KR100359552B1 - 반도체 기판의 표면 평탄화 처리 방법 및 절연층에서의 전도성 플러그 생성 방법 - Google Patents
반도체 기판의 표면 평탄화 처리 방법 및 절연층에서의 전도성 플러그 생성 방법 Download PDFInfo
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- KR100359552B1 KR100359552B1 KR1019990038259A KR19990038259A KR100359552B1 KR 100359552 B1 KR100359552 B1 KR 100359552B1 KR 1019990038259 A KR1019990038259 A KR 1019990038259A KR 19990038259 A KR19990038259 A KR 19990038259A KR 100359552 B1 KR100359552 B1 KR 100359552B1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/7684—Smoothing; Planarisation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/32115—Planarisation
- H01L21/3212—Planarisation by chemical mechanical polishing [CMP]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Abstract
Description
Claims (27)
- 반도체 기판의 표면 평탄화 처리 방법에 있어서,① 상기 반도체 기판의 표면상의 돌출 영역(raised region)과 상기 반도체 기판의 표면내의 적어도 하나의 리세스(recess)를 패터닝(patterning)하는 단계와,② 상기 반도체 기판의 표면 상의 상기 적어도 하나의 돌출 영역 상에 라이너를 제공하는 단계와,③ 상기 라이너 및 돌출 영역상에 또한 상기 리세스내에 재료층을 형성하는 단계와,④ 상기 리세스내의 층은 남겨둔 채로, 상기 재료층이 상기 돌출 영역 모두로부터 실질적으로 제거될 때까지 상기 재료층을 화학 기계적 평탄화(chemical mechanical planarizing)하고, 상기 화학 기계적인 평탄화를 상기 라이너 내에서 중지하는 단계 -상기 라이너는 화학 기계적인 평탄화와 연관된 결함을 포함함- 와,⑤ 상기 연마된 기판의 표면에 대해 반응성 이온 에칭(reactive ion etching)을 행하고 라이너를 제거하여 처리를 완료하는 단계를 포함하는 반도체 기판의 표면 평탄화 처리 방법.
- 제 1 항에 있어서,상기 반응성 이온 에칭은 선택적이며, 상기 리세스내에 있는 상기 재료층의 높이를 상기 돌출 영역에 대해 제어하는 반도체 기판의 표면 평탄화 처리 방법.
- 삭제
- 제 1 항에 있어서,상기 라이너는 비교적 경질의 재료이며, 상기 비교적 경질인 재료는 상기 화학 기계적 연마 단계에 의해 최소로 손상되는 것으로서 비교적 연질 반도체 기판을 보호하는 것인 반도체 기판의 표면 평탄화 처리 방법.
- 삭제
- 제 1 항에 있어서,상기 재료는 도체인 반도체 기판의 표면 평탄화 처리 방법.
- 삭제
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- 산화물층으로 덮인 웨이퍼를 포함하는 반도체 기판의 표면 평탄화 처리 방법에 있어서,① 상기 산화물의 표면상의 돌출 영역과 상기 산화물의 표면내의 적어도 하나의 리세스를 패터닝하는 단계와,② 상기 산화물층 표면상의 적어도 상기 돌출 영역 위에 라이너를 제공하는 단계와,③ 상기 돌출 영역상의 상기 라이너 위와 상기 리세스내에 전도성층을 형성하는 단계와,④ 상기 전도성층을 화학 기계적으로 평탄화하는 단계와,⑤ 상기 라이너에서 상기 화학 기계적 평탄화 단계를 중단시켜, 상기 라이너가 상기 화학 기계적 평탄화 단계와 관련된 모든 결함을 실질적으로 포함하게 하고 상기 전도성층이 상기 리세스내에 유지되게 하는 단계와,⑥ 상기 연마된 기판의 표면을 반응성 이온 에칭하여, 상기 라이너를 우선적으로 제거해서 상기 반도체 기판의 표면이 실질적으로 결함이 없는 상태로 남겨 지게 함으로써 처리를 완료하는 단계를 포함하는 반도체 기판의 표면 평탄화 처리 방법.
- 제 10 항에 있어서,상기 반응성 이온 에칭 단계는 상기 리세스내에 있는 상기 전도성층의 높이를 상기 돌출 영역에 대해 제어하는 반도체 기판의 표면 평탄화 처리 방법.
- 삭제
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- 표면을 갖는 절연층에서의 전도성 플러그 생성 방법에 있어서,① 상기 절연층의 일부를 제거하여 상기 절연층 내에 접점 홀(contact hole)을 형성하는 단계와,② 상기 절연층의 표면상에 연마 중단부(polish stop)를 제공하는 단계와,③ 상기 절연층에 전도성 재료층을 도포하여, 상기 연마 중단부를 덮고 상기 접점 홀을 상기 전도성 재료로 채우는 단계와,④ 연마 재료(abrasive material) 및 에칭제(etchant)를 포함하는 슬러리(slurry)로 화학 기계적 평탄화 처리를 행하여 상기 절연층의 표면으로부터 상기 전도성 재료 모두를 실질적으로 제거하는 단계와,⑤ 상기 연마 중단부 내에서 상기 화학 기계적 평탄화 단계를 중단하여, 상기 접점 홀이 상기 전도성 재료로 충진된 채로 남게 해서 상기 전도성 플러그를 형성하는 단계와,⑥ 반응성 이온 에칭을 행하여, 상기 연마 중단부를 제거하고 상기 절연층의 표면이 결함이 없는 상태로 남게 하며 상기 절연층의 표면을 실질적으로 평면화하여 처리를 종결하는 단계를 포함하는 절연층에서의 전도성 플러그 생성 방법.
- 삭제
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- 제 16 항에 있어서,상기 반응성 이온 에칭 단계 ⑥은 선택적인 것으로서, 상기 절연층의 표면이 상기 전도성 플러그의 상단 표면보다 낮을 때까지 계속되어 상기 전도성 플러그가 상기 절연층의 표면으로부터 돌출되게 하는 절연층에서의 전도성 플러그 생성 방법.
- 삭제
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- 제 16 항에 있어서,상기 전도성 재료층을 도포하는 단계 ③ 전에, 상기 연마 중단부 위 및 상기 접점 홀 내에 라이너 및 시드층(seed layer) 중의 적어도 하나를 제공하는 단계를 더 포함하는 절연층에서의 전도성 플러그 생성 방법.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9/159,699 | 1998-09-24 | ||
| US09/159,699 | 1998-09-24 | ||
| US09/159,699 US6221775B1 (en) | 1998-09-24 | 1998-09-24 | Combined chemical mechanical polishing and reactive ion etching process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20000023003A KR20000023003A (ko) | 2000-04-25 |
| KR100359552B1 true KR100359552B1 (ko) | 2002-11-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019990038259A Expired - Fee Related KR100359552B1 (ko) | 1998-09-24 | 1999-09-09 | 반도체 기판의 표면 평탄화 처리 방법 및 절연층에서의 전도성 플러그 생성 방법 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US6221775B1 (ko) |
| KR (1) | KR100359552B1 (ko) |
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-
1998
- 1998-09-24 US US09/159,699 patent/US6221775B1/en not_active Expired - Fee Related
-
1999
- 1999-09-09 KR KR1019990038259A patent/KR100359552B1/ko not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000023003A (ko) | 2000-04-25 |
| US6221775B1 (en) | 2001-04-24 |
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