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Rohm Co Ltd patents


Recent patent applications related to Rohm Co Ltd. Rohm Co Ltd is listed as an Agent/Assignee. Note: Rohm Co Ltd may have other listings under different names/spellings. We're not affiliated with Rohm Co Ltd, we're just tracking patents.

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Semiconductor device with lead terminals having portions thereof extending obliquely

A semiconductor device includes a semiconductor chip and a plurality of leads. The leads include a first lead including a supporting portion for mounting the semiconductor chip, and a projecting portion which projects in a first direction from the supporting portion. A second lead extends in a second direction non-parallel... Rohm Co Ltd

Support terminal integral with die pad in semiconductor package (as amended)

A semiconductor device includes a semiconductor element circuit, a conductive support and a sealing resin. The conductive support includes a die pad, first terminals spaced in a first direction, second terminals spaced in the first direction and opposite to the first terminals in a second direction perpendicular to the first... Rohm Co Ltd

Semiconductor device

An inventive semiconductor device includes: a semiconductor chip including an integrated circuit; a plurality of electrode pads provided on the semiconductor chip and connected to the integrated circuit; a rewiring to which the electrode pads are electrically connected together, the rewiring being exposed on an outermost surface of the semiconductor... Rohm Co Ltd

Bidirectional zener diode

A bidirectional Zener diode of the present invention includes a semiconductor substrate of a first conductivity type, a first electrode and a second electrode which are defined on the semiconductor substrate, and a plurality of diffusion regions of a second conductivity type, which are defined at intervals from one another... Rohm Co Ltd

Overcurrent protection circuit

An overcurrent protection circuit includes a current control part configured to control conductance of a transistor so as to limit an output current flowing when the transistor is turned on to a predetermined upper limit or less, and a duty control part configured to forcibly turning on/off the transistor at... Rohm Co Ltd

Power circuit and power module using misfet having control circuit disposed between gate and source

The power circuit includes: a main substrate; a first electrode pattern disposed on the main substrate and connected to a positive-side power terminal P; a second electrode pattern disposed on a main substrate and connected to a negative-side power terminal N; a third electrode pattern disposed on the main substrate... Rohm Co Ltd

Lamp driving circuit

A lamp driving circuit for driving a lamp part, includes a correction part configured to receive a first control signal for driving the lamp part with a predetermined brightness, to receive duty information indicative of a ratio of a supply voltage for operating the lamp part and a voltage across... Rohm Co Ltd

Light detection device and electronic apparatus

A light detection device includes a semiconductor substrate, a signal detection light receiving portion that is formed in the semiconductor substrate, an infrared light receiving portion that is formed in the semiconductor substrate, a first color filter that covers the signal detection light receiving portion and that has a first... Rohm Co Ltd

Power module and motor drive circuit

A power module includes a first die pad, a first switching element, a second die pad, a second switching element, an integrated circuit element, an encapsulation resin, and a lead frame assembly. The encapsulation resin encapsulates the first switching element, the second switching element, and the integrated circuit element. The... Rohm Co Ltd

Discrete capacitor and manufacturing method thereof

A discrete capacitor of the present invention includes a substrate having a front surface portion, an impurity diffusion layer formed on the front surface portion of the substrate, an oxide film formed on the substrate and having a first opening to selectively expose the impurity diffusion layer, a dielectric film... Rohm Co Ltd

Switching control circuit, switching power supply device and electronic apparatus

A switching control circuit includes: a feedback control part that turns on/off an output switch element so that an output voltage of a switching output circuit becomes to be a target value; a synchronous control part that turns on/off a synchronous rectification element; and a reverse current detection part that... Rohm Co Ltd

Chip part and manufacturing method thereof

A chip part includes a substrate having a first main surface on one side thereof and a second main surface on the other side thereof, a functional device famed at a first main surface side of the substrate, an external terminal formed at the first main surface side of the... Rohm Co Ltd

Inkjet printing head

An inkjet printing head 1 includes an actuator substrate, having an ink flow passage that includes a pressure chamber, a movable film formation layer, including a movable film, disposed on the pressure chamber and defining a top surface portion of the pressure chamber, a piezoelectric element 9, formed on the... Rohm Co Ltd

Semiconductor device

A first power supply terminal P is provided with an internal wiring connection portion 31A, an upright portion 31B which is joined to the internal wiring connection portion 31A, an inclined portion 31C which is joined to the upright portion 31B and an external wiring connection portion 31D which is... Rohm Co Ltd

Semiconductor device

A semiconductor device includes a first overvoltage detection unit including a first comparator arranged to output a first detection signal based on a first divided voltage after dividing an output voltage of a power supply circuit by first resistors disposed externally and a second overvoltage detection unit including second resistors... Rohm Co Ltd

Semiconductor device

A semiconductor device includes: a diagnosis portion which diagnoses, when the device is started up, whether an abnormality occurs in a component for setting that is externally connected; and a control portion which stops the startup of the device when the diagnosis portion diagnoses that an abnormality occurs, the diagnosis... Rohm Co Ltd

Visual acuity test device and visual acuity test system

A portable visual acuity examination device comprises a mounting unit that can be mounted in front of eyes either using or not using eyeglasses, a visual target displaying unit that uses an organic EL display panel, a display controlling unit that changes the visual target displayed on the displaying unit,... Rohm Co Ltd

Semiconductor integrated circuit for monitoring switch, electronic control unit and vehicle

A semiconductor integrated circuit for monitoring a switch, including: a first detection part that detects a state of a first switch; a second detection part that detects a state of a second switch; a sub-voltage monitoring part that monitors whether the sub-voltage is within a predetermined range; a switch monitoring... Rohm Co Ltd

Switching power supply device

A switching power supply device having: a power supply terminal VCC connected to one end of an output capacitor Co2; a high-voltage terminal VH connected to the input side of an input voltage Vdc; and a starting circuit 101 provided between the power supply terminal VCC and the high-voltage terminal... Rohm Co Ltd

Signal transmission circuit and vehicle

A signal transmission circuit which transmits N (N is a natural number of 2 or more) input signals includes a transmission signal generation portion, 2N transmission portions and an output portion. The transmission signal generation portion generates 2N transmission signals according to the N input signals. The 2N transmission portions... Rohm Co Ltd

Electronic component and manufacturing method thereof

An electronic component includes a substrate having a principal surface, a chip arranged at the principal surface of the substrate, a sealing resin sealing the chip on the principal surface of the substrate, and a heat dissipation member formed on the sealing resin.... Rohm Co Ltd

Semiconductor light emitting device

A semiconductor light emitting device includes a conductive substrate and a first metal layer disposed on the substrate. The first metal layer is formed so as to be electrically connected with the substrate, and the first metal layer includes an Au based material. A joining layer is formed on the... Rohm Co Ltd

Semiconductor light-emitting device and manufacturing the same

A semiconductor light-emitting device includes a base, a light-emitting element and a sealing resin. The base includes an obverse surface and a reverse surface spaced in a first direction, first side surfaces spaced in a second direction crossing the first direction, and second side surfaces spaced in a third direction... Rohm Co Ltd

Power receiving apparatus and control circuit thereof

A power receiving apparatus receives a bus voltage from a power supply apparatus via a cable, and supplies the bus voltage to a load circuit. A power receiver side controller receives, as a power supply, a voltage VADP, of a bus line that is more toward a bus switch. The... Rohm Co Ltd

Non-contact power supply system

Disclosed is a non-contact power supply system wherein power is transmitted by means of a magnetic field resonance method from a power transmission device, which includes a power transmission-side resonant circuit, to a power reception device, which includes a power reception-side resonant circuit. The power transmission device detects, at the... Rohm Co Ltd

Electronic component and manufacturing method thereof

An electronic component includes a substrate including a first principal surface, a second principal surface positioned on a side opposite to the first principal surface, a first side surface that connects the first principal surface and the second principal surface and that extends along a first direction, a second side... Rohm Co Ltd

Thermal print head

A thermal print head includes a semiconductor substrate, a resistor layer with heat generating portions arranged in the main scanning direction, a wiring layer included in a conduction path for energizing the heat generating portions, and a protective layer covering the resistor layer and the wiring layer. The semiconductor substrate... Rohm Co Ltd

Method of manufacturing semiconductor device and semiconductor device

An aspect of the present disclosure provides a method of manufacturing a semiconductor device. The method includes: preparing a first semiconductor element and a second semiconductor element, each of the first semiconductor element and the second semiconductor element having an element main surface and an element back surface that face... Rohm Co Ltd

Semiconductor device and manufacturing semiconductor device

A semiconductor device of the present invention includes a semiconductor layer, a gate trench that defines a source region of a first conductivity type in the semiconductor layer, a channel region of a second conductivity type of a lower part of the source region, a source trench that passes through... Rohm Co Ltd

Semiconductor device

A semiconductor device includes a semiconductor layer having a first principal surface on one side thereof and a second principal surface on the other side thereof, a channel region of a first conductivity type formed at a surface layer portion of the first principal surface of the semiconductor layer, an... Rohm Co Ltd

Semiconductor device having super junction metal oxide semiconductor structure and fabrication the same

A semiconductor device includes: a first base layer; a drain layer disposed on the back side surface of the first base layer; a second base layer formed on the surface of the first base layer; a source layer formed on the surface of the second base layer; a gate insulating... Rohm Co Ltd

Schottky barrier diode and a manufacturing the same

A Schottky metal is in Schottky-contact with a center portion of a surface of an epitaxial layer. A peripheral trench is formed by digging from the surface of the epitaxial layer on a boundary portion between an active region where the Schottky metal is in Schottky-contact with the surface of... Rohm Co Ltd

Magnetoelectric converting element and module utilizing the same

A magnetoelectric converting element includes a substrate, a magnetosensitive layer, a first insulating layer, an underlying conductive layer, a second insulating layer, and a terminal conductor. The magnetosensitive layer is formed on the substrate. The first insulating layer is formed with first opening for exposing a part of the magnetosensitive... Rohm Co Ltd

Insulated dc/dc converter and primary side controller thereof, control method, and power adaptor and electronic device using the same

A primary side controller for controlling a switching transistor on a primary side of an insulated DC/DC converter, includes: a low voltage state detecting circuit configured to detect a low voltage state in which an output voltage of the DC/DC converter is lower than a predetermined value; and a pulse... Rohm Co Ltd

Led lamp

An LED lamp A includes a plurality of LED modules 2 each including an LED chip 21, and a support member 1 including a support surface 1a on which the LED modules 2 are mounted. The LED modules 2 include a plurality of kinds of LED modules, or a first... Rohm Co Ltd

01/04/18 / #20180003500

Offset calculation device and azimuth sensor therewith

For triaxial magnetic detection data sequentially acquired as data points in a triaxial coordinate system, an offset calculation unit 30 calculates virtual data points P1′-P6′ by evenly parallel-translating each of data points P1-P7 so that a reference data point P7, for example, arbitrarily chosen from the data points P1-P7 coincides... Rohm Co Ltd

01/04/18 / #20180003556

Optical sensor and correcting same

An optical sensor (10) includes a first switch (SW1) and a second switch (SW2), these switches are switched between a first step and a second step and thus the coupling of light receiving portions (photodiodes) and three analog-to-digital converters (ADCs) is switched. In the first step of the switch, photocurrents... Rohm Co Ltd

01/04/18 / #20180003564

Reflective detection device

A reflective detection device, includes: oscillation element oscillating a terahertz wave; exit part from which the terahertz wave exits; incident part to which the terahertz wave reflected from a detection target is incident; and detection element detecting the terahertz wave incident to the incident part, wherein the exit part and... Rohm Co Ltd

01/04/18 / #20180003808

Ultrasonic sensor, and controlling a burst signal

An ultrasonic sensor 1000 has a transmission/reception processing circuit 100, and the transmission/reception processing circuit 100 has a burst signal transmission circuit 1 that generates and transmits burst signals S0, and a signal processing circuit 7 that processes reception signals received by a piezoelectric element 4. The signal processing circuit... Rohm Co Ltd

01/04/18 / #20180005732

Chip parts

A chip part is provided that includes a substrate in which an element region and an electrode region are set, an insulating film (a first insulating film and a second insulating film) which is formed on the substrate and which selectively includes an internal concave/convex structure in the electrode region... Rohm Co Ltd

01/04/18 / #20180005908

Semiconductor device

A semiconductor device includes: a semiconductor element; a first bonding pad formed on a surface of the semiconductor element; a test pad formed on the surface of the semiconductor element separately from the first bonding pad and configured to be visually distinguishable from the first bonding pad; and a first... Rohm Co Ltd

01/04/18 / #20180005981

Semiconductor device

A semiconductor device according to the present invention includes a semiconductor chip, an electrode pad made of a metal material containing aluminum and formed on a top surface of the semiconductor chip, an electrode lead disposed at a periphery of the semiconductor chip, a bonding wire having a linearly-extending main... Rohm Co Ltd

01/04/18 / #20180006114

Semiconductor device including crystal defect region and manufacturing the same

A semiconductor device includes: an n type semiconductor layer including an active region and an inactive region; an element structure formed in the active region and including at least an active side p type layer to form pn junction with n type portion of the n type semiconductor layer; an... Rohm Co Ltd

01/04/18 / #20180006123

Semiconductor device having a junction portion contacting a schottky metal

A semiconductor device according to the present invention includes a first conductive-type SiC semiconductor layer, and a Schottky metal, comprising molybdenum and having a thickness of 10 nm to 150 nm, that contacts the surface of the SiC semiconductor layer. The junction of the SiC semiconductor layer to the Schottky... Rohm Co Ltd

01/04/18 / #20180006161

Chip part and making the same

A chip part includes a substrate, an element formed on the substrate, and an electrode formed on the substrate. A recess and/or projection expressing information related to the element is formed at a peripheral edge portion of the substrate.... Rohm Co Ltd

01/04/18 / #20180006569

Insulated synchronous rectification dc/dc converter

A synchronous rectification controller configured to control a synchronous rectification transistor is provided on the secondary side of an insulated synchronous rectification DC/DC converter. A DRAIN pin receives the drain voltage VDS2 of the synchronous rectification transistor. A pulse generator generates a pulse signal S11 based on the voltage at... Rohm Co Ltd

01/04/18 / #20180007183

Projector

The present disclosure describes a projector which has: an image projection portion; an image provision portion that provides a projection image to the image projection portion; a deviation movement detection portion that detects a deviation movement of the image projection portion; and an image process portion that based on detection... Rohm Co Ltd

12/28/17 / #20170373688

Electronic device

An electronic device includes: a first housing and a second housing provided to be capable of being displaced between a first state in which the first major surfaces thereof face each other and a second state in which the second major surfaces thereof face each other; a magnetic detection part... Rohm Co Ltd

12/21/17 / #20170361614

Inkjet apparatus and manufacturing inkjet apparatus

An inkjet apparatus capable of achieving a good withstand voltage in a movable part of a piezoelectric element is provided. An inkjet apparatus is provided, wherein the inkjet apparatus comprises: an actuator substrate, partitioning a cavity for accumulating ink; a vibrating film, supported by the actuator substrate and partitioning the... Rohm Co Ltd

12/21/17 / #20170365655

Chip resistor and electronic equipment having resistance circuit network

A compact and refined chip resistor, with which a plurality of types of required resistance values can be accommodated readily with the same design structure, was desired. The chip resistor is arranged to have a resistor network on a substrate. The resistor network includes a plurality of resistor bodies arrayed... Rohm Co Ltd

12/21/17 / #20170365994

Insulated synchronous rectification type dc/dc converter, and power adaptor and electronic device

An isolated synchronous rectification type DC/DC converter, includes: a transformer including primary and secondary windings; a switching transistor connected to the primary winding; a synchronous rectifying transistor installed between the secondary winding and a ground line on the secondary side; a photocoupler including a light emitting device and a light... Rohm Co Ltd

12/21/17 / #20170366048

Wireless power transmitter

A transmission antenna includes a resonance capacitor and a transmission coil coupled in series. A driver includes a bridge circuit that applies a driving voltage to the transmission antenna. A current sensor detects a current IS that flows through the bridge circuit. A foreign object detector detects the current IS... Rohm Co Ltd

12/21/17 / #20170366102

Insulated dc/dc converter, and power adaptor and electronic device using the same

An insulated DC/DC converter includes: a transformer; a switching transistor; a rectifier circuit; a photocoupler; a feedback circuit configured to drive a light emitting element of the photocoupler such that an output voltage of the DC/DC converter approaches a target voltage; a primary side controller having a feedback terminal which... Rohm Co Ltd

12/14/17 / #20170357517

Switch state determining device

A switch state determining device, includes: an external terminal to which a switch is externally attached; a constant current generating part configured to generate a constant current and flow the constant current through the external terminal; a voltage comparing part configured to compare a terminal voltage of the external terminal... Rohm Co Ltd

12/07/17 / #20170351285

Linear power supply and electronic apparatus using same

A linear power supply (1) includes a P-channel (or PNP) first output transistor (10) connected between an input terminal of an input voltage (Vin) and an output terminal of an output voltage (Vout), an N-channel (or NPN) second output transistor (20) connected in parallel to the first output transistor (10),... Rohm Co Ltd

12/07/17 / #20170352781

Semiconductor light emitting element and manufacturing method thereof

A semiconductor light emitting element is disclosed. The element includes a substrate including a first surface, a second surface opposite to the first surface, and a side surface that connects the first surface and the second surface; a semiconductor layer formed on the first surface of the substrate and configured... Rohm Co Ltd

12/07/17 / #20170353113

Power delivery device, ac adapter, ac charger, electronic apparatus and power delivery system

A PD device comprises: a DC/DC converter disposed between an input and a VBUS output; a primary-side controller configured to control an input current of the DC/DC converter; a secondary-side controller coupled to a plurality of control inputs, the secondary-side controller configured to executed a signal conversion of control input... Rohm Co Ltd

12/07/17 / #20170353131

Motor control device

A motor control device includes an energization controller that generates energization control signals of a bridge driver, an ADC that samples and converts analog feedback voltages corresponding to output voltages of the bridge driver into digital feedback signals, and a zero-crossing detector that receives the feedback signals so as to... Rohm Co Ltd

12/07/17 / #20170353797

Stereo earphone

There is provided is a stereo headphone provided with a pair of earphones having a cartilage conduction unit, a sheath unit connected to the cartilage conduction unit, and a piezoelectric bimorph of a vibration source connected to the cartilage conduction unit covered by the sheath unit without making contact with... Rohm Co Ltd

11/30/17 / #20170341638

Intelligent power module, electric vehicle or hybrid vehicle, and assembling intelligent power module

An intelligent power module includes: a heat radiation device; an attachment frame disposed on a mounting surface of the heat radiation device; a power semiconductor module mounted on the attachment frame and configured to seal a semiconductor device; and a drive circuit part mounted on the power semiconductor module via... Rohm Co Ltd

11/30/17 / #20170345800

Led module

An LED module includes: a substrate having a main surface and a back surface which face in opposite directions from each other in a thickness direction; a first LED chip including a first electrode pad bonded to a surface facing the same direction as the main surface; a first wire... Rohm Co Ltd

11/30/17 / #20170345887

Semiconductor device

A semiconductor device includes: a semiconductor substrate with a first conductivity type; a semiconductor layer with a second conductivity type formed on the semiconductor substrate; a drain region with the second conductivity type and a source region with the second conductivity type formed to be spaced apart from each other... Rohm Co Ltd

11/30/17 / #20170346344

Wireless power receiver

A reception antenna includes a reception coil which receives a power signal. A rectification circuit rectifies an alternating current flowing to the reception antenna. A smoothing capacitor smoothes an output of the rectification circuit. A waveform stabilizer is enabled when a power receiver satisfies a predetermined condition and shifts a... Rohm Co Ltd

11/30/17 / #20170346402

Synchronous rectification dc/dc converter

A pulse modulator generates a pulse signal, such that an output signal of a DC/DC converter approaches a target value. When a detection value of a coil current of the DC/DC converter crosses a threshold for zero crossing, a reverse flow detection circuit asserts a reverse flow detection signal and... Rohm Co Ltd

11/23/17 / #20170336825

Digital signal processing circuit, audio device, and electronic device

A signal processing circuit includes: a clock input terminal configured to receive a master clock from outside: a signal processing part configured to perform a signal processing based on the master clock; an interface circuit configured to communicate with an external circuit; and a clock detection circuit configured to determine,... Rohm Co Ltd

Patent Packs
11/23/17 / #20170336844

Power supply apparatus and power receiving apparatus

A power supply apparatus supports USB-PD (Universal Serial Bus-Power Delivery) specification. A bus voltage VBUS is transmitted via a bus line. A first power supply circuit generates a first bus voltage having a first voltage level. A second power supply circuit generates a second bus voltage having a second voltage... Rohm Co Ltd

11/23/17 / #20170337963

Light emitting element driving semiconductor integrated circuit, light emitting element driving device, light emitting device, and vehicle

A light emitting element driving semiconductor integrated circuit constitutes at least a part of a light emitting element driving device arranged to drive a series connection unit including a plurality of light emitting elements. The light emitting element driving semiconductor integrated circuit includes a single-element short-circuit detection unit arranged to... Rohm Co Ltd

11/23/17 / #20170338333

Nitride semiconductor device and fabrication method therefor

A nitride semiconductor device includes an electron transit layer (103) that is formed of a nitride semiconductor, an electron supply layer (104) that is formed on the electron transit layer (103), that is formed of a nitride semiconductor whose composition is different from the electron transit layer (103) and that... Rohm Co Ltd

11/23/17 / #20170338335

High-speed diode and manufacturing the same

A high-speed diode includes an n-type semiconductor layer and a p-type semiconductor layer which is laminated on the n-type semiconductor layer, where a pn junction is formed in a boundary portion between the n-type semiconductor layer and the p-type semiconductor layer, and crystal defects are formed such that the frequency... Rohm Co Ltd

11/23/17 / #20170338336

Semiconductor device

A semiconductor device includes a semiconductor layer that has a transistor structure including a p type source region, a p type drain region, an n type body region between the p type source region and the p type drain region, and a gate electrode facing the n type body region... Rohm Co Ltd

11/23/17 / #20170338354

Semiconductor device

A semiconductor device including a semiconductor layer, a drain region formed at a surface region of the semiconductor layer, and a source/gate region including a source region and a gate region, which are alternatively arranged so as to be electrically connected to each other. The device further includes a resistive... Rohm Co Ltd

11/23/17 / #20170338622

Semiconductor laser device and making the same

The present invention provides a semiconductor laser device for improving temperature characteristics of waveguide structures and realizing stable light emitting patterns and high output, and a method for making the same. The semiconductor laser device (1) comprises: an n-type clad layer (5) laminated on a substrate (2); an active layer... Rohm Co Ltd

11/23/17 / #20170338821

Cmos output circuit

A CMOS output circuit includes a first P-MOSFET having a source connected to a power supply terminal, a drain connected to an output terminal, and a back gate connected to a first potential terminal; a first N-MOSEFET having a drain connected to the output terminal, a source connected to the... Rohm Co Ltd

11/23/17 / #20170338831

A/d conversion circuit

An A/D conversion circuit includes a reference voltage source to generate a calibration voltage, a multiplexer to receive an analog signal and the calibration voltage, and output the analog signal selected in a normal mode and the calibration voltage selected in a calibration mode or a self-diagnosis mode, an A/D... Rohm Co Ltd

11/23/17 / #20170339035

Sensor network system and operational the same

A sensor network system including: a sensor object; a plurality of sensor node communication terminals mounted on the sensor object, and respectively including a plurality of sensor elements each having a function equivalent to one another; a data server configured to store sensor information of the plurality of the sensor... Rohm Co Ltd

11/23/17 / #20170339401

Image monitoring apparatus, image display system, and vehicle

An image monitoring apparatus, includes: an abnormality detecting part configured to detect an abnormal output from an imaging device based on frame data input to a display driving device that displays the frame data output from the imaging device on a display device; and a signal output part configured to... Rohm Co Ltd

11/16/17 / #20170329362

On chip temperature independent current generator

An on chip temperature independent current generator for generating a temperature independent current, said temperature independent current generator including: an on chip current generator having an output to provide an electrical current being proportional to an absolute temperature of a chip in which the temperature independent current generator is embedded;... Rohm Co Ltd

11/16/17 / #20170330877

Semiconductor device

A semiconductor device includes: an FET structure that is formed next to a looped trench on a semiconductor substrate and that has an n+ emitter region and an n− drain region facing each other in the depth direction of the looped trench across a p-type base region; a p-type floating... Rohm Co Ltd

11/16/17 / #20170330994

Light-emitting element

wherein λ is the light-emitting wavelength of the light-emitting element 4, and n is the refractive index of the transparent electrode layer 6.... Rohm Co Ltd

11/16/17 / #20170331004

Semiconductor light emitting device

A semiconductor light emitting device includes a substrate having a first major surface and a second major surface, a semiconductor layer that includes a first semiconductor layer of a first conductive type formed on the first major surface of the substrate, a light emitting layer formed on the first semiconductor... Rohm Co Ltd

Patent Packs
11/16/17 / #20170331010

Led module

An LED module is provided with a lead, an LED chip mounted on the obverse surface of the lead, and a case covering at least a part of the lead. The case has a side wall surrounding the LED chip. The lead includes a thin extension whose bottom surface is... Rohm Co Ltd

11/16/17 / #20170331272

Ground fault detection circuit, abnormality detection circuit, light emitting device, vehicle

A light emitting device includes a series connection unit constituted of N light emitting elements, a light emitting element driving circuit having an output terminal connected to an anode of the series connection unit, N short-circuit switches respectively connected in parallel to the light emitting elements, and a switch control... Rohm Co Ltd

11/16/17 / #20170332448

Supply circuit for a led controller

A supply circuit adapted to provide a continuous power supply for a string of serially connected light emitting elements driven with a current source, said supply circuit including: a voltage supply capacitor connected to said string and being adapted to provide a supply voltage for a driving control unit configured... Rohm Co Ltd

11/16/17 / #20170332452

Method and reducing flickering of emitted light

A light emitting apparatus including: a light emitting array having at least one light emitting string of serial connected light emitting elements, wherein a bypass switch is connected in parallel to each light emitting element of said light emitting string; and a driving control unit controlling a shift timing of... Rohm Co Ltd

11/09/17 / #20170323311

Information collection system

An information collection system 1 has: a stand-alone-power-type transmitter 10 capable of moving together with a mobile entity (purchaser) A1, the transmitter 10 spontaneously and intermittently transmitting a transmitter ID at a timing corresponding to the distance of movement of the mobile entity A1; a plurality of receivers 20 provided... Rohm Co Ltd

11/09/17 / #20170325305

Lighting device

A lighting device includes light emitting element groups (HSB) including a light emitting element group (HS2) that emits light when being applied with a voltage (VH2), and a light emitting element group (HS12) that emits light when being applied with a voltage (VH12) higher than VH2, the light emitting element... Rohm Co Ltd

11/02/17 / #20170314742

Lighting device

A lighting device includes a substrate having a side extending straight in a first direction and a first LED chip supported by the substrate and having a first anode terminal and a first cathode terminal. The lighting device includes a second LED chip and a third LED chip supported by... Rohm Co Ltd

11/02/17 / #20170316997

Semiconductor device and manufacturing the same

A semiconductor device includes a predetermined number of leads, a semiconductor element electrically connected to the leads and supported by one of the leads, and a sealing resin that covers the semiconductor element and a part of each lead. Each lead includes some portions exposed from the sealing resin. A... Rohm Co Ltd

11/02/17 / #20170317000

Electronic component and manufacturing method thereof

An electronic component includes a substrate that has a first principal surface and a second principal surface, a chip that includes a mounting surface on which a plurality of terminal electrodes are formed and a non-mounting surface positioned on a side opposite to the mounting surface and that is arranged... Rohm Co Ltd

11/02/17 / #20170317068

Semiconductor device

A semiconductor device includes a semiconductor substrate, an element region including an active element formed at the semiconductor substrate, a channel stopper formed in an outer peripheral region of the semiconductor substrate, and an insulating film that covers a surface of the semiconductor substrate and that has a first contact... Rohm Co Ltd

11/02/17 / #20170317667

Device and controlling slew rate

A slew rate control device for controlling a slew rate, includes: a setting part configured to set a voltage value used to determine the slew rate, and a control part configured to control the slew rate, based on the voltage value set by the setting part, so that the slew... Rohm Co Ltd

10/26/17 / #20170305326

Light-emitting element driving semiconductor integrated circuit, light-emitting element driving device, light-emitting device, and vehicle

A light-emitting element driving semiconductor integrated circuit constitutes at least part of a light-emitting element driving device that is configured to drive a first and a second light source when the first light source is not short-circuited and drive the second light source when the first light source is short-circuited... Rohm Co Ltd

10/26/17 / #20170309404

Chip capacitor

A chip capacitor includes a substrate having a main surface, a first conductive film including a first connecting region and a first capacitor forming region and formed on the main surface of the substrate, a dielectric film covering the first capacitor forming region of the first conductive film, a second... Rohm Co Ltd

10/26/17 / #20170309592

Semiconductor device

A semiconductor device includes a base member, a wiring portion, a semiconductor element, and a resin package. The base member has an obverse surface, a reverse surface, and a side surface connecting the obverse surface and the reverse surface. The semiconductor element is electrically connected to the wiring portion and... Rohm Co Ltd

10/26/17 / #20170309602

Semiconductor light emitting device

A semiconductor light emitting device includes an LED chip, which includes an n-type semiconductor layer, active layer, and p-type semiconductor layer stacked on a substrate. The LED chip further includes an anode electrode connected to the p-type semiconductor, and a cathode connected to the n-type semiconductor. The anode and cathode... Rohm Co Ltd

10/26/17 / #20170310323

Power semiconductor drive circuit, power semiconductor circuit, and power module circuit device

A power semiconductor drive circuit includes a parallel circuit connected to a gate of a power semiconductor element and constituted by two transistors for setting gate resistance of the power semiconductor element; a gate voltage monitoring circuit connected to the gate of the power semiconductor element and the parallel circuit,... Rohm Co Ltd

10/19/17 / #20170297345

Liquid container, liquid remaining amount detection circuit of liquid container, liquid remaining amount detection method, liquid container identification method, ink mounting unit, printer, and print system

A liquid container for accommodating a liquid includes: a plurality of detection electrodes mounted on the liquid container and connected to a detection circuit installed outside the liquid container, wherein the plurality of detection electrodes detects a tilt of the liquid container.... Rohm Co Ltd

10/19/17 / #20170299543

Nitrogen oxide based gas sensor, oxygen pump, gas sensor apparatus, manufacturing gas sensor apparatus, and sensor network system

A nitrogen oxide based gas sensor includes: a substrate provided with a beam structure having a MEMS structure; a heater disposed on the substrate; a lower electrode disposed on the heater, a solid electrolyte layer disposed on the lower electrode; an upper electrode disposed on a surface of the solid... Rohm Co Ltd

10/19/17 / #20170300148

Capacitance measurement circuit

A capacitance measurement circuit measures each of multiple electrostatic capacitances. Charger circuits respectively correspond to a sensor capacitance Cs. Each charger circuit charges the corresponding sensor capacitance Cs so as to generate a detection current Is that corresponds to a charging current ICHG. A current averaging circuit is configured to... Rohm Co Ltd

10/19/17 / #20170301436

Chip resistor

A chip resistor including, a substrate having a main surface, a first resistance circuit formed at the main surface of the substrate, a second resistance circuit formed at the main surface of the substrate apart from the first resistance circuit, a common internal electrode formed at the main surface of... Rohm Co Ltd

10/19/17 / #20170301612

Semiconductor device and manufacturing the same

A semiconductor device includes a plurality of islands, each having an outer surface including an upper surface and end surfaces, semiconductor chips, above the respective islands, a bonding material, between the islands and the semiconductor chips, and plating layers, formed on the outer surfaces of the islands, and with at... Rohm Co Ltd

10/19/17 / #20170301640

Semiconductor device with a semiconductor chip connected in a flip chip manner

A semiconductor device includes a wiring board, a semiconductor chip, and a connecting member provided between a surface of the wiring board and a functional surface of the semiconductor chip. The connecting member extends a distance between the wiring board surface and the functional surface. A sealing material seals a... Rohm Co Ltd

10/19/17 / #20170301661

Optical apparatus

An optical apparatus includes a substrate 1, a wiring pattern 8 formed on the substrate 1, a light-receiving element 3 and a light-emitting element 2 provided on the substrate 1 and spaced apart from each other in a direction x, a light-transmitting resin 4 covering the light-receiving element 3, a... Rohm Co Ltd

10/19/17 / #20170302060

Igniter

An igniter includes a switch element and a switch control apparatus. An ignition signal IGT is input to an input line of the switch control apparatus. A high-frequency filter removes high-frequency noise from the input line. A voltage comparator compares an output voltage VFIL of the high-frequency filter with a... Rohm Co Ltd

10/19/17 / #20170302186

Insulated dc/dc converter

A primary-side controller comprises a feedback (FB) terminal coupled to a light-receiving element of a photocoupler so as to receive a feedback signal from the photocoupler, and a current detection (CS) terminal that receives a current detection signal that corresponds to a voltage drop across a sense resistor RS. The... Rohm Co Ltd

10/19/17 / #20170302285

Clock generating device, electronic circuit, integrated circuit and electrical machinery

The present invention is related to a clock generating device for generating an internal clock signal having a frequency correlated with a clock frequency of an external oscillator when the clock frequency of the external oscillator is not specified in advance. A clock generating device 105 comprises a memory 134... Rohm Co Ltd

10/19/17 / #20170302320

Wristband-type handset and wristband-type alerting device

Proposed is a bracelet-type transmission/reception device comprising: a cartilage conduction vibration source provided in a portion to be attached to a wrist; a speaker; a variable directional microphone; and a control unit which sets the directivity of the variable directional microphone to the back side of a hand when the... Rohm Co Ltd








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