Abstract:
A method for manufacturing a semiconductor device is provided to simplify a manufacturing process for a contact plug of the semiconductor device and to reduce a manufacture cost by employing silicon carbide or silicon carbide oxide as a sacrificial dielectric. Lower structures(116) are formed on a semiconductor substrate(110). A sacrificial dielectric(126) is formed on the semiconductor substrate where the lower structures are formed. The sacrificial dielectric is patterned to form a contact hole that exposes a predetermined region of the semiconductor substrate. A contact plug(130) is formed to gap-fill the contact hole. The sacrificial dielectric is a compound including silicon and carbon. When the contact hole is formed, a mask pattern having an opening is formed in the sacrificial dielectric. The opening defines the contact hole. The sacrificial dielectric is patterned by using the mask pattern as an etch mask to form the contact hole. The mask pattern is selectively removed. The opening is formed in the sacrificial dielectric between the lower structures.
Abstract:
PURPOSE: A method for forming a fine pattern of a semiconductor device is provided to perform a low density pattern and a high density pattern on the same layer at the same time by progressing a pattern forming process at a high density pattern region and a pattern forming process at a low density pattern region. CONSTITUTION: A plurality of mold patterns(140a) is formed. A fine mask layer is formed on a first region and a second region on a substrate(100), and covers the mold pattern in the first region. A top hard mask pattern(160a) covers a part of the fine mask layer in the second region. The fine mask layer is etched in the first region and the second region after using the top hard mask pattern as an etching mask. A plurality of fine spacers(150a) composed of a first part of the fine mask layer is formed in the first region. A low density mask pattern(150b) composed of a second part of the fine mask layer is formed in the second region.
Abstract:
기판상의제1 층간절연막을관통하며측벽에스페이서가형성된게이트구조물을형성한다. 게이트구조물상에제1 하드마스크를형성한다. 제1 하드마스크를식각마스크로사용하여제1 층간절연막을부분적으로식각함으로써, 기판상면을노출시키는제1 콘택홀을형성한다. 제1 콘택홀에의해노출된기판상면에금속실리사이드패턴을형성한다. 금속실리사이드패턴과전기적으로연결되는플러그를형성한다. 스페이서및 제1 하드마스크에의해금속실리사이드패턴및 플러그가자기정렬방식으로형성될수 있다.
Abstract:
PURPOSE: A method for manufacturing a semiconductor device is provided to overcome alignment margin problems by forming a contact with self-aligned method by using a hard mask. CONSTITUTION: A first hard mask(153a) is formed on a gate structure. A spacer is formed at the side wall of the gate structure. A first contact hole(170a) is formed by partly etching a first inter layer dielectric by using the first hard mask as an etching mask. The first contact hole exposes the upper side of a substrate. A metal silicide pattern(159) is formed at the upper side of the substrate exposed by the first contact hole. A plug which is electrically connected with the metal silicide pattern is formed. A gate insulating layer is formed on the first inter layer dielectric and the spacer.
Abstract:
A method for forming a contact of a semiconductor device is provided to prevent throughput decrease and generation of short phenomenon between adjacent contacts by forming a contact hole having a second spacer on a preliminary contact hole. A conductive layer pattern(106) and a mask pattern(108) are laminated on a semiconductor substrate(100). A conductive structure including a first spacer(112) is formed sidewalls of the conductive layer pattern and the mask pattern. Silicon germanium covering the conductive structure is deposited on the semiconductor substrate to form a sacrificial layer. The sacrificial layer is partially etched to form a preliminary contact hole exposing the semiconductor substrate between the conductive structures. Thin films for a spacer are successively formed on the surfaces of the preliminary contact hole and the sacrificial layer. The thin film for spacer on the external sidewall of the preliminary contact hole is anisotropic-etched to form a contact hole(120) having a second spacer. A conductive material is gap-filled in the contact hole to form a contact. The sacrificial layer is then removed. An interlayer dielectric is formed on a part where the sacrificial layer is removed.
Abstract:
PURPOSE: An MIM(Metal-Insulator-Metal) capacitor and a manufacturing method thereof are provided to form a lower electrode made of metal on a conventional polysilicon contact plug without the increase of contact resistance and leakage current by improving the structure and composition of the lower electrode. CONSTITUTION: An interlayer dielectric(110) is formed on a semiconductor substrate(100). A contact plug(120) made of polysilicon is formed in the interlayer dielectric. A lower electrode(200) is formed on the contact plug via a transition metal silicide layer(170). The lower electrode includes a bottom portion(B) for contacting electrically the contact plug and a sidewall portion(A) prolonged vertically from the bottom portion. A main frame of the lower electrode is a first nitride containing transition metal film(180). A transition metal film(160) and a second nitride containing transition metal film(155) are added to the sidewall portion, so that the thickness of the sidewall portion is larger than that of the bottom portion.
Abstract:
포토리소그래피 공정에서의 해상 한계를 극복할 수 있는 미세 피치의 패턴을 구현하는 데 있어서, 동일한 기판상에 패턴 밀도 또는 패턴 폭이 서로 다른 다양한 크기 및 다양한 피치의 패턴들을 동시에 형성할 수 있는 반도체 소자의 미세 패턴 형성 방법을 제공한다. 기판상의 고밀도 패턴 영역에만 제1 피치로 반복 배치되는 복수의 몰드 패턴을 형성한다. 고밀도 패턴 영역 및 저밀도 패턴 영역에 상기 몰드 패턴을 덮는 미세 마스크층을 형성한다. 저밀도 패턴 영역에만 상기 미세 마스크층의 일부를 덮는 상부 하드마스크 패턴을 형성한다. 상부 하드마스크 패턴을 식각 마스크로 하여 고밀도 패턴 영역 및 저밀도 패턴 영역에서 미세 마스크층을 식각하여, 고밀도 패턴 영역에는 복수의 미세 스페이서를 형성하고, 저밀도 패턴 영역에는 저밀도 마스크 패턴을 형성한다. 스페이서, 패턴 밀도, 탄소 함유막, 하드마스크
Abstract:
콘택 저항 및 누설 전류의 증대없이 기존의 폴리실리콘 콘택 플러그를 사용하면서, 하부 전극을 금속막으로 형성하는 MIM 캐패시터 및 그 제조방법을 개시한다. 개시된 MIM 캐패시터는, 반도체 기판 상에 형성되는 층간 절연막과, 상기 층간 절연막의 소정 부분에 형성되는 폴리실리콘으로 된 콘택 플러그와, 상기 콘택 플러그와 전기적으로 연결되는 바닥부, 바닥부로부터 수직으로 연장되는 측벽부를 포함하는 실린더 형상의 하부 전극과, 상기 하부 전극의 바닥부와 콘택 플러그 사이에 개재되는 전이 금속 실리사이드막을 포함한다. 이때, 상기 측벽부 및 바닥부의 표면은 질소를 포함하는 전이 금속막으로 구성되고, 상기 측벽부의 두께가 바닥부의 두께보다 두껍게 형성된다. MIM, 폴리실리콘 콘택 플러그, 전이 금속막, TiN, 실리사이드