JP2021147305A - 窒化アルミニウムウェハの製造方法およびその窒化アルミニウムウェハ - Google Patents
窒化アルミニウムウェハの製造方法およびその窒化アルミニウムウェハ Download PDFInfo
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- JP2021147305A JP2021147305A JP2020118296A JP2020118296A JP2021147305A JP 2021147305 A JP2021147305 A JP 2021147305A JP 2020118296 A JP2020118296 A JP 2020118296A JP 2020118296 A JP2020118296 A JP 2020118296A JP 2021147305 A JP2021147305 A JP 2021147305A
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- Prior art keywords
- aluminum nitride
- nitride wafer
- wafer
- atm
- pressure
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Images
Classifications
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/53—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
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- H—ELECTRICITY
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Abstract
Description
2 ノッチ
3 エッジ
4 オリエンテーションフラット
6 エッジ研削用のグラインダー砥石
7 ノッチ研削用のグラインダー砥石
Claims (10)
- 窒化アルミニウムウェハの製造方法であって、
ステップ(a):高温処理により窒化アルミニウムグリーン体ブロックを窒化アルミニウムウェハブロックに加工するステップと、
ステップ(b):前記窒化アルミニウムウェハブロックの外縁上に少なくとも1以上のノッチまたはオリエンテーションフラットを形成し、前記窒化アルミニウムウェハブロックを複数の窒化アルミニウムウェハ材にスライスするステップと、
ステップ(c):前記窒化アルミニウムウェハ材それぞれに対し研削と研磨を行うステップと、
を含むことを特徴とする窒化アルミニウムウェハの製造方法。 - 前記窒化アルミニウムグリーン体ブロックは、モールド内に窒化アルミニウムグリーン体を設置し、機械または油圧成型した後、水圧、油圧または気圧で均圧処理することで得られ、
前記機械または油圧成型は、圧力トン数が98066.50N〜9806650.00Nで、前記モールド内の圧力が−0.063atm〜100atmで行い、前記水圧、油圧または気圧で行う均圧処理は100atm〜8000atmの圧力と、10℃〜100℃の温度で行うことを特徴とする請求項1に記載の窒化アルミニウムウェハの製造方法。 - 窒化アルミニウムウェハの製造方法であって、
ステップ(a):前記窒化アルミニウムグリーン体をドクターブレードでシート化するか、前記窒化アルミニウムグリーン体をドクターブレードで窒化アルミニウムグリーンロールを形成し裁断することで得られる窒化アルミニウムグリーンシートを用意するステップと、
ステップ(b):前記窒化アルミニウムグリーンシートを高温処理し窒化アルミニウムウェハ材にするステップと、
ステップ(c):前記窒化アルミニウムウェハ材の外縁上に少なくとも1以上のノッチまたはオリエンテーションフラットを形成し、前記窒化アルミニウムウェハ材に対し研削と研磨を行うステップと、
を含むことを特徴とする窒化アルミニウムウェハの製造方法。 - 前記高温処理は、脱脂工程と、焼結工程と、を含み、
このうち、前記脱脂工程は、200℃〜900℃かつ水素、窒素、酸素、アルゴンまたは空気がある環境下で行い、
前記焼結工程は、1000℃〜3000℃かつ真空、常圧または高圧かつ水素、窒素、アルゴンがある環境下で行うことを特徴とする請求項1または3に記載の窒化アルミニウムウェハの製造方法。 - 前記窒化アルミニウムグリーン体は、窒化アルミニウム顆粒を含み、
このうち、前記窒化アルミニウム顆粒は、酸化アルミニウムまたは純アルミニウムの少なくとも一方の粉末と、窒素、炭素、水素原子を含む有機接着剤と混合した後、水素、窒素、炭素原子を含むガス環境下で高温炭素熱還元反応を行い、窒素、酸素または大気を含むガス雰囲気環境下で高温脱炭後に造粒することで得られることを特徴とする請求項2または3に記載の窒化アルミニウムウェハの製造方法。 - 前記高温炭素熱還元反応は、600℃〜3000℃の温度で行うことを特徴とする請求項5に記載の窒化アルミニウムウェハの製造方法。
- 前記ステップ(c)のうち、研削および研磨を行う前、または後に、前記窒化アルミニウムウェハ材の外縁にエッジを形成し、
前記エッジの形状は、直角型、半円形、非対称半円形、半楕円形、非対称半楕円形、対称な台形、非対称な台形、対称な半円形と台形の組み合わせまたは非対称な半円形と台形の組み合わせを含むことを特徴とする請求項1または3に記載の窒化アルミニウムウェハの製造方法。 - 前記ノッチの形状は、V形状であり、前記V形状の底、左右及び上部はR面取りされていることを特徴とする請求項1または3に記載の窒化アルミニウムウェハの製造方法。
- 前記オリエンテーションフラットは、レーザー、ウォーターカッターまたは機械加工により形成されることを特徴とする請求項1または3に記載の窒化アルミニウムウェハの製造方法。
- 請求項1から9のいずれかの製造方法により製造される前記窒化アルミニウムウェハであって、前記窒化アルミニウムウェハの外縁は少なくとも1以上のノッチまたはオリエンテーションフラットを有することを特徴とする窒化アルミニウムウェハ。
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US20210287996A1 (en) | 2021-09-16 |
JP7402538B2 (ja) | 2023-12-21 |
CN113385987A (zh) | 2021-09-14 |
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JP7335617B2 (ja) | 2023-08-30 |
KR102455667B1 (ko) | 2022-10-17 |
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