JP6997670B2 - 配線基板及びその製造方法 - Google Patents
配線基板及びその製造方法 Download PDFInfo
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- JP6997670B2 JP6997670B2 JP2018082294A JP2018082294A JP6997670B2 JP 6997670 B2 JP6997670 B2 JP 6997670B2 JP 2018082294 A JP2018082294 A JP 2018082294A JP 2018082294 A JP2018082294 A JP 2018082294A JP 6997670 B2 JP6997670 B2 JP 6997670B2
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- insulating layer
- electronic component
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- opening
- wiring
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Description
まず、第1の実施の形態に係る配線基板の構造について説明する。図1は、第1の実施の形態に係る配線基板を例示する図であり、図1(a)は断面図、図1(b)はキャビティ及び電子部品を示す部分平面図である。なお、図1(a)のキャビティ及び電子部品近傍の断面は、図1(b)のA-A線に沿う断面である。又、図1(b)において、電子部品30よりも上層(絶縁層17、配線層18、ソルダーレジスト層19、及び外部接続端子20)の図示は省略されている。
次に、第1の実施の形態に係る配線基板の製造方法について説明する。図2~図8は、第1の実施の形態に係る配線基板の製造工程を例示する図である。なお、ここでは、1つの配線基板を作製する工程の例を示すが、配線基板となる複数の部分を作製し、その後個片化して各配線基板とする工程としてもよい。
第1の実施の形態の変形例1では、第1の実施の形態とは形状の異なる電子部品を搭載する例を示す。なお、第1の実施の形態の変形例1において、既に説明した実施の形態と同一構成部品についての説明は省略する場合がある。
電子部品30Aにおいて、保護層33に形成された配線層32を露出する開口部33xが凹部である。電子部品30Aにおいて、領域E1は凹部の体積が相対的に小さく、領域E2は凹部の体積が相対的に大きい。
第1の実施の形態の変形例2では、電子部品搭載用パッドの開口部に連通する溝部を絶縁層に設ける例を示す。なお、第1の実施の形態の変形例2において、既に説明した実施の形態と同一構成部品についての説明は省略する場合がある。
第1の実施の形態の変形例3では、電子部品搭載用パッドに形成する開口部の平面形状のバリエーションの例を示す。なお、第1の実施の形態の変形例3において、既に説明した実施の形態と同一構成部品についての説明は省略する場合がある。
第1の実施の形態の応用例では、第1の実施の形態に係る配線基板に半導体チップを搭載した半導体パッケージの例を示す。なお、第1の実施の形態の応用例において、既に説明した実施の形態と同一構成部品についての説明は省略する場合がある。
10 コア層
10a 一方の面
10b 他方の面
10x 貫通孔
11 貫通配線
12、14、16、18、22、24、26、28 配線層
13、15、17、23、25、27 絶縁層
13x、15x、17x、17y、23x、25x、27x ビアホール
13y、13z 溝部
14a、16a、18a、24a、26a、28a ビア配線
14b、16b、18b、24b、26b、28b 配線パターン
14c 電子部品搭載用パッド
14d、14e、14f、14g、14h 開口部
15z キャビティ
19、29 ソルダーレジスト層
19x、29x、33x 開口部
20 外部接続端子
30、30A、30B、30C 電子部品
31 本体
32 配線層
32a パッド
32b 配線パターン
33 保護層
34 接着層
100 半導体パッケージ
110 半導体チップ
120 電極パッド
130、150 バンプ
140 アンダーフィル樹脂
301 第1辺
302 第2辺
303 第3辺
304 第4辺
Claims (10)
- 電子部品搭載用パッドを露出するキャビティを備えた第1絶縁層と、
前記キャビティ内に露出する前記電子部品搭載用パッドを貫通する開口部と、
前記キャビティ内に露出する電子部品搭載用パッド上に、前記開口部を露出するように搭載された電子部品と、
前記第1絶縁層上に、前記電子部品を被覆して形成された第2絶縁層と、を有し、
前記電子部品の前記第2絶縁層側の最外層には、所定の体積分布を有する凹部が形成されており、
前記開口部の位置及び大きさは、前記所定の体積分布に基づいて決定されており、
前記最外層は、前記凹部の体積が相対的に小さい領域と、前記凹部の体積が相対的に大きい領域と、を含み、
平面視において、前記凹部の体積が相対的に大きい領域よりも前記凹部の体積が相対的に小さい領域に近い位置に前記開口部が形成されており、
前記第2絶縁層が前記凹部、前記電子部品の側面と前記キャビティの内壁面との隙間、及び前記開口部に入り込んでいる配線基板。 - 電子部品搭載用パッドを露出するキャビティを備えた第1絶縁層と、
前記キャビティ内に露出する前記電子部品搭載用パッドを貫通する開口部と、
前記キャビティ内に露出する電子部品搭載用パッド上に、前記開口部を露出するように搭載された電子部品と、
前記第1絶縁層上に、前記電子部品を被覆して形成された第2絶縁層と、を有し、
前記電子部品の前記第2絶縁層側の最外層には、所定の体積分布を有する凹部が形成されており、
前記開口部の位置及び大きさは、前記所定の体積分布に基づいて決定されており、
前記キャビティ内に複数の電子部品が搭載され、
複数の前記電子部品は、前記最外層における前記凹部の体積が相対的に小さい電子部品と、前記最外層における前記凹部の体積が相対的に大きい電子部品と、を含み、
平面視において、前記凹部の体積が相対的に大きい電子部品よりも前記凹部の体積が相対的に小さい電子部品に近い位置に前記開口部が形成されており、
前記第2絶縁層が前記凹部、前記電子部品の側面と前記キャビティの内壁面との隙間、及び前記開口部に入り込んでいる配線基板。 - 前記最外層は配線層を含み、前記凹部は前記最外層において前記配線層が形成されていない部分である請求項1又は2に記載の配線基板。
- 前記最外層は配線層を被覆する保護層であり、前記凹部は前記保護層に形成され前記配線層を露出する開口部である請求項1又は2に記載の配線基板。
- 前記第1絶縁層の下層に第3絶縁層を有し、
前記電子部品搭載用パッドは前記第3絶縁層上に形成され、
前記第3絶縁層には、前記開口部と連通する溝部が形成されており、
前記第2絶縁層が前記凹部、前記電子部品の側面と前記キャビティの内壁面との隙間、前記開口部、及び前記溝部に入り込んでいる請求項1乃至4の何れか一項に記載の配線基板。 - 前記溝部は前記第3絶縁層を貫通し、
前記溝部の底面は、前記第3絶縁層の下層となる配線層の表面により形成されている請求項5に記載の配線基板。 - 第1絶縁層に電子部品搭載用パッドを露出するキャビティを形成する工程と、
前記キャビティ内に露出する前記電子部品搭載用パッドを貫通する開口部を形成する工程と、
前記キャビティ内に露出する前記電子部品搭載用パッド上に、前記開口部を露出するように電子部品を搭載する工程と、
前記第1絶縁層上に、前記電子部品を被覆する第2絶縁層を形成する工程と、を有し、
前記電子部品の前記第2絶縁層側の最外層には、所定の体積分布を有する凹部が形成されており、
前記開口部の位置及び大きさは、前記所定の体積分布に基づいて決定されており、
前記最外層は、前記凹部の体積が相対的に小さい領域と、前記凹部の体積が相対的に大きい領域と、を含み、
平面視において、前記凹部の体積が相対的に大きい領域よりも前記凹部の体積が相対的に小さい領域に近い位置に前記開口部が形成されており、
前記第2絶縁層を形成する工程では、前記第1絶縁層上に前記第2絶縁層となる樹脂を前記電子部品を被覆するように配置し、前記樹脂を前記凹部、前記電子部品の側面と前記キャビティの内壁面との隙間、及び前記開口部に入り込ませる配線基板の製造方法。 - 第1絶縁層に電子部品搭載用パッドを露出するキャビティを形成する工程と、
前記キャビティ内に露出する前記電子部品搭載用パッドを貫通する開口部を形成する工程と、
前記キャビティ内に露出する前記電子部品搭載用パッド上に、前記開口部を露出するように電子部品を搭載する工程と、
前記第1絶縁層上に、前記電子部品を被覆する第2絶縁層を形成する工程と、を有し、
前記電子部品の前記第2絶縁層側の最外層には、所定の体積分布を有する凹部が形成されており、
前記開口部の位置及び大きさは、前記所定の体積分布に基づいて決定されており、
前記キャビティ内に複数の電子部品が搭載され、
複数の前記電子部品は、前記最外層における前記凹部の体積が相対的に小さい電子部品と、前記最外層における前記凹部の体積が相対的に大きい電子部品と、を含み、
平面視において、前記凹部の体積が相対的に大きい電子部品よりも前記凹部の体積が相対的に小さい電子部品に近い位置に前記開口部が形成されており、
前記第2絶縁層を形成する工程では、前記第1絶縁層上に前記第2絶縁層となる樹脂を前記電子部品を被覆するように配置し、前記樹脂を前記凹部、前記電子部品の側面と前記キャビティの内壁面との隙間、及び前記開口部に入り込ませる配線基板の製造方法。 - 前記開口部を形成する工程と前記電子部品を搭載する工程との間に、前記第1絶縁層の下層となる第3絶縁層に前記開口部と連通する溝部を形成する工程を有し、
前記第2絶縁層を形成する工程では、前記樹脂を前記凹部、前記電子部品の側面と前記キャビティの内壁面との隙間、前記開口部、及び前記溝部に入り込ませる請求項7又は8に記載の配線基板の製造方法。 - 前記溝部を形成する工程では、前記第3絶縁層を貫通し、前記第3絶縁層の下層となる配線層の表面を露出するように前記溝部を形成する請求項9に記載の配線基板の製造方法。
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JP2014112626A (ja) | 2012-11-09 | 2014-06-19 | Taiyo Yuden Co Ltd | 電子部品内蔵基板 |
JP2014225604A (ja) | 2013-05-17 | 2014-12-04 | 株式会社村田製作所 | 樹脂多層基板およびその製造方法 |
JP2015170669A (ja) | 2014-03-05 | 2015-09-28 | 新光電気工業株式会社 | 配線基板、及び、配線基板の製造方法 |
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