm。

5. the duallayered electrode structure of capacitance touch screen according to claim 1, which is characterized in that each first son electricityBetween adjacent two first electrode structure (101) in pole unit (100), in each second sub electrode unit (200)Adjacent two second electrode structure (201) between spacing be 80-250 μm.

6. the duallayered electrode structure of -5 any capacitance touch screens according to claim 1, which is characterized in that the induced electricityPole layer (10) and the drive electrode layer (20) are metal.

7. a kind of capacitance touch screen, which is characterized in that including any two-layer electrode knot of substrate layer and claim 1-6Structure, the induction electrode layer (10) of the duallayered electrode structure and the drive electrode layer (20) are separately positioned on the substrateOn the two sides of layer.