摘要:
A method of manufacturing an electronic circuit assembly that includes a number of electrically interconnected flexible films, each flexible film having a flexible electrical wiring circuit. The electrical wiring circuits are interconnected between film layers and the film layers are adhered to a molded backing structure. A first flexible film is formed with a pattern of flexible electrical wiring circuits created on at least one surface thereof. The first flexible film has a passage that provides an electrical connection through the flexible film. A second flexible film is formed with a pattern of flexible electrical wiring circuits created on a least one surface thereof. The second flexible film has an electrical interconnect feature that connects with the electrical passage on the first film and electrically connects the first film with the second film. The first flexible film is overlaid juxtaposed the second flexible film so that the passage is aligned adjacent the electrical interconnect feature. The first and second flexible films are placed within an open mold. The mold is closed and a plastic material is injected within the mold adjacent at least one surface of the first and second flexible films. The molten plastic adheres to the first and second flexible films and forms an integral backing structure. The backing structure and first and second flexible films together form the circuit assembly.
摘要:
Method of efficiently refiow soldering one or more devices to a printed circuit board with a convective heating oven, each device having a plurality of plate supported electronic connecting pins that are to be soldered within respective mating openings of the printed circuit board for electronic connection, the method comprising: (i) placing a solder paste in each of the openings; (ii) assembling the device to the circuit board by positioning the plate of the device along, but spaced in relation to, the printed circuit board to define a planar space therebetween, with the pins extending into such openings and into the soldered paste to thereby form an assembly; and (iii) passing the assembly through the convective heating oven for a time period to melt the solder paste and form a solid connection upon removal of the convective heat, said passing being carried out by use of convective heat focusing features that guide the convective heat flow between the plate and board to enhance convective heating of the solder paste from both sides of the board.
摘要:
A flexible metallized polymer film cover provides environmental protection of electronic assemblies such as circuit card assemblies which are susceptible to external environmental factors which can impede functional performance and reduce reliability. The fully integrated cover provides this protection and also allows for circuit repair and rework in such a manner as to make cover removal and reseal economically attractive. The use of a metallized polymer film in the form of a two layer film, with two intimately bonded layers one being electrically insulative and the other metallic, provides environmental and electrical protection of the enclosed assembly. The variables of film materials and thicknesses allow for specific cover designs to be fabricated to meet various requirements for assembly protection. The flexible film nature of the cover allows for strict conformance to underlying devices and less dimension and weight for the assembly. The cover can also be easily and quickly removed from the assembly to allow repair of underlying devices. The cost of these films also makes replacement of the film cover attractive.
摘要:
A lighting system for an appliance is disclosed. In one embodiment, the lighting system includes a light shelf including a substantially planar light guide having a support member for releaseably coupling the light shelf to the appliance, a light injector coupled to a first end the light shelf, the light injector including a substrate having at least one light source disposed thereon and a housing for at least partially enclosing the at least one light source, wherein light emitted from the at least one light source is directed into the light guide, and an end piece coupled to a second end of the light shelf opposite the first end.
摘要:
Disclosed is an LED package holder for retaining and electrically connecting an LED package. The LED package holder includes a housing configured to hold an LED package and has at least one center opening defined therein. A connector shroud is integrally formed with the housing and has a cavity for receiving a connector operable to supply power to the LED package. Two contact features are retained by the housing, and each contact feature has an inner contact and an outer contact. Each inner contact engages an LED electric terminal of the LED package. Each outer contact extends into the connector shroud so as to engage connector terminals when a connector is inserted into the connector shroud.
摘要:
An LED package holder for holding and electrically connecting an LED package. The LED package holder includes a housing having an aperture defined therein and portions defining a recess. A plurality of contact features are retained by the housing and extend into the aperture. Each contact feature has an exposed portion configured to engage an LED electric terminal of an LED package that is received within the aperture. A heat sink, also retained by the housing, is at least partially located within the recess of the housing and configured to draw heat away from the LED package received within the aperture.
摘要:
An assembly that includes two or more microelectronic modules in a self-sustaining structure that is adapted to be installed in a housing. The microelectronic modules are affixed to supports that are attached to ribs and arranged in parallel-spaced relationship. When the assembly is received in a housing, the ribs engage the inner wall of the housing to securely position the assembly. Also, the ribs space the microelectronic modules apart from the housing to facilitate coolant gas flow through the housing and thereby improve thermal dissipation during operation.
摘要:
The present invention provides a system for conducting heat away from an electrical component wherein the system has an elastically deformable member providing thermal communication with an electrical component. The system for conducting heat energy in an electronic assembly includes an electrical component, an elastically deformable member, and a housing. The elastically deformable member is placed in a compressed position between the electrical component and the housing such that the elastically deformable member is fixed into an assembled location. The elastically deformable member conducts heat energy away from the electrical component into the housing where it is dissipated into the environment. Since the compressed position fixes the location of the elastically deformable member, the system does not require a mechanical fastening to the electrical component thereby reducing thermo-mechanical fatigue. The elastically deformable member is made of a metal material allowing it to easily conduct the heat energy.
摘要:
A microelectronic package includes a flexible substrate and is adapted to be installed onto a support structure, which is preferably a nonplanar support structure. The package includes a frame that is affixed to a perimeter of a first portion of the flexible substrate and forms the substrate into a shape corresponding to the support structure. The package is installed so that the obverse surface of the flexible substrate is intimately against the support structure, so that the support structure not only reinforces the package to prevent damage, but also extracts heat generated during operation of the electronics.
摘要:
There is disclosed herein an apparatus for routing electrical signals in an engine having n cylinders and an intake manifold, one embodiment of which comprises: (1) a generally rigid housing generally conforming in shape with and being removably attachable to a top surface of the intake manifold; (2) at least n carrier members attached to the housing and extending outward therefrom, wherein each carrier member is arranged in general proximity with a respective cylinder; (3) a plurality of conductive circuit traces arranged on or within an underside or other surface of the housing and on or within each carrier member; and (4) at least one input/output connector for connection to at least one of an external signal source, an external power source, an external signal destination, and an external power destination, wherein each input/output connector is attached to the housing and is electrically connected to at least one of the circuit traces. Each circuit trace carried by each carrier member terminates in a termination electrically connectable with an electrical engine element, such as an ignition coil, an electronic fuel injector, a spark plug, and/or a glow plug.