Hyundai Electronics Industries Co. Ltd.

Hynix Semiconductor Inc.

Jong Wook Lee

Hyung Ki Kim

Gyu Seog Cho

Disclosed is a method for SOI device, and particularly to a method for fabricating a full depletion type SOI device capable of minimizing a change in a threshold voltage of transistor according to a change in a thickness of semiconductor layer. The disclosed method for fabricating a full depletion type SOI device comprises: preparing a SOI wafer having a stack structure consisted of a base substrate, a buried oxide film, and a semiconductor layer, forming a dummy gate on an active region of the semiconductor layer, forming source/drain regions on an active region of the semiconductor layer at both sides of the dummy gate, depositing an insulating layer over the dummy gate and the semiconductor layer, polishing the insulating film using the dummy gate as a polishing stop layer, removing the dummy gate, etching a predetermined thickness of semiconductor layer exposed by removing the dummy gate, growing a delta doped silicon film and a silicon film doped in a low concentration on a remaining part of the semiconductor layer, the total thickness thereof being equal to that of the source/drain regions, and forming a gate having a gate oxide film on the silicon film doped in a low concentration.

Method for fabricating a full depletion type SOI device

Disclosed is a part depletion type SOI device capable of preventing a floating body effect and a method for fabricating the same. The part depletion type SOI device comprises physical isolated spaces on boundaries between a channel region and source/drain regions.

Method for fabricating a part depletion type SOI device preventing a floating body effect

The present invention provides an SOI device preventing the floating body effect, and a method for manufacturing the same. Disclosed is a method comprising the steps of: forming an isolation layer on a first silicon substrate; forming a conductive layer on the isolation layer and the first silicon substrate; forming a buried insulating layer on the conductive layer; bonding the second silicon substrate so as to contact with the buried insulating layer; exposing the isolation layer by removing backside of the first silicon substrate by selected thickness thereby defining a semiconductor layer; forming a transistor by forming a gate electrode, a source region and a drain region at selected portions of the semiconductor layer; etching a selected portion of the isolation layer so as to expose the conductive layer; and forming a body electrode to be contacted with the conductive layer within the isolation layer.

SOI semiconductor device capable of preventing floating body effect

A method for fabricating a semiconductor memory device using a silicon-on-insulator device, including forming a semiconductor memory device capable of reducing the topology between a cell region and a peripheral region and preventing floating body effect.

Semiconductor memory device and method for fabricating the same

A silicon-on-insulator (SOI) device having a double gate, comprising: a supporting substrate; a first insulating layer formed over the supporting substrate; a first silicon layer formed over the first insulating layer, the first silicon layer including a first impurity region of a first conductivity disposed in a central portion thereof and intrinsic regions disposed at the both sides of the first impurity region; a second insulating layer formed over the first silicon layer; a second silicon layer formed over the second insulating layer, the second silicon layer including a second impurity region of a second conductivity disposed in a central portion thereof and third impurity regions of first conductivities disposed at the both sides of the second impurity region; a third insulating layer formed over the second impurity region; and a polysilicon layer doped with impurity ions of first conductivities, formed over the third insulating layer.

SOI device with double gate and method for fabricating the same

Disclosed is a semiconductor device having low voltage characteristic and advantageous integrity simultaneously. The semiconductor device comprises a silicon-on-insulator (SOI) substrate of a stack structure comprising a base layer as a means for supporting, a buried oxide layer, and a semiconductor layer providing an active region; and a first transistor and a second transistor formed on the active region of the SOI substrate, wherein the first and second transistors are formed as a stack structure on one active region and they share one gate electrode, a drain region of the second transistor is electrically connected to the gate electrode and a source region of the second transistor is electrically connected to the active region.

Method for fabricating semiconductor device

A semiconductor memory device using a silicon-on-insulator device, including a semiconductor memory device capable of reducing the topology between a cell region and a peripheral region and preventing floating body effect.

A method for fabricating a CMOS device on a SOI, comprising the steps of: providing a SOI wafer having a stack structure of a base substrate, a buried oxide layer and a semiconductor layer; forming a field oxide film in the semiconductor layer to define an active region in which a PMOS device and a NMOS device are to be formed in the semiconductor layer of the SOI wafer, wherein the field oxide film is formed by performing thermal oxidation process so as to apply a compressive stress to the semiconductor layer that the PMOS device is to be formed; and forming the PMOS device and NMOS device in the active region defined by the field oxide film.

Method for fabricating CMOS device

Disclosed is a method for fabricating CMOS device using a SOI substrate, and more particularly the method for fabricating CMOS device capable of improving mobility of electron and hole. The present invention provides a method for fabricating CMOS device comprising the steps of: providing an SOI substrate having a stacking structure of a base layer, a buried oxide layer and a semiconductor layer, wherein the SOI substrate is divided into a first region where a PMOS is formed later and a second region where an NMOS is formed later; forming first field oxide films to be contacted with the buried oxide layer by applying a thermal oxidation to a selected portion of the semiconductor layer being disposed in the first region of the SOI substrate; forming trenches with a depth to be contacted with the buried oxide layer in a selected portion of the semiconductor layer being disposed in the second region of the SOI substrate and then forming second field oxide films by filling the trenches with an insulating layer; and forming the PMOS in the portion of the semiconductor layer being defined by those first field oxide films, and the NMOS in the portion of the semiconductor layer being defined by those second field oxide films.

Growing community of inventors

Kyoungki-do, South Korea

Jong Wook Lee