184results about How to "High withstand voltage" patented technology

A semiconductor device having a super junction MOS transistor includes: a semiconductor substrate; a first semiconductor layer on the substrate; a second semiconductor layer on the first semiconductor layer; a channel forming region on a first surface portion of the second semiconductor layer; a source region on a first surface portion of the channel forming region; a source contact region on a second surface portion of the channel forming region; a gate electrode on a third surface portion of the channel forming region; a source electrode on the source region and the source contact region; a drain electrode on a backside of the substrate; and an anode electrode on a second surface portion of the second semiconductor layer. The anode electrode provides a Schottky barrier diode.

A manufacturing method of a silicon carbide semiconductor device includes the steps of: preparing a semiconductor substrate including a silicon carbide substrate, a drift layer and a first semiconductor layer; forming a plurality of first trenches in a cell portion; forming a gate layer on an inner wall of each first trench by an epitaxial growth method; forming a first insulation film on the surface of the semiconductor substrate; forming a gate electrode on the first insulation film for connecting to the gate layer electrically; forming a source electrode on the first insulation film for connecting to the first semiconductor layer in the cell portion; and forming a drain electrode connected to the silicon carbide substrate electrically.

The invention discloses a press fit method for a high-voltage-resistant PCB with a thick copper plate. The method includes the following steps: S1, cutting, i.e., cutting an outer-layer copper foil, a polyimide medium, pure-glue prepreg and a polyimide copper-clad plate according to required dimensions; S2, inner-layer pattern making; and S3, conducting press fit after plate lamination, the press fit including the first heating stage at the temperature of 100-140 DEG C, the second heating stage at the temperature of 140-180 DEG C, the third heating stage at the temperature of 180-220 DEG C, a warm-keeping stage, the first cooling stage at the temperature of 220-150 DEG C and the second cooling stage at the temperature of 150-100 DEG C. Conventional FR-4 prepreg is replaced by a polyimide material that has higher glass transition temperature and exhibits higher resistance to voltage, so a PCB with a thick copper plate is made to have the excellent resistance to voltage, and polyimide having high glass transition temperature can effectively ensure that resin is fully filled among lines during press fit. Moreover, press fit parameters can be adjusted and the operating time of a high-temperature and high-voltage stage can be prolonged, thus helping polyimide materials to fully fill line gaps in a high-temperature and high-voltage condition.

A mulitilayer A capacitor includes a plurality of dielectric substrates (2) which are layered; a pair of terminal electrodes formed on the plurality of dielectric substrates; a plurality of internal electrodes (3) arranged on each of the dielectric substrates and having outer edges (30) opposed apart by a predetermined interval, wherein at least one of the internal electrodes (3) is arranged apart from the adjacent internal electrode (3) by the maximum interval (5) at the center of the outer edges (30).

The invention discloses a preparation method for the carbon electrode material of a high-energy-density super capacitor which is characterized by pre-carbonizing a refinery coke or other form bodies rich in carbon for 0.5 to 5 hours under the temperature of 400 to 900 DEG C; then carrying out ball milling on the refinery coke or other form bodies rich in carbon to 4 to 30 Mum; then carrying out dipping and mixing with KOH at a weight percentage ratio of 1: 3 to 1: 6 (or simultaneously adding the metal salt of 5 to 20wt percent); after physical dehydration, chemical dehydration and activating hole making by being cooperated with catalyzing are carried out on the matters respectively under the temperatures of 100 to 250 DEG C, 300 to 500 DEG C and 700 to 1000 DEG C, then surface chemical treatment in an H2 atmosphere is carried out on the matters under the temperature of 500 to 900 DEG C to manufacture the carbon electrode material. The invention adopts the pre-carbonizing or the combining technology of catalyzing chemical cooperated with activation to manufacture the carbon electrode material; the invention has higher energy density and power density compared with the existing carbon electrode material as the power storage principle of the invention is different from a double electric layer power storage principle.

The invention relates to a heat resistant alcohol-soluble self-bonding paint used for self-bonding insulated winding wire and manufacturing method thereof. The self-bonding paint contains the following components by weight percent: 35-45% of cresol, 35-45% of dimethylbenzene, 5-20% of H2 nylon, 3-7% of Es-7 nylon, 0.1-1% of AS resin, 0.1-2% of E51 epoxy resin and 0.01-0.1% of 594 curing agent. Compared with the prior art, the invention is simple in technology, the heat resistant alcohol-soluble self-bonding paint obtained by adopting the invention is coated outside a three-layer insulated winding wire to form a self-bonding three-layer insulated winding wire, and unframed coil formed by the winding wire has high withstand voltage and good high frequency performance and accords with the development trend of the current information industry.

The invention relates to a preparation process, an electrolyte and an electrochemical element of electrolytic salt. Polycyclic tertiary amine serves as a raw material, the electrolytic salt is prepared through a quaternarization reaction, the electrolyte is composed of the electrolytic salt and a nonaqueous solvent, and the electrochemical element uses the electrolyte. The supercapacitor organic electrolyte of the electrolytic salt prepared by the preparation process can meet requirements of a supercapacitor for electrochemical and chemical stability; a series of the polycyclic tertiary amine is subjected to the simple quaternarization reaction, a series of the electrolytic salt with high purity is prepared, the process cost is low, and the target product yield is high; and the device investment is low, the operation is easy, the yield is high, the post treatment is simple and large-scale production is suitable.

Provided is a high-performance solid electrolytic capacitor that can be produced with stability. The solid electrolytic capacitor is a capacitor comprising an anode foil, a cathode foil, and separators arranged between the anode foil and the cathode foil. The anode foil, the cathode foil, and the separators are wound around so as to have the separator intervene between the anode foil and the cathode foil. The anode foil has a dielectric oxide-film layer, and the separators comprise a solid electrolyte and a nonwoven fabric that holds the solid electrolyte. The nonwoven fabric, which composes the separator, is a laminated nonwoven fabric having at least two nonwoven fabric layers, and the laminated nonwoven fabric comprises: a nonwoven fabric layer (layer I) composed of extra-fine fiber with a fiber diameter of 0.1-4 [mu]m; and a nonwoven fabric layer (layer II) composed of thermoplastic resin fiber with a fiber diameter of 6-30 [mu]m.

The invention discloses a glass insulator used for encapsulation connection between the metal end cover and the metal conductive columns of the wiring terminal of a compressor. The glass insulator comprises the components with the weight percentage as follows: 92-94 percent of SiO2, 3-4 percent of Al2O3, 0.5-1 percent of Bi2O3, 0.5-1 percent of TiO2 and 1.5-2.5 percent of SrO, preferably, 93 percent of SiO2, 33.3 percent of Al2O3, 0.7 percent of Bi2O3, 0.8 percent of TiO2 and 2.2 percent of SrO. The glass insulator not only has favorable insulating performance and avoids flashover generated during operation, but also has low probability of generation of crackle under the long-term action of the alternating current of the metal columns, therefore an explosion hazard of the compressor is avoided, and the glass insulator is suitable for widely applied in the wiring terminal of the compressor.

The invention discloses a structure for transformer bobbin bracket, which takes a shape of a hollow pipe body. A plurality of separators are arranged on the transformer bobbin bracket and at least one trans-line groove is arranged on the separator and used for providing space for the coil to cross the separator; the trans-line groove is designed to be slantingly tangent with the separator so as to increase the laying distance of the coil, and the depth of the trans-line groove presents a slant shape or ladder shape which is higher at one side and lower at the other side to ensure that the line of the coil enters at a higher position and goes out at a lower position when the lines of the coil are laid so as to increase the relative distance between two neighboring groups of coils of the separator, thereby effectively increasing the withstanding voltage of the separator of the bobbin bracket and relatively shortening the thickness of the separator of the bobbin bracket so as to further shorten the size of the transformer.

The invention discloses an electrolyte mixture, a composition for conductive polymer synthesis and conductive polymer solid electrolytic capacitor formed by using the same. The electrolyte mixture includes a conductive polymer and a nitrogen-containing polymer. The nitrogen-containing polymer includes a cyclic nitrogen-containing polymer, a polymer with primary amine group, a polymer with secondary amine group, a polymer with tertiary amine group, a polymer with quaternary ammonium group, or a combination thereof. The interface impedance between the conductive polymer and the oxide film can be facilitated by additionally providing the cyclic nitrogen-containing polymer, and the filming performance of the conductive polymer can be improved, the conductivity of the conductive polymer can be improved, and by applying the cyclic nitrogen-containing polymer to the solid electrolytic capacitor, the capacitance, the reliability, the voltage resistance performance, and the thermal resistance performance of the solid electrolytic capacitor can be improved, the dissipation factor value, the 120kHz equivalent series resistor, and the service lifetime can be reduced.

The invention aims at providing aluminum electrolytic capacitor electrolyte with excellent heat stability. Meanwhile the invention also provides an aluminum electrolytic capacitor prepared by the electrolyte. The electrolyte comprises following components of organic solvent and 2-hexyl ammonium adipate or combination of 2-hexyl ammonium adipate and ammonium salt of the 2-hexyl ammonium adipate. The electrolyte has better heat stability.

There are provided a power supplying apparatus, a method of operating the same, and a solar power generation system including the same. The power supplying apparatus includes: a power supply unit generating a direct current (DC) input signal; a main circuit unit including a plurality of flyback converter circuits connected to the power supply unit to generate a DC output signal; and a control circuit unit controlling an operation of the main circuit unit, wherein the control circuit unit connects the plurality of flyback converter circuits to each other in series or in parallel according to a level of the DC input signal. Therefore, even in the case in which the level of the DC input signal is high, a circuit maybe configured using a circuit device having a low withstand voltage range and damage and deterioration of the circuit device may be prevented.

The invention discloses a preparation method of high-purity alkylammonium tetrafluoroborate for a super capacitor, characterized by reacting tertiary amine with tetrafluoroborate alcoxylonium salt at a certain temperature to obtain corresponding alkylammonium tetrafluoroborate, and purifying to obtain the high-purity alkylammonium tetrafluoroborate. The method has the advantages of simple operation steps, good selectivity, high conversion rate, high product purity, and no halogen ions, and can satisfy the requirements of a high performance super capacitor. The use of the prepared alkylammonium tetrafluoroborate as an electrolyte in the super capacitor can achieve the advantages of high product capacity, low internal resistance, and reduced capacity fade at a high temperature.

The present invention relates to a method for manufacturing a hybrid transparent electrode and a hybrid transparent electrode, the method comprising: an ink composition filling step for filling a conductive metal ink composition into a groove on a base material having the groove; a remaining ink composition filling step of forming an electrode pattern by filling the groove with the conductive metal ink composition remaining on the surface of the base material, as the conductive metal ink composition is filled in the groove; and a conductive layer forming step of forming a conductive layer comprising a conductive material on top of the electrode pattern.

The invention provides a method for preparing a high voltage-resisting chip type ceramic capacitor and relates to the technical field of electronic information materials and elements. The method comprises the procedures of dispersing of ceramic slurry, curtain coating of ceramic membranes, printing of inner electrode, staggered lamination, uniform pressing, cutting, plastic removal, sintering, chamfering, end coating and silver electrode firing, wherein a solvent for the ceramic slurry adopts methylbenzene and ethanol, during printing of inner electrode, the inner electrode is made of a silver palladium alloy which is sintered at a low temperature, during end coating, the end electrode is made of silver (Ag), particularly, during dispersing of ceramic slurry, ceramic powder adopts Ba-Ti-Nd based ceramic powder, particle sizes of the Ba-Ti-Nd based ceramic powder are within a range of 0.22-0.95mu m of spherical or approximately spherical bodies, and the solvent for the ceramic slurry adopts a mixture of the methylbenzene and the ethanol in a proportion of (1-2.5):1. By the aid of the method for preparing the high voltage-resisting chip type ceramic capacitor, the high-frequency high voltage-resisting chip type ceramic capacitor can be manufactured effectively, and simultaneously, the manufacturing cost can be reduced effectively.

An insulating gate type semiconductor device being capable of easily depleting an outer periphery region is provided. The insulating gate type semiconductor device includes: first to fourth outer periphery trenches formed in a front surface of a semiconductor substrate; insulating layers located in the outer periphery trenches; fifth semiconductor regions being of a second conductive type and formed in ranges exposed to bottom surfaces of the outer periphery trenches; and a connection region connecting the fifth semiconductor region exposed to the bottom surface of the second outer periphery trench to the fifth semiconductor region exposed to the bottom surface of the third outer periphery trench. A clearance between the second and third outer periphery trenches is wider than each of a clearance between the first and second outer periphery trenches and a clearance between the third and fourth outer periphery trenches.

The invention relates to a machining method of a metal packaging shell of a large-scale and large-power integrated circuit. The shell comprises a base and an outer cover, wherein the base is composed of a base plate, a plurality of glass blanks and a plurality of terminal pins; a plurality of first through holes for holding the terminal pins and the glass blanks are formed on the base plate; and the terminal pins are arranged inside the first through holes on the base plate through the glass blanks. When the base and the outer cover are machined well, required elements such as integrated circuits and modules are installed on the base; and the outer cover is welded with the base; the integrated circuits, the modules and the like are fixed on the base of the metal shell, and are connected with external tested devices through leading-out terminals of the terminal pins, thereby accomplishing the output, input and detection and control functions of system signals. The outer cover is welded with the base; the integrated circuits and the modules are sealed inside the metal shell, so that both the functions of signal output, detection and control are achieved, and the internal circuit is prevented from being influenced by various external severe environments.

It is intended to provide a high withstand voltage field effect type semiconductor device that relaxes electric fields in a semiconductor substrate without thickening thickness of a drift region and achieves withstand-ability against high voltage without sacrificing ON-voltage, switch-OFF characteristics, and miniaturization. A field effective type semiconductor device comprises emitter regions 100, 104 and gate electrodes 106 and the like on a surface (upper surface in FIG. 2), a collector region 101 and the like on the other surface (lower surface in FIG. 2), wherein N⁻ field dispersion regions 111 of low impurity concentration are arranged between P body regions 103 facing to gate electrodes 106 and an N drift region 102 below P body regions 103. Thereby, electric field between collector and emitter is relaxed and high withstand voltage field effect type semiconductor device is realized. Another field dispersion region can be arranged between the N drift region 102 and P⁺ collector region 101 below the N drift region 102.

The invention discloses a chip-type through-hole gold electrode chip capacitor and a preparation method thereof. The preparation method comprises the following steps of taking a low-sintered X7R ceramic material of a barium titanate system as a main base material, enabling an oxidant and a glass sintering aid to be grinded and mixed according to a proportion, and then drying the mixture to obtaina dry mixture; performing pre-burning on the dried mixture, and carrying out drying, crushing and refining to obtain multi-layer low-temperature sintered capacitor ceramic powder; enabling the multi-layer low-temperature sintered capacitor ceramic powder, absolute ethyl alcohol and a dispersing agent, a defoaming agent and an adhesive to be mixed and ball-milled to obtain slurry, enabling the slurry to be poured on a PET carrier film of an injection port of a casting machine, wherein a stable and tough micron-scale thickness ceramic membrane strip is formed after the mixture passes through a scraper and a heating region; and equivalently, a capacitive element which integrates the advantages of an MLCC and an SLC can be prepared by simulation design of the product structure parameters, development of the low-sintered ceramic dielectric material, application of filling hole gold slurry and inner electrode gold slurry, an end surface electrode forming mode and other process technologies.