Samsung Electronics Co., Ltd.

Hoon-Sung Choi

Yuri Masuoka

Dong-Il Park

Il Min Lee

A semiconductor device includes: a substrate; a first buried insulation layer disposed on the substrate; a first well which is disposed on the first buried insulation layer in a first region defined by a first element separation film, and includes a first portion extending along an upper surface of the first buried insulation layer, and a second portion extending from the first portion in a direction from the substrate toward the first buried insulation layer; a second buried insulation layer disposed on the first portion of the first well; a first semiconductor film disposed on the second buried insulation layer; a first transistor on the first semiconductor film; and a second element separation film which separates the second buried insulation layer and the first semiconductor film from the second portion of the first well, on the first portion of the first well, wherein an upper surface of the second portion of the first well is placed on the same plane as an upper surface of the first element separation film.

Semiconductor device

A method of fabricating a semiconductor device includes providing a substrate including a semiconductor material having a first lattice constant and then patterning the substrate to form a first semiconductor pattern extending in a first direction. A second semiconductor pattern is also formed on and in contact with the first semiconductor pattern. The second semiconductor pattern extends in the first direction and has a second lattice constant that is sufficiently greater than the first lattice constant so that lattice stress is present at an interface between the first semiconductor pattern and the second semiconductor pattern. The second semiconductor pattern is further patterned to define a sidewall of the second semiconductor pattern that extends in a second direction intersecting the first direction. A gate electrode is formed, which extends in the first direction on the second semiconductor pattern.

Methods of forming semiconductor devices having stressed active regions therein

Semiconductor devices having stressed active regions therein and methods of forming same

A semiconductor comprises two transistors of the first conductivity type separated from two transistors of a second conductivity type by a first element isolation layer. Further, the two transistors of the first conductivity type are separated from each other by a second element isolation layer and the two transistors of the second conductivity type are separated from each other by a third element isolation layer. In example embodiments, the second and third element isolation layers are shallower than the first element isolation layer.

Semiconductor device and method of fabricating the same

A semiconductor device comprises: a substrate; a first well region of a first conductivity type and a second well region of a second conductivity type formed horizontally adjacent to each other in the substrate; a buried insulation layer formed on the first well region and the second well region; a first semiconductor layer formed to vertically overlap the first well region, and a second semiconductor layer formed to vertically overlap the second well region, on the buried insulation layer; a first isolation layer formed between the first semiconductor layer and the second semiconductor layer on the buried insulation layer; and a conductive layer formed on the first semiconductor layer and the second semiconductor layer to extend over the first semiconductor layer and the second semiconductor layer.

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Seoul, South Korea

Hoon-Sung Choi