CN207182936U - Transparent conducting film and touch screen - Google Patents
Transparent conducting film and touch screen Download PDFInfo
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- CN207182936U CN207182936U CN201721220394.7U CN201721220394U CN207182936U CN 207182936 U CN207182936 U CN 207182936U CN 201721220394 U CN201721220394 U CN 201721220394U CN 207182936 U CN207182936 U CN 207182936U
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Abstract
It the utility model is related to a kind of transparent conducting film.Wherein, the first hard conating and/or the second hard conating include particle, and particle is the structure of inner hollow.Particle makes the surface of the first metal layer and/or second metal layer form multiple projections.Therefore, when crimping above-mentioned transparent conducting film, multiple projections can make to form point contact between two neighboring metal level, so as to prevent that its is inter-adhesive.Further, because particle is hollow structure inside, therefore particle weakens to the barrier effect of light, light transmission rate increase, so as to improve the optical effect of above-mentioned transparent conducting film.In addition, the utility model also provides a kind of touch screen.
Description
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.
However, particle can produce the effect of blocking to light.Therefore, after increasing particle, transparent conducting film can be caused
Light transmittance reduces, and then make it that optical effect is bad.
Utility model content
Based on this, it is necessary to asked for the existing transparent conducting film optical effect with anti-blocking characteristics is poor
A kind of topic, there is provided transparent conducting film and touch screen that can effectively improve optical effect.
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 particles, with the first metal layer and/or
The surface of the second metal layer forms multiple projections；
Wherein, the particle is hollow structure inside.
Particle makes the surface of the first metal layer and/or second metal layer form multiple projections, transparent is led so that above-mentioned
Electric thin film possesses the characteristic of resist blocking and that.Further, because particle is hollow structure inside, therefore stop of the particle to light is made
Increased with decrease, light transmission rate, so as to improve the optical effect of above-mentioned transparent conducting film.
In one of the embodiments, gap be present between the surface of the particle and the base material.
Due to interval between particle and base material be present, the first hard conating and/or the second hard painting are suspended in equivalent to particle is made
In layer, therefore particle will not directly contact with the surface of base material.Therefore, even if the surface of particle has irregular prominent structure,
Also base material will not be caused to damage.
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, first hard conating and second hard conating solidify shape by adhesive resin
Into, and the density of the particle is less than the density of the adhesive resin and more than or equal to the adhesive resin density
10%.
When preparing transparent conducting film, need first to lay a layer fluid shape by way of coating on the surface of base material
Adhesive resin；Before treating adhesive resin solidification, prefabricated particle is sprayed thereon；Particle sinks naturally under gravity
Drop, until certain depth in embedded hard conating；Finally, solidify adhesive resin, the hard conating for including particle can be obtained.
Because the density of particle is less than the density of adhesive resin.Therefore, the particle in the presence of gravity and buoyancy
Realize and suspend in hard conating, without taking other operations, therefore the preparation flow of transparent conducting film can be simplified.In addition,
The density of particle also greater than or 10% equal to adhesive resin density.That is, at least the 10% of particle sinks to hard conating
The middle balance that could realize buoyancy and gravity, so as to ensure the insert depth of particle.
In one of the embodiments, the volume ratio of the solid area of the particle and the hollow area is more than or equal to
50%.
The volume ratio of solid area and hollow area determines the global density of particle.The global density of particle is bigger, and its is embedding
The depth entered in the first hard conating or the second hard conating is bigger, but the height that particle can be caused to protrude is smaller, and this is likely to result in
Raised height deficiency, and then influence the effect of resist blocking and that.And the global density of particle is smaller, the height that particle protrudes is bigger,
But the depth of embedded hard conating is smaller, and this is likely to result in particle and come off.
When the volume ratio of solid area in particle and hollow area is more than or equal to 50%, the global density of particle is fitted
In, preferable resist blocking and that effect can be kept, and can ensures enough insert depths.
In one of the embodiments, the material phase of the particle and first hard conating and second hard conating
Together.
That is, particle and the optical parametric of the first hard conating and the second hard conating (being collectively referred to as hard conating below) also phase
Together.Therefore, in particle and the linkage interface of hard conating, light propagation institute is impacted smaller, and it is one that particle is closer with hard conating
Individual entirety.During when light through the hard conating containing particle, distortion caused by its round is smaller.Therefore, transparent conductivity
Film reach resist blocking and that, purpose that resistance to compression connects simultaneously, moreover it is possible to further avoid its optical property from being adversely affected.
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 as the rise of height, the size of particle accordingly need
Increase, so as to cause the haze value of transparent conducting film also to increase therewith, and will serious shadow after reaching to a certain degree
Ring the optical effect of transparent conducting film.And in above-mentioned altitude range, transparent conducting film can preferably be taken into account anti-stick
Company and optical effect.
In one of the embodiments, the particle is spherical in shape, and the particle diameter of the particle is less than first hard conating
And/or the thickness of the flat site of second hard conating, the flat site are first hard conating or described second hard
Coating is not provided with the region of the particle.
In the conducting film of existing resist blocking and that, the particle diameter of particle must be more than the thickness of hard conating, otherwise can not be in metal
The surface of layer forms projection.Therefore, the particle size of particle is limited to the thickness of hard conating, can not further reduce.However,
Grain particle diameter is bigger, then the haze value increase of conductive film, light transmission rate reduce, and then influence the optical effect of conductive film.
In the present embodiment, because particle is suspended in the first hard conating and/or the second hard conating.Therefore, even if particle
Particle diameter be less than hard conating thickness, nor affect on it and form projection on the surface of the first metal layer or second metal layer.Also
It is to say, the particle diameter of particle is not limited by hard coat layer thickness, and the particle diameter of particle is relative to particle in existing resist blocking and that conducting film
Particle diameter can further reduce, and so as to reduce haze value, lifting light transmission rate, finally improve optical effect.
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 partial enlarged drawing of transparent conducting film shown in Fig. 1；
Fig. 3 is the sectional view of particle 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 particles 15, with the first metal layer 14 and/
Or the surface of second metal layer 24 forms multiple raised 16.Particle 15 is hollow structure inside.
Specifically, particle 15 can irregularly, can also preset rules (as equably) be distributed in the first hard conating 12
And/or second in hard conating 22.Particle 15 can be spheric granules, or unsetting particle.
Particle 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 projection 16
Transparent conducting film 10；Particle 15 can be also contained in the first hard conating 12, be also contained in the second hard conating 22, from
And obtain the two-sided transparent conducting film 10 formed with projection 16.
Illustrated by taking the first hard conating 12 as an example：
Particle 15 protrudes from the surface of the first hard conating 12, so that the surface of the first hard conating 12 forms the area of evagination
Domain, and the region that the first hard conating 12 is not provided with particle 15 then forms flat site 17.Due to the first transparency conducting layer 13 and
One metal level 14 is cascading the surface with the first hard conating 12, therefore both surface configurations and the table of the first hard conating 12
Face shape is identical.Therefore, in the first metal layer 14 and 14 corresponding region of particle, multiple raised 16 can be formed.
Similarly, when containing particle 15 in the second hard conating 22, the surface of second metal layer 24 can also form multiple raised 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 15.Therefore, transparent lead is being crimped
During electric thin film 10, multiple raised 16 can make to form point contact between two neighboring metal level, so as to prevent its inter-adhesive, pressure
Connect.
Further, because particle 15 is hollow structure inside.Therefore, the first metal layer 14 and/or second metal layer 24
Interior to form some " cavities ", being somebody's turn to do " cavity " is caused by the occupy-place of the particle 15 of inner hollow.The presence in " cavity " so that
The barrier effect of 15 pairs of light of grain weakens, light transmission rate increase, so as to improve the optical effect of transparent conducting film 10.
Moreover, the particle 15 of inner hollow can also reduce actual material usage, can also be effective while material is saved
Mitigate the quality of transparent conducting film 10.
In the present embodiment, gap be present between the surface of particle 15 and base material 11.That is, equivalent to making particle 15
It is suspended in the first hard conating 12 and/or the second hard conating 22,
Because particle 15 is equivalent to being suspended in the first hard conating 12 and/or the second hard conating 22, therefore particle 15 will not be with
The surface of base material 11 directly contacts.Therefore, also will not be to base material 11 even if the surface of particle 15 has irregular prominent structure
Cause to damage.
In the present embodiment, particle 15 is contained in the first hard conating 12 and the second hard conating 22, so that the first metal layer
14 and the surface of second metal layer 24 be 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, in any of the first hard conating 12 and the second hard conating 22 containing
Grain 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.Therefore, play it is anti-
While adhesion, resistance to compression connect effect, moreover it is possible to avoid the shade of two layers of particle 15 from being overlapped mutually, to mitigate mist degree, so as to be lifted
The optical effect of bright conductive membrane 10.
In the present embodiment, the first hard conating 12 and the second hard conating 22 are formed by curing by adhesive resin, and particle
Density is less than the density of adhesive resin and more than or equal to the 10% of adhesive resin density.
The forming process of first hard conating 12 and the second hard conating 22 (being collectively referred to as hard conating below) is as described above.It is saturating preparing
During bright conductive membrane 10, the adhesive resin of a layer fluid shape is first laid by way of coating on the surface of base material 11；Treat
Before adhesive resin solidification, prefabricated particle 15 is sprayed thereon；The natural subsidence under gravity of particle 15, until embedding
Enter certain depth in hard conating；Finally, solidify adhesive resin, the hard conating for including particle 15 can be obtained.
Because the density of particle 15 is less than the density of adhesive resin.Therefore, the particle 15 in the presence of gravity and buoyancy
Suspension can be realized in hard conating, without taking other operations, therefore the preparation flow of transparent conducting film 10 can be simplified.
In addition, the density of particle 15 also greater than or 10% equal to adhesive resin density.That is, at least the 10% of particle 15 is heavy
Enter to realize the balance of buoyancy and gravity in hard conating, so as to ensure the insert depth of particle 15.
Also referring to Fig. 3, further, in the present embodiment, solid area 151 and hollow area 153 in particle 15
Volume ratio be more than or equal to 50%.
Specifically, the volume ratio of solid area 151 and hollow area 153 determines the global density of particle 15.Particle 15
Global density is bigger, and the depth that it is embedded in the first hard conating 12 and/or the second hard conating 22 is bigger, but particle 15 can be caused prominent
The height gone out is smaller, and this is likely to result in the height deficiency of projection 16, and then influences the effect of resist blocking and that.And the entirety of particle 15
Density is smaller, and the height that particle 15 protrudes is bigger, but the depth in embedded first hard conating 12 and/or the second hard conating 22 is got over
Small, this is likely to result in particle 15 and come off.
In the utility model, when the volume ratio of solid area 151 and hollow area 153 in particle 15 is more than or equal to
When 50%, the global density of particle 15 is moderate, can keep preferable resist blocking and that effect, and and can ensures enough insert depths.
In the present embodiment, particle 15 is identical with the material of the first hard conating 12 and the second hard conating 22.
Because particle 15 is 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 the linkage interface of particle 15 and hard conating, it is impacted smaller that light propagates institute, particle 15 with
It is an entirety that hard conating is closer.During when light through the first hard conating 12 and the second hard conating 22 containing particle 15, its
Distortion is smaller caused by round.Therefore, transparent conducting film 10 reach resist blocking and that, purpose that resistance to compression connects simultaneously, also
It is avoided that its optical property is adversely affected.
Further, in the present embodiment, the material of particle 15 is silica, organosilicon polymer, acrylic polymer
Compound or styrene polymer.
Above material has the advantage that translucency is good, is easily obtained, and can meet the premise of performance requirement for particle 15
Decline low cost.Certainly, also other suitable materials can be selected according to the performance and cost needs of reality.
In the present embodiment, particle 15 is spherical in shape, and the particle diameter of particle 15 is less than the first hard conating 12 and/or the second hard painting
The thickness of the flat site 17 of layer 22.
In the conducting film of current resist blocking and that, the particle diameter of particle must be more than the thickness of hard conating, otherwise can not be in metal level
Surface form projection.Therefore, the particle size of particle is limited to the thickness of hard conating, can not further reduce.However, particle
Particle diameter is bigger, then the haze value increase of conductive film, light transmission rate reduce, and then influence the optical effect of conductive film.
In the utility model, particle 15 is suspended in the first hard conating 12 and/or the second hard conating 22.Therefore, even if
The particle diameter of particle 15 is less than the thickness of hard conating, nor affects on it and is formed on the surface of the first metal layer 14 or second metal layer 24
Projection 16.That is, the particle diameter of particle 15 is not limited by hard coat layer thickness, the particle diameter of particle 15 is relative to existing resist blocking and that
The particle diameter of particle can further reduce in conducting film, so as to reduce haze value, lifting light transmission rate, finally improve optical effect.
It is appreciated that in other embodiments, particle 15 can also be aspherical particle.Now, particle 15 is perpendicular to base
Size on the direction on the surface of material 11, less than the thickness of flat site 17.
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 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 density range, transparent conducting film 10 can preferably take into account resist blocking and that and optics effect
Fruit.
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 15 is smaller, therefore it is difficult to be accurately controlled each raised 16 height.Therefore, by projection 16
Highly control is in above-mentioned altitude range.It is pointed out that in actual production, due to being difficult to each particle 15
Accurately controlled, therefore the height for having the projection 16 that few partial particulate 15 is formed being difficult to avoid that is located above range
Outside.But influenceed caused by part projection 16 negligible.And the height of projection 16, it may also refer to preset range
The arithmetic mean of instantaneous value of interior a number of raised 16 height.
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 15 so as to cause the haze value of transparent conducting film 10 also to increase therewith, and reaches one mutually in requisition for increase
Determine will to have a strong impact on after degree the optical effect of transparent conducting film 10.And in above-mentioned altitude range, transparent conductivity
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 15 and particle 15.
Above-mentioned transparent conducting film 10, particle 15 form the first metal layer 14 and/or the surface of second metal layer 24
Multiple raised 16.Therefore, when crimping above-mentioned transparent conducting film 10, multiple raised 16 can make between two neighboring metal level
Point contact is formed, so as to prevent that its is inter-adhesive.It is hollow structure inside to be additionally, since particle 15.Therefore, the first metal layer 14
And/or some " cavities " can be formed in second metal layer 24.The presence in " cavity " so that particle 15 subtracts to the barrier effect of light
Weak, light transmission rate increase, so as to improve the optical effect of transparent conducting film 10.
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 particles, with first metal
The surface of layer and/or the second metal layer forms multiple projections；
Wherein, the particle is hollow structure inside.
2. transparent conducting film according to claim 1, it is characterised in that the surface of the particle and the base material it
Between gap be present.
3. transparent conducting film according to claim 2, it is characterised in that first hard conating and described second hard
Coating is formed by curing by adhesive resin, and the density of the particle is less than the density of the adhesive resin and is more than or equal to
The 10% of the adhesive resin density.
4. transparent conducting film according to claim 3, it is characterised in that the solid area of the particle and the sky
The volume ratio in heart district domain is more than or equal to 50%.
5. transparent conducting film according to claim 2, it is characterised in that the particle is spherical in shape, and the particle
Particle diameter be less than first hard conating and/or second hard conating flat site thickness, the flat site is institute
State the first hard conating or second hard conating is not provided with the region of the particle.
6. transparent conducting film according to claim 1, it is characterised in that the raised distribution density be 100~
3000/mm2。
7. transparent conducting film according to claim 1, it is characterised in that the particle and first hard conating and
The material of second hard conating is identical.
8. 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.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721220394.7U CN207182936U (en) | 2017-09-22 | 2017-09-22 | Transparent conducting film and touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721220394.7U CN207182936U (en) | 2017-09-22 | 2017-09-22 | Transparent conducting film and touch screen |
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| CN207182936U true CN207182936U (en) | 2018-04-03 |
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| CN201721220394.7U Active CN207182936U (en) | 2017-09-22 | 2017-09-22 | Transparent conducting film and touch screen |
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