Abstract: An electronic component which functions as a discriminator includes a piezoelectric resonator having a substrate. First and second pattern electrodes are provided on a first major surface of the substrate. First and second support members made from an electrically conductive material are provided on external electrodes provided on one side surface of a piezoelectric resonator. One end of the first support member is electrically connected to a land of the first pattern electrode via electrically conductive paste and the other end of the first support member is mechanically connected to an insulating member disposed on the substrate. One end of the second support member is electrically connected to a land of the second pattern electrode via electrically conductive paste and the other end of the second support member is mechanically connected to another insulating member disposed on the substrate.

Abstract: A piezoelectric component prevents development of a short circuit between separate electrodes of a piezoelectric element and provides a high level of connection reliability. The piezoelectric component includes a piezoelectric element utilizing a longitudinal oscillation mode and being mounted on a mounting substrate. The piezoelectric element has on one main surface thereof a first electrode and a second electrode formed by dividing electrode material via longitudinally extending linear grooves and, on the other main surface, a third electrode. Conductive support members are secured to node sections of the first and second electrodes so as to be spaced apart from each other with respect to the longitudinal dimension of the piezoelectric substrate. The support members are adhered to and secured to pattern electrodes of the mounting substrate by conductive adhesive.

Abstract: A piezo-resonator included in a filter and/or an AM signal receiving circuit eliminates unwanted signals produced as a result of the piezo-resonator experiencing a mechanical impact. The piezo-resonator includes a piezoelectric substrate and first and second electrodes provided on opposite surfaces of the substrate. The first electrode is divided into three portions along its width by grooves extending along the longitudinal substrate. The grooves are formed so that the resulting divided portions are substantially symmetrical to each other with respect to the central axis extending along the longitudinal substrate. The peripheral portions of the divided electrode are used as one input/output terminal, while the central portion is used as the other input/output terminal. The piezo-resonator can be provided in at least the last stage of a plurality of resonators for use in a filter.

Abstract: A sealing structure and a sealing method for an electronic component achieves desired sealing properties and heat resistance. An electronic component element is mounted on a substrate having an electrode pattern disposed thereon, and is sealed by bonding a cap for covering the electronic component element on the substrate. An adhesive structure used to join the cap on the substrate includes a high-glass-transition-point adhesive partially coated on the cap bonded portion of the substrate, and a low-glass-transition-point adhesive coated over an entire periphery of the opening of the cap. The opening of the cap is pressed on a mounting portion of the substrate, and the adhesives are then cured to bond and seal the substrate and the cap.

Abstract: An electronic component has a substantially reduced size and is adapted to be produced at low costs without variation in superior quality of the component because of the ease of achieving electrical connection between a piezoelectric element and a electrode pattern on a substrate supporting the piezoelectric element. The piezoelectric element has a lower electrode formed on the lower surface thereof and an upper electrode formed on the upper surface thereof. The piezoelectric element is fixed to the substrate such that the lower electrode is bonded to an electrode provided on the substrate by a conductive adhesive. A conductive wire is fixed to the upper electrode of the piezoelectric element. A metallic cap is bonded to the substrate so as to cover and seal the piezoelectric element on the substrate. The cap is contacted at its inner surface by the wire, whereby an electrical connection is achieved between the cap and the upper electrode of the piezoelectric element.

Abstract: A piezoelectric element prevents the development of a short circuit between separate electrodes and provides a high level of connection reliability. The piezoelectric element utilizing a longitudinal oscillation mode includes a piezoelectric substrate which has on one main surface thereof a first electrode and a second electrode separated by longitudinally extending linear grooves and, on the other main surface, a third electrode. Conductive support members are secured to node sections of the first and second electrodes so as to be spaced apart from each other with respect to the longitudinal dimension of the piezoelectric substrate.

Abstract: A piezoelectric resonator adapted for use in the band from several hundreds of kilohertz to 2 MHz utilizes a newly discovered width vibration mode and permits use of a simplified support structure which reduces stress on the resonator and reduces the overall size of the resonator. The resonator has a substantially rectangular cross-sectional shape having a pair of shorter sides and a pair of longer sides. To achieve the newly discovered vibration mode, the ratio of the length b of the longer sides to the length a of the shorter sides is set to be within +10% of a value given byb/a=n(-2.70.sigma.+2.86)where n is an integer and .sigma. is the Poisson's ratio of the ymaterial used to form the resonator.

Abstract: A stirring device having a casing for forming a stirring chamber, a driving rotary shaft disposed in the casing, a plurality of stirring paddles fitted on the rotary shaft as being dispersed axially of the shaft and a plurality of projections attached to an interior wall surface of the casing. The projections are provided adjacent each other at least one in number on each operational track of a leading edge of the paddle so as to remove excess substance adhered to the paddle thereby preventing frictional wear of the casing by the substance. Also, because of an interspace provided between an axially adjacent pair of projections, the projections do not obstruct the stirring operation of the device.