Abstract:
An electronic device is mounted on a wiring board, which includes: a substrate having through holes, and lands extending on surfaces of the substrate and adjacent to openings of the through holes. Further, at least one coating layer is provided, which coats at least one part of an outer peripheral region of the at least one land, in order to cause that the at least one part is separated from a lead-less solder, thereby preventing any peel of the land from the surface of the substrate.
Abstract:
Interconnect assemblies and methods for forming and using them. In one example of the invention, an interconnect assembly comprises a substrate, a resilient contact element and a stop structure. The resilient contact element is disposed on the substrate and has at least a portion thereof which is capable of moving to a first position, which is defined by the stop structure, in which the resilient contact element is in mechanical and electrical contact with another contact element. In another example of the invention, a stop structure is disposed on a first substrate with a first contact element, and this stop structure defines a first position of a resilient contact element, disposed on a second substrate, in which the resilient contact element is in mechanical and electrical contact with the first contact element. Other aspects of the invention include methods of forming the stop structure and using the structure to perform testing of integrated circuits, including for example a semiconductor wafer of integrated circuits.
Abstract:
In a camera according to the present invention, an edge portion of a lens barrel unit is projected and arranged from a front cover. The lens barrel unit is covered with a front cover cylindrical member connected to the front cover, and a front exposed portion of the front cover cylindrical member is covered with an exterior cylindrical member as a detachable (before-attaching) metal cylindrical member. The exterior cylindrical member is positioned and is fixed by an stop claw on the front-cover side. A C-shaped stop portion cover having flexibility is made flexible and is attached around the stop claw portion, and is fixed by a screw. The restriction on design is reduced on the appearance for covering the lens barrel unit of the camera, and a camera exterior portion can be made of metal.
Abstract:
A plurality of jacks are a video signal jack, a left audio signal jack, and a right audio signal jack from left to right. Jack fixing protrusions are formed on a surface of each jack which surface is attached to a circuit board. The jack fixing protrusions are arranged differently among the respective jacks, and can be inserted only into attachment portions of the circuit board corresponding to the respective jacks. Namely, insertion of the respective jacks into incorrect attachment portions is made physically impossible, and erroneous insertion of the jacks can be prevented.
Abstract:
A package including a package substrate, a die-substrate assembly including a substrate including a plurality of layers including a layer having a mesh to stiffen the substrate adapted to mount one or more dice, one or more dice mounted on the substrate and a molding compound to attach the substrate to the package substrate.
Abstract:
A semiconductor device including a substrate, a semiconductor element mounted on the substrate and a stiffener attached via an adhesive to a surface of the substrate opposite a surface thereof on which the semiconductor element is mounted. The adhesive has a coefficient of thermal expansion smaller than that of the substrate and that of the stiffener, and the modulus of longitudinal elasticity of the adhesive is equal to or larger than 10 GPa. Otherwise, the adhesive has a coefficient of thermal expansion larger than that of the substrate and that of the stiffener, and the modulus of longitudinal elasticity of the adhesive is equal to or smaller than 10 GPa. The height of the stiffener is less than that of the external terminals.
Abstract:
A semiconductor package has first and second surfaces and has a plurality of pedestals disposed on the first surface, for keeping a certain height of the semiconductor package after mounting.
Abstract:
A standoff device provides predetermined control of a standoff distance between electrical components mounted together with opposing conductive grid array patterns. In an embodiment, a predetermined electrical function is provided by the device to at least one of the electrical components. The standoff device comprises a plurality of rigid one-piece standoff pins which, in an embodiment, contains one or more stops which buttress against the electrical components to serve as a distancing control structure. In an embodiment, the standoff device is integral with one of the electrical components.
Abstract:
In a camera according to the present invention, an edge portion of a lens barrel unit is projected and arranged from a front cover. The lens barrel unit is covered with a front cover cylindrical member connected to the front cover, and a front exposed portion of the front cover cylindrical member is covered with an exterior cylindrical member as a detachable (before-attaching) metal cylindrical member. The exterior cylindrical member is positioned and is fixed by an stop claw on the front-cover side. A C-shaped stop portion cover having flexibility is made flexible and is attached around the stop claw portion, and is fixed by a screw. The restriction on design is reduced on the appearance for covering the lens barrel unit of the camera, and a camera exterior portion can be made of metal.
Abstract:
Terminals (11, 13) for electrical connection respectively have front end portions (11b, 13b) to be joined to a wiring board (20) with solder and base end portions (11a, 13a) drawn outside from a cover (7) made of heat-expanding material. In order for the base end portions to absorb stress countering the external force received from the cover subjected to thermal expansion due to the heat generated by an electromagnetic coil (5) by the deflection deformation of the intermediate portions (11c, 13c) of the terminals positioned closer to the cover than the wiring board 20 with the relay device mounted on the wiring board, the terminals are formed with a predetermined length of L′ in the extending direction of the terminals so that the length required for necessary flexibility is secured for the intermediate portions.