39859 results about "Heat spreader" patented technology

A bendable light emitting diode (LED) array in accordance with the present invention includes heat spreaders, dielectric material disposed above each heat spreader, and a bendable electrical interconnection layer disposed above these heat spreaders and electrically insulated from these heat spreaders by the dielectric material. At least one via passes through the dielectric material above each heat spreader, and at least one LED die is disposed above each via. The bendable electrical interconnection layer may be a lead frame comprising metal pathways that electrically interconnect some or all LED dice in series, in parallel, in anti-parallel, or in some combination of these configurations. Each via contains a thermally conductive material in thermal contact with the corresponding heat spreader below it and in thermal contact with the corresponding LED die above it. The LED dice may be thermally and electrically coupled to submounts disposed above corresponding heat spreaders in some embodiments.

A system and method for measuring thermal distributions of an electronic device during operation is disclosed. The system includes an electronic device, a heat sink adjacent to the electronic device and an electrical-insulating layer disposed on the electronic device so as to separate the electronic device and the heat sink. The system further includes a plurality of thermal sensors located on the electrical-insulating layer, each of the plurality of thermal sensors in a different location. The plurality of thermal sensors is located within one or more thin film circuit layers disposed adjacent to the electrical insulating layer. The system further includes a module for receiving thermal information from the plurality of thermal sensors during operation of the electronic device. The system further includes a processor coupled to the module for generating a thermal distribution of the electronic device based on the thermal information received from the plurality of thermal sensors.

The present invention relates to a system for managing the heat from a heat source like an electronic component. More particularly, the present invention relates to a system effective for dissipating the heat generated by an electronic component using a thermal management system that includes a thermal interface formed from a flexible graphite sheet and/or a heat sink formed from a graphite article.

A medical procedure utilizes a high-intensity focused ultrasound instrument having an applicator surface, a liquid-containing bolus or expandable chamber acting as a heat sink, and a source of ultrasonic vibrations, the applicator surface being a surface of a flexible wall of the bolus, the source of ultrasonic vibrations being in operative contact with the bolus. The applicator surface is placed in contact with an organ surface of a patient, the source is energized to produce ultrasonic vibrations focused at a predetermined focal region inside the organ, and a temperature of liquid in the bolus is controlled while the applicator surface is in contact with the organ surface to control temperature elevation in tissues of the organ between the focal region and the organ surface to necrose the tissues to within a desired distance from the organ surface.

A method of treating a brain disorder by heat transfer from brain tissue comprising the steps of surgically cutting a heat transfer aperture into a patient's skull, thereby exposing a predetermined portion of patient's brain; surgically implanting into said heat transfer aperture a heat pump having one or more electrical sensor elements and one or more temperature sensor elements; surgically implanting a heat transfer management unit in a body cavity of said patient such that a micro controller of the heat transfer management unit is connected to one or more activity sensor elements and one or more temperature sensor elements contacting brain tissue and connecting the heat transfer management unit to said heat pump via a lead bundle. Optionally, the heat transfer unit may be located external to the patient's body. Responsive to signals from one or more activity or temperature sensor elements, mathematical algorithms of the heat transfer management unit determine abnormal brain activity, causing the heat pump to remove heat from the brain tissue into a heat sink, thereby cooling the predetermined portion of the patient's brain. This technique utilizes acute hypothermia by means of a Peltier cooler or similar device to cool the brain temperature to reduce or prevent seizure initiation and/or propagation. The method may be used in association with brain stimulation and/or drug application to acutely avoid the occurrence of a seizure episode.

A light emitting diode (LED) bulb includes a heat sink, a circuit layer having two opposite sides, multiple LEDs mounted on one side and an electrical insulating layer connected between the opposite side and the heat sink. Heat generated by the LEDs is conducted to the heat sink through the circuit layer and the electrical insulting layer and is dissipated quickly. Further, a fan can be mounted on the fins to dissipate heat from the heat sink more quickly. Therefore, the LED bulb has good heat dissipating efficiency.

A light-emitting diode (LED) includes a heat sink (10) having a cross section along an axial direction thereof being U-shaped. The heat sink includes a substrate (102) and a sidewall (11) extending from an outer periphery of the substrate. A circuit board (40) is received in the heat sink and arranged on the substrate. At least one LED (30) is arranged on and electrically connected to the circuit board and thermally connected with the substrate of the heat sink. A plurality of fins (100) extend outwardly from an outer surface (110) of the sidewall of the heat sink. Each fin has a plurality of branches (100a, 100b) being connected together at the outer surface of the sidewall and being spaced from each other at outer-peripheries thereof.

A mixed-signal, multilayer printed wiring board fabricated in a single lamination step is described. The PWB includes one or more radio frequency (RF) interconnects between different circuit layers on different circuit boards which make up the PWB. The PWB includes a number of unit cells with radiating elements and an RF cage disposed around each unit cell to isolate the unit cell. A plurality of flip-chip circuits are disposed on an external surface of the PWB and a heat sink can be disposed over the flip chip components.

A lighting device comprises a heat sink, a housing mounted to and/or thermally coupled to the heat sink, a basket assembly attached to the housing, a solid state light emitter thermally coupled to the heat sink, and a baffle assembly attached to the housing. Also, a lighting device comprising a basket assembly and a baffle assembly. In some embodiments, the basket assembly comprises a first member defining a first opening, a second member, a space between the first and second members, and lenses in the opening and in the space. In some embodiments, the heat sink extends farther in a first direction in a first plane than a largest dimension of the housing in any plane which is parallel to the first plane. In some embodiments, at least one additional component (e.g., a power supply module or a junction box) is in contact with the heat sink element.

A method is for making at least one semiconductor device including providing a sacrificial growth substrate of Lithium Aluminate (LiAlO₂); forming at least one semiconductor layer including a Group III nitride adjacent the sacrificial growth substrate; attaching a mounting substrate adjacent the at least one semiconductor layer opposite the sacrificial growth substrate; and removing the sacrificial growth substrate. The method may further include adding at least one contact onto a surface of the at least one semiconductor layer opposite the mounting substrate, and dividing the mounting substrate and at least one semiconductor layer into a plurality of individual semiconductor devices. To make the final devices, the method may further include bonding the mounting substrate of each individual semiconductor device to a heat sink. The step of removing the sacrificial substrate may include wet etching the sacrificial growth substrate.

A thermally-conductive interface for conductively cooling a heat-generating electronic component having an associated thermal dissipation member such as a heat sink. The interface is formed as a self-supporting layer of a thermally-conductive material which is form-stable at normal room temperature in a first phase and substantially conformable in a second phase to the interface surfaces of the electronic component and thermal dissipation member. The material has a transition temperature from the first phase to the second phase which is within the operating temperature range of the electronic component.

A grounding spring for electromagnetic interference (EMI) suppression is interposed between a heat sink and a printed circuit board (PCB). The grounding spring comprises a conductive material having an opening formed at its base through which the heat sink makes thermal contact with an electronic module mounted on the PCB. The base makes electrical contact with a peripheral surface of the heat sink, and multiple-jointed spring fingers extend from the base to make electrical contact with conductive pads on the PCB. During compression, the movement of each spring finger's tip is substantially limited to the z-axis. Accordingly, the final installed location of the tip can be precisely controlled even when the grounding spring must accommodate a wide variety of installed heights of the heat sink relative to the PCB. Preferably, the spring fingers terminate with a concave tip that is less susceptible to sliding off the conductive pads.

Methods and apparatuses are provided for cooling semiconductor substrates prior to handling. In one embodiment, a substrate and support structure combination is lifted after high temperature processing to a cold wall of a thermal processing chamber, which acts as a heat sink. Conductive heat transfer across a small gap from the substrate to the heat sink speeds wafer cooling prior to handling the wafer (e.g., with a robot). In another embodiment, a separate plate is kept cool within a pocket during processing, and is moved close to the substrate and support after processing. In yet another embodiment, a cooling station between a processing chamber and a storage cassette includes two movable cold plates, which are movable to positions closely spaced on either side of the wafer.

Systems and methods are described for integrated cooling system. A method includes: circulating a liquid inside a flexible multi-layer tape; and transporting heat between a heat source that is coupled to the flexible multi-layer tape and a heat sink that is coupled to the flexible multi-layer tape. A method includes installing a flexible multi-layer tape in an electrical system, wherein the flexible multi-layer tape includes a top layer; an intermediate, layer coupled to the top layer; and a bottom layer coupled to the intermediate layer, the intermediate layer defining a closed loop circuit for a circulating fluid. An apparatus includes a flexible multi-layer tape, including: a top layer; an intermediate layer coupled to the top layer; and a bottom layer coupled to the intermediate layer, wherein the intermediate layer defines a closed loop circuit for a circulating fluid.

A heat sink assembly for an electronic device or a heat generating device(s) is constructed from an ultra-thin graphite layer. The ultra-thin graphite layer exhibits thermal conductivity which is anisotropic in nature and is greater than 500 W/m° C. in at least one plane and comprises at least a graphene layer. The ultra-thin graphite layer is structurally supported by a layer comprising at least one of a metal, a polymeric resin, a ceramic, and a mixture thereof, which is disposed on at least one surface of the graphite layer.

An LED lamp may be made with a heat sink optic. The lamp has a base having a first electrical contact and a second electrical contact for receiving current. At least one LED is mounted on a thermally conductive support; that supports electrical connections for the LED and provides thermal conduction of heat from the LED to the optic. The LED support mounted in the base and electrically coupled through the first electrical contact to electrical current. The light transmissive, and heat diffusing optic has an external an internal wall defining a cavity with the LED positioned in the cavity. The optic is in thermal contact with the LED support and mechanically coupled to the base. The snap together structure enables rapid manufacture while allowing numerous variations.

A lamp includes a linearly extending heat sink, blue-light-emitting LEDs mounted on the heat sink, and a light emitting cover mounted on the heat sink in line with the LEDs, a first portion of the cover opposite the LEDs including a phosphor that is excited by the LEDs to emit white light. The cover may be a tube with the LEDs outside the tube, a portion of the tube nearest the LEDs being transparent and receiving light from the LEDs. The tube may include reflectors that are attached to an exterior surface of the tube to hold the tube on the heat sink. Alternatively, the cover may enclose the LEDs on the heat sink, where a portion of the cover has an interior surface that reflects light from the LEDs to the first portion. The lamp may include electrical connections that allow for multiple lamps to be connected in series.

A battery module of the present invention is adaptable to be utilized in various configurations including and not limited to an overlapping battery cell packaging configuration and a vertical stack battery cell packaging configuration used in an automotive vehicle. The battery module has a plurality of battery heatsink assemblies with the cells disposed therebetween. A plurality of rods extend through the each heatsink assemblies to secure the heatsink assemblies and the cell with one another to form the battery module.

Work light has LEDs that require heatsink. Desired radiation pattern achieved by using optical components designed to produce beam or LEDs may have beams in different directions. Radiation pattern of LEDs may be changed by refractive-reflective optics or by convex lenses. Convex lenses may be hemispheres, other planoconvex shapes, concavo-convex shapes, or other shapes. Curved surfaces on any lenses may be spherical or aspheric. Ballast to operate the LEDs from line voltage AC or low voltage DC. Work light may contain batteries. The work light may be mounted on a stand. May have accessory mount. May have charging station. May have a paging transmitter to activate a paging receiver in work light. May have openings for heat transfer from heatsink to ambient air external to light.