KR100801455B1 - Mram에서 사용하기 위한 자속 집중층을 제조하는 방법 - Google Patents
Mram에서 사용하기 위한 자속 집중층을 제조하는 방법 Download PDFInfo
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- KR100801455B1 KR100801455B1 KR1020027012470A KR20027012470A KR100801455B1 KR 100801455 B1 KR100801455 B1 KR 100801455B1 KR 1020027012470 A KR1020027012470 A KR 1020027012470A KR 20027012470 A KR20027012470 A KR 20027012470A KR 100801455 B1 KR100801455 B1 KR 100801455B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
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- G—PHYSICS
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- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements
- G11C11/15—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements using multiple magnetic layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B61/00—Magnetic memory devices, e.g. magnetoresistive RAM [MRAM] devices
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Abstract
Description
그러므로, 본 발명의 목적은, 자속 집중 재료들을 포함하는 MRAM들을 제조하는 새로운 그리고 개선된 방법을 제공하는 것이다.
본 발명의 다른 목적은, 표준 상감 세공 프로세싱 장비를 이용하여, 자기 메모리 비트의 바로 밑에 형성된 디지트선의 제조뿐만 아니라 자기 메모리 비트의 상부 상에 비트선을 피복하기 위한 기술을 포함하는, 자속 집중 재료들을 포함하는 MRAM들을 제조하는 새로운 그리고 개선된 방법을 제공하는 것이다.
본 발명의 또 다른 목적은, 자기 비트의 바로 밑에 형성된 디지트선들에 대해, 상기 비트를 향하여 위쪽으로, 그리고 자기 비트의 상부 상에 형성된 비트선들에 대해, 상기 비트를 향하여 아래쪽으로 자속을 집중시키는 장벽층들을 갖는 피복된 선들을 형성하기 위한 개선된 구조들을 갖는 자속 집중 재료들을 포함하는 MRAM들을 제조하는 새로운 그리고 개선된 방법을 제공하는 것이다.
Claims (9)
- 자기 메모리 장치들에서 사용하기 위한 자속 집중기(flux concentrator)를 제조하는 방법에 있어서,제 1 장벽층, 자속 집중층(flux concentrating layer), 제 2 장벽층 및 구리(Cu) 도전선(copper conducting line)을 포함하는 피복된 디지트선(cladded digit line)을 형성하는 단계;상기 피복된 디지트선의 최상위 표면 상에 유전층을 침착(deposit)하는 단계;상기 유전층 상에 적어도 하나의 자기 메모리 비트를 제공하는 단계; 및구리(Cu) 도전선, 제 1 외부 장벽층, 자속 집중층 및 제 2 외부 장벽층을 포함하는 피복된 비트선을 형성하는 단계를 포함하는, 자속 집중기 제조 방법.
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- 자기 메모리 장치들에서 사용하기 위한 자속 집중기를 제조하는 방법에 있어서,적어도 하나의 자기 메모리 비트를 제공하는 단계;상기 적어도 하나의 자기 메모리 비트 인접하여 하부 유전층 및 상부 유전층을 침착하는 단계;상기 상부 유전층 및 상기 하부 유전층 내에 적어도 하나의 트렌치(trench)를 형성하는 단계;상기 적어도 하나의 트렌치 내에 제 1 장벽층을 침착하는 단계;상기 제 1 장벽층의 표면 상에 자속 집중층을 포함하는 금속 시스템을 침착하는 단계; 및구리(Cu) 다마신 비트선(copper damascene bit line)을 규정하기 위해 상기 금속 시스템을 패터닝하는 단계를 포함하는, 자속 집중기 제조 방법.
- 자기 메모리 장치들에서 사용하기 위한 자속 집중기를 제조하는 방법에 있어서,유전 재료를 제공하는 단계;상기 유전 재료의 일부 내에 제 1 장벽층, 자속 집중층, 제 2 장벽층 및 구리(Cu) 도전선을 포함하는 피복된 디지트선을 형성하는 단계;상기 피복된 디지트선의 최상부 표면 상에 유전층을 침착하는 단계;상기 유전층 상에 적어도 하나의 자기 메모리 비트를 제공하는 단계; 및제 1 외부 장벽층, 자속 집중층, 제 2 외부 장벽층 및 구리(Cu)선을 포함하는 피복된 비트선을 형성하는 단계를 포함하며,상기 피복된 비트선을 형성하는 단계는,상기 자기 메모리 비트의 상부 표면 상에 하부 유전층 및 상부 유전층을 침착하는 단계로서, 상기 하부 유전층은 절연 재료로 형성되고, 상기 상부 유전층은 절연 재료로 형성되는, 상기 하부 유전층 및 상부 유전층을 침착하는 단계;다마신 비트선의 형성을 위한 트렌치를 형성하기 위해 상기 하부 유전층 쪽으로 상기 상부 유전층 내에서 적어도 하나의 트렌치를 에칭하는 단계;상기 자기 메모리 비트와 물리적인 접촉을 만들기 위해 상기 자기 메모리 비트 쪽으로 상기 하부 유전층 내에서 적어도 하나의 비아를 형성하는 단계;상기 자기 메모리 비트 쪽으로, 상기 적어도 하나의 트렌치 및 상기 적어도 하나의 비아 내에 제 1 장벽층을 침착하는 단계;상기 제 1 장벽층의 표면상에 구리 시스템을 침착하는 단계로서, 상기 적어도 하나의 트렌치 및 비아 내에 구리(Cu) 시드(seed) 재료를 침착하는 단계, 상기 구리(Cu) 시드 재료의 표면 상에 도금된 구리(Cu) 재료를 침착하는 단계, 및 상기 도금된 구리(Cu)를 버핑(buffing)하고 연마하는 단계, 상기 구리 시스템의 상부 유전체를 제거하는 단계, 상기 도금된 구리(Cu)의 표면상에 상기 제 1 외부 장벽층, 상기 자속 집중층 및 상기 제 2 외부 장벽층을 침착하는 단계를 포함하는, 상기 구리 시스템을 침착하는 단계; 및구리(Cu) 다마신 비트선을 규정하기 위해 상기 구리 시스템을 패터닝하는 단계를 포함하는, 자속 집중기 제조 방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/528,971 US6211090B1 (en) | 2000-03-21 | 2000-03-21 | Method of fabricating flux concentrating layer for use with magnetoresistive random access memories |
US09/528,971 | 2000-03-21 | ||
PCT/US2001/008981 WO2001071777A2 (en) | 2000-03-21 | 2001-03-21 | Method of fabricating flux concentrating layer for use with magnetoresistive random access memories |
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KR20030014372A KR20030014372A (ko) | 2003-02-17 |
KR100801455B1 true KR100801455B1 (ko) | 2008-02-11 |
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KR1020027012470A KR100801455B1 (ko) | 2000-03-21 | 2001-03-21 | Mram에서 사용하기 위한 자속 집중층을 제조하는 방법 |
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US (1) | US6211090B1 (ko) |
EP (1) | EP1284010A2 (ko) |
JP (1) | JP2003528458A (ko) |
KR (1) | KR100801455B1 (ko) |
AU (1) | AU2001247628A1 (ko) |
TW (1) | TW492156B (ko) |
WO (1) | WO2001071777A2 (ko) |
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WO2001071777A2 (en) | 2001-09-27 |
JP2003528458A (ja) | 2003-09-24 |
US6211090B1 (en) | 2001-04-03 |
WO2001071777A3 (en) | 2002-11-07 |
KR20030014372A (ko) | 2003-02-17 |
EP1284010A2 (en) | 2003-02-19 |
TW492156B (en) | 2002-06-21 |
AU2001247628A1 (en) | 2001-10-03 |
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