KR101776482B1 - Method for manufacturing flexible transparent battery by harden layer - Google Patents

Abstract

According to the present invention, a method to manufacture a flexible transparent battery by using a hardening layer includes: a step of applying a polar substance (20) to a mold (10), including micropatterns (15), to fill the micropatterns (15); a step of removing the polar substance (20) from the surface of the mold (10) to make the polar substance (20) remain only in the micropatterns (15); a step of applying a conductive ink (30) to the mold (10) to fill the micropatterns (15) which have already been filled with the polar substance (20); a step of removing the conductive ink (30) from the surface of the mold (10) to make the conductive ink (30) remain in the upper part of the polar substance (20) in the micropatterns (15); a step of coating the upper part of the micropatterns (15) and the mold (10) with a liquid hardening substance (40); a step of placing a substrate (50) on the hardening substance (40) and then hardening the same; and a step of removing the mold (10) to print a battery electrode structure, which is inverse to the mold (10), on the substrate (50).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a transparent transparent battery,

The present invention relates to a flexible transparent battery manufacturing method using a cured layer. More particularly, the present invention relates to a method for producing a transparent battery having a three-dimensional lattice structure by using a material layer having UV light curing or thermal curing properties.

Specifically, a three-dimensional shape is formed in a mold by filling a positive patterned negative electrode material and a conductive ink of a battery on a fine patterned mold, coating a liquid curable material, attaching the substrate, curing and removing the substrate. The present invention relates to a method for accurately transferring a battery anode or a cathode.

In the case of displays and electronic circuits, flexible transparent devices have been developed very actively, but batteries have not been able to keep pace with the development speed of displays and electronic circuits due to structural limitations and difficulties in manufacturing methods.

In order to fabricate a flexible transparent battery structure, there has been reported a method of filling electrodes by depositing electrodes on a grid-shaped substrate, removing the electrodes on the surface, and filling the battery material with capillary phenomenon. However, since such a technique includes a deposition process, the selection of the substrate due to a rise in temperature is restricted, and manufacturing facilities are expensive and the process time is long.

In addition, since the capillary phenomenon must be used, extra surface treatment is required, and the size of the pattern that can realize the capillary phenomenon is restricted. In addition, the large area can not fill the uniform thickness due to the capillary phenomenon, and the volume reduction due to the evaporation of the solvent is large, so that the battery capacity can be reduced due to the small volume to fill the battery material as compared with the actual lattice space. And also has a disadvantage that the surface area of the battery material in contact with the electrolytic solution is low.

As a conventional document which suggests a method of forming a wafer electrode, reference may be made to Korean Patent No. 10-1005005 (2010.12.30). The present invention relates to a method for forming a solar cell wafer electrode capable of stably forming a fine electrode pattern through a low cost process by brush plating a metal layer on an electrode formed by inkjet printing and achieving a high aspect ratio of electrode wiring . Meanwhile, the above document provides a method of forming a solar cell wafer electrode having excellent correspondence with design and model change by directly printing on a wafer using a pattern image without using a shape mold, or a method of forming a low- In order to overcome the thickness, it is limited to the content that the thickness of the electrode wiring is sufficiently grown through electrolytic plating of metal material through brush plating. In order to fabricate a flexible transparent battery structure, electrodes and conductive ink are supplied on the mold, There is a limit to the fact that there is no description of the contents in order to enable a large-scale process.

(Patent Document 1) KR10-1005005 B

In order to solve the above-described problems, the present invention provides a method of manufacturing an ink-jet printer, which uses a material layer having UV light curing property or thermosetting property, And a method of advancing the transfer in a state in which the line width, the height, and the area are kept unchanged while maintaining the shape.

In order to achieve the above object, the present invention is proposed to manufacture a flexible transparent battery which is the most important core component of a transparent transparent electronic device in which the technology is rapidly developing.

In the present invention, the battery polarity material and the conductive ink of the battery inserted into the mold through the bonding using the curable material are reliably transferred to the substrate, thereby forming a battery having a three-dimensional lattice structure having a fine line width, thereby realizing a flexible transparent battery .

The present invention provides a method of manufacturing a semiconductor device, comprising: applying a polar material (20) to fill the fine pattern (15) on a mold (10) on which a fine pattern (15) is formed; Removing the polar material (20) on the surface of the mold (10) to leave the polar material (20) only in the fine pattern (15); Applying the conductive ink (30) on the mold (10) so as to fill the fine pattern (15) filled with the polar material (20); Removing the conductive ink (30) on the surface of the mold (10) to leave the conductive ink (30) on the polar material (20) in the fine pattern (15); Coating a liquid curable material (40) to cover the mold (10) and the top of the fine pattern (15); Bonding and curing the substrate (50) on the curable material (40); And removing the mold 10 to transfer the battery electrode structure having the reverse phase of the mold 10 to the substrate 50.

The polar material 20 is any one selected from the group consisting of LCO, LFP, LMO, NCM, LTO, MCMB, sulfur, silicon and the like.

The conductive ink 30 is any one of a group including a carbon silver ink, a graphene ink, a silver ink, a carbon ink, a copper ink, a CNT ink, a silver nanowire, and a conductive polymer.

The viscosity of the conductive ink 30 may be 20,000 cP or less.

The curable material 40 is any one of a group including a thermoplastic resin, a thermosetting resin, a UV curable resin, and a curable resin using a catalyst.

The process of removing the polar material 20 or the conductive ink 30 on the surface of the mold 10 so that the polar material 20 or the conductive ink 30 remains in the fine pattern 15 Is performed through a doctor ring process.

Further comprising the step of drying the polar material (20) and the conductive ink (30) after the doctoring process, wherein the drying step is performed after the hardening of the curable material (40) and the transfer of the battery electrode structure The conductive ink 30 and the conductive ink 30 are both dried to have strong bonding at the interface or before the curing of the curable material 40, The polarity material 20, the conductive ink 30, and the curable material 40 are mixed with each other through an individual drying process, thereby preventing the respective characteristics from deteriorating.

And applying the transferred battery electrode structure to a solar panel, a transparent display or a flexible display.

The step of transferring the battery electrode structure is successively transferred using a roll-to-roll or roll-to-plate printing process.

The transferred battery electrode structure is fabricated so as to be disposed on both sides of a plurality of separation membranes 60 arranged vertically to fabricate a transparent battery having a multilayer structure.

The method of manufacturing a flexible transparent battery using the cured layer according to the present invention as described above can realize far more various patterns than the conventional transparent battery manufacturing method and can dramatically increase the performance of the battery.

Further, the present invention is also suitable for a large-area process and is not restricted by the substrate material, so that it is easier to catch process conditions.

In addition, the present invention makes it possible to fabricate electrodes having a thinner line width, and can achieve high transparency and a large battery capacity at the same time through a structure having a high aspect ratio. Therefore, it is possible to easily apply the process without hindering the existing process in the production of various devices, and the process cost can be lowered. In addition, the roll-to-roll or roll-to-plate process can be applied, which can significantly reduce the production cost.

1 is a process diagram showing a process of manufacturing a flexible transparent battery using a cured layer according to the present invention.
FIG. 2 shows a structure of a transparent battery formed with a negative-grained structure, in which a separator is disposed between transparent batteries formed in the form of an anode and a cathode.
FIG. 3 is a view illustrating a state in which a transparent battery formed of a negative electrode or an anode on both sides of one substrate in a vertical direction, a transparent battery formed of a cathode or an anode in a vertical direction and a separator interposed therebetween, Battery structure.
FIG. 4 shows the result of patterning an arbitrary material by the method according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of other various forms of implementation, and that these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know completely. Wherein like reference numerals refer to like elements throughout.

It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals whenever possible, even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

In the present invention, a material having a curing property acts as a bonding layer, thereby firmly bonding an upper battery material to a conductive ink and a lower substrate, so that the battery structure can be transferred from the mold to the substrate in a circular pattern.

FIG. 1 is a process diagram showing a process of manufacturing a flexible transparent battery using a cured layer according to the present invention. FIG. 2 shows a transparent battery structure formed with a negative- . FIG. 3 is a view illustrating a state in which a transparent battery formed of a negative electrode or an anode on both sides of one substrate in a vertical direction, a transparent battery formed of a cathode or an anode in a vertical direction and a separator interposed therebetween, Battery structure. FIG. 4 shows the result of patterning an arbitrary material by the method according to the present invention.

A process for manufacturing a flexible transparent battery using a cured layer will be described with reference to FIG.

First, a mold 10 having various shapes and fine patterns 15 is prepared (a), and a slurry battery polar material 20 is applied on the mold 10 (b). Here, the mold 10 may be transparent or opaque.

Thereafter, when the battery polar material 20 is removed from the surface of the mold 10 through the doctor ring process, the battery polar material 20 remains only in the fine pattern 15 (c). At this time, the linewidth of the battery polar material 20 to be formed is in units of microns, and a pattern of several um to several hundreds of um can be freely implemented on the same mold 10 at the same time. The doctoring process is a process of forming a pattern by scraping the substrate with a doctor blade at a constant pressure and speed to remove unnecessary ink film or resist film formed on the surface of the substrate, and filling only the predetermined pattern groove.

In addition, the depth of the battery polar material 20 remaining on the mold 10 can be freely changed according to a desired shape. On the other hand, the depth of the polar material 20 may correspond to several times the line width.

The battery polar material 20 may be a slurry type electrode material having an anode or a cathode. The battery polar material 20 may be selected from the group consisting of LCO, LFP, LMO, NCM, LTO, MCMB, sulfur, silicon and the like as an electrode material used in a battery manufacturing process in a slurry form. It is possible to adopt other materials.

Next, the conductive ink 30 in the form of slurry is applied (d) on the mold 10 in the state where the battery polar material 20 is filled in the fine pattern 15. Thereafter, when the conductive ink 30 is removed on the surface of the mold 10 through the doctor ring process, the battery conductive ink 30 remains only in the fine pattern 15 (e). At this time, the line width of the conductive ink 30 to be formed is in the unit of microns, and a pattern of a few um to several hundreds of um can be freely implemented on the same mold 10 at the same time. The depth of the conductive ink 30 may correspond to several times the line width.

In this way, a structure in which the battery polar material 20 and the conductive ink 30 are stacked in a multilayer structure is formed in the fine pattern 15 of the mold 10.

The conductive ink 30 may be selected from the group including carbon silver ink, graphene ink, silver ink, carbon ink, copper ink, CNT ink, silver nanowire, and conductive polymer, but is not limited thereto. It is possible to employ

Meanwhile, the characteristics of the polar material 20, the conductive ink 30, and the curable material 40 are prevented from being deteriorated by the drying process after the doctor ring process.

The drying step may include drying the polar material 20 and the conductive ink 30 at the same time after curing the curable material 40 and transferring the battery electrode structure so as to have strong bonding at the interface, , Or on the other hand, after the doctoring of the conductive ink 30 and the conductive ink 30, before drying the curable material 40, the polar material 20, conductive The ink 30 and the curable material 40 are mixed to prevent the respective characteristics from deteriorating.

After the liquid curable material 40 is coated so as to cover the mold 10 and the upper portion of the fine pattern 15, the curable material 40 is bonded to the substrate 50 and cured g). In this process, the curable material 40 is bonded to the conductive ink 30 whose surface is hardened at the lower side, and has a strong bonding force. Here, the substrate 50 is preferably transparent.

The curable material 40 may include a thermoplastic resin, a thermosetting resin, a UV curable resin, a curable resin using a catalyst, and the like, and may be a material capable of solidifying through a curing process in a liquid state.

When the mold 10 is removed, the battery electrode structure composed of the reversed phase of the mold 10 is directly transferred to the substrate 50 (h). That is, the substrate 50 has a structure in which the curable material 40, the conductive ink 30, and the battery polar material 20 are stacked in this order. Here, the conductive ink 30 and the battery polar material 20 are protruded at a predetermined interval on the substrate 50 (h).

1 (i) may be disposed in a direction in which the battery polar material 20 faces each other, and the separation membrane 60 may be inserted between the pair of battery electrode structures.

The proposed method has advantages in that it can be applied to a much wider range of patterns / linewidths than the method of forming a battery electrode structure using a capillary phenomenon in an existing mold and is advantageous in manufacturing a large area transparent battery. Further, since it does not depend on the characteristics of the substrate, various substrate materials can be widely used.

In addition, since the anode or cathode material is exposed on the surface in a three-dimensional shape, the surface area can be widened to further improve the performance of the battery, and a material having a much higher density than the method using capillary phenomenon can be used, It is possible to increase the capacity of the battery.

Since the shape of the mold can be implemented as it is, the present invention can form electrodes having a narrow line width of several micrometers, and the problem of breaking the electrodes due to the maintenance of strong bonding force is remarkably reduced, thereby increasing the work yield.

In addition, there is little need for additional equipment, simplifying the process, making it possible to maximize the overall process cost and process time.

The flexible transparent battery manufactured according to the present invention is applicable to a solar panel, a transparent display, a flexible display, and the like. In addition, the present invention is applicable to manufacturing a transparent battery in which a touch panel is integrated with a battery, a display, or a battery using a substrate on which a display or a touch panel is patterned.

2, when the conductive ink 30 and the battery polar material 20 are poured directly onto the substrate 50 on which the fine pattern 15 is formed and the doctoring process is performed, It is possible. Here, the substrate 50 is preferably transparent. It is possible to employ the mold 10 in place of the substrate 50 in a cupper.

In this case, although the surface area at which the battery polar material 20 contacts is reduced, the overall flexibility of the battery can be increased by increasing the stability of the structure, and the battery capacity compared to the same transparency can be easily increased through the high aspect ratio structure I have.

That is, the reversed-phase battery structure can be manufactured by pouring and conducting the conductive ink 30 and the polar material 20 directly onto the patterned substrate 50 in turn.

Referring to FIG. 3, a transparent battery structure formed of a cathode or an anode is coupled through a plurality of separators 60 disposed along the vertical direction. That is, the battery electrode structure is formed on both sides of the separator 60 to form a multi-layered transparent battery structure. The separation membrane 60 may be a porous transparent electrolyte film containing an electrolytic solution. Polar substances having an anode and a cathode are disposed on both sides of the separator 60.

In the process of forming the transparent battery through the plurality of separation membranes 60, it is possible for one substrate 50 to have the same polarity or to have different polarities on both sides thereof.

4 is a result of patterning an arbitrary material by the method according to the present invention, and the fabricated pattern was uniformly formed with a line width of about 3 탆 and a height of about 15 탆.

Looking at the cut surface, it can be seen that the substrate and the pattern material are tightly coupled despite the fact that they are torn by the cutting force. Particularly, when the bottom part of the pattern is examined, it can be seen that a strong bond is formed by integrating and integrating the boundary between the curable resin and the pattern material so as to be difficult to distinguish.

As described above, the transfer through the strong bonding force provides a reliable bonding force to allow the mold material to escape from the mold even after the pattern material is dried, and it is then apparent that the rigidity of the manufactured structure is excellent.

The method of manufacturing a flexible transparent battery using the cured layer according to the present invention as described above can realize far more various patterns than the conventional transparent battery manufacturing method and can dramatically increase the performance of the battery.

The present invention makes it possible to fabricate electrodes with thinner linewidths, and can achieve high transparency and large battery capacity at the same time through a high aspect ratio structure. Therefore, it is possible to easily apply the process without hindering the existing process in the production of various devices, and the process cost can be lowered. In addition, the roll-to-roll or roll-to-plate process can be applied, thereby significantly lowering the production cost.

It is to be understood that the terms "comprises", "comprising", or "having" as used in the foregoing description mean that the constituent element can be implanted unless specifically stated to the contrary, But should be construed as further including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Mold
15: fine pattern
20: Battery polar material
30: Conductive ink
40: Curable material
50: substrate
60: membrane

Claims (10)

Applying a polar material (20) to fill the fine pattern (15) on the mold (10) on which the fine pattern (15) is formed;
Removing the polar material (20) on the surface of the mold (10) to leave the polar material (20) only in the fine pattern (15);
Applying the conductive ink (30) on the mold (10) so as to fill the fine pattern (15) filled with the polar material (20);
The conductive ink 30 is removed on the surface of the mold 10 so that the conductive ink 30 remains on the polar material 20 in the fine pattern 15 to form a fine pattern of the mold 10. [ Forming a structure in which the battery polar material (20) and the conductive ink (30) are stacked in a multilayer structure;
Coating a liquid curable material (40) to cover the mold (10) and the top of the fine pattern (15);
Attaching and curing the substrate (50) in a transparent state on the curable material (40);
Removing the mold (10) and transferring the battery electrode structure made of the reverse phase of the mold (10) to the substrate (50);
Disposing the pair of battery electrode structures in a direction in which the polar material 20 faces each other; And
Inserting a separator (60) between the pair of battery electrode structures,
The separation membrane (60) is a porous transparent electrolyte film containing an electrolyte,
A method of manufacturing a flexible transparent battery using a cured layer.
The method according to claim 1,
The polar material 20 may be any one selected from the group consisting of LCO, LFP, LMO, NCM, LTO, MCMB, sulfur,
A method of manufacturing a flexible transparent battery using a cured layer.
3. The method of claim 2,
The conductive ink 30 is one of a group including a carbon silver ink, a graphen ink, a silver ink, a carbon ink, a copper ink, a CNT ink, a silver nanowire, and a conductive polymer.
A method of manufacturing a flexible transparent battery using a cured layer.
The method according to claim 1,
Wherein the curable material (40) is at least one selected from the group consisting of a thermoplastic resin, a thermosetting resin, a UV curable resin and a curable resin using a catalyst,
A method of manufacturing a flexible transparent battery using a cured layer.
The method according to claim 1,
The process of removing the polar material 20 or the conductive ink 30 on the surface of the mold 10 so that the polar material 20 or the conductive ink 30 remains in the fine pattern 15 Performed through the doctor ring process,
A method of manufacturing a flexible transparent battery using a cured layer.
6. The method of claim 5,
Drying the polar material (20) and the conductive ink (30) after the doctoring process,
The drying step may be performed by simultaneously drying the polar material 20 and the conductive ink 30 after curing the curable material 40 and transferring the battery electrode structure,
The conductive ink 30 and the curable material 40 through the individual drying process after the doctoring of the conductive ink 30 and the conductive ink 30 before curing the curable material 40. [ Which prevents the phenomenon of deterioration of each characteristic by mixing,
A method of manufacturing a flexible transparent battery using a cured layer.
The method according to claim 1,
Applying the transferred battery electrode structure to a solar panel, a transparent display or a flexible display,
A method of manufacturing a flexible transparent battery using a cured layer.
The method according to claim 1,
Wherein the step of transferring the battery electrode structure includes a step of continuously transferring the battery electrode structure using a roll-
A method of manufacturing a flexible transparent battery using a cured layer.
The method according to claim 1,
The battery electrode structure thus transferred is disposed on both sides of a plurality of separator films 60 arranged vertically to manufacture a transparent battery having a plurality of layers.
A method of manufacturing a flexible transparent battery using a cured layer.
The method according to claim 1,
Wherein the polar material (20) and the conductive ink (30) are symmetrically arranged on the upper and lower surfaces of the battery electrode structure,
A method of manufacturing a flexible transparent battery using a cured layer.

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