JP7252221B2 - 微小電気機械コンポーネントおよびその製造方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 32
- 229910052710 silicon Inorganic materials 0.000 claims description 32
- 239000010703 silicon Substances 0.000 claims description 32
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 31
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 29
- 239000012212 insulator Substances 0.000 claims description 26
- 230000004888 barrier function Effects 0.000 claims description 24
- 229910052732 germanium Inorganic materials 0.000 claims description 22
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 22
- 235000012239 silicon dioxide Nutrition 0.000 claims description 22
- 239000000377 silicon dioxide Substances 0.000 claims description 22
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 21
- 238000005530 etching Methods 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 10
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 7
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 6
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 claims description 5
- 238000000231 atomic layer deposition Methods 0.000 claims description 5
- 238000004544 sputter deposition Methods 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 130
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- 238000001020 plasma etching Methods 0.000 description 6
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- 238000005229 chemical vapour deposition Methods 0.000 description 4
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- 230000015572 biosynthetic process Effects 0.000 description 2
- -1 especially aSiB Chemical compound 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910010038 TiAl Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
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- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
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- 230000002265 prevention Effects 0.000 description 1
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- G—PHYSICS
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- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
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Description
Claims (11)
- 少なくとも1つの微小電気機械エレメント(5)と、電気コンタクトエレメント(3)と、絶縁層(2.2)と、およびその上に二酸化ケイ素で形成される犠牲層(2.1)とが、CMOS回路基板(1)の表面上に形成され、前記微小電気機械エレメント(5)は少なくとも1つの自由度で自由に可動に配置され、局所的に規定された方法で除去された前記犠牲層(2.1)により、前記少なくとも1つの微小電気機械エレメント(5)は可動であり、
微小電気機械コンポーネントの外縁で、前記CMOS回路のすべてのエレメントの周囲に半径方向(radially)に延在し、フッ化水素酸に耐性があり、シリコン、ゲルマニウム、または、酸化アルミニウムで形成された気密および/または液密のクローズド層(closed layer)(4)が前記CMOS回路基板(1)の表面に形成されていることを特徴とする、微小電気機械コンポーネント。 - 前記クローズド層(4)がアモルファスシリコン(amorphous silicon)で形成されることを特徴とする、請求項1に記載の微小電気機械コンポーネント。
- 前記クローズド層(4)が、ドープされたアモルファスシリコン(doped amorphous silicon)、特にホウ素またはゲルマニウムがドープされたアモルファスシリコン(boron or germanium doped amorphous silicon)、またはシリコンとゲルマニウムの化合物(chemical compound of silicon and germanium)で形成されることを特徴とする、請求項1または2に記載の微小電気機械コンポーネント。
- 前記微小電気機械エレメント(5)が可動に配置される前記微小電気機械コンポーネントの表面に、酸化アルミニウム(aluminium oxide)からなるバリア層(7)が形成されることを特徴とする、請求項1~3の何れか一項に記載の微小電気機械コンポーネント。
- 前記クローズド層(4)が少なくとも1つのさらなる層でオーバーコートされ、前記少なくとも1つのさらなる層は、好ましくは金属、特に好ましくはチタン、アルミニウム、アルミニウム-銅合金(aluminium-copper alloy)またはチタン-アルミニウム合金(titanium-aluminium alloy)または窒化チタン(titanium nitride)で形成されることを特徴とする、請求項1~4の何れか一項に記載の微小電気機械コンポーネント。
- 請求項1~5の何れか一項に記載の微小電気機械コンポーネントを製造する方法であって、
二酸化ケイ素を含む絶縁体層(2.2)がCMOS回路基板(1)の表面にアプライされ、そのプロセスで電気コンタクトエレメント(3)が局所的に規定された方法で前記絶縁体層(2.2)に埋め込まれ、
外縁の前記絶縁体層(2.2)には、前記CMOS回路基板(1)の表面まで延びる少なくとも1つのトレンチ(6)が、前記CMOS回路のすべてのエレメントの周囲に半径方向に延びるように形成され、
前記トレンチ(6)は、少なくともその底部領域において、シリコン(silicon)、ゲルマニウム(germanium)、シリコンとゲルマニウムの化合物(chemical compound of silicon and germanium)または酸化アルミニウム(aluminium oxide)で形成されるクローズド層(4)で満たされ、
続いて、二酸化ケイ素で形成される犠牲層(2.1)をアプライし、その上に少なくとも1つの微小機械エレメント(5)が形成される材料を形成し、
次いで、エッチング法により、前記犠牲層(2.1)は、フッ化水素酸を使用して局所的に規定された方法で除去され、その結果、前記少なくとも1つの微小電気機械エレメント(5)が可動になる、製造方法。 - 前記トレンチ(6)が、ほぼ完全に、好ましくは完全に、シリコン、ゲルマニウムまたは酸化アルミニウムで充填されることを特徴とする、請求項6に記載の製造方法。
- 前記クローズド層(4)が、前記トレンチ内(6)において、好ましくは金属、特に好ましくはチタン、チタン-アルミニウム合金(titanium-aluminium alloy)またはアルミニウム-銅合金(aluminium-copper alloy)または窒化チタン(titanium nitride)で形成される少なくとも1つのさらなる層で覆われることを特徴とする、請求項6に記載の製造方法。
- 前記犠牲層(2)において、酸化アルミニウム(aluminium oxide)からなるクローズドバリア層(closed barrier layer)(7)と、前記少なくとも1つの微小電気機械エレメント(5)の方向に面する前記バリア層(7)の表面上に前記微小電気機械エレメント(5)の作動に必要なさらなる電気コンタクトエレメント(3)および/または電極(13)とが形成され、これらが前記バリア層(7)の下に配置された電気コンタクトエレメント(3)に導電的に接続されており、
その後、前記バリア層(7)の上の犠牲層(2.1)の材料をエッチングにより除去し、その結果、前記微小電気機械エレメント(5)が可動になる、請求項6乃至8の何れか一項に記載の製造方法。 - 前記犠牲層(2.1)が形成される材料の局所的に規定された除去のために、液体または気体のフッ化水素酸がエッチングプロセスのために使用されることを特徴とする、請求項6乃至9の何れか一項に記載の製造方法。
- シリコンまたは酸化アルミニウムが、PE-CVD技術、スパッタリングまたはALDによって前記トレンチ(6)に堆積され、前記クローズド層(4)がそれとともに形成されることを特徴とする、請求項6乃至10の何れか一項に記載の製造方法。
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CN111527043B (zh) | 2024-07-26 |
EP3700855A1 (de) | 2020-09-02 |
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DE102017218883A1 (de) | 2019-04-25 |
TWI756481B (zh) | 2022-03-01 |
KR20200100620A (ko) | 2020-08-26 |
US20200239303A1 (en) | 2020-07-30 |
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US11148940B2 (en) | 2021-10-19 |
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