摘要:
There is provided a method for producing a spark plug in which welding strength between a noble metal tip and an electrode joined by laser welding can be restrained from becoming weak. A noble metal tip (90) to be joined to a center electrode (2) or ground electrode of a spark plug to form a spark discharge gap is resistance-welded to each electrode containing no noble metal and then laser-welded. In the noble metal tip (90) exposed under a severe environment involving spark discharge, a molten portion (80) formed in such a manner that a portion of the noble metal tip (90) and a portion of the electrode are melted by laser welding and a non-molten portion (95) on the noble metal tip (90) side are apt to be peeled from each other in a boundary surface (83) between the molten portion (80) and the non-molten portion (95). The noble metal content in the molten portion (80) however becomes higher because a flange portion is formed in a bottom portion by pressing force applied on the noble metal tip (90) at the time of resistance welding and then irradiated with a laser beam. Accordingly, peeling can be prevented from occurring in the boundary surface (83).
摘要:
There is provided a resonator having a piezoelectric ceramic resonator which has excellent free-fall resistance. The resonator comprises a piezoelectric ceramic resonator 2 with a vibrating electrode formed, and a substrate 3 which supports the piezoelectric ceramic resonator 2, wherein the piezoelectric ceramic resonator 2 satisfies the condition of U≧0.88×H+20.28, wherein U=maximum elastic energy (kJ/m3) per unit volume, and H=drop height (m) (H>1). The present invention can be applied to a resonator 1, wherein the substrate 3 has terminal electrodes 31, 32, and the piezoelectric ceramic resonator 2 is in electrical continuity with the vibrating electrode and is supported on the substrate 3 at both ends via a conductive stator 4.
摘要翻译:提供了具有优异的自由落体电阻的压电陶瓷谐振器的谐振器。 谐振器包括:形成有振动电极的压电陶瓷谐振器2和支撑压电陶瓷谐振器2的基板3,其中压电陶瓷谐振器2满足U> = 0.88×H + 20.28的条件,其中U =最大弹性能 (kJ / m 3)/ H =滴高(m)(H> 1)。 本发明可以应用于谐振器1,其中基片3具有端子电极31,32,并且压电陶瓷谐振器2与振动电极电连通,并且通过导电定子在两端支撑在基板3上 4。
摘要:
A semiconductor device with improved reliability and its manufacturing method is offered. The semiconductor device of this invention includes a pad electrode formed on a semiconductor substrate through a first insulation layer, and a via hole formed in the semiconductor substrate and extending from a back surface of the semiconductor substrate to the pad electrode, wherein the via hole includes a first opening of which a diameter in a portion close to the pad electrode is larger than a diameter in a portion close to the back surface of the semiconductor substrate, and a second opening formed in the first insulation layer and continuing from the first opening, of which a diameter in a portion close to the pad electrode is smaller than a diameter in a portion close to the front surface of the semiconductor substrate.
摘要:
A stacked MCM is manufactured at reduced cost without using expensive apparatus. A first wiring and a second wiring are formed on a surface of a semiconductor chip of a first semiconductor device through an insulation film. A glass substrate having an opening to expose the second wiring is bonded to the surface of the semiconductor chip on which the first wiring and the second wiring are formed. A third wiring is disposed on a back surface and a side surface of the semiconductor chip through an insulation film and connected to the first wiring. And a conductive terminal of another semiconductor device is connected to the second wiring through the opening.
摘要:
Guide wire fixing means is provided for an insertion portion of an endoscope, and a guide wire is releasably engaged when inserting/removing a therapeutic instrument running on the guide wire with a distal end portion of the guide wire inserted into a therapeutic instrument insertion channel of the endoscope being led out from a distal end opening portion of the channel.
摘要:
A first component part formed of a first styrene resin composition and a second component part formed of a second styrene resin composition are fastened by solvent welding by means of a terpene type solvent, to provide a cartridge which is almost free of deformation at the peripheries of joints, has a high positioning precision for component parts and has a high rigidity.
摘要:
It is to provide an improved method for preparation of microsphere from an emulsion wherein an organic phase containing an organic solvent having a boiling point lower than that of water and a hardly-water-soluble polymer is emulsified in an aqueous phase by an in-water drying method, which comprises: (1) using an apparatus equipped with a gas separation membrane; (2) supplying the emulsion to be subjected to in-water drying to one side of said gas separation membrane; (3) evaporating off the organic solvent contained in said emulsion to the other side of said gas separation membrane, which can remove the organic solvent with high efficiency and can be carried out in a closed system and hence is favorable from the environmental viewpoint.
摘要:
This invention provides a semiconductor device and a manufacturing method thereof which can minimize deterioration of electric characteristics of the semiconductor device without increasing an etching process. In the semiconductor device of the invention, a pad electrode layer formed of a first barrier layer and an aluminum layer laminated thereon is formed on a top surface of a semiconductor substrate. A supporting substrate is further attached on the top surface of the semiconductor substrate. A second barrier layer is formed on a back surface of the semiconductor substrate and in a via hole formed from the back surface of the semiconductor substrate to the first barrier layer. Furthermore, a re-distribution layer is formed in the via hole so as to completely fill the via hole or so as not to completely fill the via hole. A ball-shaped terminal is formed on the re-distribution layer.
摘要:
To select an element block from an element tree obtained by analyzing a structured document and arrange the element block into a page in a simple and appropriate manner. First, a pointer for referring to a next previous element block is provided. Secondly, page-break processing corresponding to the type of contents of the element block is performed.
摘要:
An electronic organ 1 and a personal computer 2 are connected with a MIDI cable. The personal computer 2 is connected to a server 4 via a communication network 3. The personal computer 2 downloads a controlling program from the server 4. The electronic organ 1 is set to be a listening trial mode by an operation of the personal computer 2. In the listening trial mode, an output of a data in a temporally storage area is prohibited. The server 4 provides a first encoded performance data to the personal computer 2, and the personal computer 2 decodes the received first encoded performance data. The electronic organ 1 generates a key, and the personal computer 2 secondary encodes the performance data with the key and transmits it to the electronic organ 1. The electronic organ 1 deletes the data stored in the temporally storage area after the listening trial.