CN205789148U - A kind of conductive film - Google Patents
A kind of conductive film Download PDFInfo
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- CN205789148U CN205789148U CN201620434680.2U CN201620434680U CN205789148U CN 205789148 U CN205789148 U CN 205789148U CN 201620434680 U CN201620434680 U CN 201620434680U CN 205789148 U CN205789148 U CN 205789148U
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Abstract
The utility model discloses a kind of conductive film to include: supporting body, described supporting body is provided with first surface.Conduction region, the first surface of described supporting body offers the first groove；Described first groove is filled conductive material and forms the conductive grid that is interconnected, described in the conductive grid that is interconnected form described conduction region；Lead district, the first surface of described supporting body offers the second groove, fills conductive material and form contact conductor in described second groove, and described contact conductor forms described lead district；Described contact conductor is electrically connected with described conductive grid.The width of described second groove is more than the width of the first groove.Comparing the design that traditional electrode lead areas metal wire is intensive, be more easy to the demoulding, substantially prolongs the mold use life-span, and conductive material density is bigger, electric conductivity is more preferable.
Description
Technical field
This utility model relates to a kind of conductive film.
Background technology
Transparent conductive film is a kind of both to have had high electric conductivity, has again the excellent of good light transmission to visible ray
The conductive film of optimum energy, is with a wide range of applications.Be successfully applied to liquid crystal display,
Contact panel, electromagnetic wave proof, the transparency electrode transparent surface heating element of solaode and flexible luminous organ
In the fields such as part.
Traditional touch screen typically uses tin-doped indium oxide (Indium Tin Oxides, ITO) conductive layer.
When preparing ITO layer, the most inevitably needing plated film, graphically, electrode silver wire makes.And
Needing the when of ITO pattern to be etched ito film, this traditional Making programme is complicated and tediously long, makes
The poorly conductive of conductive layer, thus cause yields the highest.And technique, equipment are wanted by this Making programme
Ask higher, in etching, also waste substantial amounts of ITO material, and produce the substantial amounts of Industry Waste containing heavy metal
Liquid.
The development of wire netting conductive film technology compensate for disadvantages described above.Wire netting conductive film lead-in wire electrode one
As use smaller latticed design, and the depth-to-width ratio of grid lines groove is identical with visible area transparency electrode.
Its production process includes for first at thereon one layer of UV glue of coating or impressing glue, then mould being fitted in base
On plate, solidification, the last demoulding.But, during mould and the colloidal materials demoulding, mould has
The residual of colloidal materials, affects mold use, and production more can be caused to be normally carried out.
Utility model content
Based on this, it is necessary to provide a kind of conductive film to solve techniques discussed above problem.
A technical scheme of the present utility model is:
A kind of conductive film, it includes supporting body, conduction region and lead district；Described supporting body is provided with first surface；
Described first surface offers the first groove and the second groove, and described first groove forms the grid being interconnected；
Described first groove is filled conductive material and forms the conductive grid that is interconnected, described in the conduction that is interconnected
Conduction region described in grid protocol；Described second groove is non-grid shape, wherein fills conductive material and forms electrode
Lead-in wire, described contact conductor forms described lead district；Described contact conductor is electrically connected with described conductive grid；
The width of described second groove is more than the width of the first groove.
Wherein in an embodiment, described conduction region includes some conductive channels insulated from each other, each described
Conductive channel is formed by described conductive grid, and described each conductive channel correspondence respectively is electrically connected with described electrode
Lead-in wire, is provided with between adjacent described conductive channel and conducts electricity material by filling in forming described first groove of grid
The color matching district that material is formed.
Wherein in an embodiment, described second depth of groove is that B, B are less than with the ratio of the second recess width
0.8。
Wherein in an embodiment, the width of described second groove is 5-100 micron.
Wherein in an embodiment, described supporting body is substrate and is located at described suprabasil hypothallus, described
Conduction region and lead district are located at the described hypothallus side away from substrate；Or, described supporting body is polymer,
Described conduction region and lead district are located at the first surface of described polymer.
Wherein in an embodiment, described supporting body also includes the second surface being oppositely arranged with first surface,
Described second surface also is provided with conduction region and lead district；Or, described supporting body first surface side is provided with insulating barrier,
Described insulating barrier is provided with conduction region and lead district away from the side of first surface.
Wherein in an embodiment, the degree of depth of described second groove is not less than the degree of depth of described first groove.
Wherein in an embodiment, fill at least two and above different-grain diameter size in described second groove
Conductive material.
Wherein in an embodiment, the conductive material filled in described second groove is more than including at least particle diameter
The conductive material of 500nm and the particle diameter conductive material less than or equal to 500nm.
Wherein in an embodiment, the conductive material filled in described second groove is more than including at least particle diameter
Conductive material and the particle diameter conductive material less than or equal to 400nm in 800nm.
The beneficial effects of the utility model:
(1) technical scheme that this utility model provides, conduction region uses the first groove, and contact conductor uses the
Two grooves, the width of described second groove is more than the width of the first groove；Compare traditional electrode lead areas gold
Belong to the design that line is intensive, be more easy to the demoulding, substantially prolongs the mold use life-span, and conductive material density is more
Greatly, electric conductivity is more preferable.
(2) technical scheme that this utility model provides, the conductive material filled in described second groove at least wraps
It is less than or equal to the conductive material of 500nm, so electrode more than 500nm conductive material and particle diameter containing particle diameter
Lead areas contains the conductive material of two or more particle diameter, the most well enhances the electric conductivity of contact conductor,
Owing to depth-to-width ratio is different, so second groove in contact conductor region can preferably accommodate the conduction material of big particle diameter
Material.
Accompanying drawing explanation
Fig. 1 is this utility model one conductive film cross section structure schematic diagram.
Fig. 2 is this utility model one conductive film planar structure schematic diagram.
Fig. 3 is this utility model one conductive film part structure for amplifying schematic diagram.
Fig. 4 is another cross section structure schematic diagram of this utility model one conductive film.
Fig. 5 is another planar structure schematic diagram of this utility model one conductive film.
Fig. 6 is another structure for amplifying schematic diagram of this utility model one conductive film.
Fig. 7 is this utility model one conductive film another kind cross section structure schematic diagram.
Fig. 8 is this utility model one conductive film another kind cross section structure schematic diagram.
Detailed description of the invention
For the ease of understanding this utility model, below with reference to relevant drawings, this utility model is carried out more comprehensively
Description.Accompanying drawing gives better embodiment of the present utility model.But, this utility model can lead to
Cross many different forms to realize, however it is not limited to embodiment disclosed below.On the contrary, provide this
The purpose of a little embodiments be make disclosure of the present utility model is understood more thorough comprehensively.
It should be noted that when element is referred to as " being arranged at " another element, and it can be directly at another
On individual element or element placed in the middle can also be there is.When an element is considered as " connection " another yuan
Part, it can be directly to another element or may be simultaneously present centering elements.Used herein
Term " vertical ", " level ", "left", "right" and similar statement simply to illustrate that mesh
, being not offered as is unique embodiment.
Unless otherwise defined, all of technology used herein and scientific terminology with belong to of the present utility model
The implication that those skilled in the art are generally understood that is identical.Institute in description of the present utility model herein
The term used is intended merely to describe the purpose of specific embodiment, it is not intended that in limiting this utility model.
Term as used herein "and/or" includes the arbitrary and all of one or more relevant Listed Items
Combination.
A kind of conductive film, rises and includes supporting body, conduction region and lead district.Described supporting body is provided with first surface；
Described first surface offers the first groove and the second groove, and described first groove forms the grid being interconnected；
Described first groove is filled conductive material and forms the conductive grid that is interconnected, described in the conduction that is interconnected
Conduction region described in grid protocol；Described second groove is non-grid shape, wherein fills conductive material and forms electrode
Lead-in wire, described contact conductor forms described lead district；Described contact conductor is electrically connected with described conductive grid；
The width of described second groove is more than the width of the first groove.Preferably, the width of the second groove is 5-100
Micron.The degree of depth of described first groove and the first recess width ratio for it for A, described second depth of groove and the
The ratio of two recess width is B；Wherein, B < A.Described supporting body is substrate and is located at hypothallus in described substrate
Or described supporting body is polymer, wherein, described hypothallus and polymer are thermosetting cement or optic-solidified adhesive,
Described conduction region and lead district are located at described hypothallus away from the side of substrate or described conduction region and lead-in wire
District is located at the first surface of described polymer.
In order to gather the signal of diverse location point, described conduction region includes some conductive channels insulated from each other, often
Individual conductive channel correspondence respectively is electrically connected with described contact conductor.Each conductive channel exists at least one
The signal of this conductive channel is guided on external equipment by contact conductor, and so make can the most well gather telecommunications
Number change；Wherein, the contact conductor each conductive channel connected is separate.
In order to ensure the concordance of the optical effect of conductive film surface entirety, between adjacent described conductive channel
Being provided with color matching district, described color matching district has the first groove, and described first groove forms grid；Described first
Groove is filled conductive material form color matching district or fill non electrically conductive material, color matching district and conductive channel it
Between insulated from each other；Mesh parameter in the mesh parameter in color matching district and conductive channel can be the same or different,
Network can also be different, can be between connection or each grid to be phase between the grid in color matching district
Disconnect mutually；Insulation mode between color matching region and conductive channel can be the grid on breakaway-element or border
Mutually stagger in summit.
In order to improve the performance of contact conductor, described second depth of groove is less than with the ratio B of the second recess width
In 0.8, further, described second depth of groove is less than or equal to 0.5 with the ratio B of the second recess width, more enters
One step, the ratio B of described second depth of groove and the second recess width is less than 0.15, but described second groove
The degree of depth is more than 0 with the ratio B of the second recess width；Owing to currently mainly using narrow frame, so contact conductor
Width is the narrowest more good on the premise of ensureing contact conductor performance.Conductive layer electric conductivity to be ensured and optics effect
Really, described first depth of groove and the ratio A of the first recess width are more than or equal to 0.8.
It addition, the width of the second groove is more than the width of the first groove, the degree of depth of the second groove also can be corresponding simultaneously
Intensification so that the degree of depth of the second groove is more than the degree of depth of the first groove.It is arranged such, the horizontal stroke of the second groove
Sectional area increases relatively, can be packed into more conductive material to ensure the electric conductivity of contact conductor, simultaneously
Do not interfere with the demoulding.Certainly, the degree of depth of the second groove can also be equal to the degree of depth of the first groove, or, the
The degree of depth of two grooves might be less that the degree of depth of the first groove.
Conductive film can also is that the structure of bilayer, when as touch screen, is more to use two-layer conductive thin
Film, so can more preferable position location, the second surface of described supporting body also is provided with conduction region and lead district,
The described conductive grid of institute and described contact conductor are electrically connected with；Or, described supporting body first surface side is provided with absolutely
Edge layer, described insulating barrier is provided with conduction region and lead district away from the side of first surface, described conductive grid and
Described contact conductor is electrically connected with.Described second conductive coating structure can be convex shape can also be groove structure.
Certainly conductive film can also is that one-layer multi-point structure.
Wherein, the first groove and the filled conductive material of the second groove are selected from Graphene, charcoal, metal, metal
In oxide or organic conductive material one or more, metal can be gold, silver or copper etc., conducting metal
Oxide can be ITO etc., and organic conductive material can be PEDOT.Wherein, described second groove is filled
Conductive material including at least particle diameter more than conduction material less than or equal to 500nm of 500nm conductive material and particle diameter
Material；Further, the conductive material filled in described second groove is more than or equal to 800nm including at least particle diameter
Conductive material and particle diameter less than or equal to the conductive material of 400nm；First groove may contain big particle diameter
Conductive material, described big particle diameter conductive material is that particle diameter is more than 500nm, if fill conductive material grain
Footpath may will not be inserted in the first groove due to the widths affect of the first groove more greatly.
Hereinafter, refer to diagram, specifically describe embodiment of the present utility model.Refer to Fig. 1, for one
The cross section structure of conductive film, conductive film is substrate PET 11 the most successively, and thickness is 100 μm；
Adhesion promoting layer 12, wherein tack coat can also, merely just in order to increase caking property；Bearing bed is for having
The esters of acrylic acid UV glue 13 of groove structure, the second groove 14 degree of depth 3 μm of lead district, width can be
20 μm, 10 μm, 6 μm or 3.75 μm, the first groove 15 degree of depth 3 μm of conduction region, width 2.2 μm；
Lead district groove depth-to-width ratio is less than conduction region；Fill in second groove the 14, first groove 15 is argent,
Metallic silver particles average diameter in second groove 14 is 1um, and the metallic silver particles in the first groove 15 is average
A diameter of 500nm；Argent thickness is less than gash depth, about 2 μm, or argent thickness equal to ditch
Groove depth, about 3 μm.
Refer to the plane graph that Fig. 2 is the present embodiment bearing bed, bearing bed arranges conduction region 21 and lead district
22.The pattern of conductive channel 210 can be arranged as required to as multiple rows of, multiple row, the electrode need of each pattern
To connect the contact conductor 220 of correspondence respectively, to realize signal of telecommunication transmission.Conductive channel 210 is by network
Constituting, grid lines live width 2.2 μm, the grid lines length of side is preferably 260 μm, and acute angle is 60 °.Electrode
Lead-in wire 220 is made up of the single line that live width is 20 μm.Specifically can be from the lead district enlarged drawing shown in Fig. 3
Go out.The black lines of conductive channel 210 is formed by filler metal silver in the first groove 15, contact conductor 220
Black lines formed by filler metal silver in the second groove 14, white space is insulating regions, white space
For esters of acrylic acid UV glue 13.
Refer to Fig. 4, the cross sectional representation of another kind of conductive film.Conductive film is base the most successively
End glass 41 (may also be referred to as supporting body), thickness is 0.5mm；Bearing bed is the propylene with groove structure
Esters of gallic acid UV glue 42, the second groove 43 degree of depth 3.5 μm of lead district, width 10 μm, the of conduction region
One groove 44 degree of depth 3.5 μm, width 2.5 μm；Lead district the second groove depth-to-width ratio is less than conduction region.The
Fill in two grooves 43 and the first groove 44 is metallic copper, and the metallic silver particles in the second groove 43 is average
A diameter of 800nm or 1 μm, the metallic copper particle average diameter in the first groove 44 is 400nm or 500nm；
Argent thickness is less than, more than or equal to gash depth.
Refer to the plane graph that Fig. 5 is the present embodiment conductive film.Wherein, bearing bed arranges conduction region 51 He
Lead district 52.Conductive channel 510 is constituted by grid with contact conductor 520.The pattern of conductive channel 510
Can be arranged as required to as multiple rows of, multiple row, the conductive channel of each pattern needs to connect respectively the electricity of correspondence
Pole lead-in wire 520, to realize signal of telecommunication transmission.Conductive channel 510 is made up of irregular polygon random grid,
Grid lines live width 2.5 μm, net lattice control diameter is preferably 150um.Contact conductor 520 is by grid lines 10um
Square mesh constitute, the square mesh length of side is 20um.Specifically can put from the contact conductor region shown in Fig. 6
Big figure is found out.The black lines of conductive channel 510 is formed by filler metal copper in the first groove 44, electrode
The black lines of lead-in wire 520 is formed by filler metal copper in the second groove 43, and white space is insulating regions,
White space is esters of acrylic acid UV glue 42.
The conductive film that above-described embodiment provides, the grid of described conductive channel is except rhombus or the most polygon
Outside shape, it is also possible to for square, parallelogram, regular hexagon, curvilinear boundary quadrilateral or polygon isotactic
Then shape.Curvilinear boundary quadrilateral refers to have four curl, and two relative curl have same shape and curve
Trend.Described contact conductor is in addition to single line or square, it is also possible to for parallelogram, regular hexagon,
The regular shape such as curvilinear boundary quadrilateral or polygon.
In metal grill conductive layer groove described in the utility model fill metal material can be gold, silver, copper,
Aluminum, nickel, zinc or wherein any both or both above alloys.
There is the esters of acrylic acid UV glue of groove structure, equally with and UV glue there is same nature or can
Substitute reaching the organic materials such as the ultraviolet-curable materials of identical purpose, thermoplastic or thermosets,
Such as: PMMA, PC, PDMS etc..
Referring to Fig. 7, conductive film described in the utility model can also is that bilateral structure.Conductive film from upper and
Having the first bearing bed, substrate 60 and the second bearing bed, the first bearing bed is third with groove structure
Olefin(e) acid esters UV glue 61, the second groove 65 degree of depth 3.5 μm of lead district, width 5 μm, the of conduction region
One groove 63 degree of depth 3.5 μm, width 2.5 μm；Lead district the second groove depth-to-width ratio is less than electrode zone；
Second bearing bed is the esters of acrylic acid UV glue 62 with groove structure, same, the second groove of lead district
66 degree of depth 3.5 μm, width 5 μm, the first groove 64 degree of depth 3.5 μm of conduction region, width 2.5 μm；
Lead district the second groove depth-to-width ratio is less than electrode zone.
Referring to Fig. 8, conductive film described in the utility model can also is that single-surface double-layer structure.Conductive film is certainly
Being provided with the first bearing bed, the second bearing bed and substrate 70 down, the first bearing bed is for having groove structure
Esters of acrylic acid UV glue 71, the second groove 75 degree of depth 3.5 μm of lead district, width 5 μm, conduction region
The first groove 73 degree of depth 3.5 μm, width 2.5 μm；Lead district the second groove depth-to-width ratio is less than electrode district
Territory；Second bearing bed is the esters of acrylic acid UV glue 72 with groove structure, same, the second of lead district
Groove 76 degree of depth 3.5 μm, width 5 μm, the first groove 74 degree of depth 3.5 μm of conduction region, width 2.5 μm；
Lead district the second groove depth-to-width ratio is less than electrode zone.
Described on end, the conductive film disclosed in this utility model, conduction region uses the first groove, and electrode draws
Line uses the second groove, described first depth of groove to be m and the first recess width is n, and the ratio of m, n is A,
Described second depth of groove is m and the second recess width is s, and the ratio of m, s is B；Wherein, B < A；Compare
The design that traditional electrode lead areas metal wire is intensive and depth-to-width ratio is bigger, is more easy to the demoulding, substantially prolongs mould
The service life of tool, and conductive material density is bigger, electric conductivity is more preferable.And described second groove is filled
Conductive material including at least particle diameter more than conduction material less than or equal to 500nm of 500nm conductive material and particle diameter
Material, so the conductive material of two or more particle diameter is contained in contact conductor region, the most well enhances
The electric conductivity of contact conductor, owing to depth-to-width ratio is different, so second groove in contact conductor region can be preferably
Accommodate the conductive material of big particle diameter.
The width of the second groove more than fill in the width of the first groove, the second groove at least two and above not
With the conductive material of size, the cooperation of big small particle is filled and is prevented the second groove from can not fill full and affecting
Electric conductivity, thus the electric conductivity of contact conductor can be ensured.With this, the second groove is not by conductive material grain
The restriction of footpath size, comparability is in the width width of the first groove, such as 5-100 micron, thus beneficially mould
The demoulding, and then be beneficial to produce.
It addition, the convenience that the first bearing bed described here and the second bearing bed are intended merely to narration is compiled
Number, there is not order successively, the first groove and the second groove are then the different groove of groove parameters,
Distinct groove.First groove the 15,44,63,64,73,74 and second groove 14,43,65,
66,75,76 simply have employed different numberings to preferably describe in different structure, the first groove is
Groove in conductive channel, the second groove is the groove of contact conductor, but the one the second the most do not exist successively
Sequentially.
Furthermore, in Fig. 1, the degree of depth of the second groove 14 of conductive film can be with 3.5 μm, 4 μm or 4.5
μm, the degree of depth of the first groove 15 is constant；In Fig. 4 the degree of depth of conductive film the second groove 43 can be 4 μm,
5 μm or bigger (less than or equal to bearing bed thickness), first groove 44 degree of depth can keep constant.
Understandable for enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent from, above in conjunction with attached
Detailed description of the invention of the present utility model is described in detail by figure.Superincumbent description elaborates much have
Body details is so that fully understanding this utility model.But this utility model can be retouched above to be much different from
The alternate manner stated is implemented, and those skilled in the art can be in the case of this utility model intension
Doing similar improvement, therefore this utility model is not limited by particular embodiments disclosed above.Further, above
Each technical characteristic of described embodiment can combine arbitrarily, for making description succinct, not to above-mentioned enforcement
The all possible combination of each technical characteristic in example is all described, but, as long as these technical characteristics
There is not contradiction in combination, is all considered to be the scope that this specification is recorded.
Embodiment described above only have expressed several embodiments of the present utility model, its describe more concrete and
In detail, but therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that,
For the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to
Making some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, this utility model
The protection domain of patent should be as the criterion with claims.
Claims (10)
1. a conductive film, it is characterised in that it includes supporting body, conduction region and lead district；Described supporting body is provided with first surface；Described first surface offers the first groove and the second groove, and described first groove forms the grid being interconnected；Described first groove is filled conductive material and forms the conductive grid that is interconnected, described in the conductive grid that is interconnected form described conduction region；Described second groove is non-grid shape, wherein fills conductive material and forms contact conductor, and described contact conductor forms described lead district；Described contact conductor is electrically connected with described conductive grid；The width of described second groove is more than the width of the first groove.
A kind of conductive film the most according to claim 1, it is characterized in that, described conduction region includes some conductive channels insulated from each other, each described conductive channel is formed by described conductive grid, described each conductive channel respectively correspondence is electrically connected with described contact conductor, is provided with by forming the color matching district that filling conductive material in described first groove of grid is formed between adjacent described conductive channel.
A kind of conductive film the most according to claim 1, it is characterised in that described second depth of groove is that B, B are less than 0.8 with the ratio of the second recess width.
A kind of conductive film the most according to claim 1, it is characterised in that the width of described second groove is 5-100 micron.
A kind of conductive film the most according to claim 1, it is characterised in that described supporting body is substrate and is located at described suprabasil hypothallus, and described conduction region and lead district are located at the described hypothallus side away from substrate；
Or, described supporting body is polymer, and described conduction region and lead district are located at the first surface of described polymer.
A kind of conductive film the most according to claim 1, it is characterised in that described supporting body also includes the second surface being oppositely arranged with first surface, and described second surface also is provided with conduction region and lead district；
Or, described supporting body first surface side is provided with insulating barrier, and described insulating barrier is provided with conduction region and lead district away from the side of first surface.
A kind of conductive film the most according to claim 1, it is characterised in that the degree of depth of described second groove is not less than the degree of depth of described first groove.
8. according to a kind of conductive film described in any one of claim 1 to 7, it is characterised in that fill at least two and the conductive material of above different-grain diameter size in described second groove.
A kind of conductive film the most according to claim 8, it is characterised in that the conductive material filled in described second groove is more than conductive material and the particle diameter conductive material less than or equal to 500nm of 500nm including at least particle diameter.
A kind of conductive film the most according to claim 8, it is characterised in that the conductive material filled in described second groove is more than or equal to conductive material and the particle diameter conductive material less than or equal to 400nm of 800nm including at least particle diameter.
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|---|---|---|---|
| CN201620434680.2U CN205789148U (en) | 2016-05-13 | 2016-05-13 | A kind of conductive film |
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| CN201620434680.2U CN205789148U (en) | 2016-05-13 | 2016-05-13 | A kind of conductive film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108920035A (en) * | 2018-06-30 | 2018-11-30 | 云谷（固安）科技有限公司 | Touch panel and preparation method thereof |
| CN110126370A (en) * | 2018-02-09 | 2019-08-16 | 昇印光电（昆山）股份有限公司 | Conductive film |
-
2016
- 2016-05-13 CN CN201620434680.2U patent/CN205789148U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126370A (en) * | 2018-02-09 | 2019-08-16 | 昇印光电（昆山）股份有限公司 | Conductive film |
| CN108920035A (en) * | 2018-06-30 | 2018-11-30 | 云谷（固安）科技有限公司 | Touch panel and preparation method thereof |
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