JP6191016B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6191016B2 JP6191016B2 JP2014545548A JP2014545548A JP6191016B2 JP 6191016 B2 JP6191016 B2 JP 6191016B2 JP 2014545548 A JP2014545548 A JP 2014545548A JP 2014545548 A JP2014545548 A JP 2014545548A JP 6191016 B2 JP6191016 B2 JP 6191016B2
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- 239000004065 semiconductor Substances 0.000 title claims description 377
- 239000003990 capacitor Substances 0.000 claims description 149
- 239000000758 substrate Substances 0.000 claims description 73
- 229910052751 metal Inorganic materials 0.000 claims description 48
- 239000002184 metal Substances 0.000 claims description 48
- 238000001514 detection method Methods 0.000 claims description 23
- 150000004767 nitrides Chemical class 0.000 claims description 8
- 230000000052 comparative effect Effects 0.000 description 53
- 230000004048 modification Effects 0.000 description 53
- 238000012986 modification Methods 0.000 description 53
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 50
- 229910002601 GaN Inorganic materials 0.000 description 48
- 238000010586 diagram Methods 0.000 description 23
- 230000006870 function Effects 0.000 description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 15
- 229910052710 silicon Inorganic materials 0.000 description 15
- 239000010703 silicon Substances 0.000 description 15
- 230000001965 increasing effect Effects 0.000 description 11
- 229910052581 Si3N4 Inorganic materials 0.000 description 8
- 230000001939 inductive effect Effects 0.000 description 8
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- UIAFKZKHHVMJGS-UHFFFAOYSA-N 2,4-dihydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1O UIAFKZKHHVMJGS-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
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- 229910052737 gold Inorganic materials 0.000 description 4
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- 229910002704 AlGaN Inorganic materials 0.000 description 3
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
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- 230000009467 reduction Effects 0.000 description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000013642 negative control Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 239000013641 positive control Substances 0.000 description 2
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- FFQALBCXGPYQGT-UHFFFAOYSA-N 2,4-difluoro-5-(trifluoromethyl)aniline Chemical compound NC1=CC(C(F)(F)F)=C(F)C=C1F FFQALBCXGPYQGT-UHFFFAOYSA-N 0.000 description 1
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- 229910000980 Aluminium gallium arsenide Inorganic materials 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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Description
この(式1)において、インダクタンス成分XLはインピーダンス表示として(式2)として表され、キャパシタンス成分XCはインピーダンス表示として(式3)として表される。
XC=1/(j(2πf)C) ・・・(式3)
ここでjは虚数単位、fは周波数、Lは金属線904のインダクタンス値、パッド906による容量値を表す。
図1Aは第1の実施形態に係る半導体装置の構成を示す上面図であり、図1Bは断面図である。図2は図1Aの破線部で示す領域150の拡大図である。
反射係数 ρ=(Z− Z0)/(Z+ Z0)・・・(式5)
|ρ|=(SWR−1)/(SWR+1)・・・(式6)
定在波比 SWR=(1+|ρ|)/(1−|ρ|)・・・(式7)
なお、基準インピーダンスはZ0、比較対象のインピーダンスはZで表される。
配線パターン109、111の形状は上記の形状に限らず、例えば、本変形例のような形状にしてもよい。
本変形例に係る半導体装置は、第1の実施形態に係る半導体装置100と比較して、半導体装置の等価回路においてインダクタL2となる素子を、半導体チップ101に形成された配線パターンと、半導体チップ101と誘電体基板108とを接続するボンディングワイヤとで構成し、キャパシタ111と、配線パターン110とキャパシタ111とを接続するボンディングワイヤ114を備えない点が異なる。
本変形例に係る半導体装置は、第1の実施形態の変形例2に係る半導体装置とほぼ同じであるが、さらに、隣り合う配線パターン501間にキャパシタを備え、配線パターン110とキャパシタとを接続するボンディングワイヤを備える点が異なる。
本実施形態に係る半導体装置は、第1の実施形態に係る半導体装置100と比較して、誘電体基板、及び、半導体チップと誘電体基板とを接続するボンディングワイヤを備えず、半導体チップの上に形成され、かつ、GaN系HFETに隣接して設けられた容量素子と、半導体チップの上に形成され、かつ、容量素子の一方の電極とGaN系HFETの出力端子とを電気的に接続するスタブ用配線とを有し、容量素子の他方の電極は接地され、スタブ用配線と容量素子とにより、動作周波数以上の信号を通過させる高域通過型整合回路が形成されている。
図12は、スタブ用配線205の長さが450μmの場合における本実施例に係る半導体装置200と、高域通過型整合回路を備えない比較例の半導体装置との、小信号時におけるインピーダンスと大信号におけるインピーダンスとを示すスミスチャートである。
図13は、スタブ用配線205の長さが250μmの場合における本実施例に係る半導体装置200と、高域通過型整合回路を備えない比較例の半導体装置との、小信号時におけるインピーダンスと大信号におけるインピーダンスとを示すスミスチャートである。
本実施形態に係る半導体装置は、第1の実施形態に係る半導体装置100と比較してほぼ同じであるが、さらに、ダイオードと、ダイオードのアノード及びカソードの一方にバイアス電圧を印加するための印加端子とを備え、ダイオードのアノード及びカソードの一方はキャパシタ111の一方の電極に電気的に接続され、ダイオードのアノード及びカソードの他方は接地されている点が異なる。
本変形例に係る半導体装置は、第3の実施形態に係る半導体装置300とほぼ同じであるが、キャパシタ117がダイオードD1と直列に設けられている点が異なる。
本実施形態に係る半導体装置は、第3の実施形態に係る半導体装置300と比較して、半導体チップ101の出力電力を検波する検波回路と、検波回路の検波結果に基づいてカソード端子電圧Vkを生成し、バイアス印加用パッド119に印加するバイアス電圧生成部とを備える。
本変形例に係る半導体装置は、第4の実施形態に係る半導体装置400Aと比較して、検波回路が半導体チップ101の入力電力を検波する点が異なる。
101,201 半導体チップ
102 ゲートパッド
103,203 ソースパッド
104 ドレインパッド
105 ゲート端子
106 ソース端子
107 ドレイン端子
108 誘電体基板
109,110,207,501,1101 配線パターン
111,117,206,305,309,505,C1,C2,C3,C4 キャパシタ
112,113,114,502,503,504 ボンディングワイヤ
115,308,D1 ダイオード
116 LC高域通過型整合回路
118 接地用配線
119 バイアス印加用パッド
150 領域
202 ゲート引出し配線
204 ドレイン引出し配線
205 スタブ用配線
208 オープンスタブ
301 電力増幅器
302 主線路
303 副線路
304,310 抵抗素子
306,L1,L2,L3,L4 インダクタ
307 バイアス回路
311 制御部
312 制御端子
320 方向性結合器
801 電界効果トランジスタ(FET)
802 回路
901 トランジスタチップ
904 金属線
906,907 パッド
908 誘電体チップ
910 出力用ストリツプ線路
1091 突起部
Claims (6)
- 半導体素子と、前記半導体素子に隣り合って配置された誘電体基板と、前記半導体素子と前記誘電体基板とを接続する第1の配線及び第2の配線とを有し、
前記誘電体基板は、表面に形成された第1の金属層および第2の金属層と、裏面に形成された接地金属層とを備え、
前記半導体素子は、能動素子と、当該能動素子の出力端に接続された出力端子とを備え、
前記第1の金属層は、前記第2の金属層よりも前記半導体素子の前記出力端子に近い位置に形成され、
前記第1の金属層と前記接地金属層とで第1の容量素子が形成され、
前記第2の金属層と前記接地金属層とで第2の容量素子が形成され、
前記出力端子は、前記第1の配線を介して前記第1の金属層と電気的に接続され、前記第2の配線を介して前記第2の金属層と電気的に接続され、
前記第1の配線と前記第1の容量素子とにより、動作周波数以上の信号を通過させる高域通過型整合回路が形成され、
さらに、第1の電極と、接地された第2の電極とを有する第3の容量素子を備え、
前記半導体装置は、さらに、前記第1の配線を介して、前記半導体素子の前記出力端子と前記容量素子の前記第1電極とを接続する第3の配線を備え、
前記高域通過型整合回路は、さらに、前記第3の配線と前記第3の容量素子とを含む
半導体装置。 - 半導体素子と、前記半導体素子に隣り合って配置された誘電体基板と、前記半導体素子と前記誘電体基板とを接続する第1の配線及び第2の配線とを有し、
前記誘電体基板は、表面に形成された第1の金属層および第2の金属層と、裏面に形成された接地金属層とを備え、
前記半導体素子は、能動素子と、当該能動素子の出力端に接続された出力端子とを備え、
前記第1の金属層は、前記第2の金属層よりも前記半導体素子の前記出力端子に近い位置に形成され、
前記第1の金属層と前記接地金属層とで第1の容量素子が形成され、
前記第2の金属層と前記接地金属層とで第2の容量素子が形成され、
前記出力端子は、前記第1の配線を介して前記第1の金属層と電気的に接続され、前記第2の配線を介して前記第2の金属層と電気的に接続され、
前記第1の配線と前記第1の容量素子とにより、動作周波数以上の信号を通過させる高域通過型整合回路が形成され、
さらに、第1の電極及び第2の電極を有する第3の容量素子と、ダイオードと、前記ダイオードのアノード及びカソードの一方にバイアス電圧を印加するための印加端子とを備え、
前記ダイオードのアノード及びカソードの前記一方は前記第2の電極に電気的に接続され、
前記ダイオードのアノード及びカソードの他方は接地され、
前記第1の電極は、前記第1の配線に電気的に接続されている
半導体装置。 - 前記印加端子は、前記半導体素子に形成された金属電極であるバイアス印加用パッドである
請求項2記載の半導体装置。 - さらに、
前記半導体素子の出力電力を検波する検波回路と、
前記検波回路の検波結果に基づいて前記バイアス電圧を生成し、前記端子に印加するバイアス電圧生成部とを備える
請求項2又は3に記載の半導体装置。 - さらに、
前記半導体素子の入力電力を検波する検波回路と、
前記検波回路の検波結果に基づいて前記バイアス電圧を生成し、前記端子に印加するバイアス電圧生成部とを備える
請求項2又は3に記載の半導体装置。 - 前記能動素子は、III族窒化物半導体により形成されている
請求項1〜5のいずれか1項に記載の半導体装置。
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