JP5239768B2 - 放熱材料並びに電子機器及びその製造方法 - Google Patents
放熱材料並びに電子機器及びその製造方法 Download PDFInfo
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- JP5239768B2 JP5239768B2 JP2008292320A JP2008292320A JP5239768B2 JP 5239768 B2 JP5239768 B2 JP 5239768B2 JP 2008292320 A JP2008292320 A JP 2008292320A JP 2008292320 A JP2008292320 A JP 2008292320A JP 5239768 B2 JP5239768 B2 JP 5239768B2
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- carbon nanotube
- nanotube sheet
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- H01L23/433—Auxiliary members in containers characterised by their shape, e.g. pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
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Description
第1実施形態によるカーボンナノチューブシート及びその製造方法について図1乃至図3を用いて説明する。
第2実施形態によるカーボンナノチューブシート及びその製造方法について図4乃至図8を用いて説明する。なお、図1乃至図3に示す第1実施形態によるカーボンナノチューブシート及びその製造方法と同一の構成要素には、同一の符号を付して説明を省略または簡潔にする。
第3実施形態によるカーボンナノチューブシート及びその製造方法について図9乃至図14を用いて説明する。なお、図1乃至図8に示す第1及び第2実施形態によるカーボンナノチューブシート及びその製造方法と同一の構成要素には、同一の符号を付して説明を省略または簡潔にする。
第4実施形態によるカーボンナノチューブシート及びその製造方法について図15乃至図19を用いて説明する。なお、図1乃至図14に示す第1乃至第3実施形態によるカーボンナノチューブシート及びその製造方法と同一の構成要素には、同一の符号を付して説明を省略または簡潔にする。
第5実施形態による電子機器及びその製造方法について図20乃至図22を用いて説明する。なお、図1乃至図19に示す第1乃至第4実施形態によるカーボンナノチューブシート及びその製造方法と同一の構成要素には、同一の符号を付して説明を省略または簡潔にする。
第6実施形態による電子機器及びその製造方法について図23及び図24を用いて説明する。なお、図1乃至図19に示す第1乃至第4実施形態によるカーボンナノチューブシート及びその製造方法、並びに図20乃至図22に示す第5実施形態による電子機器及びその製造方法と同一の構成要素には、同一の符号を付して説明を省略または簡潔にする。
第7実施形態による電子機器について図25を用いて説明する。
上記実施形態に限らず種々の変形が可能である。
複数の前記線状構造体間に配置された熱可塑性樹脂の充填層と
を有することを特徴とする放熱材料。
複数の前記線状構造体の少なくとも一方の端部に形成され、前記熱可塑性樹脂よりも熱伝導率の高い材料の被膜を更に有する
ことを特徴とする放熱材料。
前記熱可塑性樹脂は、温度に応じて液体と固体との間で状態変化する
ことを特徴とする放熱材料。
前記熱可塑性樹脂は、液体から固体に状態変化する際に接着性を発現する
ことを特徴とする放熱材料。
前記充填層は、前記熱可塑性樹脂の第1の層と、前記第1の層上に配置され前記熱可塑性樹脂とは異なる材料の第2の層と、前記第2の層上に配置され前記熱可塑性樹脂の第3の層とを有する
ことを特徴とする放熱材料。
複数の前記線状構造体は、前記充填層の膜厚方向に配向している
ことを特徴とする放熱材料。
複数の前記線状構造体の少なくとも一方の端部は、前記充填層から露出している
ことを特徴とする放熱材料。
放熱体と、
前記発熱体と放熱体との間に配置され、複数の炭素元素の線状構造体と、複数の前記線状構造体間に配置された熱可塑性樹脂の充填層とを含む放熱材料と
を有することを特徴とする電子機器。
前記放熱材料は、複数の前記線状構造体の少なくとも一方の端部に形成され、前記熱可塑性樹脂よりも熱伝導率の高い材料の被膜を更に有する
ことを特徴とする電子機器。
前記熱可塑性樹脂の融解温度は、前記発熱体の発熱温度よりも高く、前記発熱体及び放熱体の耐熱温度よりも低い
ことを特徴とする電子機器。
複数の前記線状構造体は、前記充填層の膜厚方向に配向している
ことを特徴とする電子機器。
前記発熱体及び前記放熱体は、前記熱可塑性樹脂によって前記放熱材料に接着されている
ことを特徴とする電子機器。
前記放熱材料を加熱して前記熱可塑性樹脂を融解する工程と、
前記放熱材料を冷却して前記熱可塑性樹脂を固化する工程と
を有することを特徴とする電子機器の製造方法。
前記熱可塑性樹脂を融解する工程では、前記発熱体の発熱温度よりも高く、前記発熱体及び放熱体の耐熱温度よりも低い温度で加熱することにより、前記熱可塑性樹脂を融解する
ことを特徴とする電子機器の製造方法。
前記熱可塑性樹脂は、液体から固体に状態変化する際に接着性を発現する材料であり、
前記放熱材料を冷却する際に、前記放熱材料と前記発熱体及び/又は放熱体とを接着する
ことを特徴とする電子機器の製造方法。
前記発熱体と前記放熱体との間に前記放熱材料を配置する工程は、前記放熱体上に、複数の前記線状構造体を成長する工程と、複数の前記線状構造体間に前記熱可塑性樹脂を浸透させ、前記充填層を形成する工程とを有する
ことを特徴とする電子機器の製造方法。
前記発熱体と前記放熱体との間に前記放熱材料を配置する工程では、前記発熱体と前記放熱体との間に複数の前記放熱材料を配置し、
前記熱可塑性樹脂を融解する工程では、複数の前記放熱材料の複数の前記線状構造体を互いの間に挿入する
ことを特徴とする電子機器の製造方法。
複数の前記放熱材料のうちの少なくとも一つを、前記発熱体又は前記放熱体に予め接着しておく
ことを特徴とする電子機器の製造方法。
前記熱可塑性樹脂を融解する工程では、前記発熱体の発熱温度よりも高く、前記発熱体及び放熱体の耐熱温度よりも低い温度で前記熱可塑性樹脂を融解する
ことを特徴とする電子機器の製造方法。
前記放熱体上に形成され、複数の炭素元素の線状構造体と、複数の前記線状構造体の間隙に配置された熱可塑性樹脂の充填層とを有する放熱材料と
を有することを特徴とする放熱部品。
12…カーボンナノチューブ
14…充填層
16…被膜
30…基板
32…触媒金属膜
34…熱可塑性樹脂フィルム
50…回路基板
52…突起状電極
54…半導体素子
56…カーボンナノチューブシート
58…ヒートスプレッダ
60…有機シーラント
70…高出力増幅器
72…パッケージ
74…ヒートシンク
76…カーボンナノチューブシート
Claims (4)
- 複数の炭素元素の線状構造体と、
複数の前記線状構造体間に配置され、温度に応じて液体と固体との間で状態変化し、液体から固体に状態変化する際に接着性を発現する熱可塑性樹脂の第1の層と、前記第1の層上に配置され前記熱可塑性樹脂とは異なる材料の第2の層と、前記第2の層上に配置され前記熱可塑性樹脂の第3の層とを有する充填層と、
複数の前記線状構造体の少なくとも一方の端部に形成され、前記熱可塑性樹脂よりも熱伝導率の高い材料よりなり、前記充填層の厚さ方向の膜厚が25nm〜1000nmである被膜と
を有することを特徴とする放熱材料。 - 発熱体と、
放熱体と、
前記発熱体と放熱体との間に配置され、複数の炭素元素の線状構造体と、複数の前記線状構造体間に配置され、温度に応じて液体と固体との間で状態変化し、液体から固体に状態変化する際に接着性を発現する熱可塑性樹脂の第1の層と、前記第1の層上に配置され前記熱可塑性樹脂とは異なる材料の第2の層と、前記第2の層上に配置され前記熱可塑性樹脂の第3の層とを有する充填層と、複数の前記線状構造体の少なくとも一方の端部に形成され、前記熱可塑性樹脂よりも熱伝導率の高い材料よりなり、前記充填層の厚さ方向の膜厚が25nm〜1000nmである被膜とを含む放熱材料と
を有することを特徴とする電子機器。 - 請求項2記載の電子機器において、
前記熱可塑性樹脂の融解温度は、前記発熱体の発熱温度よりも高く、前記発熱体及び放熱体の耐熱温度よりも低い
ことを特徴とする電子機器。 - 放熱体と、
前記放熱体上に形成され、複数の炭素元素の線状構造体と、複数の前記線状構造体間に配置され、温度に応じて液体と固体との間で状態変化し、液体から固体に状態変化する際に接着性を発現する熱可塑性樹脂の第1の層と、前記第1の層上に配置され前記熱可塑性樹脂とは異なる材料の第2の層と、前記第2の層上に配置され前記熱可塑性樹脂の第3の層とを有する充填層と、複数の前記線状構造体の少なくとも一方の端部に形成され、前記熱可塑性樹脂よりも熱伝導率の高い材料よりなり、前記充填層の厚さ方向の膜厚が25nm〜1000nmである被膜とを含む放熱材料と
を有することを特徴とする放熱部品。
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