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Chang Hwa Chung

Chang Hwa Chung, Hong Kong HK

Patent application numberDescriptionPublished
20090189269Electronic Circuit Package - A electronic circuit package having a flexible substrate with metals layers on one or more of its surfaces forming a wiring pattern and/or surface mount bonding pads. Passive electronic components are integrated onto component packages that are mounted to the flexible substrate and electrically connected with the wiring pattern or bonding pad. An active electronic device is mounted on the flexible substrate or bonding pad.07-30-2009
20090243046Pulse-Laser Bonding Method for Through-Silicon-Via Based Stacking of Electronic Components - There is described a method of forming a through-silicon-via to form an interconnect between two stacked semiconductor components using pulsed laser energy. A hole is formed in each component, and each hole is filled with a plug formed of a first metal. One component is then stacked on another component such that the holes are in alignment, and a pulse of laser energy is applied to form a bond between the metal plugs.10-01-2009
20090294916BONDING METHOD FOR THROUGH-SILICON-VIA BASED 3D WAFER STACKING - There is described a hybrid bonding method for through-silicon-via based wafer stacking. Patterned adhesive layers are provided to join together adjacent wafers in the stack, while solder bondng is used to electrically connect the vias. The adhesive layers are patterned to enable outgassing and to provide stress relief.12-03-2009
20090294931Methods of Making an Electronic Component Package and Semiconductor Chip Packages - An electronic component package having an EMI shielded space is disclosed. The package comprises a substrate having an electronic component located on its surface and a conductive enclosure having a top and downwardly extending sides enclosing the component and defining a shielded space. A vent opening is provided through the substrate and is located in the shielded space for venting the shielded space. A second vent opening may be provided in the top of the conductive enclosure.12-03-2009
20100246141ELECTRONIC PACKAGE AND METHOD OF FABRICATION THEREOF - One aspect of the present invention provides an electronic package, comprising at least a first module and a second module arranged on top of the first module, the modules together in the form of a module stack, wherein the first and second modules are adhesively connected together, each module includes a substrate layer having at least one metal layer, at least one die and a plastic(s) package molding compound layer molded over said die or dice, in each module the die or dice are bonded on said substrate layer via the metal layer, a plurality of channels formed generally vertically acting as vias to connect the metal layers and arranged adjacent to the die or dice in at least one of the modules, some or all the channels provided with an inner surface coated with a conductive material layer or filled with a conductive material for electrical connection whereby the dice are electrically connected together, and means serving as an intermediary for providing electrical, mechanical and thermal connectivity, communication externally and connected to the channels.09-30-2010
20110037349APPARATUS AND METHOD FOR GENERATING ELECTRICITY USING PIEZOELECTRIC MATERIAL - An apparatus and method for generating electricity using piezoelectric material. The apparatus comprises a first elongate member and a second elongate member that are joining together at first and second points which are spaced apart from each other. The second elongate member comprises a piezoelectric element, or has a piezoelectric element mounted thereon. When pressure is applied to the first elongate member, the second elongate member is stretched and the stretching force is applied to the piezoelectric element. This generates electricity. A similar arrangement with a third elongate member may be provided on the other side of the second elongate member. The apparatus may be placed in a shoe or underneath a floor, so that the variation in pressure caused by walking may be used in generate electricity.02-17-2011

Patent applications by Chang Hwa Chung, Hong Kong HK

Chang Hwa Chung, Shatin HK

Patent application numberDescriptionPublished
20090211353PIEZOELECTRIC MODULE FOR ENERGY HARVESTING, SUCH AS IN A TIRE PRESSURE MONITORING SYSTEM - Subject matter disclosed herein may relate to energy harvesting piezoelectric modules as may be used, for example, in power supplies for tire pressure monitoring systems.08-27-2009
20090293604MULTI-CHIP PACKAGE - Subject matter disclosed herein may relate to packaging for multi-chip semiconductor devices as may be used, for example, in tire pressure monitoring systems.12-03-2009
20090294974BONDING METHOD FOR THROUGH-SILICON-VIA BASED 3D WAFER STACKING - There is described a bonding method for through-silicon-via bonding of a wafer stack in which the wafers are formed with through-silicon-vias and lateral microchannels that are filled with solder. To fill the vias and channels the wafer stack is placed in a soldering chamber and molten solder is drawn through the vias and channels by vacuum. The wafers are held together by layers of adhesive during the assembly of the wafer stack. Means are provided for local reheating of the solder after it has cooled to soften the solder to enable it to be removed from the soldering chamber.12-03-2009
20100247879SUBSTRATE WARPAGE-REDUCING STRUCTURE - The subject matter disclosed herein relates to methods to reduce warpage of a substrate.09-30-2010

Chang Hwa Chung, New Territories HK

Patent application numberDescriptionPublished
20100123241SEMICONDUCTOR CHIP WITH THROUGH-SILICON-VIA AND SIDEWALL PAD - Subject matter disclosed herein may relate to packaging for multi-chip semiconductor devices as may be used, for example, in flash memory devices. In an example embodiment, a semiconductor chip may comprise a through-silicon via and a sidewall pad.05-20-2010

Chang Hwa Chung, Hong Kong CN

Patent application numberDescriptionPublished
20090115051Electronic Circuit Package - An electronic circuit package has a thin-film circuit integrated with the ceramic substrate. The thin-film circuit includes at least two passive circuit elements joined by an integrated electrical interconnect. At least one active power electronic component mounted on the ceramic substrate and is electrically connected with the integrated thin-film circuit.05-07-2009

Patent applications by Chang Hwa Chung, Hong Kong CN

Chang Hwa Chung, Hong Kong Sar CN

Patent application numberDescriptionPublished
20090088939Method and apparatus for identification of wheels of a vehicle and a vehicle comprising same - A method of determining the location information of a plurality of wheels mounted on a vehicle by obtaining a relationship between the lateral location of a wheel and the polarity of a transverse acceleration transmitted by an accelerometer of a wheel in response to a lateral turn of the vehicle in a direction of a lateral side of the vehicle and determining the lateral location of a wheel with reference to the polarity of the transverse acceleration signal transmitted by the accelerometer of the wheel upon the vehicle undergoing a lateral turn.04-02-2009