JP2007053360A - 半導体素子埋め込み支持板の積層構造 - Google Patents
半導体素子埋め込み支持板の積層構造 Download PDFInfo
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- JP2007053360A JP2007053360A JP2006215065A JP2006215065A JP2007053360A JP 2007053360 A JP2007053360 A JP 2007053360A JP 2006215065 A JP2006215065 A JP 2006215065A JP 2006215065 A JP2006215065 A JP 2006215065A JP 2007053360 A JP2007053360 A JP 2007053360A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 121
- 229910000679 solder Inorganic materials 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000003475 lamination Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 100
- 230000008859 change Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
【解決手段】少なくとも1つの開口21cがそれぞれ形成され、接続層25により一体に積層されている2つの支持板21と、それらの支持板の開口内にそれぞれ固設され、複数の電極パッド22cを有するアクティブ面22aを含む少なくとも2つの半導体素子22と、該半導体素子22のアクティブ面22aおよび支持板21の表面21aに形成され、該電極パッド22cに対応する部位に少なくとも1つの貫通孔26が形成されている少なくとも1つの誘電層23と、該誘電層23の貫通孔26に形成され、該誘電層23の表面に形成された少なくとも1つの回路層24を該半導体素子22の電極パッド22cに電気的に接続している少なくとも1つの導電構造24aと、を備えることにより、立体に組み立てられたモジュール化構造。
【選択図】図2−C
Description
れた回路板において、回路が微細化されていなければならず、パッケージの軽薄短小化の要求を満たすこともできない。回路の微細化による回路板面積の縮小はその効果が限られ、電気的性能およびモジュール化機能を向上させるために半導体チップ121、122を直接積層させることについても、積層されるチップの数量が限られているため、連続的に拡充増加させることができず、パッケージの軽薄短小化の目的を達成することが難しい。
、該回路ビルドアップ構造の表面にソルダーレジスト層が形成され、該ソルダーレジスト層の表面に複数の開口が形成され、回路ビルドアップ構造の接続パッドが露出され、該ソルダーレジスト層の開口に該接続パッドに電気的に接続される導電素子が形成されることにより、半導体素子が支持板に封止される回路板構造が構成されている。
該半導体素子が支持板に埋め込まれ、半導体素子のアクティブ面および支持板の表面に誘電層、回路層および該半導体素子に電気的に接続される電極パッドが形成されることにより、モジュール化構造が形成され、その上に回路ビルドアップ構造が形成されるため、使用上の要求に応じて自由に組み合わせを変えて、必要とする記憶容量を構成することができる。
[第1の実施形態]
図2-A〜図2-Cは、本発明に係る半導体素子埋め込み支持板の積層構造の断面を模式的に示す。
表面21bを有し、該支持板21に第1および第2の表面21a、21bを貫通させる少なくとも1つの開口21cが形成され、該支持板21は、絶縁板または回路を有する回路板であり、それらの開口21c内に少なくとも1つの半導体素子22が搭載され、接着材料(図示せず)により半導体素子22が支持板21の開口21c内に固着されている。該半導体素子22は、例えば能動素子および受動素子のいずれか一つまたはそれらの組み合わせからなり、該能動素子は例えばメモリであり、該受動素子は例えば抵抗器、キャパシターまたはインダクター等の電子素子である。該半導体素子22は、アクティブ面22aおよびそれに対向する非アクティブ面22bを有し、該アクティブ面22aに複数の電極パッド22cが設けられ、それらの半導体素子22のアクティブ面22aが同一の方向に同一の支持板21の開口21cに固着されている。
1の表面21aに誘電層23が形成され、該誘電層23の表面に回路層24が形成され、該回路層24は、誘電層23に形成される導電構造24aを有し、該導電構造24aは、該半導体素子22の電極パッド22cに電気的に接続されている。
の支持板21の第2の表面21bに対向して積層され、すなわち上下が逆の方向になるように(反対側に)、一体に積層されてもよく、また、該支持板21は、第1の表面21aが他の支持板21の第1の表面21aに対向して積層され、すなわち上下が逆の方向になるように(反対側に)一体に積層されてもよく(図示せず)、また、図2-Dに示すよう
に、それらの支持板21は、第1の表面21aの誘電層23および回路層24が他の支持板の第2の表面21bに対向して積層され、すなわち上下が同一方向になるように(同じ側に)積層されてもよく、該誘電層23、回路層24、接続層25および2つの支持板21を、少なくとも1つのめっきスルーホール26により貫通させ、該めっきスルーホール26が回路層24に電気的に接続され、支持板21に埋め込まれたそれらの半導体素子22の間が電気的に接続されようになり、モジュール化構造を成している。
該半導体素子22は支持板21の開口21cに埋め込まれ、支持板21には複数の半導体素子22を埋め込むことができるため、支持板21に搭載される半導体素子22の数量を増加させ、その記憶容量を増加させることができる。また、該半導体素子22のアクティブ面22aおよび支持板21の第1の表面21aに誘電層23および導電構造24aを有する回路層24がさらに形成され、該導電構造24aが該半導体素子22の電極パッド22cに電気的に接続され、少なくとも2つの支持板21が接続層25により一体に積層され、めっきスルーホール26によりそれらの回路層24に接続されることにより、より多くの半導体素子22が電気的に接続され、全体の体積が縮小され、従来のようなチップの直接積層またはワイヤンディングにおける欠点を回避できる。
また、半導体素子22が支持板21に埋め込まれたうえで該支持板21が積層されることにより、必要に応じて異なる組み合わせや変更を行うことができ、異なる使用上の要求に応えることが可能となり、より好ましい変更の自由度が得られる。
[第2の実施形態]
図3-A〜図3-Bは、本発明に係る半導体素子埋め込み支持板の積層構造のもう一つの実施形態の断面を模式的に示す。第1の実施形態と異なる点は、該半導体素子のアクティブ面が同一支持板内において異なる方向で支持板の開口に埋め込まれる点である。
搭載され、この半導体素子32が接着材料(図示せず)により支持板31の開口31c内に固着され、該半導体素子32のアクティブ面32aが支持板31の第1の表面31aおよび第2の表面31bに選択的に形成されることにより、該支持板31の第1の表面および第2の表面31a、31bがそれぞれ半導体素子32のアクティブ面32aを有している。
33および導電構造34aを有する回路層34がそれぞれ形成され、該導電構造34aが該半導体素子32の電極パッド32bに電気的に接続されることにより、該支持板31の上下両面のそれぞれが回路層34を有し、回路が支持板31の両面に分散するようになっている。
[第3の実施形態]
図4-Aおよび図4-Bは、本発明に係る半導体素子埋め込み支持板の積層構造のさらにもう一つの実施形態の断面を模式的に示す。前記実施形態と異なる点は該支持板41の開口41cが貫通されておらず、且つ該開口41cの方向が支持板41の第1の表面41aまたは第2の表面41bに選択的に形成される点であり、該開口41c内に半導体素子42が搭載されることにより、該半導体素子42のアクティブ面42aを全て同一の方向または異なる方向に向けることができ、また、半導体素子42のアクティブ面42aおよび支持板41の表面に誘電層43および導電構造44aを有する回路層44が形成され、該導電構造44aが該半導体素子42の電極パッド42bに電気的に接続されることにより
、同様に全体体積の縮小による軽薄短小化が図られ、組み合わせや変更の自由度が増し、異なる使用上の要求に応えられるようになっている。
[第4の実施形態]
図5-A〜図5-Cは、本発明に係る半導体素子埋め込み支持板の積層構造のさらに別の実施形態の断面を模式的に示す。前記の実施形態と異なる点は、該支持板の開口が貫通されておらず且つ支持板の第1の表面および第2の表面に選択的に形成される点である。
つの貫通しない開口51cが形成され、該開口51cの開口方向が支持板51の第1の表面51aおよび第2の表面51bに選択的に形成され、該開口51c内に半導体素子52が搭載され、該半導体素子52の電極パッド52bを有するアクティブ面52aが該支持板51の開口51cの外に露出されるように開口内に固着されることにより、該支持板51の上下両面がいずれも半導体素子52のアクティブ面52aを有する。
半導体素子52のアクティブ面52aのそれぞれに誘電層53が形成され、該誘電層53の表面に回路層54が形成される。該回路層54は誘電層53に形成された導電構造54aを有し、該導電構造54aが該半導体素子52の電極パッド52bに電気的に接続されることにより、該支持板51の第1および第2の表面51a、51bが回路層54に接続される。
他の支持板51の第2の表面51bに対向して積層され、すなわち上下が逆の方向になるように積層されてもよく(図5-Dに示す)、且つ該誘電層53、回路層54、接続層5
5および少なくとも2つの支持板51を少なくとも1つのめっきスルーホール56により貫通させ、該めっきスルーホール56によりそれぞれの回路層54が接続されることにより、支持板51に埋め込まれたそれらの半導体素子52の間が電気的に接続されてモジュール化構造を成している。
[第5の実施形態]
図6は、本発明に係る半導体素子埋め込み支持板の積層構造のさらにまた別の実施形態の断面を模式的に示す。支持板61に開口61aが設けられ、該開口61aに半導体素子62が埋め込まれ、該半導体素子62のアクティブ面62aおよび支持板61の表面に誘電層63が形成され、該誘電層63の表面に導電構造64aを有する回路層64が形成され、該導電構造64aが該半導体素子62の電極パッド62bに電気的に接続され、少なくとも1つの接続層65により支持板61が積層され、少なくとも1つのめっきスルーホール66により該回路層64が電気的に接続される。図に示す構造は説明のためのものであり、この実施形態に限定されるものではなく、上述の各タイプの積層構造であってよい。
該半導体素子62が支持板61の開口61aに埋め込まれ、該半導体素子62のアクティブ面62aおよび支持板61の表面に誘電層63および回路層64が形成されたうえで、積層されてめっきスルーホール66により接続されモジュール化構造を形成し、その上に回路ビルドアップ構造67が形成されることによって、半導体素子62を支持板61の中に封止することができ、従来必要とされてきたワイヤボンディングおよび樹脂封止工程を省略することができるため、コストを抑えることが可能となり、また、半導体素子62を直接支持板61に埋め込ませることによって、全体の体積を縮小させることができ、軽薄短小化の目的を達成することができる。
101、16a、21c、31c、41c、51c、61a、68a 開口
11、24、34、44、54、64、67b 回路層
11a、67d 電気接続パッド
11b ボンディングパッド
121、122 半導体チップ
13 ボンディング層
14 導電装置
15 封止樹脂
16 絶縁保護層
17 導電素子
21、31、41、51、61 支持板
21a、31a、41a、51a 第1の表面
21b、31b、41b、51b 第2の表面
22、32、42、52、62 半導体素子
22a、32a、42a、52a、62a アクティブ面
22b 非アクティブ面
22c、32b、42b、52b、62b 電極パッド
23、33、43、53、63、67a 誘電層
24a、34a、44a、54a、64a 導電構造
25、55、65 接続層
26、56、66 めっきスルーホール
67 回路ビルドアップ構造
67c 導電性を有するブラインドビア
68 ソルダーレジスト層
Claims (12)
- 少なくとも1つの開口がそれぞれ形成され、接続層により一体に積層されている2つの支持板と、
それらの支持板の開口内にそれぞれ固設され、複数の電極パッドを有するアクティブ面および前記アクティブ面に対向する非アクティブ面を含む少なくとも2つの半導体素子と、
前記半導体素子のアクティブ面および前記支持板の表面に形成され、少なくとも1つの貫通孔が前記電極パッドに対応する部位に形成されている少なくとも1つの誘電層と、
前記誘電層の貫通孔に形成され、前記誘電層の表面に形成された少なくとも1つの回路層を前記半導体素子の電極パッドに電気的に接続している少なくとも1つの導電構造と、
を備えていることを特徴とする半導体素子埋め込み支持板の積層構造。 - 前記支持板は、絶縁板または回路を有する回路板のいずれか一つであることを特徴とする請求項1に記載の半導体素子埋め込み支持板の積層構造。
- 前記支持板の開口は、非貫通開口または貫通開口のいずれか一つであることを特徴とする請求項1に記載の半導体素子埋め込み支持板の積層構造。
- 前記支持板は、第1の表面および第2の表面を有することを特徴とする請求項1〜3に記載の半導体素子埋め込み支持板の積層構造。
- 前記支持板の開口は、前記支持板の第1の表面および第2の表面のいずれか一つに形成されていることを特徴とする請求項4に記載の半導体素子埋め込み支持板の積層構造。
- 前記支持板は、第1の表面が他の支持板の第2の表面に対向して上下が同一方向になるように(同一側となるように)積層されていることを特徴とする請求項4または5に記載の半導体素子埋め込み支持板の積層構造。
- 前記それらの支持板は、第2の表面が他の支持板の第2の表面に対向して上下が逆の方向になるように(反対側となるように)積層されていることを特徴とする請求項4または5に記載の半導体素子埋め込み支持板の積層構造。
- 前記それらの支持板は、第1の表面が他の支持板の第1の表面に対向して上下が逆の方向になるように(反対側となるように)積層されていることを特徴とする請求項4または5に記載の半導体素子埋め込み支持板の積層構造。
- 前記接続層は、有機接着材料からなることを特徴とする請求項1〜8のいずれかに記載の半導体素子埋め込み支持板の積層構造。
- 前記誘電層、回路層、接続層および2つの支持板を貫通させることで前記半導体素子を電気的に接続するための少なくとも1つのめっきスルーホールをさらに備えていることを特徴とする請求項1〜9に記載の半導体素子埋め込み支持板の積層構造。
- 内部に前記回路層に電気的に接続されるための複数の導電性を有するブラインドビアが形成され、表面には接続パッドが形成されている少なくとも1つの回路ビルドアップ構造が、前記誘電層および回路層の表面に形成されていることを特徴とする請求項1〜10のいずれかに記載の半導体素子埋め込み支持板の積層構造。
- 前記回路ビルドアップ構造の表面にソルダーレジスト層が設けられ、前記ソルダーレジ
スト層の表面の前記積層構造の縁部に対応する位置に少なくとも1つの開口が設けられ、他の導電素子に接続される電気接続パッドとして前記回路ビルドアップ構造の表面の回路層が露出されることを特徴とする請求項11に記載の半導体素子埋め込み支持板の積層構造。
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