摘要:
Provided are a semiconductor device and a method of fabricating the semiconductor device. The semiconductor device using a DMOS device includes: a semiconductor substrate, in which a first conductive type well is formed; a first conductive type gate electrode formed on the semiconductor substrate with a gate insulating layer intervening between the gate electrode and the semiconductor substrate; a second conductive type body electrode formed on the semiconductor substrate and separated from the gate electrode; a first conductive type drain electrode formed on the semiconductor substrate and separated from the gate electrode and the body electrode; a second conductive type first body region formed in the well under the body electrode; a second conductive type second body region extending from the first body region to the gate insulating layer and formed in the well; a first conductive type source region formed in the second body region and extending from the first body region to the gate insulating layer; and a first conductive type source electrode extending from the source region to surround the gate electrode on the semiconductor substrate with an insulating layer intervening between the source electrode and gate electrode.
摘要:
Provided are a semiconductor device and a method of fabricating the semiconductor device. The semiconductor device using a DMOS device includes: a semiconductor substrate, in which a first conductive type well is formed; a first conductive type gate electrode formed on the semiconductor substrate with a gate insulating layer intervening between the gate electrode and the semiconductor substrate; a second conductive type body electrode formed on the semiconductor substrate and separated from the gate electrode; a first conductive type drain electrode formed on the semiconductor substrate and separated from the gate electrode and the body electrode; a second conductive type first body region formed in the well under the body electrode; a second conductive type second body region extending from the first body region to the gate insulating layer and formed in the well; a first conductive type source region formed in the second body region and extending from the first body region to the gate insulating layer; and a first conductive type source electrode extending from the source region to surround the gate electrode on the semiconductor substrate with an insulating layer intervening between the source electrode and gate electrode.
摘要:
Provided are a semiconductor device and a method of fabricating the semiconductor device. The semiconductor device using a DMOS device includes: a semiconductor substrate, in which a first conductive type well is formed; a first conductive type gate electrode formed on the semiconductor substrate with a gate insulating layer intervening between the gate electrode and the semiconductor substrate; a second conductive type body electrode formed on the semiconductor substrate and separated from the gate electrode; a first conductive type drain electrode formed on the semiconductor substrate and separated from the gate electrode and the body electrode; a second conductive type first body region formed in the well under the body electrode; a second conductive type second body region extending from the first body region to the gate insulating layer and formed in the well; a first conductive type source region formed in the second body region and extending from the first body region to the gate insulating layer; and a first conductive type source electrode extending from the source region to surround the gate electrode on the semiconductor substrate with an insulating layer intervening between the source electrode and gate electrode.
摘要:
Provided are a semiconductor device including a source/drain and a gate formed using a doped polysilicon process, and a method of fabricating the semiconductor device. The method comprises: forming a gate insulating layer on a part of an active region on a first conductivity type epitaxial layer; forming a conductive layer on the epitaxial layer; implanting high concentration impurities of a second conductivity type a first portion of the conductive layer on the gate insulating layer and second portions of the conductive layer on both sides of the first insulating layer; patterning the conductive layer; forming a second insulating layer on the epitaxial layer and high concentration impurity regions of the second conductivity type below the second conductive pattern; and implanting low-concentration impurities of the second conductivity type into the epitaxial layer between a gate structure and the high concentration impurity regions.
摘要:
Provided are a semiconductor device and a method of fabricating the semiconductor device. The semiconductor device using a DMOS device includes: a semiconductor substrate, in which a first conductive type well is formed; a first conductive type gate electrode formed on the semiconductor substrate with a gate insulating layer intervening between the gate electrode and the semiconductor substrate; a second conductive type body electrode formed on the semiconductor substrate and separated from the gate electrode; a first conductive type drain electrode formed on the semiconductor substrate and separated from the gate electrode and the body electrode; a second conductive type first body region formed in the well under the body electrode; a second conductive type second body region extending from the first body region to the gate insulating layer and formed in the well; a first conductive type source region formed in the second body region and extending from the first body region to the gate insulating layer; and a first conductive type source electrode extending from the source region to surround the gate electrode on the semiconductor substrate with an insulating layer intervening between the source electrode and gate electrode.
摘要:
A semiconductor rectifier includes a substrate of a first conductivity type; a current path layer of the first conductivity type formed near the surface of the substrate; a current block layer of a second conductivity type laterally enclosing the current path layer and extending to a depth deeper than the current path layer; and first and second metal layers formed respectively contacting upper and lower surfaces of the substrate. The current path layer has an impurity concentration higher than that of the substrate, and the current block layer has an impurity concentration higher than that of the current path layer. The current path layer is small enough for the portion below the current path layer to be completely blocked by the depletion region formed around the current block layer when a reverse bias or no is applied to the rectifier. The current path layer and the current block layer can be formed in an epitaxial layer of the first conductivity type overlying a high-concentration substrate of the first conductivity type, and a buried layer of the second conductivity type below the current block layer can further reduce reverse bias current.