CN207182944U - Transparent conducting film and touch screen - Google Patents

Abstract

A kind of transparent conducting film is the utility model is related to, the first hard conating and/or the second hard conating contain multiple particle clusters, and particle clusters are agglomerated into by multiple nano-particles, and the particle diameter of nano-particle is 10~50nm.Particle clusters make the surface of the first metal layer and/or second metal layer form multiple projections.Therefore, above-mentioned transparent conducting film resist blocking and that is enable.Particle clusters are additionally, since to be agglomerated into by multiple nano-particles.Therefore, need not be accurately controlled for the size of single nano-particle.When forming particle clusters, it need to only pass through the quantity for the nano-particle for controlling reunion, you can the projection met the size requirements.As can be seen here, when preparing above-mentioned transparent conducting film, both do not have to be accurately controlled the size of nano-particle, screened without the nano-particle to obtaining, so as to simplification of flowsheet, and then lift processing efficiency.In addition, the utility model also provides a kind of touch screen.

Description

Transparent conducting film and touch screen

Technical field

Capacitance type touch control screen technical field is the utility model is related to, more particularly to a kind of transparent conducting film and touch-control Screen.

Background technology

Transparent conducting film is the core parts of capacitance type touch control screen.With the rapid development of intelligent terminal, to transparent The demand of conductive membrane is also increasingly to increase.Transparent conducting film generally comprises base material and is arranged at the hard of base material both sides Coating, conductive layer and metal level.At present, because amorphism thin polymer film is compared with crystalline polymer film, have two-fold Penetrate the advantages of rate is less and uniform, therefore the base material that most of transparent conductive film is formed using armorphous polymer thin film.

Amorphism thin polymer film is more fragile than crystalline polymer film, and its surface is easier to sustain damage.Crimping When transparent conducting film is tubular, the metal level that can have adjacent transparent conductive film produces adhesion and crimping each other The problem of.Therefore, occur adding particle in hard conating, so that layer on surface of metal forms the transparent conducting film of projection. Projection can make adjacent metal level form point contact, so as to avoid sticking together and crimp.

In existing conducting film, the particle diameter of particle is generally micron order, and individual particle forms a projection.Due to for The size (height) of projection requires.Therefore, also need to carry out strict control to the size of each particle when particle is prefabricated System, so that the projection that particle ultimately forms is met the size requirements.Moreover, also need to screen for the particle prepared, and The particle for not meeting size requirement is rejected.So, in the preparation process of conducting film, it is necessary to carry out the size Control of particle with And follow-up particle screen selecting step, therefore flow is added, so as to cause the processing efficiency of conducting film not high.

Utility model content

Based on this, it is necessary to not high in processing efficiency for the existing transparent conducting film with resist blocking and that function A kind of problem, there is provided transparent conducting film and touch screen that can effectively lift processing efficiency.

A kind of transparent conducting film, including：

Base material, including the first surface and second surface being oppositely arranged；

It is sequentially formed in the first hard conating, the first transparency conducting layer and the first metal layer of the first surface；

It is sequentially formed in the second hard conating, the second transparency conducting layer and second metal layer of the second surface；

First hard conating and/or second hard conating contain multiple particle clusters, with the first metal layer And/or the surface of the second metal layer forms multiple projections, the particle clusters are agglomerated into by multiple nano-particles, and institute The particle diameter for stating nano-particle is 10~50nm.

Because particle clusters are agglomerated into by multiple nano-particles.Therefore, need not enter for the size of single nano-particle Row is accurately controlled, as long as making its particle diameter be located in the range of 10~50nm.When forming particle clusters, control only need to be passed through The quantity of the nano-particle of reunion, you can the projection met the size requirements.As can be seen here, above-mentioned transparent conductivity is being prepared During film, both do not have to be accurately controlled the size of nano-particle, screened without the nano-particle to obtaining, from And can simplification of flowsheet, and then lifted processing efficiency.

Further, since particle clusters are agglomerated into by multiple nano-particles, therefore particle clusters can not form smooth surface. Therefore, particle clusters are relative to single micron-sized particle, its surface roughness increase, so as to adhesive force increase.

Further, multiple nano-particles are difficult to avoid that meeting when being agglomerated into particle clusters between adjacent nano-particle Gap be present.Therefore, for particle clusters compared with single micron particles, its inside has " hollow-core construction ", therefore to the screening of light Keep off declines.That is, include the light transmittance increase of the first hard conating and/or the second hard conating of particle clusters, from And it can effectively improve the optical effect of transparent conducting film.

In one of the embodiments, the base material is polycyclic alkene or makrolon or polyethylene terephthalate Film.

The two kinds of film can meet the requirement to the birefringence and its deviation of base material, and be easy to obtain.Cause This, can advantageously reduce the cost of transparent conducting film.

In one of the embodiments, the raised distribution density is 100~3000/mm²。

It when raised distribution density is excessive, can cause that the haze value of transparent conducting film is excessive, light transmission rate reduces, enter And have a strong impact on the outward appearance and optical effect of transparent conducting film.And if raised distribution density is too small, then resist blocking and that Effect is limited.In above-mentioned roughness and density range, transparent conducting film can preferably take into account resist blocking and that and optical effect.

In one of the embodiments, the particle clusters and the material of first hard conating and second hard conating It is identical.

That is, particle clusters and the first hard conating and the optical parametric of the second hard conating (being collectively referred to as hard conating below) It is identical.Therefore, impacted smaller, particle clusters and hard conating are propagated in particle clusters and the linkage interface of hard conating, light Closer is an entirety.During when light through the hard conating containing particle clusters, distortion caused by its round is smaller.Cause This, transparent conducting film reach resist blocking and that, purpose that resistance to compression connects simultaneously, moreover it is possible to avoid its optical property by unfavorable shadow Ring.

In one of the embodiments, the material of the particle clusters is silica, organosilicon polymer, acrylic compounds Polymer or styrene polymer.

Above material has the advantage that translucency is good, is easily obtained, can be before performance requirement is met for particle clusters Putting reduces cost.

In one of the embodiments, along perpendicular to the first metal layer and/or the second metal layer surface On direction, the multiple raised height is 0.1~0.5 μm.

Raised height is higher, then resist blocking and that effect is better.But with the rise of height, the size phase of particle clusters In requisition for increase, so as to cause the haze value of transparent conducting film also to increase therewith, and will be tight after reaching to a certain degree Ghost image rings the optical effect of transparent conducting film.And in above-mentioned altitude range, transparent conducting film can preferably be taken into account Resist blocking and that and optical effect.

In one of the embodiments, the quantity for the nano-particle that each particle clusters include is less than 100.

Particle diameter is that 10~50nm nano-particle is readily available under existing processing technology, and can the more conveniently group of realization The control of poly- speed and degree.Therefore, the particle diameter of the nano-particle used in the present embodiment is 10~50nm.

And when the particle diameter of nano-particle is 10~50nm, and the quantity of nano-particle is less than 100 in each particle clusters, " hollow-core construction " formed in particle clusters is evenly distributed, so that printing opacity is uniform on the whole for particle clusters.Therefore, include First hard conating of particle clusters and/or the translucent effect of the second hard conating also evenly, on surface when can avoid the light from passing through Light and dark region is formed, so as to further improve the optical effect of transparent conducting film.

In one of the embodiments, the nano-particle is spherical in shape and/or elliposoidal.

Spherical or elliposoidal nanoparticle surface is smooth, therefore the surface of the particle clusters agglomerated into will not form hair The structures such as thorn, corner angle, so as to be avoided that particle clusters damage base material.

Distance between particle clusters and substrate surface, represent that particle clusters are embedded in the first hard conating and/or the second hard conating Depth.Within this range, the fastness of particle clusters attachment can while height of projection is ensured, be increased.

A kind of touch screen, the touch screen are made as the transparent conducting film any one of above preferred embodiment Into the touch screen includes Touch Zone and lead district, and the first metal layer and the second metal layer are located at the lead district； The Touch Zone include by first transparency conducting layer first electrode that forms of etching and by the etching of the second transparency conducting layer and Into second electrode；The lead district is included by the first metal layer and the first transparency conducting layer quilt positioned at the lead district The first lead formed is etched, and shape is etched by the second metal layer and positioned at the second transparency conducting layer of the lead district Into the second lead.

In above-mentioned touch screen, by the first metal layer, second metal layer, the first transparency conducting layer and the second transparency conducting layer Directly etching obtains the first lead and the second lead.It is therefore not necessary to formed and first electrode and the second electricity by silk-screen mode again The lead of pole electrical connection.Compared with traditional touch screen, due to without silk-screen, the contact conductor directly formed by gold-tinted processing procedure Width can further reduce, therefore touch screen has narrow frame.

Brief description of the drawings

Fig. 1 is the stepped construction schematic diagram of transparent conducting film in the utility model preferred embodiment；

Fig. 2 is the local A of transparent conducting film shown in Fig. 1 enlarged drawing；

Fig. 3 is the structural representation of particle clusters in transparent conducting film shown in Fig. 1；

Fig. 4 is the stepped construction schematic diagram of transparent conducting film in the utility model another embodiment；

Fig. 5 is the stepped construction schematic diagram of touch screen in the utility model preferred embodiment.

Embodiment

For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings State.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can come in many different forms Realize, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to of the present utility model The understanding of disclosure more thorough and comprehensive.

It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", " right side " and similar statement are for illustrative purposes only.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include The arbitrary and all combination of one or more related Listed Items.

Fig. 1 and Fig. 2 is referred to, the transparent conducting film 10 in the utility model preferred embodiment includes base material 11, the One hard conating 12, the first transparency conducting layer 13, the first metal layer 14, the second hard conating 22, the second transparency conducting layer 23 and second Metal level 24.

Base material 11 includes the first surface (upper surface shown in Fig. 1) and second surface (lower surface shown in Fig. 1) being oppositely arranged. Base material 11 is formed by amorphism thin polymer film.Because amorphism thin polymer film is smaller simultaneously than crystalline polymer film birefringence And uniformly, the irregular colour that can be eliminated in transparent conducting film 10 of the present utility model is even.For amorphous of the present utility model Birefringence in the face of property thin polymer film is preferably 0~0.001, and more preferably 0~0.0005.It is new for this practicality The deviation of birefringence in the face of the amorphism thin polymer film of type is preferably less than 0.0005, and more preferably 0.0003 Below.

Foregoing birefringence and its deviation can be reached by selecting the amorphism thin polymer film of suitable species.Specifically In the present embodiment, base material 11 is polycyclic alkene or makrolon or pet film.The two types Film can meet the requirement of birefringence and its deviation.The thickness of the base material 11 formed by amorphism thin polymer film is 20 μm ~200 μm.

First hard conating 12, the first transparency conducting layer 13 and the first metal layer 14 are sequentially formed in the first table of base material 11 Face.Second hard conating 22, the second transparency conducting layer 23 and second metal layer 24 are sequentially formed in the second surface of base material 11.Its In：

First hard conating 12 plays a protective role to the first surface of base material 11.First hard conating 12 includes binding agent tree Fat.The resin glue includes the hardening resin composition for example based on ultraviolet, electron ray.Hardening resin composition Preferably comprise polymer obtained from glycidyl acrylate based polymer carries out addition reaction with acrylic acid.Or solidification Property resin combination preferably comprises polyfunctional acrylic ester polymer (pentaerythrite, dipentaerythritol etc.).Curable resin group Compound also includes polymerization initiator.

First transparency conducting layer 13 is formed at the surface of the first hard conating 12.First transparency conducting layer 13 is by visible region Sheet resistance value (the unit of transmissivity height (more than 80%) and per unit area in domain (380nm~780nm)：Ω/m²) be 500Ω/m²Following layer is formed.Preferred 15nm~the 100nm of thickness of first transparency conducting layer 13, more preferably 15nm~ 50nm.First transparency conducting layer 13 is for example by indium tin oxide (ITO), indium tin oxide or indium oxide-zinc oxide composites Any formation.

The first metal layer 14 is formed on the surface of the first transparency conducting layer 13.The first metal layer 14 is of the present utility model When transparent conducting film is used for such as touch panel, connected up for being formed in the outside of touch input area.On forming the The material of one metal level 15, representational is copper, silver, it is possible to use the arbitrary metal of excellent electric conductivity in addition. The thickness of the first metal layer 14 is preferably 50nm~500nm, more preferably 100nm~300nm.

Further, the second hard conating 22, the second transparency conducting layer 23 and second metal layer 24 respectively with the first hard conating 12nd, the film layer structure of the first transparency conducting layer 13 and the first metal layer 14, function and material composition are identical, therefore no longer superfluous herein State.

In addition, the first hard conating 12 and/or the second hard conating 22 contain multiple particle clusters 15, with the first metal layer 14 And/or the surface of second metal layer 24 forms multiple raised 16.Also referring to Fig. 3, particle clusters 15 are by multiple nano-particles 151 agglomerate into.Wherein, the particle diameter of nano-particle 151 is 10~50nm.

Specifically, particle clusters 15 can irregularly, can also preset rules (as equably) be distributed in first and hard apply In the hard conating 22 of layer 12 and/or second.The size of nano-particle 151 is nanoscale, and multiple nano-particles 151 are reunited resulting The size of grain cluster 15 is micron order.Wherein, nano-particle 151 because its surface have accumulated substantial amounts of positive and negative electric charge.Moreover, Nano-particle 151 has very high chemism, shows strong skin effect, it is easy to aggregation occurs and reaches stable shape State, so as to reunite.

Further, can be by controlling pH value, control nano-particle 151 using modes such as dispersant, surfactants The speed and degree reunited, so as to realize control to the quantity of the nano-particle 151 included in each particle clusters 150 System.

Particle clusters 15 can be only contained in the first hard conating 12 or the second hard conating 22, so as to obtain one side formed with convex Play 16 transparent conducting film 10；Particle clusters 15 can be also contained in the first hard conating 12, be also contained in the second hard painting In layer 22, so as to obtain the two-sided transparent conducting film 10 formed with projection 16.

Illustrated by taking the first hard conating 12 as an example：

Particle clusters 15 protrude from the surface of the first hard conating 12, so that the surface of the first hard conating 12 forms evagination Region, and the region that the first hard conating 12 is not provided with particle clusters 15 then forms flat site 17.Due to the first transparency conducting layer 13 and the surface that is cascading with the first hard conating 12 of the first metal layer 14, therefore both surface configurations and the first hard conating 12 surface configuration is identical.Therefore, in the first metal layer 14 and 14 corresponding region of particle clusters, multiple raised 16 can be formed.

Similarly, when containing particle clusters 15 in the second hard conating 22, the surface of second metal layer 24 can also form multiple convex Play 16.

When using volume to volume technique (roll to roll process) to manufacture the transparent conductive film 10 of strip, by The surface of the first metal layer 14 and/or second metal layer 24 is set to form multiple raised 16 in particle clusters 15.Therefore, it is saturating in curling During bright conductive membrane 10, multiple raised 16 can make to form point contact between two neighboring metal level, so as to prevent that it is mutually viscous Even, crimping.

Particle clusters 15 are additionally, since to be agglomerated into by multiple nano-particles 151.Therefore, for single nano-particle 151 Size need not be accurately controlled, controlled in the range of 10~50nm.When forming particle clusters 15, only need By the quantity for controlling the nano-particle 151 reunited, you can the projection 16 met the size requirements.As can be seen here, preparing During transparent conducting film 10, both do not have to be accurately controlled the size of nano-particle 151, without the nanometer to obtaining Particle 151 is screened, and so as to simplification of flowsheet, and then lifts processing efficiency.

Further, since particle clusters 15 are agglomerated into by multiple nano-particles 151, therefore particle clusters 15 can not be formed smoothly Surface.Therefore, particle clusters 15 are relative to single micron-sized particle, its surface roughness increase, so as to adhesive force increase.

Further, multiple nano-particles 151 are difficult between adjacent nano-particle 151 when being agglomerated into particle clusters 15 To avoid to have gap.Therefore, for particle clusters 15 compared with single micron particles, its inside has " hollow-core construction ", therefore Declines are blocked to light.That is, include the first hard conating 12 and/or the second hard conating 22 of particle clusters 15 Light transmittance increase, so as to can effectively improve the optical effect of transparent conducting film 10.

In the present embodiment, particle clusters 15 are contained in the first hard conating 12 and the second hard conating 22, so that the first gold medal The surface of category layer 14 and second metal layer 24 is each formed with multiple raised 16.

That is, the two-sided of resulting transparent conducting film 10 is each formed with multiple raised 16.Therefore, crimping During transparent conducting film 10, the point position that contact is put between adjacent two metal levels is increased, therefore the effect that its resist blocking and that, resistance to compression connect Fruit is more preferable.

Referring to Fig. 4, in another embodiment, any of the first hard conating 12 and the second hard conating 22 contain particle Cluster 15, so that the surface of the first metal layer 14 or second metal layer 24 is formed with multiple raised 16.

That is, the resulting only one side of transparent conducting film 10 is formed with multiple raised 16.Accordingly, it is capable to avoid two The shade of layer particle clusters 15 is overlapped mutually, to mitigate mist degree, so as to while playing resist blocking and that, resistance to compression connects effect, moreover it is possible to Lift the optical effect of transparent conducting film 10.

In the present embodiment, particle clusters 15 are identical with the material of the first hard conating 12 and the second hard conating 22.

Because particle clusters 15 are identical with the material of the first hard conating 12 and the second hard conating 22 (being collectively referred to as hard conating below), Therefore its optical parametric is also identical.Therefore, in particle clusters 15 and the linkage interface of hard conating, light propagation institute is impacted smaller, It is an entirety that particle clusters 15 are closer with hard conating.When light is through the first hard conating 12 containing particle clusters 15 and the During two hard conatings 22, distortion is smaller caused by its round.Therefore, transparent conducting film 10 is reaching resist blocking and that, resistance to compression The purpose connect is simultaneously, moreover it is possible to avoids its optical property from being adversely affected.

Further, in the present embodiment, the material of particle clusters 15 is silica, organosilicon polymer, acrylic acid Birds of the same feather flock together compound or styrene polymer.

Above material has the advantage that translucency is good, is easily obtained, and can meet performance requirement for particle clusters 15 Under the premise of reduce cost.Certainly, also other suitable materials can be selected according to the performance and cost needs of reality.

In the present embodiment, the quantity for the nano-particle 151 that each particle clusters 15 include is less than 100.

Specifically, the nano-particle 151 that particle diameter is 10~50nm is readily available under existing processing technology, and can be more square Just the control for realizing reunion speed and degree.In the aggregation procedure of nano-particle 151, when obtained particle clusters 15 reach pre- If during size, then control stops reuniting.

Moreover, when the particle diameter of nano-particle 151 is 10~50nm, the quantity of nano-particle 151 in each particle clusters 15 During less than 100, " hollow-core construction " formed in particle clusters 15 is evenly distributed, so that the printing opacity on the whole of particle clusters 15 Uniformly.Therefore, include particle clusters 15 the first hard conating 12 and/or the second hard conating 22 translucent effect also evenly, Light can be avoided to form light and dark region on surface when passing through, so as to further improve the optics of transparent conducting film 10 Effect.

Further, in the present embodiment, nano-particle 151 is spherical in shape or elliposoidal.

Specifically, the nano-particle 151 of various shapes can be included in a particle clusters 15.Spherical or elliposoidal nanometer The surface of particle 151 is smooth, therefore the surface of the particle clusters 15 agglomerated into will not form the structures such as burr, corner angle, so as to keep away Exempt from particle clusters 15 and damage base material 11.

It is pointed out that in other embodiments, nano-particle 151 can be in also other shapes, and can enter between each other Row is reunited.

In order to realize that more preferably resist blocking and that and resistance to compression connect effect, for the first metal layer 14 and the table of second metal layer 24 The dense degree of surface roughness and projection 16 has corresponding requirement.

In the present embodiment, the first metal layer 14 and the surface arithmetic average roughness Ra of second metal layer 24 are 0.0025 ~0.025 μm.In addition, the distribution density of projection 16 is 100~3000/mm²。

When the distribution density of projection 16 is excessive, it can cause that the haze value of transparent conducting film 10 is excessive, light transmission rate drop It is low, and then have a strong impact on the outward appearance and optical effect of transparent conducting film 10.And if the distribution density of projection 16 is too small, then The effect of resist blocking and that is limited.In above-mentioned roughness and density range, transparent conducting film 10 can preferably take into account resist blocking and that And optical effect.

Wherein, the first metal layer 14 and the surface arithmetic average roughness Ra and distribution density of second metal layer 24 can pass through The shape of particle clusters 15, size and content are adjusted to change.

Further, in the present embodiment, along perpendicular to the side of the first metal layer 14 and/or the surface of second metal layer 24 Upwards, multiple raised 16 height are 0.1~0.5 μm.

The height of projection 16, refer to that projection 16 protrudes from the height on the first metal layer 14 and/or the surface of second metal layer 24 Degree.Because the size of particle clusters 15 is smaller, therefore it is difficult to be accurately controlled each raised 16 height.Therefore, by projection 16 height is controlled in above-mentioned altitude range.It is pointed out that in actual production, due to being difficult to every cluster of grains The progress of cluster 15 accurately controls, therefore the height position for having the projection 16 that few partial particulate cluster 15 is formed being difficult to avoid that In outside above range.But influenceed caused by part projection 16 negligible.

In general, the height of projection 16 is higher, then resist blocking and that effect is better.But with the rise of height, The size of grain cluster 15 so as to cause the haze value of transparent conducting film 10 also to increase therewith, and reaches mutually in requisition for increase The optical effect of transparent conducting film 10 will be had a strong impact on after to a certain extent.And in above-mentioned altitude range, it is transparent to lead Electric thin film 10 can preferably take into account resist blocking and that and optical effect.

Wherein, the height of projection 16 can be changed by adjusting the suspension degree of the size of particle clusters 15 and particle clusters 15 Become.

Above-mentioned transparent conducting film 10, particle clusters 15 make the surface of the first metal layer 14 and/or second metal layer 24 Form multiple raised 16.Therefore, when crimping above-mentioned transparent conducting film 10, multiple raised 16 can make two neighboring metal level Between formed point contact, so as to prevent that its is inter-adhesive.Particle clusters 15 are additionally, since by multiple reunion shapes of nano-particle 151 Into.Therefore, need not be accurately controlled for the size of single nano-particle 151.When forming particle clusters 15, need to only lead to Cross the quantity for the nano-particle 151 that control is reunited, you can the projection 16 met the size requirements.As can be seen here, preparing thoroughly During bright conductive membrane 10, both do not have to be accurately controlled the size of nano-particle 151, without the nanoparticle to obtaining Son 151 is screened, and so as to simplification of flowsheet, and then lifts processing efficiency.

In addition, the utility model also provides a kind of touch screen.Please refer to fig. 5, in the utility model preferred embodiment Touch screen 200 as made by the transparent conducting film 10 in above-described embodiment.Wherein：

Touch screen 200 includes Touch Zone 210 and lead district 220.Specifically, Touch Zone 210 is located in touch screen 200 Portion, and lead district 220 is then around the circumferentially disposed of Touch Zone 210.The first metal layer 14 and second metal layer 24 are located at lead district 220。

Touch Zone 210 includes first electrode 211 and second electrode 212.Wherein, first electrode 211 is by the first electrically conducting transparent The etching of layer 13 forms；Second electrode 212 is etched by the second transparency conducting layer 23 and formed.First electrode 211 and second electrode 212 are lost It is carved into electrode pattern.Specifically, electrode pattern is general elongated and intersects vertically in latticed, relative first electrode 211 And second electrode 212 forms the two poles of the earth of capacitance structure.

Lead district 220 includes the first lead 221 and the second lead 222.First lead 221 is by the first metal layer 14 and is located at First transparency conducting layer 13 of lead district 220 is etched to form；Second lead 222 is then by second metal layer 24 and positioned at lead district 220 the second transparency conducting layer 23 is etched to form.First lead 221 and the second lead 222 are double-decker, so as to realize with First electrode 211 and second electrode 212 electrically connect.

It is transparent by the first metal layer 14, second metal layer 24, the first transparency conducting layer 13 and second in above-mentioned touch screen The directly etching of conductive layer 23 obtains the first lead 221 and the second lead 222.Therefore, because without silk-screen, directly by gold-tinted processing procedure The width of the contact conductor of formation can further reduce, therefore touch screen has narrow frame.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope that this specification is recorded all is considered to be.

Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed, But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (9)

1. a kind of transparent conducting film, including：

Base material, including the first surface and second surface being oppositely arranged；

It is sequentially formed in the first hard conating, the first transparency conducting layer and the first metal layer of the first surface；

It is sequentially formed in the second hard conating, the second transparency conducting layer and second metal layer of the second surface；

Characterized in that, first hard conating and/or second hard conating contain multiple particle clusters, with described first The surface of metal level and/or the second metal layer forms multiple projections, and the particle clusters are by multiple nano-particle reunion shapes Into, and the particle diameter of the nano-particle is 10~50nm.

2. transparent conducting film according to claim 1, it is characterised in that the base material is polycyclic alkene or poly- carbonic acid Ester or pet film.

3. transparent conducting film according to claim 1, it is characterised in that the raised distribution density be 100~ 3000/mm²。

4. transparent conducting film according to claim 1, it is characterised in that the particle clusters and the described first hard painting The material of layer and second hard conating is identical.

5. transparent conducting film according to claim 4, it is characterised in that the material of the particle clusters is titanium dioxide Silicon, organosilicon polymer, acrylic polymer or styrene polymer.

6. transparent conducting film according to claim 1, it is characterised in that along perpendicular to the first metal layer And/or on the direction on the second metal layer surface, the multiple raised height is 0.1~0.5 μm.

7. according to the transparent conducting film described in any one of claim 1 to 6, it is characterised in that each particle clusters Comprising the nano-particle quantity be less than 100.

8. transparent conducting film according to claim 7, it is characterised in that the nano-particle is spherical in shape and/or ellipse It is spherical.

9. a kind of touch screen, it is characterised in that the touch screen is as the electrically conducting transparent described in any one of the claims 1 to 8 Made by property film, the touch screen includes Touch Zone and lead district, and the first metal layer and the second metal layer are located at The lead district；The Touch Zone is included by first transparency conducting layer first electrode that forms of etching and transparent by second The second electrode that Conductive Layer Etch forms；The lead district is included by the first metal layer and first positioned at the lead district The first lead that transparency conducting layer is etched to form, and transparent led by the second metal layer and positioned at the second of the lead district The second lead that electric layer is etched to form.