Abstract: A method for manufacturing a wiring board for mounting an electronic component, a wiring board for mounting an electronic component, and a method for manufacturing an electronic-component-mounted wiring board are provided. A bonding material paste, which can include solder and an electric insulation material made of a resin, can be placed on chip mount terminal pads and heated to fuse the solder and soften the electric insulation material. Subsequently, the solder is solidified to form solder bumps. Further, the electric insulation material is cured on a surface of each of the solder bumps and a surface of a multilayer board around each of the solder bumps to form an electric insulation surface layer. Accordingly, when a chip is mounted to such wiring boards, the electric insulation surface layer minimizes or eliminates the connection between adjacent solder bumps during re-fusing of the solder.

Abstract: A wiring board and a method for manufacturing the wiring board reinforced by means of a resin is provided. Embodiments of the wiring board allow for reliable attachment of a connection member, like a socket, to a terminal member. For example, a base of terminal pins is put on pin grid array (PGA) terminal pads, and a bonding material paste including solder and an electric insulation material made of a resin is placed on each of the PGA terminal pads. The bonding material paste is then heated to fuse the solder and soften the electric insulation material. Subsequently, the bonding material paste is cooled to solidify the solder and bond each of the bases to a corresponding PGA terminal pad and form an electric insulation surface layer on an exposed surface of each of solder junctions to which the respective bases are bonded.

Abstract: A spark plug structure comprising; a cylindrical metallic shell; a joint type insulator having a center bore, and including a front half piece and a rear half piece, each made of a tubular aluminum nitride (AlN), and the front and rear half pieces being joined at their respective end by means of a glass sealant, and encased into the metallic shell; a center electrode placed into the center bore of the insulator; an elongated terminal placed into the rear half piece of the insulator; an electrically conductive glass provided to seal respective spaces appeared between the center electrode, insulator and the terminal; the front half piece having an elongated projection, the length of which is more than 2.0 mm, and the rear half piece having a recess the depth of which is more than 2.0 mm, the front and rear half pieces being jointed at the projection and the recess by means of an annular glass sealant which has thickness of less than 2.0 mm and length of more than 2.0 mm.

Abstract: An ultrasonic driven type motor in which an ultrasonic torsional vibrator is activated to generate a forward turning torque for driving a rotor synchronously with the expansion of at least one piezoelectric actuator provided between the vibrator and the rotor, and to generate a return turning torque synchronously with the constriction of the piezoelectric actuator, and the piezoelectric actuator has a coupling control characteristic so that only the forward turning torque is selectively transmitted to the rotor.