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100results about How to "Large constant" patented technology
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Circuit arrangement and method for Insulation monitoring for inverter applications
ActiveUS20080084215A1Less disturbingLarge constantEmergency protective circuit arrangementsImpedence measurementsMonitoring systemVoltage
An inverter application comprises at least one apparatus fed by an inverter (10). The determining of insulation defects is effected by way of a differential voltage of part voltages (U, U′) of an intermediate circuit (7) or the ratio of one of these part voltages (U, U′) to the total voltage of an intermediate circuit, and by way of an operating condition of the inverter (10). The monitoring of the insulation is carried out only with the means (1a, 1b, 1c, 1a′, 1b′, 1c′, 5, 5′) which are present in the inverter (10) in any case. The operating condition is set as a particular switch position in the inverter (10) by an insulation monitoring system. Alternatively, the operating condition is, while the inverter is on-line or in operation, transferred from the inverter control (9) to an insulation monitoring system for improving the quality of the monitoring.
Owner:SCHMIDHAUSER AG
Piezoelectric material and piezoelectric element
ActiveUS20090243438A1Large piezoelectric constantHigh Curie temperaturePiezoelectric/electrostrictive device manufacture/assemblyPiezoelectric/electrostriction/magnetostriction machinesComposite materialSpontaneous polarization
A piezoelectric element includes a first electrode, a piezoelectric film disposed on the first electrode, and a second electrode disposed on the piezoelectric film. The piezoelectric film is composed of piezoelectric material that is lead free and formed by mixing 100(1−x)% of material A having a spontaneous polarization of 0.5 C / m2 or greater at 25° C. and 100 x % of material B having piezoelectric characteristics and a dielectric constant of 1000 or greater at 25° C., wherein (1−x)Tc(A)+xTc(B)≧300° C., where Tc(A) is the Curie temperature of the material A and Tc(B) is the Curie temperature of the material B.
Owner:SEIKO EPSON CORP
Defect-free SiGe source/drain formation by epitaxy-free process
InactiveUS20070173022A1Low costReduce throughputTransistorSemiconductor/solid-state device manufacturingMOSFETCharge carrier mobility
MOSFET transistors having localized stressors for improving carrier mobility are provided. Embodiments of the invention comprise a gate electrode formed over a substrate, a carrier channel region in the substrate under the gate electrode, and source / drain regions on either side of the carrier channel region. The source / drain regions include an embedded stressor having a lattice constant different from the substrate. In a preferred embodiment, the substrate is silicon and the embedded stressor is SiGe. Implanting a portion of the source / drain regions with Ge forms the embedded stressor. Implanting carbon into the source / drain regions and annealing the substrate after implanting the carbon suppresses dislocation formation, thereby improving device performance.
Owner:TAIWAN SEMICON MFG CO LTD
Piezoelectric thin film, method of manufacturing piezoelectric thin film, piezoelectric element, and ink jet recording head
ActiveUS20070097182A1Good composition uniformityLarge constantPolycrystalline material growthPiezoelectric/electrostrictive device manufacture/assemblyOptoelectronicsTitanium
There is disclosed a piezoelectric thin film having less non-uniform portion and holding satisfactory piezoelectric characteristics, a method of manufacturing the film, a piezoelectric element using the piezoelectric thin film, and an ink jet system recording head using the piezoelectric element. In the piezoelectric thin film of perovskite crystals formed on a substrate by a sol-gel process and represented by a general formula Pb(1-x)Lax(ZryTi1-y)O3 (where 0≦x<1, 0.05≦y≦1), a film thickness of the thin film is 1000 nm or more and 4000 nm or less, and a difference between a maximum value and a minimum value of y in an arbitrary portion of the thin film is 0.05 or less.
Owner:CANON KK +1
Conductive connecting members and electrochemical systems
ActiveUS20070231593A1Good electrical connectionLarge constantLayered productsFuel cell auxillariesElectrochemical cellEngineering
A conductive connecting member 1 is contacted with an electrochemical cell for electrical conduction. The cell has a solid electrolyte film, a first electrode provided on a first face of the solid electrolyte film and contacting a first gas and the first gas, and a second electrode provided on a second face of the solid electrolyte film and contacting a second gas. The conductive connecting member 1 has a plate-like main part 2 and a tongue piece 3 protruding from the main part 2. One end of the tongue piece 3 is connected with the main part 2.
Owner:MORIMURA SOFC TECH CO LTD
Piezoelectric material and piezoelectric element
ActiveUS8102100B2Free and easy to prepareLarge constantPiezoelectric/electrostrictive device manufacture/assemblyPiezoelectric/electrostriction/magnetostriction machinesCurie temperatureComposite material
A piezoelectric element includes a first electrode, a piezoelectric film disposed on the first electrode, and a second electrode disposed on the piezoelectric film. The piezoelectric film is composed of piezoelectric material that is lead free and formed by mixing 100(1−x)% of material A having a spontaneous polarization of 0.5 C / m2 or greater at 25° C. and 100 x % of material B having piezoelectric characteristics and a dielectric constant of 1000 or greater at 25° C., wherein (1−x)Tc(A)+xTc(B)≧300° C., where Tc(A) is the Curie temperature of the material A and Tc(B) is the Curie temperature of the material B.
Owner:SEIKO EPSON CORP
Piezoelectric ceramic composition
ActiveUS20080237530A1Excellent piezoelectric propertiesAdequate piezoelectric propertyPiezoelectric/electrostrictive device manufacture/assemblyPiezoelectric/electrostrictive device material selectionSolid solutionCrystal base
A piezoelectric ceramic composition that acquires excellent piezoelectric properties even when it is fired at a low temperature is offered. The piezoelectric ceramic composition possesses a composition corresponding to a solid solution that contains a first compound having a rhombohedral crystal-based perovskite structure, a second compound having a tetragonal crystal-based perovskite structure, and a third compound. The third compound is a compound oxide containing Bi as a first component element, Fe or Mn as a second component element, and a hexavalent metallic element as a third component element. The hexavalent metallic element is at least one kind selected from W and Mo.
Owner:TDK CORPARATION
Liquid crystal display device
InactiveUS20120229751A1Short response timeSmall viscosityLiquid crystal compositionsNon-linear opticsDielectric anisotropyUltraviolet lights
The invention is to provide an AM device containing a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a large optical anisotropy, a large positive dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to and heat, or having a suitable balance regarding at least two of the characteristics, and the AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth; wherein a liquid crystal display device contains a liquid crystal composition having a positive dielectric anisotropy and containing a specific compound having a large positive dielectric anisotropy as a first component and a specific compound having a small viscosity as a second component.
Owner:JNC CORP +1
Piperidine derivative, liquid crystal composition and liquid crystal display device
InactiveUS20160090534A1Avoid photolysisImprove solubilityLiquid crystal compositionsOrganic chemistryCrystallographyLiquid-crystal display
To provide a compound having an effect for preventing photolysis of a liquid crystal composition, and having a high solubility in the liquid crystal composition, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. The compound is represented by formula (1), a liquid crystal composition contains the compound, and a liquid crystal display device includes the composition:M(Z-Q)a(Rb)b (1)wherein, in formula (1), a is 1 to 4, and b is a numerical value: (4−a); M is an organic group; Z is a single bond or the like; and Q is a monovalent group represented by formula (Q-1), (Q-2) or (Q-3), in which Ra and Rb are hydrogen, alkyl or the like.
Owner:JNC CORP +1
Cpp-type magneto resistive effect element having a pair of magnetic layers
InactiveUS20090174971A1High magneto-resistive ratioSoft magnetic characteristicNanomagnetismNanoinformaticsCrystalline oxideFilm plane
A magnetoresistance effect element comprises: a pair of magnetic layers whose magnetization directions form a relative angle therebetween that is variable depending on an external magnetic field; and a crystalline spacer layer sandwiched between the pair of magnetic layers; wherein sense current may flow in a direction that is perpendicular to a film plane of the pair of magnetic layers and the spacer layer. The spacer layer includes a crystalline oxide, and either or both magnetic layers whose magnetization direction is variable depending on the external magnetic field has a layer configuration in which a CoFeB layer is sandwiched between a CoFe layer and a NiFe layer and is positioned between the spacer layer and the NiFe layer.
Owner:TDK CORPARATION
Compound, liquid crystal composition and liquid crystal display device
InactiveUS20120313043A1Easy to useSmall viscosityLiquid crystal compositionsOrganic chemistryDielectric anisotropyUltraviolet lights
Owner:JNC CORP +1
Compound having polymerizable group, liquid crystal composition and liquid crystal display device
InactiveUS20180023001A1Good chemical stabilityShort response timeLiquid crystal compositionsGroup 4/14 element organic compoundsCrystallographyElectrical polarity
Provided is a polar compound that has high chemical stability and high capability of aligning liquid crystal molecules, and has a large voltage holding ratio when used in a liquid crystal display device.The compound represented by formula (1) is applied.For example, R1 is alkyl having 1 to 15 carbons; rings A1 to A5 are 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z5 are a single bond or alkylene having 1 to 10 carbons; a and b are 0 to 4, and a sum of a and b is 4 or less; d is 1 to 4; c and e are 0 to 4; P1 to P3 are a polymerizable group represented by formulas (P-1) to (P-5):in which M1 to M3 are hydrogen or alkyl having 1 to 5 carbons; and R2 is a group represented by formulas (1a) to (1c):in which Sp1 to Sp5 are a single bond or alkylene having 1 to 10 carbons; S1 is >CH—; S2 is >C<; and X1 is —OH.
Owner:JNC CORP +1
Circuit arrangement and method for insulation monitoring for inverter applications
ActiveUS8310242B2Large constantKeep for a long timeEmergency protective circuit arrangementsImpedence measurementsMonitoring systemEngineering
An inverter application comprises at least one apparatus fed by an inverter (10). The determining of insulation defects is effected by way of a differential voltage of part voltages (U, U′) of an intermediate circuit (7) or the ratio of one of these part voltages (U, U′) to the total voltage of an intermediate circuit, and by way of an operating condition of the inverter (10). The monitoring of the insulation is carried out only with the means (1a, 1b, 1c, 1a′, 1b′, 1c′, 5, 5′) which are present in the inverter (10) in any case. The operating condition is set as a particular switch position in the inverter (10) by an insulation monitoring system. Alternatively, the operating condition is, while the inverter is on-line or in operation, transferred from the inverter control (9) to an insulation monitoring system for improving the quality of the monitoring.
Owner:SCHMIDHAUSER AG
Dual Phase-Locked Loop Circuit and Method for Controlling the Same
ActiveUS20110006820A1Increased frequency rangeSmall loop bandwidthPulse automatic controlAngle demodulation by phase difference detectionPower flowPhase locked loop circuit
A dual phase-locked loop (PLL) circuit includes a phase / frequency detector, a charge pump, a frequency tuning circuit and an N divider. The frequency tuning circuit includes a coarse-tuning circuit, for coarse-tuning an output frequency of the dual PLL circuit to approximate a target frequency; a fine-tuning circuit, for fine-tuning the output frequency of the dual PLL circuit to the target frequency; and a current control oscillator (CCO), for generating an output signal of the dual PLL circuit. The output frequency of the output signal is equal to the target frequency.
Owner:MEDIATEK INC
Liquid crystal composition and liquid crystal display device
InactiveUS20160032188A1Short response timeEasy to useLiquid crystal compositionsUltraviolet lightsEngineering
A liquid crystal composition having at least one or a suitable balance regarding at least two of characteristic such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet-light or heat, or large elastic constant; an AM-device having short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio, a negatively large DC brightness relaxation time constant and long-service-life. The liquid crystal composition contains a compound contributing to high stability to heat or ultraviolet-light as an additive component and a specific compound having positively large dielectric anisotropy, and a liquid crystal display device includes the composition. The composition may contain a specific compound having high maximum temperature or small viscosity as a second component or a specific compound having negative dielectric anisotropy as a third component.
Owner:JNC CORP +1
Piezoelectric thin film, method of manufacturing piezoelectric thin film, piezoelectric element, and ink jet recording head
ActiveUS7399067B2Improve uniformityLarge constantPolycrystalline material growthPiezoelectric/electrostrictive device manufacture/assemblyOptoelectronicsPiezoelectric thin films
There is disclosed a piezoelectric thin film having less non-uniform portions and holding satisfactory piezoelectric characteristics, a method of manufacturing the film, a piezoelectric element using the piezoelectric thin film, and an ink jet system recording head using the piezoelectric element. In the piezoelectric thin film of perovskite crystals formed on a substrate by a sol-gel process and represented by a general formula Pb(1-x)Lax(ZryTi1-y)O3 (where 0≦x<1, 0.05≦y≦1), a film thickness of the thin film is 1000 nm or more and 4000 nm or less, and a difference between a maximum value and a minimum value of y in an arbitrary portion of the thin film is 0.05 or less.
Owner:CANON KK +1
Liquid crystal composition and liquid crystal display device
ActiveUS9512360B2Short response timeBig ratioLiquid crystal compositionsNon-linear opticsDielectric anisotropyUltraviolet lights
Owner:JNC CORP +1
Liquid crystal composition and liquid crystal display device
InactiveUS9102869B2High stability to ultraviolet lightShort response timeLiquid crystal compositionsNon-linear opticsDielectric anisotropyRotational viscosity
A liquid crystal composition and an AM liquid crystal display device are described. The liquid crystal composition contains a specific compound having a small viscosity as a first component, may further contain a specific compound having a large negative dielectric anisotropy as a second component and a specific compound having a small viscosity as a third component, and has a negative dielectric anisotropy and a ratio of rotational viscosity to an elastic constant in the range of 4.2 GPa·s / N or lower. The liquid crystal display device includes the composition.
Owner:JNC CORP +1
Digital automatic level control system
ActiveUS7194049B2Slow power variationReducing extra hardwareGain controlAmplitude-modulated carrier systemsControl systemData buffer
A digital automatic level control system employs delay elements, which enable information about a signal parameter from the past, present and future to be processed to provide an optimal gain that can be used to level rapidly varying signals, such as bursty signals. As digital time samples of a signal are passed through first and second buffers, first and second accumulators maintain running sums that are related to the sum of the samples presently in the first and second buffers, respectively. The sums in the first and second accumulators represent information about the signal parameter for the future and the past, respectively. By choosing the maximum of these two values, the system can anticipate the beginning of a signal burst, and still have enough delay to compensate the end of a signal burst. In one embodiment of the invention, multiple channel signals can be leveled, either individually or in groups.
Owner:NORTHROP GRUMMAN SYST CORP
Liquid crystal composition and application thereof
ActiveUS20180044592A1Low rotational viscosityLarge elastic constantLiquid crystal compositionsNon-linear opticsCrystallographyLiquid-crystal display
The present invention relates to the liquid crystal field, and particularly relates to a liquid crystal composition and use thereof in the liquid crystal display field. The liquid crystal composition of the present invention comprises, in percentages by weight, 5-40% of one or more compounds represented by general formula I, 2-30% of one or more compounds represented by general formula II, and 20-70% of one or more compounds represented by general formula III, and may further comprise 4-30% of one or more compounds represented by general formula IV and / or 5-25% of one or more compounds represented by general formulas V to IX. The combined use of the above-mentioned compounds can effectively reduce the rotational viscosity of the liquid crystal composition, improves related properties of the mixed liquid crystal, and thus reduces the response time thereof. The liquid crystal composition of the present invention can be used for a fast-response liquid display in a variety of display modes.
Owner:BEIJING BAYI SPACE LCD MATERIALS TECH
Liquid crystal composition and liquid crystal display device
InactiveUS9434883B2Short response timeBig ratioLiquid crystal compositionsNon-linear opticsDielectric anisotropyMaterials science
A liquid crystal composition having at least one or a suitable balance regarding at least two of characteristic such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet-light or heat, or large elastic constant; an AM-device having short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio, a negatively large DC brightness relaxation time constant and long-service-life. The liquid crystal composition contains a compound contributing to high stability to heat or ultraviolet-light as an additive component and a specific compound having positively large dielectric anisotropy, and a liquid crystal display device includes the composition. The composition may contain a specific compound having high maximum temperature or small viscosity as a second component or a specific compound having negative dielectric anisotropy as a third component.
Owner:JNC CORP +1
Noise filter circuit
InactiveUS20050127989A1Improve accuracyWell formedSwitched capacitor networksDigital storageCapacitorSemiconductor
An object is to provide a noise removing circuit that can be integrally formed on a semiconductor substrate and can improve the accuracy of noise component removal. The noise removing circuit comprises a highpass filter detecting a noise component included in an input signal, a pulse generating circuit generating a pulse signal corresponding to the detected noise component, an analog delaying circuit 252 delaying the input signal, and an outputting circuit removing the noise component included in the delayed signal according to the output timing of the pulse signal. The analog delaying circuit 252 delays the output timing of the input signal by making switches 51 to 56 electrically continuous in a sequential order, by holding the voltage of the input signal at each time point in a plurality of capacitors 81 to 86, and by extracting the held voltage before being updated by making switches 61 to 66 electrically continuous.
Owner:TOYOTA IND CORP +1
Terbium type paramagnetic garnet single crystal and magneto-optical device
InactiveUS20050157219A1High stabilityLarge faraday effectPolycrystalline material growthFrom solid stateTerbiumAluminium
The terbium type paramagnetic garnet single crystal with such characteristics as a high Faraday effect and a high light transmission factor even in a visible range has a high Verdet constant. The magneto-optical device contains the terbium type paramagnetic garnet single crystal. The terbium type paramagnetic garnet single crystal contains at least terbium, at least one element of aluminum and gallium, a part of the terbium being replaced by at least one element of cerium and praseodymium.
Owner:MURATA MFG CO LTD
Noise removing circuit
InactiveUS7142834B2Improve accuracyWell formedSwitched capacitor networksDigital storageCapacitorSemiconductor
An object is to provide a noise removing circuit that can be integrally formed on a semiconductor substrate and can improve the accuracy of noise component removal. The noise removing circuit comprises a highpass filter detecting a noise component included in an input signal, a pulse generating circuit generating a pulse signal corresponding to the detected noise component, an analog delaying circuit 252 delaying the input signal, and an outputting circuit removing the noise component included in the delayed signal according to the output timing of the pulse signal. The analog delaying circuit 252 delays the output timing of the input signal by making switches 51 to 56 electrically continuous in a sequential order, by holding the voltage of the input signal at each time point in a plurality of capacitors 81 to 86, and by extracting the held voltage before being updated by making switches 61 to 66 electrically continuous.
Owner:TOYOTA IND CORP +1
Liquid crystal composition and liquid crystal display device
InactiveUS8535562B2High stability to ultraviolet lightShort response timeLiquid crystal compositionsThin material handlingElectricityDielectric anisotropy
Provided is a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a large optical anisotropy, a large dielectric anisotropy, a large specific resistance, a large elastic constant, a high stability to ultraviolet light and a high stability to heat, or having a suitable balance regarding at least two of the characteristics. Also provided is an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition contains a specific compound having a large elastic constant as a first component, and a specific compound having a large dielectric anisotropy as a second component, and has a nematic phase, and a liquid crystal display device contains the composition.
Owner:JNC CORP +1
Terbium type paramagnetic garnet single crystal and magneto-optical device
InactiveUS7166162B2Improve stabilityLarge constantPolycrystalline material growthFrom solid stateCeriumSingle crystal
A terbium type paramagnetic garnet single crystal having a high Faraday effect and a high light transmission factor even in a visible range, as well as a high Verdet constant. A magneto-optical device containing the terbium type paramagnetic garnet single crystal. The terbium type paramagnetic garnet single crystal contains at least terbium, at least one element of aluminum and gallium, and a part of the terbium is replaced by at least one element of cerium and praseodymium.
Owner:MURATA MFG CO LTD
Liquid crystal composition and liquid crystal display device
ActiveUS20150240162A1Long service lifeSmall viscosityLiquid crystal compositionsOrganic chemistryDielectric anisotropyVoltage
To provide a liquid crystal composition having at least one or a suitable balance regarding at least two of characteristic such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet light or heat; an AM device having short response time, a large voltage holding ratio, a large contrast ratio, long service life and so forth. The liquid crystal composition has positive dielectric anisotropy and contains a specific compound having high maximum temperature and large refractive index anisotropy as a first component, and may contain a specific compound having large positive dielectric anisotropy as a second component, a specific compound having high maximum temperature or small viscosity as a third component or a specific compound having negative dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition.
Owner:JNC CORP +1
Dual phase-locked loop circuit and method for controlling the same
ActiveUS8564340B2Small loop bandwidthReduce additional circuitsPulse automatic controlAngle demodulation by phase difference detectionPhase locked loop circuitEngineering
A dual phase-locked loop (PLL) circuit includes a phase / frequency detector, a charge pump, a frequency tuning circuit and an N divider. The frequency tuning circuit includes a coarse-tuning circuit, for coarse-tuning an output frequency of the dual PLL circuit to approximate a target frequency; a fine-tuning circuit, for fine-tuning the output frequency of the dual PLL circuit to the target frequency; and a current control oscillator (CCO), for generating an output signal of the dual PLL circuit. The output frequency of the output signal is equal to the target frequency.
Owner:MEDIATEK INC
Liquid crystal composition and liquid crystal display device
InactiveUS20160177180A1Short response timeBig ratioLiquid crystal compositionsNon-linear opticsElectricityDielectric anisotropy
A liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of nematic phase, a low minimum temperature of nematic phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, and high stability to UV light and heat, or having a suitable balance regarding at least two thereof, and an AM device including the composition and having a short response time, a large voltage holding ratio, a large contrast ratio or a long service life are shown. The composition has the nematic phase and contains a specific compound having large dielectric anisotropy as a first component, a specific compound having small viscosity as a second component, and may contain a specific compound having a high maximum temperature or small viscosity as a third component and a specific compound having large dielectric anisotropy as a fourth component. The LCD device includes the composition.
Owner:JNC CORP +1
Liquid crystal composition and liquid crystal display device and use thereof
InactiveUS20140034877A1Short response timeSmall viscosityLiquid crystal compositionsCrystallographyDielectric anisotropy
To provide a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet light, high stability to heat and a large elastic constant, or is to provide a liquid crystal composition having a suitable balance regarding at least two of the characteristics; an AM device having short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition has the nematic phase and contains a compound having a difluoromethyleneoxy group and a trifluoromethyl group and having large dielectric anisotropy as a first component, and a specific compound having small dielectric anisotropy as a second component. The liquid crystal display device contains the composition.
Owner:JNC CORP +1
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