Abstract:
반도체 소자의 배선 방법 및 배선 구조체를 제공한다. 상기 반도체 소자의 배선방법은 반도체기판 상에 층간절연막을 형성하는 것을 구비하되, 상기 층간절연막은 탄소 도핑된 저유전율막으로 형성한다. 상기 층간절연막 상에 산화방지막을 형성한다. 상기 산화방지막 상에 산화물 캐핑층을 형성한다. 상기 산화물 캐핑층, 상기 산화방지막 및 상기 층간절연막을 관통하는 비아홀을 형성한다. 상기 비아홀 내에 도전막 패턴을 형성한다.
Abstract:
PURPOSE: A method for forming a semiconductor device having low permittivity interlayer dielectric is provided to exactly form a micro pattern on a SiOC layer and to restrain a parasitic capacitance between interconnections or contact plugs by using the SiOC layer having a low dielectric constant. CONSTITUTION: A low permittivity carbon oxide silicon layer made of SiOC is formed on a substrate(100) by a CVD(Chemical Vapour Deposition) using a nitrogen included gas as a source gas or a carrier gas. A plasma processing is performed on the carbon oxide silicon layer by supplying gases, such as a helium, a hydrogen, an N2O, or an Ar gas to a processing chamber. A photoresist is deposited and patterned on the plasma processed carbon oxide silicon layer(111).
Abstract:
본 발명은 배선의 기생 용량을 줄일 수 있는 반도체 장치 및 그 형성방법에 관한 것으로, 그 형성방법은 기판에 무기 실리콘 산화막과 저유전율 유기 실리콘 산화막을 차례로 적층하는 단계, 패터닝 과정을 통해 상기 유기 실리콘 산화막에 상기 유기 실리콘 산화막 두께의 일부를 깊이로 하는 부분 트렌치를 형성하는 단계, 상기 부분 트렌치 내벽면에 대한 산소 처리를 하는 단계, 상기 부분 트렌치에 대한 불산 습식 식각을 실시하여 트렌치를 완성하는 단계를 구비하여 이루어진다.
Abstract:
PURPOSE: A gate spacer structure and a method for forming the same are provided to prevent bridge between a gate pattern and a bit line by entirely covering a gate electrode using silicon nitride as a spacer. CONSTITUTION: A gate pattern(200) sequentially stacked on a gate oxide pattern(110), a gate electrode(120) and a capping insulator pattern(130) is formed on a semiconductor substrate(100). An oxide spacer(141) is formed at both sidewalls of the gate electrode(120) and the gate oxide pattern(110). Also, a gate spacer(161) is formed at both sidewalls of the oxide spacer(141) and the capping insulator pattern(130). Thereby, the capping insulator pattern(130) is directly connected to the gate spacer(161). Therefore, the gate electrode(120) and the gate oxide pattern(110) are entirely covered by the capping insulator pattern(130) and the gate spacer(161). The capping insulator pattern(130) and the gate spacer(161) are made of silicon nitride.
Abstract:
PURPOSE: A method and an apparatus for removing a photoresist formed on an interlayer dielectric of a semiconductor device are provided to maintain a dielectric constant of the interlayer dielectric after an ashing process is performed on the photoresist formed on the interlayer dielectric. CONSTITUTION: An interlayer dielectric of a low dielectric constant is formed on a surface of a semiconductor substrate(S1). A photoresist is coated on an upper portion of the interlayer dielectric(S2). A contact hole is formed by patterning the photoresist and the interlayer dielectric(S3). The photoresist is removed by performing an ashing process for the photoresist and the interlayer dielectric is exposed thereby(S4). The interlayer dielectric is contacted with activated hydrogen by performing an activated hydrogen process(S5). A post-process such as a stripping process is performed(S6). The interlayer dielectric is formed by an SiOC:H-based compound. The activated hydrogen includes hydrogen plasma.
Abstract:
PURPOSE: A method for forming a contact pad of a semiconductor device is provided to prevent generation of a bridge formed between contact pads by forming an insulating layer having a contact hole. CONSTITUTION: A gate(251) protected by a shield layer(255) is formed on a side and an upper face of a semiconductor substrate(100). A dummy insulating layer is formed to cover a gap between the gates(251). A dummy contact hole is formed by patterning the dummy insulating layer. An interlayer dielectric(500) is formed on the dummy insulating layer in order to fill the dummy contact hole. A planarization process for the interlayer dielectric(500) is performed. A wet etch process for the planarized interlayer dielectric(500) is performed. The dummy insulating layer is removed selectively according to an etch selection ratio. A contact hole(550) is formed on a position of the removed dummy insulating layer. A conductive pad is formed to fill the contact hole(550).
Abstract:
PURPOSE: A method for fabricating an insulation layer between metallic interconnection patterns is provided to more easily insulate metal interconnection patterns of a semiconductor device by performing a liquid phase deposition(LPD) regarding a substrate to which the metal interconnection pattern is exposed. CONSTITUTION: A metal layer is formed on the substrate(20). A photoresist pattern(24b) is formed on the metal layer. The metal layer is etched to form a metal layer pattern(22a) by using the photoresist pattern as an etch mask. The insulation layer is formed on the substrate where the metal layer pattern and the photoresist pattern are formed. The insulation layer is anisotropically etched to form a spacer insulation layer(26a) on both sidewalls of the metal layer pattern and the photoresist pattern. An insulation layer is formed between the metal layer patterns by an LPD method while using the spacer insulation layer and the photoresist pattern as an oxide barrier layer. The photoresist pattern is eliminated.
Abstract:
반도체장치의 배선패턴 형성방법이 개시되어 있다. 마스크패턴을 사용하여 감광재료층과 제1배선물질층이 적층되어 있는 기판에 대해 포토에칭을 수행하여 제1배선패턴을 형성하되, 상기 마스크패턴의 패턴간격이 상기 제1배선패턴 배선선폭의 3배가 되도록 하는 한편, 상기 포토에칭시 상기 기판을 상기 제1배선물질층이 적층된 두께만큼 과도식각한다. 다음, 상기 과도식각된 결과물 전면에 균일한 두께의 절연막을 형성하고, 상기 절연막의 상부에 제2배선물질층을 적층한 후, 상기 제2배선물질층을 상기 제1배선패턴의 표면이 드러날 때까지 식각 또는 연마하여 제2배선패턴을 형성한다.
Abstract:
PURPOSE: A forming method is to provide a metal interconnect of a semiconductor device using a low dielectric constant organic dielectric layer with high porosity as an intermetallic insulating layer, thus to prevent a bowing effect and damage of the dielectric layer. CONSTITUTION: A forming method of a metal interconnect comprises the steps of: forming the first metal layer pattern to be connected with a portion of a semiconductor substrate(310); forming an etching barrier layer(340) on the first metal layer pattern; forming an insulating layer pattern on the etching barrier layer in the same size as a via hole to be formed; forming a low dielectric constant organic dielectric layer(380) on the insulating layer pattern; planarizing the dielectric layer to expose the insulating layer pattern; removing the insulating layer pattern to form a via hole for exposing the etching barrier layer; removing the exposed etching barrier layer to form a via hole for exposing the first metal layer pattern; and successively forming a metallic barrier(400) and the second metal layer pattern(410) in the via hole.
Abstract:
PURPOSE: A method for forming a self-aligned contact hole is provided to suppress a lift-off of an etch stop layer formed on an active region between gate patterns during the formation of an interlayer dielectric layer. CONSTITUTION: In the method, a gate oxide layer(23) is formed on a semiconductor substrate(21), and a plurality of gate patterns(29) are formed in parallel on a defined portion of the gate oxide layer(23). Next, a spacer(31) is formed on a sidewall of each gate pattern(29), and a nitride layer(33) is formed on an exposed portion of the substrate(21) or a possible remainder of the gate oxide layer(23) between the adjacent gate patterns(29). The nitride layer(33) may be formed by a plasma or heat treatment process. The etch stop layer(35) is then formed on a resultant structure including the nitride layer(33), with an improved thickness uniformity due to the nitride layer(33). Next, the interlayer dielectric layer(41) is formed thereon and then planarized. Thereafter, the interlayer dielectric layer(41) is etched to expose the etch stop layer(35) between the adjacent gate patterns(29). After that, by removing the exposed etch stop layer(35) and the underlying nitride layer(33), the self-aligned contact hole is formed.