JP2019138327A - 接合体、接合体の製造方法及びプロジェクター - Google Patents
接合体、接合体の製造方法及びプロジェクター Download PDFInfo
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- JP2019138327A JP2019138327A JP2018019860A JP2018019860A JP2019138327A JP 2019138327 A JP2019138327 A JP 2019138327A JP 2018019860 A JP2018019860 A JP 2018019860A JP 2018019860 A JP2018019860 A JP 2018019860A JP 2019138327 A JP2019138327 A JP 2019138327A
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- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
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- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
- B22F7/064—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts using an intermediate powder layer
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Abstract
Description
本適用例にかかる接合体であって、第1基板と、前記第1基板と対向する第2基板と、前記第1基板と前記第2基板とを接合する接合膜と、を備え、前記接合膜は、複数種の金属ナノ粒子を含み、前記接合膜は第1領域及び第2領域を有し、前記第1基板の平面視において前記第1領域は前記第2領域より前記金属ナノ粒子の密度が高いことを特徴とする。
上記適用例にかかる接合体において、前記第1領域は前記第2基板の中央に配置され、前記第2領域は前記第1領域の周りに配置されていることを特徴とする。
上記適用例にかかる接合体において、前記第1基板の平面視において前記接合膜は前記第2基板の周りの少なくとも一部から突出しており、前記第2基板において前記第1基板側の逆側の面である上面には前記接合膜が設置されていないことを特徴とする。
上記適用例にかかる接合体において、前記第1基板には前記第1領域の外周に沿って第1溝が設置され、前記第2領域の外周に沿って第2溝が設置されていることを特徴とする。
本適用例にかかる接合体の製造方法であって、第1基板または第2基板の片面に複数種の金属ナノ粒子を含むペーストを設置し、前記ペーストを前記第1基板及び前記第2基板で挟み、前記ペーストを焼成する工程を有し、前記ペーストは第1ペーストと前記第1ペーストより金属ナノ粒子の密度の低い第2ペーストとを有し、前記ペーストを設置するときに前記第1基板または前記第2基板の平面視において前記第1ペーストの周りに前記第2ペーストを設置することを特徴とする。
本適用例にかかるプロジェクターであって、光源と、前記光源が射出する光の波長を変換する波長変換部と、を備え、前記波長変換部は、熱を放熱する第1基板と蛍光体を有する第2基板とが接合膜で接合された接合体であり、前記波長変換部には上記のいずれか一項に記載の接合体が用いられていることを特徴とする。
本実施形態では、蛍光体素子と、この蛍光体素子を製造する製造方法との特徴的な例について、図に従って説明する。第1の実施形態にかかわる蛍光体素子について図1〜図4に従って説明する。図1は、蛍光体素子の構成を示す概略斜視図である。図1に示すように、接合体としての蛍光体素子1は四角形の第1基板2を備えている。第1基板2は平面形状が四角形の板である。第1基板2における四角形の隣り合う2辺が延びる方向をX方向及びY方向とする。第1基板2の厚み方向をZ方向とする。X方向、Y方向、Z方向はそれぞれ直交する。第1基板2の中央には第1基板2と対向して第2基板3が設置されている。第2基板3も平面形状が四角形の板である。第1基板2と第2基板3とは接合膜4により接合されている。
(1)本実施形態によれば、蛍光体素子1は第1基板2及び第2基板3を備えている。第1基板2及び第2基板3は接合膜4により接合されている。接合膜4は第1領域4a及び第2領域4bを有している。第1領域4aと第2領域4bとでは金属ナノ粒子の粒径の分布が異なっている。第1領域4aの金属ナノ粒子の粒径は第2領域4bの金属ナノ粒子の粒径より小さくなっている。そして、第1領域4aは第2領域4bより金属ナノ粒子の密度が高くなっている。熱の伝導は金属ナノ粒子を熱が伝わって行われるので、金属ナノ粒子の密度が高い領域は低い領域より伝熱性が良い。第1領域4aは金属ナノ粒子の密度が高いので伝熱性が良い領域になっている。
次に、蛍光体素子の一実施形態について図13の蛍光体素子の要部模式平面図を用いて説明する。本実施形態が第1の実施形態と異なるところは、第2基板3の周りの一部から接合膜4が突出している点にある。尚、第1の実施形態と同じ点については説明を省略する。
次に、蛍光体素子の一実施形態について図14〜図16の蛍光体素子の模式側断面図を用いて説明する。本実施形態が第1の実施形態と異なるところは、第1基板2に溝が設置されている点にある。尚、第1の実施形態と同じ点については説明を省略する。
次に、蛍光体素子が用いられたプロジェクターについて図17及び図18を用いて説明する。図17はプロジェクターの構成を示す模式図であり、図18は光源装置の構成を示す模式図である。図17に示すように、プロジェクター20は、内部に設けられた光源装置24から射出された光束を変調して画像情報に応じた画像を形成し、画像をスクリーン21の被投射面上に拡大投射する表示装置である。プロジェクター20は、外装筐体22を備えている。外装筐体22内には光学ユニット23の他、図示しない制御装置、冷却装置、及び電源装置等が収納されている。
(1)本実施形態によれば、プロジェクター20は光源44及び波長変換部57を備えている。光源44が射出する励起光49の波長を波長変換部57が変換する。波長変換部57は、熱を放熱する第1基板57aと蛍光体を有する第2基板57bとが接合膜57dで接合された接合体である。第2基板57bに励起光49が照射されるとき、第2基板57bが発光する。このとき、照射した励起光49と異なる波長の黄色光58を発光することにより波長が変換される。
特許文献2では、金属粒径を1種類にして、ペースト用溶剤の量を変えて粒子の密度が異なる領域を複数設置した。そして、伝熱し易く耐衝撃性の小さい領域と伝熱し難く耐衝撃性の大きな領域を設置した。この複数の領域を製造するプロセスでは温度プロファイルを細かく制御する必要があった。詳しくは、ペースト用溶剤中に有機溶媒が多く残る温度域では昇温速度を遅く、有機溶媒が少なくなる温度域では昇温速度を早くする制御を行っていた。そして、ペースト用溶剤の量が異なる領域が設定されているので、複雑な温度プロファイルの設定が必要であった。
(変形例1)
前記第1の実施形態では、ステップS3のペースト設置工程において第1基板2にペースト13を設置した。第1基板2にペースト13を設置せずに第2基板3にペースト13を設置しても良い。そして、ペースト13を設置するときに第2基板3の平面視において第1ペースト11の周りに第2ペースト12を設置する。製造装置を利用する上でこちらの方が製造し易いときには、第2基板3にペースト13を設置するのが良い。このときにも、第2基板3の温度分布のばらつきを小さくすることができる。そして、衝撃荷重により第2基板3に生じる応力を緩和することができる。
前記第1の実施形態では、接合膜4が第1領域4a及び第2領域4bの2つの領域で構成された。接合膜4は3つ以上の領域で構成されていても良い。図19は接合膜の構造を示す模式側断面図である。図19に示すように、接合体としての蛍光体素子70は第1基板2と第2基板3とを接合する接合膜71を備えている。接合膜71は第1領域71a、第2領域71b及び第3領域71cを有している。
前記第1の実施形態では、第1領域4aは第2基板3の中央に配置され、第2領域4bは第1領域4aの周りに配置されていた。第2基板3の外周に近い場所の温度が高くなるときには、第2領域4bが第2基板3の中央に配置され、第1領域4aが第2領域4bの周りに配置されても良い。効率良く第2基板3の熱を第1基板2に伝導させることができる。
Claims (6)
- 第1基板と、
前記第1基板と対向する第2基板と、
前記第1基板と前記第2基板とを接合する接合膜と、を備え、
前記接合膜は、複数種の金属ナノ粒子を含み、
前記接合膜は第1領域及び第2領域を有し、前記第1基板の平面視において前記第1領域は前記第2領域より前記金属ナノ粒子の密度が高いことを特徴とする接合体。 - 請求項1に記載の接合体であって、
前記第1領域は前記第2基板の中央に配置され、前記第2領域は前記第1領域の周りに配置されていることを特徴とする接合体。 - 請求項1または2に記載の接合体であって、
前記第1基板の平面視において前記接合膜は前記第2基板の周りの少なくとも一部から突出しており、
前記第2基板において前記第1基板側の逆側の面である上面には前記接合膜が設置されていないことを特徴とする接合体。 - 請求項1〜3のいずれか一項に記載の接合体であって、
前記第1基板には前記第1領域の外周に沿って第1溝が設置され、前記第2領域の外周に沿って第2溝が設置されていることを特徴とする接合体。 - 第1基板または第2基板の片面に複数種の金属ナノ粒子を含むペーストを設置し、
前記ペーストを前記第1基板及び前記第2基板で挟み、
前記ペーストを焼成する工程を有し、
前記ペーストは第1ペーストと前記第1ペーストより金属ナノ粒子の密度の低い第2ペーストとを有し、
前記ペーストを設置するときに前記第1基板または前記第2基板の平面視において前記第1ペーストの周りに前記第2ペーストを設置することを特徴とする接合体の製造方法。 - 光源と、
前記光源が射出する光の波長を変換する波長変換部と、を備え、
前記波長変換部は、熱を放熱する第1基板と蛍光体を有する第2基板とが接合膜で接合された接合体であり、
前記波長変換部には前記請求項1〜4のいずれか一項に記載の接合体が用いられていることを特徴とするプロジェクター。
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