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 circuit board, which increases the contact area between an IC and a printed circuit board, thus increasing the degree of adhesion, is disclosed. The printed circuit board includes: an insulation layer which includes a first circuit pattern, including at least one via land, embedded in the upper surface of the insulation layer to be flush with the upper surface, and a second circuit pattern formed in the lower surface of the insulation layer to be flush with the lower surface; a solder resist layer formed on the insulation layer; a via hole and a bump integrally formed on the second circuit pattern through the via hole and the via land such that it protrudes from the insulation layer to be higher than the solder resist layer.
Abstract:
A method of producing a land grid array (LGA) interposer structure, including an electrically insulating carrier plane, and mounting at least one interposer on a first surface of the carrier plane. The interposer possesses a hemi-toroidal configuration in transverse cross-section and is constituted of a dielectric elastomeric material. The method includes arranging a plurality of electrically conductive elements about the surface of the at least one hemi-toroidal interposer and extending 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 circuit module includes a plurality of electronic components including at least one heat-generating electronic component and constituting an electric circuit are spaced from each other on a circuit board. Regions of one or both sides of the circuit board, including regions around the plurality of electronic components, are covered with a heat-dissipating member. A surface of the heat-dissipating member facing the circuit board includes irregularities. An end surface of a protrusion in the facing surface of the heat-dissipating member is in contact with a circuit board surface between the electronic components, directly or with a heat-dissipating sheet interposed therebetween. A wall surface of a recess in the facing surface of the heat-dissipating member is in surface-contact with the heat-generating electronic component within the recess, directly or with the heat-dissipating sheet interposed therebetween. Thus, heat from the heat-generating electronic component and heat from the circuit board heated by the heat from the heat-generating electronic component are dissipated outside through the heat-dissipating member.
Abstract:
Circuit elements including a plurality of semiconductor devices and passive elements embedded in an insulating resin film are formed on a metal substrate having a surface roughness Ra of 0.3 to 10 μm. This produces an anchoring effect occurs between the substrate and the insulating film, thereby improving the adhesiveness between the substrate and the insulating resin film.
Abstract:
A widely applicable and low cost module substrate with a high accuracy, reliability and heat-radiation structure. A light source includes: a heat radiation substrate; an insulating layer formed in some regions in an upper surface of the substrate; a wiring layer having wiring patterns, the wiring layer being arranged on the insulating layer; and a plurality of LED elements connected to the wiring layer. Moreover, the light source includes: a heat radiation substrate; an insulating layer arranged in some regions in an upper surface of the substrate; a wiring layer having wiring patterns, the wiring layer being arranged on the insulating layer; and LED elements connected to the wiring layer, wherein the insulating layer has two layers of a resin layer arranged in the wiring layer side and an adhesive layer arranged in the heat radiation substrate side.
Abstract:
Memory systems and methods of forming memory modules. In one embodiment, a computer memory system includes a substantially tubular frame with an elongate card edge extending along the frame. A flexible circuit comprising a flexible substrate, a plurality of memory chips affixed to the flexible substrate, and a plurality of electrical terminals interconnected with the memory chips, is secured along a perimeter of the tubular frame with the electrical terminals arranged along the card edge.
Abstract:
Disclosed herein is an electronic component-embedded printed circuit board, including: a metal substrate including an anodic oxide film formed over the entire surface thereof; two electronic components disposed in a cavity formed in the metal substrate in two stages; an insulation layer formed on both sides of the metal substrate to bury the electronic components disposed in the cavity; and circuit layers including vias connected with connecting terminals of the electronic components and formed on the exposed surfaces of the insulation layer. The electronic component-embedded printed circuit board is advantageous in that its radiation performance of radiating the heat generated from an electronic component can be improved, and its production cost can be reduced, because a metal substrate is used instead of a conventional insulating material.
Abstract:
A method of manufacturing a laminate electronic device is disclosed. One embodiment provides a carrier, the carrier defining a first main surface and a second main surface opposite to the first main surface. The carrier has a recess pattern formed in the first main surface. A first semiconductor chip is attached on one of the first and second main surface. A first insulating layer overlying the main surface of the carrier on which the first semiconductor chip is attached and the first semiconductor chip is formed. The carrier is then separated into a plurality of parts along the recess pattern.
Abstract:
A multi-layer printed circuit board and a method of manufacturing the multi-layer printed circuit board using a metal substrate as a core member and having an electronic component embedded in the metal substrate, the method including anodizing the metal substrate such that an anodic oxide layer is formed on upper and lower sides of the metal substrate, respectively; forming an inner layer circuit on upper and lower anodic oxide layers, respectively; etching the metal substrate to form a cavity in correspondence with a position where the electronic component is to be embedded; mounting the electronic component in the cavity with a chip bond adhesive; and forming an outer layer circuit on upper and lower sides of the metal substrate, respectively, such that a multi-layer circuit is formed.