KR940004779A - 트렌치 기술을 이용한 반도체 장치의 소자분리영역 형성방법 - Google Patents

트렌치 기술을 이용한 반도체 장치의 소자분리영역 형성방법 Download PDF

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KR940004779A
KR940004779A KR1019920015697A KR920015697A KR940004779A KR 940004779 A KR940004779 A KR 940004779A KR 1019920015697 A KR1019920015697 A KR 1019920015697A KR 920015697 A KR920015697 A KR 920015697A KR 940004779 A KR940004779 A KR 940004779A
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South Korea
Prior art keywords
teos
photoresist
polysilicon layer
nitride film
silicon nitride
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KR1019920015697A
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KR950009889B1 (ko
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전용주
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김주용
현대전자산업 주식회사
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Priority to JP5216268A priority patent/JPH06177236A/ja
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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W10/00Isolation regions in semiconductor bodies between components of integrated devices
    • H10W10/01Manufacture or treatment
    • H10W10/011Manufacture or treatment of isolation regions comprising dielectric materials
    • H10W10/014Manufacture or treatment of isolation regions comprising dielectric materials using trench refilling with dielectric materials, e.g. shallow trench isolations
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10PGENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P14/00Formation of materials, e.g. in the shape of layers or pillars
    • H10P14/60Formation of materials, e.g. in the shape of layers or pillars of insulating materials
    • H10P14/69Inorganic materials
    • H10P14/692Inorganic materials composed of oxides, glassy oxides or oxide-based glasses
    • H10P14/6921Inorganic materials composed of oxides, glassy oxides or oxide-based glasses containing silicon
    • H10P14/69215Inorganic materials composed of oxides, glassy oxides or oxide-based glasses containing silicon the material being a silicon oxide, e.g. SiO2
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10PGENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P14/00Formation of materials, e.g. in the shape of layers or pillars
    • H10P14/60Formation of materials, e.g. in the shape of layers or pillars of insulating materials
    • H10P14/69Inorganic materials
    • H10P14/694Inorganic materials composed of nitrides
    • H10P14/6943Inorganic materials composed of nitrides containing silicon
    • H10P14/69433Inorganic materials composed of nitrides containing silicon the material being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10PGENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P50/00Etching of wafers, substrates or parts of devices
    • H10P50/69Etching of wafers, substrates or parts of devices using masks for semiconductor materials
    • H10P50/691Etching of wafers, substrates or parts of devices using masks for semiconductor materials for Group V materials or Group III-V materials
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10PGENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P50/00Etching of wafers, substrates or parts of devices
    • H10P50/73Etching of wafers, substrates or parts of devices using masks for insulating materials
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10PGENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P76/00Manufacture or treatment of masks on semiconductor bodies, e.g. by lithography or photolithography
    • H10P76/20Manufacture or treatment of masks on semiconductor bodies, e.g. by lithography or photolithography of masks comprising organic materials
    • H10P76/204Manufacture or treatment of masks on semiconductor bodies, e.g. by lithography or photolithography of masks comprising organic materials of organic photoresist masks

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Abstract

본 발명은 트렌치 기술을 이용한 반도체 장치의 소자분리영역 형성방법에 관한 것으로, 실리콘 기판에 다수의 소자분리 영역을 형성하기 위하여 다수의 트렌치를 형성한 다음 소자분리영역에서 절연물질로 작용할 TEOS를 형성하는데, 셀 지역의 TEOS 높이가 주변지역보다 높다는 점을 이용하여 주변지역에 종래와 같이 마스크를 쓰지 않고 TEOS상에 식각장벽층을 형성하여 셀 지역만 에치 백하여 셀 지역과 주변지역을 동시에 평탄화하는 기술에 관한 것이다.

Description

트렌치 기술을 이용한 반도체 장치의 소자분리영역 형성방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1A도 내지 제1I도는 본 발명에 의한 소자분리영역을 형성하는 단계를 나타낸 단면도.

Claims (2)

  1. 트렌치 기술을 이용한 반도체 장치의 소자분리영역 형성방법에 있어서, 실리콘 기판(1) 상에 제1실리콘 산화막(2) 및 실리콘 질화막(3)을 형성한 후, 상기 실리콘 질화막(3) 상부에 제1포토레지스트(4)를 도포한 다음, 마스크 작업을 통해 제1포토레지스터 패턴(4′)을 형성하는 단계와, 상기 제1포토레지스트 패턴(4′)을 마스크로 하여 건식식각방식으로 실리콘 질화막(3)과 제1실리콘 산화막(2)을 식각하여 실리콘 질화막 패턴(3′)과 제1실리콘 산화막 패턴(2′)을 형성한 후, 상기 제1포토레지스트 패턴(4′), 실리콘 질화막 패턴(3′) 및 제1실리콘 산화막 패턴(2′)을 마스크로 하여 방향성 식각방식으로 실리콘 기판(1)에 일정깊이의 다수의 트렌치(5a, 5b, 5c) 내부 표면에 제2실리콘 산화막(6)을 얇게 형성하는 단계와, 상기 단계의 구조 상부에 전반적으로 TEOS(7)를 예정된 두께로 형성한 후, 상기 TEO5(7) 상부에 식각 장벽층으로서 폴리실리콘층(8)을 증착하는 단계와, 상기 폴리실리콘층(8) 상부에 제2포토레지스트(9)를 평탄하게 도포하는 단계와, 상기 제2포토레지스트(9)를 RIE방식으로 에치 백하여 TEOS(7)의 높이가 높은 셀 지역(B)의 폴리 실리콘층(8b)이 먼저 노출되면서 식각 장벽층으로 작용하여 그 하부의 TEOS(7)를 보호하고, 계속 에치 백 공정을 실시하여 주변지역(A)의 폴리실리콘층(8a) 위의 제2포토레지스트(9)가 예정된 두께로 남아 있도록 에치 백 공정을 실시하는 단계와, 상기 노출된 폴리실리콘층(8b)을 건식 또는 습식식각방식으로 제거한 후, 상기 남아있는 제2포토레지스트(9)를 제거하여 주변지역(A)의 폴리실 리콘층(8a)을 노출시키는 단계와, 상기 폴리실리콘층(8a)을 마스크로 하여 셀 지역(B)의 TEOS(7)를 에치 백하여 트렌치 마스크층인 실리콘 질화막 패턴(3′) 상부면이 노출될 때까지 에치백 공정을 실시하는 단계와, 상기 폴리실리콘층(8a)을 건식 식각방식으로 제거한 후, 실리콘 질화막 패턴(3′)과 실리콘 산화막 패턴(2′)을 식각한 다음, 남아있는 TEOS(7)를 실리콘 기판(1) 상부면과 평탄하게 되도록 식각하여 트렌치(5a, 5b, 5c) 내부에 TEOS(7)로 채워진 다수의 소자분리 영역(10a, 10b, 10c)을 형성하는 단계로 이루어진 것을 특징으로 하는 트렌치 기술을 이용한 반도체 장치의 소자분리영역 형성방법.
  2. 제 1항에 있어서, 상기 TEOS(7)의 두께는 트렌치 마스크층인 실리콘 산화막 패턴(2′)과 실리콘 질화막 패턴(3′)과 같거나 높게 형성하는 것을 특징으로 하는 트렌치 기술을 이용한 반도체 장치의 소자분리영역 형성방법.
KR1019920015697A 1992-08-31 1992-08-31 트렌치 기술을 이용한 반도체 장치의 소자분리영역 형성방법 Expired - Fee Related KR950009889B1 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019920015697A KR950009889B1 (ko) 1992-08-31 1992-08-31 트렌치 기술을 이용한 반도체 장치의 소자분리영역 형성방법
JP5216268A JPH06177236A (ja) 1992-08-31 1993-08-31 トレンチ構造の素子分離膜の製造方法

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Application Number Priority Date Filing Date Title
KR1019920015697A KR950009889B1 (ko) 1992-08-31 1992-08-31 트렌치 기술을 이용한 반도체 장치의 소자분리영역 형성방법

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KR940004779A true KR940004779A (ko) 1994-03-16
KR950009889B1 KR950009889B1 (ko) 1995-09-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100318255B1 (ko) * 1998-06-30 2002-04-22 박종섭 반도체장치의소자분리방법
KR100389911B1 (ko) * 1996-09-13 2003-09-19 삼성전자주식회사 트렌치 소자 분리 방법

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3983324B2 (ja) 1997-01-09 2007-09-26 富士重工業株式会社 車両の走行レーン逸脱防止装置
JP4230124B2 (ja) 2001-04-20 2009-02-25 富士重工業株式会社 車両運動制御装置
JP2002316633A (ja) 2001-04-20 2002-10-29 Fuji Heavy Ind Ltd 車両運動制御装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59217339A (ja) * 1983-05-26 1984-12-07 Toshiba Corp 半導体装置の製造方法
US4836885A (en) * 1988-05-03 1989-06-06 International Business Machines Corporation Planarization process for wide trench isolation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100389911B1 (ko) * 1996-09-13 2003-09-19 삼성전자주식회사 트렌치 소자 분리 방법
KR100318255B1 (ko) * 1998-06-30 2002-04-22 박종섭 반도체장치의소자분리방법

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KR950009889B1 (ko) 1995-09-01
JPH06177236A (ja) 1994-06-24

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