摘要:
SiC single crystal that includes a first dopant functioning as an acceptor, and a second dopant functioning as a donor is provided, where the content of the first dopant is no less than 5×1015 atoms/cm3, the content of the second dopant is no less than 5×1015 atoms/cm3, and the content of the first dopant is greater than the content of the second dopant. A manufacturing method for silicon carbide single crystal is provided with the steps of: fabricating a raw material by mixing a metal boride with a material that includes carbon and silicon; vaporizing the raw material; generating a mixed gas that includes carbon, silicon, boron and nitride; and growing silicon carbide single crystal that includes boron and nitrogen on a surface of a seed crystal substrate by re-crystallizing the mixed gas on the surface of the seed crystal substrate.
摘要:
According to one exemplary embodiment, a method for forming a contact over a silicide layer situated in a semiconductor die comprises a step of depositing a barrier layer on sidewalls of a contact hole and on a native oxide layer situated at a bottom of the contact hole, where the sidewalls are defined by the contact hole in a dielectric layer. The step of depositing the barrier layer on the sidewalls of the contact hole and on the native oxide layer can be optimized such that the barrier layer has a greater thickness at a top of the contact hole than a thickness at the bottom of the contact hole. According to this exemplary embodiment, the method further comprises a step of removing a portion of the barrier layer and the native oxide layer situated at the bottom of the contact hole to expose the silicide layer.
摘要:
A method of fabricating a planar architecture charge trapping dielectric memory cell array with rectangular gates comprises fabricating a multi-layer charge trapping dielectric on the surface of a substrate. The layer adjacent to the substrate may be an oxide. A polysilicon layer is deposited over the charge trapping dielectric. A word line mask is applied over the polysilicon layer to mask linear word lines in a first direction and to expose trench regions there between and the trenches are etched to expose the charge trapping dielectric in the trench regions. A bit line mask is applied over the polysilicon layer to mask gates in a second direction perpendicular to the first direction and to expose bit line regions there between and the bit lines are etched to expose the oxide in the bit line regions. The bit lines are implanted and insulating spacers are fabricated on exposed sidewalls. The oxide is removed to expose the substrate between insulating spacers in the bit line regions and a conductor is fabricated thereon to enhance conductivity of each bit line.
摘要:
The present invention relates to a sapphire monocrystalline body to be used as the substrate for a semiconductor for electronic parts or component parts, and to a monocrystalline sapphire substrate. The invention also relates to a method for working the same. The invention is based cleavage along the plane R of the sapphire monocrystalline body which cleavage is easy to accomplish and provides a surface high in precision. The inventive process includes forming linear crack parallel or vertical to a reference plane of the substrate, with a microcrack line as a starting point, to develop a crack in a thickness direction of the body.
摘要:
A bridge that can effectively use plural paths by restricting a single path by a spanning tree algorithm, thus preventing that a broadcast packet is circulated in a looped communication path when two neighbor brides configuring a spanning tree are physically connected with plural paths. The bridge incorporates a correspondence table for the correspondence between the transmission source Mac address and the transmission destination port of a packet. A transmission source Mac address registration section decides the transmission destination port of a packet to be transmitted from the port to other bridge. The transmission destination port is cataloged on the table. When the transmission packet is a broadcast packet or BPDU packet, it is divided to a specific port among ports of the bridge. Other packets are divided to the corresponding ports by referring to the content cataloged on the table. Thus all the paths can be effectively used.
摘要:
A method of manufacturing a semiconductor device is provided in which multi-layer structures are formed on a semiconductor substrate to form core and peripheral regions. Sidewall spacers are formed around the multi-layer structures and source and drain regions are implanted adjacent the sidewall spacers. The multi-layer structures and the source and drain regions are silicided and a stop layer is deposited over the semiconductor substrate after which a dielectric layer is deposited over the stop layer. A photoresist contact mask is deposited, processed, and used to form core contact openings over the core region, which expose the multi-layer structure in addition to the source and drain regions while covering the peripheral region. Protective secondary sidewall spacers are formed in the core contact openings over the exposed multi-layer structures. A second photoresist contact mask is deposited, processed, and used to form peripheral local interconnect openings over the peripheral region which the source and drain regions and portions of the plurality of multi-layer structures in the peripheral region while covering the core region. A conductive material is deposited over the dielectric layer and in the core contact and peripheral local interconnect openings and is chemical mechanical planarized to remove the conductive material over the dielectric layer so the conductive material is left isolated in the core and peripheral contact openings.
摘要:
An ink jet recording method forms an ink jet image on a recording medium by serially moving an ink jet recording head having a plurality of ink discharge ports arranged in an array along a conveyance direction of the recording medium. The method includes the step of providing a platen having a planar section upstream in the conveyance direction and a slant section slanted downstream in the conveyance direction and in a direction parting from the ink discharge ports, opposed to an array of the ink discharge ports when the ink jet recording head serially moves. The method further includes the step of forming an ink jet image on the recording medium by ink discharge from the ink discharge ports when the ink jet recording head moves at least three times across a same area of the recording medium, a reverse side of which is supported by the platen.
摘要:
A sheet feeding apparatus includes a discharge rotary body, a pinch rotary body, a drive transmission rotary body and a regulation member. The discharge rotary body feeds and discharges a sheet from a recording section. The pinch rotary body is disposed facing the discharge rotary body for pinching and feeding the sheet along the discharge rotary body. The drive transmission rotary body has a circumferential surface contacting a circumferential surface of the discharge rotary body with a pressure exerted in a direction different from a straight line drawn between rotary centers of the discharge rotary body and the pinch rotary body, for rotationally driving the discharge rotary body. The regulation member contacts the discharge rotary body when deformation of the discharge rotary body exceeds a predetermined quantity arising due to pressure from the drive transmission rotary body and regulates deformation of the discharge rotary body from exceeding the predetermined quantity.
摘要:
An ink jet recording apparatus, in which a recording head records on a recording medium disposed above a platen, includes a carriage for moving the recording head, a recovery mechanism having a contacting member, a guide shaft and a limiting mechanism. The guide shaft guides the carriage to a recording area and to a separate recovery area, and positions the recovery mechanism so that the contacting member is capable of contacting the surface of the recording head on which an ink discharge port is provided. The limiting mechanism has a guide surface and an elastic member, and limits the rotational movement of the carriage with respect to the guide shaft; the elastic member maintains the position of the carriage with respect to the platen at the recording area by applying an elastic force to the guide member.
摘要:
The present invention provides a sheet conveying apparatus with a convey roller for conveying a sheet; a plurality of pinch rollers arranged along the convey roller and adapted to urge the sheet against the convey roller; a pinch roller holder formed as one piece for supporting the plurality of pinch rollers, the rigidity of the pinch roller holder in a sheet conveying direction being greater than the rigidity of the pinch roller holder in a direction perpendicular to the sheet conveying direction; and a biasing device for acting on the pinch roller holder to urge the pinch rollers against the convey roller.