摘要:
An optical communication module comprising: a light emitting element to emit light; a light transmission medium to receive incidence of the light from the light emitting element; a diverging unit to be provided on the light transmission medium and to diverge some proportion of the light emitted from the light emitting element to the light transmission medium and propagating within the light transmission medium; and a first light receiving element to receive the light from the light emitting element, which is diverged by the diverging unit.
摘要:
A nonvolatile semiconductor memory device includes a semiconductor substrate, a first insulation layer formed on the semiconductor substrate, a charge storage layer formed on the first insulation layer, a second insulation layer formed on the charge storage layer, and a control electrode formed on the second insulation layer. The second insulation layer includes a first silicon oxide film formed above the charge storage layer, a silicon nitride film formed on the first silicon oxide film, a metal oxide film formed on the silicon nitride film, and a nitride film formed on the metal oxide film. The metal oxide film has a relative permittivity of not less than 7.
摘要:
A vapor-phase growth method for forming a boron-phosphide-based semiconductor layer on a single-crystal silicon (Si) substrate in a vapor-phase growth reactor. The method includes preliminary feeding of a boron (B)-containing gas, a phosphorus (P)-containing gas, and a carrier gas for carrying these gases into a vapor-phase growth reactor to thereby form a film containing boron and phosphorus on the inner wall of the vapor-phase growth reactor; and subsequently vapor-growing a boron-phosphide-based semiconductor layer on a single-crystal silicon substrate. Also disclosed is a boron-phosphide-based semiconductor layer prepared by the vapor-phase growth method.
摘要:
A cover apparatus of a cassette tape recorder comprising first and second covers rotatable to be openable and closable with respect to a body of the tape recorder, the first cover having a holder to encase a tape cassette so that the tape cassette encased in the cassette holder is rotatable in accordance with the rotation of the first cover. The first and second covers are coupled to each other through a slider engaged with the second cover and slidable along a side surface of the first cover. The first cover rotates to cover the entire tape cassette in cooperation with the second cover when the second cover is closed with respect to the tape recorder body. The second cover vertically moves by a predetermined height with respect to a surface of the first cover in accordance with a first sliding operation of the slider when the first cover is opened by a first predetermined angle with respect to the tape recorder body and horizontally moving a predetermined distance with respect to the surface of the first cover in accordance with a second sliding operation of the slider when said the cover is opened by a second predetermined angle greater than the first predetermined angle so that a portion of the tape cassette protrudes from a tip portion of the second cover. This arrangement allows the easily insertion and removal into and from the holder of the first cover.
摘要:
A nonvolatile semiconductor memory device includes a semiconductor substrate, a first insulation layer formed on the semiconductor substrate, a charge storage layer formed on the first insulation layer, a second insulation layer formed on the charge storage layer, and a control electrode formed on the second insulation layer. The second insulation layer includes a first silicon oxide film formed above the charge storage layer, a silicon nitride film formed on the first silicon oxide film, a metal oxide film formed on the silicon nitride film, and a nitride film formed on the metal oxide film. The metal oxide film has a relative permittivity of not less than 7.
摘要:
A cover apparatus of a cassette tape recorder comprising first and second covers rotatable to be openable and closable with respect to a body of the tape recorder. The first cover has a holder to encasing a tape cassette so that the tape cassette encased in the holder is rotatable in accordance with the rotation of the first cover, a length of the first cover in longitudinal directions being smaller than that of the tape cassette so that a portion of the tape cassette protrudes from the first cover when being encased in the holder. The second cover is arranged to be engaged with the first cover to be rotatable together with the first cover and movable along a surface of the first cover. The second cover, together with the first cover, rotates to cover the entire tape cassette when the first cover is closed with respect to the tape recorder body, and further the second cover moves with respect to the first cover when the first cover is opened with respect thereto, so that the portion of the tape cassette protrudes from tip portions of the first and second covers. This arrangement allows the user to easily take out the tape cassette from the tape recorder.
摘要:
The present invention is a production method of an R-T-B—C rare earth alloy (R is at least one element selected from the group consisting of rare earth elements and yttrium, T is a transition metal including iron as a main component, B is boron, and C is carbon). An R-T-B bonded magnet containing a resin component, or an R-T-B sintered magnet with a resin film formed on the surface thereof is prepared, and a solvent alloy containing a rare earth element R and a transition metal element T is prepared. Thereafter, the R-T-B bonded magnet is molten together with the solvent alloy. In this way, a rare earth alloy can be recovered from a spent bonded magnet or a defective one generated in a production process stage, and a rapidly quenched alloy magnet can be obtained. As a result, magnet powder is recovered from the R-T-B magnet, and the recycling of a magnet including a resin component can be realized.
摘要:
A nonvolatile semiconductor memory device includes a semiconductor substrate, a first insulation layer formed on the semiconductor substrate, a charge storage layer formed on the first insulation layer, a second insulation layer formed on the charge storage layer and including a first high dielectric insulating film which has a higher relative permittivity than a silicon nitride film and a second high dielectric insulating film which has a higher relative permittivity than a silicon nitride film, the first and second high dielectric insulating films being structured so that a silicon oxide film is interposed between them, a control electrode formed on the second insulation layer, a first portion formed between the charge storage layer and the second insulation layer and containing silicon and nitrogen, and a second portion containing silicon and oxygen and located between the charge storage layer and the second insulation layer.
摘要:
According to one embodiment, a semiconductor substrate includes a cell region and a peripheral circuit region, a first dielectric film is formed on the semiconductor substrate in the cell region and the peripheral circuit region, a first conductive film is formed on the first dielectric film in the cell region and the peripheral circuit region, a first inter-conductive-film dielectric film is formed on the first conductive film in the cell region, a second inter-conductive-film dielectric film is formed on the first conductive film in the peripheral circuit region and a film thickness thereof is larger than the first inter-conductive-film dielectric film, and a second conductive film is formed on the first inter-conductive-film dielectric film in the cell region and the second inter-conductive-film dielectric film in the peripheral circuit region.
摘要:
A semiconductor device includes an interelectrode insulating film formed between a charge storage layer and a control electrode layer. The interelectrode insulating film is formed in a first region above an upper surface of an element isolation insulating film, a second region along a sidewall of the charge storage layer, and a third region above an upper surface of the charge storage layer. The interelectrode insulating film includes a first stack including a first silicon nitride film or a high dielectric constant film interposed between a first and a second silicon oxide film or a second stack including a second high dielectric constant film and a third silicon oxide film, and a second silicon nitride film formed between the control electrode layer and the first or the second stack. The second silicon nitride film is relatively thinner in the third region than in the first region.