Abstract:
A method for forming fine patterns of a semiconductor device using a double patterning process is provided to form plural wire lines by using a layout for forming an embossed wire pattern and by patterning a lower layer using a first pattern to form an opening on the lower layer and to form a wire line in the opening. An etching target layer(114) is formed on a substrate(100) including a first region and a second region. Plural first mask patterns(130a) are formed on the etching target layer. The first mask patterns have first pattern density in the first region and second pattern density in the second region. A first capping layer pattern(140a) is formed on the first region to gap-fill a space between two adjacent first mask patterns of the plural first mask patterns. A second capping layer pattern(142a) is formed in the second region to cover a sidewall of the first pattern so that a recess region having a predetermined width remains in the space. Plural second mask patterns(150a) are located on the same level as the first mask pattern in the recess region on the second capping layer. One of a first pattern being comprised of the first capping layer pattern and a second capping layer pattern, and a second pattern being comprised of the first mask pattern and a second mask pattern is removed. The etching target layer is etched by using the selected one pattern as an etching mask.
Abstract:
A method for forming a fine metal interconnection pattern of a semiconductor device using a damascene process is provided to easily embody various patterns with different sizes and pitches in a cell array region and a peripheral circuit region by using a layout used for directly patterning a predetermined conductive layer into an embossed pattern. An insulation layer is formed on a substrate(100). A plurality of mold patterns are disposed as a first layout on the insulation layer to expose the insulation layer through a first space. A metal hard mask pattern is formed in the first space by a damascene process. The mold pattern is eliminated. The insulation layer is etched by using the metal hard mask pattern as an etch mask to form a second space penetrating the insulation layer so that an insulation layer pattern(120a) having a positive pattern of the same layout as the first layout is formed. A metal interconnection pattern(150) having the same layout as the first layout is formed in the second space by a damascene process. The metal hard mask pattern and the metal interconnection pattern can include the same material.
Abstract:
중첩도 측정마크를 갖는 반도체소자 및 그 형성방법이 제공된다. 상기 반도체소자는 반도체기판 상에 스크라이브 라인 영역을 구비한다. 상기 스크라이브 라인 영역에 라인 공간 패턴들로 구성된 제 1 그룹 및 제 2 그룹을 갖는 제 1 어미자층이 배치된다. 상기 제 1 그룹의 라인 공간 패턴들의 공간 영역들 상에 라인 형태의 제 2 어미자 패턴들이 배치된다. 상기 제 2 그룹의 라인 공간 패턴들의 공간 영역들 상에 라인 형태의 아들자 패턴들이 배치된다. 이 방법은 반도체기판 상에 라인 공간 패턴들로 구성된 제 1 그룹 및 제 2 그룹을 갖는 제 1 어미자층을 형성한다. 상기 제 1 그룹의 라인 공간 패턴들의 공간 영역들 상에 라인 형태의 제 2 어미자 패턴들을 형성한다. 상기 제 2 그룹의 라인 공간 패턴들의 공간 영역들 상에 라인 형태의 아들자 패턴들을 형성한다. 중첩도 측정마크, 어미자, 아들자, 라인 공간 패턴, 보호막 링