Patent application number | Description | Published |
20090011548 | HYBRID INTEGRATED CIRCUIT DEVICE AND MANUFACTURING METHOD THEREOF - A method of manufacturing a hybrid integrated circuit device of the present invention includes the steps of preparing a lead frame which constituted by units each having a plurality of leads, and fixing a circuit substrate on each unit of the lead frame by fixing pads which are formed on the surface of the circuit substrate to the leads, where a space between a first pad which is formed at an end edge of the circuit substrate and a second pad which is adjacent to the first pad is set narrower than a space between the pads themselves. | 01-08-2009 |
20090086431 | CIRCUIT DEVICE, CIRCUIT MODULE, AND OUTDOOR UNIT - Provided is a circuit device capable of increasing the packaging density and also suppressing the thermal interference between incorporated circuit elements. In a hybrid integrated circuit device, a first circuit board and a second circuit board are incorporated into a case member being arranged in a way that the first circuit board is overlaid with the second circuit board. A first circuit element is arranged on the upper face of the first circuit board and a second circuit element is arranged on the upper face of the second circuit board. In addition, inside the case member, a hollow portion (internal space) which is not filled with a sealing resin is provided, and this hollow portion communicates with the outside through a communicating opening, which is provided by partially opening the case member. | 04-02-2009 |
20090086442 | CIRCUIT MODULE - To improve reliability of a circuit module by improving heat release performance and minimizing thermal influence on a device to be mounted, a base substrate having a first substrate mounted thereon is fitted into a lower portion of casing member, and a second substrate is installed in the upper portion of the casing member so that a spaced area can be provided. In addition, a drive device to be installed on the second substrate is positioned off the center of the second substrate. | 04-02-2009 |
20090086454 | CIRCUIT DEVICE - Provided is a circuit device capable of increasing the packaging density and preventing the thermal interference between circuit elements to be incorporated. In a hybrid integrated circuit device, a first circuit board and a second circuit board are fitted into a case member in a way that the first circuit board is overlaid with the second circuit board. A first circuit element is arranged on the upper surface of the first circuit board and a second circuit element is arranged on the upper surface of the second circuit board. Furthermore, inside the case member, provided is a hollow portion that is not filled with a sealing resin. Such a configuration prevents the second circuit element, which is a microcomputer, from operating unstably due to a heat generated in the first circuit element, which is a power transistor, for example. | 04-02-2009 |
20090086455 | CIRCUIT DEVICE AND METHOD OF MANUFACTURING THE SAME - Provided is a circuit device, in which circuit elements incorporated are electrically connected to each other via a lead so as to achieve both of the enhanced functionality and miniaturization. In a hybrid integrated circuit device, a first circuit board and a second circuit board are incorporated into a case member in a way that a first circuit board is overlaid with a second circuit board. A first circuit element is arranged on the upper face of the first circuit board and a second circuit element is arranged on the upper face of the second circuit board. Leads provided in the hybrid integrated circuit device include a lead connected only to the first circuit element mounted on the first circuit board, a lead connected only to the second circuit element mounted on the second circuit board, and a lead connected to both of the first circuit element and the second circuit element. | 04-02-2009 |
20090103276 | CIRCUIT DEVICE AND METHOD OF MANUFACTURING THE SAME - Provided is a circuit device that allows a plurality of circuit boards, which are stacked each other and arranged in a case member, to be sealed with a resin effectively, and a method of manufacturing the same. In a hybrid integrated circuit device, a first circuit board is overlaid with the second circuit board and both of the boards are fitted into the case member. A first circuit element is arranged on the upper surface of the first circuit board and a second circuit element is arranged on the upper surface of the second circuit board. Furthermore, an opening is provided in a side wall part of the case member, and an internal space of the case member communicates with the outside through this opening. Accordingly, in the resin sealing step, a sealing resin can be injected into the internal space of the case member from the outside through this opening. | 04-23-2009 |
20100284159 | CIRCUIT DEVICE - Provided is a circuit device capable of increasing the packaging density and preventing the thermal interference between circuit elements to be incorporated. In a hybrid integrated circuit device, a first circuit board and a second circuit board are fitted into a case member in a way that the first circuit board is overlaid with the second circuit board. A first circuit element is arranged on the upper surface of the first circuit board and a second circuit element is arranged on the upper surface of the second circuit board. Furthermore, inside the case member, provided is a hollow portion that is not filled with a sealing resin. Such a configuration prevents the second circuit element, which is a microcomputer, from operating unstably due to a heat generated in the first circuit element, which is a power transistor, for example. | 11-11-2010 |
Patent application number | Description | Published |
20100246139 | SEMICONDUCTOR APPARATUS AND HEAT CONDUCTIVE SHEET - A semiconductor apparatus is comprising a circuit board with a semiconductor device surface-mounted on one surface thereof. A heatsink is disposed and fixed with a connection member and separated with a predetermined distance on one side of the circuit board opposite to the surface where the semiconductor device is mounted. A heat conductive sheet is provided between the circuit board and the heatsink and thermally connecting the semiconductor device and the heatsink through the circuit board. The heat conductive sheet is constituted as a laminate of a first member and a second member and one of the first and second members is a ceramic board whereas the other is a resin sheet material having highly heat conductive fillers mixed therein. | 09-30-2010 |
20120081045 | CONTROL DEVICE FOR VOLTAGE CONVERSION DEVICE, VEHICLE INCORPORATING THE SAME, AND CONTROL METHOD FOR VOLTAGE CONVERSION DEVICE - In a voltage conversion device of a motor drive control device, switching-control is performed so as to enlarge an output allowable voltage range of the voltage conversion device restricted by a dead time in a switching operation for an upper arm and a lower arm performing power conversion by a switching operation. Accordingly, restriction in the output voltage from the voltage conversion device, caused by the dead time, can be suppressed. | 04-05-2012 |
20120161900 | ELECTRONIC DEVICE - An electronic device includes a shielding member, an electric circuit, and a filter capacitor. The electric circuit has an output line and is arranged inside the shielding member. The filter capacitor is arranged outside the shielding member to be connected to the output line. | 06-28-2012 |
20130093560 | MAGNETIC CORE AND INDUCTION DEVICE - A magnetic core includes a first core having a recess and a second core, which has a first end portion and a second end portion both held in contact with the first core and forms a closed magnetic path with the first core. The second core is formed of material having a lower magnetic permeability and a higher saturation magnetic flux density than those of the first core. The second end portion includes a distal surface having an area larger than the cross-sectional area of the first end portion in a direction perpendicular to the direction in which a magnetic flux flows in the closed magnetic path. The distal surface of the second end portion is held in contact with the first core and the first end portion is engaged with the recess in the first core. | 04-18-2013 |
20140139310 | WIRING BOARD - This wiring board is provided with an insulating core substrate, a first conductor pattern, a second conductor pattern, and a conductive material. The first conductor pattern and the second conductor pattern are adhered to the insulating core substrate. The second conductor pattern has a first surface and a second surface. The second conductor pattern has a concavity and a through-hole. The opening of the concavity that opens to the first surface and the opening of the through hole that opens to the first surface are interconnected to each other. The first conductor pattern is positioned at the opening of the concavity. The first conductor pattern and the second conductor pattern are electrically connected by means of the conductive material, which fills from the opening of the through hole that opens to the second surface. | 05-22-2014 |
20140151106 | WIRING BOARD AND METHOD FOR MANUFACTURING WIRING BOARD - An electrically conductive path is configured from a first copper plate, a second copper plate, and solder. The first copper plate has a first bent section extended from a first joining section joined to an electrically insulative board and bent toward the rear surface of the electrically insulative board. The second copper plate has a second bent section which is extended from a second joining section joined to the electrically insulative board, is bent toward the front surface of the electrically insulative board, and is disposed so as to cover, together with the first bent section, the inner wall surface of a base-material through-hole. Through-holes are provided in the portions of the second copper plate which face the inside of the base-material through-hole. Solder is filled between the first bent section and the second bent section. | 06-05-2014 |
20140251659 | CIRCUIT BOARD, AND MANUFACTURING METHOD FOR CIRCUIT BOARD - A circuit board, onto which an electronic component is to be mounted, is provided with insulating core substrates and patterned metal plates. The metal plates are bonded to at least one side of the insulating core substrates. The insulating core substrates and the metal plates form a laminated body, in which a gas-vent hole is provided. The gas-vent hole is formed so that when the electronic component is mounted, the gas present between the insulating core substrates and the metal plates expands and is released to a side open to the atmosphere via the gas-vent hole. | 09-11-2014 |
20150228398 | TRANSFORMER - A transformer includes a first substrate, a second substrate, and an insulation sheet. A primary winding and a primary switching element are mounted on the first substrate. A secondary winding formed by a pattern of a metal plate is mounted on the second substrate. The second substrate overlaps the first substrate. The insulation sheet is arranged between the first substrate and the second substrate. | 08-13-2015 |
20150235755 | PLANAR COIL AND MANUFACTURING METHOD FOR TRANSFORMER AND PLANAR COIL - A planar coil includes an effective line segment, which extends over at least one turn and is configured such that a current flows therein, and a dummy line segment, which extends over at least one turn and is configured such that a current does not flow therein. | 08-20-2015 |
20150282313 | WIRING BOARD AND WIRING BOARD PRODUCTION METHOD - A wiring board includes a first substrate including a first surface and a second substrate including a first surface. A solder hole is arranged at least in the first surface of the first substrate. A solder hole is arranged at least in the first surface of the second substrate. The second substrate is coupled to the first substrate. The first substrate and the second substrate are electrically connected with each other. The first surface of the first substrate and the first surface of the second substrate are flush with each other and configured such that a part of one surface of a mask is placed on the first surface of the first substrate and another part of the surface of the mask is placed on the first surface of the second substrate. | 10-01-2015 |
20150289371 | SUBSTRATE (As Amended) - A substrate includes an insulating substrate, a metal layer formed on one surface of the insulating substrate, and an electronic component soldered to the surface of the metal layer. The metal layer is formed of a metal plate. The surface of the metal layer has a soldering area, and a groove portion positioned on the outer periphery of the soldering area. | 10-08-2015 |
20150289375 | MODULE FOR FACILITATING POSITIONING OF ELECTRONIC COMPONENTS - This module includes an insulating substrate having a first surface and a second surface, which are positioned on opposite sides to each other, a first metal layer that is provided on the first surface of the insulating substrate and include a metal plate, a second metal layer provided on the second surface of the insulating substrate, a first circuit board including the insulating substrate, the first metal layer, and the second metal layer, an electronic component joined to the first metal layer, and a positioning portion, which is located on the joint surface between the first metal layer and the electronic component, at which the first metal layer and the electronic component are engaged with each other through a recess-projection relationship. The insulating substrate is located between the second metal layer and a part of the first metal layer where the positioning portion is located. | 10-08-2015 |
20150351239 | SUBSTRATE AND METAL LAYER MANUFACTURING METHOD - This substrate includes an insulating substrate having a first surface and a second surface, and a metal layer of a metal plate bonded to the first surface. The insulating substrate has a through hole. The metal layer includes: a bent section that is inserted through the through hole and bulges from the first surface toward the second surface; and outer periphery sections that are positioned around the bent section and are bonded to the first surface. The bent section has a first end and a second end positioned on opposite sides, and is bent with respect to the outer periphery sections at the first end and the second ends. The outer periphery sections are divided into a first outer periphery section and a second outer periphery section, which are respectively continuous with the first end and the second end of the bent section. | 12-03-2015 |
Patent application number | Description | Published |
20090168453 | SURFACE LIGHT EMITTING DEVICE AND POLARIZATION LIGHT SOURCE - A surface light emitting device includes a polarized light source that emits polarized light; and a light guide plate including a light incident surface on which the polarized light emitted from the polarized light source is made incident, and a light emitting surface that emits light, the light guide plate being made of light transmissive resin having low birefringence in which retardation is one-fourth or less of a wavelength of the polarized light. | 07-02-2009 |
20090264610 | Novel Copolymer of Methacrylic Ester, Composition, Optical Element and Electric Member - A copolymer of (meth)acrylic ester represented by a general formula (1) including a following repeating unit A and repeating unit B. In the general formula (1), R | 10-22-2009 |
20090306321 | Non-Birefringent Optical Resin Material and Optical Member - Provided are an optical resin and an optical member using the same, both orientation birefringence and photoelasticity birefringence of the optical material being deadened and generally eliminated. The optical material consists of a composite constituent system of three or more constituents including a copolymerization system of monomer-element number not smaller than two, combination and constituent ratio of the composite constituent system being set so that both orientation birefringence and photoelasticity birefringence of the optical material are deadened at the same time and 5.0×10 | 12-10-2009 |
20090310976 | Illuminative light communication system - An light source control unit controls the flashing of a light source and the light amount of a light source according to information to be transmitted. Thus, light, which is modulated according to the information to be transmitted, is emitted from the light source. The light emitted from the light source is made to enter an optical fiber to pass therethrough and enter a light-scattering body which scatters and radiates the modulated light incident from the optical fiber. The scattered light serves as illumination light as it is. Furthermore, if the illumination light is decoded by a decoding unit after being received by a photoreceptor unit of a receiving set, then information carried by the illumination light can be received. | 12-17-2009 |
Patent application number | Description | Published |
20120027369 | GI TYPE OPTICAL FIBER AND METHOD FOR MANUFACTURING SAME - A GI type optical fiber of the present invention is a GI type optical fiber having a core component and a cladding component disposed around the outer periphery of the core component, the core component includes a polymer containing at least 55 wt % chlorostyrene monomer and a dopant, and the cladding component includes a polymer of a monomer containing at least 35 wt % methyl methacrylate. It is an object of the present invention to provide a GI type optical fiber in which chlorostyrene is used as the predominant component of the monomer that constitutes the core component, and therefore has excellent transparency and good flexibility, and allows high-speed communication. | 02-02-2012 |
20120034374 | EXTRUSION MATERIAL SUPPLY DEVICE AND OPTICAL TRANSMISSION BODY MANUFACTURING METHOD USING THE SAME - The invention provides an extrusion material supply device suitable for use in melt extrusion molding, and a method for manufacturing an optical transmission body, in which a deterioration of an optical signal transmission loss is extremely small, and productivity intrinsic to an extrusion molding method is provided in combination. An extrusion material supply device | 02-09-2012 |
20120063734 | MULTIMODE GRADED-INDEX PLASTIC OPTICAL FIBER AND METHOD FOR PRODUCING THE SAME - A multimode graded-index plastic optical fiber comprises a cladding and a core. The core has a refractive index which continuously becomes higher as closer to a center of a circular cross-section of the core. The core propagates light of a first mode group, which should be propagated, of incoming light from one end face of the core and emits the light from the other end face of the core. The cladding is provided on a periphery of the core and has a cylindrical cross-section. The cladding has a refractive index which is lower than that of the core. The cladding deflects light of the first mode group at an interface with the core. The core has a first core section, a second core section and a third core section. The first core section contacts an inner circumference of the cladding. The second core section is inside the first core section, and is inside the core. The second core section is a light scattering section which scatters light of a second mode group of the incoming light outside. The second mode group is of a higher order than the first mode group. | 03-15-2012 |
20120114291 | OPTICAL FIBER AND METHOD FOR MANUFACTURING SAME - [Object] The present invention has the object of providing an optical fiber enabling high-speed communication, that exhibits superior transparency and excellent flexibility, and that includes trichloroethyl methacrylate as a main component of the core portion monomer. | 05-10-2012 |
20120229732 | METHOD FOR IMPROVING VISIBILITY OF LIQUID CRYSTAL DISPLAY DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE USING SAME - The present invention provides a liquid crystal display method capable of when a screen thereof is observed through a polarizer such as sunglasses, ensuring an excellent visibility regardless of the angle of observation. In a liquid crystal display device at least having a backlight light source, a liquid crystal cell, and a polarizer disposed on a viewing side of the liquid crystal cell, a white light-emitting diode is used as the backlight light source; and a polymer film having a retardation of from 3,000 nm to 30,000 nm is used so as to be disposed on the viewing side of the polarizer so that an angle between an absorption axis of the polarizer and a slow axis of the polymer film becomes about 45 degrees. | 09-13-2012 |
20130030136 | OPTICAL MATERIAL AND MOLDED PRODUCT THEREOF - Disclosed is an optical material including a cyclic olefin copolymer containing at least a repeating structural unit [A] represented by the general formula (1) and a repeating structural unit [B] represented by the general formula (2) and having a molar ratio [A]/[B] of from 95/5 to 1/99, wherein the absolute value of the ratio ΔOB/ΔF is from 0.001 to 0.250 in which ΔOB represents the amount of a change in the absolute value of the orientation birefringence calculated from the phase difference (nm) at a wavelength of | 01-31-2013 |
20130156375 | OPTICAL COLLIMATOR AND OPTICAL CONNECTOR USING SAME - In order to fix an optical fiber to a desired position in a holding member easily and tightly, provided is an optical collimator ( | 06-20-2013 |
20150029442 | LIQUID CRYSTAL DISPLAY APPARATUS - A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light. | 01-29-2015 |
20150231555 | GAS SEPARATION MEMBRANES BASED ON PERFLUORINATED POLYMERS - Disclosed herein is a process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of perfluorodioxolane monomers. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®. | 08-20-2015 |
20150301384 | LIQUID CRYSTAL DISPLAY APPARATUS - A liquid crystal display apparatus comprises: a liquid crystal display panel including a liquid crystal cell between a first polarizing plate and a second polarizing plate; and a surface light source device having a light source unit and a light guide plate. In a polarized light output from the light guide plate, when the normal direction of a light output surface is defined to be at a polar angle of 90°, and the light guiding direction of the light guide plate is defined to be a direction of an azimuth angle of 0°-180°, a ratio La/Lt of integrated intensity La of output light in ranges where the polar angle is 50° to 80° and the azimuth angle is 135° to 225°, 0° to 45°, and 315° to 360° to integrated intensity Lt of total output light is 0.3 or more. | 10-22-2015 |
Patent application number | Description | Published |
20120033456 | ACTIVE CLAMP DC-DC CONVERTER - An active clamp DC-DC converter includes a transformer having a primary coil and a secondary coil, a main switching device connected in series to the primary coil of the transformer so that the main switching device and the primary coil are connected in parallel to a DC power source, a reset capacitor, a reset switching device connected in series to the reset capacitor so that the reset switching device and the reset capacitor are connected in parallel to the primary coil of the transformer, a rectifying circuit connected to the secondary coil of the transformer, a smoothing circuit connected to the rectifying circuit, and a control circuit adjusting a dead time that elapses from the time when the reset switching device is turned off until the time when the main switching device is turned on, based on a voltage across the main switching device. | 02-09-2012 |
20120161911 | INDUCTION DEVICE - An induction device includes a casing, a coil retainer, a coil that is disposed in the casing and retained to the coil retainer and a core that is disposed in the casing. The coil extends spirally around the core. The core and the coil retainer are fixed to the casing separately. | 06-28-2012 |
20130093553 | INDUCTION DEVICE - An induction device includes a first core made of a ferrite material, a second core made of a material having a lower magnetic permeability than the ferrite material and a higher saturation magnetic flux density than the ferrite material, a cooling device and a coil. The first core and the second core cooperate to form a closed magnetic circuit. The first core includes a contact surface cooled by the cooling device and a first magnetic leg extending so as to intersect with the contact surface and toward the second core. The second core includes a second magnetic leg extending so as to intersect with the contact surface and toward the first core and disposed to be wound around by the coil. | 04-18-2013 |
Patent application number | Description | Published |
20140293202 | OPTICAL FILM AND LIQUID CRYSTAL DISPLAY DEVICE COMPRISING THE OPTICAL FILM - Disclosed is an optical film produced by a method comprising continuously discharging a molten resin on a casting roll through a die lip of an extruder, wherein the molten resin contains a copolymer of (A) 75 to 99% by weight of an (meth)acrylate monomer that, when homopolymerized, has a negative intrinsic birefringence, and (B) 1 to 25% by weight of an (meth)acrylate monomer that, when homopolymerized, has a positive intrinsic birefringence, and a velocity ratio V | 10-02-2014 |
20140309395 | OPTICAL FILM, RESIN MATERIAL FOR OPTICAL FILM, AND IMAGE DISPLAY DEVICE - Disclosed is an optical film comprising a resin material containing a copolymer of 20 to 90% by weight of methyl methacrylate, 10 to 70% by weight of tert-butylcyclohexyl methacrylate represented by formula (I): | 10-16-2014 |
20150369963 | ACRYLIC COPOLYMER, OPTICAL FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE - There are provided an optical film having both low orientation birefringence and low photoelastic birefringence and, at the same time, having excellent transparency and heat resistance, and a polarizing plate including the optical film and a liquid crystal display device. An acrylic copolymer according to the present invention includes as constituent units 0.5 to 35% by mass of N-aromatic substituted maleimide units and 60 to 85% by mass of alkyl (meth)acrylate units having a negative intrinsic birefringence in terms of a homopolymer. | 12-24-2015 |