JP5330184B2 - 電子部品装置 - Google Patents
電子部品装置 Download PDFInfo
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- JP5330184B2 JP5330184B2 JP2009232372A JP2009232372A JP5330184B2 JP 5330184 B2 JP5330184 B2 JP 5330184B2 JP 2009232372 A JP2009232372 A JP 2009232372A JP 2009232372 A JP2009232372 A JP 2009232372A JP 5330184 B2 JP5330184 B2 JP 5330184B2
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- interposer
- wiring board
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- electronic component
- wiring
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- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49827—Via connections through the substrates, e.g. pins going through the substrate, coaxial cables
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Description
配線基板本体を構成する樹脂基板(有機基板)11の形態としては、少なくとも最外層の配線層が基板内部を通して相互に電気的に接続された形態のものであれば十分である。例えば、ビルドアップ法を用いた多層構造の配線基板を利用することができる。これは、ベース基材としてのコア基板(ガラスエポキシ基板等)を中心としてその両面に、絶縁層の形成、絶縁層におけるビアホールの形成、ビアホールの内部を含めた配線パターン(配線層)の形成を順次繰り返して積み上げていくものである。絶縁層の材料としては代表的にエポキシ樹脂が用いられ、配線層の材料としては銅(Cu)が用いられる。かかるプロセスを経て形成された最外層の配線層12,13は、基板内部の所要箇所に適宜形成された各配線層及び各配線層間を相互に接続するビアを介して電気的に接続されている。
「ロジック」チップ1を実装するためのインターポーザ20と、「メモリ」チップ2を実装するためのインターポーザ30は、サイズの違いこそあれ、基本的には同じプロセスを用いて作製することができる。
例えば、12インチの大きさのシリコンウエハに対し、その一方の面側に所要のデバイスプロセスを施して複数のデバイス(「ロジック」デバイス、又は「メモリ」デバイス)をアレイ状に作り込み、そのデバイスが形成されている側の面に窒化シリコン(SiN)やリンガラス(PSG)等からなるパッシベーション膜を形成し、各デバイス上に所要のパターンで形成されたアルミニウム(Al)の配線層の一部分に画定される電極パッドに対応する部分のパッシベーション膜をレーザ等により除去する。
先ず、「ロジック」チップ1に熱結合させるためのヒートスプレッダ3を用意する。例えば、大きさが30×30mm程度の厚めの銅板を用意し、この銅板の周囲に沿った部分を残して他の部分(中央部分)を、例えば、プレスやエッチング加工などにより、所要の深さまで凹部状に除去する。これにより、図示のようにその主要部分が板状に成形された板状部3aとその周囲に一体的に形成された側壁部3bとからなる構造体が出来上がる。さらに、この構造体の全面にニッケル(Ni)めっきを施すことで、所要のヒートスプレッダ3を得ることができる。
1a,2a…電極パッド(端子)、
3…ヒートスプレッダ(放熱部材)、
10(11)…配線基板(樹脂基板/有機基板)、
12, 13, 23,24,26,33,34,36…配線層、
12P,13P,23P,24P,26P,33P,34P,36P…パッド、
14,15,27,28,37,38…ソルダレジスト層(絶縁層/保護膜)、
16…はんだボール(外部接続端子)、
20,30…(シリコン)インターポーザ、
21,31…シリコン基板(基材)、
22,32…貫通電極、
25,35…絶縁層、
41,42,45,46…はんだバンプ(導電性部材)、
43,44,47,48…アンダーフィル樹脂、
50…インターポーザ実装配線基板(パッケージ)、
60,60a…半導体装置(電子部品装置)。
Claims (4)
- 両面に配線層を有し、該配線層が基板内部を通して相互に電気的に接続された配線基板と、
前記配線基板の一方の面側の配線層にバンプにより電気的に接続され、実装される第1の電子部品が有する熱膨張係数と同じ値もしくはこれに近似した値の熱膨張係数を有する第1のインターポーザと、
前記第1のインターポーザの前記配線基板に対向する側と反対側の面に実装された前記第1の電子部品と、
前記配線基板の他方の面側の配線層にバンプにより電気的に接続され、実装される第2の電子部品が有する熱膨張係数と同じ値もしくはこれに近似した値の熱膨張係数を有する第2のインターポーザと、
前記第2のインターポーザの前記配線基板に対向する側と反対側の面に実装された前記第2の電子部品と、
前記配線基板と、前記第1、第2のインターポーザとの間に充填されたアンダーフィル樹脂と、
前記第1の電子部品と熱的に結合され、かつ、前記第2の電子部品から熱的に遮断された放熱部材と
を備え、
前記第1の電子部品は、前記第2の電子部品と比べて動作時の発熱量が大きいデバイスであることを特徴とする電子部品装置。 - 前記第1、第2の各インターポーザは、その基材がシリコンから形成されており、前記配線基板は、その基材が樹脂から形成されていることを特徴とする請求項1に記載の電子部品装置。
- 前記第1、第2の各インターポーザは、前記配線基板を挟んで対向する位置に配設されていることを特徴とする請求項1又は2に記載の電子部品装置。
- 前記配線基板の前記第2のインターポーザが実装されている側の面に、外部接続端子が接合されていることを特徴とする請求項1乃至3のいずれか一項に記載の電子部品装置。
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