360results about How to "Increase heat release" patented technology

A substrate for a light emitting diode (LED) package, and an LED package having the same are disclosed. The substrate for an LED package includes: a metal plate; an insulation oxide layer formed on a portion of the surface of the metal plate; a first conductive pattern formed at one region of the insulation oxide layer and providing a light emitting diode mounting area; and a second conductive pattern formed at another region of the insulation oxide layer such that it is separated from the first conductive pattern. In the substrate for an LED package, because regions of the insulation oxide layer other than regions for insulating conductive patterns are removed, heat generated from the light emitting diode can be effectively released. In addition, degradation of reflexibility and luminance of the LED due to the insulation oxide layer can be prevented.

The invention discloses a method for coating micro/nano-metal powder by chemical vapor deposition, including: decomposing difluorocarbene precursor gas via a cracking pipe to generate difluorocarbene free radicals; contacting the generated difluorocarbene free radicals with micro/nano-metal powder, and due to polymerization between difluorocarbene free radicals, a compact polytetrafluoroethylene coating film is generated on the surface of micro/nano-metal powder. In allusion to disadvantages and defects of the application of micro/nano-metal powder in energy-containing materials, polytetrafluoroethylene is polymerized on the surface of metal powder by chemical vapor deposition in order to coat micro/nano-metal powder. In the invention, the ignition temperature of metal powder is effectively decreased, the ignition delay time is shortened, and the combustion speed of metal powder is improved; the surface of metal powder coated with polytetrafluoroethylene is highly hydrophobic, so that reactive metal powder can be effectively prevented from absorption of moisture and oxidation.

When silver oxide is reduced to silver, a large number of cores of metallic silver are formed inside the silver oxide. Then, the silver oxide is reduced in a manner of being hollowed out while its original outer configuration is being maintained. As a result, the curvature of the silver generated becomes larger. The utilization of this microscopic-particle implementation mechanism allows accomplishment of the bonding even if the silver oxide is supplied not in a particle-like configuration, but in a closely-packed layer-like configuration. In the present invention, there is provided an electronic member including an electrode for inputting/outputting an electrical signal, or a connection terminal for establishing a connection with the electrical signal, wherein the uppermost surface of the electrode or the connection terminal is a silver-oxide layer.

A stack chip module includes a substrate having a predetermined-size groove on one side and a circuit pattern, one end of the circuit pattern being adjacent to the groove; a first semiconductor chip adhered in the groove of the substrate by adhesive and having a plurality of center pads and a plurality of edge pads, electrically connected to each other, on the upper part thereof; a plurality of gold wires for electrically connecting the circuit pattern of the substrate and the edge pads of the first semiconductor chip, respectively; a second semiconductor chip having a plurality of center pads corresponding to those of the first semiconductor chip, the formative side being opposite to that of the first semiconductor chip; and a plurality of bumps interposed between the center pads of the first semiconductor chip and the center pads of the second semiconductor chip for joining and electrically connecting them.

The package has a base body (51) with a mounting portion for mounting a light-emitting unit. A frame body is joined to an outer edge of the body (51) to surround the portion. A wiring conductor has its one end formed on an upper surface of the base body, to electrically connect an electrode of the light emitting unit. The light transmitting unit (53) is inside the frame body to cover the light emitting unit. - Independent claims are also included for the following: - (A) a light-emitting apparatus comprising a package for housing a light emitting unit - (B) an illumination apparatus constructed by setting up a light-emitting apparatus in a predetermined arrangement.

The invention discloses a capacity-control type double-cylinder rotary compressor and a control method thereof. The capacity-control type double-cylinder rotary compressor comprises a seal shell, wherein the internal pressure of the seal shell is a high-pressure side pressure, and a motor assembly and a compression assembly connected with the motor assembly are arranged in the shell; the compression assembly comprises a first cylinder, a second cylinder, an intermediate plate, a crankshaft, a first piston, a second piston, a first slip sheet, a second slip sheet, a first slip sheet cavity, a second slip sheet cavity, a main bearing and an auxiliary bearing, wherein the crankshaft is connected with the motor assembly; the first piston and the second piston are connected with the crankshaft to carry out eccentric rotation, and respectively arranged in a first cylinder compression chamber and a second cylinder compression chamber; the first slip sheet cavity and the second slip sheet cavity are respectively used for accommodating the back side end of the slip sheet; the main bearing and the auxiliary bearing are used for supporting the crankshaft; and the double-cylinder rotary compressor is provided with a gas refrigerant injection device which injects gas refrigerants into the second cylinder compression chamber and is also provided with a volume control device which switches the pressure of the second cylinder compression chamber between the high-pressure side pressure and the low-pressure side pressure. The capacity-control type double-cylinder rotary compressor has the advantages that the efficiency is improved effectively, and the EER (energy efficiency ratio) is high.

A semiconductor device which uses a semiconductor element having main current input/output electrodes, one and the other of which are extended up to a one surface and a remaining surface of a semiconductor chip respectively for causing one of the input/output electrodes to be contacted with a conductive layer of a insulating substrate, whereby the semiconductor element is supported on or above the insulating substrate. A conductive strip which is made of a composite material of carbon and aluminum or a composite material of carbon and copper is used for connection between the remaining input/output electrode of the semiconductor chip and the conductive layer of the insulating substrate.

An electrophoresis member is produced by laying a plurality of capillaries on an adhesive layer born on a support layer to form a capillary layer, laminating thereon a second support layer, and partially removing the first support layer, the first adhesive layer and the second support layer to partially expose the capillaries to form a window portion for irradiation and detection and a sample injection portion for injecting a sample.

A controller that performs pulse width modulation control of a three-phase inverter circuit includes a three-phase modulation voltage command value generation unit, a two-phase modulation voltage command value generation unit, a voltage command switching unit, and a PWM signal output unit. The voltage command switching unit switches a voltage command value to a two-phase modulation voltage command value when a determination value becomes larger than or equal to a first threshold value, and switches the voltage command value to a three-phase modulation voltage command value when the determination value becomes smaller than a second threshold value, which is smaller than the first threshold value.

A lighting device 12 for a display device comprising: a plurality of LED light sources 20, an LED substrate 21 having the plurality of LED light sources 20 mounted thereon, an optical member 15 arranged on a light emission side of the LED sources 20, and a chassis 14 for supporting the plurality of LED light sources 20. The chassis 14 has a cutout 17. The LED substrate 21 is attached to an opposite surface of the chassis 14 from a surface that faces the optical member 15 such that the LED light sources 20 are exposed toward the optical member 15 side through the cutout 17.

Provided is an anisotropic conductive adhesive which is capable of achieving high heat dissipation performance. Conductive particles (31) and solder particles (32) are dispersed in a binder. In an LED package which is obtained by thermal compression bonding using this anisotropic conductive adhesive, terminals (electrodes (12a, 14a)) of an LED element and terminals (electrodes (22a, 23a)) of a substrate are electrically connected with each other through the conductive particles (31), while the terminals of the LED element and the terminals of the substrate are solder-joined with each other.

Provided is a small size LED apparatus which will not easily cause separation between the lead frame and the resin and resin crack, and has a height lower than 1 mm. In addition, a manufacturing method for the small size LED apparatus is also provided. The small size LED apparatus uses the lead frame to drill the long and abnormal metal material which arranged in order with common part, thin wall part and common part in longer direction with a thickness rate of 2.5:1-3.5:1, forms a chip pad part and an inner wire part on the thin wall part, forms an external wire part on the common part, and jets a formed resin cup shape part, and cuts off the external wire part to form the end part for the external wire part and will not bend the external wire part.

The vacuum cleaner has an electric blower chamber 3 having an electric blower 3 built in it for generating suction wind, and a secondary battery storing part 19 having the secondary battery 6 built in it for supplying power source to the electric blower 3. At least a part of exhaust discharged by the electric blower 3 flows into the secondary battery storing part 19, and thereafter it flows back again to the electric blower chamber 8. After cooling the secondary battery 6 by the exhaust, the exhaust does not discharged directly to the atmosphere from the secondary battery storing part 19 but it is returned to the electric blower chamber 8. Thereby, temperature of the exhaust discharged to the atmosphere is low and usability is high, and cooling of the secondary battery 6 can also be performed, so that the vacuum cleaner capable of improving life of the secondary battery is achieved.

An air conditioner features that a heat releasing channel for its electric elements is arranged in order to use the fan to generate a forced convection for releasing heat from electric elements, or a heat exchanger for said electric elements is arranged in order to make the flowing cold medium to suck the heat from electric elements.

The invention discloses an aluminum powder/polyvinylidene fluoride composite particle as well as a preparation method and application thereof. The composite particle is a core-shell structure with nano aluminum powder as a core and PVDF as a shell, and comprises 70%-90% of the nano aluminum powder and 10%-30% of the PVDF according to mass fraction. The method comprises the following steps of preparing a suspension liquid of the PVDF and nano aluminum powder by taking a mixed solution of acetone and dimethylformamide with the volume ratio of 3:2 as a solvent, carrying out electrostatic sprayingon the suspension liquid, and collecting the Al/PVDF composite particle. The composite particle has good corrosion resistance in the natural environment, the content of active aluminum in the nano aluminum powder can be kept for a long time so that the active aluminum can be prevented from being oxidized, and the heat release amount of the composite particle is improved. In addition, the Al/PVDFcomposite particle has good dispersibility and is high in reaction speed when reacting under high temperature, and the combustion speed can reach 60 m/s and above; and therefore, as an energy-containing material, the Al/PVDF composite particle has a wide application prospect.

The invention discloses a novel sound-proof building material and a preparation method thereof and relates to the technical field of novel building materials. The novel sound-proof building material is prepared from raw materials in parts by weight as follows: 30-45 parts of polyethylene, 28-36 parts of polybutadiene rubber, 15-24 parts of kaolin, 10-18 parts of asbestos, 8-17 parts of plant fiber, 12-20 parts of volcanic mud, 8-16 parts of hollow glass beads, 7-15 parts of glass fibers, 5-9 parts of montmorillonite, 4-8 parts of nanometer oxide, 8-13 parts of silica particles, 10-16 parts ofpolyurethane resin particles, 4-9 parts of diatom ooze, 8-14 parts of calcium silicate, 4-7 parts of a foaming agent, 3-8 parts of an antioxidant, 4-7 parts of a flame retardant and 2-5 parts of a plasticizer. The novel sound-proof building material is light and easy to mount, has the advantages of stable chemical property, good sound absorbing effect and good flame retardance, can effectively weaken noise outside space, is low in raw material cost and has good market prospect.

The invention belongs to the technical field of hydrogen storage materials, and particularly relates to a preparation method of a metal oxide composite magnesium hydride hydrogen storage material. Themethod comprises the steps that magnesium hydride serves as a base material, metal oxide particles are mixed, the mass percentage content of metal oxide in the mixture is 1%-8%, and the mixture is subjected to hydrogen filling ball milling in a ball mill to obtain the metal oxide composite magnesium hydride hydrogen storage material. By adding the nanoscale metal oxide particles, the hydrogenation speed of the magnesium-based composite powder in the hydrogen charging ball milling process can be increased, and reduction of the particle size of magnesium hydride is facilitated; the nanocrystalline MgH2 is coated with the metal oxide to form a core-shell structure with an excellent synergistic effect, the core-shell structure has a good catalytic effect and remarkable dynamic performance, the hydrogen storage reaction speed can be improved, microcell heat release can be controlled, agglomeration of a hydrogen storage reactant Mg (OH) 2 can be effectively eliminated through the metal oxide, and the hydrogen storage efficiency is improved. Therefore, the purpose of sufficient hydrolysis reaction is achieved.

The invention belongs to the technical field of combustion synthesis preparation, and in particular relates to a thermite for hypergravity-assisted combustion synthesis of a copper-based composite material. According to the thermite provided by the invention, the formula employs a CuO powder with particle size in gradient distribution and an Al powder with particle size in gradient distribution, combustion rate and heat release amount in the preparation of the copper-based composite material is controlled by adding a Cu2O powder, a Cu powder, a MgO powder and a CaF2 powder, so as to realize stability and controllability of thermit reaction in the supergravity field. The thermite provided by the invention has the advantages of low sputtering rate, high heat release amount, stability and controllability, and is suitable for hypergravity-assisted combustion synthesis of various copper-based composite materials.

An optical pickup device 50 comprising a laser diode 1, a photo detector 2, a housing 3 having an optical system for guiding light from the laser diode 1 to an optical disk and guiding light reflected on the optical disk to the photo detector, a wiring 5 to supply current to the laser diode 1, and a metallic cover 9 provided outside of the housing 3, wherein

• • the laser diode 1 is bonded to the housing 3 by adhesive, a metallic member 10 is mounted on the surface of the laser diode 1 by connecting thermally, and the metallic member 10 is thermally connected to the cover 9 by solder.

The invention discloses a gel-type emulsion explosive and a method for preparing the same. The explosive is prepared by 75%-86% of ammonium nitrate, 4%-7% of emulsifier-compound grease, 0.5%-4% of crystal modifier and water balance, different models of coal permissible products are prepared by adding 3%-7% of flame reducer into the explosive. When preparation, the ammonium nitrate, crystal modifier, water and flame reducer are mixed, heated and dissolved to form an oxidant water solution as an aqueous phase solution, the emulsifier-compound grease is heated to form a combustible agent solution as an oil phase solution, the aqueous phase solution and oil phase solution are pumped into an open type emulsifier for emulsification after accurate measurement and are sensitized to finished products in a low speed mixing device by means of a belt device. The explosive energy of the product can be released to a maximum extent, the density can reach 1.4g/cm<3>, the explosion strength can reach 360ml and the detonation velocity can reach 6500m/s.

Cut-off vortex combustors for gas turbines. The annular burner housing has a plurality of inlet centerpieces arranged along the helical axis. The inlet centerbody includes a leading edge structure, opposing side walls, a pressurizable chamber, and a rear wall. The inlet center body cooperates with the adjacent structure and the rear body bluff body to define a shut-off swirl chamber combustor for mixing the inlet fluid and combustible fuel to form hot combustion gases. Mixing is enhanced by utilizing posts adjacent to the rear wall to create swirls in the fluid flow, and by injecting fuel and/or air in the opposite direction to the swirl created by the bulk fluid flow. The hot combustion gases are used in a turbine for kinetic energy extraction or in a heat exchange device for thermal energy recovery. High combustion efficiency can be obtained and the emission of nitrogen oxides and carbon monoxide is less than 10ppm.

The invention discloses high-hydrophilic and exothermal spinning solution for polyacrylonitrile-based carbon fibers and a preparation method thereof. The spinning solution consists of N,N-dimethyl formamide solution of monomer and co-monomer random copolymer. The preparation method for the spinning solution comprises the following steps of: adding azodiisobutyronitrile initiator, acrylonitrile main monomer, allylimidazolidone co-monomer and N,N-dimethyl formamide solvent into a reaction kettle with a condensation and mechanical stirring device, stirring and mixing the components at the room temperature, bubbling the mixture for 10 to 40 minutes by using nitrogen, then reacting the mixture for 6 to 36 hours at the constant temperature of between 50 and 70 DEG C under the protection of the nitrogen, and then removing residual monomers and bubbles to obtain the spinning solution with high hydrophilic property and good exothermal property, wherein the main monomer accounts for 94 to 98 percent of the total mass of the monomers, the co-monomer accounts for 2 to 6 percent of the total mass of the monomers, the azodiisobutyronitrile accounts for 0.2 to 1.0 percent of the total mass of the monomers, and the mass total concentration of the monomers is 15 to 35 percent. The weight-average molecular weight of the copolymer can be controlled to be between 0.1 and 0.35 million, the contact angle of the copolymer and the water is about 32.3 degrees, and the spinning solution has good hydrophilic property and low exothermal rate.