JP4692314B2 - 半導体デバイスの製造方法 - Google Patents
半導体デバイスの製造方法 Download PDFInfo
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- JP4692314B2 JP4692314B2 JP2006037134A JP2006037134A JP4692314B2 JP 4692314 B2 JP4692314 B2 JP 4692314B2 JP 2006037134 A JP2006037134 A JP 2006037134A JP 2006037134 A JP2006037134 A JP 2006037134A JP 4692314 B2 JP4692314 B2 JP 4692314B2
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- resin layer
- oxide film
- electrode pad
- semiconductor device
- plasma
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- 239000004065 semiconductor Substances 0.000 title claims description 79
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000011347 resin Substances 0.000 claims description 74
- 229920005989 resin Polymers 0.000 claims description 74
- 239000007789 gas Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 97
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 20
- 125000004430 oxygen atom Chemical group O* 0.000 description 11
- 125000001153 fluoro group Chemical group F* 0.000 description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 125000004429 atom Chemical group 0.000 description 5
- UMIVXZPTRXBADB-UHFFFAOYSA-N benzocyclobutene Chemical compound C1=CC=C2CCC2=C1 UMIVXZPTRXBADB-UHFFFAOYSA-N 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 238000005253 cladding Methods 0.000 description 5
- 239000010931 gold Substances 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 5
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 150000002222 fluorine compounds Chemical class 0.000 description 3
- 238000009832 plasma treatment Methods 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- -1 SiO 2 Chemical compound 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- KIDDROYEHJYRSO-UHFFFAOYSA-N C(=C)C1(C(C=2C1=CC=CC=2)[SiH2]OC1(C(C=2C1=C(C=CC=2)C)(C)C)C)C=C Chemical compound C(=C)C1(C(C=2C1=CC=CC=2)[SiH2]OC1(C(C=2C1=C(C=CC=2)C)(C)C)C)C=C KIDDROYEHJYRSO-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Description
図1は、第1実施形態に係る半導体デバイスを模式的に示す平面図である。図2は、図1に示されるII−II線に沿った断面図である。図1及び図2に示される半導体デバイス10は、半導体素子2と、半導体素子2上に設けられシリコン原子(Si)を含む樹脂層4と、樹脂層4上に設けられシリコン原子を含む酸化膜6と、酸化膜6上に設けられ金属を含む電極パッド8とを備える。樹脂層4と酸化膜6と電極パッド8とは、互いに密着して設けられている。
図3(a)に示されるように、半導体素子2上にシリコン原子を含む樹脂層4aを形成する。好ましくは、半導体素子2上に絶縁層12aを形成した後に樹脂層4aを形成する。樹脂層4aは、例えばシリコン原子を含む樹脂を塗布することによって得られる。
続いて、酸化膜6aの表面6asを、図3(c)に示されるように、不活性ガスから生成された第2のプラズマP2によって処理することが好ましい。不活性ガスとしては、例えば窒素ガス、希ガス等が挙げられる。希ガスとしては、例えばHeガス、Neガス、Arガスが好ましい。一実施例において、不活性ガスは窒素ガスである。
続いて、図1、図2、図4(a)〜図4(c)に示されるように、酸化膜6上に金属からなる電極パッド8を形成する。電極パッド8は例えばリフトオフ法を用いて以下のように形成される。
図5は、第2実施形態に係る半導体デバイスを模式的に示す平面図である。図6は、図5に示されるVI−VI線に沿った断面図である。図5及び図6に示される半導体デバイス20は、主としてIII−V族化合物半導体から構成される半導体レーザ36と、半導体レーザ36上に設けられシリコン原子を含む樹脂層40と、樹脂層40上に設けられシリコン原子を含む酸化膜44と、酸化膜44上に設けられ金属を含む電極パッド46とを備える。樹脂層40と酸化膜44と電極パッド46とは、互いに密着して設けられている。樹脂層40、酸化膜44及び電極パッド46は、樹脂層4、酸化膜6及び電極パッド8とそれぞれ同様の材料から構成される。また、酸化膜44及び電極パッド46は、酸化膜6及び電極パッド8とそれぞれ同様の形状を有する。
Claims (4)
- 半導体素子上に設けられシリコン原子を含む樹脂層の表面を、O 2 ガスとCF 4 ガスから生成された第1のプラズマによって酸化及びエッチングすることにより、前記樹脂層の表面に、4〜50nmの厚みを有するシリコン酸化膜を形成する第1のプラズマ処理工程と、
前記シリコン酸化膜上に金属からなる電極パッドを形成する電極パッド形成工程とを含み、
前記第1のプラズマ処理工程において、前記第1のプラズマを生成するための前記O 2 ガスとCF 4 ガスとの混合ガス比が1:1〜2:1である、半導体デバイスの製造方法。 - 前記第1のプラズマ処理工程と電極パッド形成工程との間に、前記シリコン酸化膜の表面を、不活性ガスから生成された第2のプラズマによって処理する第2のプラズマ処理工程を更に含む、請求項1に記載の半導体デバイスの製造方法。
- 前記電極パッドがチタンからなる、請求項1又は2に記載の半導体デバイスの製造方法。
- 前記半導体素子が半導体光素子である、請求項1〜3のいずれか一項に記載の半導体デバイスの製造方法。
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