摘要:
A resonator device having an insulating substrate, a strip-shaped vibrating element which is mounted on said insulating substrate and is provided with driving electrodes formed on the main opposing surfaces of a piezoelectric substrate, and terminal electrodes which are provided on said insulating substrate so as to be electrically connected with said driving electrodes and to which driving signals are applied by an external signal source. At least the longitudinal side portions of said vibrating element are coated with a surface active agent. With such a constitution, fluctuations in resonant resistance which are due to the excitation level can be suppressed, thereby contributing to the stable operation of the device, reducing the number of producing steps, and raising the yield rate in production.
摘要:
A resonator device having an insulating substrate, a strip-shaped vibrating element which is mounted on said insulating substrate and is provided with driving electrodes formed on the main opposing surfaces of a piezoelectric substrate, and terminal electrodes which are provided on said insulating substrate so as to be electrically connected with said driving electrodes and to which driving signals are applied by an external signal source. At least the longitudinal side portions of said vibrating element are coated with a surface active agent. With such a constitution, fluctuations in resonant resistance which are due to the excitation level can be suppressed, thereby contributing to the stable operation of the device, reducing the number of producing steps, and raising the yield rate in production.
摘要:
The substrate for devices 10 comprises an insulating substrate 12 of an insulating material, conducting layers 14 formed on the insulating substrate 12 and opposed to each other at a certain distance, and a dielectric film 16 formed on that portion of the insulating substrate 12 between the conducting layers 14. The substrate 10 incorporates a capacitance constituted by the opposed electric layers 14 and the dielectric film 16. A piezoelectric oscillator 20 is connected to the left and right conducting layers 14b, 14c of the substrate for devices 10. A cap 22 is connected to a boundary part of the substrate 10 through epoxy resin 24. The substrate for devices 10 with a built-in capacitance can reduce fabrication costs of a piezoelectric oscillation device and a surface acoustic wave device.
摘要:
A radiographic intensifying screen having high radiographic image quality is composed of a support and a fluorescent layer formed on the support. The fluorescent layer contains a pigment coated phosphor in which pigment particles adhere to the surface of the phosphor and partly absorb the light emitted by the phosphor.
摘要:
A method for manufacturing a pattern structure includes the steps of forming a lift-off material on a base by an inkjet technique, forming a functional film on the base and the lift-off material by atomic layer deposition, and removing the lift-off material by a lift-off technique so as to form a pattern on the base from the functional film.
摘要:
An acoustic wave device includes, a substrate, an acoustic wave device chip that has a vibration part exciting an acoustic wave and is mounted on a surface of the substrate so that the vibration part is exposed to a space formed between the substrate and the acoustic wave device chip, and a joining part that is provided so as to surround the vibration part and joins the substrate and the acoustic wave device chip together. The joining part includes a first member made of solder, and a second member that is stacked on the first member and is made of a substance having a melting point higher than the solder. The second member has a thickness larger than a coplanarity of the surface of the substrate.
摘要:
A traverse device for simultaneous winding of yam packages in a spinning machine, which device can suppress the flexural vibration generated in a long rod. The traverse device incorporates a number of yarn guides 5 attached to a long, reciprocally moving rod 13 that is connected to a cam box 12 and in which a number of packages P are formed simultaneously. In particular, this device has an arrangement of a damping material 15 inside the rod 13, which is formed from a hollow pipe, and rapidly attenuates the vibration generated in the rod by the mechanical shock occurring at both ends of a reciprocal movement thereof.
摘要:
An europium activated oxysulfide phosphor represented by the formulaLn.sub.2 O.sub.2 S:Eu,(Sm)wherein Ln is at least one element selected from the group consisting of yttrium, gadolinium, lanthanum, lutetium and scandium is colored into red by mixing therewith a proper amount of calcium salt solely or together with strontium salt, and firing the resulting mixture at a temperature within the range of 1000.degree. to 1500.degree. C. By the firing, a CaS:Eu,(Sm) phosphor or a (Ca,Sr)S:Eu,(Sm) phosphor having a red body color is produced in an external portion of the Ln.sub.2 O.sub.2 S:Eu,(Sm) phosphor particle. The red colored phosphor thus obtained is used as a red emitting phosphor of a high contrast cathode ray tube for color television.