摘要:
A voltage-controlled piezoelectric resonator may be implemented without requiring the use of a trimmer capacitor by virtue of the use of a capacitor array with or without an additional capacitor array, thus reducing the number of external parts. The capacitor array and the additional capacitor array can be packaged in an IC, thus enabling reduction in the size of the voltage-controlled piezoelectric resonator. The voltage-controlled piezoelectric resonator incorporating the capacitor array exhibits high stability both in terms of secular change and operation, which in turn ensures high stability of operation of a piezoelectric oscillation circuit incorporating this voltage-controlled piezoelectric resonator. An oscillation center frequency adjusting mechanism produces adjusting data, so that the adjustment of the oscillation center frequency can be effected purely electrically. Since mechanical adjusting operation that is essential in conventional arrangements is unnecessary, the time required for the adjustment of the oscillation center frequency is shortened to allow a reduction in the production cost of the voltage-controlled piezoelectric resonator.
摘要:
The digital mobile telephone system according to the present invention having an overlay configuration, allows a mobile terminal communicating with a base station to detect the field strength of a transmission from the base station covering a sector and an overlay region, notifies a switching station of the result of detection, and causes a frequency used in communication between the base station and the mobile terminal to be switched to the communication frequency for the overlay region, when the detected field strength exceeds a predetermined threshold level. When the detected field strength drops below the predetermined threshold level, the switching station switches the frequency used in communication between the base station and the terminal to the communication frequency for the sector.
摘要:
An antitussive having high activity, which is free from side effects such as psychotomimetic, which may also be administered orally is disclosed. The antitussive according to the present invention comprises as an effective ingredient a .delta.-opioid antagonist or a pharamaceutically acceptable salt thereof.
摘要:
A pattern position measuring method of measuring two-dimensional positions of a hyperfine pattern formed on the surface of a substrate. This method comprises a pattern position measuring step of measuring the positions of the pattern in a first flexural configuration produced in a supported state where the measured substrate is supported in a first plurality of positions of the measured substrate on a stage, a flexural configuration detecting step of detecting the first flexural configuration of the surface of the measured substrate, and a correcting step of correcting the pattern positions in the first flexural configuration that are measured by the pattern position measuring step to pattern positions in a second flexural configuration on the basis of the pattern positions in the first flexural configuration that are measured by the pattern position measuring step, the first flexural configuration detected by the flexural configuration detecting step and the previously stored second flexural configuration of the surface of the measured substrate which is produced when the measured substrate is supported in a second plurality of positions different from the first plurality of positions.
摘要:
A pattern position measuring method measures two-dimensional positions of a hyperfine pattern formed on the surface of a substrate. This method comprises a pattern position measuring step of measuring the positions of the pattern in a first flexural configuration produced in a supported state where the measured substrate is supported in first a plurality of positions of the measured substrate on a stage, a flexural configuration detecting step of detecting the first flexural configuration of the surface of the measured substrate, and a correcting step of correcting the pattern positions in the first flexural configuration that are measured by the pattern position measuring step to pattern positions in a second flexural configuration on the basis of the pattern positions in the first flexural configuration that are measured by the pattern position measuring step, the first flexural configuration detected by the flexural configuration detecting step and the previously stored second flexural configuration of the surface of the measured substrate which is produced when the measured substrate is supported in a second plurality of positions different from the first plurality of positions.
摘要:
A semiconductor device having a bump electrode on a semiconductor substrate above an electrode pad and metal film. The shape of the bump electrode is composed of a cubical portion and a skirt extending outward from the bottom of the cubical portion. In manufacturing such a semiconductor device, a dry film is used which is laminated on the metal film under a certain laminating condition and formed with an opening. A bump material is formed as a deposit on the metal film within the opening, through electrolytic plating. The deposit has the cubical portion corresponding in shape to the opening, and the skirt extending outward into a space between the dry film and the metall film, from the bottom of the cubical portion. The metal film is etched out using the deposit as a mask to make the deposit as a bump electrode of the semiconductor device.
摘要:
Provided is a solid electrolytic capacitor element which is reduced in ESR deterioration due to thermal shock and suppressed in variation in ESR changes, while having good initial characteristics of ESR. This solid electrolytic capacitor element is provided, on the surface of an anode body, with at least a dielectric layer, a solid electrolyte layer, a carbon layer that contains a first resin component and a conductive layer that contains a second resin component. Both of the first resin component and the second resin component have a hydroxyl group, and the difference Δγh (=γh2−γh1) between the hydrogen-bonding component value γh1 [mN/m] of the carbon layer surface and the hydrogen-bonding component value γh2 [mN/m] of the conductive layer surface is within the range of −3≦Δγh≦3 [mN/m].
摘要:
A liquid crystal display device includes: a liquid crystal device; a first dust-proof plate made of a birefringent material, and disposed on one of a light entrance side and a light exit side of the liquid crystal device; and a second dust-proof plate made of an isotropic refractive material, and is disposed on the other of the light entrance side and the light exit side of the liquid crystal device.
摘要:
To provide a miniaturized Fabry-Perot type tunable filter that can be applied to e.g. a light of wide wavelength range from infrared rays to ultraviolet rays and actuated at a low voltage.A movable portion moving in a direction parallel to the surface of the SOI substrate (hereafter called ‘plane direction’), a suspension supporting member supporting the movable portion elastically and movably, and a fixed portion secured to the SOI substrate are provided. By the comb-teeth electrode of the comb-teeth type electrostatic actuator that moves the movable portion, the first mirror structure body formed bonding to the surface of the movable portion is controlled and moved in the plane direction. The Fabry-Perot type tunable filter has a structure in which the first mirror surface of the first mirror structure body and the second mirror surface of the second mirror structure body formed by bonding to the surface of the fixed portion are arranged facing to each other in parallel, and the length thereof is changed by the move of the plane direction.
摘要:
A liquid crystal display device includes: a liquid crystal cell including liquid crystal operating in a twisted nematic mode; a first quartz plate optically compensating for the liquid crystal cell; a second quartz plate optically compensating for the liquid crystal cell; and a pair of polarizing elements disposed with the liquid crystal cell, the first quartz plate, and the second quartz plate interposed therebetween. Here, the thickness d [μm] of the first and second quartz plates, the polar angle θ [°] of the optical axis of the first and second quartz plates, and the cell gap CG [μm] of the liquid crystal cell satisfy the following conditional expressions: 0.7(16 cos2 θ−23.6 cos θ+14.6)(1+0.32(CG−3.0))