Abstract:
A land grid array (LGA) interposer structure, including an electrically insulating carrier plane, and at least one interposer mounted on a first surface of said carrier plane. The interposer possesses a hemi-toroidal configuration in transverse cross-section and is constituted of a dielectric elastomeric material. A plurality of electrically-conductive elements are arranged about the surface of the at least one hemi-toroidal interposer and extend radically inwardly and downwardly from an uppermost end thereof into electrical contact with at least one component located on an opposite side of the electrically insulating carrier plane. Provided is also a method of producing the land grid array interposer structure.
Abstract:
A method of producing a land grid array (LGA) interposer structure, including an electrically insulating carrier plane, and at least one interposer mounted on a first surface of said carrier plane. The interposer possesses a hemi-toroidal configuration in transverse cross-section and is constituted of a dielectric elastomeric material. A plurality of electrically-conductive elements are arranged about the surface of the at least one hemi-toroidal interposer and extend radically inwardly and downwardly from an uppermost end thereof into electrical contact with at least one component located on an opposite side of the electrically insulating carrier plane.
Abstract:
A printed-wiring board includes: a board made of insulator; a wiring pattern to transfer an electric signal which is made of patterned metallic conductor and formed on at least one of a main surface and a rear surface of the board; and an electric power layer formed on the rear surface of the board and/or in the board. The electric power layer includes a mechanism to increase and decrease a capacitance and an inductance thereof.
Abstract:
A method of producing a land grid array (LGA) interposer structure, including an electrically insulating carrier plane, and at least one interposer mounted on a first surface of said carrier plane. The interposer possesses a hemi-toroidal configuration in transverse cross-section and is constituted of a dielectric elastomeric material. A plurality of electrically-conductive elements are arranged about the surface of the at least one hemi-toroidal interposer and extend radically inwardly and downwardly from an uppermost end thereof into electrical contact with at least one component located on an opposite side of the electrically insulating carrier plane.
Abstract:
A resin-sealed semiconductor device includes a metal frame, an electronic substrate, an adhesive agent, a molded resin, and a bonding agent. The electronic substrate includes a first surface having a circuit element wiring part, a second surface facing the metal frame, and a side surface arranged approximately perpendicularly to the first surface and the second surface. The adhesive agent is disposed between the metal frame and the second surface to cover the second surface and a portion of the side surface adjacent to the second surface. The molded resin covers the metal frame and the electronic substrate, and holds the other portion of the side surface adjacent to the first surface. The bonding agent is disposed between the circuit element wiring part and the molded resin so that the molded resin holds the circuit element wiring part through the bonding agent.
Abstract:
A rigid-flex circuit board system that can be manufactured using less expensive and more reliable rigid circuit board methods and equipment, and can maintain rigidity and dimensional stability until the time when it is first desired to flex.
Abstract:
A land grid array (LGA) interposer structure, including an electrically insulating carrier plane, and at least one interposer mounted on a first surface of said carrier plane. The interposer possesses a hemi-toroidal configuration in transverse cross-section and is constituted of a dielectric elastomeric material. A plurality of electrically-conductive elements are arranged about the surface of the at least one hemi-toroidal interposer and extend radically inwardly and downwardly from an uppermost end thereof into electrical contact with at least one component located on an opposite side of the electrically insulating carrier plane. Provided is also a method of producing the land grid array interposer structure.
Abstract:
A board interconnection structure having a first printed wiring board in which a first conductive circuit is arranged on a first insulating layer, the first conductive circuit having, on an end portion thereof, a first connection terminal in which an upper surface width is narrower than a bottom surface width; a second printed wiring board in which a second conductive layer having a second connection terminal is arranged on a second insulating layer; and a connection layer that forms fillets along longitudinal side surfaces of the first connection terminal, and interconnects the first connection terminal and the second connection terminal. The first connection terminal may have a projection portion.
Abstract:
In a package mounting structure for mounting a package on a case, wherein the package internally incorporates at least one of a high-frequency transistor, MIC and MMIC used in the microwave to millimeter-wave band, and a base thereof is formed of metal and serves as ground, an electrically conductive sheet having excellent thermal conductivity and exhibiting restorability and having a size identical with that of the base of the package is laid on the case at a package-bearing location, the package and sheet are fastened together by two or more screws, and the sheet is mounted on the case while it is pressed by a pressing force of 10 N/cm2 or greater owing to fastening.
Abstract translation:在用于将封装安装在外壳上的封装安装结构中,其中封装内部包含微波至毫米波段使用的高频晶体管,MIC和MMIC中的至少一个,其基极由金属和 作为地面,具有优异的导热性并具有恢复性并且具有与包装的基座的尺寸相同的尺寸的导电片被放置在封装承载位置的壳体上,封装和片材通过两个或 更多的螺钉,并且当由于紧固而被按压10N / cm 2以上的压力时,该片被安装在外壳上。
Abstract:
A printed circuit is made by laser projection patterning a metal panel of a substrate, laminating a dielectric layer on the metal panel, laser irradiating the substrate to form vias in the substrate, laser activating a seed coat on the substrate, washing the seed coat from an unpatterned portion of the substrate, forming a patterned build-up layer on the substrate, and etching away a metal plating forming metal protrusions.