Abstract:
A semiconductor device includes: a wiring board including a first electrode pad on a surface thereof; a circuit board disposed to stand on the wiring board, and including an interconnection connected to the first electrode pad; and a semiconductor package disposed to face the wiring board with the circuit board interposed therebetween, and including a second electrode pad on a surface thereof, the second electrode pad being connected to the interconnection.
Abstract:
A measuring instrument includes a detector that outputs a measured value, a digital display unit, an analog display unit having a plurality of display segments, and a display controller. The display controller includes: a tolerance range display unit that lights or blinks display segments corresponding to a preset tolerance range relative to a preset value; a first determiner that obtains a difference between the present value and a present measured value and determines whether the difference is within an analog display range wider than the tolerance range; a difference display unit that lights a display segment corresponding to the last one or the last two digits of the present measured value when the first determiner determines that the difference is within the analog display range; a second determiner that determines whether the difference is within the tolerance range; and an acceptance or rejection display unit that displays a result determined by the second determiner.
Abstract:
A communication radio-frequency module is provided that has a semiconductor device to which an antenna element is connected. This communication radio-frequency module includes: a supporting body that has a waveguide formed therein; a wiring board that is fixed onto a surface of the supporting body; the semiconductor device that is flip-chip mounted onto the wiring board by ultrasonic bonding; and the antenna element that is disposed on the other surface of the supporting body. In this module, the wiring board includes a board core member that is made of a resin material, and the supporting body includes a supporting body core member that is also made of a resin material.
Abstract:
The wiring board comprises a plate-shaped conductive core material 10 with a through-hole 12 formed in, an insulation layer 14 formed on the surface of the conductive core material 10 and on the inside wall of the through-hole 12, a resin 18 buried in the through-hole 12 with the insulation layer 14 formed in, wirings 22a, 22b formed on the upper surface and the undersurface of the conductive core material 10 with the insulation layer 14 formed on, and an wiring 22d formed in the through-hole 20 formed in the resin 18 and electrically connected to the wirings 22a, 22b.
Abstract:
A high-frequency module includes a stiffener (a support substrate), a resin base member of which one surface is fixed to the stiffener, a first conductive pattern formed on said one surface of the resin base member, a second conductive pattern formed on the other surface of the resin base member for constituting a waveguide in combination with the first conductive pattern to pass a high-frequency signal through the resin base member and including a window for allowing the high-frequency signal to pass therethrough, a cap for covering a semiconductor element and for absorbing or reflecting the high-frequency signal, an adopter (a waveguide tube) fixed onto the second conductive pattern such that one open end thereof surrounds the window, and an antenna fixed to the other open end of the adaptor.
Abstract:
A communication radio-frequency module is provided that has a semiconductor device to which an antenna element is connected. This communication radio-frequency module includes: a supporting body that has a waveguide formed therein; a wiring board that is fixed onto a surface of the supporting body; the semiconductor device that is flip-chip mounted onto the wiring board by ultrasonic bonding; and the antenna element that is disposed on the other surface of the supporting body. In this module, the wiring board includes a board core member that is made of a resin material, and the supporting body includes a supporting body core member that is also made of a resin material.
Abstract:
A measuring instrument that includes a tube 21 having a female thread 211 and a spindle 3 having a lead screw 31 screwing with the female thread 211 and capable of being advanced and retracted in an axial direction along with rotation around the axial center, and measures dimensions etc. of a workpiece according to displacement in an axial direction of the spindle 3 based on a rotation amount of the spindle 3. According to this measuring instrument, a pitch P of the lead screw 31 is twice as large or more than the difference between an external diameter R and a core diameter r thereof, and the difference between the external diameter R and the core diameter r is one-fifth or less of the external diameter R. Because of the lead screw 31 with the large pitch, the spindle 3 can be moved at high speed, thus enhancing operational performance of the measuring instrument.
Abstract:
A wiring board includes a core layer and a pair of multilayer wiring portions. The core layer, having an upper surface and a lower surface, is formed from a resin composite which contains resin filler and encloses several pieces of carbon fiber cloth. One of the multilayer wiring portions is stacked on the upper surface of the core layer, while the other is stacked on the lower surface of the core layer. Each multilayer wiring portion is composed of a number of insulating layers and wiring patterns stacked alternately with the insulating layers. The wiring patterns of the upper and the lower wiring portions are connected to each other by conductors extending through the entire thickness of the core layer.
Abstract:
In a starter with a planetary gear speed reduction mechanism, a first output shaft retaining member (retaining member 10, washer 20) and a second output shaft retaining member (pinion retaining ring 250) are mounted on an output shaft 220 in such a manner as to sandwich from axially front and rear directions a bearing support portion of a housing 400 which supports one end of the output shaft 220, so that a thrust load in the frontward and rearward directions of the output shaft 220 is received at the front and rear end faces of the bearing support portion of the housing 400. Therefore, the axially rearward movement of the output shaft 220 is regulated assuredly without regulating it by the rear end face of the center bracket 360 and the mortor partition wall 800, thereby preventing deformation of the center bracket.
Abstract:
A protein designated "Lg-Flo1" can be produced recombinantly and confers brewer's yeast-type flocculating property, for example, when Lg-FLO1 DNA is expressed in non-flocculent yeast strain. Conversely, a flocculent yeast strain can be rendered non-flocculent by eliminating or disrupting the ability of the strain to express Lg-Flo1.