KR101319460B1 - Thermal Diffusion Sheet Method - Google Patents

Thermal Diffusion Sheet Method Download PDF

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KR101319460B1
KR101319460B1 KR1020110102187A KR20110102187A KR101319460B1 KR 101319460 B1 KR101319460 B1 KR 101319460B1 KR 1020110102187 A KR1020110102187 A KR 1020110102187A KR 20110102187 A KR20110102187 A KR 20110102187A KR 101319460 B1 KR101319460 B1 KR 101319460B1
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South Korea
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adhesive
carbon fiber
thermal diffusion
sheet
fiber mat
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KR1020110102187A
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Korean (ko)
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KR20130037774A (en
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최병익
김성환
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실리콘밸리(주)
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/027—Thermal properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/28—Metal sheet
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H05K7/20154—Heat dissipaters coupled to components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • H05K7/20409—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing
    • H05K7/20427—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing having radiation enhancing surface treatment, e.g. black coating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing

Abstract

본 발명은 각종 전자기기의 평판 디스플레이패널 이면에 부착되어 평판 디스플레이패널에서 발생되는 열을 확산되도록 한 열확산시트에 관한 것으로, 더 상세하게 설명하면, 양면에 점착제가 도포 된 알루미늄시트의 일면에 그라파이이트 계열의 열확산층을 구성하되, 상기 열확산층은 적정 틈새를 가진 부직포형태의 탄소섬유매트로 구성하여서, 열 압착에 의해 완성되는 제조방식으로 탄소섬유매트의 틈새에 점착제가 녹으면서 점착제와 탄소섬유매트가 일체화되어 알루미늄시트 일면에 직결부착되도록 함으로써, 저비용으로 용이한 제작이 가능하고, 구조가 간단하고 얇으면서도, 열전달과 열확산이 신속하게 이루어지도록 한 열확산시트 및 그 제조방법을 제공한다.The present invention relates to a thermal diffusion sheet attached to the rear surface of a flat panel display panel of various electronic devices to diffuse heat generated from the flat panel display panel, and more specifically, to one surface of an aluminum sheet coated with an adhesive on both sides, The thermal diffusion layer is composed of a non-woven carbon fiber mat having a proper gap, and the pressure-sensitive adhesive and carbon fiber are melted in the gap of the carbon fiber mat in a manufacturing method completed by thermal compression. Since the mat is integrated and directly attached to one surface of the aluminum sheet, it is possible to easily manufacture at a low cost, and to provide a heat diffusion sheet and a method of manufacturing the same, the structure is simple and thin, and the heat transfer and heat diffusion are performed quickly.

Description

열확산시트의 제조방법{Thermal Diffusion Sheet Method}Manufacturing method of thermal diffusion sheet {Thermal Diffusion Sheet Method}

본 발명은 각종 전자기기의 평판 디스플레이패널 이면에 부착되어 평판 디스플레이패널에서 발생되는 열을 확산되도록 한 열확산시트 및 그 제조방법에 관한 것으로, 더 상세하게 설명하면, 평판 디스플레이패널에서 발생되는 열을 열확산층으로 신속하게 전달하도록 알루미늄시트를 구성하고, 상기 열확산층은 적정 틈새를 가진 부직포형태의 탄소섬유매트가 알루미늄시트의 이면에 점착제와 일체로 직결부착되도록 하여, 알루미늄시트의 열을 탄소섬유매트에서 바로 확산되도록 함으로써, 열전달과 열확산효율이 월등히 향상되도록 한 열확산시트 및 그 제조방법에 관한 것이다.
The present invention relates to a thermal diffusion sheet and a method for manufacturing the same, which are attached to the rear surface of a flat panel display panel of various electronic devices to diffuse heat generated from the flat panel display panel. The aluminum sheet is configured to be quickly transferred to the layer, and the thermal diffusion layer allows a non-woven carbon fiber mat having a proper gap to be directly attached to the back side of the aluminum sheet integrally with the adhesive, thereby transferring the heat of the aluminum sheet to the carbon fiber mat. The present invention relates to a thermal diffusion sheet and a method for manufacturing the same, which are capable of being immediately diffused to significantly improve heat transfer and thermal diffusion efficiency.

일반적으로 텔레비젼, 모니터, 노트북, 휴대폰, 등과 같이 디스플레이 패널로 컨텐츠가 출력되는 전자기기는 상기 컨텐츠를 출력하기 위해 디스플레이 패널에 장치된 각종 발광소자에 의해 열이 발생하게 되는데, 상기에서 발생되는 열을 제대로 확산시켜주지 못할 경우 컨텐츠의 선명도와 색상도 등이 떨어지는 잔상문제와, 고압 발생부에서는 전기 쇼트를 일으키는 등의 제품의 수명을 단축시킬 수 있음은 물론이거니와, 제품의 고장, 오작동을 유발하여 제품의 신뢰성을 떨어뜨릴 수 있으며, 심한 경우에는 폭발 및 화재의 원인을 제공하기도 한다.
In general, an electronic device that outputs content to a display panel such as a television, a monitor, a notebook, a mobile phone, and the like, generates heat by various light emitting devices installed in the display panel to output the content. If it is not spread properly, the afterimage problem that the content of clarity and color falls, and the high-pressure generator may shorten the life of the product, such as causing an electric short, and also cause the product to malfunction or malfunction. May reduce reliability and, in severe cases, may cause an explosion or fire.

이에, 상기 평판 디스플레이패널에서 발생되는 열을 확산시켜주기 위해 사용되는 종래의 일 예로 이형지, 접착제, 양측 접착제 지지용 PET필름, 접착제, 열확산 판재용 그라파이트가 순차적으로 접합된 적층구조의 열확산판이 일반적이다.
Thus, as a conventional example used to diffuse heat generated in the flat panel display panel, a thermal diffusion plate having a laminated structure in which a release paper, an adhesive, a PET film for supporting both sides of the adhesive, an adhesive, and a graphite for thermal diffusion plate are sequentially joined together is generally used. .

상기 열확산판은 사용시 일면의 이형지를 떼어내고 접착제을 평판 디스플레이패널에 부착시켜 평판 디스플레이패널에서 발생되는 열을 그라파이트에서 확산시키도록 되어 있다.
The thermal diffusion plate removes the release paper on one surface and attaches an adhesive to the flat panel display panel to diffuse heat generated from the flat panel panel in graphite.

그러나, 상기와 같은 열확산판은 먼저 그라파이트가 분말체를 소결한 판재형태로 비교적 가격이 비싸고, 파손 및 균열이 쉽게 발생되며, 소재의 특성상 가루가 날리면서 전기 쇼트가 빈번하게 발생되고, 시스템의 고장이 심한 문제점을 안고 있었다.
However, the thermal diffusion plate as described above is a relatively high price in the form of graphite sintered powder, the breakage and cracks easily generated, due to the nature of the material, the electrical short occurs frequently due to the powder flying, failure of the system I had this severe problem.

또한, 상기 그라파이트는 상술한 바와 같이 분말체를 소결한 것이므로 접착제과의 결합이 원활하지 않아 결착력이 떨어짐은 물론, 판재로 이루어져 무겁기 때문에 평판 디스플레이패널의 패널에서 잘 떨어지고, 평판 디스플레이패널의 형태에 따라 굴곡부 등에는 긴밀한 접촉을 달성할 수 없을 뿐 아니라 디스플레이의 형태에 상응하도록 그라파이트 판을 제작하여야 하는 문제가 수반된다.
In addition, since the graphite is a sintered powder as described above, the bonding with the adhesive is not smooth, the binding force is reduced, as well as a heavy plate made of a plate material fall off well from the panel of the flat panel, the curved portion according to the shape of the flat panel The back is not only able to achieve intimate contact, but also involves the problem of making the graphite plate corresponding to the shape of the display.

한편, 상기와 같이 그라파이트의 균열, 파손, 가루날림 등을 방지하기 위해서는 그라파이트의 일면에 접착제과 보호용 PET필름 등을 부가적으로 구성하여야 하는데, 이로 인해 구조가 더 복잡해 짐은 물론, 제조가 더 까다로운 또 다른 문제점을 야기하였다.
On the other hand, in order to prevent the cracks, breakage, powder blowing, etc. of the graphite as described above, an adhesive and a protective PET film must be additionally configured on one surface of the graphite, which makes the structure more complicated and also makes the manufacturing more difficult. It caused another problem.

그리고, 상술한 바와 같이 그라파이트는 판재로 되어 무겁기 때문에 평판 디스플레이패널과 그라파이트 측과의 견고한 결착력을 갖도록 하기 위해 중간에 지지층용 PET필름이 구성되는 데, 상기와 같은 PET필름은 평판 디스플레이패널에서 발생되는 열을 그라파이트 측으로 전달하는 것을 오히려 차단하게 되어 열확산 효율이 떨어지는 결과를 초래하게 되었다.
And, as described above, since the graphite is heavy as a plate material, a PET film for a support layer is formed in the middle so as to have a firm binding force between the flat panel and the graphite display panel. It would rather block the transfer of heat to the graphite side, resulting in poor thermal diffusion efficiency.

한편, 종래에 제안된 열확산시트들의 구성 중, 열확산용으로 흑연시트, 탄소섬유, 혼합카본시트, 등의 그라파이트계열을 주로 이용한 바 있고, 열전달용으로는 알루미늄, 구리, 열전도성 필라, 등을 이미 사용한 바 있다.Meanwhile, among the conventionally proposed thermal diffusion sheets, graphite series such as graphite sheet, carbon fiber, mixed carbon sheet, and the like are mainly used for thermal diffusion, and aluminum, copper, and thermally conductive pillars have already been used for heat transfer. I used it.

그러나, 이들을 이용하여 제조된 종래의 열확산시트들은 적층구조나 형태가 복잡함은 물론, 적층구조나 형태에 따른 제조방식이 까다로워 그에 따른 비용, 시간, 인력, 등이 많이 소모되는 문제점을 안고 있었다.
However, the conventional thermal diffusion sheets manufactured by using them have a problem in that the lamination structure or form is complicated, as well as the manufacturing method according to the lamination structure or form is difficult, resulting in cost, time, manpower, and the like.

이에 본 발명은 상기와 같은 종래의 문제점을 해소하기 위해 개발된 것으로, 특히 양면에 점착제가 도포 된 알루미늄시트의 일면에 그라파이이트 계열의 열확산층을 구성하되, 상기 열확산층은 적정 틈새를 가진 부직포형태의 탄소섬유매트로 구성하여서, 열 압착에 의해 완성되는 제조방식으로 탄소섬유매트의 틈새에 점착제가 녹으면서 점착제와 탄소섬유매트가 일체화되어 알루미늄시트 일면에 직결부착되도록 함으로써, 저비용으로 용이한 제작이 가능하고, 구조가 간단하고 얇으면서도, 열전달과 열확산이 신속하게 이루어지도록 함에 그 목적이 있다.
Therefore, the present invention was developed to solve the conventional problems as described above, and in particular, a graphite-based thermal diffusion layer is formed on one surface of an aluminum sheet coated with a pressure-sensitive adhesive on both sides, and the thermal diffusion layer is a nonwoven fabric having an appropriate gap. Consisting of carbon fiber mat in the form, the adhesive is melted in the gap of the carbon fiber mat in the manufacturing method completed by thermal compression, so that the adhesive and the carbon fiber mat are integrated and directly attached to one surface of the aluminum sheet, thereby making it easy and inexpensive. Its purpose is to make it possible to carry out heat transfer and heat diffusion quickly while being simple and thin in structure.

상기 목적을 달성하기 위해 본 발명에서 제공하는 열확산시트에 따르면, 이형지, 열전도성필라가 함유된 점착제, 열전도용 알루미늄시트, 열전도성필라가 함유된 점착제 및 이 점착제과 일체로 되는 적정 틈새를 가진 부직포형태의 열확산용 탄소섬유매트, 그리고 보호용 PET필름이 순차적으로 구성됨을 특징으로 한다.According to the thermal diffusion sheet provided by the present invention in order to achieve the above object, a release paper, a pressure-sensitive adhesive containing a thermally conductive pillar, a thermally conductive aluminum sheet, a pressure-sensitive adhesive containing a thermally conductive pillar and a non-woven fabric having a proper gap integral with the pressure-sensitive adhesive. Thermal diffusion carbon fiber mat, and the protective PET film is characterized in that the configuration sequentially.

그리고, 상기 열확산시트의 제조방법은, 이형지, 열전도성필라가 함유된 점착제, 열전도성 알루미늄시트, 열전도성필라가 함유된 점착제, 적정 틈새를 가진 부직포형태의 열확산용 탄소섬유매트, 보호용 PET필름를 순차적으로 적층하는 시트적층단계, 상기에서 적층된 시트의 PET필름 상면에 PET필름이 녹지않을 정도의 열로 압착하는 열압착단계, 상기 열압착단계에 의해 전체적으로 시트 두께가 얇아짐은 물론, 알루미늄 상측의 점착제가 녹으면서 탄소섬유매트의 틈새에 스며들고, 그 상면에 PET필름이 탄소섬유매트와 일체로 된 점착제에 부착되어서 완성되는 열확산시트의 제조방법을 통해 달성할 수 있다.
In addition, the method of manufacturing the thermal diffusion sheet, release paper, thermally conductive adhesive containing adhesive, thermally conductive aluminum sheet, thermally conductive adhesive containing adhesive, carbon fiber mat for thermal diffusion of a nonwoven fabric having a proper gap, protective PET film in sequence. The sheet lamination step of laminating by the step, the thermocompression step of pressing the PET film on the upper surface of the PET film of the laminated sheet so as not to melt, the overall thickness of the sheet by the thermal pressing step, as well as the pressure-sensitive adhesive on the aluminum side Is melted into the gap of the carbon fiber mat, and the upper surface of the PET film is attached to the pressure-sensitive adhesive integrated with the carbon fiber mat can be achieved through the manufacturing method of the thermal diffusion sheet.

상기와 같이 구성된 본 발명은 일면의 이형지를 떼어내고 점착제을 평판 디스플레이패널에 부착하면, 평판 디스플레이패널에서 발생되는 열이 알루미늄시트로에 의해 열전달이 신속하게 이루어지고, 상기 알루미늄시트로 전달된 열은 알루미늄시트 이면의 점착제와 일체로 직결 부착구성된 탄소섬유매트에 의해 열이 신속히 확산되기 때문에 냉각효율을 월등히 향상시킬 수 있는 효과가 있다.According to the present invention configured as described above, when the release paper on one side is removed and the adhesive is attached to the flat panel display panel, heat generated from the flat panel panel is quickly transferred by the aluminum sheet, and the heat transferred to the aluminum sheet is aluminum. Since the heat is rapidly diffused by the carbon fiber mat that is directly attached to the adhesive on the back surface of the sheet, there is an effect of significantly improving the cooling efficiency.

또한, 상기 알루미늄시트 양면에 형성되는 점착제는 열전도성필라를 함유함으로써, 평판 디스플레이패널에서 알루미늄시트, 알루미늄시트에서 탄소섬유매트로 열전달의 신속성을 극대화할 수 있기 때문에 냉각능력이 더욱 향상되는 효과가 발생된다.In addition, since the pressure-sensitive adhesive formed on both sides of the aluminum sheet contains a thermally conductive pillar, it is possible to maximize the rapidity of heat transfer from the aluminum sheet in the flat panel display panel to the carbon fiber mat in the aluminum sheet, thereby further improving the cooling capacity. do.

그리고, 본 발명은 단순한 접착에 의해 적층된 것이 아니라 열 압착에 의해 용융되면서 일체화되기 때문에, 구조적으로 견고한 결합력을 가짐은 물론 그라파이트와 같이 균열, 가루 등이 발생되지 않아 전기쇼트 및 시스템의 고장 발생율이 거의 없고, 구조의 간단성으로 인해 저렴한 비용으로 용이하게 제조할 수 있는 이점이 있다.In addition, since the present invention is not laminated by simple adhesion but integrated by melting by thermocompression, the present invention has a structurally strong bonding force and does not generate cracks, powder, etc., such as graphite, resulting in failure rate of electric shorts and systems. Almost no, there is an advantage that can be easily manufactured at low cost due to the simplicity of the structure.

또한, 열확산층이 부직포형태의 탄소섬유매트로 됨으로써, 그라파이트와 같이 판재형태가 아니므로 얇고 가볍고, 굴곡부에도 부착이 용이하여 평판 디스플레이패널의 형태에 구애받지 않고 긴밀한 접촉을 달성할 수 있어 호환성이 뛰어난 이점도 가진다.
In addition, since the thermal diffusion layer is made of a non-woven carbon fiber mat, it is not a plate like graphite, so it is thin and light, and is easily attached to the bent portion, so that a close contact can be achieved regardless of the shape of the flat panel display panel. There is also an advantage.

도 1은 종래의 예시도
도 2는 종래의 실시 예시도
도 3은 본 발명의 예시도
도 4는 본 발명의 제조 전 시트구조의 예시도
도 5는 본 발명의 제조방법 예시도
도 6은 본 발명의 실시 예시도 이다.
1 is a conventional illustration
Fig. 2 is a view
3 is an exemplary view of the present invention.
Figure 4 is an illustration of the sheet structure before manufacture of the present invention
5 is an exemplary view illustrating a manufacturing method of the present invention.
6 is an exemplary embodiment of the present invention.

이하 본 발명을 구현하기 위한 바람직한 예를 첨부된 도면에 의거하여 상세하게 설명하면 다음과 같다.
BEST MODE Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

먼저 본 발명에서 제시하는 첨부도면을 살펴보면, 도1은 종래의 예시도로 써, 도시된 바와 같이, 하부에서부터 이형지(1), 접착제(2), 양측 접착제 지지용 PET필름(3), 접착제(4), 열확산 판재용 그라파이트(5), 접착제(6), 보호용 PET필름(7)이 순차적으로 적층되어 있다. 앞서 살펴본 문제점을 생략한 채 도시된 구조만 살펴보더라도, 반복되는 접착제의 연속된 적층구조로 PET필름(3), 그라파이트(5), 보호필름(7)이 접착에 의해 일체화되는 구조로써 구조가 복잡하고, 상기 구조를 제작하기 위해서는 적층과 접착제의 도포작업이 개별적 단계로 이루어져야만 달성됨으로 제작의 어려움을 알 수 있다.
Looking at the accompanying drawings first presented in the present invention, Figure 1 is a conventional illustration, as shown, from the bottom release paper (1), adhesive (2), PET film (3) for supporting both sides adhesive, adhesive (4) ), Graphite 5 for thermal diffusion plate, adhesive 6, and PET film 7 for protection are laminated in this order. Although only the illustrated structure is omitted without the problems described above, the PET film 3, graphite 5, and protective film 7 are integrated by adhesion in a continuous laminated structure of repeated adhesives. In addition, in order to manufacture the structure can be seen that the difficulty of manufacturing, because the lamination and the application of the adhesive is achieved only by a separate step.

도2는 종래 열확산판의 실시 예로써, 이형지(1)를 떼어내고 평판 디스플레이패널(A)에 열확산판을 부착한 상태를 나타낸 것이다. 이를 살펴보면 도시된 바와 같이, 평판 디스플레이패널(A)과 그라파이트(5) 사이에 구성되는 PET필름(3)에 의해 열전달이 차단되는 구조를 띔으로써 열전달 및 열확산 효율이 현저히 저하될 수밖에 없는 구조를 띄고 있다.
2 is a view illustrating a state in which a release paper 1 is removed and a heat diffusion plate is attached to a flat panel display panel A according to an embodiment of a conventional heat diffusion plate. Looking at it, as shown, the heat transfer is blocked by the PET film 3 constituted between the flat panel (A) and the graphite (5) has a structure that can not only significantly reduce the heat transfer and heat diffusion efficiency have.

이에 본 발명은 제작 및 구조가 간단하면서도 평판 디스플레이패널에서 열확산층으로 열전달이 신속하게 이루어져 효율적인 열확산이 달성되도록 하기 위해 도3과 같은 구조의 열확산시트를 제공한다.Accordingly, the present invention provides a thermal diffusion sheet having a structure as shown in FIG. 3 in order to achieve efficient heat diffusion by quickly transferring heat from a flat panel display panel to a thermal diffusion layer in a simple manufacturing and structure.

도시된 도3을 살펴보면, 하부에서부터 이형지(10), 열전도성필라가 함유된 점착제(20), 열전달용 알루미늄시트(30), 열전도성필라가 함유된 점착제(40)과, 상기 점착제(40)과 일체로 구성되는 부직포형태의 열확산층용 탄소섬유매트(50), 그리고 그 상면에 PET필름(60)이 순차적으로 구성된다.
Referring to Figure 3, from the bottom release paper 10, a pressure-sensitive adhesive 20, a heat-conductive pillar containing an adhesive 20, an aluminum sheet for heat transfer 30, a pressure-sensitive adhesive 40 containing a thermally conductive pillar, and the pressure-sensitive adhesive 40 Carbon fiber mat 50 for the thermal diffusion layer is formed integrally with the non-woven fabric, and the PET film 60 is sequentially formed on the upper surface.

도시된 바와 같이, 본 발명은 먼저 열확산층이 부직포형태의 열확산용 탄소섬유매트(50)로 구성되고, 상기 탄소섬유매트(50)와 점착제(40)이 일체로 되어 하나의 층으로 구성되며, 그 상면에 PET필름(60)이 점착제(40)에 의해 부착구성되어 있고, 하면에는 열전도를 향상시키기 위한 알루미늄시트(30)가 점착제(40)에 부착구성되어 있으며, 상기 알루미늄시트(30)의 하면에 평판 디스플레이패널(A)부착용 점착제(20)이 구성되어 있고, 그 하면에는 열확산시트를 사용시 떼어내기 위한 이형지(10)가 구성되는데, 이 구조만 살펴보더라도 종래에 비해 간단함을 알 수 있다.
As shown, the present invention is a thermal diffusion layer is first composed of a thermal diffusion carbon fiber mat 50 of the non-woven fabric, the carbon fiber mat 50 and the pressure-sensitive adhesive 40 is composed of a single layer, The PET film 60 is attached to the upper surface by the adhesive 40, and on the lower surface, the aluminum sheet 30 is attached to the adhesive 40 to improve the thermal conductivity. The adhesive 20 for attaching the flat panel display panel (A) is formed on the lower surface, and the release paper 10 for removing the thermal diffusion sheet is formed on the lower surface of the flat panel display panel (A). .

그리고, 열확산층으로 구성되는 탄소섬유매트(50)는 그라파이트에 비해 비용이 저렴하고, 균열, 파손, 가루 등이 발생되지 않아 쇼트방지 및 시스템을 보호하는데 더 유리한 조건을 가지고 있으며, 가볍고, 점착제(40)과의 결착력이 좋고, 표면의 굴곡에 관계없이 긴밀한 접촉을 달성할 수 있는 효과가 있다.In addition, the carbon fiber mat 50 composed of a thermal diffusion layer has a lower cost than graphite, has no favorable conditions for preventing shorts and protecting the system because cracks, breakages, powders, etc. do not occur, and are light and adhesive ( The binding force with 40) is good, and there is an effect of achieving intimate contact regardless of the curvature of the surface.

상기 탄소섬유매트(50)는 100㎛로 찹트(chopped) 시킨 탄소섬유를 재배열하여 만든 것으로, 부직포형태처럼 적정의 틈새를 가짐으로써 상기 틈새에 점착제(40)가 스며들어 일체로 될 수 있다.The carbon fiber mat 50 is made by rearranging carbon fibers chopped to 100 μm, and may have an adhesive 40 soaked into the gap by having a proper gap like a nonwoven fabric.

상기 알루미늄시트(30)는 점착제(40)과, 일체로된 탄소섬유매트(50)의 일면에 부착구성되어 평판 디스플레이패널(A)의 열을 신속히 열확산층 즉 탄소섬유매트(50)로 전달하여 신속한 열확산을 달성할 수 있게 된다.The aluminum sheet 30 is attached to one surface of the pressure-sensitive adhesive 40 and the integrated carbon fiber mat 50 to quickly transfer the heat of the flat panel display panel A to the thermal diffusion layer, that is, the carbon fiber mat 50. Rapid thermal diffusion can be achieved.

이는 탄소섬유매트(50)와 그라파이트가 동일한 열확산력을 가진다는 가정하에 열전달의 신속성에 따라 열분산능력이 좌우됨으로 본 발명에 따른 알루미늄시트(30)의 구성에 의해 열확산력이 향상되는 효과를 가진다.This has the effect of improving the thermal diffusivity by the configuration of the aluminum sheet 30 according to the present invention because the heat dissipation capacity depends on the rapid heat transfer under the assumption that the carbon fiber mat 50 and graphite have the same thermal diffusivity. .

상기 PET필름(60)은 점착제(40)과, 일체로된 탄소섬유매트(50)의 일면에 점착제(40)에 의해 부착구성되어 탄소섬유매트(50)의 오염 및 보호를 위한 것으로, 사용자의 편의에 의해 구성을 배제하거나 재질 등을 달리할 수도 있다.The PET film 60 is attached to one side of the pressure-sensitive adhesive 40 and the integrated carbon fiber mat 50 by means of the pressure-sensitive adhesive 40 to contaminate and protect the carbon fiber mat 50, the user's For convenience, the configuration may be excluded or materials may be different.

상기 점착제(20)은 종래와 같은 접착제형태가 아닌 점착제로 구성되는 데, 이는 그라파이트와 같이 무겁거나 결착력이 떨어지지 않기 때문에 사용자의 편의에 따라 탈부착이 용이하도록 하기 위함이며, 탄소섬유매트(50)와 일체로 되는 점착제(40)는 접착제로 구성하여 결합력을 향상시킬 수도 있다.The pressure-sensitive adhesive 20 is composed of a pressure-sensitive adhesive that is not in the form of an adhesive as in the prior art, which is intended to facilitate the detachability according to the user's convenience because it is not heavy or binding strength, such as graphite, carbon fiber mat 50 The pressure-sensitive adhesive 40 to be integrated may be composed of an adhesive to improve the bonding force.

그리고, 상기 점착제(20)(40)은 열전도성필라가 포함되는데, 이는 알루미늄시트(30) 및 탄소섬유매트(50) 측으로 열전달을 더욱 신속하게 하기 위함이다.
In addition, the adhesives 20 and 40 include a thermally conductive pillar, which is intended to more quickly transfer heat to the aluminum sheet 30 and the carbon fiber mat 50.

도3에 도시된 바와 같은 열확산시트를 달성하기 위해서는 먼저 도4의 상측에 도시된 바와 같은 적층구조를 가져야 하는데, 이에 도4의 상측 도면을 살펴보면, 하부에서부터 이형지(10), 열전도성필라가 함유된 점착제(20), 열전도용 알루미늄시트(30), 열전도성필라가 함유된 점착제(40), 부직포형태의 열확산용 탄소섬유매트(50), 보호용 PET필름(60)을 순차적으로 적층한다.
In order to achieve the thermal diffusion sheet as shown in FIG. 3, first, it is necessary to have a lamination structure as shown in the upper side of FIG. 4. Referring to the upper view of FIG. 4, the release paper 10 and the thermal conductive pillar are contained from the bottom. The pressure-sensitive adhesive 20, the thermal conductive aluminum sheet 30, the pressure-sensitive adhesive 40 containing the thermally conductive pillar, the thermal diffusion carbon fiber mat 50 of the nonwoven fabric form, the protective PET film 60 is sequentially laminated.

상기에서 더 바람직하게는 열전도용 알루미늄시트(30)는 50~150㎛, 열전도성필라가 함유된 알루미늄시트 양면의 점착제(20)(40)은 10~30㎛, 탄소섬유매트(50)는 100~300㎛, PET필름(60)은 3~50㎛의 두께로 함이 가장 이상적이다.
More preferably, the heat conductive aluminum sheet 30 is 50 to 150 μm, and the adhesives 20 and 40 on both sides of the aluminum sheet containing heat conductive pillars are 10 to 30 μm, and the carbon fiber mat 50 is 100. ~ 300㎛, PET film 60 is most ideal to the thickness of 3 ~ 50㎛.

상기의 시트 적층구조에서 PET필름(60)의 상면에 상기 PET필름(60)이 녹지않을 정도로 열로 압착하면, 그 가압력에 의해 점착제(40)이 녹으면서 탄소섬유매트(50)에 스며들어 탄소섬유매트(50)와 점착제(40)이 일체화되고, 동시에 상면의 PET필름(60)이 탄소섬유매트(50)와 일체로 된 점착제(40)에 의해 부착된다. 이렇게 하면 도3과 같은 구조의 열확산시트을 얻을 수 있게 된다.
When the PET film 60 is pressed to the upper surface of the PET film 60 in the sheet laminated structure with heat so as not to melt, the pressure-sensitive adhesive 40 is melted by the pressing force, soaking in the carbon fiber mat 50 and carbon fiber. The mat 50 and the pressure-sensitive adhesive 40 are integrated, and at the same time, the PET film 60 on the upper surface is attached by the pressure-sensitive adhesive 40 integrated with the carbon fiber mat 50. In this way, a thermal diffusion sheet having a structure as shown in FIG. 3 can be obtained.

도5는 상기 도4를 이용해 도3의 열확산시트를 제조하는 바람직한 예로써, 이를 살펴보면, 도4와 같은 시트 적층구조를 컨베어장치(C) 등으로 일측으로 연속이송하면서, 그 상측의 히팅장치에 의해 발열되는 열압착용 롤러(L)를 하부로 가압하도록 하면, 본 발명의 열확산시트를 연속으로 생산할 수 있게 된다.
FIG. 5 is a preferred example of manufacturing the thermal diffusion sheet of FIG. 3 using FIG. 4. Looking at this, the sheet stacking structure of FIG. 4 is continuously transferred to one side by a conveyor device C and the like, and is applied to the heating device on the upper side. By pressing the heat-pressing roller L generated by the lower portion, it is possible to continuously produce the thermal diffusion sheet of the present invention.

도6은 본 발명의 열확산시트에 이형지(10)를 떼어내고 평판 디스플레이패널(A)에 부착된 상태를 나타낸 것으로, 이를 살펴보면, 상술한 바와 같이 평판 디스플레이패널(A)에서 발생되는 열이 알루미늄시트(30)에 의해 열전달이 신속하게 이루어지고, 상기 알루미늄시트(30)로 전달된 열은 탄소섬유매트(50)에 의해 열이 신속히 확산되면서 냉각이 효율적으로 이루어진다.6 is a view illustrating a state in which the release paper 10 is detached from the thermal diffusion sheet of the present invention and attached to the flat panel display panel A. Referring to this, as described above, the heat generated from the flat panel panel A is the aluminum sheet. The heat transfer is made quickly by the 30, and the heat transferred to the aluminum sheet 30 is efficiently spread while the heat is rapidly diffused by the carbon fiber mat 50.

이와 같은 열확산력은 텔레비젼, 모니터, 노트북, 휴대폰, 등과 같이 디스플레이 패널로 컨텐츠가 출력되는 전자기기의 디스플레이 패널에서 발생되는 열을 효율적으로 확산시킬 수가 있어 잔상문제, 전기쇼트, 오작동, 제품의 수명단축 등을 방지할 수 있는 효과가 발생한다.This thermal diffusivity can effectively diffuse heat generated from the display panel of electronic devices whose contents are output to the display panel such as TVs, monitors, notebooks, mobile phones, etc., resulting in afterimage problems, electric shorts, malfunctions, and shortened product life The effect which can prevent etc. is produced.

또한, 상기에서 점착제(20)(40)는 열전도성필라가 함유되어 있으므로, 단순히 평판 디스플레이패널(A)에 열확산시트를 부착하는 용도를 넘어서 평판 디스플레이패널(A)에서 알루미늄시트(30), 알루미늄시트(30)에서 탄소섬유매트(50)로 열전달능력을 가지기 때문에 열전달의 신속성과 열확산의 효율성을 극대화할 수 있게 된다.In addition, since the adhesives 20 and 40 contain thermally conductive pillars, the adhesive sheets 20 and 40 are not simply used for attaching a thermal diffusion sheet to the flat panel display panel A. Since the sheet 30 has a heat transfer capacity from the carbon fiber mat 50, it is possible to maximize the speed of heat transfer and the efficiency of heat diffusion.

그리고, 상기 점착제(20)(40)에 포함된 열전도성필라는 열압착시 두께가 얇아지면서 밀집도가 향상되기 때문에 열전도능력이 더욱 향상되는 작용도 있다.
In addition, the thermally conductive pillars included in the pressure sensitive adhesives 20 and 40 also have a function of improving the thermal conductivity because the compactness is improved while the thickness becomes thin during thermal compression.

나아가, 본 발명은 상기와 같이 본 발명을 실현하기 위한 구체적인 예 및 실시 예를 서술하였으나, 통상적 기술에 대한 구체적 수단이나 설명은 생략 또는 간단한 명칭 등으로 대체하였고, 본 발명에서 제시한 도면은 예시 도로써 특징을 부각시키고자 도법에는 맞지 않을 수 있고 요지를 흐릴 수 있는 부분은 편의상 일부 삭제하였다. 이에 따라 본 발명과 관련된 해당기술분야의 당업자라면 상기에서 설명한 내용을 뒷받침하여 충분히 실시가능할 것으로 보이고, 본 발명의 영역으로부터 벗어나지 않는 범위 내에서 다양하게 수정 및 변경시켜 용이하게 사용가능할 것이다.
In addition, the present invention has been described specific examples and embodiments for realizing the present invention as described above, the specific means or description of the conventional technology is omitted or replaced with a simple name, and the drawings presented in the present invention is an exemplary road To highlight the features, some parts that may not fit the projection and blur the gist are removed for convenience. Accordingly, it will be apparent to those skilled in the art that the present invention pertains to the above-described contents that the present invention may be sufficiently implemented, and that various modifications and changes may be made without departing from the scope of the present invention.

1: 이형지 2: 접착제
3: PET필름 4: 접착제
5: 그라파이트 6: 접착제
7: PET필름
10: 이형지 20: 점착제
30: 알루미늄시트 40: 점착제
50: 탄소섬유매트 60: PET필름
A: 평판 디스플레이패널 C: 컨베어장치
L: 열압착 롤러1: release paper 2: adhesive
3: PET film 4: adhesive
5: graphite 6: adhesive
7: PET film
10: release paper 20: adhesive
30: aluminum sheet 40: adhesive
50: carbon fiber mat 60: PET film
A: Flat panel display panel C: Conveyor unit
L: thermocompression roller

Claims (2)

이형지(10), 열전도성필라가 함유된 점착제(20), 열전도성 알루미늄시트(30), 열전도성필라가 함유된 점착제(40), 틈새를 가진 부직포형태의 열확산용 탄소섬유매트(50), 보호용 PET필름(60)을 순차적으로 적층하는 시트적층단계;
상기에서 적층된 시트의 PET필름(60) 상면에 PET필름(60)이 녹지않을 정도의 열로 압착하는 열압착단계;
상기 열압착단계에 의해 전체적으로 시트두께가 얇아짐은 물론, 알루미늄시트(30) 상측의 점착제(40)가 녹으면서 탄소섬유매트(50)의 틈새에 점착제(40)가 일체로 스며들고, 그 상면에 PET필름(60)이 탄소섬유매트(50)와 일체로 된 점착제(40)에 부착됨으로써 완성됨을 특징으로 하는 열확산시트의 제조방법.Release paper 10, adhesive 20 containing thermally conductive pillars, thermally conductive aluminum sheet 30, adhesive 40 containing thermally conductive pillars, carbon fiber mat 50 for thermal diffusion of a nonwoven fabric having a gap, A sheet stacking step of sequentially stacking the protective PET film 60;
A thermocompression step of compressing the PET film 60 with heat such that the PET film 60 does not melt on the upper surface of the PET film 60 of the stacked sheets;
The thickness of the sheet as a whole is reduced by the thermocompression step, as well as the adhesive 40 on the upper side of the aluminum sheet 30 is melted, and the adhesive 40 penetrates integrally into the gap between the carbon fiber mat 50 and the upper surface thereof. PET film 60 is a method of manufacturing a thermal diffusion sheet, characterized in that completed by attaching to the pressure-sensitive adhesive 40 integral with the carbon fiber mat (50). 삭제delete
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KR20070121773A (en) * 2005-04-19 2007-12-27 데이진 가부시키가이샤 Carbon fiber composite sheet, use of the same as heat transferring article, and sheet for pitch-based carbon fiber mat for use therein
KR100895792B1 (en) 2008-11-18 2009-05-07 실리콘밸리(주) The Protection sheet for PCB and FPCB adhesion ACF
KR100921799B1 (en) * 2009-07-17 2009-10-15 실리콘밸리(주) Thermal diffusion sheet and manufacturing method of the same

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Publication number Priority date Publication date Assignee Title
KR20070121773A (en) * 2005-04-19 2007-12-27 데이진 가부시키가이샤 Carbon fiber composite sheet, use of the same as heat transferring article, and sheet for pitch-based carbon fiber mat for use therein
KR100895792B1 (en) 2008-11-18 2009-05-07 실리콘밸리(주) The Protection sheet for PCB and FPCB adhesion ACF
KR100921799B1 (en) * 2009-07-17 2009-10-15 실리콘밸리(주) Thermal diffusion sheet and manufacturing method of the same

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