CN103700430A - Conductive film with ordered distribution and manufacturing method thereof - Google Patents
Conductive film with ordered distribution and manufacturing method thereof Download PDFInfo
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- CN103700430A CN103700430A CN201310728460.1A CN201310728460A CN103700430A CN 103700430 A CN103700430 A CN 103700430A CN 201310728460 A CN201310728460 A CN 201310728460A CN 103700430 A CN103700430 A CN 103700430A
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Abstract
The invention provides a conductive film with ordered distribution. The conductive film comprises a base plate and a conductive layer arranged on the base plate, wherein the conductive layer is formed by orderly distributing a conductive filler. By utilizing the process, a network structure with ordered distribution can be formed by use of less linear conductive fillers, so that the transparent conductive film with high light transmittance and low surface resistance can be manufactured; the light transmittance of the conductive film can be more than 95%, the square ohmic value of the conductive film is less than 45 ohm/m<2>, and favorable light transmittance and conductibility can be realized simultaneously.
Description
Technical field
The invention belongs to a kind of conductive film, specifically a kind of conductive film of orderly distribution.
Background technology
Transparent conductive film refers to when having superior electrical conductivity energy at visible light wave range, to have the film of higher light transmittance.Often be applied to contact panel, the transparency electrode of solar film battery, flat-panel monitor, can electroluminescence device etc.And the advantage such as along with various devices are towards the development of lightening, flexibleization, flexible transparent conductive film is owing to having flexible, frivolous and obtain the extensive concern of all circles.
Making at present transparent conductive film generally adopts metal-oxide film to do conductive coating structure, applying maximum is that ITO is indium zinc metal oxide, and the method by evaporation or sputter shows to form the conductive indium-zinc oxide film of one deck at transparent glass or plastic.Yet whole coating process need to carry out under condition of high vacuum degree, and coating temperature and after annealing all will at high temperature carry out, very high to equipment requirement.And metal oxide is when being subject to extraneous effect of stress or bending, is easy to be damaged, and has limited its development in flexible device field.
Now for making the electric conducting material of transparent conductive film, mainly contain: metal nanometer line, metal nanoparticle, conducting high polymers thing, Graphene, carbon nano-tube etc.The transparent conductive film that wherein adopts linear conductance filler to make has excellent electric conductivity and light transmittance, after repeatedly bending, still can keep lower sheet resistance value.Therefore there are most potentiality and substitute ITO for making transparent conductive film.
In traditional transparent conductive film, linear conductance filler forms network configuration by random and realizes electric conductivity, so conductive layer need to have and reaches a certain amount of linear conductance filler and have lower sheet resistance to guarantee it.Yet increasing of linear conductance filer content, can cause that film light transmittance declines, mist degree improves, and affects using value.Therefore need a kind of new technique of making, only use a small amount of linear conductance filler to form the network configuration of orderly distribution, make the transparent conductive film of high transmission rate, low sheet resistance.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the conductive film of a kind of high transmission rate, low sheet resistance is provided.
In order to achieve the above object, the present invention by the following technical solutions: a kind of conductive film of orderly distribution, comprises substrate and be arranged on the conductive layer on substrate; Described conductive layer is distributed and forms in order by conductive filler.Than prior art, the conductive film of a kind of orderly distribution of the present invention, its conductive layer is distributed and forms in order by conductive filler, thereby forms the structure distributing in order.Utilize this technique, only use a small amount of linear conductance filler to form the network configuration of orderly distribution, just can make the transparent conductive film of high transmission rate, low sheet resistance.The light transmittance of membrane of conducting layer can reach more than 95%, and its square resistance is low to moderate 45 Ω/below mouth, can simultaneously realize good light transmission and conductivity.
Further, described conductive filler is distributed as one-dimension oriented distribution in the same direction in order.
Further, described conductive filler is distributed as in order along the two-dimentional crossed orientation of 0 ° to 90 ° and distributes.
Further, described conductive filler is distributed as two-dimentional square crossing distribution of orientations in order.
Further, described conductive filler is metal nanometer line, carbon nano-tube, metal nanoparticle, Graphene, conducting polymer or oxidized metal.
Another technical scheme of the present invention is as follows: a kind of conductive film of orderly distribution, and comprise substrate and be arranged on the conductive layer on substrate, also comprise an orientation rete for being orientated; Described conductive layer is coated on alignment film and is formed by conductive filler, to form the structure of orderly distribution.Orientation rete has the effect of arranging conductive filler in optical anisotropic layer.
Further, described conductive filler is distributed as one-dimension oriented distribution in the same direction in order.
Further, described conductive filler is distributed as in order along the two-dimentional crossed orientation of 0 ° to 90 ° and distributes.
Further, described conductive layer be arranged on the top of this alignment film or bottom or and alignment film be one.
Another object of the present invention is to provide a kind of preparation technology's simple and fast, can produce the manufacture method of high conduction, high transmission rate film.
In order to achieve the above object, the present invention by the following technical solutions: by conductive ink through 1 time or repeatedly coating method be coated on substrate, after dry solidification, form conductive film; Described painting method is orientating type coating.
Further, every layer of conductive filler distribution direction of orientation is with front once parallel.
Further, every layer of conductive filler distribute to direction and front once at an angle; The scope of this angle is between 0 ° to 90 °.
Further, every layer of conductive filler distribution direction of orientation is with front once vertical.
Further, realizing the mode being orientated is mechanics orientation, light orientation orientation or chemistry orientation.
Further, coating process is hairbrush coating, the coating of roller rod, silk screen printing, intaglio printing, letterpress or inkjet printing.
Accompanying drawing explanation
Fig. 1 is electric conducting material distribution map of the prior art
Fig. 2 is electric conducting material in the present invention one-dimension oriented distribution map in the same direction
Fig. 3 is the two-dimentional square crossing distribution of orientations figure of the electric conducting material in the present invention
Fig. 4 is that electric conducting material in the present invention is along the two-dimentional crossed orientation distribution map of different directions
Referring to drawings and the specific embodiments, the invention will be further described.
Embodiment
Embodiment 1
The HPMC aqueous solution of the Nano silver solution of concentration 10mg/ml and concentration 1wt% is mixed to nano-silver thread average diameter 35nm, length 10um according to the mass ratio of 1:6.The suspension of gained is mixed to 10 minutes on eddy blending machine, thereby obtain finely dispersed suspension.Use No. 2 Mayer rods that this suspension is coated on glass substrate.Subsequently glass substrate is transferred to rapidly on 90 ℃ of hot plates to dry solidification 2 minutes, makes Nano Silver transparent conductive film.
Test sample surface resistivity, light transmittance.After the loss of deduction glass substrate light transmittance, membrane of conducting layer is 95.2% at the light transmittance of 550 nano wave lengths, and the square resistance that four probe method records is 75 Ω/mouths.
Embodiment 2
The HPMC aqueous solution of the Nano silver solution of concentration 10mg/ml and concentration 1wt% is mixed to nano-silver thread average diameter 35nm, length 10um according to the mass ratio of 1:6.The suspension of gained is mixed to 10 minutes on eddy blending machine, thereby obtain finely dispersed suspension.Use No. 1 Mayer rod that this suspension is coated on glass substrate, glass substrate is transferred to rapidly on 90 ℃ of hot plates to dry solidification 2 minutes, and then use Mayer rod along the parallel direction that applies for the first time, this suspension to be coated on the conductive film after dry solidification, and be again transferred on 90 ℃ of hot plates dry solidification 2 minutes, make Nano Silver transparent conductive film.As shown in Figure 2, it is electric conducting material in the present invention one-dimension oriented distribution map in the same direction.
Test sample surface resistivity, light transmittance.After the loss of deduction glass substrate light transmittance, membrane of conducting layer is 95.53% at the light transmittance of 550 nano wave lengths, and the square resistance that four probe method records is 78 Ω/mouths.
Embodiment 3
The HPMC aqueous solution of the Nano silver solution of concentration 10mg/ml and concentration 1wt% is mixed to nano-silver thread average diameter 35nm, length 10um according to the mass ratio of 1:6.The suspension of gained is mixed to 10 minutes on eddy blending machine, thereby obtain finely dispersed suspension.Use No. 1 Mayer rod that this suspension is coated on glass substrate, glass substrate is transferred to rapidly on 90 ℃ of hot plates to dry solidification 2 minutes, and then use Mayer rod along vertically applying for the first time direction, this suspension to be coated on the conductive film after dry solidification, and be again transferred on 90 ℃ of hot plates dry solidification 2 minutes, make Nano Silver transparent conductive film.As shown in Figure 3, it is the two-dimentional square crossing distribution of orientations figure of the electric conducting material in the present invention.
Test sample surface resistivity, light transmittance.After the loss of deduction glass substrate light transmittance, membrane of conducting layer is 96.37% at the light transmittance of 550 nano wave lengths, and the square resistance that four probe method records is 70 Ω/mouths.
Embodiment 4
The HPMC aqueous solution of the Nano silver solution of concentration 10mg/ml and concentration 1wt% is mixed to nano-silver thread average diameter 35nm, length 10um according to the mass ratio of 1:6.The suspension of gained is mixed to 10 minutes on eddy blending machine, thereby obtain finely dispersed suspension.Use No. 0 Mayer rod that this suspension is coated on glass substrate, glass substrate is transferred to rapidly on 90 ℃ of hot plates to dry solidification 2 minutes, and then use Mayer rod along the parallel direction that applies for the first time, this suspension to be coated on the conductive film after dry solidification, and be again transferred on 90 ℃ of hot plates dry solidification 2 minutes, again repeat, after previous step, to make Nano Silver transparent conductive film.Fig. 2 is electric conducting material in the present invention one-dimension oriented distribution map in the same direction.
Test sample surface resistivity, light transmittance.After the loss of deduction glass substrate light transmittance, membrane of conducting layer is 94.54% at the light transmittance of 550 nano wave lengths, and the square resistance that four probe method records is 90 Ω/mouths.
Embodiment 5
The HPMC aqueous solution of the Nano silver solution of concentration 10mg/ml and concentration 1wt% is mixed to nano-silver thread average diameter 35nm, length 10um according to the mass ratio of 1:6.The suspension of gained is mixed to 10 minutes on eddy blending machine, thereby obtain finely dispersed suspension.Use No. 0 Mayer rod that this suspension is coated on glass substrate, glass substrate is transferred to rapidly on 90 ℃ of hot plates to dry solidification 2 minutes, and then use Mayer rod along the vertical last direction that applies, this suspension to be coated on the conductive film after dry solidification, and be again transferred on 90 ℃ of hot plates dry solidification 2 minutes, again repeat, after previous step, to make Nano Silver transparent conductive film.Refer to Fig. 3, it is the two-dimentional square crossing distribution of orientations figure of the electric conducting material in the present invention.
Test sample surface resistivity, light transmittance.After the loss of deduction glass substrate light transmittance, membrane of conducting layer is 95.07% at the light transmittance of 550 nano wave lengths, and the square resistance that four probe method records is 45 Ω/mouths.
Embodiment 6
The high molecular polymer of orientation use is dissolved in organic solvent, and is configured to certain density suspension with nano-silver thread.Mode by wet method film forming is coated in substrate surface by this suspension, prepares conductive layer.The orientating type high molecular polymer using is chain type high molecular polymer, has cumarin or other photosensitive functional group of light sensitive characteristic on side chain with the carbochain section link of certain length.Utilize high pressure hernia lamp by filter and polarizer, to obtain the UV polarised light of some strength under photosensitive group sensitive wave length, and by this UV polarised light vertical sand shooting to substrate surface, irradiate certain time length, will there is cross-linking reaction in photosensitive group in UV light polarization direction, form orientation texture.
Embodiment 7
First alignment liquid is coated to substrate surface, use hairbrush to rub in a certain direction and make alignment film, alignment film surface can be brushed out because of the filoplume friction of the friction cloth on orientation roller bearing the microcosmic order structure of arranging in a certain direction, at alignment film surface-coated conductive nano filler, the conductive filler on alignment film can reach directional orientation effect because of intermolecular force.
As variant embodiment of the present invention, the orderly distribution of electric conducting material of the present invention is not limited to parallel distribution or square crossing distributes, and can distribute for the two-dimentional crossed orientation along unspecified angle in 0 ° to 90 °, as shown in Figure 4.
Below be only the preferred embodiment of the present invention, it should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (15)
1. the conductive film distributing in order, comprises substrate and is arranged on the conductive layer on substrate, it is characterized in that: described conductive layer is distributed and forms in order by conductive filler.
2. the conductive film of a kind of orderly distribution as claimed in claim 1, is characterized in that: described conductive filler is distributed as one-dimension oriented distribution in the same direction in order.
3. the conductive film of a kind of orderly distribution as claimed in claim 1, is characterized in that: described conductive filler is distributed as in order along the two-dimentional crossed orientation of unspecified angle in 0 ° to 90 ° and distributes.
4. the conductive film of a kind of orderly distribution as claimed in claim 3, is characterized in that: described conductive filler is distributed as two-dimentional square crossing distribution of orientations in order.
5. the conductive film of a kind of orderly distribution as described in arbitrary claim in claim 1 to 4, is characterized in that: described conductive filler is metal nanometer line, carbon nano-tube, metal nanoparticle, Graphene, conducting polymer or oxidized metal.
6. the conductive film distributing in order, comprises substrate and is arranged on the conductive layer on substrate, it is characterized in that: also comprise an orientation rete for being orientated; Described conductive layer is coated on alignment film and is formed by conductive filler, to form the structure of orderly distribution.
7. the conductive film of a kind of orderly distribution as claimed in claim 6, is characterized in that: described conductive filler is distributed as one-dimension oriented distribution in the same direction in order.
8. the conductive film of a kind of orderly distribution as claimed in claim 6, is characterized in that: described conductive filler is distributed as in order along the two-dimentional crossed orientation of unspecified angle in 0 ° to 90 ° and distributes.
9. the conductive film of a kind of orderly distribution as described in arbitrary claim in claim 6 to 8, is characterized in that: described conductive layer be arranged on the top of this alignment film or bottom or and alignment film be one.
10. a manufacture method for the conductive film distributing in order, is characterized in that comprising the following steps:
By conductive ink through 1 time or repeatedly coating method be coated on substrate, after dry solidification, form conductive film; Described painting method is orientating type coating.
The manufacture method of 11. conductive films as claimed in claim 10, is characterized in that: every layer of conductive filler distribution direction of orientation is with front once parallel.
The manufacture method of 12. conductive films as claimed in claim 11, is characterized in that: every layer of conductive filler distribution direction of orientation and front once at an angle; The scope of this angle is between 0 ° to 90 °.
The manufacture method of 13. conductive films as claimed in claim 12, is characterized in that: every layer of conductive filler distribution direction of orientation is with front once vertical.
The manufacture method of 14. conductive films as claimed in claim 10, is characterized in that: the mode that realizes orientation is mechanics orientation, light orientation orientation or chemistry orientation.
The manufacture method of 15. conductive films as claimed in claim 10, is characterized in that: coating process is hairbrush coating, the coating of roller rod, silk screen printing, intaglio printing, letterpress or inkjet printing.
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| CN201310728460.1A CN103700430B (en) | 2013-12-25 | 2013-12-25 | A kind of conductive film being distributed in order and its manufacture method |
| CN201610322091.XA CN105788708B (en) | 2013-12-25 | 2013-12-25 | A kind of manufacture method for the conductive film being distributed in order |
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| CN103854723A (en) * | 2014-02-20 | 2014-06-11 | 中山大学 | Device with orderly-conductive film |
| CN104051075A (en) * | 2014-05-14 | 2014-09-17 | 中国科学院合肥物质科学研究院 | Method for preparing transparent conductive film on plane provided with step |
| CN104575658A (en) * | 2014-12-24 | 2015-04-29 | 中山大学 | Magnetic field and application of magnetic nanowires in transparent conductive film as well as transparent conductive film and preparation method |
| WO2015124027A1 (en) * | 2014-02-20 | 2015-08-27 | 中山大学 | Orderly distributed conductive thin film, and device and nanometer conductor structure thereof |
| CN105261423A (en) * | 2015-10-30 | 2016-01-20 | 中山大学 | Roll-to-roll preparation device and method for high-performance flexible transparent conductive film |
| CN105957967A (en) * | 2016-06-14 | 2016-09-21 | 国家纳米科学中心 | Preparation method of large-area flexible transparent conductive substrate |
| CN106057359A (en) * | 2016-07-19 | 2016-10-26 | 中山大学 | Preparation method for embedded multi-orientation metal nanowire transparent conductive film |
| CN108845705A (en) * | 2018-06-30 | 2018-11-20 | 昆山国显光电有限公司 | Conductive laminate structure and its manufacturing method, display device |
| CN109346211A (en) * | 2018-08-29 | 2019-02-15 | 汉思高电子科技（义乌）有限公司 | A kind of transparent conductive film with compound structure |
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