74results about How to "Highly miniaturized" patented technology

A tiny electrically powered hydrodynamic blood pump is disclosed which occupies one third of the aortic or pulmonary valve position, and pumps directly from the left ventricle to the aorta or from the right ventricle to the pulmonary artery. The device is configured to exactly match or approximate the space of one leaflet and sinus of valsalva, with part of the device supported in the outflow tract of the ventricular cavity adjacent to the valve. In the configuration used, two leaflets of the natural tri-leaflet valve remain functional and the pump resides where the third leaflet had been. When implanted, the outer surface of the device includes two faces against which the two valve leaflets seal when closed. To obtain the best valve function, the shape of these faces may be custom fabricated to match the individual patient's valve geometry based on high resolution three dimensional CT or MRI images. Another embodiment of the invention discloses a combined two leaflet tissue valve with the miniature blood pump supported in the position usually occupied by the third leaflet. Either stented or un-stented tissue valves may be used. This structure preserves two thirds of the valve annulus area for ejection of blood by the natural ventricle, with excellent washing of the aortic root and interface of the blood pump to the heart. In the aortic position, the blood pump is positioned in the non-coronary cusp. A major advantage of the transvalvular VAD is the elimination of both the inflow and outflow cannulae usually required with heart assist devices.

A variable focal length lens system includes: a first lens group having a positive refractive power; a second lens group having a negative refractive power; a third lens group having a positive refractive power; and a fourth lens group having a positive refractive power. As the lens position state changes from a wide-angle end state to a telephoto end state, at least each of the lens groups is mobile, the second lens group moves towards the image side and the third lens group moves towards the object side such that the gap between the first and the second lens group increases, and the gap between the second and the third lens group decreases, while the fourth lens group moves in the direction of the optical axis so as to compensate for changes in the position of the image plane which accompany movements of each of the lens group.

In a heat exchange element 1, first fluid circulation portions 5 having a honeycomb structure having a plurality of cells separated by ceramic partition walls 4, extending through in an axial direction from one end face 2 to the other end face 2, and allowing a heated medium as a first fluid to flow therethrough and second fluid circulation portions 6 being separated by ceramic partition walls 4, extending in the direction perpendicular to the axial direction, allowing a second fluid to flow therethrough, transferring heat to a medium to be heated as the second fluid are alternately formed as a unit. The cells 3 on the first fluid circulation portion 5 side are smaller than the cells 3 on the second fluid circulation portion 6 side, and the partition walls have a density of 0.5 to 5 g/cm³ and a thermal conductivity of 10 to 300 W/mK.

The invention relates to the technical field of speed reducers, in particular to a bevel gear-double cycloid speed reduction device for a rocket launching movable platform. The device is a two-stage speed reduction device characterized by comprising a bevel gear pair and double-cycloid transmission, wherein (A) the cycloid transmission comprises a base, an output shaft, support bearings, a cycloid wheel, an eccentric bearing, an inner cycloid gear ring, a front base, an input shaft and a W output mechanism, the input shaft is supported in an inner hole of the front base through a bearing, the shaft extension end is connected with the eccentric bearing, and the input end is connected with a big bevel gear; the front base is integrated with the inner cycloid gear ring and the base in sequence; the output shaft is supported in the inner hole of the base through a bearing; and (B) two symmetrically installed small bevel gear shafts engaged with the big bevel gear are supported in wall holes of a front base box through bearings, and the small bevel gear shafts are connected with a motor; and another small bevel gear shaft is connected with a manual handle. The invention has the advantages of two-stage speed reduction, small axial size, light weight and high-degree lightweight; cycloid gear teeth are uninterrupted, so that the bearing capacity is greater than that of planet transmission with only four planet wheels; and the cost is low and is reduced to 40-55%.

In the method for manufacturing a semiconductor device according to the present invention, after forming a BPSG film 110 on a silicon substrate 100, a preparatory hole 120 that reaches a specific depth and has a larger diameter than a contact hole 118 is formed at a position where the contact hole 118 (see FIG. 4) is to be formed at the BPSG film 110. Thus, polysilicon side walls 114 (see FIG. 4) formed at side portions of a polysilicon film 112 (see FIG. 4) are also formed at the side walls of the preparatory hole 120. As a result, the contact hole 118 (see FIG. 4) free of shape defects can be formed by using an etching mask 116 (see FIG. 4) constituted of the polysilicon film 112 and the polysilicon side walls 114. This structure prevents defects related to the shape of the hole and reduces electrical defects such as shorting.

A non-volatile semiconductor memory device includes a semiconductor substrate; a floating gate formed above the semiconductor substrate; an erasing gate formed above the floating gate; a control gate formed above a channel region of a surface layer of the semiconductor substrate at a position corresponding to one lateral side of the floating gate and the erasing gate; a first silicide film formed on an upper surface of the erasing gate; and a second silicide film formed on an upper surface of the control gate, in which a height of the upper surface of the control gate is flush with/or lower than a height of the upper surface of the erasing gate. With such a device structure, the distance between the upper surface of the erasing gate and the upper surface of the control gate is large, and hence the probability of occurrence of the silicide short between the first silicide film formed on the upper surface of the erasing gate and the second silicide film formed on the upper surface of the control gate may be extremely lowered. Thus, further high speed, operation, miniaturization, and the lower voltage operation of the non-volatile semiconductor memory device having an erasing gate may be achieved.

An RTA method has a limitation on miniaturization. The RTA method needs a heating time of several seconds, and has a risk that impurities are diffused into a deep portion, since a semiconductor substrate is heated at a high temperature. Thus, the RTA method has a difficulty in responding miniaturization which is expected in the future. According to the present invention, a fundamental wave is used without putting laser light into a non-linear optical device, and laser annealing is conducted by irradiating an impurity diffusion layer with pulsed laser light having high intensity and a high repetition rate, so as to electrically activate the impurities. By the present invention, a thin layer on the surface of a silicon substrate can be partially melted to conduct activation. Further, the width of the region activated by laser-scanning once can be increased, and thus the productivity can be enhanced dramatically.

The current invention provides a devices methods and systems for efficient biosensing using the Surface Plasmon Resonance (SPR) and Cavity Plasmon Resonance (CPR) phenomena. The miniature biosensor comprises a stratified structure having a channel for analyte form between a substrate and thin metallic absorber layer in which plasmon are resonantly excited. Presence of analyte in the channel, changes the resonance conditions, thus changing the energy absorbed by the biosensor. Bolometric signal from the absorber; layer or detection of the radiation not absorbed by the biosensor is used to detect, measure the concentration of, or monitor the analyte.

An object of the present invention is to provide at low cost, a highly functional and small size optical amplifier, which realizes a polarization mode dispersion (PMD) compensation function and an optical amplifying function, with a simple construction. To this end, the optical amplifier of the present invention comprises: a polarization control section that controls the polarization state of input signal light; a PMD generation section that receives the signal light from the polarization control section at a polarization-preserving fiber thereof doped with a rare earth element, and gives a differential group delay between orthogonal polarization mode components of the signal light to perform PMD compensation and at the same time amplifies the signal light; a pumping light supply section that supplies pumping light to the polarization-preserving fiber; a monitoring section that monitors the PMD generation state of the signal light from the PMD generation section, and the like; and a control section that controls the polarization control section and the pumping light supply section based on the monitor results of the monitoring section.

A light source drive which modulates a light source so as to cause the same to emit a light, includes: a superposition current generation part which generates a superposition current approximately corresponding to a charging/discharging current needed for a capacitance occurring in parallel to the light source for a predetermined time period near at least one of a rising-up part and a decaying-down part of a waveform of a drive current for the light source; and an addition/subtraction part which adds to or subtracts from the drive current the superposition current generated by the superposition current generation part.

This present invention discloses a circuit of the electronic ballast with the capability of automatic restart. It includes a rectifier circuit, a trigger circuit of automatic restart, a DC/AC convertor, a output circuit of the lamp, and a circuit of abnormal protection. Its main feature is that there is a discharge loop in the trigger circuit, so it can realize automatic restart only after changing the lamp tube or connecting the lamp pin without turning off the power source when the lamp tube is abnormal and enters into protecting condition or any of the lamp pins is in poor contact. Because the trigger recourse Vt is led out from the lamp loop, when the power source is switched on, the DC/AC convertor is triggered to start after insuring good contact between the lamp tube and the lamp holder, accordingly realizes the self-check function of the connection for the lamp tube. Furthermore, because primary side winding Ta of oscillating coil T of the present invention is connected in series between the lamp pin P1 and the common end of feed-through capacitor C4 and by-pass capacitor C6, the primary side winding Ta of oscillating coil T will disconnect the power source when the lamp is in open circuit or any of the lamp pins is in poor contact. Therefore, the circuit will not come into protecting condition despite the by-pass capacitor C6, which results in the simplification of the task program.

A laminated body and fabrication method thereof, which allow space saving and control of variation in internal layer resistance, are provided. When forming an internal-layer resistive element 7 in a multilayer ceramic substrate 10, the internal-layer resistive element 7 is connected to exterior electrodes (an upper surface electrode 32 and an undersurface electrode 34) via multiple via-electrodes 3a and 3b arranged in parallel, without a pad electrode adopted in the conventional laminated body. Moreover, in a multilayer ceramic substrate having multiple internal-layer resistive elements arranged in a multilayer structure, multiple internal-layer resistive elements are directly connected via multiple via-electrodes arranged in parallel.

The invention relates to the technical field of speed reducers, in particular to a cycloid speed-reducing device of a rocket launching movable platform, which is characterized in that the cycloid speed-reducing device is a two-stage speed-reducing device comprising a bevel gear pair and a cycloid transmission, wherein (A) the cycloid transmission comprises a base, an output shaft, a supporting bearing, a cycloid gear, an eccentric bearing, a needle-tooth shell, a needle-tooth pin, a front base, an input shaft and an W output mechanism, wherein an input shaft is supported on an inner hole of the front base by bearings, the shaft-extension end of the input shaft is connected with the eccentric bearing, and the input end is connected with a large bevel gear; the front stand is sequentially connected with the needle-tooth shell and the base; the output shaft is supported on the inner hole of the base by the bearings; and (B) two symmetrical small bevel gear shafts meshed with the large bevel gear are both supported in a box wall hole of the front base by the bearings, wherein one small bevel gear shaft is connected with a motor, and the other small bevel gear shaft is connected with amanually-operated handle. The cycloid speed-reducing device has the advantages of two-stage speed reduction, short axial size, light weight and high quantization; in addition, as cycloid gear teeth and semi-buried teeth are continuous, the cycloid speed-reducing device has larger bearing capacity than that of a planetary transmission with only four planet gears; moreover, the cost of the cycloid speed-reducing device is lowered by 40%-55%.

A semiconductor storage device includes: reading blocks; third wirings; reading switches; a control circuit; and evaluating circuits. The reading blocks includes first and second wirings extended in a first and second direction, respectively, and resistive storage elements arranged at points where the first and second wirings intersect. The third wirings is extended in the second direction and provided correspondingly to the second wirings. The reading switches are arranged between the third and second wirings. The control circuit controls the reading switches and supplies currents or the like to the first wirings. The evaluating circuits are connected to the third wirings and evaluate the currents or the like. When data is read out, the control circuit selects a selection reading block and a selection first wiring and supplies the currents or the like, and the evaluating circuits execute the evaluations of the currents or the like in the third wirings.

A semiconductor device includes bit lines provided in a semiconductor substrate; an ONO film that is provided along the surface of the semiconductor substrate and is made of a tunnel oxide film, a trap layer, and a top oxide film; and an oxide film that is provided on the surface of the semiconductor substrate in the middle between the bit lines and contacts the side face of the ONO film, in which the film thickness of the oxide film is larger than the sum of the thicknesses of the tunnel oxide film and the top oxide film, and smaller than the thickness of the ONO film.

The invention relates to the technical field of a speed reducer, in particular to a high-torque cycloidal speed-reduction device of a rocket launching moving platform. The high-torque cycloidal speed-reduction device of the rocket launching moving platform is characterized in that: a two-stage speed-reduction device is formed through cycloidal transmission of a bevel gear pair and three cycloidal wheels, wherein, (A) the cycloidal transmission is constituted by a base, an output shaft, a supporting bearing, three cycloidal wheels with 120 degrees of phase angles, an eccentric bearing, a pin gear housing, a gear pin, a front base, an input shaft and a W-shaped output mechanism, wherein the input shaft is supported in an inner hole of the front base by a bearing, the shaft extension end of the input shaft is connected with the eccentric bearing, and the input end is connected with a bevel gear wheel; the front base is sequentially integrated with the pin gear housing and the base; and the output shaft is supported in the inner hole of the base by a bearing; and (B) two systematical bevel pinion shafts which are meshed with the bevel gear wheel are supported in a box wall hole of the front base by a bearing, and one bevel pinion shaft is connected with a motor and the other bevel pinion shaft is connected with a manual handle. The high-torque cycloidal speed-reduction device of the rocket launching moving platform has the beneficial effects that: (a) two-stage reduction is adopted, the axial size is short, the weight is small and the height is lightened; (b) cycloidal gear teeth and half-buried teeth are not broken, and three cycloidal wheels are adopted, therefore, the bearing capacity of three cycloidal wheels is higher than that of epicyclic transmission of four planet wheels; and (c) the cost is reduced by 40-55 percent.

The invention discloses a detector for detecting a liquid crystal module. The detector comprises top plates and an overturn assembly, wherein the top plates comprise the first top plate and the second top plate, the first top plate is used for carrying the module to be detected, and the overturn assembly is arranged on the second top plate in a turnover mode; the overturn assembly comprises at least one substrate fixing plate, wherein at least one detection substrate is arranged on the substrate fixing plate, and the detection substrate is provided with at least one connector detection port used for detecting a connector of the module to be detected. According to the detector for detecting the liquid crystal module, the module to be detected is convenient to replace in the operation process, the fault rate of the connector detection ports on the module to be detected is reduced, the service life of the connector detection ports on the detection substrates is prolonged, production efficiency is effectively improved, and production cost is reduced.

An inkjet recording head includes: nozzles that jet ink droplets; pressure chambers that communicate with the nozzles and contain ink; a diaphragm that configures part of the pressure chambers; an ink pool chamber that pools ink to be supplied to the pressure chambers via ink flow paths; and piezoelectric elements that cause the diaphragm to be displaced, wherein the ink pool chamber is disposed opposite from the pressure chambers with the diaphragm being disposed therebetween, and drive ICs that apply a voltage to the piezoelectric elements are mounted on a piezoelectric element substrate formed to include the diaphragm.