摘要:
An integrated electronic device having an electric connection between a first electrode of a semiconductor chip and a second electrode of a circuit board. One embodiment according to the present invention is a method for fabricating an integrated electronic device having an electric connection between a first electrode of a semiconductor chip and a second electrode of a circuit board, both surfaces of the first and second electrodes having an adhesive tendency to molten metal, the method comprising the steps of forming a metal bump on the first electrode, the metal bump being made of a soldering metal alloy consisting of a solid phase component and a liquid phase component at an operating temperature; and forming an electric connection between the first electrode and the second electrode by heating the soldering metal alloy so as to adhere to the surface of the second electrode.
摘要:
An antenna device includes an antenna unit that receives radio waves of a plurality of first frequency bands and outputs received signals, and a first band pass filter that transmits, out of the received signals that are output, received signals of at least two second frequency bands out of the first frequency bands.
摘要:
An antenna element is disclosed. A substrate is made of dielectric material and has a first face. A first antenna element is made of conductive material and is provided on the first face. A first power feeding portion is made of conductive material and is disposed on the first antenna element. A second antenna element is made of conductive material, is provided on the first face, and forms a loop surrounding the first antenna element with a gap. A second power feeding portion is made of conductive material. The second power feeding portion is extended from the second antenna element toward the first antenna element and is arranged to form an electromagnetic coupling with the first antenna element. A perturbation element is made of conductive material and is extended from the second antenna element. A length of loop is twice a circumferential length of the first antenna element.
摘要:
An integrated electronic device having an electric connection between a first electrode of a semiconductor chip and a second electrode of a circuit board. One embodiment according to the present invention is a method for fabricating an integrated electronic device having an electric connection between a first electrode of a semiconductor chip and a second electrode of a circuit board, both surfaces of the first and second electrodes having an adhesive tendency to molten metal, the method comprising the steps of forming a metal bump on the first electrode, the metal bump being made of a soldering metal alloy consisting of a solid phase component and a liquid phase component at an operating temperature; and forming an electric connection between the first electrode and the second electrode by heating the soldering metal alloy so as to adhere to the surface of the second electrode.
摘要:
A tape having a series of surface-type fastener pieces is manufactured by intermittently feeding a surface-type fastener tape blank composed of a release sheet of paper and a surface-type fastener of synthetic resin attached by an adhesive layer to the release sheet and comprising a base strip and a plurality of fastening elements, and fusing the surface-type fastener in a predetermined pattern by ultrasonic or high-frequency welding to produce gaps which define a series of surface-type fastener pieces on the release sheet. The release sheet with the series of surface-type fastener pieces attached thereto by the adhesive layer is then separated from a scrap composed of a surface-type fastener web from which the surface-type fastener pieces have been blanked out. Each of the surface-type fastener pieces is fused along its peripheral edge to prevent the fastening elements thereon from unraveling.
摘要:
A manufacturing of a semiconductor device includes forming one of a layer with a first metal and the layer with a second metal on one of a semiconductor chip mounting area of a support plate and a back surface of the semiconductor chip; forming the other of the layer with the first metal and the layer with the second metal on an area corresponding to a part of the area, in which one of the layer with the first metal and the layer with the second metal, of the other one of the semiconductor chip mounting area and the back surface of the semiconductor chip; and forming a layer which includes an alloy with the first metal and the second metal after positioning the semiconductor chip in the semiconductor chip mounting area to bond the semiconductor chip with the semiconductor chip mounting area.
摘要:
An antenna element is disclosed. A substrate is made of dielectric material and has a first face. A first antenna element is made of conductive material and is provided on the first face. A first power feeding portion is made of conductive material and is disposed on the first antenna element. A second antenna element is made of conductive material, is provided on the first face, and forms a loop surrounding the first antenna element with a gap. A second power feeding portion is made of conductive material. The second power feeding portion is extended from the second antenna element toward the first antenna element and is arranged to form an electromagnetic coupling with the first antenna element. A perturbation element is made of conductive material and is extended from the second antenna element. A length of loop is twice a circumferential length of the first antenna element.
摘要:
A plated structure is disclosed that includes a base formed of a copper-based material containing copper as a major component, a plating film formed of a tin-based material containing tin as a major component and provided over the base, and a tin-copper compound barrier film located at the boundary between the base and the plating film. The density of the tin-copper compound barrier film is greater than that of copper.