JP7169039B2 - 半導体デバイスのワイヤボールボンディング - Google Patents
半導体デバイスのワイヤボールボンディング Download PDFInfo
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- JP7169039B2 JP7169039B2 JP2020558663A JP2020558663A JP7169039B2 JP 7169039 B2 JP7169039 B2 JP 7169039B2 JP 2020558663 A JP2020558663 A JP 2020558663A JP 2020558663 A JP2020558663 A JP 2020558663A JP 7169039 B2 JP7169039 B2 JP 7169039B2
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- palladium
- aluminum
- semiconductor device
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- 239000004065 semiconductor Substances 0.000 title claims description 115
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 124
- 229910052782 aluminium Inorganic materials 0.000 claims description 117
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 93
- 229910052763 palladium Inorganic materials 0.000 claims description 71
- 239000011248 coating agent Substances 0.000 claims description 45
- 238000000576 coating method Methods 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 32
- 239000002344 surface layer Substances 0.000 claims description 27
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 15
- 230000015572 biosynthetic process Effects 0.000 claims description 14
- 239000010410 layer Substances 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims 2
- 238000007254 oxidation reaction Methods 0.000 claims 2
- 238000005755 formation reaction Methods 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-O oxonium Chemical compound [OH3+] XLYOFNOQVPJJNP-UHFFFAOYSA-O 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler 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
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- KDLHZDBZIXYQEI-NJFSPNSNSA-N palladium-108 Chemical compound [108Pd] KDLHZDBZIXYQEI-NJFSPNSNSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
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- H01L2924/153—Connection portion
- H01L2924/1531—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
- H01L2924/15311—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/35—Mechanical effects
- H01L2924/351—Thermal stress
- H01L2924/3512—Cracking
- H01L2924/35121—Peeling or delaminating
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Wire Bonding (AREA)
Description
Claims (20)
- ワイヤボンディングを用いて半導体デバイスの構成要素を相互接続する方法であって、
パラジウムを含む被覆を有する被覆アルミニウムワイヤを提供することと、
前記被覆アルミニウムワイヤの第1の端部からフリーエアボールを形成することであって、前記フリーエアボールの形成の間に前記フリーエアボールの少なくとも一部から前記被覆が除去される、前記フリーエアボールを形成することと、
前記フリーエアボールを半導体チップ上のボンドパッドにボンドすることであって、前記ボンドパッドがアルミニウム表面層を有し、前記フリーエアボールと前記ボンドパッドのアルミニウム表面層とが均質のアルミニウム対アルミニウムボールボンドを形成する、前記フリーエアボールをボンドすることと、
前記被覆アルミニウムワイヤの反対の第2の端部をリードフレーム上のリードにボンドすることであって、前記リードがパラジウム表面層を有し、前記被覆アルミニウムワイヤの第2の端部と前記パラジウム表面層とが均質のパラジウム対パラジウムボンドを形成する、前記第2の端部をボンドすることと、
を含む、方法。 - 請求項1に記載の方法であって、
前記被覆が、前記フリーエアボールの形成の間に前記フリーエアボールの酸化を防止する、方法。 - 請求項1に記載の方法であって、
前記均質のパラジウム対パラジウムボンドがスティッチボンドである、方法。 - 請求項1に記載の方法であって、
前記フリーエアボールが電気的フレームオフワンドを用いて作成される、方法。 - 請求項4に記載の方法であって、
前記電気的フレームオフワンドが150~170ミリアンペアの範囲の電流を用いる、方法。 - 請求項1に記載の方法であって、
前記半導体チップを前記リードフレームに取り付けることと、
前記均質のアルミニウム対アルミニウムボールボンドと前記均質のパラジウム対パラジウムボンドとをモールディング化合物で覆うことと、
前記半導体チップと前記リードフレームとを個々の半導体パッケージに分離することと、
を更に含む、方法。 - 半導体デバイスであって、
リードを含むリードフレームであって、前記リードがパラジウム表面層を有する、前記リードフレームと、
第1の側と反対の第2の側とを有する半導体ダイであって、前記半導体ダイの第2の側が前記リードフレームに取り付けられ、前記半導体ダイが、前記第1の側にアルミニウムボンドパッドを有し、前記リードに近接する、前記半導体ダイと、
第1端部と反対の第2の端部とを有するパラジウム被覆アルミニウム相互接続ワイヤと、
前記アルミニウムボンドパッドと前記パラジウム被覆アルミニウム相互接続ワイヤの第1の端部との間のボールボンドであって、均質のアルミニウム対アルミニウムボールボンドである、前記ボールボンドと、
前記リードと前記パラジウム被覆アルミニウム相互接続ワイヤの第2の端部との間のボンドであって、均質のパラジウム対パラジウムボンドである、前記ボンドと、
を含む、半導体デバイス。 - 請求項7に記載の半導体デバイスであって、
前記パラジウム被覆アルミニウム相互接続ワイヤが、パラジウム銅被覆を形成するための銅を更に含む、半導体デバイス。 - 請求項7に記載の半導体デバイスであって、
前記ボンドがスティッチボンドである、半導体デバイス。 - 請求項7に記載の半導体デバイスであって、
前記ボールボンドがパラジウムを含まない、半導体デバイス。 - 請求項7に記載の半導体デバイスであって、
前記ボールボンドが前記アルミニウムボンドパッドから離れた第1の部分と前記アルミニウムボンドパッドに近接した第2の部分とを有し、前記第1の部分が前記第2の部分よりも多くのパラジウム被覆を有する、半導体デバイス。 - 請求項7に記載の半導体デバイスであって、
前記均質のアルミニウム対アルミニウムボールボンドと前記均質のパラジウム対パラジウムボンドとの上の絶縁被覆を更に含む、半導体デバイス。 - 請求項7に記載の半導体デバイスであって、
前記均質のアルミニウム対アルミニウムボールボンドに酸化がない、半導体デバイス。 - 半導体デバイスであって、
支持構造と、
前記支持構造に取り付けられる半導体ダイであって、前記半導体ダイ上のボンドパッドを有し、前記ボンドパッドがアルミニウム表面層を有する、前記半導体ダイと、
前記半導体ダイに近接し、パラジウム表面層を有するボンドサイトと、
前記半導体ダイ上のボンドパッドを前記ボンドサイトに接続するための被覆アルミニウムワイヤであって、アルミニウムコアと、パラジウムを含む被覆と、前記被覆のない第1の端部と、反対の第2の端部とを含む、前記被覆アルミニウムワイヤと、
前記被覆アルミニウムワイヤの第1の端部と前記ボンドパッドのアルミニウム表面層との間に形成されるアルミニウム対アルミニウムのボールボンドと、
前記被覆アルミニウムワイヤの第2の端部と前記ボンドサイトのパラジウム表面層との間に形成されるパラジウムボンド対パラジウムのボンドと、
を含む、半導体デバイス。 - 請求項14に記載の半導体デバイスであって、
前記支持構造が半導体基板である、半導体デバイス。 - 請求項14に記載の半導体デバイスであって、
前記アルミニウム対アルミニウムのボールボンドと前記パラジウム対パラジウムのボンドとを覆う被覆を更に含む、半導体デバイス。 - 請求項14に記載の半導体デバイスであって、
前記被覆アルミニウムワイヤの被覆が銅を更に含む、半導体デバイス。 - 請求項14に記載の半導体デバイスであって、
前記パラジウム対パラジウムのボンドがスティッチボンドである、半導体デバイス。 - 請求項14に記載の半導体デバイスであって、
前記半導体ダイ上のボンドパッドが前記支持構造のボンドサイトより上にある、半導体デバイス。 - 請求項14に記載の半導体デバイスであって、
前記支持構造がリードフレームであり、前記ボンドサイトが前記リードフレームのリードである、半導体デバイス。
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JP2011103337A (ja) | 2009-11-10 | 2011-05-26 | Sony Corp | 半導体装置及びその製造方法 |
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JP2016004970A (ja) | 2014-06-19 | 2016-01-12 | 株式会社三井ハイテック | 銅ボンディングワイヤの接合方法 |
JP2017005037A (ja) | 2015-06-08 | 2017-01-05 | 三菱電機株式会社 | 電力用半導体装置 |
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