KR-102963237-B1 - MANUFACTURING METHOD FOR METAL LAYER AND METAL LAYER MANUFACTURED THEREFROM

KR102963237B1KR 102963237 B1KR102963237 B1KR 102963237B1KR-102963237-B1

Abstract

The present invention relates to a method for manufacturing a metal layer having a three-dimensional fine pattern using a plating process and a metal layer manufactured therefrom.

Inventors

전환진

Assignees

한국공학대학교산학협력단

Dates

Publication Date: 20260511
Application Date: 20241021

Claims (10)

A step of obtaining a second solution by aging a first solution containing a thermoplastic resin and a silver salt; A step of manufacturing a mold having a pattern formed by using the second solution and the master mold, the pattern having an inverse phase of the pattern of the master mold; and A method for manufacturing a metal layer comprising the step of forming a metal layer with a three-dimensional pattern by performing plating on the above mold.
In claim 1, A method for manufacturing a metal layer, wherein the content of the thermoplastic resin is 5 to 15 parts by weight per 100 parts by weight of the total weight of the first solution.
In claim 1, A method for manufacturing a metal layer in which the molar amount of silver salt is 0.5 mol% to 5 mol% relative to the total molar amount of solvent of the first solution.
In claim 1, A method for manufacturing a metal layer, wherein the thermoplastic resin comprises one or more of polyacrylonitrile (PAN), thermoplastic polyurethane (TPU), polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), silicone resin, polystyrene (PS), polycarbonate (PC), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene (ABS), polyimide (PI), polytetrafluoroethylene (PTFE), and perfluoroalkoxy (PFA).
In claim 1, A method for manufacturing a metal layer, wherein the step of aging the first solution to obtain a second solution is performed at a temperature of 90 ℃ to 120 ℃.
In claim 1, A method for manufacturing a metal layer in which the solvent of the first solution is a polar aprotic solvent.
In claim 1, A method for manufacturing a metal layer, wherein the master mold has a pattern formed on one surface comprising a plurality of protrusions; depressions; or both protrusions and depressions.
In claim 1, A method for manufacturing a metal layer in which the step of forming a metal layer by performing plating on the above mold is performed by an electroless plating or electrolytic plating method.
Manufactured by a method according to any one of claims 1 to 8, and A metal layer comprising one or more metals selected from copper, nickel, chromium, gold, silver, zinc, and tin.
In claim 9, A metal layer having a thickness of 0.1 μm to 50 μm.

Description

Manufacturing method for metal layer and metal layer manufactured therefrom The present invention relates to a method for manufacturing a metal layer and a metal layer manufactured therefrom. Specifically, it relates to a method for manufacturing a metal layer having a three-dimensional fine pattern using a plating process. The fabrication of metal patterns can be performed by depositing a metal film on a substrate and forming a pattern through nanoimprinting/soft lithography or etching processes, or by depositing metal onto a patterned mold to transfer the mold pattern. However, deposition methods have the disadvantage of consuming a significant amount of time and cost due to the vacuum process, and it is difficult to precisely deposit metal on surfaces with three-dimensional patterns due to the linearity inherent to the deposition process. Furthermore, metal pattern fabrication methods using deposition have limitations in that the metal properties of the resulting pattern are poor because the metal material is deposited in the form of particles. Meanwhile, although a method for manufacturing a metal layer having a fine pattern by performing metal electroplating on a patterned mold is known, the formation of metal patterns by the electroplating method has problems such as difficulty in accurately replicating fine patterns and inconsistent thickness of the obtained metal layer. FIG. 1 is a schematic diagram showing the step of obtaining a second solution by aging a first solution containing a thermoplastic resin and a silver salt of the present invention. FIG. 2 is a schematic diagram showing the step of manufacturing a mold having a pattern formed by using the second solution and master mold of the present invention, wherein the pattern has an inverse phase of the pattern of the master mold. FIG. 3 is a schematic diagram showing the step of forming a metal layer with a three-dimensional pattern by performing plating on the mold of the present invention. Figure 4 is a top view SEM image of the copper layers prepared in Examples 1-1(a), 1-2(b), and 1-3(c). Figure 5 shows a top view SEM image (a) of the copper layer prepared in Example 3-3 and a cross-sectional SEM image (b) of the copper layer prepared in Example 1-1. Figure 6 is an SEM image (a) of the cross-section of the copper layer prepared in Example 2 and an SEM image (b) of the protrusion of the copper layer prepared in Example 2. Figure 7 is an SEM image of a cross-section of a copper layer prepared in Examples 3-1(a), 3-2(b), and 3-3(c). Figure 8 is an SEM image of the PAN/Ag mold obtained during the manufacturing process of Example 1-1. Figure 9 shows the EDS spectrum (a) for the PAN/Ag mold obtained during the manufacturing process of Example 1-1 and the silver (Ag) element mapping image (b) of the cross-section of the PAN/Ag mold. Throughout this specification, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Throughout this specification, when a component is described as being located "on" another component, this includes not only cases where a component is in contact with another component, but also cases where another component exists between the two components. Throughout the entire specification, the unit "parts by weight" may refer to the ratio of weight between each component. Throughout this specification, "A and/or B" means "A and B, or A or B". Hereinafter, the present invention will be described in detail with reference to examples to specifically explain the invention. However, the embodiments according to the present invention may be modified in various different forms, and the scope of the present invention is not to be interpreted as being limited to the embodiments described below. The embodiments of this specification are provided to more completely explain the present invention to those with average knowledge in the art. One embodiment of the present invention provides a method for manufacturing a metal layer comprising the steps of: aging a first solution containing a thermoplastic resin and a silver salt to obtain a second solution; manufacturing a mold having an inverse pattern of the pattern of the master mold using the second solution and a master mold; and performing plating on the mold to form a metal layer with a three-dimensional pattern. A method for manufacturing a metal layer according to one embodiment of the present invention can manufacture a metal layer with a uniform thickness in a nano-scale or micro-scale three-dimensional pattern. Another embodiment of the present invention provides a metal layer manufactured by the method according to one embodiment of the present invention and comprising one or more metals selected from copper, nickel, chromium, gold, silver, zinc, and tin. According to one embodiment of the present invention, the thickness of the metal layer may b