Abstract:
An alphanumeric display includes a substrate that has top and bottom surfaces, a plurality of electrical contacts on the top surface, a plurality of light-emitting electronic devices mounted on the top surface, and a plurality of electrical pads on the bottom surface. The electrical contacts are connected to at least one light-emitting electronic device, and each of the light-emitting electronic devices is electrically connected with corresponding ones of the electrical contacts. The electrical pads are electrically connected to corresponding ones of the electrical contacts for communicating to the light-emitting electronic devices external sources of electrical power and control signals. The electrical pads on the bottom surface are arranged in a pattern to facilitate connections to the device using a conductive adhesive.
Abstract:
A down-light has a main body, a substrate, a plurality of LEDs, a reflector, a central boss, a central screw and peripheral screws. The main body has a mounting area. The substrate having LEDs is assembled in the mounting area. The reflector is attached to the main body with the substrate interposed therebetween, and reflects light emitted from the LEDs. The central boss is formed on the mounting area to correspond to a central part of the substrate. The central screw fixes the central part of the substrate to the central boss from the reflector side. Peripheral screws fix the substrate to the main body by pulling the reflector from the main body side.
Abstract:
Provided is a method of forming a fine pitch in a flexible printed circuit board (FPCB) having an increased adhesive property of wirings and an improved insulating property between the wirings. The method includes etching regions where wirings are to be formed on a base substrate; forming conductive layers on the etched regions; forming a photoresist film on a substrate between the etched regions; forming the wirings by forming the conductive layers on the etched regions to be higher than the substrate; and removing the photoresist film.
Abstract:
A packaging method comprises: forming a circuit board by forming a substantially continuous conductive layer on an insulating board and removing selected portions of the continuous conductive layer to define an electrically conductive trace; laser cutting the electrically conductive trace to define sub-traces electrically isolated from each other by a laser-cut gap formed by the laser cutting; and bonding a light emitting diode (LED) chip to the circuit board across or adjacent to the laser-cut gap, the bonding including operatively electrically connecting an electrode of the LED chip to one of the sub-traces without using an interposed submount. A semiconductor package comprises an LED chip flip-chip bonded to sub-traces of an electrically conductive trace of a circuit board, the sub-traces being electrically isolated from each other by a narrow gap of less than or about 100 microns.
Abstract:
A printed wiring board includes a substrate member, terminals and wiring pattern. The terminals are formed in a specific shape on the substrate member and arranged to be aligned in a specific arrangement direction on the substrate member. The wiring pattern is formed on the opposite side across the substrate member from a terminal portion where the terminals are formed, and a plurality of slits are formed extending in a direction perpendicular to the specific arrangement direction.
Abstract:
A power converter including a printed circuit board (PCB) having a plurality of heat conductive layers configured to sink heat generated by the power converter electronics. Each of these heat conductive layers are comprised of thermally conductive material configured as planar sheets, each of these heat conductive layers being coupled to at least one wire to sink heat therefrom, such as via a wire of an input cable and/or output cable. Advantageously, a more compact power converter is realized having improved power output while operating within safety guidelines.
Abstract:
An interposer chip in accordance includes an insulating layer, conductive patterns and a dummy pattern. The conductive patterns are formed on the insulating layer. The dummy pattern is formed on the insulating layer to suppress a bending of the insulating layer. Further, the dummy pattern can have first isolating grooves formed along peripherals of the conductive patterns to isolate the dummy pattern from the conductive patterns. Thus, the interposer chip is not vulnerable to being bent. Further, an electrical short between the conductive patterns through the dummy pattern caused by particles is substantially avoided.
Abstract:
An appliqué for forming a surface coating to a substrate is disclosed. The appliqué contains a sectioned metal foil that provides a large area electrical circuit for connecting electrical devices. The appliqué may provide additional functions including lightning strike protection. The substrate may be an aircraft surface.
Abstract:
An illumination assembly includes a compliant substrate comprising a first and second electrically conductive foil separated by an electrically insulating layer. The insulating layer includes a polymer material loaded with particles that enhance thermal conductivity of the insulating layer. A plurality of LED dies are disposed on the first conductive foil.
Abstract:
A power converter including a printed circuit board (PCB) having a plurality of heat conductive layers configured to sink heat generated by the power converter electronics. Each of these heat conductive layers are comprised of thermally conductive material configured as planar sheets, each of these heat conductive layers being coupled to at least one wire to sink heat therefrom, such as via a wire of an input cable and/or output cable. Advantageously, a more compact power converter is realized having improved power output while operating within safety guidelines.