摘要:
Metal wires are formed side by side over a semiconductor substrate, with an interlayer insulating film interposed between the metal interconnections and the semiconductor substrate. The metal interconnections are covered with a passivation film composed of a lower silicon oxide film and an upper silicon nitride film. The silicon oxide film is deposited so that the maximum thickness of the portions of the silicon oxide film on the side faces of the metal interconnections is less than half of the minimum space between the metal interconnections. The silicon nitride film is deposited so as to be interposed between the portions of the silicon oxide film on the side faces of the adjacent metal interconnections.
摘要:
A dust removing apparatus suppresses pressure and temperature variations of cleaned gas to facilitate the removal of dust. A clean gas chamber delimited by a plurality of porous ceramic tubular filter elements is divided in two by a partition wall. The respective chambers are connected through discrete outlet pipes to a clean gas main pipe, and backwashing devices are provided in the respective outlet pipes. Furthermore, a porous ceramics filter element is provided on a bottom partition plate so that the gas flow velocity in the tubular filter elements can be insured to prevent dust from adhering thereto.
摘要:
After accumulating a BPSG film layer on a silicon substrate, a first Al--Si--Cu film layer, a W film layer and a second Al--Si--Cu film layer are successively accumulated on this BPSG film layer. A resist pattern with wide-width and narrow-width pattern portions is formed on the second Al--Si--Cu film layer. The wide-width pattern portion is provided at a position corresponding to a contact for connecting a first-layer metallic wiring and a second-layer metallic wiring, while the narrow-width pattern portion is provided at a position corresponding to a wiring portion for the first-layer metallic wiring. After applying first etching on the second Al--Si--Cu film layer with a mask of the resist patter, second etching is applied on the W film layer. Thereafter, by applying third etching, the resist pattern remaining on the first-layer metallic wiring is removed and the first Al--Si--Cu film layer is transfigured into a tall metallic film portion and a short metallic film portion. After accumulating an inter-layer insulating film layer on the first Al--Si--Cu film layer, etchback is applied on this inter-layer insulating film layer until the top of the tall metallic film portion is bared. Then, the second-layer metallic wiring is formed on the inter-layer insulating film layer so that the second-layer metallic wiring is connected with the tall metallic film portion.
摘要:
Provided is a method of unevenly distributing a specific element in a copper phase out of platinum group elements that exist in the copper phase, including further adding copper into a molten copper phase containing the platinum group elements including at least rhodium, thereby increasing a distribution ratio of rhodium in the molten copper phase.
摘要:
A power semiconductor device has the power semiconductor elements having back surfaces bonded to wiring patterns and surface electrodes, cylindrical communication parts having bottom surfaces bonded on the surface electrodes of the power semiconductor elements and/or on the wiring patterns, a transfer mold resin having concave parts which expose the upper surfaces of the communication parts and cover the insulating layer, the wiring patterns, and the power semiconductor elements. External terminals have one ends inserted in the upper surfaces of the communication parts and the other ends guided upward, and at least one external terminal has, between both end parts, a bent area which is bent in an L shape and is embedded in the concave part of the transfer mold resin.
摘要:
A reflective impedance element is connected to a port of a composite right/left-handed transmission line, and operates at a predetermined operating frequency so that an impedance when the reflective impedance element is seen from the port becomes a pure imaginary number jB. A reflective impedance component is connected to a port of the composite right/left-handed transmission line, and operates at the predetermined operating frequency so that an impedance when the reflective impedance element is seen from the port becomes −jB.
摘要:
A control method for drying clothes is disclosed. The method finds a difference in surface temperature between clothes catching air and the same clothes catching no air, and then determines a degree of dryness in the clothes based on the difference. Based on the degree of dryness, the method determines at what time heating should start.
摘要:
A method for fabricating a semiconductor device includes the steps of: forming a plurality of lower interconnections at intervals in a first insulating film; removing a portion of the first insulating film located between the lower interconnections, thereby forming an interconnection-to-interconnection gap; forming a second insulating film over the first insulating film in which the lower interconnections and the interconnection-to-interconnection gap are formed such that an air gap is formed out of the interconnection-to-interconnection gap; and forming, in the second insulating film, a connection portion connected to one of the lower interconnections and an upper interconnection connected to the connection portion. The connection portion is formed to be connected to one of the lower interconnections not adjacent to the air gap.
摘要:
A method for fabricating a semiconductor device includes the steps of: forming a plurality of lower interconnections at intervals in a first insulating film; removing a portion of the first insulating film located between the lower interconnections, thereby forming an interconnection-to-interconnection gap; forming a second insulating film over the first insulating film in which the lower interconnections and the interconnection-to-interconnection gap are formed such that an air gap is formed out of the interconnection-to-interconnection gap; and forming, in the second insulating film, a connection portion connected to one of the lower interconnections and an upper interconnection connected to the connection portion. The connection portion is formed to be connected to one of the lower interconnections not adjacent to the air gap.
摘要:
A cogeneration system of the present invention includes: an electric power generator (5); a cooling circuit (10) configured to cool the electric power generator (5) with a first heat transfer medium; a heat exchanger (16) provided on the cooling circuit (10); an exhaust heat recovery circuit (12) through which a second heat transfer medium that exchanges heat with the first heat transfer medium via the heat exchanger (16) flows; a heat storage unit (20) connected to the exhaust heat recovery circuit (12) and configured to store the second heat transfer medium that has undergone a heat exchange by the heat exchanger (16); and a controller (21), wherein a first temperature sensor (17), and a heater to which electric power is supplied from the electric power generator (5), are connected, in this order, downstream of the heat exchanger (16) in a direction in which the second heat transfer medium flows, and the controller (21) controls a flow rate of a circulating pump (13) so that, based on a temperature detected by the first temperature sensor (17), the detected temperature becomes a predetermined target temperature. In addition to preventing water temperature decrease in heat recovery and ensuring safety, this configuration can keep water temperature high at all times.