JP2016082230A - ワイヤボンドを有するパワーオーバーレイ構造体およびその製造方法 - Google Patents
ワイヤボンドを有するパワーオーバーレイ構造体およびその製造方法 Download PDFInfo
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- JP2016082230A JP2016082230A JP2015198983A JP2015198983A JP2016082230A JP 2016082230 A JP2016082230 A JP 2016082230A JP 2015198983 A JP2015198983 A JP 2015198983A JP 2015198983 A JP2015198983 A JP 2015198983A JP 2016082230 A JP2016082230 A JP 2016082230A
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Abstract
【解決手段】パワーオーバーレイ(POL)構造体は、少なくとも1つの上部コンタクトパッドをその上面に配置されて有するパワーデバイスと、パワーデバイスの上面に結合された誘電体層、および誘電体層を貫通して形成されたビアを通って延在する金属相互接続部を有し、パワーデバイスの少なくとも1つの上部コンタクトパッドに電気的に結合された金属被覆層を有するPOL相互接続層とを含む。POL構造体はまた、金属被覆層に直接結合された少なくとも1つの銅のワイヤボンドを含む。
【選択図】図1
Description
12 半導体デバイス
14 ゲートコンタクトパッド
16 エミッタコンタクトパッド
18 半導体デバイスの上面
20 ワイヤボンド
22 ワイヤボンド
24 ワイヤボンド
26 コレクタパッド
28 半導体デバイスの下面
30 はんだ
32 基板
34 POL構造体
36 ウェハ
38 半導体デバイス
40 半導体デバイス
42 半導体デバイス
44 上部コンタクトパッド
46 上部コンタクトパッド
48 上部コンタクトパッド
50 上部コンタクトパッド
52 上部コンタクトパッド
54 上部コンタクトパッド
56 半導体デバイスの上面
58 半導体デバイスの上面
60 半導体デバイスの上面
62 下部コンタクトパッド
64 下部コンタクトパッド
66 下部コンタクトパッド
68 半導体デバイスの下面
70 半導体デバイスの下面
72 半導体デバイスの下面
74 誘電体層
76 接着剤層
78 ビア
80 金属被覆層
82 誘電体層の上面
84 金属相互接続部の第1の部分
86 金属相互接続部の第2の部分
88 POL相互接続層
90 POL構造体
92 POL構造体
94 POL構造体
96 ワイヤボンド
98 ワイヤボンド
100 ワイヤボンド
102 表面接触面積
104 表面接触面積
106 多層基板
108 はんだ
110 非有機セラミック基板
112 上部シート
114 下部シート
116 半導体デバイスの厚さ
118 金属被覆経路の厚さ
120 誘電体層の厚さ
122 POL相互接続層の部分
124 POL相互接続層の部分
126 POL相互接続層の部分
128 ワイヤボンドの接触表面
130 ワイヤボンドの接触表面
132 ワイヤボンドの接触表面
134 POL構造体
136 穴
138 ビア
140 コンタクトパッドの一部分の表面積
142 ワイヤボンドの表面積
144 金属相互接続部
146 上部接触表面
148 上部接触表面の表面積
150 ワイヤボンドの接触表面
152 金属被覆経路の頂面
154 POL構造体の部分
156 POL構造体
158 誘電体層の部分
160 誘電体層の部分
162 ワイヤボンドの接触位置
164 ワイヤボンドの接触位置
166 POL相互接続層
168 ウェハ
170 半導体デバイス
172 半導体デバイス
174 支持構造体
176 上部コンタクトパッド
178 上部コンタクトパッド
180 上部コンタクトパッド
182 上部コンタクトパッド
184 下部コンタクトパッド
186 下部コンタクトパッド
188 半導体デバイスの厚さ
190 半導体デバイスの厚さ
192 シム
194 半導体デバイスのコンタクトパッドの上面
196 半導体デバイスのコンタクトパッドの上面
200 誘電体層
202 接着剤層
204 接着剤層
206 隙間
208 POL相互接続層
210 誘電体層
212 誘電体層の第1の部分
214 誘電体層の第1の部分の第1の厚さ
216 誘電体層の第2の部分
218 誘電体層の第2の部分の第2の厚さ
220 段差
222 ビア
224 金属被覆経路
226 誘電体層の上面
228 金属相互接続部
230 金属相互接続部
232 POL組立体、ウェハ
234 POL組立体
236 POL構造体
238 POL組立体
240 ワイヤボンド
242 ワイヤボンド
244 コンタクトパッド
246 半導体デバイス
Claims (23)
- 少なくとも1つの上部コンタクトパッド(44、46、48、50、52、54)をその上面(56、58、60)に配置されて有するパワーデバイスと、
前記パワーデバイスの前記上面(56、58、60)に結合された誘電体層(74)、および
前記誘電体層(74)を貫通して形成されたビア(78)を通って延在する金属相互接続部(84、86)を有し、前記パワーデバイスの前記少なくとも1つの上部コンタクトパッド(44、46、48、50、52、54)に電気的に結合された金属被覆層(80)
を含むパワーオーバーレイ(POL)相互接続層(88)と、
前記金属被覆層(80)に直接結合された少なくとも1つの銅のワイヤボンド(96、98、100)と
を備えるPOL構造体(90、92、94)。 - 前記少なくとも1つの上部コンタクトパッド(44、46、48、50、52、54)がアルミニウムを含む、請求項1記載のPOL構造体(90、92、94)。
- 前記パワーデバイスの下部コンタクトパッド(62、64、66)にはんだ層(108)で熱的および電気的に結合された多層基板(106)であって、直接接合銅(DBC)および直接接合アルミニウム(DBA)基板のうちの1つを含む多層基板(106)をさらに含む請求項1記載のPOL構造体(90、92、94)。
- 前記少なくとも1つの銅のワイヤボンド(96、98、100)の接触位置の下で、前記誘電体層(74)が実質的に均一な厚さを有する、請求項1記載のPOL構造体(90、92、94)。
- 前記誘電体層(74)が、接着剤層(76)を介して前記パワーデバイスの前記上面(56、58、60)に結合される、請求項1記載のPOL構造体(90、92、94)。
- 前記ワイヤボンド(96)の接触表面(150)と前記パワーデバイスとの間に配置された前記POL相互接続層(88)の一部分に前記誘電体層(74)がない、請求項1記載のPOL構造体(134)。
- 前記金属被覆層(80)の頂面の下に位置決めされた上部接触表面(146)を有する金属相互接続部(144)と、
前記金属相互接続部(144)の前記上部接触表面(146)に結合された銅のワイヤボンド(96)と
をさらに備え、
前記銅のワイヤボンド(96)の接触表面(150)の表面積(142)が、前記金属相互接続部(144)の前記上部接触表面(146)の表面積(148)より小さい、請求項1記載のPOL構造体(134)。 - 前記少なくとも1つのワイヤボンド(96、98、100)の接触表面(128、130、132)が、金属被覆相互接続部を有する前記POL相互接続層(88)の一部分に結合される、請求項1記載のPOL構造体(90)。
- 複数の半導体デバイス(38、40、42)を含むウェハ(36)を提供するステップと、
誘電体層(74)を前記複数の半導体デバイス(38、40、42)のそれぞれの上面(56、58、60)に結合するステップと、
前記複数の半導体デバイス(38、40、42)の少なくとも1つのコンタクトパッド(44、46、48、50、52、54)を露出するように前記誘電体層(74)を貫通する複数のビア(78)を形成するステップと、
前記誘電体層(74)の上面(82)に金属被覆層(80)を形成するステップであって、前記複数のビア(78)を通って延在し、前記複数の半導体デバイス(38、40、42)の前記少なくとも1つのコンタクトパッド(44、46、48、50、52、54)と電気的に結合する金属相互接続部(84、86)を、前記金属被覆層(80)が有する、ステップと、
前記少なくとも1つのワイヤボンド(96、98、100)を前記金属被覆層(80)の頂面に結合するステップと
を含む、パワーオーバーレイ(POL)構造体(34)を製造する方法。 - 前記誘電体層(74)を前記複数の半導体デバイス(38、40、42)の前記それぞれの上面(56、58、60)に結合するステップが、それらの間に接着剤層(76)を配置するステップを含む、請求項9記載の方法。
- 前記ウェハ(36)を複数のPOL構造体(90、92、94)に単体化するステップであって、前記複数のPOL構造体(90、92、94)のそれぞれが、前記誘電体層(74)の一部分、およびその上に形成された前記金属被覆層(80)の一部分を有する少なくとも1つの半導体デバイス(38、40、42)を含む、ステップをさらに含む請求項9記載の方法。
- 前記少なくとも1つのワイヤボンド(96)の表面積(142)より大きなコンタクトパッド(46)の表面積(140)を露出するようにビア(138)を形成するステップと、
前記少なくとも1つのワイヤボンド(96)を前記ビア(138)内に形成された金属相互接続部(144)に結合するステップと
をさらに含む請求項9記載の方法。 - 前記少なくとも1つのワイヤボンド(96)を、金属相互接続部(144)がない前記金属被覆層(80)の一部分に結合するステップをさらに含む請求項9記載の方法。
- 前記誘電体層(200)を前記複数の半導体デバイス(170、172)の前記上面(194、196)に結合する前に、取外し可能な支持構造体(174)を前記複数の半導体デバイス(170、172)の下面に結合するステップをさらに含む請求項9記載の方法。
- 前記誘電体層(200)を前記ウェハ(168)の第1の半導体デバイス(170)および第2の半導体デバイス(172)に結合するステップであって、前記第1の半導体デバイス(170)の厚さ(188)が前記第2の半導体デバイス(172)の厚さ(190)より厚い、ステップをさらに含む請求項9記載の方法。
- 隙間(206)が間に形成されるように、前記第1の半導体デバイス(170)を前記第2の半導体デバイス(172)から離して位置決めするステップをさらに含む請求項15記載の方法。
- 前記第1の半導体デバイス(170)の上面(194)が前記第2の半導体デバイス(172)の上面(196)と実質的に同一平面になるように、前記支持構造体(174)と前記第2の半導体デバイス(172)の前記下面との間にシム(192)を配置するステップをさらに含む請求項15記載の方法。
- 前記誘電体層(210)の第1の部分(212)を前記第1の半導体デバイス(170)に結合するステップと、
前記誘電体層(210)の第2の部分(216)を前記第2の半導体デバイス(172)に結合するステップとをさらに含み、前記誘電体層(210)の前記第2の部分(216)の厚さ(218)が前記誘電体層(210)の前記第1の部分(212)の厚さ(214)より厚い、請求項15記載の方法。 - 第1の半導体デバイス(170)および第2の半導体デバイス(172)と、
前記第1および第2の半導体デバイス(170、172)の上部コンタクトパッド(176、178、180、182)に接着的に結合されたポリイミドフィルム、および
前記ポリイミドフィルムに形成された金属被覆経路(224)であって、
前記ポリイミドフィルムを貫通して形成されたビア(222)を通って延在し、前記第1および第2の半導体デバイス(170、172)の前記上部コンタクトパッド(176、178、180、182)に電気的に結合された複数の金属相互接続部(228、230)を含む金属被覆経路(224)
を含むパワーオーバーレイ(POL)相互接続組立体と、
前記金属被覆経路(224)に直接結合された複数の銅のワイヤボンド(96、240)と
を含む、パワーオーバーレイ(POL)組立体(238)であって、
前記複数の銅のワイヤボンドの第1のワイヤボンド(96)が前記第1の半導体デバイス(170)の上部コンタクトパッド(178)に電気的に結合され、
前記複数の銅のワイヤボンドの第2のワイヤボンド(240)が前記第2の半導体デバイス(172)の上部コンタクトパッド(182)に電気的に結合される、
POL組立体(238)。 - 前記第1のPOL構造体(90)の前記少なくとも1つの銅のワイヤボンド(96)が、前記第2のPOL構造体(236)の前記少なくとも1つの銅のワイヤボンド(240)に電気的に結合される、請求項19記載のPOL組立体(238)。
- 前記第1の半導体デバイス(170)の厚さ(188)が前記第2の半導体デバイス(172)の厚さ(190)と異なり、
可変厚さを有するポリイミドフィルムと、前記第1および第2の半導体デバイス(170、172)のうちの1つの底面に結合されたシム(192)とのうちの1つを含む、請求項19記載のPOL組立体(232、234)。 - 前記第1のワイヤボンド(96)が、実質的に前記ポリイミドフィルムがない前記POL相互接続組立体の一部分に結合される、請求項19記載のPOL組立体。
- 前記第1のワイヤボンド(96)が前記POL相互接続組立体の一部分に結合され、前記ポリイミドフィルムが実質的に均一な厚さを有する、請求項19記載のPOL組立体。
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