376 results about "Surface film" patented technology

The invention belongs to the technical field of back contact cells, and particularly relates to a back contact cell manufacturing method for improving passivation performance and a back contact cell thereof, and the method comprises the steps: S2, depositing a first semiconductor layer and a phosphorosilicate glass layer on the back surface of a silicon wafer, and reserving the first semiconductor layer and the phosphorosilicate glass layer as a first mask layer; s3, performing texturing cleaning on the front surface of the silicon wafer; the first mask layer is removed in the final cleaning process after texturing; s4, forming a passivation layer and an anti-reflection layer on the front surface of the silicon wafer; s5, coating the back surface to form a second mask layer; s6, forming a second semiconductor opening region; and S7, texturing or polishing the second semiconductor opening area on the back surface, and cleaning by using an HF solution with the mass concentration of 0.5%-5% to remove the second mask layer and the winding plating layer generated in the front surface coating process in the S4. The back surface winding plating layer does not need to be removed, damage to the first semiconductor layer and the front surface film layer can be avoided, the overall passivation level can be improved, and therefore the battery efficiency is improved.

The invention discloses a method for forming a shallow trench isolation structure, and belongs to the technical field of semiconductors, the method for forming the shallow trench isolation structure comprises the steps of forming a first stop layer on a substrate, etching the first stop layer and a part of the substrate, and forming a trench; an insulating material is deposited in the groove and on the first stop layer, a second stop layer and a sacrificial layer are sequentially deposited on the insulating material, and the insulating material, the second stop layer and the sacrificial layer are provided with recesses in the groove; the sacrificial layer is ground and thinned until the second stop layer is exposed, and part of the sacrificial layer is reserved at the concave position of the second stop layer; and synchronously etching the second stop layer and the sacrificial layer until the second stop layer is completely removed. A stop layer and a sacrificial layer are deposited on an unground insulating material, the height difference of a wafer surface film layer is preliminarily compensated by using a grinding process, and then the residual film layer is synchronously consumed by using an etching process, so that the height difference of the insulating material is reduced, and the difficulty of a CMP (Chemical Mechanical Polishing) process is reduced.

The invention relates to a preparation method of a solar cell, the solar cell and a photovoltaic module, and belongs to the field of photovoltaic technology, and the preparation method of the solar cell comprises the steps: providing a substrate, the first surface of the substrate is provided with a pyramid structure, a doped conductive region is formed on the first surface, and a silica glass layer is formed on the side, away from the first surface, of the doped conductive region; laser processing is carried out on the first area part of the first surface, so that a low-concentration doped area is formed in the substrate, meanwhile, at least part of the silica glass layer located at the spire part of the pyramid structure in the first area is broken to form a notch, wet etching is carried out on the first surface side, and the notch can accelerate the rate of subsequent etching of the surface film layer of the first area; therefore, the efficiency of preparing the solar cell is improved.

The invention discloses a paper-based molded coffee capsule capable of being naturally composted, a PHA aqueous dispersion in-situ film forming barrier heat-sealing composite layer, a preparation method and application thereof, and belongs to the field of degradable packaging and single-cup extraction capsules. The capsule body is formed by molding paper pulp and is provided with a side wall, a bottom wall and a mouth flange; the biodegradable polyester-based film sealing component is connected to the flange in a sealing manner; and the polyhydroxyalkanoate barrier heat-sealing composite layer covers the inner surface of the body and the sealing surface of the flange. The composite layer is obtained by in-situ film forming of a particle size gradient double-layer aqueous dispersion and comprises a permeation anchoring layer located in paper pulp pores and a continuous compact layer located on the outer side in the thickness direction. The flange is a hot-pressing densified area, and a local thickening heat sealing ring is formed on the sealing face of the flange. Through physical anchoring of the small-particle-size components and surface film forming of the large-particle-size components, the moisture and oxygen blocking and interface bonding performance is achieved, and the brewing sealing performance is guaranteed.

The invention discloses a curved surface film covering flatness self-adaptive control method based on machine vision, and relates to the technical field of mechanical arm control. The system comprises a machine vision sensing module, a robot end effector, a composite controller and a distributed clamping jaw array. The method comprises the following steps: acquiring a fringe projection image sequence and dynamic trajectory data of an end effector; performing phase calculation and three-dimensional reconstruction on the image sequence, constructing a digital elevation model and calculating flatness error data; inputting the dynamic trajectory data into a feedforward controller to generate a compensation instruction, inputting the flatness error data into a feedback controller to generate a correction instruction, and superposing to obtain a comprehensive correction instruction; and acquiring a strain sensitivity matrix, distributing the comprehensive correction instruction into displacement execution parameters of each clamping jaw by utilizing pseudo inverse operation, and issuing and executing the displacement execution parameters. According to the method, real-time sensing and active intervention of dynamic deformation are realized, and the yield and batch consistency of curved surface film coating are remarkably improved.

The application discloses a paper-based moulded coffee capsule capable of natural composting, a PHA aqueous dispersion in-situ film-forming barrier heat-sealing composite layer and a preparation method and application thereof, and belongs to the field of degradable packaging and single-cup extraction capsules. The capsule comprises a capsule body formed by moulded paper pulp, a side wall, a bottom wall and a mouth flange, a biodegradable polyester-based film sealing member sealed to the flange, and a polyhydroxyalkanoate barrier heat-sealing composite layer coated on the inner surface of the body and the sealing surface of the flange. The composite layer is obtained by in-situ film-forming of a particle size gradient double-layer aqueous dispersion, and comprises an infiltration anchoring layer located in the pores of the paper pulp and a continuous dense layer on the outside along the thickness direction. The flange is a heat-pressed densification area, and a locally thickened heat-sealing ring is formed on the sealing surface of the flange. The application realizes the moisture and oxygen barrier and interface bonding performance through physical anchoring of small particle size components and surface film-forming of large particle size components, and guarantees the brewing sealing performance.

The invention discloses a compound fluralana external preparation for dogs, a preparation method and application, belongs to the technical field of veterinary drugs, and solves the problems that an existing preparation is poor in skin surface permeability, a solvent is easy to volatilize, and use experience and drug effect exertion are influenced. The preparation is prepared from the following raw materials: fluralana, moxidectin, ethyl butylacetamidopropionate and N, N-dimethylformamide. The preparation method comprises the following steps: adding N, N-dimethylacetamide, acetone, an auxiliary adjuvant, a transdermal penetration enhancer, an antioxidant and a surface film-forming agent; according to the invention, the combination of the fluralab and the moxidectin can play a synergistic effect and expand an anti-parasitic spectrum so as to achieve an internal and external driving effect; both the fluralab and the moxidectin belong to high-fat-soluble substances, parasites can be quickly repelled and killed by adding novel adjuvant natural parasite expelling ingredients, and meanwhile, the skin permeability can be improved by adding the efficient transdermal penetration enhancer, and the risk that medicine residues are licked by pets is reduced.

The invention provides a deep-absorption UV (ultraviolet) gloss oil composition for a scratch-resistant and doodling-resistant PVC (polyvinyl chloride) building material mask and a preparation method of the deep-absorption UV gloss oil composition, the deep-absorption UV gloss oil composition comprises a UV curing resin system, a reactive diluent 1, 6-hexanediol diacrylate, a specific photoinitiator compound system, a nano-scale scratch-resistant and wear-resistant filler, a fluorine-modified organic silicon anti-doodling aid and other aids, and the deep-absorption UV gloss oil composition does not contain matte powder. The preparation method comprises the following steps: coating a PVC building material mask base material with the UV gloss oil composition, covering an ultra-matte pressed film, then carrying out film pressing treatment to copy an ultra-matte surface structure and isolate oxygen, then carrying out sectional curing by adopting LED-UV lamps with different wavebands, and finally stripping the pressed film. Through collaborative innovation of a formula and a process, an extreme ultra-matte effect of which the glossiness is lower than 1.2 GU can be obtained without adding matte powder, meanwhile, the hardness of a coating can reach 5H or above, and the coating has excellent scratch-resistant and doodling-resistant performance, and is high in curing efficiency and environment-friendly in process.

The invention discloses a composite spraying film material for heat dissipation of an air conditioner outdoor unit. The composite spraying film material comprises a first complexing agent and a second complexing agent, according to the air compressor, the first complexing agent and the second complexing agent are cooperatively matched, the first complexing agent can form a rough material layer on the surface of the air compressor to serve as a bottom film layer, the rough surface is composed of countless randomly-distributed tiny concave-convex structures, the effective radiation area is increased through the concave-convex structures, and then the radiation efficiency is effectively improved; furthermore, a surface film layer is formed on the bottom film layer through a second complexing agent, the surface film layer is coated on the concave-convex structures in the bottom film layer, so that the radiation heat dissipation of each concave-convex structure in each direction is further improved, and the surface film layer and the bottom film layer jointly assist the heat dissipation of the surface oxide layer of the air compressor. The heat generated by working of the air compressor can be quickly dissipated, so that the temperature of the air compressor is kept in the optimal working temperature range, and finally, the refrigerating or heating effect can be close to the preset temperature.

The utility model belongs to the technical field of paint spraying devices, and particularly discloses an integrated small paint spraying device which comprises a shell and a sliding rail, the sliding rail is installed on the right side of the lower portion in the shell, a cart is connected to the upper portion of the sliding rail in a sleeved mode, a check block is fixed to the left side of the sliding rail, and four sets of idler wheels are installed at the bottom of the cart. A driving motor is installed in the center of the interior of the cart, and a connecting frame is fixed to the top of the cart. According to the integrated small paint spraying device, the upper portion of the sliding rail is sleeved with the cart, the handle is held, the connecting frame and the cart at the bottom are guided to walk along the top of the sliding rail, four sets of rolling wheels at the front position and the rear position all have the supporting and lubricating effects, and sprayed finished product accessories in a shell do not need to be manually contacted; when the accessory is taken out, the accessory can be placed in an external environment to stand for a certain time, and is disassembled after surface films of the accessories at the hanging rods and the hanging rings are formed, so that the problem that the accessories are inconvenient to take out and replace is solved.

The utility model relates to the technical field of laminating and laminating machines, in particular to a plastic floor laminating and laminating machine which is characterized in that during use, a plastic floor is placed on a conveying assembly to be conveyed, in the conveying process, a dust removal assembly carries out dust removal operation on the upper surface of the plastic floor, and after dust removal is completed, the plastic floor is subjected to laminating and laminating. The film covering assembly conducts upper surface film covering on the plastic floor subjected to dust removal, and the influence of dust on film covering is reduced; comprising a supporting table, a workbench and a notch, the workbench is arranged at the top end of the supporting table, the notch is formed in the top end of the workbench, the device further comprises a conveying assembly, a dust removal assembly and a film covering assembly, the conveying assembly is arranged in the notch, the dust removal assembly and the film covering assembly are arranged at the top end of the supporting table, and the dust removal assembly and the film covering assembly are both arranged above the conveying assembly.

The utility model belongs to the technical field of lampshade extrusion mould, especially a surface film -coated silica gel face guard extrusion mould, including extrusion host computer and extrusion auxiliary machine, the discharge end of extrusion host computer is installed with feed pipe, one end fixed mounting of feed pipe has main flow guide pipe, the inside of main flow guide pipe is provided with main flow guide cavity, the inner wall of main flow guide cavity with the feed inner wall of feed pipe fixed communication. This surface film -coated silica gel face guard extrusion mould, this silica gel face guard extrusion mould improves production efficiency and stability significantly through precision design, has optimized mould forming effect, has improved the design of auxiliary material runner and air vent, has ensured that material flows smoothly, has reduced bubble and impurity. Through the combination with black sanding matte film, not only has improved product appearance, also has avoided the reflection phenomenon, has increased the durability. The silica gel co -extrusion technology has simplified production technology, has reduced the cost, and has ensured product quality simultaneously.

This invention discloses a polymer-loaded drug-eluting nanoparticle with high encapsulation efficiency and its application in coatings and surface film materials. The polymer-loaded drug-eluting nanoparticles are prepared via emulsion polymerization, simultaneously loading antibacterial drugs with different log P values. The preparation process is simple, and the resulting product has small particle size, high molecular weight, high uniformity, and high drug encapsulation efficiency, achieving the substitution of non-reactive surfactants with reactive surfactants. A coating can be prepared using the above-mentioned polymer-loaded drug-eluting nanoparticles. The coating can be further used to prepare sustained-release antibacterial surface film materials through cross-linking film formation, exhibiting good mechanical properties, excellent chemical resistance, and high safety. This invention can be widely applied to various environmental and material surfaces, including but not limited to surface modification of instruments and building materials in residential and medical environments, thereby achieving a long-lasting antibacterial effect.

The utility model discloses a surface laminating device for packaging carton processing, which comprises a supporting mechanism, the supporting mechanism comprises a bottom plate, a storage mechanism is obliquely arranged on one side of the top end of the bottom plate, two supporting plates are symmetrically mounted on the other side of the top end of the bottom plate, an adjusting mechanism is arranged in the middle of the bottom plate, and a limiting mechanism is arranged on the upper end face of the storage mechanism. A winding roller is arranged at the top ends of the adjacent sides of the two supporting plates, bearings are arranged at the two ends of the winding roller, limiting grooves for the bearings to be embedded are formed in the side faces of the supporting plates, a fixing mechanism is arranged at the position, between the adjusting mechanism and the storage mechanism, of the top end of the bottom plate, and a cutting mechanism right facing the fixing mechanism is arranged in the bottom plate. The adjusting mechanism comprises a tension roller, a rotating shaft is arranged in the tension roller, the film laminating device has the advantages of being adaptive to paper boxes of different sizes and capable of flattening films, and the problems that an existing film laminating device is not adaptive to the paper boxes of different sizes, and the film laminating effect is uneven are solved.

A metasurface optical device includes a substrate, a film layer, and a metasurface structural unit array. The substrate includes a first surface and a second surface opposite to each other in a thickness direction of the substrate. The film layer is formed on the first surface of the substrate and includes at least one film group of films distributed at different positions on the first surface. Each film group includes one film, or a plurality of films stacked one over another in the thickness direction of the substrate. Each of the plurality of films includes a material with a corresponding refractive index to enhance transmission and / or reflection of light. The metasurface structural unit array includes a plurality of metasurface structural units formed on a side of the first film layer away from the substrate and extending in a direction away from the substrate.

The application discloses an automatic assembling double-sided film pasting line, which comprises a front conveying line and a rear conveying line, wherein the front conveying line and the rear conveying line are provided with gravity film covering components, a surface turning mechanism is arranged between the front conveying line and the rear conveying line, and the assembling piece is placed on the rear conveying line after being turned over by 180 degrees through the surface turning mechanism; a substrate feeding mechanism, a ring blocking assembling mechanism, a first surface film pasting unit and a second surface film pasting unit are sequentially arranged along the direction of the front conveying line and the rear conveying line. Through the series-parallel integration of the substrate feeding mechanism, the ring blocking assembling mechanism, the double-sided film pasting unit and the surface turning mechanism, the whole automation of substrate feeding, ring blocking assembling, front surface film pasting, surface turning and back surface film pasting is realized, double-film parallel production is realized, and the production efficiency is effectively improved.

The invention relates to the technical field of Litz wire processing equipment, in particular to a Litz wire surface covering film stripping device which comprises a fixing frame. The cutting mechanism is used for cutting the litz wire; the angle adjusting mechanism is used for adjusting the angle of the cutting mechanism; the waste treatment mechanism is used for treating accumulated waste; the angle adjusting mechanism is arranged on the fixing frame, the cutting mechanism is arranged on the angle adjusting mechanism, and the waste treatment mechanism is arranged on the fixing frame. The arranged cutter is matched with the shovel-shaped clamp at the front end, the cutter can accurately cut into a gap between a wire meter and a thin film, only an insulating film is cut without damaging an internal tiny enameled wire, meanwhile, the angle of the cutting mechanism can be adjusted through the angle adjusting mechanism according to the surface condition of the litz wire, and it is ensured that the cutter is always located at the optimal working position; and meanwhile, the key part of the cutter is wrapped by the clamp, so that the cutting effect is ensured, the scratch risk is reduced, and the potential safety hazard in the manual operation process is reduced.

The application discloses a kind of corrosion-resistant magnesium alloy with self-repair protection and preparation method thereof, it is related to magnesium alloy technical field, the mass percentage content of each component of the corrosion-resistant magnesium alloy includes: Al: 6-15%;Mn: 0.01-0.3%;Y: 0.1-2%;Cd: 0-0.1%;Be: 0-0.1%;The rest is Mg and unavoidable impurities.By adding trace alloying elements to control the organization, with the help of dense passivation oxide film formed on the surface of alloy matrix, to inhibit the corrosion failure problem caused by the damage of matrix surface film layer to pitting or surface corrosion, under long time neutral salt solution environment, when local corrosion occurs on the surface of magnesium alloy matrix, the protection of autogenous passivation film can prevent the corrosion medium from continuing to expand to the inside of matrix, and the formation of multiphase in the organization is avoided as much as possible, and the number of primary cell is reduced, so as to reduce electrochemical corrosion.

Aspects of the present disclosure generally relate to methods and apparatuses for processing transparent substrates, such as glass substrates. In one implementation, a film stack for an optical assembly includes a glass substrate including a first surface and a second surface. The film stack includes an assembly function layer formed on the first surface, a hardmask layer formed on the assembly function layer, and a substrate identification layer formed on the hardmask layer. The hardmask layer includes one or more of chromium, ruthenium, or titanium nitride. The film stack includes a backside layer formed on the second surface. The backside layer formed on the second surface includes one or more of a conductive layer or an oxide layer.

The application discloses a preparation method of a drawing dough, which comprises a basic formula and a supplement formula, the basic formula comprises dough premix powder, honey and coconut oil, the supplement formula comprises an antioxidant filler, a thickening agent and a surface film agent, intelligent test operation comprises the following steps: under F1 tension, carrying out drawing operation with a distance of L1, cutting 1 / 2 along the cross section of the drawing area, taking the vertical plane of the cut as a target area, obtaining a three-dimensional point cloud diagram of the target area, and obtaining the drawing number N and the average drawing diameter D of the target area from the three-dimensional point cloud diagram, and the dough in different formula states is compared, so that the problem that the dough is prone to aging and hardening under normal temperature or cold storage conditions, thereby affecting the drawing effect and taste, can be solved by intelligent food processing test, so that the dough formula with longer shelf life and quality guarantee period can be scientifically screened, the softness of the dough is better maintained, the drawing effect of the dough is better, and the taste is better.

The invention provides a coating system and a coating device, and relates to the technical field of vacuum coating. The coating device comprises a coating substrate carrier, a substrate driving mechanism, a film material container, at least one evaporation baffle plate and a baffle plate driving mechanism; the coating substrate carrier comprises a substrate bearing surface; the substrate bearing surface bears a to-be-coated substrate, and the to-be-coated surface of the to-be-coated substrate faces the film material container; the substrate driving mechanism drives the coating substrate carrier to rotate around a central axis; an opening of the film material container faces the to-be-coated surface of the to-be-coated substrate; the film material container comprises at least two containing cavities used for bearing film materials. An evaporation point location is arranged in the film material container; orthographic projections of the evaporation point positions on a plane perpendicular to the central axis cover the central axis; the film material at the evaporation point position can be evaporated under the action of a heating source; the evaporation baffle plate is positioned between the evaporation point position and the coating substrate carrier; and the baffle plate driving mechanism drives the evaporation baffle plate to move. According to the invention, the uniformity of film deposition is improved.

The invention discloses a preparation method of a ceramic reinforced metal matrix composite material based on atomic layer deposition coating. The preparation method comprises the following specific steps: 1, pretreatment of ceramic particles: surface cleaning, roughening treatment and surface activating treatment; 2, ceramic particle surface atomic layer deposition coating: preheating, precursor gas introduction, inert gas purging, oxygen source supply, inert gas secondary purging, cooling and annealing; and 3, preparation of the ceramic reinforced metal-based composite material: preparing a honeycomb-shaped ceramic prefabricated body, and pouring molten metal to obtain a ceramic reinforced metal-based composite material product. The atomic layer deposition technology is utilized, Al2O3, Ni or TiO2 films are deposited on the surfaces of the ceramic particles to improve the interface bonding force between the ceramic particles and the matrix, the surface films are uniform and compact, meanwhile, the thickness of the films can be accurately controlled, the wettability between the ceramic particles and the metal matrix is effectively improved, and the ceramic particles can be prepared. And the interface bonding force between the metal matrix and the ceramic particles is obviously improved.

Provided in the present invention are a polishing device and a polishing apparatus for removing a film from the surface of a substrate. The polishing device comprises: a polishing table configured to hold and rotate the substrate; and a polishing head provided with a polishing pad for coming into contact with and being pressed against the substrate to polish the film on the surface of the substrate, the area of the polishing pad being less than or equal to the area of the substrate. The substrate is divided into at least two regions in a circumferential direction based on the thickness distribution of the film on the surface of the substrate. The at least two regions include a first region and a second region. During the process of polishing the surface of the substrate, the substrate keeps rotating, and the polishing head is configured to polish the first region at a first polishing rate and polish the second region at a second polishing rate, the first polishing rate being different from the second polishing rate. In the present application, the polishing device controls the polishing rate on the basis of the local position of the polishing head on the surface of the substrate, thereby precisely controlling the profile of the film on the entire surface of the substrate.

This work investigates the beneficial roles of lithium bis(trimethylsilyl) phosphate (LiTMSP) which may act as a novel bifunctional additive for lithium ion batteries, in particular, LiNi0.5Mn1.5O4 (LNMO) / graphite cells. The cycle performance of LNMO / graphite cells is significantly improved with incorporation of LiTMSP. Trimethylsilyl functional group therein can react with HF generated through hydrolysis of LiPF6 by residual water in electrolyte solution, followed by a decrease in the concentration of metal ions dissolution from the electrode. The generation of superior passivating surface film derived by LiTMSP on graphite electrode, suppressing further electrolyte reductive decomposition and deterioration / reformation caused by migrated metal ions, is confirmed. Furthermore, LiTMSP derived surface film is likely to have better lithium ions conductivity with a decrease in resistance of the graphite electrode, improving rate performance of cells. The HF scavenging and film-forming effects of LTMPS are responsible for the less polarization of cells enabling to improve cycle performance.

The utility model discloses a petal-pulling type sealing gasket which comprises an upper layer, a connecting layer and an adhesive sealing composite layer which are sequentially compounded from top to bottom, the upper layer comprises a surface film; the adhesive sealing composite layer comprises an electromagnetic induction heating layer and an adhesive sealing layer which are sequentially compounded from top to bottom; the connecting layer comprises a connecting adhesive and a petal pulling layer; the connecting layer is used for compounding the upper layer and the adhesive sealing composite layer through a connecting adhesive, and an unbonded area is formed between the upper layer and the adhesive sealing composite layer; the flap pulling layer is arranged in the non-bonding area, and the flap pulling layer is compounded with the upper layer through a composite adhesive and / or the flap pulling layer is compounded with the bonding and sealing composite layer through an adhesive. The bottle cap has the advantage of being easy to open.

The invention provides a nano-composite anti-seepage coating for goaf sealing and a preparation method and application thereof. The impermeable coating comprises the following components in percentage by mass: 10 to 30 percent of nano silica sol subjected to surface organic modification, 15 to 35 percent of styrene-butadiene latex subjected to pH buffer stabilization, 0.5 to 10 percent of functional nano material subjected to surface activation treatment, 20 to 60 percent of superfine sand and the balance of short fiber, inorganic powder filler and auxiliaries. The method comprises raw material pretreatment; step-by-step gradient blending is performed; and functions are compounded. According to the application, the nano-composite anti-seepage coating is applied to surrounding rock reinforcement, crack plugging or anti-seepage sealing engineering of a coal mine goaf. The slurry has the advantages of being high in deep infiltration capacity, excellent in surface film forming and internal compatibility and stable in performance, an internal infiltration reinforcing layer and a surface sealing layer can be formed at the same time after construction, and an integrated double-layer anti-seepage network is formed.

The invention relates to the technical field of solar cells, and particularly discloses a back contact cell, a cell assembly and a photovoltaic system, and the back contact cell comprises a substrate which comprises a first surface and a second surface which are oppositely arranged; the doped layer is arranged on the first surface, the doped layer comprises a plurality of first doped layers and second doped layers which are alternately arranged and have opposite polarities, a laminated region is arranged between at least one adjacent first doped layer and second doped layer, the second doped layer comprises a laminated section in the laminated region, and the laminated section is arranged between the first doped layer and the second doped layer. The lamination section is arranged on one side, opposite to the first surface, of the first doping layer; and the cavity is arranged in the lamination area and is arranged between the lamination section and the first surface, one end, far away from the lamination section, of the cavity is a bottom end, and the bottom end at least extends into the first doping layer. According to the back contact cell, the photo-generated current density can be effectively improved, and the cell conversion efficiency is further effectively improved. Meanwhile, the problems of fragments, surface film layer stripping and the like which are easily caused by difficult release of stress of a heat-spot-resistant structure in the prior art are solved, so that the long-term stability and reliability of the battery are effectively improved.

The application is a circuit board production method, comprising the following steps: S1, performing rough cleaning on the wafer surface of the etched circuit board; S2, placing the wafer after rough cleaning into a vacuum cavity, performing vacuumization on the vacuum cavity, and the vacuum degree in the vacuum cavity ranges from 5 Pa to 2 Pa; S3, introducing inert gas into the vacuum cavity at a speed ranging from 10 to 5000 sccm, performing electrification on the graphite electrode at a voltage ranging from 200 to 5000 V; and completing one cleaning; in the application, the graphite electrode is used as a target source to ionize the inert gas and active gas, the problem that the metal electrode as a target source causes damage to the surface cleaning of the circuit board is solved, and the surface Darcy value of the circuit board is effectively improved; the inert gas and active gas are used to clean the surface of the circuit board at the same time, the oxidation rate of the surface film of the circuit board after cleaning can reach 99.9%, the wafer surface is cleaned twice, the surface cleanliness of the wafer is ensured, and the use effect of the circuit board is improved.

This application relates to a method and system for detecting wafer parameters. The detection method includes providing multi-wavelength sequential illumination; modulating the illumination light into multi-step phase-shifting structured light using a spatial light modulator and projecting it onto the wafer surface; acquiring the multi-step phase-shifting structured light reflected from the wafer surface using a broadband imaging unit to obtain a structured light image sequence, ensuring consistent pixel positions in the images under multi-wavelength sequential illumination; synchronously controlling the timing of wavelength switching of the illumination light, structured light modulation, and image acquisition to obtain a multi-wavelength structured light image sequence; performing multi-spectral film thickness inversion on the multi-wavelength structured light image sequence to obtain a film thickness distribution map; and performing multi-wavelength phase fusion three-dimensional reconstruction on the multi-wavelength structured light image sequence to obtain three-dimensional topography data. The detection system includes an illumination module, a spatial light modulator, a broadband imaging unit, and a data processing module. This invention can acquire the three-dimensional topography and surface film thickness of wafers, and is also suitable for topography detection of etching trenches with aspect ratios.

The utility model provides a grinding device for table surface film pressure pretreatment, which comprises a grinding table assembly, a grinding table is supported by a plurality of supporting legs and is of a hollow structure, and a table plate is adsorbed through negative pressure holes; the surface grinding assembly is movably arranged on the grinding table, comprises a main body transverse frame, a transverse moving seat and a grinding wheel, and can realize transverse and rotary movement; the driving assemblies are arranged on the two sides of the grinding table, drive the surface grinding assembly to move longitudinally and can control the surface grinding assembly to ascend and descend. A chipping collecting structure and a chipping cleaning device located on the side face of the surface grinding assembly are further arranged. According to the device, through cooperative work of all the structures, the problems that in existing platen polishing, the polishing efficiency is low, the quality is poor, chippings are not cleaned thoroughly, and the equipment adaptability is poor are solved, the polishing precision, quality and efficiency are improved, meanwhile, the working environment is kept clean, the service life of equipment is prolonged, the equipment universality is enhanced, and the device is suitable for the platen film pressure pretreatment polishing process.