Abstract:
A flexible circuit board is provided, comprising a flexible substrate having an upper surface and a lower surface and a plurality of electrically conductive pads overlaid on an upper surface of the flexible substrate. Front ends of the electrically conductive pads do not reach a front edge of the flexible substrate and are separated from the front edge of the flexible substrate by a distance.
Abstract:
A manufacturing process for encapsulation and cutting memory cards, embodying a full-wafer circuit board substrate, whereon is distributed a plurality of sets of a number of chip modules assembled from passive component members, flash memory modules and control chips. A mold is then used to carry out full-wafer compression molding to seal the chip modules and passive component members onto the circuit board substrate, thereby forming a plurality of sets of memory cards having complete electric functionality. Grooves are formed between neighboring memory cards when carrying out the compression molding process, which enable direct chamfering of edges and corners of each of the memory cards after cutting, thereby eliminating the need for further finishing.
Abstract:
A circuit carrier includes a substrate with two oppositely arranged areas. The terminal contacts of a flat connector strip are arranged in the edge regions of the areas. A through contact is arranged under at least one of the terminal contacts with concealed electrical connection to the rear side of the terminal contact and the top side of the terminal contact exhibits an undisturbed morphology and planar surface.
Abstract:
Disclosed are IC package structures having stair stepped layers and which have no plated vias. Such structures can be fabricated either as discrete packages or as strips such as might be beneficial in for use with memory devices wherein critical or high speed signals can be routed along the length of the multi-chip strip package without having to have the signals ascend and descend from the interconnection substrate on which the assembly is mounted to the IC package termination and back as the signal transmits between devices.
Abstract:
A transmission board (10) comprises a frame body (30) and a surface board (20) supported by the frame body (30) and having a transmission circuit. The frame body (30) has plugging edges (33, 34) that project from the edges of the surface board (20) for guiding the terminals of mating connectors to connection pads on the surface board (20). The plugging edges have guiding slopes 33A and 33B, and 34A and 34B. At least the plugging edges of the frame body (30) are made of a metal or resin molding.
Abstract:
A surface mountable electronic device includes a body with a first surface for mounting the device. The first surface has recessed portions therein. Electrical contacts are provided in the first surface. The electrical contacts include first portions that form at least a portion of at least one inner surface of said recessed portions.
Abstract:
The present invention relates to a tool, and method of its use, that puts a pair of bevels onto an edge of a printed circuit board (PCB) so that the PCB can be inserted into an expansion slot of a computer. The tool has a bevel wheel, preferably with a bi-laterally symmetrical angle channel shape, that is connected to a carriage. The bevel wheel rolls along the carriage while the bevel wheel is pressed onto the edge of the PCB so as to form the pair of bevels on the edge of the PCB. No material is removed from the PCB while forming the pair of bevels. The bevel wheel is forced upon the edge using a piston that monitors and regulates the pressure applied to the edge of the PCB in order to achieve a preferred height and angular orientation of the pair of bevels.
Abstract:
A method for depositing a solder layer or solder bump on a sloped surface. The method includes etching a sloped surface on a planar semiconductor substrate, depositing a solder-wettable layer on the sloped surface, masking the wettabler layer with a coating layer to control the position of the solder deposition, and using an organic film to prevent the solder from being deposited at regions not above either the wettable layer or the coating layer. Also, a semiconductor device structure on which a solder layer or solder bump is formed exclusively on a sloped surface.
Abstract:
A circuit component package of the present invention includes a mounting member including a substrate and a wiring pattern provided on the substrate, a circuit component including a component body and an external electrode provided at an end of the component body, the circuit component being arranged on the mounting member, and a conductive material that electrically connects the external electrode with the wiring pattern. In the circuit component, the component body is shaped so that a first portion of the component body on which the external electrode is provided is thinner than a second portion of the component body, the second portion being a portion on which the external electrode is not provided, and further, the external electrode is arranged in a region on a side on which the component body is positioned with respect to a reference plane containing a predetermined surface of the component body. The circuit component is arranged on the mounting member so that the component body is in contact with the mounting member. The predetermined surface of the component body is a surface of the component body that is to be opposed to the mounting member when the circuit component is mounted on the mounting member.
Abstract:
A three-dimensional interconnect system is disclosed. The interconnect system electrically connects electrical devices that are disposed on different physical planes. The interconnect system includes a plurality of contiguously interconnected electrically conductive droplets such as solder ball droplets produced by a print-on-demand solder jet system. An interconnect is formed by repeatedly ejecting the conductive droplets along a predetermined path between components to be connected. Each ejected droplet is disposed adjacent to another ejected droplet to form a contiguously linked chain of droplets that bridge a physical gap between the components. A non-conductive coating can be deposited on the interconnect to protect the interconnect from damage and to encase the interconnect. The electrical resistance of the interconnect can be reduced by reflowing the droplets that form the interconnect, whereby the coating that encses the interconnect is operative to maintain the shape of the interconnect after reflow.