JP6573189B1 - 半導体装置 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 326
- 239000000758 substrate Substances 0.000 claims description 69
- 239000012535 impurity Substances 0.000 claims description 62
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 6
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
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- 150000004706 metal oxides Chemical class 0.000 description 1
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- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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Abstract
Description
以下、本実施の形態に係る半導体装置1の構成について説明する。半導体装置1は、1つの縦型MOS(Metal Oxide Semiconductor)トランジスタと、複数の抵抗素子とを内蔵するCSPチップであり、BGA(Ball Grid Array)型の、LGA(Land Grid Array)型、または他の型のCSPチップであってもよい。
図5は、本実施の形態に係る半導体装置1Eの上面透視図であり、図6は、半導体装置1Eの回路図である。
上述の半導体装置1は、縦型MOSトランジスタであるトランジスタ素子100を備える構成であるが、本実施の形態に係る半導体装置は、トランジスタ素子が縦型MOSトランジスタである構成に限定されない。
上述の半導体装置1は、導通電流経路内に、第1の抵抗素子を備える構成であるが、本実施の形態に係る半導体装置は、さらに、第2の抵抗素子を備える構成であってもよい。
上述の半導体装置1Fは、外部第2端子20を備える構成であるが、本実施の形態に係る半導体装置は、外部第2端子20を備える構成に限定されない。
上述の半導体装置1、1A、1F、および1Gは、外部抵抗端子30および第1の抵抗素子110が、図3または図5に示される位置に配置された構成であるが、本実施の形態に係る半導体装置は、それらの構成に限定されない。
図15は、スマートホンなどの電池の充放電回路であり、半導体装置1をこの充放電回路のハイサイド側に設置して、電池1010を瞬時的に放電させる放電回路として使用する場合を一応用例として示している。
10、210、410A、410B、810 外部第1端子
11、211、411A、411B、811 第1電極
20、220、420 外部第2端子
21、221、421 ドレイン外部電極
30、30A〜30F、230、230A〜230F、430、430A〜430E、830、830A〜830G 外部抵抗端子
31、31A〜31F、231A〜231F、431A〜431C、831、831A〜831G 抵抗電極
40、240、440、840 外部制御端子
41、241、441、841 第3電極
51、81 半導体基板
52 第1の低濃度不純物層
53 ボディ領域
54 ソース領域
55、84 ゲート導体
56 ゲート絶縁膜
57 高濃度不純物層
61 絶縁層
62 パッシベーション層
71 金属層
82 ソース内部電極
83 ドレイン内部電極
100、100A〜100C トランジスタ素子
110、110A〜110F、310A〜310L、510、510A〜510J、910、910A、910B 第1の抵抗素子
111、311、511 コンタクト
120、120A〜120F、121、122、123、320A〜320G、321、322A〜322D、520A、520B、521、522、523、921、922A〜922G、923 メタル配線
150、350、550、950 トランジスタ素子領域
160、360、560 ドレイン引き上げ領域
170、370、570、970 ツェナーダイオード領域
190 ツェナーダイオード
280、280A、280B 第1端子領域
290、290A、290B 第2端子領域
300 基板配線
610、710、930、930A、930B 第2の抵抗素子
1010 電池
1020 制御IC
Claims (22)
- 第1電極、第2電極、及び前記第1電極と前記第2電極との間の導通状態を制御する制御電極を有するトランジスタ素子と、複数の第1の抵抗素子と、を有する半導体装置であって、
前記複数の第1の抵抗素子の全ての一方の電極は、前記第2電極に電気的に接続され、
前記複数の第1の抵抗素子の全ての他方の電極がいずれかに接触接続された1以上の外部抵抗端子、前記第1電極に電気的に接続された外部第1端子、及び前記制御電極に電気的に接続された外部制御端子を有し、
前記1以上の外部抵抗端子、前記外部第1端子、及び前記外部制御端子は、前記半導体装置の表面に形成された外部接続端子である
フェースダウン実装チップサイズパッケージ型の半導体装置。 - 前記1以上の外部抵抗端子は、複数であり、前記半導体装置の平面視において、前記半導体装置の平面視面積の半分以上の領域に配置されている
請求項1に記載の半導体装置。 - 前記複数の第1の抵抗素子の全ての他方の電極は、前記半導体装置内で互いに電気的に短絡されている
請求項1に記載の半導体装置。 - 前記複数の第1の抵抗素子の抵抗値は、全て同一である
請求項1に記載の半導体装置。 - 前記第2電極に電気的に接続され、前記半導体装置の表面に形成された外部第2端子を有し、
前記1以上の外部抵抗端子は、複数であり、前記半導体装置の平面視において、前記外部第2端子を中心に放射状に配置されている
請求項1に記載の半導体装置。 - 前記第2電極に電気的に接続され、前記半導体装置の表面に形成された外部第2端子を有し、
前記複数の第1の抵抗素子は、前記半導体装置の平面視において、前記外部第2端子を中心に放射状に配置されている
請求項1に記載の半導体装置。 - 前記第2電極に電気的に接続され、前記半導体装置の表面に形成された外部第2端子を有し、
前記外部第2端子と前記第1電極との電流経路内に形成された第2の抵抗素子を有する
請求項1に記載の半導体装置。 - 前記トランジスタ素子は、第1導電型の不純物を含むシリコンからなる半導体基板と、前記半導体基板の上面に接触して形成され、前記半導体基板の前記第1導電型の不純物の濃度より低い濃度の前記第1導電型の不純物を含む第1の低濃度不純物層と、を有する縦型トランジスタであり、
前記半導体基板は、前記第2電極として働き、
前記第2の抵抗素子は、
前記第1の低濃度不純物層の上面より下方に埋め込まれ、
一方の電極は前記第2電極に電気的に接続され、
他方の電極は前記外部第2端子に電気的に接続されている
請求項7に記載の半導体装置。 - 前記トランジスタ素子は、第1導電型の不純物を含むシリコンからなる半導体基板と、前記半導体基板の上面に接触して形成され、前記半導体基板の前記第1導電型の不純物の濃度より低い濃度の前記第1導電型の不純物を含む第1の低濃度不純物層と、を有する縦型トランジスタであり、
前記半導体基板は、前記第2電極として働き、
前記第1の低濃度不純物層の上面より下方に埋め込まれ、一方の電極は前記第2電極に電気的に接続され、他方の電極は前記複数の第1の抵抗素子のうちの少なくとも1つの第1の抵抗素子の前記一方の電極に電気的に接続された1以上の第2の抵抗素子を有する
請求項1に記載の半導体装置。 - 前記1以上の第2の抵抗素子は、前記複数の第1の抵抗素子と同数、かつ複数であり、
前記1以上の第2の抵抗素子は、前記複数の第1の抵抗素子と1対1に対応付けられており、
前記1以上の第2の抵抗素子のそれぞれの前記他方の電極は、当該第2の抵抗素子に対応付けられた前記複数の第1の抵抗素子の前記一方の電極に電気的に接続されている
請求項9に記載の半導体装置。 - 前記第2の抵抗素子は、不純物を含む半導体層からなる
請求項7に記載の半導体装置。 - 前記第2の抵抗素子は、ポリシリコン層からなる
請求項7に記載の半導体装置。 - 前記半導体装置の平面視における前記外部接続端子の配列において、
前記外部第1端子及び前記外部制御端子を含む端子列には前記1以上の外部抵抗端子を含まず、
前記1以上の外部抵抗端子を含む端子列には前記外部第1端子及び前記1以上の外部制御端子を含まない
請求項1に記載の半導体装置。 - 前記第2電極に電気的に接続され、前記半導体装置の表面に形成された外部第2端子を有し、
前記外部第2端子は、前記半導体装置の平面視において、他の前記外部接続端子よりも前記半導体装置の中央側に配置されている
請求項1に記載の半導体装置。 - 前記半導体装置の平面視における少なくとも1つの前記1以上の外部抵抗端子において、当該外部抵抗端子と前記半導体装置の外周辺との最近接距離は、当該外部抵抗端子に電気的に接続された前記複数の第1の抵抗素子と前記半導体装置の外周辺との最近接距離以下である
請求項1に記載の半導体装置。 - 前記半導体装置の平面視における少なくとも1つの前記1以上の外部抵抗端子において、当該外部抵抗端子の中心点と前記半導体装置の外周辺との最近接距離は、当該外部抵抗端子に電気的に接続された前記複数の第1の抵抗素子の中心点と前記半導体装置の外周辺との最近接距離以下である
請求項1に記載の半導体装置。 - 前記半導体装置の主材料はシリコンであり、前記半導体装置の厚さは250μm以上である
請求項1に記載の半導体装置。 - 前記半導体装置の厚さは350μm以上である
請求項17に記載の半導体装置。 - 前記半導体装置の主材料はシリコンであり、
前記半導体装置の体積は1.94mm3以上である
請求項1に記載の半導体装置。 - 前記半導体装置の体積は2.20mm3以上である
請求項19に記載の半導体装置。 - 前記半導体装置の体積は3.05mm3以上である
請求項20に記載の半導体装置。 - 前記半導体装置の表面に、前記第2電極と同電位の外部端子が形成されていない
請求項1に記載の半導体装置。
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