JP7344297B2 - 3次元積層造形による回路配線の製造方法 - Google Patents
3次元積層造形による回路配線の製造方法 Download PDFInfo
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Description
図1に積層ユニット形成装置10を示す。積層ユニット形成装置10は、搬送装置20と、第1造形ユニット22と、第2造形ユニット24と、装着ユニット26と、第3造形ユニット200と、制御装置27(図2,図3参照)を備える。それら搬送装置20、第1造形ユニット22、第2造形ユニット24、装着ユニット26、第3造形ユニット200は、積層ユニット形成装置10のベース28の上に配置されている。ベース28は、平面視において概して長方形状をなしている。以下の説明では、ベース28の長手方向をX軸方向、ベース28の短手方向をY軸方向、X軸方向及びY軸方向の両方に直交する方向をZ軸方向と称して説明する。
本実施形態の積層ユニット形成装置10は、上記した構成によって、回路配線及び電子部品を含んだ積層ユニットを複数造形し、複数の積層ユニットを組み立てることで3次元積層電子デバイスを製造する。詳述すると、コントローラ120は、第1造形ユニット22を制御し、金属インクを硬化することで回路配線を形成する。また、コントローラ120は、第2造形ユニット24を制御し、紫外線硬化樹脂を硬化させることで絶縁層を形成する。コントローラ120は、回路配線や絶縁層の形状を変更することで、任意の形状の積層ユニットを造形することが可能となっている。
第1樹脂材料223のようなガラス転移点Tg1が、加熱温度C1よりも高い樹脂材料を用いる場合、次式を満たす加熱温度C1を用いることによって、回路配線221の膨れ等を効果的に抑制できる。
(加熱温度C1-室温)×第1線膨張係数α1<上限値 ・・・(式1)
式1の室温は、積層ユニット形成装置10を設置した部屋の温度である。即ち、室温とは、回路配線221の造形を行なう環境の温度である。また、上限値は、回路配線形成工程の加熱による絶縁層218の膨張の上限を示す値であり、例えば、6000ppmが好ましい。
第2樹脂材料225のようなガラス転移点Tg2が、加熱温度C1よりも低い樹脂材料を用いる場合、次式を満たす加熱温度C1を用いることによって、回路配線221の膨れ等を効果的に抑制できる。
(ガラス転移点Tg2-室温)×第1線膨張係数α3+(加熱温度C1-ガラス転移点Tg2)×第2線膨張係数α4<上限値 ・・・(式2)
上限値は、回路配線形成工程の加熱による絶縁層218の膨張の上限を示す値であり、例えば、6000ppmが好ましい。(式2)の上限値は、上記した(式1)の上限値と同様に、使用する樹脂材料の種類などに応じて、適切な値を設定することができる。また、(式1)の上限値と、(式2)の上限値とは、異なる値でも良い。
以上詳細に説明したようにして、本実施形態の回路配線221の製造方法では、絶縁層218の上に、金属インク219を吐出する図4の吐出工程と、絶縁層218の上に吐出した金属インク219を、加熱温度C1で加熱して硬化させ回路配線221を形成する図5の回路配線形成工程とを含む。そして、図5の回路配線形成工程において、紫外線硬化樹脂のガラス転移点Tg1,Tg2、第1線膨張係数α1、第1線膨張係数α3、第2線膨張係数α4、及び室温に基づく加熱温度C1で加熱する。
なお、本開示は上記実施形態に限定されるものでなく、その趣旨を逸脱しない範囲で様々な変更が可能である。
例えば、絶縁層218を構成する樹脂は、紫外線硬化樹脂に限らず、例えば、熱可塑性樹脂や熱硬化性樹脂でも良い。
また、上記実施形態では、積層ユニット形成装置10は、本開示の樹脂材料として、紫外線硬化樹脂を硬化した絶縁層218を、3次元積層造形により形成した。しかしながら、積層ユニット形成装置10は、3次元積層造形以外の方法(射出成形など)で形成した樹脂材料の上に回路配線221を形成しても良い。
上記した積層ユニット形成装置10の構成は一例であり、適宜変更可能である。例えば、積層ユニット形成装置10は、電子部品を装着するための装着ユニット26や装着部102を備えなくとも良い。また、積層ユニット形成装置10は、冷却装置66を備えなくとも良い。
また、上記実施形態では、積層ユニット形成装置10は、第1樹脂材料223と第2樹脂材料225の2種類の樹脂による造形を実施可能な構成であったが、どちらか一方の樹脂のみの造形を実施可能な構成でも良い。
218 絶縁層(樹脂材料)
219 金属インク(金属粒子を含む流体)
221 回路配線
223 第1樹脂材料(樹脂材料)
225 第2樹脂材料(樹脂材料)
Tg1,Tg2 ガラス転移点
α1 第1線膨張係数
α2 第2線膨張係数
α3 第1線膨張係数
α4 第2線膨張係数
Claims (2)
- 樹脂材料で形成された樹脂部材の上に、金属粒子を含む流体を吐出する吐出工程と、
前記樹脂部材の上に吐出した前記金属粒子を含む流体を、加熱温度で加熱して硬化させ回路配線を形成する工程であって、前記樹脂材料のガラス転移点、前記樹脂材料の線膨張係数、及び室温に基づく前記加熱温度で加熱する回路配線形成工程と、
を含み、
前記回路配線形成工程は、
前記吐出工程で吐出された前記金属粒子を含む流体を、吐出された位置において前記加熱温度で加熱して硬化させ、吐出した位置に前記回路配線を形成する工程であり、
前記樹脂材料は、
前記ガラス転移点が、前記加熱温度に比べて高い材料であり、
前記ガラス転移点以下における前記線膨張係数である第1線膨張係数、前記回路配線形成工程の加熱による前記樹脂部材の膨張の上限を示す上限値を用いて、次式、
(前記加熱温度-室温)×前記第1線膨張係数<上限値
を満たす前記加熱温度により前記回路配線形成工程における加熱を行ない、
前記回路配線形成工程の加熱による前記樹脂部材の膨張の上限を示す上限値とは、
前記回路配線形成工程の加熱によって前記樹脂部材が膨張する膨張量であって、前記回路配線に膨れ及び割れが発生しない範囲の上限を示す膨張量であり、
前記回路配線形成工程において、前記樹脂部材の上に吐出した前記金属粒子を含む流体を加熱する際に、前記樹脂部材を載置する基材を冷却して、前記樹脂部材の温度上昇を抑制する、3次元積層造形による回路配線の製造方法。 - 前記基材の上に前記樹脂材料を吐出する第2吐出工程と、
前記基材の上に吐出した前記樹脂材料を硬化する硬化工程と、
前記第2吐出工程及び前記硬化工程を繰り返し実行し、前記樹脂部材として絶縁層を形成する絶縁層形成工程と、
を含む、請求項1に記載の3次元積層造形による回路配線の製造方法。
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US20100055302A1 (en) | 2008-09-04 | 2010-03-04 | Samsung Electro-Mechanics Co., Ltd. | Reducing agent for low temperature reducing and sintering of copper nanoparticles, and method for low temperature sintering using the same |
WO2013182896A1 (en) | 2012-06-05 | 2013-12-12 | Showa Denko K.K. | Substrate film and sintering method |
JP2017183645A (ja) | 2016-03-31 | 2017-10-05 | コニカミノルタ株式会社 | 三次元造形物の製造方法 |
WO2017221347A1 (ja) | 2016-06-22 | 2017-12-28 | 富士機械製造株式会社 | 回路形成方法、および回路形成装置 |
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KR101195408B1 (ko) * | 2006-09-13 | 2012-10-29 | 스미토모 베이클라이트 가부시키가이샤 | 반도체 장치 |
US10667403B2 (en) * | 2014-09-19 | 2020-05-26 | Fuji Corporation | Manufacturing apparatus for performing additive manufacturing of an electrical device |
EP3716741A4 (en) | 2017-11-21 | 2020-11-18 | Fuji Corporation | PROCESS FOR THE PRODUCTION OF A THREE-DIMENSIONAL MULTILAYER ELECTRONIC DEVICE, AND THREE-DIMENSIONAL MULTILAYER ELECTRONIC DEVICE |
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US20100055302A1 (en) | 2008-09-04 | 2010-03-04 | Samsung Electro-Mechanics Co., Ltd. | Reducing agent for low temperature reducing and sintering of copper nanoparticles, and method for low temperature sintering using the same |
WO2013182896A1 (en) | 2012-06-05 | 2013-12-12 | Showa Denko K.K. | Substrate film and sintering method |
JP2017183645A (ja) | 2016-03-31 | 2017-10-05 | コニカミノルタ株式会社 | 三次元造形物の製造方法 |
WO2017221347A1 (ja) | 2016-06-22 | 2017-12-28 | 富士機械製造株式会社 | 回路形成方法、および回路形成装置 |
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