111results about How to "Performance impact" patented technology

The invention discloses a photovoltaic power generation panel performance evaluation method and system, and the method comprises the steps: obtaining the performance detection data of a photovoltaic power generation panel in all aspects, screening the performance detection data, and determining the prominent performance detection data in the performance detection data; analyzing the prominent performance detection data, and determining candidate performance parameters highly related to the performance of the photovoltaic power generation panel; evaluating the candidate performance parameters to obtain evaluation values of the candidate performance parameters, and determining key index parameters influencing the performance of the photovoltaic power generation panel according to the evaluation values; and performing evaluation calculation on the performance of the photovoltaic power generation panel based on the key index parameters influencing the performance of the photovoltaic power generation panel to obtain a performance evaluation value of the photovoltaic power generation panel. According to the method, performance data of various aspects of the photovoltaic power generation panel are screened and analyzed, performance parameters are determined, and comprehensive evaluation of the performance of the photovoltaic power generation panel can be realized, so that the working state of the photovoltaic power generation panel is better known, and a scientific basis is provided for design and optimization of the photovoltaic power generation panel.

The utility model provides a laser coding device which comprises a laser module and a water-cooling control box, a water-cooling pipeline is arranged in the laser module, heat generated in the laser module is absorbed through cooling liquid in the water-cooling pipeline and is brought back to a water storage tank of the water-cooling control box, and then the laser module is coded through the effect of a refrigeration mechanism. The cooling liquid is cooled, and the cooled cooling liquid flows back to the water cooling pipeline through the second water outlet and the first water inlet and continues to absorb heat generated in the laser module, so that the effect of circularly cooling the interior of the laser module is achieved, and the cooling efficiency can be effectively improved; and the influence on the performance, the service life and the use safety of the laser coding equipment due to over-high temperature is avoided. Compared with an existing laser code printing device, the laser code printing device is compact in structure, good in heat dissipation performance and high in code printing stability and consistency.

The invention discloses a quartz fiber with an yttrium oxide coating and a preparation method of the quartz fiber, and belongs to the field of preparation of wave-transparent ceramics. Aiming at the problem that the performance of the existing quartz fiber is reduced at a high temperature, the invention provides the preparation method of the quartz fiber with the yttrium oxide coating, which comprises the following steps: impregnating the quartz fiber by using yttrium oxide sol, and drying and sintering the impregnated quartz fiber to obtain the quartz fiber coated with the yttrium oxide coating on the surface; the preparation process of the yttrium oxide sol comprises the following steps: sequentially adding a coordination agent and a stabilizer into a yttrium nitrate solution, stirring and dissolving to form a mixed solution, adding a pH regulator to adjust the pH value of the mixed solution to 7-8, heating to a target temperature, and cooling to obtain the yttrium oxide sol. The yttrium oxide coating covers the surface of the quartz fiber, so that the high-temperature sintering resistance of the quartz fiber can be greatly improved; the preparation process of the yttrium oxide sol is simple in technology and low in cost, the prepared yttrium oxide sol is good in stability and can be better attached to the surface of the quartz fiber, and the dipping effect is improved.

The invention discloses a man-machine instruction automatic generation external control system and method based on physical isolation perception. The system comprises an external execution body, a display sensing module, an artificial intelligence decision module and an input execution module. The local independent proxy device operates independently of the controlled system, acquires a screen display signal of the controlled system in one direction through an external display acquisition link, generates a control instruction based on acquired interface information, acts on the controlled system through a standard man-machine input interface, and constructs a closed-loop verification mechanism taking the screen display signal as a judgment basis. The information acquisition constraint, the judgment constraint and the execution authenticity constraint are followed, and verifiable confirmation of a control instruction execution result is realized. The system supports multi-mode triggering and external physical equipment extension control, solves the problems of insufficient safety, limited compatibility and poor verification reliability in the prior art, and is suitable for application scenes with high safety requirements.

The utility model belongs to the field of circulating fluidized bed boilers, and particularly relates to a boiler longitude and latitude anti-abrasion device which is assembled on a boiler body, a hearth is arranged in the boiler body, a plurality of drainage blocks are continuously and fixedly assembled on the inner wall of the hearth, and each drainage block is provided with an inclined downward face and an inclined upward face. According to the warp and weft anti-abrasion device of the boiler, through cooperation of the drainage blocks and the anti-abrasion pieces, the problems that large particles of different height parts of an existing hearth fall down along the side wall of the hearth, internal circulation of materials is formed, and the heat dissipation efficiency is improved are solved. And the materials falling close to the wall form shearing collision on the water cooling wall tube of the boiler, so that the water cooling wall tube is seriously abraded, and a heating surface frequently leaks, so that a unit stops running.

This invention provides a fast frequency closed-loop control method and system for an alkali metal atomic magnetometer laser, comprising: setting the laser current and laser temperature, calculating and obtaining the laser frequency closed-loop control signal SigX; and controlling the laser frequency based on the offset value of the frequency closed-loop control signal SigX and the correlation function f(I) = φ(I, SigX) between the current value and SigX. X The process involves calculating and obtaining the current adjustment value ΔI0, which is then directly applied to the laser current. The difference between the current adjustment value I1 and the set value I0 is calculated as ΔI1. Based on the correlation function f = φ(f(I), f(T)), the temperature change ΔT1 corresponding to the current change ΔI1 is calculated. This temperature adjustment ΔT1 is then applied to the laser temperature. By adjusting the laser temperature to T1, the laser current value is changed back from the adjustment value I1 to the initial set value I0. This invention addresses the problem in existing technologies where using laser current as a feedback signal for closed-loop control of laser frequency easily affects the laser's performance and consequently its lifespan.

This invention discloses a deep trench isolation structure for a CIS (CMOS Image Sensor), comprising: a deep trench formed by plasma etching of a first surface of a first semiconductor substrate, wherein the inner surface of the deep trench has interface defects generated by plasma etching; a first semiconductor epitaxial layer, a second dielectric layer, and a third conductive material layer formed in the deep trench; and a fourth conductive material layer formed in a portion of the deep trench closest to the peripheral region; the fourth conductive material layer being connected to an external electrode; the external electrode being connected to an external control module, which provides an external voltage to each of the third conductive material layers to modulate the interface states of the inner surface of the deep trench, thereby eliminating the adverse effects of interface defects on the interface states. This invention also discloses a method for manufacturing the deep trench isolation structure for a CIS. This invention can modulate the interface states at the interface between the deep trench isolation structure and the semiconductor substrate, optimizing the interface states and thereby reducing dark current and white pixels.

The invention discloses a spring stretching correction device and correction method, and belongs to the technical field of spring correction. A spring stretching correction device comprises a working box with a cavity, the interior of the cavity of the working box is divided into a containing cavity, a working cavity and a cleaning cavity from top to bottom through partition plates, the spring stretching correction device further comprises a fixed traction hook fixedly connected to the side wall of the working cavity, and series circuit mechanisms are arranged on a movable traction hook and the fixed traction hook respectively. The knocking end of the reciprocating knocking mechanism is arranged below the traction end of the traction hook, and the reciprocating knocking mechanism is matched with the air injection plate; according to the invention, springs at two ends can be self-heated, the phenomenon of thermal stress concentration of the springs can be reduced, and local overheating or cooling of the springs can be prevented, so that cracks are prevented from being generated outside the springs, the subsequent service life of the springs is prolonged, ferric oxide formed on the surfaces of the springs can be removed, and good electric contact and heat conduction are ensured; the influence of oxides on spring performance is reduced, and the subsequent service life of the spring is prolonged.

This disclosure relates to the field of polymer emulsions, specifically to a method for preparing a peelable emulsion. The method includes: reacting glycidyl methacrylate, amino-terminated silicone oil, and sodium flakes at room temperature with stirring in the dark, and filtering to obtain double-bond modified silicone oil; separating a vinyl monomer into a first monomer and a second monomer, and dispersing the double-bond modified silicone oil in the first monomer to obtain a third monomer; preparing a pre-emulsion by ultrasonic emulsification of the second monomer, an emulsifier, and water; adding the pre-emulsion, an aqueous solution of the crosslinking monomer, and an aqueous solution of the first ammonium persulfate to a reaction vessel to form a core-phase emulsion; adding the third monomer and the aqueous solution of the second ammonium persulfate dropwise into the core-phase emulsion to form a core-shell emulsion; naturally cooling the core-shell emulsion, adjusting the pH to 7-8 with ammonia, and filtering to obtain a peelable emulsion. The method for preparing a peelable emulsion provided in this disclosure aims to overcome problems such as weakened peelable coating performance caused by excessive use of release agents.

The present application relates to the field of lithium battery technology, and discloses an electrode assembly and an electrochemical device and an electronic device containing the same. The electrode assembly includes an anode electrode piece, a cathode electrode piece and a separator. The cathode electrode piece includes a cathode current collector and a first cathode covering layer arranged in a straight area of ​​the cathode current collector and a second cathode covering layer in a corner area. The conductivity of the second cathode covering layer is lower than the conductivity of the first cathode covering layer; or, the porosity of the corner area of ​​the separator is smaller than the porosity of its straight area. The electrode assembly of the embodiment of the present application improves the situation of lithium precipitation in the corner by optimizing the corner area of ​​the separator and / or the corner area of ​​the cathode electrode piece. Moreover, the present application only optimizes the corners, which will not have a significant impact on the overall performance of the battery cell.

The invention discloses a straightening device for aluminum profile production, comprising a workbench, a fixing plate 1 is fixedly installed on the top of the workbench, a straightening component is fixedly installed on the top of the workbench, the straightening component comprises a fixing frame 1 and a cylinder, the fixing frame 1 is fixedly installed on the top of the workbench, the cylinder is fixedly installed on one side of the fixing frame 1, a clamping plate is fixedly connected to the output end of the cylinder, tooth plates are fixedly installed on both sides of the clamping plate, and a supporting frame is fixedly installed on the top of the workbench. The invention relates to the technical field of aluminum profile production; the straightening device for aluminum profile production can straighten the aluminum profile by means of the straightening component, and the straightening is simple and convenient, the quality of the aluminum profile after straightening will be better, and the aluminum profile will not be loosened during the straightening process, thereby ensuring the straightening effect, and the aluminum profile can be put into subsequent production and processing or practical application in a more perfect form.

This invention discloses a novel method for the on-orbit use of a green monocomponent propulsion system, including a method for temperature control of the propulsion system after it enters orbit with the entire satellite, a method for preheating the catalyst bed of the monocomponent thrust chamber before the first start-up, a method for removing functional materials from the monocomponent thrust chamber during the first start-up of the monocomponent thrust chamber, a method for starting the monocomponent thrust chamber during the attitude and orbit control of the propulsion system, and a method for temperature control of the propulsion system during standby. By formulating the above methods, the influence of functional materials on the performance of the monocomponent thrust chamber is effectively eliminated, and the problem of on-orbit use of the novel green monocomponent propulsion system is solved. It has been successfully applied on micro and nano satellites.

The application provides a display panel and a display device. The display panel comprises: a substrate having a display area and a non-display area, the non-display area comprising a binding area located away from the display area; a protective adhesive layer arranged in the non-display area and covering at least the binding area; a polarizer located at least in the display area and extending at least to the edge of the protective adhesive layer; a first barrier structure arranged in the non-display area and located between the protective adhesive layer and the polarizer; and the polarizer covering at least part of the first barrier structure. The display panel can avoid forming a water vapor invasion path at the edge of the polarizer, effectively prevent water vapor penetration, and significantly improve the reliability and service life of the display panel.

The utility model discloses a medical supply packaging structure can reduce the oxygen and moisture content in the packing, including packing box, scavenger and sealed bag, the scavenger is built -in in packing box, and the sealed bag is set up in packing box outside and seals packing box. Packing box includes bottom shell and top cover, and the side edge of bottom shell is swingingly linked with the side edge of top cover, and bottom shell is equipped with at least one and is used for accommodating medical supply's accommodation cavity and at least one storage groove, and the edge of bottom shell is equipped with a plurality of first positioning piece, and the edge of top cover is equipped with a plurality of with first positioning piece one -to -one corresponding second positioning piece, and second positioning piece and first positioning piece interference fit make top cover with bottom shell cover, and in packing box cover state, the accommodation cavity and storage groove between have the breathable passage of intercommunication. Scavenger includes dehumidifier and oxygen scavenger, and dehumidifier and oxygen scavenger are contained in same storage groove or are contained in different storage groove respectively, for through the breathable passage and remove the moisture and oxygen in accommodation cavity.

The present invention belongs to the technical field of air turbine rocket engines, and discloses a mixed flow structure, working method and engine of an air turbine rocket engine, wherein one end of a first swirl plate is connected to one side of the outlet end of a corresponding inner channel, and the other end is located obliquely in front of the outlet end of the corresponding inner channel; one end of a second swirl plate is connected to the other side of the outlet end of the corresponding inner channel, and the other end is located obliquely in front of the outlet end of the corresponding inner channel; an arc connecting plate is connected to the top of the outlet end of the corresponding inner channel, the upper ends of the first swirl plate and the second swirl plate; the first swirl plate, the second swirl plate and the arc connecting plate form a gas swirl channel, and an air swirl channel is formed between the first swirl plate and the second swirl plate of two adjacent mixed flow reinforcement lobes. The purpose of the present invention is to shorten the mixing distance required by the lobe mixer to reduce the size of the air turbine rocket engine, while taking into account the mixing uniformity of high-temperature gas and cold air.

The invention discloses multi-adsorption-site nitrogen-doped porous carbon, a preparation method and application in iodine adsorption, and the preparation method comprises the following steps: carrying out primary calcination on a zeolite imidazate framework material, mixing with potassium hydroxide, and then carrying out secondary calcination to obtain the multi-adsorption-site nitrogen-doped porous carbon. According to the invention, a zeolite imidazate framework material is used as a precursor, potassium hydroxide is introduced for high-temperature calcination activation treatment, the obtained product inherits a rhombic dodecahedron framework of ZIF-8, a continuous through pore system and a nitrogen-doped carbon material with high pyrrole nitrogen content are formed, and the static adsorption capacity of the nitrogen-doped carbon material to iodine can reach 7.99 g / g.

The application provides a semiconductor device and a manufacturing method thereof. The semiconductor device comprises: a substrate, the substrate comprising an active region; an isolation layer, formed in the substrate of the active region; a gate layer, formed on the substrate of the active region, the gate layer comprising a main gate and an extension gate, the main gate being disconnected with the extension gate, and the projections of the main gate and the extension gate on the substrate being connected through the isolation layer. The application can eliminate the influence of the parasitic capacitance on the performance of the semiconductor device while keeping the original function of the gate layer.

The application discloses a flow visualization monitoring method in a cloud environment, and the method comprises the following steps: obtaining full flow in the cloud environment and time stamps of the flow by mirroring all virtual instance flows in the cloud environment; removing the full flow; classifying the removed full flow according to classification rules; determining the topological relationship of each classified flow by using a visualization algorithm on the five-tuple information and the time stamps of the classified full flow; storing the five-tuple information, the time stamps, the topological relationship of the classified full flow and the corresponding visualization parameters of each classification in a pre-set storage structure; and visualizing the classified full flow according to the topological relationship of each classified flow and the corresponding visualization parameters of each classified flow. The application also discloses a flow visualization monitoring device in a cloud environment. The application can realize the visualization monitoring of the flow in the cloud environment.

The utility model discloses a sealing and ironing device for a fireproof pad, and relates to the technical field of sealing and ironing of fireproof pads, the sealing and ironing device comprises a sealing and ironing mechanism and a driving mechanism, the sealing and ironing mechanism is arranged at the top of the driving mechanism, and the sealing and ironing mechanism comprises two transverse ironing assemblies; each transverse ironing assembly comprises a first heating plate, a heating junction box, a first sealing ironing knife, two mounting parts, two first connecting parts, three first positioning rods and four third shock absorbers, the two mounting parts are vertically distributed on the same horizontal plane, and the lower mounting part is detachably connected to the two first connecting parts. The sealing and ironing mechanism is arranged to conduct sealing and ironing assembly on the combined fireproof pad, the adverse effect on the performance of the fireproof pad through glue is avoided, the performance of the fireproof pad is more stable, the produced finished product is more stable through mechanical sealing and ironing, meanwhile, the driving mechanism is matched to form vertical reciprocating motion of the sealing and ironing mechanism, continuity of sealing and ironing production is achieved, and the production efficiency is improved. The working efficiency is improved.

The invention provides a preparation method of a solar cell and the solar cell, and relates to the technical field of photovoltaics. The method comprises the steps that a P-type silicon wafer is provided, a tunneling oxide layer and a polycrystalline silicon layer are sequentially formed on one side of the P-type silicon wafer in a stacked mode, phosphorus diffusion doping is conducted on the polycrystalline silicon layer to form a phosphorus-doped polycrystalline silicon layer, and a phosphorosilicate glass layer is generated; the surface of the phosphorosilicate glass layer is locally coated with an acidic etching coating, and the acidic etching coating etches off the local phosphorosilicate glass layer below the acidic etching coating, so that the phosphorus-doped polycrystalline silicon layer is partially exposed; carrying out wet etching by taking the residual phosphorosilicate glass layer as a mask so as to remove the exposed phosphorus-doped polycrystalline silicon layer and the tunneling oxide layer below the phosphorus-doped polycrystalline silicon layer; a solution used by the wet etching is an alkaline solution. The time for coating the acidic etching coating is short, and the productivity can be improved; the acidic etching coating is easy to clean, does not damage the silicon wafer, and is low in cost. And performing wet etching to form a P region, and forming an N region by taking the residual phosphorosilicate glass layer as a mask.

The invention belongs to the technical field of oil and gas field development reservoir transformation, and discloses a tracer agent for multilayer fracturing flowback monitoring, a preparation method and application, according to the preparation method, the effectiveness of the tracer agent is evaluated through an experimental means, and it is guaranteed that the effective tracer agent can be used for monitoring a flowback curve of fracturing fluid flowback volume along with time; according to the application method, a tracer agent is used for marking fracturing fluid, and the initial fracturing fluid dosage and the initial tracer agent dosage are recorded; after flowback is started, accumulated flowback volume is recorded at a fixed time interval, the real-time concentration of the tracer agent is measured, and the flowback volume of each section is calculated; according to the return volume of each section and the accumulated return volume of each section, the return curve and the accumulated return rate of each section are calculated, the liquid production contribution rate and the production sequence of each layer section can be accurately obtained, and the liquid production capacity can be calculated in a semi-quantitative mode. Through flow-back liquid sample detection and data analysis, the liquid drainage sequence, the flow-back contribution rate and the like of each layer section can be determined, and data support is provided for subsequent construction.

The invention discloses an off-the-road tire tread with a three-dimensional sipe pattern structure, which comprises a central pattern block I and a central pattern block II which are alternately arranged in the circumferential direction, and shoulder pattern blocks are respectively arranged on two sides of the central pattern block I and the central pattern block II; the first central pattern block is separated from the two adjacent second central pattern blocks through a first transverse three-dimensional sipe groove and a second transverse three-dimensional sipe groove respectively, the first central pattern block and the second central pattern block are separated from the shoulder pattern blocks through longitudinal sipe grooves, and the adjacent shoulder pattern blocks are separated through main pattern grooves. The transverse three-dimensional sipe pattern grooves I, the transverse three-dimensional sipe pattern grooves II, the longitudinal sipe pattern grooves and the main pattern grooves are communicated with one another; and the groove walls of the transverse three-dimensional sipe grooves I and the transverse three-dimensional sipe grooves II are zigzag. The overall saturation degree of the tread pattern is 75-85%, the tread rigidity is high, and the tire has good puncture resistance and abrasion volume and is suitable for scenes with severe working conditions.

The application provides a thermosetting viologen electrochromic solution and an electrochromic device. The thermosetting viologen electrochromic solution comprises the following components at the following concentrations: 1.5-4.5 g / mL of a diepoxy functional group molecule, 0.5-0.8 g / mL of an anhydride curing agent, 0.1-0.4 g / mL of a viologen compound, and 0.05-0.3 g / mL of a counter electrode material; the diepoxy functional group molecule is at least one selected from bisphenol f diglycidyl ether, bisphenol a diglycidyl ether and bisphenol s diglycidyl ether. The electrochromic device comprises a solid electrochromic layer formed by curing the thermosetting electrochromic solution. The application optimizes the formula, so that the electrochromic solution can achieve thermal curing while ensuring good electrochromic performance, solves the problems of easy leakage and poor safety of the viologen electrochromic device, and can be thermally cured and formed, avoiding the potential adverse effects of the ultraviolet curing method on the performance of the device.

The invention belongs to the field of electronic screen protection materials, and particularly relates to an electronic screen buffer film and a preparation method thereof. The electronic screen buffer film is prepared from the following components in parts by mass: 12 to 24 parts of methyl MQ resin, 64.5 to 76.5 parts of a siloxane polymer, 0.7 to 1 part of a catalyst, 0.1 to 0.5 part of an inhibitor, 1.8 to 3 parts of a first tackifier, 0.3 to 1.5 parts of an antistatic agent and 3.6 to 6 parts of a second tackifier, the first tackifier is one or more of epoxy siloxane, acryloyloxy siloxane or methacryloyloxy alkane; the second tackifier is one or more of epoxy siloxane, acryloyloxy siloxane and methacryloyloxy alkane; the second tackifier is one or more of rosin resin, petroleum resin or terpene resin. The tackifier is added into the silica gel buffer material, the reaction crosslinking degree is adjusted, the problem that a conventional adhesive tape or a gel product is insufficient in viscosity is solved, and the mechanical performance of the screen protection film is enhanced.

The utility model relates to wire twisting mould technical field, concretely relates to high -precision very thin tungsten wire cable wire twisting mould structure, including support seat, the top fixed mounting of support seat has the water storage tank, the outside fixed mounting of water storage tank has the cooling mechanism, the top fixed mounting of water storage tank has the cooling plate, the inside installation of cooling plate has multiple groups installation mould cover, the inside fixed connection of multiple groups installation mould cover all has tungsten steel inner mould, the cooling mechanism includes the cooling box fixed mounting in the outside of water storage tank, the back of cooling box is linked with the inside of water storage tank, the inside fixed connection of cooling box has multiple groups radiating fins, the utility model discloses through optimizing the wear resistance, thermal stability and low friction design of tungsten steel inner mould, combines high -efficient circulating cooling system, has realized high -precision very thin tungsten wire cable's high -efficient, low loss, high -precision wire production, has improved product pass rate significantly and has prolonged the mould life.

The application relates to an InAs / AlSb heterojunction type radio frequency field effect transistor device and a preparation method thereof. The device comprises a GaAs substrate, an AlGaSb buffer layer, a p-type GaSb interlayer, a lower barrier layer, an InAs channel layer, an upper barrier layer, an InAlAs hole blocking layer, an InAs cap layer, a source electrode, a drain electrode and a gate electrode. The GaAs substrate, the AlGaSb buffer layer, the p-type GaSb interlayer, the lower barrier layer, the InAs channel layer, the upper barrier layer and the InAlAs hole blocking layer are stacked in sequence. The source electrode and the drain electrode are both located on the InAs cap layer and are spaced apart by a certain distance. The InAs cap layer is provided with a gate slot, the gate slot is located between the source electrode and the drain electrode and on the InAlAs hole blocking layer, and the gate electrode is located in the gate slot. In the radio frequency field effect transistor device, the p-type GaSb interlayer is inserted between the AlGaSb buffer layer and the lower barrier layer, the p-type GaSb interlayer can eliminate some holes caused by the collision ionization effect, inhibit the movement of the holes in the direction of the substrate, thereby improving the direct current characteristics of the device and improving the performance of the device.

The application discloses a repairing method for a bulk SiC f / SiC ceramic matrix composite component, which mainly comprises the steps of machining pretreatment, fiber preform repairing, fiber line reinforcing and CVI deposition repairing. In the machining pretreatment step, the damaged material is cut into dovetail type protrusions, and the thickness of the part is slightly reduced to leave space for fiber line winding. In the fiber preform repairing step, ceramic fibers are woven into a preform with the same thickness as the dovetail type protrusions in the form of 2.5D, an internal groove matched with the preform is processed, and the preform is spliced with the material to be repaired in the form of a mortise and tenon structure. In the fiber line reinforcing step, SiC fiber lines are cross-wound in perpendicular directions to reinforce the mortise and tenon connection part. In the CVI deposition repairing step, the fiber preform and the fiber lines are deposited by means of a CVI process, so that they become SiC f / SiC ceramic matrix composite, which is closely connected with the damaged part by the cooperation of the dovetail type part, the cross-winding of the fiber lines and the mortise and tenon structure, so that the damaged material is repaired.

The present application provides a method for preparing a glycidyl (meth)acrylate compound of Formula 1, the method comprising reacting a (meth)acrylate compound of Formula 2 with a glycidyl compound of Formula 3 to produce the glycidyl (meth)acrylate compound, the reaction being performed in the presence of a catalyst, the catalyst being a Lewis base compound. The method enables extremely excellent target product yield and purity to be achieved at low cost and simple steps, and successfully eliminates defects associated with prior art catalysts during the reaction process. Formula 1

The utility model discloses a transfer car for circuit board production, including bottom plate, and the both ends fixed connection two support columns of bottom plate, and four support columns are rectangular distribution, and the bottom plate includes frame, placing plate and two adjusting grooves, and placing plate slidingly sets up on the frame, and two adjusting grooves are fixedly connected with the both ends of frame respectively, a plurality of longitudinal distribution is adjusted board and a top plate same with its structure above bottom plate, and the top plate is located above a plurality of adjusting board, and the adjusting board and top plate all are slidingly connected with four support columns, lifting assembly, and two lifting assemblies are symmetrically equipped with on every frame top near both ends place, the transfer car in the utility model cooperates through the unique lifting assembly and adjusting assembly, has realized the flexible adjustment of adjusting board and top plate height. The handle of rotating adjusting assembly, worm drives worm wheel to rotate, and then makes screw column group rotate, drives threaded sleeve to move along screw column, and the transmission of connecting rod realizes the lifting of adjusting board and top plate.

This invention discloses a wafer-level packaging method for filters. A positive photoresist dry film is used to form vias and grooves through a double exposure and single development process. This is then bonded to a wafer, with the grooves corresponding to the functional areas of the chip to form cavities. Metal is then deposited into the vias to connect to the chip's wiring for circuit routing. Finally, the package is diced to form a single filter package structure. This invention uses a single-layer positive photoresist dry film for packaging, with the cavities formed within the single-layer dry film. This eliminates the delamination issues of wall and top layers, improving device reliability. It also simplifies the process, shortens the process cycle time, and eliminates the need for multi-layer materials, saving costs.