Sharp Kabushiki Kaisha Corporation

Nanosys, Inc.

Other

Akihide Shibata

Hiroshi Iwata

Masaru Nawaki

Yoshinao Morikawa

Yoshifumi Yaoi

Yasuaki Iwase

Seizo Kakimoto

Kenji Komiya

Takeshi Shiomi

Shuji Wakaiki

Takayuki Ogura

Tetsu Negishi

Kohtaroh Kataoka

Masaru Nomura

Masayuki Nakano

Akira Takahashi

Nobuaki Matsuoka

Kei Tokui

Koji Hamaguchi

David P Stumbo

James M Hamilton

Katsumasa Fujii

Kouichirou Adachi

Hiroki Igarashi

Yasunobu Okada

J Wallace Parce

Paul John Schuele

Xiangfeng Duan

Hiroshi Ohki

Francisco A Leon

Jeffrey L Miller

Kouichiro Adachi

Samuel Edward Martin

Cheri X Y Pereira

Kotaro Kataoka

Fumiyoshi Yoshioka

Takuya Sato

Akira Sakai

Yutaka Takafuji

Yoshiji Ohta

Kenichi Tanaka

Nobuaki Teraguchi

Erik Freer

Satoshi Morishita

Nobutoshi Arai

Shinichi Handa

Tomohisa Okuno

Kohichiroh Adachi

Keiji Watanabe

Kohji Hamaguchi

Kozo Hoshino

Kohichiro Adachi

Yukio Yasuda

Shigeaki Zaima

A nanofiber sensor includes a plurality of pairs of electrodes and nanofibers respectively bridging the gaps between the electrodes in the pair, between the electrodes in the pair, and between the electrodes in the pair. At least two pairs of electrodes of the plurality of pairs of electrodes are different from each other in structures.

Nanofiber sensor

A power supply includes a primary circuit connected to a primary winding of a transformer and a secondary circuit connected to a secondary winding of the transformer. The primary circuit includes MOSFETs, and the secondary circuit includes MOSFETs configured to rectify power transmitted from a primary side of the transformer and includes a capacitor configured to store the rectified power. The secondary circuit performs a discharge operation of discharging the capacitor and causing a current to flow into the secondary winding of the transformer to reduce a source-drain voltage of the MOSFETs before the MOSFETs are switched from an off state to an on state. Thus, the power supply having a high power-conversion efficiency even during low output is provided.

Power supply and power supply unit

A DC-DC converter includes a transformer, a switching circuit provided on the primary side of the transformer, and a rectifier circuit provided on the secondary side of the transformer. The rectifier circuit includes a first rectifier part that is serially connected body of a first transistor and a second transistor having a first electrode connected to a second electrode of the first transistor. The first and second transistors each include a parasitic diode connected forward between the second and first electrode, and the withstanding voltage between the first and second electrodes of the first transistor is higher than the withstanding voltage between the first and second electrodes of the second transistor.

DC-DC converter, and solar power controller and mobile body using same

A configuration of a display device capable of color display is obtained. The display device includes a plurality of rod-shaped light-emitting elements each of which includes a semiconductor and which emit light beams having wavelength distributions different from each other, and alignment electrodes (). The alignment electrodes () include a first electrode pair (), a second electrode pair (), and a third electrode pair (). The plurality of rod-shaped light-emitting elements include a first rod-shaped light-emitting element, which is arranged so that one end of the first rod-shaped light-emitting element is adjacent to one electrode of the first electrode pair while the other end is adjacent to the other electrode of the first electrode pair, a second rod-shaped light-emitting element, which is arranged so that one end of the second rod-shaped light-emitting element is adjacent to one electrode of the second electrode pair while the other end of the second rod-shaped light-emitting element is adjacent to the other electrode of the second electrode pair, and a third rod-shaped light-emitting element, which is arranged so that one end of the third rod-shaped light-emitting element is adjacent to one electrode of the third electrode pair while the other end of the third rod-shaped light-emitting element is adjacent to the other electrode of the third electrode pair. Lengths Rto Rof the first to third rod-shaped light-emitting elements and distances dto dof the first to third electrode pairs () to () satisfy the following relationships. d&#x2264;R&#x3c;d, d&#x2264;R&#x3c;d, d&#x2264;R.

Display device and method of producing display device

A high-withstand-voltage normally-on transistor and a low-withstand-voltage normally-off transistor are connected in series, and diodes are provided in reverse parallel to the transistor. A gate terminal of the transistor is connected to a source terminal of the transistor, and a gate driving circuit that outputs a control signal to a gate terminal of the transistor is provided. Forward voltage of the diode is made lower than forward voltage of the diode, and an inductance component of a path connecting nodes via the diode is made greater than an inductance component of a path connecting the nodes via the diode. Accordingly, a switching circuit which includes transistors connected in series and in which transient current at a time of turning off is reduced is provided.

Switching circuit including serially connected transistors for reducing transient current at time of turning off, and power supply circuit provided therewith

The switching power supply device is provided with a high-withstand voltage first transistor, a first electrode of which being connected to a first node; a low-withstand voltage second transistor, a first electrode of which being connected to a second electrode of the first transistor, and a second electrode of which being connected to a second node; and a drive circuit. Each of the first and second transistors has a parasitic diode connected in the forward direction between the second and first electrodes. The drive circuit, in a case where electrical current is to flow from the first node to the second node, turns on the first and second transistors, and, in a case where electrical current is to flow from the second node to the first node, turns on the first transistor, and turns off the second transistor.

Switching power supply device, and inverter, converter, air conditioner, solar power controller, and automobile employing same

A power factor correction circuit includes: a coil and MOSFETs that boost an input voltage to generate a boosted voltage; a first capacitor having one end connected to a first output terminal, and the other end connected to an intermediate node; and a second capacitor having one end connected to the intermediate node, and the other end connected to a second output terminal. In a first operation mode, the boosted vol tage is applied to the two ends of the first capacitor when a positive voltage is input, and applied to the two ends of the second capacitor when a negative voltage is input. In a second operation mode, the boosted voltage is applied to two ends of the first and second capacitors connected in series. Thus, there is provided a power factor correction circuit which has a high efficiency and is compatible with an input voltage in a broad range.

Power factor correction circuit and power supply device

A boost circuit includes multiple switching circuits connected in parallel. Each switching circuit includes first through third transistors and a resistor. The first transistor, the resistor, and the second transistor are serially connected between first and second nodes. The third transistor is connected between the source of the first transistor and the second node. A conductance Gm (S) of the second transistor and a resistance r (&#x3a9;) of the resistor are respectively configured to be within ranges of 1&#x2266;Gm&#x2266;1000 and 7&#xd7;Gm&#x2266;r&#x2266;170&#xd7;Gm. Since the first transistor having a high breakdown voltage is turned on by turning on the second transistor, variations in turn-on time of the boost circuit are reduced.

Semiconductor device, and inverter, converter and power conversion device employing the same

A solar energy utilization system includes a solar panel, a motor driven by an inverter circuit functioning as a motor drive circuit with power output by the solar panel, a solar output voltage monitor functioning as a monitor that monitors an input or an output of the solar panel and also functioning as a monitor that monitors an input or an output of the inverter circuit, and a controller. The controller has a control mode in which the inverter circuit is controlled such that an output voltage of the solar panel is maintained at a voltage higher than a maximum power point voltage. In this control mode, the controller performs the control such that a rotation speed of the motor is changed repeatedly at predetermined timings.

Solar energy utilization system

A control circuit is driven by a driving voltage (V) generated by a generator circuit, and outputs a control signal. A drive circuit is driven by a driving voltage (V) generated by another generator circuit, and turns a switching element inside a switching circuit on or off by supplying, to the switching circuit, a drive signal based on the control signal. During activation of a switching device, a voltage generation controller detects a voltage value of the output voltage (V) of the generator circuit, and allows activation of the other generator circuit after verifying that the detected voltage value is at or above a designated threshold.

Switching device

A highly efficient and low-cost switching power supply device includes a high withstand voltage transistor and a low withstand voltage transistor. When current flows from a second node to a first node, the high withstand voltage transistor turns on and the low withstand voltage transistor turns off, causing current to flow through a built-in diode of the low withstand voltage transistor. Since current does not flow through the parasitic diode of the high withstand voltage transistor, the recovery current is reduced. Furthermore, since a first delay circuit including resistors and a diode is connected to the gate electrode of the high withstand voltage transistor, and a second delay circuit including resistors and a diode is connected to the gate electrode of the low withstand voltage transistor, precise adjustment of the switching speed during switching operation is possible, and losses are reduced.

Switching power supply device, and inverter, converter, and solar power controller including same

An in-vehicle solar system that supplies electric energy from a solar battery module to an electric device such as a secondary battery, a load, and the like includes a capacitor that accumulates electric energy from the solar battery module and supplies the accumulated electric energy to the electric device.

Electric system and vehicle

Methods, systems, and apparatuses for nanowire deposition are provided. A deposition system includes an enclosed flow channel, an inlet port, and an electrical signal source. The inlet port provides a suspension that includes nanowires into the channel. The electrical signal source is coupled to an electrode pair in the channel to generate an electric field to associate at least one nanowire from the suspension with the electrode pair. The deposition system may include various further features, including being configured to receive multiple solution types, having various electrode geometries, having a rotatable flow channel, having additional electrical conductors, and further aspects.

Methods and systems for electric field deposition of nanowires and other devices

A metal lineis formed in a linear area S of an insulative substrate, and moreover a metal lineis formed generally parallel to the metal linewith a specified distance thereto. The metal lineis connected to an n-type semiconductor coreof bar-like structure light-emitting elementsA toD, and the metal lineis connected to a p-type semiconductor layer. By dividing the insulative substrateinto a plurality of divisional substrates, a plurality of light-emitting devices in each of which a plurality of bar-like structure light-emitting elementsare placed on the divisional substrates are formed.

Light-emitting device manufacturing method, light-emitting device, lighting device, backlight, liquid-crystal panel, display device, display device manufacturing method, display device drive method and liquid-crystal display device

In a light emitting device, one hundred or more bar-like structured light emitting elements () each having a light emitting area of 2,500&#x3c0; &#x3bc;mor less are placed on a mounting surface of one insulating substrate (), so that the light emitting device fulfills little variation in luminance, long life, and high efficiency by dispersion of light emission with suppression of increase in temperatures in light emitting operations.

Light emitting device, method for manufacturing light emitting device, illuminating device, and backlight

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Nara, Japan

Akihide Shibata