Abstract:
A method of manufacturing a semiconductor device includes forming an isolation layer on a substrate, where an active pattern is defined, forming an insulating interlayer on the active pattern of the substrate and the isolation layer, removing portions of the insulating interlayer, the active pattern and the isolation layer to form a first recess, forming a first contact in the first recess on a first region of the active pattern exposed by the first recess, removing portions of the active pattern and the isolation layer in the first recess by performing an isotropic etching process, to form an enlarged first recess, and filling the enlarged first recess to form a first spacer that surrounds a sidewall of the first contact.
Abstract:
In a method of forming active patterns, first patterns are formed in a first direction on a cell region of a substrate, and a second pattern is formed on a peripheral circuit region of the substrate. The first pattern extends in a third direction crossing the first direction. First masks are formed in the first direction on the first patterns, and a second mask is formed on the second pattern. The first mask extends in a fourth direction crossing the third direction. Third masks are formed between the first masks extending in the fourth direction. The first and second patterns are etched using the first to third masks to form third and fourth patterns. Upper portions of the substrate are etched using the third and fourth patterns to form first and second active patterns in the cell and peripheral circuit regions.
Abstract:
A method of forming a DRAM can include forming a plurality of transistors arranged in a first direction on a substrate and forming a bit line structure that extends in the first direction, where the bit line structure being electrically coupled to the plurality of transistors at respective locations in the first direction. A plurality of first landing pads an be formed at alternating ones of the respective locations having a first position in a second direction on the substrate. A plurality of second landing pads can be formed at intervening ones of the respective locations between the alternating ones of the respective locations, where the intervening ones of the respective locations having a second position in the second direction on the substrate wherein second position is shifted in the second direction relative to the first position.
Abstract:
A semiconductor device includes an insulating interlayer over a substrate in a first region, the insulating layer including contact holes exposing a portion of a surface of the substrate, and contact plugs in the contact holes. The contact plugs include a stacked structure of a first barrier metal layer pattern and a first metal layer pattern. The semiconductor device also includes second metal layer patterns directly contacting with the contact plugs and an upper surface of the insulating interlayer. The second metal layer pattern consists is a metal material layer.
Abstract:
A semiconductor device may include a plurality of memory cells. The memory cells may be formed with respective fin shaped active regions with respective recesses formed therein. Thicknesses of the fins may be made relatively thicker around the recesses, such as by selective epitaxial growth around the recesses. The additional thicknesses may be asymmetrical so that portions of the fin on one side are larger than an opposite side. Related methods and systems are also disclosed.