2474results about "Stacked capacitors" patented technology

The invention belongs to the technical field of nickel electrode slurry preparation, discloses a preparation process of ultra-fine particle size roll-printed nickel electrode slurry for an ultra-high capacity MLCC, and aims to solve the problems that in the prior art, ultra-fine nickel powder is easy to oxidize, the cost of covering nickel nitride powder is high, a covering layer is easy to damage and agglomerate during dispersion, and the performance of the slurry is poor. The method comprises three steps of raw material pretreatment, synchronization of material dispersion and nitridation, post-treatment and nitrogen protection, wherein the pretreatment is used for removing impurities and preventing oxidation, dispersion and nitridation are carried out synergistically through a sand mill and an ultrahigh-pressure homogenizer in a graded regulation and control mode, the post-treatment comprises filtering, inspection and double-layer vacuum packaging, the raw materials are prepared according to a specific proportion, key parameters are precisely regulated and controlled, and finally the slurry is prepared. Roll printing adaptability and co-firing requirements are met, independent nitridation and reduction procedures are omitted, cost is reduced, slurry uniformity, dispersion stability and MLCC reliability are improved, and large-scale mass production can be achieved.

The invention discloses an interface covalently bonded core-shell structure boron nitride polypropylene composite dielectric material and a method. The interface covalently bonded core-shell structure boron nitride polypropylene composite dielectric material comprises a maleic anhydride grafted polypropylene matrix and a core-shell structure filler dispersed in the maleic anhydride grafted polypropylene matrix, the core-shell structure filler comprises hydroxylated boron nitride nanoparticles covalently grafted on a polymer shell layer on the surface of the core-shell structure filler; the polymer shell layer is polyglycidyl methacrylate; the epoxy group of the polymer shell layer reacts with the anhydride group of the maleic anhydride grafted polypropylene matrix to form a covalent bond. The invention has the characteristics of strong interface bonding force, uniform filler dispersion, and excellent comprehensive electrical properties and processability.

The invention provides a capacitor core rod plug dismounting device, and belongs to the technical field of capacitor preparation, and the device comprises a strip-shaped frame which is vertical and is provided with two open ends, and the front and rear inner side surfaces are provided with guide grooves; the clamping assembly comprises two movable rods arranged on the two sides of the strip-shaped frame respectively, the axes of the two movable rods are coaxial and are perpendicular to the side face of the strip-shaped frame, and the opposite ends of the two movable rods are elastically arranged in a telescopic mode along the axes and are provided with clamping plates; the two movable rods are synchronously and oppositely arranged along the axis in a moving manner; the pair of bearing rods is horizontally arranged below the strip-shaped frame and perpendicular to the side face of the strip-shaped frame, and the two bearing rods are movably arranged in the width direction of the strip-shaped frame; the dismantling assembly comprises two pairs of top plates which are vertically arranged below the corresponding guide grooves respectively, and the top plates are movably arranged in the width direction of the strip-shaped frame and the axis direction of the movable rod; the two bearing rods respectively penetrate through the two pairs of top plates; and the transmission assembly is arranged between the movable rod and the bearing rod. The dismounting device can achieve the purpose of automatically pulling out the plug, and the production efficiency of the thin film capacitor is improved.

A multilayer ceramic electronic component includes a multilayer body including first and second internal electrode layers extending first and second end surfaces, first and second external electrodes respectively on the first and second end surfaces and respectively connected to the first and second internal electrode layers. The first external electrode includes first and third Cu plating layers, the second external electrode includes second and fourth Cu plating layers. Average numbers of Cu particles are about 1.5 or less in two or more first or second square regions of the first and second Cu plating layers. Average numbers of Cu particles are more than about 1.5 in two or more third or fourth square regions of the third and fourth Cu plating layer. The first square regions to the fourth square regions each has a square or substantially square shape with each side having a dimension of about 2 μm.

To provide a conductive paste for an internal electrode of a layered ceramic capacitor, which is capable of maintaining relatively high coverage even if the internal electrode constitutes a thin layer.SOLUTION: Provided is a conductive paste for forming internal electrodes 4 and 5 of a layered ceramic capacitor 1 fabricated through a firing step. The conductive paste includes conductive metal powder, ceramic powder, an organic solvent, and an organic binder. The conductive metal powder contains a silver / palladium alloy. At least a portion of the ceramic powder comprises an ABO3 type oxide having a specific ion radius in which the ratio of the ion radius in the 6-coordination of an element at the A site in ABO3 with respect to the ion radius in the 6-coordination of a metal element contained in the conductive metal powder is 0.96 or more and 1.10 or less.SELECTED DRAWING: Figure 1

The invention relates to the technical field of capacitor films, and discloses a modified polypropylene base film for a capacitor and a preparation method of the modified polypropylene base film. The modified polypropylene base film for the capacitor is prepared from the following raw materials in parts by weight: 90 to 110 parts of polypropylene, 20 to 30 parts of hyperbranched organic silicon, 10 to 15 parts of a composite modifier, 3 to 5 parts of a compatilizer, 0.3 to 0.6 part of an antioxidant and 0.5 to 1.5 parts of a lubricant, according to the base film, polypropylene is used as a main raw material, hyperbranched organic silicon, a composite modifier, a compatilizer and other auxiliaries are added for modification, the polypropylene base film is endowed with excellent breakdown resistance, dielectric property and high temperature resistance, and the base film has wide application prospects in capacitors.

The present application relates to the technical field of dielectric ceramic powder preparation, and particularly relates to a multilayer ceramic capacitor, a high-activity nano-barium titanate powder for the multilayer ceramic capacitor and a preparation method of the high-activity nano-barium titanate powder, the method comprising the following steps: (1) reacting a soluble barium salt with a precipitator to obtain barium carbonate precursor particles with high specific surface area; (2) uniformly coating nano-titanium dioxide particles on the surface of the barium carbonate precursor particles by using a supercritical fluid flash technology to form a composite precursor; and (3) performing a solid-phase synthesis reaction on the composite precursor and sintering to obtain nano-barium titanate powder. The present application, through the synergistic effect of the two means of "high-activity precursor preparation" and "nano-level uniform coating", prepares a composite precursor with extremely high specific surface area, surface energy and micro-uniformity, effectively reduces the heat sintering temperature, suppresses abnormal grain growth and lattice distortion, and significantly improves the tetragonality of the nano-barium titanate powder.

An electronic device and a manufacturing method including a dielectric layer according to at least some embodiments are disclosed. The electronic device includes a first electrode, a second electrode spaced apart from the first electrode, a first dielectric layer between the first electrode and the second electrode, a second dielectric layer having a rutile phase, a third dielectric layer between the first dielectric layer and the second electrode, and a third dielectric layer between the second dielectric layer and the second electrode and including a material having a higher energy bandgap than a material included in the second dielectric layer.

The invention relates to a base metal high-voltage multilayer ceramic dielectric capacitor and a preparation method, the base metal high-voltage multilayer ceramic dielectric capacitor is formed by stacking and firing dielectric layers, and each dielectric layer comprises a dielectric layer and an electrode printed on the dielectric layer. The dielectric layer comprises the following raw materials: a BMYT main matrix, an NN material, magnesium oxide, manganous-manganic oxide, zirconium dioxide, calcium carbonate, strontium carbonate and rare earth oxide; through the raw material composition and the preparation method of the ceramic dielectric capacitor, the prepared ceramic dielectric capacitor has excellent performances of high dielectric constant, high voltage resistance, stable dielectric-temperature characteristic curve, low loss, high insulation resistance, long-term high-voltage reliability and the like under the condition of high dielectric thickness (30 microns before firing).

A filter apparatus includes first to third resonators magnetically coupled and located in a signal transmission path from an input terminal to an output terminal. Each of the resonators includes a capacitor electrode and an inductor path. The capacitor and a ground electrode define a capacitor. The inductor path connects the capacitor and ground electrodes. The inductor path in the second resonator includes first and second lines electrically connected in parallel, between the capacitor electrode of the second resonator and the ground electrode. A first interconnection pattern connects the inductor path in the first resonator and the first line. A third interconnection pattern connects the inductor path in the third resonator and the second line. A second interconnection pattern connects the first and second lines at a position different from a position of connection of the first interconnection pattern in the first line.

A multilayer electronic component includes a body including a capacitance formation portion including a dielectric layer and internal electrodes alternately arranged in a first direction and cover portions disposed on the capacitance formation portion in the first direction, first to sixth surfaces; external electrodes disposed on the third and fourth surfaces; side margin portions disposed on the fifth and sixth surfaces; and a first extension portion disposed to extend to portions of the first and second surfaces, and wherein at least a partial region of the first extension portion has a curvature, wherein when an average thickness of the side margin portion is WM0 and a radius of curvature of at least a portion of the first extension portion is R, WM0 and R may satisfy 1.1<R / WM0<2.

The invention discloses a flame-retardant breakdown-resistant capacitor base film and a preparation method thereof. The flame-retardant breakdown-resistant capacitor base film is prepared from the following raw materials in parts by weight: 100 parts of polypropylene; 3.5 to 8.5 parts of a compatilizer; 14-25 parts of a flame-retardant dielectric modified filler; 0.3 to 1 part of an antioxidant; 0.5 to 1.8 parts of a nucleating agent; wherein the flame-retardant dielectric modified filler is a composite microcapsule obtained by coating the core material with nano magnesium hydroxide as a core material and silicon dioxide modified polydopamine as a wall material. The flame-retardant dielectric modified filler is added into a polypropylene system, so that the prepared polypropylene capacitor base film can be endowed with excellent flame retardance, the mechanical strength of the base film can be improved, the dielectric constant of the base film can be improved, the electric breakdown resistance of the polypropylene capacitor base film can be improved, and the comprehensive performance of the polypropylene capacitor base film can be improved.

The present application belongs to the technical field of polymer dielectric energy storage material, and discloses a preparation method of a full-organic small-molecule composite polymer film and a product. The preparation method comprises the following steps: mixing a mixed solution of PVDF and PMMA with a PE EU solution to form a pre-preparation solution; casting the pre-preparation solution on a substrate and heating and drying, and then heat treating in a vacuum environment to obtain the required composite polymer film. The present application also discloses the product prepared by the above preparation method. Through the present application, the problems of low discharge energy density and charge-discharge efficiency of ferroelectric-based polymer films are solved.

To provide a multilayer ceramic capacitor in which occurrence of cracking or chipping at a boundary part between an end face side ineffective part and a vertical ridge line ineffective part of a laminated body is prevented.SOLUTION: A multilayer ceramic capacitor 1 includes: a multilayer body 10 including a plurality of stacked dielectric layers 20 and a plurality of internal electrode layers 30; and an external electrode 40 disposed so as to be electrically connected to the internal electrode layers 30. An outer surface of the multilayer body 10 at a boundary part VLB between an end face side ineffective part LG and a vertical ridge line ineffective part VG, the outer surface of a vertical ridge line ineffective part VG, and the outer surface of the multilayer body at a boundary part VWB between the vertical ridge line ineffective part VG and the side face side ineffective part WG form a continuous curved surface VR protruding outward in a plan view from a multilayer direction T, and a protective film SC containing carbon and silicon as constituent elements is formed on the curved surface VR.SELECTED DRAWING: Figure 3

A disclosed multilayer ceramic electronic component includes: a stacked body that includes a plurality of dielectric layers stacked in a first direction and a plurality of internal electrodes stacked in the first direction; and a first external electrode, a second external electrode, a third external electrode, and a fourth external electrode that are disposed outside the stacked body. The plurality of internal electrodes includes a plurality of first internal electrodes connected to the first external electrode and the second external electrode and a plurality of second internal electrodes connected to the third external electrode and the fourth external electrode, and an edge of a cross-section of the stacked body that intersects the first direction is a curve.

The application discloses a quinoline small molecule blended modified polymer dielectric material and a preparation method and application thereof, and belongs to the technical field of capacitor films. The preparation raw materials comprise quinoline derivatives, polymethyl methacrylate, styrene-methyl methacrylate copolymer, polyetherimide, polypropylene and N-methyl pyrrolidone solution, and the preparation steps comprise blending and film preparation. The blending solution or eutectic mixture is prepared through blending, and the polymer dielectric film is prepared through a flow casting method or bidirectional stretching. The prepared quinoline small molecule blended modified polymer dielectric film has excellent electrical properties, can reduce the leakage current of the polymer material, has high DC breakdown field strength, high energy storage density and low energy loss, and is easy to realize large-scale production.

A method for preparing a green-body chip of three-terminal multi-layer ceramic capacitive filter is provided. The method includes: providing a printing plate which includes a pattern of a tabbed electrode and a pattern of a through electrode, the pattern of the tabbed electrode and the pattern of the through electrode, an avoiding portion is provided on a position of both sides of the through electrode corresponding to the tab of the tabbed electrode. A supporting pattern is provided on both ends of the tabbed electrode; placing the printing plate and performing electrode printing on the green sheet after casting; stacking the green sheet after printing according to a certain offset, and laminating after stacking to obtain a block; dicing the block to obtain the green-body chip of three-terminal multi-layer ceramic capacitive filter.

In certain examples, methods and semiconductor structures are directed to a force-sensing apparatus (e.g., synthetic skin) comprising an electrode layer and a plurality of deformation-recoverable microstructures in a dielectric region adjacent the electrode layer. In various examples, the deformation-recoverable microstructures are at randomly configured (e.g., in terms of morphology and / or spatial distribution) and, as in a capacitive-type sensor, the dielectric region may include a dielectric layer between a pair of electrode layers and with the dielectric layer and / or at least one of the electrode layers having such deformation- recoverable microstructures integrated into a surface and extending in a direction to sense forces applied towards or against the force-sensing apparatus.

A method for manufacturing a multi-layer ceramic capacitor (MLCC) end electrode and printing a full-area inner electrode protective layer is disclosed. The method uses thin dielectric ceramic layer thickness and a plurality of nickel inner electrode stacks to achieve high capacitance. The method produces high-density electrode-to-ceramic ratio end edges and side edges. The method uses an ultralow-temperature electrochemical deposition coating technology to manufacture a low-stress multi-layer ceramic capacitor end electrode and an insulating protective layer, thereby improving the yield of the multi-layer ceramic capacitor and reducing manufacturing costs.

A multilayer ceramic capacitor includes internal electrode layers including first internal electrode layers, second internal electrode layers, and intermediate electrode layers. At least a portion of each of the intermediate electrode layers has a coverage higher than a coverage of a region of a first counter portion of each of the first internal electrode layers adjacent to a first end surface, and a coverage higher than a coverage of a region of a second counter portion of each of the second internal electrode layers adjacent to a second end surface.

A multilayer electronic component is provided, the multilayer electronic component, including: a body including a dielectric layer and internal electrodes alternately disposed with the dielectric layer interposed therebetween in a first direction, the body having first and second surfaces opposing each other in the first direction, third and fourth surfaces connected to the first and second surfaces and opposing each other in a second direction, fifth and sixth surfaces connected to the first to fourth surfaces and opposing each other in a third direction; and an external electrode disposed on the third and fourth surfaces of the body and connected to the internal electrodes. At least one of the internal electrodes includes an interfacial layer disposed on at least a portion of a region connected to the external electrode, and the interfacial layer includes an oxide containing Fe.

A multilayer ceramic electronic component includes a multilayer body and a pair of external electrodes at both ends of the multilayer body. The external electrodes include a main surface-side external electrode including a recess recessed towards a multilayer body side in a cross-sectional view along a lamination direction and a length direction of the multilayer body, and peripheral regions adjacent to the recess in the length direction. A surface roughness of the recess is rougher than a surface roughness of the peripheral regions.

The invention relates to the technical field of multilayer ceramic capacitors, in particular to an MLCC product. The MLCC product comprises a plurality of blank dielectric layers and a plurality of inner electrode layers which are alternately stacked along a lamination direction, and a first end electrode and a second end electrode which are respectively positioned at two sides of the inner electrode layers, the inner electrode layer comprises a first type electrode layer and a second type electrode layer which are arranged in a crossed manner and are respectively connected to the first end electrode and the second end electrode; the stacking sequence of the inner electrode layers comprises at least one strengthening section in the stacking direction, and in the strengthening section, the number of at least one continuously arranged inner electrode layer of the same type is not less than 2. The MLCC product has a new stacking design, the sintering strength of the strengthening section can be improved, the voltage endurance capability and the current endurance capability of the strengthening section are improved, the failure rate in a voltage endurance experiment and a high-temperature and high-pressure experiment is reduced, and therefore the consistency and the reliability of the MLCC product are remarkably improved.

Provided is a multilayer ceramic capacitor that maintains electrical characteristics and ensures sufficient mechanical strength. In a multilayer ceramic capacitor (1), in a surface layer region (400), a side edge portion (16) includes a first segregation substance (133) having silicon as a main component and having a major diameter of 10 nm to 50 nm, and a second segregation substance (135) having silicon as a main component and having a major diameter of 1 [mu] m or more, a plurality of second segregation substances (135) are present in a cross section, and in the surface layer region (400), an additive component is included. The additive component includes at least one of zirconium, aluminum, titanium, and calcium, and the concentration of the additive component in the surface layer region (400) is higher than the concentration of the additive component in the inner region (402).

The base portion includes: a first outer layer portion (X1) positioned closer to the first main surface side than an internal electrode layer closest to the first main surface side in the stacking direction among the plurality of internal electrode layers; and a second outer layer section that is positioned closer to the second main surface side than an internal electrode layer that is closest to the second main surface side in the stacking direction among the plurality of internal electrode layers. The first outer layer portion (X1) and the second outer layer portion each include an outermost layer portion (Xa) disposed on the outermost side and an inner layer portion (Xb) located on the inner side of the outermost layer portion (Xa). The maximum height (Ha) of the irregularities on the outer surface of the outermost layer section (Xa) is smaller than the maximum height (Hb) of the irregularities on the outer surface of the inner outer layer section (Xb).

This invention provides an X9R type MLCC ceramic powder based on chitosan oligosaccharide-assisted solid-phase synthesis and its preparation method, relating to the field of multilayer chip ceramic capacitor technology. The X9R type MLCC ceramic powder of this invention is prepared using a chitosan oligosaccharide-assisted solid-phase method, and the powder is Ba... 0.985‑y‑ z Bi 0.01 La y Dy z Ti 1‑a‑b‑c Mg a Ho b Ca c O3, where y=0-0.01, z=0-0.01, a=0-0.02, b=0-0.02, c=0.005-0.02; the c / a axis ratio of the powder is ≥1.009, exhibiting a highly tetragonal perovskite structure. The powder prepared by this invention has a dielectric constant ≥12000 (1 kHz), dielectric loss <0.03 (1 kHz), breakdown voltage ≥100 kV / cm, sintering temperature ≤1250℃, and temperature characteristics that meet the EIA X9R standard. This invention introduces chitosan oligosaccharide as a dispersant and complexing agent based on the traditional solid-phase method, combining the advantages of the simplicity of the solid-phase method and the good uniformity of the liquid-phase method. The synthesis process is simple, the batch stability is high, and it can be applied on a large scale.

The present specification relates to a capacitor manufacturing method comprising the steps of: a) forming a stack comprising, in order from an upper surface of a substrate, a first conductive layer made of aluminum or an aluminum-based alloy, a first electrode, a first dielectric layer, and a second electrode; b) etching an upper portion of the stack by chemical plasma etching, said chemical plasma etching being interrupted before the upper surface of the first conductive layer; and c) etching a lower portion of the stack by physical plasma etching, said physical plasma etching being interrupted in the upper surface of the first conductive layer.

A multilayer capacitor includes: a body including a dielectric layer, and first and second internal electrodes stacked on each other in a thickness direction of the capacitor while being spaced apart from each other with the dielectric layer interposed therebetween; a first external electrode connected to the first internal electrode; and a second external electrode spaced apart from the first external electrode in a length direction of the capacitor that is perpendicular to the thickness direction, and connected to the second internal electrode. One of the first internal electrode and the second internal electrode has a horizontal plane perpendicular to the thickness direction and an inclined plane inclined with respect to the horizontal plane in at least a partial region thereof.

A ceramic body with an embedded capacitor. In some embodiments, a device includes: a ceramic body composed of a ceramic material; a first capacitor within the ceramic body; a first conductive trace; and a second conductive trace, the first capacitor including: one or more ceramic dielectric layers; two or more metallic electrodes; a first metallic terminal; and a second metallic terminal, the metallic electrodes alternating with the ceramic dielectric layers, the metallic electrodes begin connected alternately to: the first metallic terminal; and the second metallic terminal, the first metallic terminal being connected to the first conductive trace, the second metallic terminal being connected to the second conductive trace, the first capacitor having a volume of at most 10% of a volume of the ceramic body.