Abstract:
A first printed circuit board includes a first insulating board substantially made of thermoplastic resin and a first conductive pattern. A second printed circuit board includes a second insulating board and a second conductive pattern. The first and second printed circuit boards are overlapped. The overlapped portion of the first and second printed circuit boards is heat pressed to connect the first and second printed circuit boards with a heat-pressing tool while the first insulating board is cooled at an area adjacent to an area pressed by the heat-pressing tool. With the heat pressing, the first and second lands are electrically connected and the thermoplastic resin is softened and plastically deformed to bond the first insulating board to the second insulating board. The thickness of the first insulating board is preferably controlled at the heat pressed area and the area adjacent to the heat pressed area by the cooling.
Abstract:
A circuit component comprising a circuit board and a terminal for mounting the circuit board on a second circuit board. A length of the circuit board is 10 mm-80 mm, a difference in a coefficient of thermal expansion between the circuit board and the second circuit board is 0.2×10−5/° C. or greater. The terminal is made of an elastic material, and comprised of a first connection section, a second connection section and an elastic section disposed between the first and second connection sections, and the terminal separates the circuit board from the second circuit board by 0.3 mm-5 mm. In the circuit components of the present invention, deterioration in the conduction between the circuit board and the second circuit board due to heat cycles can be prevented. Thus, a circuit component having stable operating characteristics for a long period of time is obtained.
Abstract:
A first printed circuit board includes a first insulating board substantially made of thermoplastic resin and a first conductive pattern. A second printed circuit board includes a second insulating board and a second conductive pattern. The first and second printed circuit boards are overlapped. The overlapped portion of the first and second printed circuit boards is heat pressed to connect the first and second printed circuit boards with a heat-pressing tool while the first insulating board is cooled at an area adjacent to an area pressed by the heat-pressing tool. With the heat pressing, the first and second lands are electrically connected and the thermoplastic resin is softened and plastically deformed to bond the first insulating board to the second insulating board. The thickness of the first insulating board is preferably controlled at the heat pressed area and the area adjacent to the heat pressed area by the cooling.
Abstract:
A component carrier for an electronic component, said component carrier being made in one piece of a metal sheet material and provided with means for surface mounting on a printed circuit board (PCB) and with holding flanges (2a, 2b) for holding an electronic component. The component carrier has a base (1) provided with a central soldering platform for surface mounting on the PCB. The holding flanges (2a, 2b) extend from the base (1) and are connected to the base (1) via tongues (4a-4d) of the metal sheet material, said tongues (4a-4d) extending in a plane parallel with the base (1).
Abstract:
A component carrier for an electronic component, said component carrier being made in one piece of a metal sheet material and provided with means for surface mounting on a printed circuit board (PCB) and with holding flanges (2a, 2b) for holding an electronic component. The component carrier has a base (1) provided with a central soldering platform for surface mounting on the PCB. The holding flanges (2a, 2b) extend from the base (1) and are connected to the base (1) via tongues (4a-4d) of the metal sheet material, said tongues (4a-4d) extending in a plane parallel with the base (1).
Abstract:
Mechanically formed standoffs in a disk drive integrated circuit interconnect reduces the cost of manufacturing and improves the reliability of the electrical interconnections thereof. Connection pads defined along the interconnect are bonded with bonding pads of a signal producing source and a signal processing source. The standoffs provide mechanical stops during the bonding process, enabling sufficient bonding material to form between bonding areas. The standoffs are mechanically formed with a punch and die assembly either directly through a bonding pad predefined along traces on the interconnect or adjacent the bonding pad. The standoffs formed through the bonding pads are covered with solder or other electrically conductive bonding material.
Abstract:
An integrated circuit device having an array of flexible leads attached to the bottom of an integrated circuit package. There is provided a sheet of electrically conductive material. A plurality of slots are punched into the sheet, such that there is formed a plurality of beams. The beams are then bent into a spring shape. The sheet is placed over an integrated circuit package which has an array of contact pads extending across a bottom surface of the package. The beams are aligned and attached to the contact pads. The beams are then cut and separated from the remainder of the sheet. The sheet is removed, wherein there is constructed an integrated circuit package that has a two dimensional array of flexible leads.
Abstract:
A method for attaching an array of flexible leads to the bottom of an integrated circuit package. There is provided a sheet of electrically conductive material. A plurality of slots are punched into the sheet, such that there is formed a plurality of beams. The beams are then bent into a spring shape. The sheet is placed over an integrated circuit package which has an array of contact pads extending across a bottom surface of the package. The beams are aligned and attached to the contact pads. The beams are then cut and separated from the remainder of the sheet. The sheet is removed, wherein there is constructed an integrated circuit package that has a two dimensional array of flexible leads.
Abstract:
본 발명은 외부 단자에 용착시키는 접합재에의 시인성을 향상시킨다. 반도체 소자와 상기 반도체 소자에 전기적으로 접속된 전극이 절연성을 갖는 밀봉재에 의해서 밀봉되고, 외부의 실장 기판과 접합재를 개재하여 접합되는 실장면 주위에 상기 전극을 노출시켜 이루어지는 반도체 장치로서, 상기 전극은 상기 실장면이 상기 접합재를 개재하여 상기 실장 기판에 접합된 상태에서, 상기 실장면을 둘러싼 측면측에서 상기 접합재를 시인할 수 있는 형상을 나타낸다. 밀봉재, 접합재, 블레이드, 금속 세선, 본딩 패드