JP7391210B2 - 半導体装置およびその製造方法ならびに電力変換装置 - Google Patents
半導体装置およびその製造方法ならびに電力変換装置 Download PDFInfo
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- JP7391210B2 JP7391210B2 JP2022527416A JP2022527416A JP7391210B2 JP 7391210 B2 JP7391210 B2 JP 7391210B2 JP 2022527416 A JP2022527416 A JP 2022527416A JP 2022527416 A JP2022527416 A JP 2022527416A JP 7391210 B2 JP7391210 B2 JP 7391210B2
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- H01L2224/4911—Disposition the connectors being bonded to at least one common bonding area, e.g. daisy chain
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- H—ELECTRICITY
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- H01L2224/852—Applying energy for connecting
- H01L2224/85201—Compression bonding
- H01L2224/85205—Ultrasonic bonding
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- H01L2224/85205—Ultrasonic bonding
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- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
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- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L24/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
Description
実施の形態1に係る半導体装置について説明する。図1および図2に示すように、半導体装置1では、半導体素子2が形成された半導体基板3(半導体デバイス)の一方の主面に、金属配線13がボンディングされるボンディング領域20が規定されている。金属配線13として、たとえば、銅配線(ワイヤ)が接続されている。
ここでは、第2構造体となる金属層77(図7参照)に、第2凹凸部8を意図的に形成する場合について説明する。たとえば、金属層77に、下地の形状が反映されない場合には、金属層77に第2凹凸部8を形成する必要がある。また、第1構造体5の第1凹凸部6とは異なるパターンを有する第2凹凸部8を金属層77に形成する場合がある。
上述した半導体装置1では、第1凹凸部6は、ドット状の凸部となる態様で形成され、第2凹凸部8は、そのドット状の第1凹凸部6を反映したドット状の凸部が形成されている場合を例に挙げて説明した。ここでは、第1凹凸部6および第2凹凸部8の、凸部または凹部のパターンのバリエーションについて説明する。
ここでは、第1構造体5と第2構造体7との間に中間構造体を介在させた半導体装置について説明する。中間構造体は、第1構造体5と第2構造体7との密着性の向上のために形成される。また、中間構造体は、第1構造体5と第2構造体7との間でそれぞれの材料の拡散を抑制するために形成される。
実施の形態1では、第1構造体5として、複数の凸部が互いに離間する態様で、半導体基板3の主面に配置されている場合について説明した。ここでは、連続した膜状の第1構造体5を備えた半導体装置の一例について説明する。
ここでは、ボンディング領域20における第1構造体5のバリエーションについて説明する。
図26に示すように、ボンディング領域20における第1領域21では、第1構造体5として、第1凹凸部6の複数の凸部が互いに離間する態様で半導体基板3の主面に配置された第1構造体5aが形成されている。一方、ボンディング領域20における第2領域23では、第1構造体5として、第1凹凸部6を有する連続した膜状の第1構造体5bが形成されている。
図27に示すように、ボンディング領域20における第1領域21では、第1構造体5として、第1凹凸部6を有する連続した膜状の第1構造体5aが形成されている。一方、ボンディング領域20における第2領域23では、第1構造体5として、第1凹凸部6の複数の凸部が互いに離間する態様で半導体基板3の主面に配置された第1構造体5bが形成されている。
ここでは、ボンディング領域20として、一つの領域からなるボンディング領域20を備えた半導体装置1について説明する。
図28に示すように、ボンディング領域20は一の領域25からなる。一の領域25は、絶縁性部材11によって規定されている。一の領域25では、第1構造体5として、第1凹凸部6を有する連続した膜状の第1構造体5が形成されている。その第1構造体5を覆うように、第2凹凸部8を有する第2構造体7が形成されている。
図29に示すように、ボンディング領域20は一の領域25からなる。一の領域25は、絶縁性部材11によって規定されている。一の領域25では、第1構造体5として、第1凹凸部6の複数の凸部が互いに離間する態様で半導体基板3の主面に配置された第1構造体5が形成されている。その第1構造体5を覆うように、第2凹凸部8を有する第2構造体7が形成されている。
ここでは、上述した実施の形態1~4において説明した半導体装置を適用した電力変換装置について説明する。本開示は特定の電力変換装置に限定されるものではないが、以下、実施の形態5として、三相のインバータに本開示を適用した場合について説明する。
Claims (16)
- 半導体素子が形成された半導体基板と、
前記半導体基板に規定されたボンディング領域と、
前記半導体基板に接するように形成され、前記ボンディング領域を規定する絶縁性部材と、
第1凹凸部を有し、前記ボンディング領域に形成された第1構造体と、
第2凹凸部を有し、前記第1構造体を覆うように形成された第2構造体と、
前記第2構造体における前記第2凹凸部に接合された金属配線とを有し、
前記第2凹凸部における凹みの深さは、前記第1凹凸部における凹みの深さよりも浅く、
前記絶縁性部材は、前記第1構造体および前記第2構造体を取り囲むように形成された、半導体装置。 - 半導体素子が形成された半導体基板と、
前記半導体基板に規定されたボンディング領域と、
第1凹凸部を有し、前記ボンディング領域に形成された第1構造体と、
前記第1構造体上に形成された中間構造体と、
第2凹凸部を有し、前記第1構造体及び前記中間構造体を覆うように形成された第2構造体と、
前記第2構造体における前記第2凹凸部に接合された金属配線とを有し、
前記第2凹凸部における凹みの深さは、前記第1凹凸部における凹みの深さよりも浅い、半導体装置。 - 前記第1構造体と前記第2構造体との間に、中間構造体を介在させた、請求項1に記載の半導体装置。
- 前記第1構造体は、凸部が互いに離間される態様で断続的に形成された前記第1凹凸部を含む、請求項1~3のいずれか1項に記載の半導体装置。
- 前記第1構造体は、連続する膜状に形成された前記第1凹凸部を含む、請求項1~3のいずれか1項に記載の半導体装置。
- 前記ボンディング領域は、
第1面積を有する第1領域と、
前記第1面積よりも小さい第2面積を有する第2領域とに区画された、請求項1~5のいずれか1項に記載の半導体装置。 - 前記第1構造体および前記第2構造体は、少なくとも前記第2領域に配置された、請求項6記載の半導体装置。
- 前記第2構造体は、ビッカース硬度が300以上の金属から形成された、請求項1~7のいずれか1項に記載の半導体装置。
- 前記金属は、ニッケル(Ni)、コバルト(Co)およびクロム(Cr)を含む、請求項8記載の半導体装置。
- 前記第1構造体は、酸化物を含む、請求項1~9のいずれか1項に記載の半導体装置。
- 前記金属配線は、銅配線を含む、請求項1~10のいずれか1項に記載の半導体装置。
- 半導体基板の主面に半導体素子を形成する工程と、
前記半導体基板の前記主面に、第1凹凸部を有する第1構造体を形成する工程と、
前記第1構造体を覆うように、第2凹凸部を有する第2構造体を形成する工程と、
前記第1構造体および前記第2構造体を少なくとも取り囲むように、絶縁性部材を形成することにより、ボンディング領域を規定する工程と、
前記ボンディング領域における前記第2構造体に、金属配線を接合する工程とを備え、
前記第1構造体を形成する工程および前記第2構造体を形成する工程では、前記第1構造体と前記第2構造体とは、前記第2凹凸部における凹みの深さが、前記第1凹凸部における凹みの深さよりも浅くなるように形成され、
前記ボンディング領域を規定する工程は、前記絶縁性部材を前記半導体基板の前記主面に達する態様で形成する工程を含む、
半導体装置の製造方法。 - 前記第1構造体を形成する工程は、前記半導体基板の前記主面上に第1層を形成し、前記第1層に、前記半導体基板の前記主面を部分的に露出する加工を施すことによって、凸部が離間された断続的な前記第1凹凸部を形成する工程を含む、請求項12記載の半導体装置の製造方法。
- 前記第1構造体を形成する工程は、前記半導体基板の前記主面上に第1層を形成し、前記第1層に、前記半導体基板の前記主面に至る途中まで加工を施すことによって、連続する膜状の前記第1凹凸部を形成する工程を含む、請求項12記載の半導体装置の製造方法。
- 前記金属配線を前記第2構造体に接合する工程は、前記金属配線として銅配線を接合する工程を含む、請求項12~14のいずれか1項に記載の半導体装置の製造方法。
- 請求項1~11のいずれか1項に記載の半導体装置を有し、入力される電力を変換して出力する主変換回路と、
前記主変換回路を制御する制御信号を前記主変換回路に出力する制御回路とを備えた、電力変換装置。
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JP2013080809A (ja) | 2011-10-04 | 2013-05-02 | Panasonic Corp | 半導体装置 |
JP2014027048A (ja) | 2012-07-25 | 2014-02-06 | Renesas Electronics Corp | 半導体ウェハ及び半導体装置の製造方法 |
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JP2013080809A (ja) | 2011-10-04 | 2013-05-02 | Panasonic Corp | 半導体装置 |
JP2014027048A (ja) | 2012-07-25 | 2014-02-06 | Renesas Electronics Corp | 半導体ウェハ及び半導体装置の製造方法 |
JP6310551B2 (ja) | 2013-06-13 | 2018-04-11 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 放射線療法治療の案内および検証のための検出器 |
JP6364035B2 (ja) | 2016-01-29 | 2018-07-25 | 京セラ株式会社 | 携帯電話、表示制御方法、およびプログラム |
JP2020043154A (ja) | 2018-09-07 | 2020-03-19 | 三菱電機株式会社 | 半導体装置及びその製造方法、並びに、電力変換装置 |
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