摘要:
A semiconductor apparatus comprising a vertical type semiconductor device having a first conducting type semiconductor substrate, a drain layer formed on the surface of the semiconductor substrate, a drain electrode formed on the surface of the drain layer, a second conducting type base layer selectively formed on the surface of the semiconductor substrate opposite to the drain layer, a first conducting type source layer selectively formed on the surface of the second conducting type base layer, a source electrode formed on the first conducting type source layer and the second conducting type base layer, and a gate electrode formed in contact with the first conducting type source layer, the second conducting type base layer and the semiconductor substrate through a gate insulating film and a lateral semiconductor device having an insulating layer formed in a region of the surface of the semiconductor substrate different from the second conducting type base layer, and a polycrystalline semiconductor layer formed on the insulating layer and having a first conducting type region and a second conducting type region, wherein the first conducting type source layer of the vertical semiconductor device and the first conducting type region of the polycrystalline semiconductor layer are simultaneously formed.
摘要:
A semiconductor device includes: a first semiconductor layer of a first conductivity type; a second semiconductor layer of the first conductivity type provided on a main surface of the first semiconductor layer and having a lower impurity concentration than that of the first semiconductor layer; a third semiconductor layer of a second conductivity type provided on the second semiconductor layer; a fourth semiconductor layer of the first conductivity type selectively provided on the third semiconductor layer; a gate electrode provided in a trench passing through the third semiconductor layer and reaching the second semiconductor layer; a first main electrode contacting the fourth semiconductor layer and contacting the third semiconductor layer through a contact groove provided to pass through the fourth semiconductor layer between the contiguous gate electrodes; a second main electrode provided on an opposite surface to the main surface of the first semiconductor layer; and a fifth semiconductor layer of the second conductivity type provided in an interior portion of the second semiconductor layer corresponding to a part under the contact groove. An uppermost portion of the fifth semiconductor layer contacts the third semiconductor layer, a lowermost portion of the fifth semiconductor layer has a higher impurity concentration than that of the other portion in the fifth semiconductor layer and is located in the second semiconductor layer and not contacting the first semiconductor layer, and the fifth semiconductor layer is narrower from the uppermost portion to the lower most portion.
摘要:
A semiconductor device includes: a semiconductor substrate; a lateral MOSFET formed in an upper portion of a first region of the semiconductor substrate; a vertical MOSFET formed in a second region of the semiconductor substrate; a backside electrode formed on a lower surface of the semiconductor substrate and connected to a lower region of source/drain regions of the vertical MOSFET; and a connecting member penetrating the semiconductor substrate and connecting one of source/drain regions of the lateral MOSFET to the backside electrode.
摘要:
A semiconductor device includes a second-conductivity-type base region provided on a first-conductivity-type semiconductor layer, a first-conductivity-type source region provided on the second-conductivity-type base region, a gate insulating film covering an inner wall of a trench which passes through the second-conductivity-type base region and reaching the first-conductivity-type semiconductor layer, a gate electrode buried in the trench via the gate insulating film, and a second-conductivity-type region being adjacent to the second-conductivity-type base region below the first-conductivity-type source region, spaced from the gate insulating film, and having a higher impurity concentration than the second-conductivity-type base region. c≧d is satisfied, where d is a depth from an upper surface of the first-conductivity-type source region to a lower end of the gate electrode, and c is a depth from an upper surface of the first-conductivity-type source region to a lower surface of the second-conductivity-type base region.
摘要:
A high-breakdown-voltage semiconductor device includes a high-resistance semiconductor layer, a drift layer of the first conductivity type selectively formed in the surface of the high-resistance semiconductor layer, a drain layer formed in the surface of the drift layer of the first conductivity type, base layers of the second conductivity type selectively formed in the surface of the high-resistance semiconductor layer, a plurality of island-shaped source layers of the first conductivity type formed in the surfaces of the base layers of the second conductivity type, a gate electrode formed on the base layers of the second conductivity type between the source layers of the first conductivity type and the drift layer of the first conductivity type and between adjacent source layers of the first conductivity type via a gate insulating film, a drain electrode which contacts the drain layer, and source electrodes which contact both the source layers of the first conductivity type and the base layers of the second conductivity type.
摘要:
According to one embodiment, a semiconductor device includes a drift region of a first conductivity type, a base region of a second conductivity type, a source region of the first conductivity type, a gate electrode in a trench shape, a contact region of the second conductivity type, a drain electrode, and a source electrode. The drift region is selectively provided in a drain layer of the first conductivity type from a surface of the drain layer to an inside of the drain layer. The base region is selectively provided in the drift region from a surface of the drift region to an inside of the drift region. The source region is selectively provided in the base region from a surface of the base region to an inside of the base region. The gate electrode penetrates from a part of the source region through the base region adjacent to the part of the source region to reach a part of the drift region in a direction substantially parallel to a major surface of the drain layer. The contact region is selectively provided on the surface of the drift region. The contact region contains an impurity having a concentration higher than an impurity concentration of the base region. The drain electrode is connected to the drain layer. The source electrode is connected to the source region and the contact region. The contact region extends from a side of the drain layer toward the drift region and does not contact the drain layer.
摘要:
A semiconductor module comprises a mounting board. A plurality of power switching device chips are mounted on the mounting board by flip-chip bonding. The chip has an upper surface and a lower surface and is configured to face the upper surface toward the mounting board. A drive IC chip is mounted on the mounting board by flip-chip bonding. The drive IC chip is operative to drive gates of transistors formed in the plurality of power switching device chips. A plurality of heat sink members are located on the lower surfaces of the plurality of power switching device chips, respectively. A resinous member is provided to seal the plurality of power switching device chips and the drive IC chip in a single package.
摘要:
A body layer of a first conductivity type is formed on a semiconductor substrate, and a source layer of a second conductivity type is formed in a surface region of the body layer. An offset layer of the second conductivity type is formed on the semiconductor substrate, and a drain layer of the second conductivity type is formed in a surface region of the offset layer. An insulating film is embedded in a trench formed in the surface region of the offset layer between the source layer and the drain layer. A gate insulating film is formed on the body layer and the offset layer between the source layer and the insulating film. A gate electrode is formed on the gate insulating film. A first peak of an impurity concentration profile in the offset layer is formed at a position deeper than the insulating film.
摘要:
A semiconductor device comprises a semiconductor substrate; a semiconductor layer having a higher resistance than that of said semiconductor substrate and provided on a top surface of said semiconductor substrate; a gate electrode provided on a gate insulating film on the top surface of said semiconductor layer; a drain layer of a first conductivity type selectively provided in a location in said semiconductor layer in one side of said gate electrode; a drain electrode connected to said drain layer; a source layer of the first conductivity type selectively provided in a location in said semiconductor layer in the other side of said gate electrode; an element-side connecting portion selectively provided on said semiconductor layer, which does not reach a channel portion between said source layer and said drain layer of said semiconductor layer and also does not reach to said semiconductor substrate, and which is in contact with said source layer and has lower resistance than that of said semiconductor layer; a contact-side connecting portion selectively provided on said semiconductor layer, having lower resistance than said semiconductor layer and extending deeper toward said semiconductor substrate than said element-side connecting portion; a first source electrode connecting said source layer, said element-side connect portion and said contact-side connect portion; and a bottom electrode provided on the bottom surface of said semiconductor substrate in connection therewith.