497 results about "Layer thickness" patented technology

The invention discloses a composite material performance prediction method based on multi-field coupling multi-scale analysis and a knowledge graph, which integrates microstructure modeling, graph neural network representation learning, cross-scale parameter coupling modeling and robust optimization analysis. The method is suitable for prediction and design of key mechanical properties such as modulus, strength and toughness of a thermosetting / thermoplastic composite material under different working conditions. The method comprises the following steps: firstly, constructing a grain-level tissue knowledge graph based on an electron backscatter diffraction image, secondly, constructing a multi-scale input system comprising a microscopic variable (such as a fiber volume fraction), a mesoscopic variable (such as a layer thickness sequence) and a macroscopic variable (such as a load condition), and finally, performing robust optimization by utilizing a multi-objective evolutionary algorithm to obtain a multi-scale input system. And outputting a material performance prediction result and a knowledge graph associated with the ji structure-process-performance. According to the method, the accuracy and interpretability of performance prediction of the composite material can be remarkably improved, and data-knowledge dual-drive support is provided for design optimization of the high-performance composite material.

A method and apparatus for correcting the thickness of a film layer, and a computer device. The method comprises: acquiring parameter values of controllable parameters and time information corresponding to the parameter values, and generating a first vector set and a second vector set; inputting the first vector set and the second vector set into a pre-trained prediction model to output a predicted value of a thickness correction value, the pre-trained prediction model comprising a convolutional neural network and a gated recurrent unit arranged in parallel, the convolutional neural network being configured to process the first vector set, and the gated recurrent unit being configured to process the second vector set; and adjusting the parameter values of the controllable parameters on the basis of the predicted value of the thickness correction value.

The invention relates to the field of photovoltaic cell preparation, and particularly provides a formula adjusting method and device for a plasma enhanced chemical vapor deposition process. The method comprises the following steps: acquiring a state parameter vector of a plasma enhanced chemical vapor deposition process machine in an operation process, and predicting a predicted film layer thickness corresponding to the state parameter vector; if the predicted film layer thickness does not meet the preset error, selecting k adjustable factors with top contribution degrees in the state parameter vectors as target adjustment factors; according to the gradient descending direction of the film layer thickness, searching a historical state parameter with the minimum Euclidean distance with the state parameter of each target regulation factor in a good product historical database, and taking the historical state parameter as a current formula parameter; and according to the state parameter vector corresponding to the current formula parameter, regenerating a predicted film layer thickness until the predicted film layer thickness meets a preset error, and taking the parameter in the current state parameter vector as a target formula. According to the technical scheme provided by the invention, the reject ratio of photovoltaic cell production is reduced.

The invention relates to a sample preparation method for coating thickness detection, which comprises the following steps: circularly heating and cooling a base material to obtain a weakly combined base material with a base material body and a coating locally separated; and forming a cut extending along the thickness direction of the coating in a local separation area of the coating of the weak combination base material to obtain a coating section sample vertical to the surface of the base material. Due to the difference of linear cutting expansion coefficients of a base material body and a coating, alternating thermal stress is initiated at the interface of the base material body and the coating through cyclic heating and cooling processes, so that the base material and the coating are controllably and locally separated, a weakly combined base material is obtained, and a cut extending in the thickness direction is prepared in the surface of the locally separated coating. A coating section sample perpendicular to the surface of the base material can be obtained through simple mechanical separation. The method can be used for efficiently preparing a coating sample with clear section and good integrity at low cost on the premise of not depending on expensive or high-damage equipment.

The invention discloses a rapid forming method for preparing a multi-layer thick and high-precision complex part, and belongs to the technical field of additive manufacturing, the method comprises the following steps: S1, part self-adaptive partitioning treatment: firstly partitioning the whole target part according to an internal entity and an outer surface, then adaptively dividing a partition into sub-partitions, and adaptively designing the width of the outer surface; s2, multi-layer thickness collaborative slice printing is conducted, specifically, the optimal forming layer thickness is set according to the partition characteristic difference, layer thickness collaborative slice design is achieved, and meanwhile the incidence relation between the layer thickness and the outer surface width is established; and S3, layered alternate scanning printing is conducted, specifically, highly-differentiated laser process parameters and scanning strategies are adopted for slices of different partitions. By means of the method, the metal part with the complex geometrical characteristics and the variable-thickness structure can be efficiently and precisely manufactured, and the quality and efficiency of the SLM technology in the complex metal part manufacturing process are remarkably improved.

The invention discloses an electroplating process method for preparing a deep-etching thick metal mask, and belongs to the technical field of micro electro mechanical system electroplating processes. Comprising the following steps: firstly, carrying out photoetching and patterning on the surface of a wafer by using positive photoresist; then, carrying out seed layer sputtering on the wafer subjected to pattern photoetching, and forming a to-be-electroplated region with a preset pattern through a stripping process; then, photoetching is carried out on the to-be-electroplated area through negative photoresist, and a thick photoresist layer with the thickness larger than that of a preset metal coating is formed; and finally, the electroplating area is electroplated, and the metal coating with the preset thickness is obtained. According to the method, the negative photoresist process is adopted, so that the transverse growth of the metal coating is effectively inhibited, the perpendicularity of the side wall of the metal coating is improved, and meanwhile, the damage to the surface of the wafer when the seed layer in the non-electroplating area is removed is avoided. The problems that mushroom-shaped protrusions are easily formed on the edge of a plating layer, crystal grains are coarsened and the like in the electroplating process of an existing electroplating method are solved.

The invention relates to the technical field of FPC (Flexible Printed Circuit) laminated structure optimization, in particular to a module FPC laminated structure optimization system based on signal integrity, which comprises a laminated parameter sensitivity extraction module used for defining the thickness of a dielectric layer, the thickness of a copper foil and a dielectric constant as closed interval values with upper and lower boundaries according to FPC design specifications. According to the method, the accumulated deviation area and the normalized confidence score are obtained in combination with integral operation, conversion from a frequency domain to a time domain and from qualitative analysis to quantitative evaluation is achieved, tiny flaws of impedance continuity are captured, inferior paths are screened based on the confidence score, and a physical junction area is positioned. The geometric gravity center of the deviation area is calculated to be matched with the slope and the length of the gradient line, a smoothly-transited geometric figure is constructed, structural compensation can be achieved in areas where impedance is prone to sudden change such as a reinforcing plate junction and covering film pressing, and signal reflection caused by physical sudden change of a stacked structure is eliminated.

The invention belongs to the technical field of optical beam splitting elements, and particularly relates to a beam splitter prism depolarization film, a preparation method thereof, a beam splitter prism and a preparation method thereof. The beam splitter prism depolarization film provided by the invention comprises a first SiO2 film layer, a first Ta2O5 film layer, a first Al2O3 film layer, a metal silver layer, a second Al2O3 film layer, a second Ta2O5 film layer and a second SiO2 film layer which are sequentially laminated, wherein the first SiO2 film layer is in contact with the surface of a substrate. According to the beam splitter prism depolarization film provided by the invention, the number of film layers is obviously reduced, the total film thickness is obviously reduced, the film layer thickness is greatly optimized, the film material consumption cost and the equipment energy consumption are reduced, and the processing efficiency is greatly improved; meanwhile, the risks of film layer breakage and electroplated layer falling are reduced; the film layer contains less thin layers, the equipment monitoring is more accurate, the actual effect is closer to the design, the achievable specification is more strict, and the practical value is excellent.

The invention provides a film layer thickness uniformity detection method and system, and the method comprises the steps: providing a substrate which is provided with a to-be-detected film layer; scanning the thickness of the to-be-detected film layer and generating detection information; the thickness uniformity of the to-be-detected film layer is detected in a multi-azimuth mode according to various data obtained from the detection information, and the method comprises the steps that at least two thickness curves of the to-be-detected film layer are obtained according to the detection information, and the thickness curves are parallel to the scanning direction; and comparing the plurality of obtained thickness curves, and judging whether the thickness uniformity of the to-be-detected film layer reaches the standard or not according to a comparison result. According to the film layer thickness uniformity detection method and system provided by the invention, micron-sized defects in the transparent material film layer can be detected, and meanwhile, the spraying state of the film layer can be confirmed and judged according to the detected defects.

The invention is suitable for the technical field of additive manufacturing, and provides an intelligent powder amount control method and system for additive manufacturing equipment, and the method comprises the following steps: 1, calculating the maximum value SNmax of the sum of process weighted sectional areas of all parts in a unit segmentation region in an Nth layer; 2, composite multiple factors of intelligent powder amount control are determined, wherein the composite multiple factors comprise SNmax, a part layer thickness value coefficient k and a dynamic compensation value E; step 3, calculating the pre-estimated required powder spreading amount F of the current layer based on multiple composite factors; 4, a closed-loop feedback method is adopted, the forming area obtained after powder laying is shot through a camera, image processing is carried out, the dynamic compensation value E is adjusted according to the processing result, and dynamic control over the powder amount is achieved; the problems that powder loss is too much, powder laying is insufficient and unstable, and powder amount estimation is difficult to adapt to complex processes and parts are solved, so that the system ensures that the powder laying amount is always in the optimal parameter under the condition that manual intervention is not needed.

The embodiment of the invention provides a zinc layer thickness control method and system, and relates to the technical field of zinc layer thickness control, the method comprises the steps that real-time feature data of a molten zinc liquid film attached to the surface of a steel strip is obtained, and the real-time feature data is obtained through a non-contact high-frequency sensor array arranged in the width direction of the steel strip; according to the instant characteristic data and a preset mode library, identifying a behavior mode of the molten zinc liquid film; adjusting purging parameters of the air knife according to the behavior mode to obtain target purging parameters; and the molten zinc liquid film is purged according to the target purging parameters, and the target purging parameters are fed back and adjusted according to the purged molten zinc liquid film. The stability and uniformity of the thickness of the zinc layer can be improved.

The invention provides a PVC decorative film production process data acquisition and tracing method, and relates to the technical field of intelligent manufacturing and quality control, and the method comprises the steps: collecting film layer thickness and calendaring process parameters in real time through an online detection system; calculating a microscopic uniformity index MUI on the edge side based on the thickness data, and calculating a process stability index PSI based on the temperature data; inputting the MUI and the PSI into a quality early warning model, and predicting a precision stripe defect risk level; when the early warning exceeds the threshold, an instruction is automatically generated to adjust the temperature or the linear speed of the calendering roller; all process data, control instructions and quality indexes are stored in an associated mode, and a batch quality control file is established; and the model is periodically updated by adopting an online learning mechanism. According to the invention, real-time early warning and closed-loop control of microdefects are realized, quality consistency and yield are improved, and intelligence and stability of production are guaranteed through full-process data tracing and model self-optimization.

The invention relates to a method for determining the layer thickness of an at least partially transparent surface coating on the surface of a substrate, using a measuring device for emitting focused radiation. The invention is characterized in that the distance between the surface of the substrate and the measuring device for emitting focused radiation is changed by a relative movement between the measuring device and the substrate, wherein the image of the radiation is captured in different relative positions, wherein in the case of an image with a clear outline edge, focusing is inferred at the interface between the surface coating and the substrate and the current relative position is stored as the first position, and wherein in the case of an image surrounded by scattering effects, focusing is inferred at the interface between the surface coating and the air and the current relative position is stored as the second position, after which the difference between the first and second positions is used to determine theTaking into account the refractive index of the transparent surface coating, the layer thickness of the at least partially transparent surface coating is determined.

The invention discloses a ROS2-based surface exposure rapid prototyping method, device and system and a medium, and relates to the technical field of additive manufacturing. The method comprises the steps that all hardware nodes are reset and initialized, a forming platform is flush with a powder laying plane, powder is supplemented, and a scraper is reset. And importing the three-dimensional model of the part to be formed into ROS2-based slicing software, generating a support structure after attitude optimization, slicing according to a preset layer thickness to obtain a slice layer, and performing rasterization processing to generate a black and white mask image. And circulating subsequent steps for each slice layer until all slice layers are completed: descending a servo motor of a forming bin according to a preset layer thickness, providing powder by a powder supply bin, and then spreading and slicking the powder. And sending the black and white mask image corresponding to the current slice layer to the DLP to execute projection. The SLM laser node performs selective laser melting according to the projected area. And a molten pool image is captured in real time and analyzed, an analysis result is input to an ROS2 decision node to dynamically adjust process parameters, and closed-loop control is achieved.

The application discloses a color-coated plate coating film thickness detection device and method based on laser measurement, and relates to the technical field of detection. The color-coated plate coating film thickness detection device based on laser measurement comprises a conveying mechanism which is installed at the bottom of a detection table and is used for synchronously unwinding and winding the color-coated plate. Two first mounting members are fixed on the detection table. A removing mechanism for removing burrs on the surface of the color-coated plate is installed on the first mounting member. A second mounting member is fixed on the detection table and is located at the tail end of the conveying of the color-coated plate. A plurality of laser detection devices for detecting the coating thickness of the color-coated plate are installed on the second mounting member. A pressing assembly for avoiding the bulging of the color-coated plate during conveying is also installed on the second mounting member. The spiral pushing mode of the application is similar to the pushing and pulling force during the cutting of a kitchen knife. Therefore, the cutting force only acts on the burrs, and the problem that the burrs and the normal coating near the burrs are lifted together does not occur.

The invention provides high-strength and high-toughness four-dimensional gradient stainless steel and an additive manufacturing method thereof. The additive manufacturing method comprises the following steps that S1, printing raw materials are prepared, wherein the printing raw materials comprise 316L stainless steel powder and 316L / TiC mixed powder; the preparation method of the 316L / TiC mixed powder comprises the following steps: uniformly mixing 2-6wt% of nano TiC powder and 94-98wt% of 316L stainless steel powder, putting the uniformly mixed powder into a ball mill, and carrying out grinding treatment, so that the nano TiC powder is uniformly attached to the surface of the 316L stainless steel powder; s2, laser additive manufacturing is conducted, specifically, the two kinds of powder of the printing raw materials are placed in a laser additive manufacturing device to be printed, the two kinds of powder are alternately printed during printing, and the number of printing layers of each kind of powder is 1-100 till the needed sample size is obtained; the technological parameters of laser additive manufacturing are as follows: the laser power is 150 to 500 W, the scanning speed is 400 to 1400 mm / s, the interlayer spacing is 0.04 to 0.1 mm, and the layer thickness is 0.01 to 0.05 mm; in the additive manufacturing process, argon is adopted as protective gas.

The invention provides a method and device for measuring the thickness of a large-area coating of a curved-surface workpiece, and relates to the technical field of coating thickness measurement, and the method comprises the steps: obtaining the point cloud data of a target coating region of the curved-surface workpiece, and calculating the Gaussian curvature of each point; dividing a curved surface corresponding to the target coating area into a plurality of target curved surface patches with different curvature levels according to Gaussian curvature, and further generating a curved surface model; dividing the initial grid based on the curved surface model to obtain a plurality of initial measurement points; controlling the mechanical arm to measure the thickness of the target coating area according to each preliminary measurement point to obtain a preliminary thickness data set; adjusting grid nodes of the initial grid according to the initial thickness data set to obtain a plurality of target measurement points; controlling the mechanical arm to measure the thickness of the target coating area according to each target measuring point to obtain a target thickness data set; and generating a thickness distribution cloud picture according to the target thickness data set. According to the invention, high-precision measurement of the coating thickness of the large-area curved-surface workpiece is realized.

The invention relates to the field of packaging substrates, in particular to a fine circuit packaging substrate and a manufacturing method thereof. The packaging substrate comprises a core plate, the core plate comprises a first surface and a second surface, a first circuit layer is distributed on the first surface of the core plate, a second circuit layer is distributed on the second surface of the core plate, the core plate comprises a first metal column, the first metal column is connected with the first circuit layer and the second circuit layer, and filler is contained in the first metal column. The distance of the first surface of the first metal column protruding out of the first surface of the core plate is greater than the thickness of the first circuit layer; the distance that the second surface of the first metal column protrudes out of the second surface of the core plate is larger than the thickness of the second circuit layer. A fine circuit can be formed on the surface of the core board, the precision of the circuit layer is high, the thickness of the circuit layer can be accurately controlled, the lateral corrosion amount of the circuit is extremely small, and the yield of the substrate is good. The bonding force between the circuit layer and the core plate is strong, and the overall heat resistance and mechanical stress of the substrate can be effectively improved.

The present application relates to the field of packaging substrate, particularly relates to a fine line packaging substrate and a manufacturing method thereof. The packaging substrate comprises a core board, the core board comprises a first surface and a second surface, the first surface of the core board is provided with a first circuit layer, the second surface of the core board is provided with a second circuit layer, the core board comprises a first metal column, the first metal column connects the first circuit layer and the second circuit layer, and the first metal column comprises a filler inside. The first surface of the first metal column protrudes from the first surface of the core board by a distance greater than the thickness of the first circuit layer; the second surface of the first metal column protrudes from the second surface of the core board by a distance greater than the thickness of the second circuit layer. Fine lines can be formed on the surface of the core board, the circuit layer has high precision, the thickness of the circuit layer can be accurately controlled, the side etching amount of the circuit is extremely small, and the yield of the substrate is good. The bonding force between the circuit layer and the core board is strong, which can effectively improve the heat resistance and mechanical stress of the whole substrate.

This invention discloses a three-dimensional relief ceramic tile and its preparation method. The three-dimensional relief ceramic tile comprises, from bottom to top, a base layer, a base glaze layer, a three-dimensional layer, a glaze layer, and a polishing layer. The base layer is located at the bottom of the ceramic tile and has a thickness of 8-10 mm. The base glaze layer is formed after applying a base glaze to the base layer and has a thickness of 0.5-1 mm. The three-dimensional layer is a pattern layer formed by inkjet printing on the base glaze layer and has a thickness of 1.5-2.5 mm. The glaze layer is formed after applying a surface glaze to the three-dimensional layer and has a thickness of 0.4-0.8 mm. The polishing layer is formed after polishing the glaze layer. This invention, through the combination of an ultra-white base glaze, a multi-layer inkjet-printed three-dimensional layer, and a surface glaze layer using multi-layer overlapping glazes, enables the three-dimensional relief ceramic tile to clearly reflect the texture and feel of the original stone, resulting in better visual impact and artistic expression, enhancing the three-dimensional effect and artistic appreciation of the ceramic tile, and meeting the market demand for high-end decorative ceramic tiles.

The application is suitable for the field of 3D printing technology, and provides a 3D printing Z-axis compensation method and device, electronic equipment and storage medium, wherein the method mainly comprises the following steps: traversing all triangular meshes spliced on a 3D model to form the 3D model; slicing the 3D model layer by layer and obtaining all slice images; selecting an Nth layer and an N+Mth layer slice image; comparing pixel gray values of the Nth layer and the N+Mth layer slice image to obtain a gray value difference area as a to-be-processed area of the N+Mth layer slice image; performing gray value reduction processing on pixels in the to-be-processed area of the N+Mth layer slice image; and storing the processed slice image data in a storage unit. The application can reduce the generation of secondary thickness exceeding the layer thickness when the current layer is solidified and formed, thereby improving the model printing precision.

A display device includes: a through hole provided through a resin layer and all layers that are provided as overlying and underlying layers of the resin layer; and a non-display area including, in an extension of at least one of a plurality of inorganic insulating films from a display area and at least partway through a thickness of the resin layer, a slit formed so as to surround at least a part of the through hole, wherein the slit has two opposing side faces at least either one of which has an upper portion including the at least one of the plurality of inorganic insulating films, and the at least one of the plurality of inorganic insulating films that is shaped like an eave is, in the slit, in direct contact with a first inorganic sealing film covering the display area and the non-display area including the slit.

A device and a method for the non-contact measurement of a rotating object (50) are provided. During the rotation of the object (50), the thickness (d) of a coating (51) of the object (50) is determined, taking into account the current rotational position of the object (50), by identifying a circumferential region (52) of the object (50) that is positioned essentially perpendicular to the axis of a measuring beam (S). By continuously or stepwise rotating the object (50), a complete profile of the thickness (d) of the object (50) can be obtained in this way.

The application relates to a spatial double-curved continuous bridge structure based on a non-uniform layering process and a construction method, and the concrete 3D printing bridge body comprises a plurality of longitudinally closely arranged arch span units, the middle part of the arch span unit is downwardly bent in the transverse direction, the middle part of the arch span unit is upwardly bent in the longitudinal direction, the whole is a double-curved structure, and the top part is provided with a longitudinal groove; each arch span unit comprises a plurality of longitudinally closely arranged U-shaped segmented printing components, and the segmentation lines between the U-shaped segmented printing components are distributed in a radial manner in the longitudinal direction. The application designs and constructs a spatial double-curved continuous bridge, combines the free forming capacity of the concrete 3D printing technology and the stress advantage of the arch structure, introduces non-uniform layering slicing, path optimization and multi-degree-of-freedom printing and other technologies, and can ensure the stability of the printing process and the quality of the components; meanwhile, the non-uniform layering control technology is adopted, accurate printing of variable layer thickness can be realized, and the effective connection of the printing components and the foundation and the steel structure and the positioning and installation precision of the whole bridge are ensured.

The present disclosure relates to the technical field of display, and provides a display panel and a manufacturing method therefor, and a display apparatus, which can solve the problem of slope angles of existing reflective structures being unable to be flexibly adjusted due to the limitation of the thickness of support layers. The display panel of the present disclosure comprises: a base substrate: a support layer, located on the base substrate, and comprising a plurality of support sub-layers stacked along a side facing away from the base substrate, wherein the support layer has cup-shaped structures passing through the plurality of support sub-layers along the thickness direction, a side wall of each cup-shaped structure comprises a plurality of sub-side walls sequentially connected in a direction away from the base substrate, and a corner structure is formed at a connecting portion of any two adjacent sub-side walls; and a plurality of light-emitting devices in one-to-one correspondence with the cup-shaped structures, wherein each light-emitting device comprises a first electrode, a light-emitting layer, and a second electrode sequentially arranged along a direction away from the base substrate, the first electrode at least covers the bottom of the corresponding cup-shaped structure, and at least a part of the first electrode further covers the side wall of the cup-shaped structure.

The invention discloses a thin infrared high-reflection mirror and a preparation method thereof, and belongs to the technical field of optical devices. The preparation method comprises the following steps: depositing a Ni-Ti alloy film on a heated Ti alloy substrate in a deposition atmosphere in which Ar gas and a small amount of NH3 gas are introduced by adopting a radio frequency magnetron co-sputtering process and taking a Ti target and a Ni target as sources; the Ni target sputtering power is increased in a stepped mode, so that the Ni content in the film layer is gradually increased from the interface to the surface, and a component gradient structure is formed; and carrying out vacuum annealing and polishing treatment after deposition. Through the etching effect of the NH3 active group and the component gradient structure design, the internal stress of the film layer is synergistically reduced, the density and the interface bonding force are improved, and the obtained reflector has the advantages of moderate film layer thickness, firm bonding, high surface quality and easy processing, and is suitable for light-weight and high-performance infrared optical systems in the fields of aerospace and the like.

An anti-reflective film and a display device including the same is provided. The anti-reflective film includes a first refractive layer and a second refractive layer disposed on the first refractive layer. A refractive index of the first refractive layer is greater than a refractive index of the second refractive layer. The first refractive layer includes a first sub-layer and a second sub-layer disposed on the first sub-layer. A first nano-composite layer is formed between the first sub-layer and the second sub-layer. The first nano-composite layer includes a material formed by bonding a material of the first sub-layer with a material of the second sub-layer. A thickness of the first sub-layer is at least 1.2 times larger than a thickness of the second sub-layer. The thickness of the second sub-layer is less than 5 nm.

To provide a laminated film improved in adhesion while having good optical characteristics, and a method for manufacturing the laminated film.SOLUTION: The laminated film 1 of the present invention includes a base film 2, a cured resin layer 3 disposed on one surface in the thickness direction of the base film 2, and an inorganic material layer 4 disposed on one surface in the thickness direction of the cured resin layer 3. The ratio of the ion intensity of the C3H3O2 fragment to the ion intensity of the HSi2O5 fragment measured by time-of-flight secondary ion mass spectrometry is 1.0 * 10 - 1 or more. In addition, the total reflectance of the laminated film 1 from one side in the thickness direction of the inorganic material layer 4 with respect to irradiated light of wavelengths 380nm to 780nm of a standard illuminant D65 is 0.40% or less.SELECTED DRAWING: Figure 1

The utility model relates to the field of coating equipment, concretely to a coating equipment convenient to clean. Including main part, vacuum system, heating device, target material subassembly, sealing door, import and export, door handle lock, tray, pivot, step motor and connection frame etc. structure. Adopt the utility model can ensure that work piece is fixed firmly in the coating process, avoids the problem such as the film layer thickness uneven, surface flaw because of work piece shaking, displacement, provides basic guarantee for high quality coating.