摘要:
A lateral MOSFET according to the present invention has a trench gate structure having a cross sectional shape spreading toward an open end. The cross sectional shape is T-shape. The T-shaped cross section has a dimensional ratio of a width of a lower trench having a narrow width to a width of an upper trench having a wide width of 1:3, and a dimensional ratio of a depth of the lower trench to a depth of the upper trench of 1:1, the lower trench width having a same central axis as the upper trench width.
摘要:
A method of manufacturing a semiconductor device, including an interlayer insulating layer having a dielectric constant of about 1, includes at least one of hydrophobically modifying an interlayer insulating film for insulating lines from each other, before forming air gaps in the interlayer insulating film, and hydrophobically modifying the lines, after forming the air gaps in the interlayer insulating film.
摘要:
A polishing pad includes a main body having a polishing surface and a backing that is affixed to the back surface of the main body. The elasticity of the main body is within the range of 600 psi-16000 psi and preferably within the range of 1600 psi-16000 psi when a compressive pressure of 2 psi-16 psi is applied, and the thickness of the main body is within the range of 0.5 mm-3.0 mm. The elasticity of the backing is lower than that of the main body and exceeds 300 psi when a compressive pressure of 2 psi-16 psi is applied.
摘要:
A cleaning sheet has a foamed layer on the surface of a plastic base sheet with the thickness in the range of 25 μm or more and 125 μm or less. The foamed layer has average diameter of air bubbles in the range of 1 μm or more and 50 μm or less and preferably 30 μm or less, compressibility in the range of 3% or more and 7% or less, compression recovery ratio in the range of 40% or more and 60% or less, and the Shore D hardness in the range of 20 degrees or more and 30 degrees or less.
摘要:
A mass spectrometer detector having a coupling capacitor including an anode that is placed at a high potential of say −4.9 kV. An annular electrode is placed outside the anode. A voltage of say −5 kV is applied to the annular electrode. This reduces the potential difference between the anode and the annular electrode, mitigating the electric field. A peripheral electrode is mounted on the outer fringe of a dielectric body and stably held at a potential of say −2.5 kV, for example, by voltage-dividing resistors.
摘要:
This disclosure relates to improvements in a dental treatment chair assembly including a unit table having various instruments attached thereto in combination with a unit arm mechanism. The assembly is so constructed that the unit arm mechanism is made slidable in the direction of the mechanism crossing (preferably at right angles with) the body axis of the chair. Such construction makes it possible to meet the convenience of both a doctor and a nurse in their operation of the instruments in dental treatment.
摘要:
In a semiconductor device, a logic MOSFET and a switch MOSFET are formed in a high-resistance substrate. The logic MOSFET includes an epitaxial layer formed on the high-resistance substrate and a well layer formed on the epitaxial layer. The switch MOSFET includes a LOCOS oxide film formed on the high-resistance substrate, the LOCOS oxide film being sandwiched between trenches and thus having a mesa-shape in its upper part. The switch MOSFET further includes a buried oxide film and a SOI layer formed on the mesa-shape of the LOCOS oxide film. The upper surface of the mesa-shape of the LOCOS oxide film is positioned at the same height as the upper surface of the epitaxial layer.
摘要:
A distance between electrodes can be accurately measured by using a lifter. A substrate processing apparatus includes an upper electrode 120 and a lower electrode 310 facing each other within a processing chamber 102; a lift pin 332 that is protrusible from and retractable below the lower electrode and lifts up a substrate mounted on the lower electrode to be separated from the lower electrode; a lifter 330 that elevates the lift pin up and down; and a controller 400 that elevates the lift pin upward and brings the lift pin into contact with the upper electrode by driving the lifter while the substrate is not mounted on the lower electrode and measures a distance between the electrodes based on a moving distance of the lifter.
摘要:
A cleaning tape has a base tape made of a synthetic resin and a cleaning layer formed on a surface of this base tape. The cleaning layer has a binding agent and a large number of spherical particles dispersed in the binding agent in a single particle layer. Such a cleaning tape is capable of removing very small unwanted protrusions and particles on the surface of a target object such as a magnetic hard disk without forming scratches.