KR20200083087A - Conductive composite member and Metal foil being used in the same - Google Patents

Abstract

Disclosed is a metal foil having excellent elastic restoring force against bending. A plurality of openings are formed on the metal foil, and the openings are formed to have a shape for the metal foil to pass through the openings at a certain portion, when the metal foil is cut in a straight line in an arbitrary direction. Therefore, the present invention can provide the conductive composite member with good elasticity recovery against bending.

Description

Conductive composite member and metal foil being used in the same}

The present invention relates to a conductive composite member and a metal foil applied thereto, and more particularly, to a conductive composite member excellent in elastic resilience against bending and a metal foil applied thereto.

Korean Patent Application Publication No. 2018-32191 by the present applicant is interposed between a heat source and a cooling unit and is used to cool the heat of the heat source by transferring heat emitted from the heat source to the cooling unit, a copper foil; A first heat conductive sheet adhered to one surface of the copper foil by first curing; And a second thermal conductive sheet self-adhering to the other side of the copper foil, wherein any one of the first thermal conductive sheet or the second thermal conductive sheet has a self-adhesive force, and the copper foil penetrates the upper and lower surfaces. Disclosed is a heat conducting member, wherein a plurality of through-holes are formed, and the first heat-conducting sheet and the second heat-conducting sheet are connected and integrated through the through-hole.

Here, for example, because the metal foil has a very thin thickness of about 0.005 mm to 0.05 mm, it is easily folded by an external force, and in particular, it is folded better by forming a plurality of through holes.

1 shows a metal foil disclosed in the above-mentioned patent.

A through hole 11 is formed on the front surface of the metal foil 10, and the through hole 11 is formed in a lattice shape and is formed at equal intervals in the width direction and the length direction.

However, the metal foil 10 having the through hole 11 pattern as described above has the following problems.

Since the through holes 11 are formed at equal intervals in the width direction and the length direction, the virtual lines a1, a2, and a3 shown in FIG. 1 do not span all the through holes 11, whereas the virtual lines b1, b2, and b3 Goes through the through hole 11.

As a result, the metal foils 10 do not fold well along the virtual lines because the virtual lines a1, a2 and a3 do not pass through the through hole 11, whereas the virtual lines b1, b2 and b3 are through holes 11 The metal foil 10 is well folded along this virtual line because it passes through.

As described above, since the well-folded portion and the poorly-folded portion are clearly distinguished, when the metal foil 10 is crumpled by an external force, the metal foil 10 is uniformly and smoothly bent as a whole because the well-folded portion is folded intensively. You will not lose.

On the other hand, when viewed from the side of the heat conducting member, even when the metal foil 10 is slightly bent or bent, the thickness of the metal foil 10 is thin over time or with some external force, for example, a heat source and cooling It can be spread by the elastic recovery force of the heat-conducting sheet by being interposed between the sources and pressed, but when the metal foil 10 itself is not uniformly bent, the heat-conducting member does not spread evenly even if the same recovery force of the heat-conducting sheet is applied. .

According to another conventional technique, a plurality of mono filaments (Mono Filament) made of a material such as copper wire, polyester (PET), or glass fiber (Glass Fiber) are woven in a mesh shape (Mesh) sheet), or a plurality of monofilaments made of polymer resin, such as polyester, are positioned in a non-directional direction, and thermal conductivity of a low hardness cured by impregnation of liquid thermally conductive silicone rubber in a nonwoven sheet having a plurality of through holes having various shapes There is no silicone rubber. In such a thermally conductive silicone rubber member, a mesh or a nonwoven fabric provides mechanical strength to a thermally conductive silicone rubber that is hard to handle due to low hardness, thin thickness, and self-adhesiveness, thereby facilitating handling of the thermally conductive silicone rubber.

However, the mash sheet woven with copper wire or monofilament has a limitation in providing a thin and flat thickness of the thermally conductive silicone rubber due to the non-uniform thickness due to the step by weaving, and it is difficult to provide various hole shapes. There is also a phenomenon that the strands (strand or ply) are loosened in the cut portion, and there is a disadvantage that the crumpled by external force by the monofilament may have directionality.

In addition, each wire or monofilament does not adhere to each other in an overlapped portion, and thus, when a force is applied from the outside, the hole size and shape of the mesh are easily deformed.

In addition, the mesh sheet made of polyester or glass fiber is woven with a filament having low conductivity, and thus has a disadvantage that the thermal conductivity of the thermally conductive silicone rubber member is low.

The non-woven fabric sheet is also made of a polymer filament with low thermal conductivity, which has the disadvantage that the thermal conductivity of the thermally conductive silicone rubber member is low, and it is difficult to have uniform thermal conductivity due to the non-uniform dimensions of the hole, and the loosening phenomenon occurs in the cut part. There is a disadvantage that there is.

As another example, for example, a thermally conductive silicone rubber sheet having a thermal conductivity of about 1.5 W/m·K or more, a thin thickness of 0.02 mm, self-adhesiveness, and low hardness of approximately Shore 00 40 When cutting into a constant shape, the cut thermally conductive silicone rubber sheet is thin, the mechanical strength is weak, and it is adhered onto the carrier film by a self-adhesive force, thereby separating the thermally conductive silicone rubber sheet from the carrier film. It has the disadvantage of being difficult.

Accordingly, an object of the present invention is to provide a conductive composite member that is well restored to elasticity against bending.

Another object of the present invention is to provide a conductive composite member that can be folded well without being relatively directional by external force and can be smoothly expanded after being folded.

Another object of the present invention is to provide a conductive composite member having a low hardness, a thin thickness, and having a self-adhesive force on a surface exposed to the outside while being easily separated from a handling or carrier film.

Another object of the present invention is to provide a thermally conductive composite member having a good thermal conductivity in the thickness direction and a thermal conductivity in the plane direction.

Another object of the present invention is to use a planar copper foil to easily maintain a flat surface even at a thin thickness, and the metal foil has two or more shapes with regularly arranged openings, so that the thermal conductivity is relatively uniform overall thermal conductivity composite It is to provide absence.

Another object of the present invention is to provide a thermally conductive composite member having no or no burr at the cutting site after cutting and a metal foil used therein.

Another object of the present invention is to provide a conductive composite member having good productivity by being easy to manufacture in roll-to-roll.

Another object of the present invention is to provide a metal foil and a conductive composite member to which the metal foil is applied, which does not have relatively directionality by an external force and folds smoothly, and then spreads well by an external force or magnetic load.

Another object of the present invention is to provide a conductive composite member that is easy to attach to an object.

The above object is, a metal foil formed with a plurality of openings; And a conductive polymer layer formed by being adhered or adhered so that the opening is filled on at least one side of the metal foil, and the opening passes through the opening at a certain portion when cutting the metal foil in a straight line in an arbitrary direction. It is achieved by a conductive composite member, characterized in that formed to have a shape to be cut.

Preferably, the openings are alternately positioned in the width direction or the longitudinal direction to form a batch pattern, and in openings of the same shape of adjacent batch patterns, the openings of one batch pattern are partially overlapped between the openings of another batch pattern. An interval between the adjacent arrangement patterns may be set.

Preferably, the surface exposed to the outside of the conductive polymer layer may have a self-adhesive power.

Preferably, the opening can be formed by a roll-to-roll process of exposure and chemical etching.

Preferably, a second conductive polymer layer formed by adhesion or adhesion on the other side of the metal foil may be formed, and the conductive polymer layer and the second conductive polymer layer may be the same material, or may have the same or similar thickness.

Preferably, the second conductive polymer layer may be a thermally conductive sheet or an electrically conductive adhesive (tape).

Preferably, the surfaces exposed to the outside of the conductive polymer layer and the second conductive polymer layer may have a self-adhesive force.

The above object is composed of a metal foil in which a plurality of openings are formed, and the opening is formed to have a shape that is cut so as to pass through the opening in a certain portion when cutting the metal foil in a straight line in an arbitrary direction. It is achieved by a metal foil.

The above object is a roll-sheet-shaped metal foil having a constant thickness, in which a plurality of openings are formed in the metal foil, and the opening has the same size and shape in one rectangle longer than the other, so that the roll- The arrangement pattern consisting of a first opening having a long side in the width direction of the sheet and a second opening having a long side in the length direction, wherein the first and second openings are alternately positioned in the width direction to form A metal characterized in that the intervals between the adjacent batch patterns are set such that the second openings of one batch pattern are partially overlapped between the second openings of another batch pattern in a continuous repeating pattern in the longitudinal direction. It is achieved by Park.

The above object is a roll-sheet-shaped metal foil having a constant thickness, in which a plurality of openings are formed in the metal foil, and the opening has the same size and shape in one rectangle longer than the other, so that the roll- The arrangement pattern consisting of a first opening having a long side in the width direction of the sheet and a second opening having a long side in the length direction, wherein the first and second openings are alternately positioned in the width direction to form A metal characterized in that the intervals between the adjacent batch patterns are set such that the second openings of one batch pattern are partially overlapped between the second openings of another batch pattern in a continuous repeating pattern in the longitudinal direction. It is achieved by Park.

The above object is, a metal foil formed with a plurality of openings; And a conductive polymer layer formed by being adhered or adhered to at least one surface of the metal foil, wherein the surface exposed to the outside of the conductive polymer layer has a self-adhesive force, and the total area of the opening in the total area of the metal foil. This proportion (opening rate) is 20% to 85%, the metal foil is a copper foil, and the thickness of the conductive polymer layer is achieved by a conductive composite member characterized in that it is thicker than the thickness of the metal foil.

Preferably, the conductive polymer layer may be formed by filling the opening, and a second conductive polymer layer may be adhered or adhered to the other surface of the metal foil.

Preferably, one surface of the metal foil has a rougher surface than the other surface, and the conductive polymer layer may be formed on the rough surface.

Preferably, the conductive polymer layer has elasticity and the elongation may be greater than the elongation of the metal foil.

The conductive composite member of the present invention improves the resilience to wrinkles or warpage by the polymer layer having elasticity, and in particular, the resilience to wrinkles or warpage caused by external force is improved by the polymer filled in the opening of the metal foil.

In addition, since the well-folded portion of the metal foil and the poorly-folded portion are not clearly distinguished, when the metal foil is crumpled or bent by external force or magnetic load, the metal foil is generally relatively uniform and smoothly bent or bent well, and thereafter external force, magnetic Overall, it is relatively uniform and smoothly spread well by the load, the polymer layer or the polymer filled in the opening, so that it is easy to maintain a flat surface.

In addition, when the metal foil is folded by an external force, it has the advantage that it can be folded relatively uniformly and smoothly, and uniformly and smoothly, because it is folded through the opening in any direction and folded as a whole.

In addition, the thermal conductivity of the copper foil and the polymer layer is different, and the number, dimension, or shape of the openings of the metal foil can be adjusted to provide a thermally conductive composite member having a thermal conductivity in the surface direction greater than a thermal conductivity in the thickness direction.

In addition, the copper foil with high purity has good thermal conductivity, and the conductive polymer layer having self-adhesive strength and elasticity can be effectively pressed to transfer the heat of the opposing object because it is pressed.

In addition, the openings of the planar metal foil are regularly arranged in a predetermined shape to provide relatively uniform thermal conductivity as a whole.

In addition, it is easy to provide a conductive composite member of a thin thickness plane having self-adhesiveness by a flat metal foil, and at least one surface of the metal foil has a rough surface, so that it is well adhered or adhered to the polymer layer, resulting in adhesion. However, the adhesion area is large and the thermal resistance between the metal foil and the polymer layer is small.

In addition, it is easy to handle and process, such as moving a conductive composite member including a conductive polymer layer having a low self-adhesive strength and moving it away from a carrier film or separating it from a carrier film by a planar metal foil having mechanical strength. No loosening or less burrs.

In addition, the thickness of the metal foil is thinner than the thickness of the polymer layer having elasticity formed by adhesion or adhesion to the metal foil, and the elongation of the polymer layer is better than the elongation of the metal foil, so that the conductive composite member is easily restored or expanded after being bent or warped. .

In addition, a conductive polymer layer having a self-adhesive force is formed on both the upper and lower surfaces of the metal foil, which makes it easy to attach the conductive composite member to the object.

In addition, since the metal foil made of roll is continuously exposed and etched, a large number of formed metal foils are manufactured in roll-to-roll, so productivity is good.

1 shows a metal foil disclosed in the related art.
2 is a plan view showing a metal foil according to an embodiment of the present invention.
3(a) and 3(b) are cross-sectional and bottom views respectively showing a conductive composite member according to an embodiment of the present invention.
4 is a cross-sectional view showing a conductive composite member according to another embodiment of the present invention.
5 shows a conductive composite member according to another embodiment of the present invention.

It should be noted that the technical terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention, and the technology to which the present invention belongs, unless otherwise defined in the present invention It should be interpreted as meanings that are generally understood by those of ordinary skill in the field, and should not be interpreted as excessively comprehensive meanings or excessively reduced meanings. In addition, when the technical term used in the present invention is a wrong technical term that does not accurately represent the spirit of the present invention, it should be understood as being replaced by a technical term that can be correctly understood by those skilled in the art. In addition, the general terms used in the present invention should be interpreted as defined in the dictionary or in context before and after, and should not be interpreted as an excessively reduced meaning.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and these embodiments are provided only to those of ordinary skill in the art to which the present invention pertains for thorough understanding of the present invention. Be careful.

2 is a plan view showing a metal foil according to an embodiment of the present invention.

The metal foil 100 is formed in a continuous and constant thickness in a roll-sheet shape, for example, 0.007 mm to 0.1 mm, and may be composed of copper, copper alloy, aluminum or aluminum alloy having good thermal conductivity, in particular, thermal conductivity and Pure copper is preferred because it has good electrical conductivity and relatively low mechanical strength, so that the copper component that can be bent or stretched with a small force is 99% or more.

The metal foil 100 preferably has a thin thickness to provide a thin conductive conductive member that bends and spreads well even with a small force, but the overall thickness of the conductive composite member, thermal conductivity, and the number and shape of the openings 110 Considering this, it can be thicker.

A plurality of openings 110 are formed in the metal foil 100. The opening 110 is preferably a cutting line opening 112, 114 in a certain portion when cutting the metal foil 100 in a straight line in an arbitrary direction. ).

Here, the thickness of the metal foil 100 and the shape of the opening 110 may be different in consideration of the crumpling force, the unfolding force of the metal foil 100 and the conductive composite member, and the inherent properties of the metal foil 100 material. However, the ratio of the total area of the opening 110 to the total area of the metal foil 100 (opening rate) is preferably 20% to 85%, but is not limited thereto.

Here, the inside and sidewalls of the opening 110 are preferably formed by adhesion or adhesion of the thermally conductive or electrically conductive polymer layer 120, so the size of the opening 110 is thermally conductive powder applied to the polymer layer 120 or It is preferable that it is larger than the size of the electrically conductive powder.

The opening 110 is preferably, the openings 112 and 114 having two or more shapes are regularly arranged in a predetermined shape to provide relatively uniform overall thermal conductivity of the conductive composite member.

In this embodiment, the openings 112 and 114 are formed in the same shape and size in one rectangle having one side longer than the other, but are not limited to the rectangle.

In FIG. 2, the opening 110 is a square, but is not limited thereto, for example, an oval or a rounded corner may be applied.

The openings 112 and 114 can be easily and economically formed by a roll-to-roll process in a roll-sheet form by chemical etching or press mold according to exposure.

The openings 112 and 114 are preferably formed by exposure and etching in order to effectively form a plurality of relatively small openings 112 and 114 in the thin metal foil 100.

Here, when the openings 112 and 114 are formed by etching, a carrier film on which an adhesive is formed is previously attached to one surface of the metal foil 100, and then etching is performed to form the openings 112 and 114, and then the corresponding carrier film Can be separated.

The openings 110 are continuously arranged in a constant pattern. The openings 112 in the width direction and the openings 114 in the longitudinal direction are mixed and arranged.

That is, referring to FIG. 2, in the portion A indicated by a dotted line, four openings 112 and three openings 114 are alternately arranged in the width direction to form a first arrangement pattern, and the portion B has three openings 112 ) And four openings 114 are alternately arranged in the width direction to form a second placement pattern.

The first and second arrangement patterns of the opening 110 are continuously formed alternately along the longitudinal direction.

At this time, as shown in the enlarged circle, the opening 112' of the first batch pattern and the opening 114 of the second batch pattern are disposed adjacent to each other, and the end portion of the opening 114 of the second batch pattern is the first. The spacing is adjusted to partially overlap the openings 114' and 114" of the placement pattern.

According to this structure, the virtual lines b1 and b2 shown in FIG. 2 span all the openings 112 and 114, while the virtual lines a1 and a2 span only one of the openings 112 and 114, and the virtual line a3 in the diagonal direction , b3 spans all openings 112 and 114.

As a result, the metal foils 100 are well folded along the virtual lines b1, b2 and a3, b3 passing through all the openings 112, 114, and the virtual lines a1, a2 spanning only one of the openings 112, 114 The metal foil 100 is folded or crumpled to the middle.

In other words, compared to the virtual line passing through all the openings 112 and 114, it can be said to be folded, creased, or bent relatively smoothly compared to the conventional one because it is less folded, creased, or bent, but passes at least some of the openings.

As described above, since the well-folded portion and the poorly-folded portion are not clearly distinguished, when the metal foil 100 is crumpled by an external force, the external force is distributed in various directions, so that it is folded smoothly and uniformly on average throughout. The metal foil 100 is bent to be soft or uniformly bent or bent as a whole.

In this embodiment, since the openings 112 and 114 have a rectangular shape with a longer side than the other side, adjacent openings 114 and openings 114' and 114" overlap each other even though they have the same shape and size. It can be done.

On the other hand, as shown by the dotted line in the enlarged circle of FIG. 2, a somewhat wide portion surrounded by openings 112 and 114 is formed, which is distributed on the front surface of the metal foil 110 so that the metal foil 110 has a constant strength. And the thermal conductivity in the surface direction of the conductive composite member is better than the thermal conductivity in the thickness direction.

3(a) and 3(b) are cross-sectional and bottom views respectively showing a conductive composite member according to an embodiment of the present invention.

The conductive polymer is adhered or adhered on the metal foil 100 so that the conductive polymer is filled in the openings 112 and 114 of the metal foil 100 to form a flat conductive polymer layer 120 to form a conductive composite member.

According to this configuration, the conductive composite member has an improved number and shape of openings, and flexibility and elasticity of the polymer layer 120 to improve resilience to wrinkles and warpage.

In particular, compared to the case where the polymer layer 121 is formed only on the metal foil 100 by forming the polymer layer 122 by filling the opening 112 and 114 with a polymer, the openings 112 and 114 are excluded. Since the total area of the polymer layer 120 is larger than the total area of the metal foil 100, the resilience to bending of the metal foil 100 is improved.

Preferably, the polymer layer 120 has elasticity and elongation is better than that of the metal foil 100 so that the conductive composite member can be easily flattened or flat after being bent or bent by external force or magnetic load.

The thickness of the metal foil 100 may be thinner than the thickness of the conductive polymer layer 120. Since the thickness of the conductive polymer layer 120 is thick, it can be more pressed when the same force is applied, and is easily flattened or flat after being bent or bent. You can keep it. For example, the thickness of the metal foil 100 may be 0.007 mm to 0.1 mm, and the thickness of the conductive polymer layer 120 may be 0.02 mm to 0.4 mm.

One surface of the metal foil 100, that is, the surface on which the polymer layer 120 is formed, has a rough surface, so that adhesion or adhesion to the polymer layer 120 is good, and the adhesion or adhesion area is large, resulting in the metal foil 100 and the polymer. It reduces the thermal resistance between the layers 120.

The conductive polymer layer 120 may be made of, for example, a low-viscosity silicone rubber putty or silicone rubber material having elasticity and flexibility, and has thermal conductivity or electrical conductivity. However, the polymer layer 120 of the present invention may be made of a low viscosity acrylic resin material having thermal conductivity or electrical conductivity, and in this case also has some elasticity.

Preferably, the surface exposed to the outside of the polymer layer 120 has a self-adhesive force to improve mechanical contact with the opposing object, thereby reducing thermal resistance and making it easy to adhere to the object.

For example, to provide thermal conductivity, the conductive polymer layer 120 is a metal foil having openings 112 and 114 for supplying a liquid silicone rubber in which a thermally conductive inorganic powder of electrical insulation such as alumina powder or aluminum nitride powder is mixed into a roll. It can be produced by continuously casting and curing on one side of (100), and the liquid silicone rubber is self-adhesive or adhered to the metal foil 100 during the curing process.

Preferably, the thermal conductivity of the conductive polymer layer 120 is 1 to 9 W/m.K.

Here, since the conductive polymer layer 120 has a self-adhesive power, when casting a liquid silicone rubber, a fluorine-coated carrier film is attached to the other surface of the metal foil 100 and then cast.

Here, when the conductive polymer layer 120 is electrically conductive, metal powder, carbon powder or carbon fiber may be used.

The hardness of the conductive polymer layer 120 is preferably a low-viscosity silicone rubber capable of contacting and compressing the opposing object with a small force, but may have a low hardness of, for example, Shore 00 20 to 55, but is not limited thereto. .

When the conductive polymer layer 120 has low hardness, thin thickness, and self-adhesiveness, it is difficult to move it to another place or separate it from the carrier film if it is made of only the conductive polymer layer 120, but it is a flat metal foil with somewhat mechanical strength. The conductive composite member is easily handled and separated by the metal foil 100 because it is adhered or adhered onto the 100.

When the liquid silicone rubber is cast to the metal foil 100, a part of the liquid silicone rubber is filled in the openings 112 and 114 formed in the metal foil 100 and then cured to form the polymer layer 122 to form the metal foil 100 ) It is integrated with the polymer layer 121 formed on. That is, the polymer layer 121 formed on the metal foil 100 and the polymer layers 122 filled in the openings 112 and 114 are integrally formed in the same process with the same material.

In the conductive composite member, when the metal foil 100 is bent or crumpled by an external force, when the metal foil 100 is thin, it may be stretched by elastic recovery force of the conductive polymer layers 121 and 122, the metal foil 100 Since the material itself is bent or bent uniformly without relatively directionality, the elastic recovery force of the conductive polymer layers 121 and 122 is uniformly applied, so that the conductive composite member is uniformly spread throughout.

The thermal conductivity of the conductive composite member thus manufactured may be 10 to 50 W/m.K in the plane direction and 1 to 9 W/m.K in the thickness direction.

4 is a cross-sectional view showing a conductive composite member according to another embodiment of the present invention.

The conductive polymer layers 121, 122, and 123 are formed inside the upper and lower surfaces of the metal foil 100 and the openings 112 and 114, so that only the side surfaces of the metal foil 100 are exposed to the outside.

The conductive polymer layer 123 may be made of the same material as the other conductive polymer layers 121 and 122 in the same manufacturing process or may be formed of different materials in different manufacturing processes.

The exposed portion of the conductive polymer layer 123 has a self-adhesive power.

For example, in the case where the conductive polymer layer 123 is made of the same manufacturing process with the same material as the conductive polymer layers 121 and 122, the conductive polymer layer 123 can be contacted with a target object with little force and pressed a lot. It may be a low-viscosity silicone rubber putty, or a silicone rubber having a hardness of about Shore 25 to 55.

The conductive composite member having such a plane is filled with conductive polymer layers 121 and 123 and openings 112 and 114 formed by being adhered or adhered to the upper and lower surfaces of the metallic foil 100 of the plane in which the openings 112 and 114 are formed. It is composed of the polymer layer 122, and has good mechanical strength as a whole, so it is easy to handle and separate, and can be stretched and bent and contacted with an elastic object after being bent or bent.

Preferably, the thickness and color of the conductive polymer layer 123 are the same as or similar to the thickness or color of the polymer layer 121, so that there is no directionality in bending or bending of the conductive composite member, and the upper and lower surfaces of the conductive composite member are the same. Therefore, there is no need to distinguish between the upper and lower surfaces during handling or processing.

For example, when the conductive polymer layer 123 is made of a material different from the conductive polymer layer 121 and a different manufacturing process, the conductive polymer layer 123 is electrically conductive with a self-adhesive power capable of adhering to an object to be opposed. It may be an adhesive (tape).

The conductive composite member of this embodiment is composed of conductive polymer layers 121 and 123 formed by adhesion or adhesion to the upper and lower surfaces of the metal foil 100 and conductive polymer layers 122 filled in the openings 112 and 114, respectively.

Preferably, the surface exposed to the outside of the conductive polymer layer 123 has a self-adhesive force and can adhere to the opposite object.

Here, when the conductive polymer layer 123 is an electrically conductive adhesive (tape), a product of the technology currently present in the market can be selected and applied according to the use purpose, and the electrically conductive adhesive (tape) is provided with or without a substrate. It may not be, it may adhere to the opposite electrically conductive member, for example, a shield case (Shield case) to serve as electromagnetic shielding and electrical grounding.

When the conductive polymer layer 120 is thermally conductive, the conductive composite member is a thermally conductive sheet, and when it is electrically conductive, the conductive composite member may be an EMI gasket or an EMI shielding film, and the EMI shielding film may be a solderable conductive adhesive tape. Can.

Here, the conductive polymer layer 123 is electrically insulating and may have thermal conductivity.

5 shows a conductive composite member according to another embodiment of the present invention.

The conductive composite member of FIG. 5(a) is a conductive tape 220 adhered to at least one surface of the metal foil 200, based on the flat metal foil 200 having a plurality of openings 112 and 114 formed thereon. Can be configured.

The conductive tape 220 may or may not have a base material, and the opposite surface of the surface contacting the metal foil 200, that is, the surface exposed to the outside, has a self-adhesive force.

Here, the conductive tape 220 is electrically conductive or electrically insulating and may be thermally conductive.

In this embodiment, the openings 212 and 214 remain empty by casting the conductive adhesive 230 by laminating it onto the metal foil 200 rather than casting the conductive adhesive onto the metal foil 200. .

In this embodiment, even if the conductive tape 230 is formed with the openings 212 and 214 empty, the elongation, hardness, and thickness of the conductive polymer layer 120 are adjusted to consequently, the conductive composite member is bent evenly or well. It can be bent and spread evenly afterwards.

Preferably, the conductive tape 230 may be provided by mixing a metal powder or a thermally conductive ceramic powder with silicone rubber or acrylic adhesive resin.

The conductive composite member using the electrical conductivity as the conductive tape 230, the exposed surface of the electrically conductive tape 220 is attached to the metal object, for example, by wrapping and attaching a copper wire, the metal foil 200 surface is a metal member and It can be used by soldering with solder. In this case, the composite member and the metal member have low electrical contact resistance and strong bonding strength by soldering.

Preferably, in the case of the electrically conductive tape 220, the upper and lower electrical resistance is less than 1 ohm.

The metal foil 200 of this embodiment may preferably be a copper foil plated with poor oxidation and good soldering and good conductivity.

The conductive composite member of FIG. 5(b) is based on the metal foil 200, and the conductive tape 230, which has already been prepared on at least one surface of the metal foil 200, is laminated on the metal foil 200 to adhere. , The conductive tape 230 is compressed with pressure or heat and pressure to fill at least a portion of the openings 212 and 214 with a conductive adhesive.

Here, the conductive tape 230 is electrically conductive or electrically insulating and may be thermally conductive.

These conductive tapes can also be applied to the purpose of soldering after wrapping a metal appliance such as a flexible wire or LCD panel, as it is easily crumpled as a whole and easily spread as a whole, and flexible in all directions, such as the advantages described in the other embodiments. have.

Preferably, the surfaces of the conductive composite member of the conductive composite member of the present invention in all of the above embodiments are formed in a plane.

The above-described contents may be modified and modified without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

100, 200: metal foil
110, 112, 114: opening
120, 121, 122, 123: conductive polymer layer

Claims (23)

A metal foil with a plurality of openings; And
It is composed of a conductive polymer layer formed by adhesion or adhesion so that the opening is filled on at least one side of the metal foil,
The opening, the conductive composite member characterized in that it is formed to have a shape that is cut to pass through the opening in a certain portion when cutting the metal foil in a straight line in any direction. In claim 1,
The openings are alternately positioned in the width direction or the length direction to form a placement pattern,
Conductive composite member characterized in that in the opening of the same shape of the adjacent batch pattern, the gap between the adjacent batch patterns is set such that the opening of one batch pattern partially overlaps the opening of the other batch pattern. In claim 1,
A conductive composite member characterized in that the surface exposed to the outside of the conductive polymer layer has a self-adhesive power. In claim 1,
The opening is a conductive composite member, characterized in that formed by a roll-to-roll process of exposure and chemical etching. In claim 1
A conductive composite member characterized in that a second conductive polymer layer formed by adhesion or adhesion is formed on the other side of the metal foil. In claim 5
The conductive composite layer is characterized in that the conductive polymer layer and the second conductive polymer layer are the same material. In claim 5
The conductive polymer layer and the second conductive polymer layer is a conductive composite member, characterized in that the same or similar thickness. In claim 5
The second conductive polymer layer is a conductive composite member, characterized in that a thermally conductive sheet or an electrically conductive adhesive (tape). In claim 5,
Conductive composite member, characterized in that the conductive polymer layer and the surface exposed to the outside of the second conductive polymer layer has a self-adhesive force. In claim 1,
The metal foil is a conductive composite member, characterized in that the copper foil of pure copper. It consists of a metal foil with a large number of openings,
The opening, the metal foil is formed to have a shape that is cut to pass through the opening in a certain portion when cutting the metal foil in a straight line in any direction. In claim 11,
The openings are alternately positioned in the width direction or the length direction to form a placement pattern,
A metal foil, characterized in that in the openings of the same shape of adjacent batch patterns, the spacing between the adjacent batch patterns is set such that the openings of one batch pattern partially overlap between the openings of another batch pattern. A roll-sheet-shaped metal foil having a constant thickness,
A plurality of openings are formed in the metal foil,
The opening is composed of a first opening having a long side in the width direction of the roll-sheet, and a second opening having a long side in the longitudinal direction, having one side having the same size and shape in a rectangle longer than the other side,
The arrangement pattern formed by alternately positioning the first and second openings in the width direction is continuously repeated in the longitudinal direction,
The metal foil, characterized in that the spacing between the adjacent batch patterns is set so that the second openings of one batch pattern in the adjacent batch patterns partially overlap between the second openings of the other batch pattern. A roll-sheet-shaped metal foil having a constant thickness,
A plurality of openings are formed in the metal foil,
The opening is composed of a first opening having a long side in the width direction of the roll-sheet, and a second opening having a long side in the longitudinal direction, having one side having the same size and shape in a rectangle longer than the other side,
The arrangement pattern formed by alternately positioning the first and second openings in the width direction is continuously repeated in the longitudinal direction,
The metal foil, characterized in that the spacing between the adjacent batch patterns is set so that the second openings of one batch pattern in the adjacent batch patterns partially overlap between the second openings of the other batch pattern. A metal foil in which a plurality of openings are formed; And
It consists of a conductive polymer layer formed by adhesion or adhesion on at least one side of the metal foil,
The surface exposed to the outside of the conductive polymer layer has a self-adhesive force,
The ratio of the total area of the opening to the total area of the metal foil (opening rate) is 20% to 85%,
The metal foil is a copper foil, and the conductive polymer layer has a thickness greater than that of the metal foil. In claim 15,
The conductive polymer layer is a conductive composite member, characterized in that also formed in the opening. In claim 15,
Conductive composite member, characterized in that the second conductive polymer layer is formed by adhesion or adhesion on the other side of the metal foil. In claim 15,
The conductive polymer layer is an electrically conductive adhesive tape, characterized in that the conductive composite member. In claim 1 or 15,
A conductive composite member characterized in that one side of the metal foil is rougher than the other side and the conductive polymer layer is formed on the rough side. In claim 1 or 15,
The conductive composite member is a thermally conductive sheet, an electrically conductive EMI gasket or an EMI shielding film. In claim 20,
The EMI shielding film is a conductive composite member, characterized in that a conductive adhesive tape capable of soldering. In claim 1 or 15,
The conductive polymer layer has elasticity and the elongation is greater than the elongation of the metal foil. In claim 1 or 15,
The conductive composite member is characterized in that the thermal conductivity in the plane direction is better than the thermal conductivity in the thickness direction.

Images