32results about How to "Overcome the thickness" patented technology

The invention discloses a transparent display screen, which comprises a transparent conductive material, a transparent base and a display unit, wherein the transparent conductive material is used for conducting a component in the transparent display screen; the transparent base is connected with the transparent conductive material to serve as a base material of the transparent display screen, and the display unit is connected with the transparent conductive material for displaying the content of the transparent display screen. The transparent display screen utilizes a low-cost transparent conductive film, and the conductive film is divided into a plurality of areas by an etching technology; a surface-mounting light emitting diode is fixed on the transparent conductive base through transparent crystalline solid rubber to form a light emitting diode matrix, and the transparent display is achieved by external circuit drive. The invention also discloses a manufacture method of the transparent display screen.

The invention relates to an OPGW icing thickness measuring method and a measuring device thereof. The method comprises the following steps: (1) monitoring icing condition of OPGW ground lines in a real-time manner; (2) when the thickness of the ice on the OPGW ground lines is beyond the alert thickness, de-icing alert information is sent out; (3) establishing a de-icing circuit according to the de-icing alert information; (4) carrying out de-icing operation according to the de-icing circuit; (5) monitoring and collecting de-icing temperature and progress of the OPGW ground lines; and (6) when the icing fall-off degree of the OPGW ground lines meets the requirements, de-icing operation is stopped. The technical proposal of the method and the device provided by the invention enables icing continuous measurement of the OPGW.

The invention relates to an ultra-silent treadmill belt and a manufacture method thereof. Fabrics are used as base materials, and a bottom coating and a surface coating are coated on the fabrics; the fabrics are formed by knitting through a 3 / 1 twill knitting method, the warp direction adopts a low-shrinkage terylene polyester multifilament, the weft direction adopts a low-shrinkage polyester monofilament, and a conducting thread is added in the warp direction of the fabrics, wherein the bottom coating is pasty polyvinyl chloride resin with the viscosity of 9,000-10,000CP. The manufacture method sequentially comprises the following steps of kitting the fabrics, pressurizing by a roller for heating, ironing and molding, coating the bottom coating on the fabrics, coating the surface coating on the fabrics, rolling patterns by rubber and finally welding joints. The invention has the characteristic of ultra-silence and overcomes the phenomena of small thickness, easy slipping and deflection when in use, and the like of the traditional treadmill belt; by the improvement of fabric materials and the knitting method, the transverse stabilizing force of the fabrics is ensured, the fabrics are more flat and abrasion-resistant, the safety of use is improved, and the service life is prolonged; and the invention has excellent static electricity preventing effect.

The invention relates to an aluminum alloy laptop shell, a forming mold, a milling fixture and a forming method. The aluminum alloy laptop shell comprises an external shell and an assembly structural part, the external shell is made of aluminum alloy, and the assembly structural part made of engineering plastics is arranged on the periphery in the external shell in an injection molding manner. An aluminum alloy material with good toughness and strength balance is used for forming the laptop shell, the external shell made of the aluminum alloy is combined with the PC (Polycarbonate) / ABS (acrylonitrile butadiene styrene) structural part arranged on the inner periphery of the external shell to form the laptop shell with the brand-new structure, and the shortcoming that a traditional laptop shell is too thick and too heavy and is easy to deform is overcome.

The invention relates to a processing method for wood working of furniture industry. A wooden article shading process sequentially comprises the following steps of: a, sanding primer; b, checking whether a spray gun has an air leakage phenomenon; c, adjusting the amount of a paint; d, controlling air velocity in a spray room; e, preparing before spraying; f, spraying base color; g, shading and polishing; and h, performing secondary shading according to the step g. According to the wooden article shading process, the main means of increasing air pressure of an air gun, spraying air pressure, air velocity in the spray room, spraying pressure and distance of a spray gunpoint is adopted; and a paint film on the surface of a wooden article is rich, smooth and attractive by adopting the secondary shading method.

The invention relates to an antinode core-board precast concrete prefabricated composite wall comprising an antinode core-board unit. The antinode core-board unit comprises an antinode core board, edge reinforcing columns and end boards; the board surface of the antinode core board is wavy; the edge reinforcing columns are fixedly arranged on two sides of the antinode core board, the length direction of the edge reinforcing columns is parallel to the direction of wave crests or wave troughs of the antinode core board, and the upper and lower ends of each edge reinforcing column are parallel to the upper and lower ends of the antinode core board; the end boards are respectively and fixedly arranged on the upper and lower sides of the antinode core board and the edge reinforcing columns; a reinforced concrete board covers the outer sides of the antinode core board and the edge reinforcing columns. The antinode core-board precast concrete prefabricated composite wall is high in field fabrication degree, fast in construction and high in industrialization and commercialization degree, and is more convenient to connect with steel beams and floor slabs. Advantages of various existing lateral force resistance members can be integrated in the composite wall, and the composite wall can bear vertical load as well as resist horizontal force and can play an important role in aseismic design of multi-story and super-high-rise building structure systems.

The invention discloses a preparation method of a silicon epitaxial wafer for a high-voltage power device. According to the method, a reaction cavity of the epitaxial equipment is purified and the content of impurities accumulated in the cavity is reduced by long-time purging of large-flow hydrogen before epitaxial growth; the nonlinear gradient heating is adopted, so that the stress accumulated in the heating stage is released in time, and the generation probability of defects is reduced; and the reaction rate is significantly improved by shortening the distance between a quartz bell jar anda base of the reaction cavity of the epitaxial equipment and adopting a large-flow trichlorosilane and hydrogen proportioning mode, and high-speed epitaxial growth is realized under the premise of ensuring good crystallization quality of the silicon epitaxial wafer. The problem of comprehensive control on thickness, resistivity and crystallization quality in the existing preparation process is overcome by adopting the method of sectional growth of the silicon epitaxial wafer layer. the prepared silicon epitaxial wafer has a bright surface, is free from dislocation, staggered layers, slip linesand fog defects, realizes the controllability of material indexes such as thickness, resistivity and defects and meets the use requirements of the high-voltage power device.

The invention provides a graphene heat conducting member and a preparation method thereof. The preparation method of the graphene heat conducting member provided by the invention comprises the following steps: a) coating the surface of a graphene oxide film with organic liquid to form an organic liquid film, and then covering the surface of the organic liquid film with a graphite oxide film; spraying the organic liquid and covering with the graphite oxide film repeatedly until a desired thickness to obtain a composite precursor; b) cold-pressing the composite precursor to obtain a pressed body; c) performing heat treatment on the pressed body under an inert gas or reducing gas condition to obtain a heat-treated member; d) performing graphitization treatment and cold-pressing treatment on the heat-treated member to obtain the graphene heat conducting member. By adopting the preparation method provided by the invention, graphene members with high thickness can be prepared, the preparation process is simple and feasible, and facilitates large-scale production, and at the same time, the obtained product has high quality and achieves relatively good heat conduction effect.

The embodiment of the invention provides an infrared touch module and a touch display device. The infrared touch module comprises an infrared emitting unit and a touch structure unit of a layered structure, wherein the infrared emitting unit and the touch structure unit are arranged oppositely, the infrared emitting unit is used for emitting infrared rays, and the touch structure unit is used fordetermining a touch position by changing the transmittance of the infrared rays in case of touch. By the adoption of the layered structure, the thickness of the infrared touch module is effectively lowered, thinning is realized, and the infrared touch module and a display panel can form an ON-Cell or IN-Cell structure. Due to the fact that the infrared touch module determines the touch position bychanging the transmittance of the infrared rays at the touch position, multipoint touch can be realized. The embodiment effectively overcomes the defects that an existing infrared touch screen has large thickness and cannot realize multipoint touch.

The invention discloses a preparation method of a multi-ceramic composite coating. The method comprises the following steps of 1, preparing oxide / silicon carbide / aluminum composite powder for thermalspraying, wherein oxides include one to four of a zirconium oxide, a titanium oxide, a hafnium oxide, a tantalum oxide, a niobium oxide, a vanadium oxide, a chromic oxide, a molybdenum oxide and a tungsten oxide; 2, performing pretreatment on the surface of a substrate material needing to be coated; 3, adopting a thermal spraying method for coating the surface of the substrate material with the oxide / silicon carbide / aluminum composite powder. Accordingly, the multi-ceramic composite coating is obtained through in-situ synthesis. The defects that in the prior art, the technology for preparing the multi-ceramic composite coating is complete, high in cost, large in contamination, low in deposition efficiency, poor in coating performance and not suitable for application in large-scale industrial production are overcome.

The invention provides a novel super capacitor diaphragm. The super capacitor diaphragm comprises a ceramic fiber and an enhancement material, and is characterized in that the ceramic fiber and the enhancement material are mixed, and a wet paper-making method is employed for manufacturing an ultrathin, compact, low-resistance and high-strength fiber diaphragm especially suitable for a super capacitor. The advantages are as follows: the super capacitor diaphragm is widely applied to an isolation material of a super capacitor electrode, can well reduce the internal resistance of the super capacitor and improves the work performance of the super capacitor.

The invention discloses a growth method for a buffering layer of an expanding wavelength near-infrared detector. The method comprises the following steps: adopting a metallic organic chemical vapor deposition process or a molecular beam epitaxy process for growing one of an In<x>Ga<1-x>As low temperature layer, an InAs<y>P<1-y> low temperature layer and an In<z>Al<1-z>As low temperature layer on an InP substrate at a first temperature; increasing the temperature of the InP substrate to a second temperature, and annealing the In<x>Ga<1-x>As low temperature layer, InAs<y>P<1-y> low temperature layer or In<z>Al<1-z>As low temperature layer; and growing one of an In<w>Ga<1-w>As component gradient layer, an InAs<w>P<1-w> component gradient layer and an In<w>Al<1-w>As component gradient layer at a third temperature, wherein the second temperature is higher than the first temperature and the third temperature is higher than the second temperature. According to the growth method, the thickness of the buffering layer can be reduced, the dislocation density can be reduced, and thus a detector with excellent high speed performance can be acquired.

The invention discloses a preparation method of a tungsten boride composite coating, and relates to coating of boride on metal materials. The tungsten boride composite coating is synthesized through a thermal spraying in-situ reaction. The preparation method comprises the steps that tungsten oxide / boron carbide / aluminum composite powder used for thermal spraying is prepared; the base material surface needing the coating is pretreated; and the tungsten boride composite coating is prepared. The defects that the existing technology for preparing the tungsten boride composite coating is complex, high in cost, large in pollution and low in deposition efficiency, and the coating is small in thickness, low in compactness, poor in uniformity, low in toughness, poor in binding force with a base body, likely to be cracked and not suitable for being applied in large-scale industrial production are overcome.

The invention relates to a packaging mold of a ternary catalytic converter and a packaging method thereof. The packaging mold comprises a cylindrical mold body; and the mold body consists of multiple mold pieces with the same size. The packaging mold is characterized in that the mold pieces are fan-shaped blocks and consist of two-groove mold pieces and three-groove mold pieces; the two-groove mold pieces and the three-groove mold pieces are pairwise arranged at intervals; the cross sections of the two-groove mold pieces and the three-groove mold pieces are fan-shaped, and the inner and outer surfaces thereof are respectively arc surfaces; three parallel groove bodies are respectively arranged at the two ends and the middles of the inner surfaces of the three-groove mold pieces; and two parallel groove bodies are respectively arranged at the two ends of the two-groove mold pieces. The packaging method comprises the following process steps: (1) the outer diameter of a carrier is measured; and a pad is weighed; (2) after the pad coats the carrier, the pad is pushed into the cylinder; (3) the diameter of the cylinder is shrunk; and (4) the two ends of the cylinder are shrunk. When the diameter of the cylinder is shrunk, a local avoiding method is adopted, so that the fitting gap of welding parts can be guaranteed, and the welding trajectory in welding lines is locked.

The invention provides an electrochemical water treatment device. The device includes a baffle plate, screws, water collecting and distributing grooves, a multi-stage channel electrode waterproof insulation pad, a multi-stage channel electrode terminal, a bearing plate, a device shell cover, a counter electrode terminal, a counter electrode, a device shell, a multi-stage channel electrode, a counter electrode waterproof insulation pad, a sealing gasket and communicating pipes; the multi-stage channel electrode has a micron channel parallel to the surface of the multi-stage channel electrode, and a nanochannel vertical to the surface of the multi-stage channel electrode, and a to-be-treated water pathway exists between two poles; the micron channel parallel to the surface of the multi-stagechannel electrode is an oxygen-containing gas pathway; and gas and liquid phases are in contact with each other to perform reaction through the nanochannel vertical to the surface of the multi-stagechannel electrode. The gas and liquid phases are reacted with each other in nano space at the internal of the multi-stage channel electrode, and the limitation of charge transmission and substance transmission can be broken through, so that water treatment efficiency can be significantly enhanced; and the device is simple in structure, low in cost, small in energy consumption and land occupation and long in service life, and used for various wastewater treatment.

The invention discloses a control method for acquiring a dielectric constant of a calibration material in real time, used for reflecting the real-time paving thickness and compaction degree of pitch;and determining a real-time reflection coefficient amplitude [Gamma]i of the calibration material and an air interface, and determining a relative dielectric constant [Xi][Gamma]i of the calibration material based on the real-time reflection coefficient amplitude [Gamma]i of the calibration material and an air interface; therefore, the lossless and nonstop real-time detection and calibration of the dielectric constant are achieved, and the defects and disadvantages that at present, vibration exists in the radar test and only initial dielectric constant is calibrated, and thus the material thickness, uniformity, compactness degree and damages cannot be truly reflected in real time are overcome, so as to further promote the commercial process of the ground penetrating radar. The control method provided by the invention is simple to use, convenient to operate, strong in function, strong in practicability, efficient and accurate, and has extremely high commercial value.

The invention discloses a partially-overlapped laminated plate with holes. The partially-overlapped laminated plate comprises a prefabricated plate, negative ribs and cast-in-place concrete. A middle completely prefabricated part is arranged at the middle portion of the prefabricated plate. A plurality of hollow holes vertically penetrating the middle completely prefabricated part are formed in the middle completely prefabricated part. The hollow holes are cylindrical, and parts needing to be overlapped are arranged on the periphery of the prefabricated plate and located on the outer side of the middle completely prefabricated part, and the overlapped parts are subjected to face roughening treatment. The left side and the right side or one side of a reinforced concrete overlapped beam is provided with the prefabricated plate. The prefabricated plate, the negative ribs and the reinforced concrete overlapped beam are fixedly connected through the cast-in-place concrete. The middle part of the prefabricated plate is completely prefabricated, the hollow holes are arranged, the structure stress is good, and the weight is small. The reserved hollow holes can conveniently serve as channels for a cable, a wire and a water pipe; the workload of the prefabricated part is increased, the construction work of the field casting-in-place part is reduced, and industrialization and construction quality control are facilitated.

The invention provides 3D composite nuclear protection fabric. A lithium borate compound with a neutron absorption function is packed in a hollow position of an outer fabric layer, a barium compound with an X-ray protection function is packed in a hollow position of a middle fabric layer, and the hollow position of an innermost layer is filled with zinc oxide / graphene to further absorb secondary rays such as ultraviolet rays, so that the 3D flexible composite nuclear protection fabric is obtained. The fabric can meet different demands by regulating the size, shape, layer number of hollow pipelines in the 3D fabric, the filling amount and other design; besides, the fabric also has neutron protection, secondary X ray and ultraviolet comprehensive protection effects, protection powder is located in the hollow pipelines, and the problems of low coating thickness, poor adhesion fastness, poor washability, secondary ray protection of traditional surface coating methods are solved. The fabriccan be applied to light functional clothing to prevent nuclear radiation and secondary high energy ray injury.

The invention discloses an electrolyte solution capable of improving high temperature cycling and storing performances of a lithium secondary battery. The electrolyte solution is prepared by lithium salt, an organic solvent and an addition agent, wherein the electrolyte solution also comprises a high temperature film-forming agent; the high temperature film-forming agent is one or any combinations of delta-valerolactone, gamma-valerolactone, gamma-caprolactone and epsilon-caprolactone; and the mass percentage of the high temperature film-forming agent accounts for 0.5%-15% of the total amount of the electrolyte solution. The high temperature film-forming agent is added into the electrolyte solution of the lithium secondary battery, a passivating film with excellent stability can be formed on the surface of a lithium secondary battery positive pole, a contact interface of the positive pole and the electrolyte solution can be improved, the decomposition reaction of the electrolyte solution on the positive pole material in the high temperature is inhibited, and the disadvantages that the existing lithium secondary battery is quick in storage capacity loss, low in recovery rate and quick in battery thickness swelling when being used under high temperature environments are overcome, so that the high temperature cycling and storing performances are improved.

The invention relates to the field of quantum dot diaphragms, and particularly to quantum dot loaded conjugated microporous polymers and a preparation method thereof, a quantum dot diaphragm and a liquid crystal display module, aiming to solve the problem that quantum dots are easy to reunite. Quantum dots are adsorbed to surfaces of conjugated microporous polymers. The quantum dot loaded conjugated microporous polymers have good compatibility with organic polymer glue system, solves the problem about reuniting of quantum dots, and reduces usage of quantum dots. The quantum dot diaphragm has excellent optical performance. The preparation method of the quantum dot loaded conjugated microporous polymers is simple, high in controllability and low in cost, and can be used for fast realizationof large-scale production and customized fining application.

The invention discloses a high-transparency PC product and a preparation method thereof. The high-transparency PC product is characterized by comprising the following raw materials in parts by weight:40-60 parts of a resin base material, 6-12 parts of polymethyl methacrylate, 4-8 parts of polycarbonate diol, 5-8 parts of an antioxidant, 8-15 parts of nano silicon dioxide, 5-8 parts of a transparent toughening agent and 0.5-2 part of a compatilizer. The high-transparency PC product provided by the invention overcomes the defects of no scratch resistance, low transparency and non-uniform thickness, solves the two problems at the same time, has excellent properties of high hardness and high toughness, and also has good surface gloss and good UV aging resistance.

The invention discloses a preparation method of lithium ion battery negative electrode material hollow porous vanadium pentoxide microspheres. A solvothermal and oxidation treatment two-step method is adopted for synthesis, a mixed solution of n-propyl alcohol and ethylene glycol serves as a solvent, vanadyl citrate serves as a solute, a hollow porous VO organic ligand precursor is prepared through a solvothermal method, then the precursor is subjected to low-temperature oxidation heat treatment, and the hollow porous V2O5 microspheres can be synthesized. The three-dimensional structure V2O5 is a secondary hollow porous microsphere formed by disorderly stacking primary nanosheets of 10-20 nm, the diameter of the three-dimensional structure V2O5 is about 1 [mu]m, the shell thickness is about 0.3 [mu]m, the pore diameter is 10-20 nm, and the three-dimensional structure V2O5 has a high specific surface area of about 45-50 m<2> / g. When the lithium ion battery negative electrode material hollow porous V2O5 microspheres are used as a negative electrode of a lithium ion battery, the porous V2O5 nanosheets increase the contact area of an electrolyte and effectively shortens the diffusion transmission path of ions; and meanwhile, the hollow structure provides a buffer space for volume change, so that the hollow porous V2O5 microspheres show relatively good rate capability and cycling stability, and the preparation method of the three-dimensional hollow porous V2O5 microspheres is expanded.

The invention provides a method for preparing a hard magnetic oxide coating on a metal base material and relates to a method for manufacturing a device applying electromagnetic or similar electromagnetic effect. The method comprises the following steps: preparing raw material MeFe12O19 type ferrite powder particles for plasma spraying by a spraying granulation method; spraying the powder particles on the pretreated metal base material by a plasma spraying technology, wherein the thickness of the hard magnetic oxide coating is 10 microns to 1 mm; performing annealing heat treatment on a workpiece of the metal base material coated with the MeFe12O19 hard magnetic oxide coating at the temperature of 800 to 1,200 DEG C for 1 hour; and performing fine grinding on the hard magnetic oxide coating to obtain the work piece of the metal base material coated with the MeFe12O19 hard magnetic oxide coating. By the method, the defects that the thickness and the magnetism of the magnetic thick film prepared on the metal base material cannot meet the requirements of micro-electronic machinery on miniature permanent magnet material devices in the prior art are overcome.

The invention provides a radiation refrigeration surface based on a fiber array and a preparation method and application of the radiation refrigeration surface. The radiation refrigeration surface based on the fiber array comprises a bottom adhesive layer and a top fiber array structure. And the bottom adhesive layer is prepared from the following raw materials: a polymer matrix, inorganic filler particles and a curing agent. The radiation refrigeration surface based on the fiber array provided by the invention has a series of advantages of high sunlight reflectivity, high mid-infrared emissivity, strong adhesive force with a substrate and the like, and has excellent radiation refrigeration performance. The radiation refrigeration surface based on the fiber array can be used for building outer walls, thermal control mechanisms and the like to adjust the internal temperature of the building outer walls, the thermal control mechanisms and the like. In addition, the radiation refrigeration surface based on the fiber array is simple in preparation process, low in cost and suitable for large-area production and preparation.

The invention provides a constantan-oxygen-free copper composite tuning material and a preparation method thereof. The constantan-oxygen-free copper composite tuning material comprises a constantan alloy layer as well as an upper oxygen-free copper layer and a lower oxygen-free copper layer, wherein the thickness of the constantan alloy layer is 0.03mm-0.13mm; the upper oxygen-free copper layer and the lower oxygen-free copper layer are respectively connected with the upper surface and the lower surface of the constantan alloy layer through a metallic bond, and the thicknesses of the upper oxygen-free copper layer and the lower oxygen-free copper layer are 0.025mm-0.066mm. The constantan-oxygen-free copper composite tuning material and the preparation method provided by invention have the advantages that the upper and lower oxygen-free copper layers and the middle constantan alloy layer are combined together through the metallic bond, the constantan-oxygen-free copper composite tuning material has the unique advantage of the tight combination of the molecules, and the defects in the prior art that the connection of a tuning film layer is not firm, and the thickness of a coating layer is hard to accurately control are overcome.

The invention discloses a high-frequency high-Q-value FeSiAl@MnZn ferrite soft magnetic composite magnetic powder core and a preparation method thereof. The preparation method mainly comprises the steps of powder size screening, MnZn ferrite shell layer coating through a chemical coprecipitation method, composite magnetic powder pre-sintering, compression molding, annealing and the like. According to the method, flattening and phosphating treatment is not carried out on FeSiAl powder, the experimental process is simplified, environmental pollution is reduced, a better coating effect can be achieved, electric contact among metal magnetic powder particles is effectively isolated, the magnetic conductivity and the quality factor of the composite magnetic powder core are improved, and the application frequency range of the FeSiAl magnetic powder core is widened. The method is simple in implementation process, short in reaction time and easy for large-scale production and industrial application.

The invention relates to an acoustic liner, a manufacturing method, a power propulsion system and a honeycomb core. Wherein the acoustic liner comprises a perforated plate; the honeycomb core which comprises a plurality of honeycomb units which are separated from one another; and a back plate; the perforated plate is located at the top, the back plate is located at the bottom, and the honeycomb core is arranged between the perforated plate and the back plate to form a plurality of mutually separated resonant cavities with open tops and closed bottoms; each honeycomb unit comprises a plurality of honeycomb bodies distributed in the direction from the center to the periphery, each honeycomb body comprises a plurality of wall faces, and the bottoms of the wall faces are connected with the back plate and surround the center of the honeycomb unit in the circumferential direction; in two adjacent honeycomb bodies, the honeycomb body closer to the periphery surrounds the honeycomb body closer to the center; and at least two honeycomb bodies in the plurality of honeycomb bodies are different in height.

The invention discloses a method for induced growth of DAST and a derivative single-crystal film thereof by using a self-assembly monomolecular film. The method comprises the following steps: performing self-assembly of a layer of monomolecular film containing one or more functional groups of -SO3-, -OH, -Cl-, -NH2-, -F- and -COOH on the surface of a substrate to realize functionalization of the substrate; clinging two functionalized substrates in parallel and inserting to DAST or DAST derivative solution; and growing DAST or DAST derivative single crystal between the two substrates by adopting a slow solvent evaporation process. The method disclosed by the invention can effectively overcome the problems such as poor thickness and orientation controllability of crystal, easy formation of twin crystal and water vapor interference with crystal growth in the growth process of organic film single crystal, and can effectively control the thickness and growth direction of the DAST or DAST derivative crystal to avoid twin crystal.

The invention provides a method for preparing a large-size high-temperature superconducting film. The method comprises the following steps: preparing a reaction solution: dissolving polyvinylpyrrolidone in a propionic acid solution, stirring until the polyvinylpyrrolidone is completely dissolved in the propionic acid solution to form a uniform and transparent mixed solution, and adding bismuth acetate, strontium acetate, calcium acetate and cupric acetate into the mixed solution one by one to obtain a precursor sol; preparing a precursor film by a dip-coating method: sequentially putting SrTiO3, MgO or LaAlO3 substrates into deionized water, alcohol and an acetone solution, cleaning in an ultrasonic cleaning machine, spin-coating the precursor sol on the SrTiO3, MgO or LaAlO3 substrate for pulling, placing the substrate on a flat plate heater to obtain a precursor film, and controlling the content of polyvinylpyrrolidone to change the sol viscosity and the dipping frequency so as to change the thickness of the film; and preparing a high-temperature film extending towards the same direction: heating and preserving heat of the precursor film, and cooling to room temperature along with a furnace to obtain the high-temperature superconducting film extending towards the same direction with phase purity.

The invention relates to the technical field of micro electro mechanical systems and semiconductors, in particular to a filter structure and a preparation method thereof. The preparation method of thefilter comprises the following steps: forming a substrate; arranging a bulk acoustic wave resonator on the substrate; forming an electric connection layer on the piezoelectric layer of the bulk acoustic wave resonator; forming a sealing layer on the electric connection layer; forming a cap layer on the sealing layer; and forming a protective layer on the cap layer, and forming a metal connectingline through hole in the protective layer on the outer side of the sealing layer. According to the preparation method of the filter, the existing technological process can be simplified, and the preparation time is shortened, and the production cost is reduced, and the filter prepared by the preparation method is small in thickness and light in weight.