54results about How to "Reduce the chance of breakdown" patented technology

Disclosed are a MIM capacitor and a manufacturing method thereof. The manufacturing method includes: setting a covering layer on a second conducting layer (used for forming an upper electrode plate of an MIM capacitor). Etching gas which is slower in etching the covering layer than etching dielectric layers is selected in the process of dry etching performed to form through holes respectively exposing a first conducting layer (a lower electrode plate) and a second conducting layer, so that excessive etching of the second conducting layer (the upper electrode plate) is avoided when the dielectric layers embedding the second conducting layer and the first conducting layer are etched simultaneously at the same height. Thus, probability of breakdown of the MIM capacitor is lowered, and reliability of the MIM capacitor is increased.

The present invention relates to a low-temperature plasma waste gas treatment apparatus, which comprises a housing, a filtration module, a low-temperature plasma reaction module and an active carbon fiber filtration module, wherein the filtration module, the low-temperature plasma reaction module and the active carbon fiber filtration module are arranged in the housing, the low-temperature plasma reaction module comprises a first fixation plate, a second fixation plate and n low-temperature plasma reaction tubes arranged between the first fixation plate and the second fixation plate at intervals, the n low-temperature plasma reaction tubes penetrate through the first fixation plate and the second fixation plate and extend along the flowing path of a fluid, the n low-temperature plasma reaction tubes respectively comprise a cathode outer tube, an insulating medium inner tube and an anode rod arranged in the insulating medium inner tube, the cathode outer tube, the insulating medium inner tube and the anode rod form a concentric circle structure, an annular gap is arranged between the cathode outer tube and the insulating medium inner tube, the anode rod is fixed on an anode rod bracket, and a plurality of discharging fluffs prepared from a metal are uniformly distributed on the outer wall of the anode rod in a spiral ladder manner. According to the present invention, the low-temperature plasma waste gas treatment apparatus has advantages of simple structure, low manufacturing cost, good waste gas treatment effect, convenient operation, and convenient maintenance.

The invention is an improvement of a filter drum deduster. The deduster is characterized in that a rigid non-compression eccentric rotating interference compressing piece is used for compressing between an air-out end surface of the filter drum and an overhung pore plate; a cushion space which is not less than 30cm is reserved between the bottom of the filtering drum and the bottom plane of a filtering drum box body; and a filtering air inlet is arranged in the cushion space at the lower part of the filtering drum. According to the deduster provided by the invention, over-diameter particles are ensured not to exist in the filtered gas, the filtering material is prevented from being damaged effectively, the service life of the filtering drum is prolonged, two main defects which are hard to solve by a traditional filtering drum deduster are solved completely, and the effective service life of the filtering drum is prolonged from originally maximum twelve months to eighteen months. A frame type filter is added above a filtering drum air outlet by being connected with a transition section interval, the filter precision of the frame type filter is higher than the filter grade of the lower filtering drum, thereby forming secondary filtration of upper and lower inter-phase serial connection; the minimum filtering precision can be 0.1 microns; the filter drum deduster provided by the invention can be used in the lead-acid battery industry for filtering lead dust and fume, and the dust content of the filtered gas is not more than 0.07mg/m<3>, which is far less than the national emission standard; the filtration resistance is increased by more or less than 10% on the basis of previous grade, so that the contradiction between the filtering precision and the filtering resistance is balanced well.

The invention provides a power converter used for improving synchronous rectifier circuit breakdown and converting an input voltage into an output voltage; the power converter comprises a power circuit, a comparison circuit and a modulation circuit; wherein, the power circuit comprises a high-stand driving circuit, a low-stand driving circuit, a first transistor, a second transistor, a first resistance, a first diode, a power supply circuit and a second resistance; one end of the first resistance is coupled to the grid of a second transistor and the other end thereof is coupled to the low-stand driving circuit; furthermore, the first diode is connected in parallel with the first resistance; the anode of the first diode is coupled to the grid of the second transistor and the cathode thereof is connected with the low-stand driving circuit. In the invention, the power converter leads the first resistance to be connected in parallel with the first diode, thus reducing the effects of the first resistance on the self-adapting threshold driving circuit, thereby reducing the breakdown possibility.

The invention belongs to an improved turn-off neutron source, and in particular relates to a neutron tube. In the neutron tube, a ceramic insulating ring is filled between an anode cylinder and an ion source cover and another ceramic insulating ring is filled between the ion source cover and an accelerating cylinder, so an air-out space in the neutron tube is reduced, insulating strength is improved, sealing difficulty is reduced and the coaxiality of a system is effectively guaranteed. The neutron tube has the advantages of greatly reducing discharging and puncturing probabilities, guaranteeing the collimation of the neutron tube, improving the product yield, service life and stability of the neutron tube and realizing the industrialization of the machining and manufacturing of the neutron tube, wherein phi50 is taken as an example, the service life of an improved product is increased by more than 3 times, while the product yield is increased by about 5 times, the stability is not more than 3 percent and the finished product ratio is over 90%.

The invention discloses a coil assembly structure and a magnetoelectric crankshaft speed sensor. The coil assembly structure comprises a coil frame and a coil, wherein the coil frame has a winding groove, and the coil is wound within the winding groove of the coil frame. A sidewall of the winding groove is provided with a lead groove recessed to the outside. The lead groove extends from the insideof the winding groove outwards to a surface of the coil frame. The recess of the lead groove is filled with an incoming line of the coil, which enters the winding groove along the lead groove, so that a spacing distance created by the incoming line of the coil filling the recess is at least formed between the incoming line of the coil and an outer layer winding line of the coil. The invention canimprove voltage withstand reliability between the incoming line and coil winding line without changing the magnetization and number of windings of the coil assembly structure.

The invention discloses a solid tantalum electrolytic capacitor comprising a tantalum anode body, an Ra2O5 dielectric envelope, a conducting layer, a graphite layer and a silver coating, wherein the Ra2O5 dielectric envelope is positioned on the surface of the tantalum anode body, the conducting layer is positioned on the Ra2O5 dielectric envelope, and the graphite layer and the silver coating are coated on the conducting layer. The solid tantalum electrolytic capacitor is characterized in that the conducting layer is a mixed system of composite carbon nano tubes and high-polymer conducting materials, the length directions of the composite carbon nano tubes are perpendicular to the surface of the tantalum anode body, the composite carbon nano tubes are carbon nano tubes with the surfaces uniformly attached with nano particles in a shell-core structure, and the nano particles in the shell-core structure are nano particles using magnetic nano particles as cores, wherein the surfaces of the nano particles are coated with conducting shell layers. Because the directionally arranged composite carbon nano tubes are adopted in the conducting layer, the conductivity of the conducting layer is increased, and the equivalent series resistance of the capacitor is reduced, thereby the high-frequency characteristic of the capacitor is improved.

The invention discloses a solid tantalum electrolytic capacitor. The capacitor comprises a tantalum anode body, a Ta2O5 dielectric envelope, a conducting layer, a graphite layer and a silver-coated layer, wherein the Ta2O5 dielectric envelope is positioned on the surface of the tantalum anode body; the conducting layer is positioned on the Ta2O5 dielectric envelope; and the graphite layer and the silver-coated layer are coated on the conducting layer. The capacitor is characterized in that: the conducting layer is a mixed system consisting of a composite carbon nano-tube and a conducting high molecular material; the composite carbon nano-tube is a carbon nano-tube of which the surface is attached to conductive nano-particles and magnetic nano-particles uniformly; and the length direction of the composite carbon nano-tube is vertical to the surface of the tantalum anode body. Directionally-arrayed composite carbon nano-tubes are adopted in the conducting layer, so that the conductivity of the conducting layer is enhanced, the equivalent series resistance of the capacitor is reduced and the high-frequency characteristic of the capacitor is improved; simultaneously, the carbon nano-tube has high thermal conductivity, so that the capacitor has higher heat resistance, the service life of the capacitor is prolonged and the leakage current is reduced.

Ceramic capacitor includes outer electrodes at two ends, three types of inner electrode composed of multiple plate dielectric layers. The inner electrode 1 in first type of dielectric layer is in structure: shape of inner electrode includes 2 to N pieces of rectangle arranged in distance; and external rims of inner electrodes arranged on two sides are connected to outer electrodes at two ends. The inner electrode 2 in second type of dielectric layer is in structure: shape of inner electrode includes 2 to (2N-2) pieces of loop type rectangle. The inner electrode 3 in third type of dielectric layer is in structure: shape of inner electrode includes 2 to (N-1) pieces of rectangle arranged in distance. N is natural number larger than 2. The said three kinds of dielectric layer are stacked in sequence. Comparing with prior art, the invention reduces probability of breakdown caused by distortion of edge electric field, and raises breakdown strength in high voltage.

The invention provides a graphene-polyaniline secondary battery and a preparation method thereof to overcome the technical problem that the capacity of graphite on a negative electrode is not matched with polyaniline in conventional preparation methods for lithium-polyaniline batteries. The negative electrode material of the secondary battery is a graphene or graphene oxide material; the positive electrode of the secondary battery is a polyaniline/carbon material; an electrolyte of the secondary battery is an organic solvent containing lithium hexafluorophosphate; and a diaphragm is a glass fiber diaphragm or polyethylene microporous diaphragm. The invention also provides the preparation method. The graphene-polyaniline secondary battery and the preparation method thereof are applied to the field of battery preparation.

The invention discloses a chip aluminum electrolytic capacitor. The chip aluminum electrolytic capacitor comprises a shell provided with an opening; a core bag is arranged in the shell; an electrolyteis immersed in the core bag; the core bag comprises stacked cathode foil and anode foil; electrolytic paper serving as substrates is arranged on the same sides of the cathode foil and the anode foil;a flash voltage of the electrolyte is higher than 300V, and the temperature resistance of the electrolyte reaches 125 DEG C; the tightness of the electrolytic paper is not less than 0.60g/cm<3>; theanode foil and the cathode foil adopt aluminum foils with high cubic structures; and the content of the cubic structures is more than 80%. According to the chip aluminum electrolytic capacitor, the electrolyte can ensure the flash voltage and obtain relatively high electrical conductivity; the voltage resistance and the high temperature resistance of the capacitor can be improved; the volatilization speed of the electrolyte during high-temperature working can be reduced; the saturated steam pressure can be reduced; the high-voltage resistance and the high-temperature resistance of the aluminumelectrolytic capacitor are improved; the probability that the capacitor is broken down is effectively reduced; and the stability and reliability of a product are improved.

The invention relates to a method for preparing medium-voltage tantalum powder with the improved voltage resisting performance and tantalum powder prepared with the method. The technical scheme that oxygen reduction is carried out after twice heating treatment, the third heating treatment is carried out and the oxygen reduction is performed finally is introduced to the method for preparing the medium-voltage tantalum powder with the improved voltage resisting performance. The oxygen content is controlled, the particle morphology of the tantalum powder is improved, the breakdown resisting performance of a product is improved, leaked currents are modified, and the method for preparing the medium-voltage tantalum powder with the improved voltage resisting performance is applicable to preparing of the medium-voltage tantalum powder with the specific volume ranging from 15000 micron FV per gram and 50000 micron FV per gram.

The invention discloses a solid tantalum electrolytic capacitor comprising a tantalum anode body, a Ta2O5 dielectric envelope, a conducting layer, a graphite layer and a silver coating, wherein the Ta2O5 dielectric envelope is positioned on the surface of the tantalum anode body, the conducting layer is positioned on the Ta2O5 dielectric envelope, and the graphite layer and the silver coating are coated on the conducting layer. The solid tantalum electrolytic capacitor is characterized in that the conducting layer is a high-polymer conducting layer doped with magnetic carbon nano tubes, wherein the length directions of the magnetic carbon nano tubes are perpendicular to the surface of the tantalum anode body. Because the directionally arranged magnetic carbon nano tubes are adopted in the conducting layer, the conductivity of the conducting layer is increased, the equivalent series resistance of the capacitor is reduced so that the high-frequency characteristic of the capacitor is improved, and meanwhile, because the carbon nano tubes have excellent thermal conductivity, the capacitor has higher thermal resistance, prolonged service life, and reduced leakage current.

The invention discloses a pair of insulating gloves. Each insulating glove comprises a glove main body, insulating plastic, a waterproof layer, a void-free epoxy glass cloth laminated insulating layer, a drying layer and a moisture absorption layer. Each glove main body comprises the corresponding moisture absorption layer, the corresponding drying layer, the corresponding void-free epoxy glass cloth laminated insulating layer and the corresponding insulating plastic in sequence from inside to outside. Each void-free epoxy glass cloth laminated insulating layer is packaged by waterproof cloth in a sealing manner, and is formed by overlapping and compressing multiple layers of epoxy glass cloth. The insulating plastic is made from electrical insulation plastic. Each moisture absorption layer is used for absorbing moisture on the inner surface of the corresponding glove and transferring the moisture to the corresponding drying layer which is internally provided with a desiccant. By adopting the mode, the pair of insulating gloves disclosed by the invention has the functions of moisture absorption and electrical insulation.

The invention discloses a novel capacitor. The novel capacitor comprises a shell, the upper end of the shell is provided with a first left pin, a second left pin, a first right pin and a second right pin which are independently insulated. A vertical hollow mandrel is arranged in the shell and made of plastics and other insulating materials. A first metallized film is wound on the mandrel. The first left pin is electrically connected to the upper end of the first metallized film through a connection line. The second left pin is electrically connected to the lower end of the first metallized film through a connection line penetrating through the mandrel, that is, the first metallized film, the first left pin electrically connected with the first metallized film and the second left pin form a first independent capacitor body. The capacitor has the advantages of being low in cost, little in loss, good in self-healing performance, long in service life, high in safety protection level and the like.

The invention discloses an ESD (Electronic Static Discharge) protecting unit, an array base plate, a liquid crystal display panel and a display device and belongs to the technical field of liquid crystal display. The invention aims to solve the problem of poor ESD protecting effect during a preparation process of the array base plate. The ESD protecting unit comprises a thin film transistor, a gate line and a data line, wherein a grid electrode of the thin film transistor is exposed in an area formed by the data line and the gate line; a source electrode of the thin film transistor is connected with the data line; a drain electrode of the thin film transistor is connected with the gate line; or the source electrode of the thin film transistor is connected with the gate line and the drain electrode of the thin film transistor is connected with the data line. The liquid crystal display panel comprises the array base plate containing the ESD protecting unit, wherein the drain electrode of the thin film transistor is connected with a direct current negative voltage source in each ESD protecting unit. The ESD protecting unit provided by the invention is applicable to the display device.

The invention provides a semiconductor device and a forming method thereof, and the method comprises the following steps: providing a substrate, and forming a first sub-fin part after removing a partof fin parts in thickness on the substrate; adjusting the end, away from the substrate, of the first sub-fin part to enable S1 to be greater than or equal to S2, wherein S1 is the distance from the middle area of the end face of one end of the first sub-fin part to the substrate, and S2 is the distance from the edge area of the end face of the first sub-fin part to the substrate, and in a cross section formed perpendicular to the length direction of the first sub-fin part, the contour line of one side, far away from the substrate, of the first sub-fin part is in smooth transition. The semiconductor device is manufactured through the forming method of the semiconductor device. The distance from the middle area of the end face of one end of the first sub-fin part to the substrate is greaterthan or equal to the distance from the edge area of the first sub-fin part to the substrate, the contour line of the side, away from the substrate, of the first sub-fin part is in smooth transition, the probability that the bottom area of the first sub-fin part is broken down by voltage can be reduced, and therefore the performance of the semiconductor device is optimized.

The invention provides a corona-resistant cable and a preparation method thereof, and particularly relates to the technical field of cable materials. Corona-resistant paint obtained by polymerizing acrylic resin, dragon's blood extract and porphyrin compounds is dip-coated on the surface of a wire, and then dry ice powder is sprayed to reinforce the paint dip-coated on the wire. And then the wireis coated with a composite rubber material prepared from enzymolysis carbonate, guayule rubber, carbon aerogel mixing, peanut shell fiber extraction and zirconium oxide, and then coated with an outerprotective layer, so as to prepare the corona-resistant cable. The cable has good corona resistance, oxidation resistance, acid resistance and mechanical strength, the corona resistance can be as longas 450 minutes, the cable still has high corona resistance after being tested for 7 days in high-temperature, high-humidity, oxidizing and acid environments, and the cracking phenomenon does not occur; meanwhile, the insulating property is good, and breakdown is not likely to happen. The method is stable in process, controllable in parameter, easy to repeat and suitable for large-scale production.