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139results about How to "Shorten the conduction path" patented technology
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Probe card cooling assembly with direct cooling of active electronic components
InactiveUS6891385B2Shorten the conduction pathImprove performanceElectronic circuit testingElectrical measurement instrument detailsProbe cardHigh density
A probe card cooling assembly for use in a test system includes a package with one or more dies cooled by direct cooling. The cooled package includes one or more dies with active electronic components and at least one coolant port that allows a coolant to enter the high-density package and directly cool the active electronic components of the dies during a testing operation.
Owner:FORMFACTOR INC
Heat sink and heat sink assembly
InactiveUS20060181848A1Reduce system sizeLow costSemiconductor/solid-state device detailsSolid-state devicesEngineeringThermal contact
A heat sink and a heat sink assembly that includes the heat sink and a source of flowing air, such as a fan. The heat sink includes a base from which a first plurality of convective surfaces extends. At least one heat pipe is in thermal contact with the base and extends therefrom. The heat pipe includes an evaporator portion in thermal contact with the base and a condenser portion. A second plurality of convective surfaces is in thermal communication with the condenser portion of the heat pipe.
Owner:KILEY RICHARD F +1
Package structure in which coreless substrate has direct electrical connections to semiconductor chip and manufacturing method thereof
ActiveUS20090236750A1Simplifies manufactureEasy to manufactureSemiconductor/solid-state device detailsSolid-state devicesSolder maskElectrical connection
A package structure in which a coreless substrate has direct electrical connections to a semiconductor chip and a manufacturing method thereof are disclosed. The method includes the following steps: providing a metal carrier board having a cavity; placing a chip having a plurality of electrode pads on an active surface in the cavity of a board; filling the cavity with an adhesive for fixing the chip; forming a solder mask on the active surface of the chip and the surface of the metal carrier board at the same side, wherein the solder mask has a plurality of openings to expose the electrode pads of the chip; forming a built-up structure on the solder mask and the exposed active surface of the chip in the openings; and removing the metal carrier board. In this method the metal carrier board can support the built-up structure to thereby avoid warpage.
Owner:UNIMICRON TECH CORP
Co3O4 nano lamellar material and preparation method and application thereof
InactiveCN102412397AGood water solubilityPromote nucleationCell electrodesNanotechnologyCobalt saltLithium-ion battery
The invention discloses a Co3O4 nano lamellar material and a preparation method and application thereof. The preparation method comprises the following steps of: mixing cobalt salt, a surfactant, a precipitator and deioned water in stoichiometric ratio; transferring the mixed solution into a reaction kettle and carrying out hydro-thermal reaction for 17.5-18.5 hours at 115-125 DEG C; and then washing and drying to obtain a powdery mixed precursor; and carrying out heat treatment on the powdery mixed precursor in air to finally obtain the Co3O4 nano lamellar material. The prepared Co3O4 material is of a regular nano lamellar structure, and can be applied to the negative electrode of a chargeable lithium ion battery so as to improve the storage capacity of lithium.
Owner:SHANGHAI INST OF TECH
Half-dry solid-state adherent culture device for microalgae industrial production
ActiveCN103289887AReduce water consumptionAchieve ultra-high density cultureSolid phase fermentation bioreactorsSecondary metaboliteLiquid storage tank
The invention belongs to the field of microalgae culture, and in particular relates to a half-dry solid-state adherent culture device for microalgae industrial production. The half-dry solid-state adherent culture device comprises a bracket system, adherent culture units, a supporting shaft transmission system, a speed regulating motor, liquid supplementation pipes, collection grooves and a culture medium liquid storage tank, wherein at least one adherent culture unit is arranged on the bracket system and is connected with the speed regulating motor through the supporting shaft transmission system; the liquid supplementation pipes are respectively arranged above the adherent culture unit and are communicated with the culture medium liquid storage tank through pipelines; the collection grooves are respectively formed below the adherent culture unit and are communicated with the culture medium liquid storage tank through liquid collection pipes; a liquid circulating pump and a carbon supplementation device are arranged in the culture medium liquid storage tank. The half-dry solid-state adherent culture device can be used for producing microalgae biomass and secondary metabolites on a large scale; the yield in unit floor area is effectively improved; the culture period is shortened; the culture water consumption is greatly reduced; the cost of the culture device and the operation cost are reduced; the industrial magnification is facilitated.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Wiring board for having light emitting element mounted thereon
InactiveUS20140301054A1Avoid applicationUniform distribution of light intensityPrinted circuit aspectsSolid-state devicesOvervoltageZener diode
To provide a light emitting element mounting wiring substrate having a light emitting element mounting section on a substrate main body having a front surface and a back surface, and a confined component electrically connected to the light emitting element, such that the confine component does not obstruct the optical path of the light emitted from the light emitting element, resulting in uniform distribution of light intensity. The light emitting element mounting wiring substrate (1a) includes a substrate main body (2) which has a front surface (3) and a back surface (4) and which includes at least an insulating substrate (2a), and a plurality of element terminals (13, 14) formed on the front surface (3) of the substrate main body (2), at least one of the element terminals having a light emitting element mounting section (fa) on the top surface thereof, wherein the wiring substrate has a Zener diode (confined element) (10) embedded in the substrate main body (2), which element is electrically connected to a light emitting element (20) mounted on the mounting section (fa) and prevents application of overvoltage to the light emitting element (20).
Owner:NGK SPARK PLUG CO LTD
Preparation method for ordered ultra-thin catalyst layer, catalyst layer and application
ActiveCN106159285AIncrease the reaction areaIncrease profitCell electrodesElectrical conductorProton
The invention relates to a preparation method for an ordered ultra-thin electrode of a proton exchange membrane fuel cell. The preparation method comprises the steps of preparing an ordered electrode structure and establishing an ultra-thin catalyst layer; a process of impregnating and annealing is carried out on a carbon paper to obtain TiO<2> seed crystals; then a TiO<2> nanorod is grown through a hydrothermal method; a TiN ordered array is prepared through NH<3> etching; and the array is loaded with a catalyst to establish the ordered ultra-thin catalyst layer without containing a proton conductor (such as Nafion). The established ordered ultra-thin catalyst layer can be used for the proton exchange membrane fuel cell, other fuel cells and electrochemical devices.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Preparation method of LiFePO4/C modified ternary positive electrode material
ActiveCN105355880AImprove charge and discharge performanceShorten the conduction pathCell electrodesSecondary cellsLithium iron phosphateActive electrode
The invention relates to a preparation method of a LiFePO4 / C modified ternary positive electrode material. Firstly, a ternary positive electrode material is prepared by a coprecipitation method; then a LiFePO4 / C composite material is grown on the surface of the ternary positive electrode material by a solid phase method, and the ternary positive electrode material is subjected to surface coating modification. The lithium iron phosphate active electrode material is adopted for modifying the ternary electrode material, on one hand, the advantages of the two active materials can be integrated to obtain the composite positive electrode material having better cycle performance, higher capacity and larger energy density; on the other hand, a traditional modification method for a ternary material is changed, and the cycle performance of the ternary positive electrode material is improved in the premise of almost no loss of material self capacity.
Owner:SHANDONG GOLDENCELL ELECTRONICS TECH
Microalgae half-dry solid state adherent cultivation device for alternate illumination of bright and dark light
ActiveCN103289886AReduce water consumptionAchieve ultra-high density cultureSolid phase fermentation bioreactorsCirculating pumpBiology
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Semiconductor device integrated with optoelectronic components
ActiveUS7359590B2Reduce signal transmission lossShorten the conduction pathCircuit optical detailsSemiconductor/solid-state device detailsElectricityTransmission loss
A semiconductor device integrated with optoelectronic components includes a carrier board with at least two openings; a first and a second optoelectronic component disposed in the openings respectively, each of them having an active surface and an opposite non-active surface, wherein the active surface has a plurality of electrode pads and an optical active area; a dielectric layer formed on a surface of the carrier board and the active surfaces, and having a plurality of vias and openings to expose the electrode pads and the optical active areas respectively; and a circuit layer formed on a surface of the dielectric layer and electrically connected to the electrode pads directly. Then, at least one waveguide is formed on the surface of the semiconductor device integrated with the optoelectronic component to provide signal transmitting between the first and second optoelectronic components, therefore, shortens the signal transmission path, reduces the transmission loss and noise, and hence improves the signal transmission quality.
Owner:PHOENIX PRECISION TECH CORP
Three-dimensional nanometer porous copper/two-dimensional cuprous oxide nanosheet array type lithium ion battery negative electrode and one-step preparation method thereof
ActiveCN106229462AImprove liquidityFast formingMaterial nanotechnologyCell electrodesNanotechnologyLithium electrode
The invention provides a three-dimensional nanometer porous copper / two-dimensional cuprous oxide nanosheet array type lithium ion battery negative electrode. The lithium ion battery negative electrode comprises a three-dimensional nanometer porous copper substrate and a cuprous oxide nanosheet array layer, the three-dimensional nanometer porous copper substrate is used as a current collector, the cuprous oxide nanosheet array layer is used as an active lithium storage layer, the cuprous oxide nanosheet array is arranged on a surface of the substrate and is integrated with the substrate, and the cuprous oxide nanosheet array layer comprises cuprous oxide nanosheets formed on the substrate through in-situ growth, and the cuprous oxide nanosheets are perpendicular to the three-dimensional nanometer porous copper substrate and are arranged in a staggered manner to form an array structure. By the lithium ion battery negative electrode, the cycle performance and the specific capacity of the lithium ion battery can be improved. The invention also provides a one-step preparation method of the abovementioned lithium ion battery negative electrode. By the method, the production process of the lithium ion battery negative electrode can be effectively simplified.
Owner:SICHUAN UNIV
Porous conductive additive and preparation method thereof, lithium ion battery
ActiveCN103050704AImprove pore structureReduced mass transfer polarizationCell electrodesSecondary cellsGraphiteGraphene
The invention discloses a porous conductive additive and a preparation method thereof. The porous conductive additive consists of graphene-based particles, having flaky particle shapes, the size distribution of 0.01-5 microns in a planar direction, the size distribution of 0.1-50 nanometers in a thickness direction, and through holes with the diameters of 1-1000 nanometers inside, with the porosity of 20-70%. The preparation method comprises the following steps of: dispersing a graphene-based material into a solvent to obtain a dispersion solution, adding a pore forming agent in a mass ratio of the pore forming agent to the graphene-based material of 0.1-1000, and performing ultrasonic treatment or mixing to obtain a uniform mixed solution; heating the mixed solution, removing the solvent, drying an obtained solid, and heating the solid in an oxygen-free protective atmosphere to obtain the porous conductive additive. The porous conductive additive has very high conductivity efficiency and can optimize a pore structure in an electrode and reduce ion conducting paths.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Circuit board with optoelectronic component embedded therein
ActiveUS20070104412A1Simplify fabrication processReduces fabrication difficultyCircuit optical detailsSolid-state devicesOpto electronicElectrical and Electronics engineering
A circuit board structure with optoelectronic component embedded therein comprises a carrier board with at least two through openings; a first optoelectronic component and a second optoelectronic component disposed in the openings respectively, wherein a plurality of electrode pads and optical active areas are formed on the active surfaces of the optoelectronic components; a dielectric layer formed on a surface of the carrier board and the active surface of the optoelectronic components, wherein a plurality of vias for exposing the electrode pads and two holes for exposing the optical active areas are formed in the dielectric layer; a circuit layer formed on a surface of the dielectric layer and electrically connected to the electrode pads of the optoelectronic components; an insulating protecting layer formed on the dielectric layer and the circuit layer; and at least one optical transmission element formed on a surface of the insulating protecting layer.
Owner:PHOENIX PRECISION TECH CORP
Bigrid power MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) device
InactiveCN102738240AReduce withstand voltageShorten the conduction pathSemiconductor devicesField-effect transistorElectrode Contact
The invention discloses a bigrid power MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) device, belonging to the technical field of semiconductor power devices. According to the invention, on the basis of a common bigrid LDMOS (Laterally Diffused Metal Oxide Semiconductor) device, by means of extending a drain-electrode contact area connected with drain-electrode metal to a place below an active layer to form a longitudinal drain-electrode contact area (12a) and introducing a layer of heavily-doped buried layer namely a transverse drain-electrode contact area (12b) connected with the lower end of the longitudinal drain-electrode contact area (12a) between the active layer and the substrate, a current conduction path is shortened; meanwhile, a bigrid structure is adopted to form a double-current channel, so that the current flow area is enlarged, and on-resistance and power consumption are reduced greatly; and compared with the devices with the same transverse dimensions, the device disclosed by the invention is slightly reduced in withstand voltage.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Manufacturing method of membrane electrode of novel ultrathin proton exchange membrane fuel cell
InactiveCN102157741AIncrease profitShorten the conduction pathCell electrodesPlasma technologyCarbon nanotube
The invention discloses a manufacturing method of a membrane electrode of a novel ultrathin proton exchange membrane fuel cell, and the method comprises the following manufacturing processes: firstly manufacturing a piece of hydrophobic carbon paper, then sputtering a nickel catalyst layer on the carbon paper, using a plasma enhanced chemical vapor deposition method to manufacture a directional carbon nano tube, and sputtering platinum nano particles or platinum ruthenium particles on the directional carbon nano tube to form an electrode; then depositing a plasma polymerized proton exchange membrane on an electrode surface; and finally assembling two plasma polymerized proton exchange membranes with electrodes into the membrane electrode of the novel ultrathin proton exchange membrane fuel cell. The plasma polymerized proton exchange membrane is ultrathin in structure and capable of improving the usage rate of the catalyst, reducing the contact resistance of the membrane and the electrode and the conducting path of the proton, and improving the performance of the fuel cell, and has self-humidifying capacity so as to reduce the production cost of the fuel cell. By using a drying plasma technology, the manufacturing method has the characteristics of environmental friendliness and low cost.
Owner:INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
Chrysanthemum-shaped cobaltosic oxide (Co3O4) material and preparation method and application thereof
InactiveCN102332576AIncreased specific surface area of the structureShorten the conduction pathCell electrodesActive agentSurface-active agents
The invention discloses a chrysanthemum-shaped cobaltosic oxide (Co3O4) material and a preparation method and application thereof. The preparation method comprises the following steps of: mixing cobalt salt, a surface active agent, a precipitating agent and a solvent in a stoichiometric ratio; putting a mixed solution into a reaction kettle and performing hydro-thermal reaction at the temperature of 95 to 105 DEG C for 7.5 to 8.5 h; washing and drying, and thus obtaining a powdery mixed precursor; and performing heat treatment on the powdery mixed precursor in air, and thus obtaining the chrysanthemum-shaped Co3O4 material. The obtained chrysanthemum-shaped Co3O4 material has better electrochemical performance and is applicable to a cathode of a rechargeable lithium ion battery.
Owner:SHANGHAI INST OF TECH
Ventilation type air cooling magnetic liquid sealing device
InactiveCN104165230AGuaranteed cooling effectSolve the problems of high heat generation, shortened service life or even failureEngine sealsEngineeringMagnetic liquids
The invention discloses a ventilation type air cooling magnetic liquid sealing device and belongs to the field of mechanical engineering sealing. The ventilation type air cooling magnetic liquid sealing device successfully solves the problems that when the online speed of an existing magnetic liquid sealing device is larger than 20 m / s, the heating amount of magnetic liquid in a sealing gap is larger, the service life is shortened, and the magnetic liquid even fails. The ventilation type air cooling magnetic liquid sealing device comprises a shell (2), a first pole shoe (3), a first permanent magnetic body (4), a second pole shoe (5), a second permanent magnetic body (6), a third pole shoe (7), a shaft sleeve (10), a ventilation connector (12) and other parts. According to the ventilation type air cooling magnetic liquid sealing device, a cooling circulating channel for cooling air to circulate is formed among the ventilation connector (12), the shell (2), a ventilation hole in the second permanent magnetic body (6), a sealing cavity II and a shaft sleeve (10). The channel can ensure cooling of magnetic liquid under all pole teeth, conduction paths are reduced, and the cooling circulating efficiency is improved.
Owner:BEIJING JIAOTONG UNIV
Three-dimensional nano porous copper/one-dimensional cuprous oxide nanowire network type lithium ion battery cathode and one-step preparation method thereof
ActiveCN106207090AImprove cycle performanceAlleviate volume changesMaterial nanotechnologyCell electrodesNanowireNetwork structure
The invention provides a three-dimensional nano porous copper / one-dimensional cuprous oxide nanowire network type lithium ion battery cathode. The lithium ion battery cathode is composed of a three-dimensional nano porous copper substrate and a cuprous oxide nanowire layer; the substrate is taken as a current collector, and the cuprous oxide nanowire layer is taken as an active lithium storage layer; the cuprous oxide nanowire layer is located on the surface of the substrate and combined with the substrate as a whole; the cuprous oxide nanowire layer is formed by cuprous oxide nanowires which are in-situ grown on the substrate and are mutually interweaved and stacked, and the cuprous oxide nanowire layer is of a network structure; and the lithium ion battery cathode can improve the cycle performance and specific capacity of a lithium ion battery. The invention further provides a one-step preparation method of the lithium ion battery cathode, and the method can effectively simplify the production technology of the lithium ion battery cathode.
Owner:SICHUAN UNIV
Solid electrolyte structure and preparation method thereof, and lithium battery
ActiveCN108336401AImprove performanceImprove securitySolid electrolytesLi-accumulatorsSolid state electrolyteAll solid state
The invention especially relates to a solid electrolyte structure and a preparation method thereof, and a lithium battery, belonging to the technical field of lithium batteries. The solid electrolytestructure of the invention comprises a polymer lithium salt composite membrane and an inorganic porous membrane, wherein the inorganic porous membrane has a plurality of pore channels which are filledwith the polymer lithium salt composite membrane. The solid electrolyte structure provided by the invention integrates the characteristics of good structural flexibility and contact interface performance of an organic polymer solid electrolyte and the characteristics of high security and structural stability under high-voltage conditions of an inorganic solid electrolyte, so an all-solid-state lithium battery with good performance can be designed. A preparation method for a solid electrolyte in the invention can efficiently prepare an organic-inorganic hybrid solid electrolyte, is simple in process flow and can meet the demands of large-scale production and manufacturing.
Owner:成都大超科技有限公司
Probe card cooling assembly with direct cooling of active electronic components
InactiveUS20050206397A1Shorten the conduction pathImprove performanceElectronic circuit testingElectrical measurement instrument detailsProbe cardHigh density
A probe card cooling assembly for use in a test system includes a package with one or more dies cooled by direct cooling. The cooled package includes one or more dies with active electronic components and at least one coolant port that allows a coolant to enter the high-density package and directly cool the active electronic components of the dies during a testing operation.
Owner:FORMFACTOR INC
Ordered catalyst layer and preparation and application thereof
ActiveCN106410228AIncrease profitImprove stabilityMaterial nanotechnologyCell electrodesCarbon layerElectrolysis
The invention relates to an ordered catalyst layer of a proton exchange membrane fuel cell. Fe, Co, Ni or alloy thereof is loaded on the surface of stainless steel, and then a carbon layer is prepared on the surface of the stainless steel through a CVD method. Then, an ordered PPy array is formed on the surface of the carbon layer through in-situ polymerization by an electrochemical polymerization method, so that the PPy array has the characteristic that the PPy array grows approximately perpendicular to the surface of the carbon layer. One or two kinds of metal are firstly loaded on the array, and then the PPy array coated with a catalyst is transfer-printed on a Nafion film, so that an ordered thin catalyst layer is constructed. The catalyst layer prepared with the method does not contain a proton conductor (such as Nafion), and the constructed ordered catalyst layer can be used for proton exchange membrane fuel cells, alkaline fuel cells and solid polymer water electrolysis pools.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Method for preparing fuel cell membrane electrode
The invention discloses a method for preparing a fuel cell membrane electrode. The method is characterized by comprising the steps of preparing a layer of carbon powder substrates on a transfer medium, depositing platinum nanowires, then coating a layer of electrolyte resin solution to form a catalyst layer, and transferring the catalyst layer to a proton exchange membrane by using a heat transfer method to obtain a platinum nanowire catalyst layer membrane electrode. Through the method for preparing the fuel cell membrane electrode, a series of problems caused due to swelling of the membrane in the preparation process of the substrates and depositing the platinum nanowires can be well solved. The prepared fuel cell membrane electrode has the beneficial effects of the platinum nanowire catalyst layer, also has the advantages of simple process, low production cost and good catalyst layer uniformity and is conducive to industrial production.
Owner:南京东焱氢能源科技有限公司
Lithium sulphur battery anode material and preparation method thereof
InactiveCN108232135AStrong interactionShorten the conduction pathMaterial nanotechnologyCell electrodesLithiumFreeze-drying
The invention relates to a lithium sulphur battery anode material and a preparation method thereof. The lithium sulphur battery anode material is a reduction oxidized graphene aerogel nested sulphur nano particle composite material with a three-dimensional net-shaped structure. The preparation method of the lithium sulphur battery anode material comprises the steps that, gel is formed by online reducing a oxidized graphene gel and sulphur gel mixture, the gel is frozen and dried, and the reduction oxidized graphene aerogel nested sulphur nano particle composite material with the three-dimensional net-shaped structure is obtained. The preparation method specifically comprises the steps that oxidized graphene serves as an initial raw material, mixed gel of oxidized graphene and sulphur is prepared, reduction oxidized graphene gel is prepared by adopting an online reduction method at the room temperature to wrap the sulphur nano particle composite material, the internally wrapped solventis removed through freeze drying, and the reduction oxidized graphene aerogel nested sulphur nano particle composite material is obtained. The lithium suplhur battery anode material can effectively prevent dissolution and inhibition shuttle effects of polysulfide, and can enhance the charging and discharging stability of the lithium sulphur battery.
Owner:襄阳华虹高科新材料有限公司
Preparation method of 3D micro/nano-structure spherical active iron phosphate
ActiveCN104085868AShorten the conduction pathImprove conductivityPhosphorus compoundsWater bathsNano structuring
The invention relates to a preparation method of 3D micro / nano-structure spherical active iron phosphate, which comprises the following steps: (1) preparing a surfactant solution; (2) preparing an iron nitrate nonahydrate solution; (3) dropwisely adding the iron nitrate nonahydrate solution into the surfactant solution to obtain a solution A; (4) weighing a H3PO4 solution, adding the phosphoric acid solution into the solution A, stirring and mixing for 30-240 minutes to obtain a clear transparent solution B; (5) reacting the obtained clear transparent solution B under the 80-100 DEG C water bath condition for 2-4 days or under the 150-200 DEG C oil bath condition for 2-8 hours; and (6) cooling, carrying out solid-liquid separation, washing, carrying out centrifugal separation to obtain a white precipitate, and drying the white precipitate at 80-110 DEG C. The iron phosphate material can be prepared into a LiFePO4 positive pole material after being lithiated, and has the advantages of favorable high-magnification charging / discharging performance and favorable tap density.
Owner:HUNAN INST OF TECH
Wiring board for having light emitting element mounted thereon
InactiveCN103959492AEfficient RadiationNot prone to polarized lightPrinted circuit aspectsSolid-state devicesOvervoltageZener diode
Provided is a wiring board for having a light emitting element mounted thereon, which has, on a front surface of a substrate main body having the front surface and a rear surface, a light emitting element mounting section, and an integrated component to be electrically connected to the light emitting element, and which does not generate, due to the integrated component, disturbance to optical path and polarization of light emitted from the light emitting element. A wiring board (1a) for having a light emitting element mounted thereon includes: a substrate main body (2), which has a front surface (3) and a rear surface (4), and which includes at least an insulating substrate (2a); and a plurality of element terminals (13, 14), which are formed on the front surface (3) of the substrate main body (2), and at least one of which has a light emitting element mounting section (fa) on an upper surface. The wiring board (1a) has a zener diode (integrated component) (10) integrated in the substrate main body (2) by having the zener diode embedded therein, said zener diode to be electrically connected to a light emitting element (20) to be mounted on the mounting section (fa), and preventing overvoltage from being applied to the light emitting element (20).
Owner:NGK SPARK PLUG CO LTD
Package structure in which coreless substrate has direct electrical connections to semiconductor chip and manufacturing method thereof
ActiveUS8058723B2Easy to manufactureIncrease flexibilitySemiconductor/solid-state device detailsSolid-state devicesSolder maskAdhesive
A package structure in which a coreless substrate has direct electrical connections to a semiconductor chip and a manufacturing method thereof are disclosed. The method includes the following steps: providing a metal carrier board having a cavity; placing a chip having a plurality of electrode pads on an active surface in the cavity of a board; filling the cavity with an adhesive for fixing the chip; forming a solder mask on the active surface of the chip and the surface of the metal carrier board at the same side, wherein the solder mask has a plurality of openings to expose the electrode pads of the chip; forming a built-up structure on the solder mask and the exposed active surface of the chip in the openings; and removing the metal carrier board. In this method the metal carrier board can support the built-up structure to thereby avoid warpage.
Owner:UNIMICRON TECH CORP
Circuit board with optoelectronic component embedded therein
ActiveUS7519244B2Shorten the conduction pathReduce signal transmission lossCircuit optical detailsSolid-state devicesEngineeringBoard structure
A circuit board structure with optoelectronic component embedded therein comprises a carrier board with at least two through openings; a first optoelectronic component and a second optoelectronic component disposed in the openings respectively, wherein a plurality of electrode pads and optical active areas are formed on the active surfaces of the optoelectronic components; a dielectric layer formed on a surface of the carrier board and the active surface of the optoelectronic components, wherein a plurality of vias for exposing the electrode pads and two holes for exposing the optical active areas are formed in the dielectric layer; a circuit layer formed on a surface of the dielectric layer and electrically connected to the electrode pads of the optoelectronic components; an insulating protecting layer formed on the dielectric layer and the circuit layer; and at least one optical transmission element formed on a surface of the insulating protecting layer.
Owner:PHOENIX PRECISION TECH CORP
Semiconductor device integrated with optoelectronic components
ActiveUS20070104413A1Simplify the manufacturing processReduces fabrication difficultyCircuit optical detailsSemiconductor/solid-state device detailsOpto electronicEngineering
A semiconductor device integrated with optoelectronic components includes a carrier board with at least two openings; a first and a second optoelectronic component disposed in the openings respectively, each of them having an active surface and an opposite non-active surface, wherein the active surface has a plurality of electrode pads and an optical active area; a dielectric layer formed on a surface of the carrier board and the active surfaces, and having a plurality of vias and openings to expose the electrode pads and the optical active areas respectively; and a circuit layer formed on a surface of the dielectric layer and electrically connected to the electrode pads directly. Then, at least one waveguide is formed on the surface of the semiconductor device integrated with the optoelectronic component to provide signal transmitting between the first and second optoelectronic components, therefore, shortens the signal transmission path, reduces the transmission loss and noise, and hence improves the signal transmission quality.
Owner:PHOENIX PRECISION TECH CORP
Back passivation matrix dot type laser grooving conductive structure
ActiveCN108666374AEasy to collectReduce voidsPhotovoltaic energy generationSemiconductor devicesCharge carrierWave band
The invention discloses a back passivation matrix dot type laser grooving conductive structure. The structure comprises a silicon wafer substrate, wherein the back face of the silicon wafer substrateis provided with lamination back passivation film, and back electrode main gate regions are arranged at intervals on the lamination back passivation film; laser grooving is carried out on non-back electrode main gate regions on the lamination back passivation film through a lamination back passivation film in a wave band of 500-1200 nanometers to from a repeating dot group structure unit, whereinthe repeating point group structure unit is composed of 2-18 circular-aperture-shaped laser spots overlapping 3%-17% of a circular area region, and the intervals of center points of the repeating point group structure unit are 0.2-1.0 millimeters. The laser grooving conductive structure has the advantage that a back conduction plane can be divided into smaller conductive structure units, so that the photo-generated current conduction path is shortened, the transmission collecting capacity of current carriers is improved, lattice damage and composite damage of the battery silicon wafer substrate caused by the laser grooving can be reduced, and the photovoltaic conversion efficiency and assembly reliability of single polycrystalline silicon back passivation local back contact solar cell areimproved.
Owner:TONGWEI SOLAR (ANHUI) CO LTD
Method for manufacturing light emitting diode packaging structure
InactiveCN102881779AExtended service lifeShorten the conduction pathSolid-state devicesSemiconductor devicesReflective layerLight-emitting diode
The invention discloses a method for manufacturing a light emitting diode packaging structure. The method comprises the following steps of: supplying a substrate; paving a sticky layer on the substrate; forming a plurality of pairs of metal layers on the sticky layer; forming a reflection layer on the sticky layer, wherein the reflection layer is provided with a plurality of grooves surrounding the metal layers, and the bonding force of the sticky layer to the substrate is greater than that of the sticky layer to the reflection layer; arranging light emitting diode chips in the grooves respectively, and electrically connecting the light emitting diode chips and corresponding metal layers in the grooves; forming packaging layers in the grooves, and covering the light emitting diode chips in the packaging layers; and separating the substrate together with the sticky layer from the reflection layer and the metal layers which are positioned on the sticky layer. Therefore, the substrate-free light emitting diode packaging structure is formed; the thickness of the light emitting diode packaging structure is reduced; and a thinned structure is realized.
Owner:ZHANJING TECH SHENZHEN +1
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