JP6907332B2 - パッケージおよび半導体装置 - Google Patents
パッケージおよび半導体装置 Download PDFInfo
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- JP6907332B2 JP6907332B2 JP2019554062A JP2019554062A JP6907332B2 JP 6907332 B2 JP6907332 B2 JP 6907332B2 JP 2019554062 A JP2019554062 A JP 2019554062A JP 2019554062 A JP2019554062 A JP 2019554062A JP 6907332 B2 JP6907332 B2 JP 6907332B2
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- 239000004065 semiconductor Substances 0.000 title claims description 54
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 2
- 229910002113 barium titanate Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Description
誘電体(1):BaO−Al2O3−SiO2−Bi2O3 (k=7)
誘電体(2):BaO−TiO2−ZnO (k=27)
誘電体(3):BaO−Nd2O3−Bi2O3−TiO2 (k=81)
誘電体(4):BaO−R2O3−TiO2 (k=125)
誘電体(5):high−k材 (k≧1000)
のいずれかであることが好ましい。なお上記において、括弧内の値kは、典型的な比誘電率である。第1の誘電体層の誘電体と第2の誘電体層の誘電体とは、互いに異なるように選択される。よって第1および第2誘電体層の少なくともいずれかは、上記誘電体(1)〜(4)のいずれかであることが好ましい。high−k材は、例えばチタン酸バリウムまたはチタン酸バリウム系材料であってよい。以上のような材料選択によって、誘電体層110の積層体を、その内部に電極構造を設けつつ、低温同時焼成セラミックス(Low Temperature Co−fired Ceramics(LTCC))として容易に形成し得る。
本実施の形態によれば、パッケージの枠体100は、第1の誘電率を有する第1の誘電体層と、第1の誘電率と異なる第2の誘電率を有する第2の誘電体層とを含む。これにより枠体を用いてインピーダンス整合を行う構成の設計の自由度が高められる。よってパッケージの枠体を用いてのインピーダンス整合をより十分に行なうことができる。例えば、高キャパシタンスを有するキャパシタが形成される領域に、高い誘電率を有する誘電体を適用することによって、枠体100のサイズを抑えることができる。このとき、高い耐電圧を要する領域には、絶縁信頼性を優先して、より低い誘電率を有する誘電体が適用されてよい。
枠体100の構成は、求められるインピーダンス整合に応じて適宜変更され得る。具体的には、複数の誘電体層110のすべてが、同じ誘電率を有していてもよい。素子接続部121A,121Bは、枠上面S2上においてリードフレーム20A,20Bから電気的に分離されていなくてもよい。ビア電極140は省略されてもよい。ビア電極140のいずれもが、枠体100の素子接続部121A,121Bから分離されていてもよい。フレーム接続部122A,122Bは省略されてもよい。ビア電極140のいずれもがフレーム接続部122A,122Bから分離されていてもよい。電極層130は省略されてもよい。ベース接続部125は省略されてもよい。複数の誘電体層110の数は、図1においては4つであるが、2つ以上の任意の数であってよい。複数の誘電体層110の数が2つである場合、中間誘電体層は存在しない。なお枠体100によって、整合回路に加えてさらに他の回路が構成されてもよい。
S1 枠下面(第1の面)
S2 枠上面(第2の面)
10 ベース板
11 実装領域
12 枠領域
121A,121B 素子接続部
20A,20B リードフレーム
100 枠体
100A 入力整合回路
100B 出力整合回路
110 誘電体層
122A,122B フレーム接続部
130 電極層
140 ビア電極
181,183,184 キャパシタ
182,185 インダクタ
300 半導体素子
301 半導体部
311 裏面電極
312A,312B 端子
400A,400B 配線部
500 蓋体
700 半導体装置
Claims (8)
- 半導体素子(300)が実装されることになる実装領域(11)と前記実装領域(11)を囲む枠領域(12)とを有し、金属からなるベース板(10)と、
前記ベース板(10)の前記枠領域(12)上に設けられ、前記枠領域(12)に面する第1の面(S1)と前記第1の面(S1)の反対の第2の面(S2)とを有する枠体(100)と、
前記枠体(100)の前記第2の面(S2)に接合されたリードフレーム(20A,20B)と、
を備え、
前記枠体(100)は、積層構造を有する複数の誘電体層(110)と、前記半導体素子(300)に電気的に接続されることになる素子接続部(121A,121B)とを含み、前記複数の誘電体層(110)は、第1の誘電率を有する第1の誘電体層と、前記第1の誘電率と異なる第2の誘電率を有する第2の誘電体層とを含む、
パッケージ。 - 前記枠体(100)の前記素子接続部(121A,121B)は前記第2の面(S2)上において前記リードフレーム(20A,20B)から電気的に分離されている、請求項1に記載のパッケージ。
- 前記枠体(100)は、前記複数の誘電体層(110)の少なくともいずれかを貫通する少なくとも1つのビア電極(140)を有している、請求項1または2に記載のパッケージ。
- 前記少なくとも1つのビア電極(140)は、前記枠体(100)の前記素子接続部(121A,121B)につながるビア電極(140)を含む、請求項3に記載のパッケージ。
- 前記枠体(100)は、前記リードフレーム(20A,20B)に接続されたフレーム接続部(122A,122B)を有しており、
前記少なくとも1つのビア電極(140)は、前記フレーム接続部(122A,122B)につながるビア電極(140)を含む、請求項3または4に記載のパッケージ。 - 前記枠体(100)は、前記複数の誘電体層(110)の間に挟まれた少なくとも1つの電極層(130)を有している、請求項1から5のいずれか1項に記載のパッケージ。
- 請求項1から6のいずれか1項に記載のパッケージと、
前記パッケージの前記ベース板(10)の前記実装領域(11)上に実装され、端子(312A,312B)を有する半導体素子(300)と、
前記パッケージの前記枠体(100)の前記素子接続部(121A,121B)と、前記半導体素子(300)の前記端子(312A,312B)との間を接続する配線部(400A,400B)と、
を備える、半導体装置(700)。 - 前記半導体素子(300)の前記端子(312A,312B)は、前記半導体素子(300)からの電気信号を5オーム以下の特性インピーダンスで出力するものであり、前記リードフレーム(20A,20B)は、前記電気信号を50オームの特性インピーダンスで出力するものである、請求項7に記載の半導体装置(700)。
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