JP2015532778A - ハイブリッド断熱シートおよびこれを備えた電子機器 - Google Patents
ハイブリッド断熱シートおよびこれを備えた電子機器 Download PDFInfo
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- B32B7/027—Thermal properties
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- H—ELECTRICITY
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Abstract
Description
Claims (27)
- 電子機器の発熱部品から発生した熱を拡散させて放熱する放熱層と、
前記放熱層で飽和した熱の外部伝達を抑制する断熱層とを含むことを特徴とするハイブリッド断熱シート。 - 前記放熱層は前記発熱部品から発生した熱を水平方向に拡散させる層であり、前記断熱層は前記放熱層で飽和した熱が垂直方向に伝達されることを抑制する層であることを特徴とする請求項1に記載のハイブリッド断熱シート。
- 前記放熱層は少なくとも200W/mkの熱伝導率を有する板状部材を含むことを特徴とする請求項1に記載のハイブリッド断熱シート。
- 前記断熱層は20W/mk以下の熱伝導度を有する板状部材を含むことを特徴とする請求項1に記載のハイブリッド断熱シート。
- 前記断熱層は空気をトラッピングすることができるエアポケットを形成する多数の微細気孔を備えた多孔性基材であることを特徴とする請求項1に記載のハイブリッド断熱シート。
- 前記多数の微細気孔サイズは5μm未満であることを特徴とする請求項5に記載の断熱シート。
- 前記多孔性基材はナノ繊維が蓄積して形成された多数の気孔を有するナノ繊維ウェブ、不織布およびこれらの積層構造のうちいずれか一つであることを特徴とする請求項5に記載のハイブリッド断熱シート。
- 前記ナノ繊維ウェブは低重合体ポリウレタン(polyurethane)、高重合体ポリウレタン、PS(polystylene)、PVA(polyvinylalchol)、PMMA(polymethyl methacrylate)、ポリラクト酸(PLA:polylacticacid)、PEO(polyethyleneoxide)、PVAc(polyvinylacetate)、PAA(polyacrylicacid)、ポリカプロラクトン(PCL:polycaprolactone)、PAN(polyacrylonitrile)、PMMA(polymethyl methacrylate)、PVP(polyvinylpyrrolidone)、PVC(polyvinylchloride)、ナイロン(Nylon)、PC(polycarbonate)、PEI(polyetherimide)、PVdF(polyvinylidene fluoride)、PEI(polyetherimide)、およびPES(polyesthersulphone)のいずれか一つまたはこれらの混合物からなることを特徴とする請求項7に記載のハイブリッド断熱シート。
- 前記放熱層はCu、Al、Ni、Agおよびグラファイトのうちいずれか一つからなる薄板部材を含むことを特徴とする請求項1に記載のハイブリッド断熱シート。
- 前記放熱層と前記断熱層を接着させる接着層をさらに含むことを特徴とする請求項1に記載のハイブリッド断熱シート。
- 前記接着層はアクリル系、エポキシ系、アラミド(aramid)系、ウレタン(urethane)系、ポリアミド(polyamide)系、ポリエチレン(polyethylen)系、E.V.A系、ポリエステル(polyester)系、およびP.V.C系のうちいずれか一つの接着剤を含むことを特徴とする請求項10に記載のハイブリッド断熱シート。
- 前記接着層は熱接着可能な繊維が蓄積して形成された多数の気孔を有するホットメルトウェブまたはホットメルトパウダーを含むことを特徴とする請求項10に記載のハイブリッド断熱シート。
- 前記接着層は縦横比1:100の熱拡散用伝導性フィラーおよび球形状の熱伝達用伝導性フィラーを含むことを特徴とする請求項11に記載のハイブリッド断熱シート。
- 前記放熱層は第1熱伝導率を有する第1放熱層と、前記第1放熱層に接合され、第2熱伝導率を有する第2放熱層とを含むことを特徴とする請求項1に記載のハイブリッド断熱シート。
- 前記第1放熱層の第1熱伝導率と前記第2放熱層の第2熱伝導率は同じであることを特徴とする請求項14に記載のハイブリッド断熱シート。
- 前記第1放熱層の第1熱伝導率は前記第2放熱層の第2熱伝導率より低く、前記第1放熱層は前記発熱部品に付着、接触および近接のいずれか一つの状態で結合していることを特徴とする請求項14に記載のハイブリッド断熱シート。
- 前記第1放熱層はAl、Mg、Auのいずれか一つの金属からなり、前記第2放熱層はCuからなるもの、
前記第1放熱層はCuからなり、前記第2放熱層はAgからなるもの、および
前記第1放熱層はAl、Mg、Au、Ag、Cuのいずれか一つからなり、前記第2放熱層はグラファイトからなるもののうちいずれか一つで具現することを特徴とする請求項16に記載のハイブリッド断熱シート。 - 前記第1放熱層と前記第2放熱層は拡散接合されたりまたは接着剤で接合されたことを特徴とする請求項14に記載のハイブリッド断熱シート。
- 前記放熱層に形成された熱放射薄膜をさらに含むことを特徴とする請求項1に記載のハイブリッド断熱シート。
- 前記熱放射薄膜はグラフェン粉末が含まれているコーティング膜、グラフェン薄膜、放熱用粒子が分散したナノゾルがコーティングされてゲル化および熱処理して形成された膜のうちいずれか一つであることを特徴とする請求項19に記載のハイブリッド断熱シート。
- 前記放熱層に積層された粘着層をさらに含むことを特徴とする請求項1に記載のハイブリッド断熱シート。
- 前記粘着層は熱伝導性金属、カーボンブラック(Carbon Black)、カーボンナノチューブ、グラフェン(Graphene)、熱伝導性ポリマー(PDOT)のうち少なくとも一つを含むことを特徴とする請求項21に記載のハイブリッド断熱シート。
- 前記断熱層に積層された保護フィルムをさらに含むことを特徴とする請求項21に記載のハイブリッド断熱シート。
- 前記放熱層の表面に形成された酸化防止膜をさらに含むことを特徴とする請求項1に記載のハイブリッド断熱シート。
- 前記酸化防止膜はNiコーティング膜を含むことを特徴とする請求項24に記載のハイブリッド断熱シート。
- 電子機器の発熱部品から発生した熱を水平方向に拡散させて1次放熱する第1放熱層、
前記第1放熱層で飽和した熱が垂直方向に伝達されることを抑制する断熱層、および
前記断熱層から伝達された熱を水平方向に拡散させて2次放熱する第2放熱層を含むことを特徴とするハイブリッド断熱シート。 - ブラケット、前記ブラケットに装着されるディスプレイパネル、AP(ApplicationProcessor)ICおよびPM(PowerManagement)ICが実装されたFPCB、着脱可能なバックカバー、前記FPCBと前記バックカバーとの間に位置し前記ブラケットと前記FPCBをカバーリングするインナーカバー、および前記インナーカバーに設けられた有心(USIM)チップおよびマイクロメモリ装着ケースを含む電子機器において、
前記ブラケットに対向するクッション層領域、前記FPCBと前記インナーカバーの間の領域、前記有心チップおよびマイクロメモリ装着ケース領域、および前記バックカバー領域のうち少なくとも一つに設けられて発熱部品から発生する熱を拡散させて放熱すると共にその熱の外部伝達を抑制して電子機器の外部温度を一定の温度以下に維持させるための請求項1乃至26のいずれか一項に記載のハイブリッド断熱シートを含む電子機器。
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Also Published As
Publication number | Publication date |
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WO2014204245A2 (ko) | 2014-12-24 |
CN104737634A (zh) | 2015-06-24 |
US9374932B2 (en) | 2016-06-21 |
US20140376191A1 (en) | 2014-12-25 |
EP2874479A2 (en) | 2015-05-20 |
EP2874479B1 (en) | 2018-08-08 |
CN104737634B (zh) | 2017-08-18 |
EP2874479A4 (en) | 2015-12-16 |
WO2014204245A3 (ko) | 2015-04-23 |
JP6023885B2 (ja) | 2016-11-09 |
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