90 results about "Laser patterning" patented technology

The invention relates to the technical field of photovoltaic cell manufacturing, and provides a photovoltaic cell film layer laser patterning method, device, system and equipment and a medium, and the method comprises the steps: obtaining a preset patterning film opening depth of a photovoltaic cell; establishing a corresponding relation between the PSG thickness of the photovoltaic cell and the laser processing power required for reaching the preset graphical film opening depth; scanning by using an interference sensor to obtain the PSG thickness of the photovoltaic cell; and the laser processing power is adjusted in real time according to the PSG thickness and the corresponding relation, so that uniform laser patterning of the photovoltaic cell film layer is completed according to the preset patterning mold opening depth. At least the problem that uniformity and efficient production are difficult to consider in existing photovoltaic cell laser film opening can be solved.

The invention discloses an image recognition and precision control system for laser imaging equipment, which relates to the technical field of laser imaging equipment and comprises an edge fracture recognition module, a geometric consistency calculation module, a path fusion reconstruction module, a contour consistency verification module and a parameter self-regulation module. And the path fusion reconstruction module is used for constructing a connection section based on edge tail end trend consistency and curvature similarity results, fitting a fracture path by adopting a Bessel interpolation algorithm with a curvature penalty term, and generating a complete processing contour meeting a continuity requirement. According to the method, the problem that the processing path is discontinuous due to pixel-level edge fracture in the image acquisition stage in laser imaging processing is solved, geometric consistency identification of the non-closed curve edge and automatic fusion of the fracture path are realized, a continuous closed high-precision processing contour is generated, and the image identification robustness and the processing stability are improved.

The invention discloses a laser powder bed sheet pattern distortion real-time correction system and method based on a phase type light valve, and relates to the technical field of metal additive manufacturing. The system comprises a polarization laser, a beam expanding and collimating unit, a reflecting mirror, a phase-type spatial light modulator, a reflecting mirror, a relay optical system, a galvanometer / field lens system, a movable spectroscope, a reference plane mirror and a forming cylinder. A double-loop correction system with a position sensitive detector as an absolute reference and a wavefront sensor as direct feedback is constructed, information of the position sensitive detector and the wavefront sensor is unified in a phase domain through a frequency domain fusion algorithm, and a comprehensive compensation phase diagram capable of completing pattern generation and distortion correction at the same time is generated. And loading to a phase type light valve to carry out high-power laser patterning modulation, and melting metal powder of a powder bed.

The invention relates to a stretchable conductive polymer composite electrode, a preparation method and application thereof, the stretchable conductive polymer composite electrode is provided with a conductive network layer and a conductive polymer elastomer layer, and the conductive network layer and the conductive polymer elastomer layer are stacked to form a double-layer composite structure. The stretchable conductive polymer composite electrode disclosed by the invention has the beneficial effects of high conductivity, high stretchability, laser patterning and cyclic regeneration. And high conductivity can still be maintained under 100% tensile strain. According to the stretchable conductive polymer composite electrode, high-precision patterning can be achieved through the laser patterning technology, a flexible circuit with the minimum line width being 25 microns is prepared, and customized processing is achieved through digital design. The composite electrode can form a film again after solvent-assisted dissolution, so that closed-loop regeneration of an electrode material is realized.

The application provides a kind of hemispherical harmonic oscillator precision trimming device and method based on femtosecond laser, comprising: vacuum system, femtosecond laser trimming system, fixture, workpiece motion system and mass imbalance test system;Femtosecond laser trimming system contains focusing module, laser light path, femtosecond laser, femtosecond laser energy continuous regulation module and femtosecond laser patterning and control system;Workpiece motion system includes workpiece rotation mechanism and workpiece translation mechanism, workpiece rotation mechanism is used to realize the rotation motion of fixture and hemispherical harmonic oscillator;Workpiece translation mechanism is connected with workpiece rotation mechanism, for realizing the three-direction translation motion of hemispherical harmonic oscillator and workpiece rotation mechanism;Mass imbalance test system contains resonator excitation module and test module;Resonator excitation module is used to excite hemispherical harmonic oscillator;Test module is used to detect the vibration of hemispherical harmonic oscillator that has been excited.The application effectively reduces the influence of major trimming pit on the stability of resonator standing wave and gyroscopic precision.

The invention provides a TBC battery and a preparation method thereof. The current density is remarkably improved by adjusting printing and laser patterns, reducing the area of a P region or / and an N region, increasing the area of a gap region, reducing the metal shielding area and improving the photon utilization rate; and compounding of a metal region is reduced, and Voc and passivation performance of the battery piece are improved. By polishing the gap region with the pyramid suede, the reflection of incident light in the silicon substrate can be increased, so that the Isc of the cell is improved, and meanwhile, as the initial gap region is protected by the mask layer and is not damaged by wet corrosion subsequently, the height difference between the gap region and the boron / phosphorus diffusion layer can be reduced, the transverse transmission of carriers in the silicon substrate is facilitated, and the FF is improved. According to the TBC battery prepared by the method, under the condition that the number of partitions on the back surface of the battery is not changed, the areas of the P region and the N region are reduced, so that the area of the gap region is increased, the metal shielding area is reduced, the photon utilization rate is improved, and the current density is obviously improved; and compounding of a metal region is reduced, and Voc and passivation performance of the battery piece are improved.

The invention belongs to the field of transfer membranes, and particularly relates to a scratch-resistant transfer membrane material and a preparation process thereof. The preparation method is based on blending of rigid components and flexible resin and intermolecular crosslinking reinforcement. According to the coating, waterborne polyurethane resin is used as a main film-forming material, and meanwhile, high-hardness waterborne acrylic resin with a specific proportion is doped, so that the cured coating has hardness for resisting deformation and elasticity for absorbing stress. On the basis, an environment-friendly cross-linking agent is introduced into the formula of the coating, and the auxiliary agent chemically reacts with an active functional group on a resin molecular chain in the baking process, so that the cohesion strength and the overall durability of the coating are enhanced. And the compactness of the coating is further improved through the cross-linked structure, so that the coating has better tolerance to solvents and heat in subsequent processing, and the definition of laser patterns and the gloss of an aluminum-plated layer are guaranteed. And the final product meets the strict solvent residue limit standard, and is suitable for the packaging field with higher safety requirements.

A method and system for data acquisition in online optical inspection for additive manufacturing (AM), comprising the steps of: (a) acquiring optical data by applying a plurality of continuous or pulsed parallel laser beams onto at least one region of interest (108) during the AM process, the at least one region comprises finite static or moving locations including in a cooling region and a printed region (210); and (b) recording reflected laser patterns (110) using at least one image sensor (204) positioned to capture interactions between the plurality of parallel laser beams and the at least one region of interest; the surfaces of the at least one region become solid for each subsequent deposition layer, concurrently with the recording of changes in the reflected laser patterns over at least one image sequence; the changes include abnormal surface geometric profile patterns during material cooling with underlying subsurface defects.

The invention discloses a hybrid passivation back contact cell and a production method thereof, and relates to the field of solar cells. The preparation method comprises the steps of silicon wafer polishing; sequentially depositing a tunneling oxide layer and a doped polycrystalline silicon layer on the back surface of the polished silicon wafer; a P region and an N region in future are defined on the doped polycrystalline silicon layer on the back surface of the silicon wafer through laser ablation; performing acid polishing treatment on the front surface of the silicon wafer; performing alkali texturing treatment on the front surface of the silicon wafer; depositing a passivation layer on the front surface of the silicon wafer; cleaning the back of the silicon wafer; an intrinsic microcrystalline silicon layer and a doped microcrystalline silicon layer are sequentially deposited on the back surface of the silicon wafer; carrying out laser ablation treatment on intrinsic and P-type microcrystalline silicon on an N-region contact region on the back surface of the silicon wafer, and exposing the N + doped polycrystalline silicon layer under the intrinsic and P-type microcrystalline silicon; depositing a TCO layer; laser ablation is carried out on the upper portion and the periphery of the polished lamination area of the N area and the P area, and an isolation ring groove is formed; the TBC passivation advantage is reserved, meanwhile, the technological process is simplified through laser patterning, and the efficiency bottleneck is broken through P-region intrinsic microcrystalline silicon and boron-doped microcrystalline silicon.

The application discloses an iridium oxide modified fluorine-doped tin oxide electrode and a preparation method and application thereof. The electrode comprises a light-transmitting fluorine-doped tin oxide conductive glass substrate and an in-situ attached iridium oxide nano-modified layer. The preparation method comprises the following steps: preparation and aging of a precursor solution, alternating current electrochemical deposition, annealing and cleaning, and laser patterning treatment. The application further discloses a cell impedance sensor organ chip system comprising the electrode and application of the system in in-vitro drug screening. The application utilizes the low cost and light-transmitting property of the fluorine-doped tin oxide and the excellent charge injection capacity of the alternating current deposited iridium oxide nano layer to greatly reduce the interface impedance. The scheme meets the in-situ optical observation, realizes the high-sensitivity biological impedance monitoring comparable to gold electrodes, effectively solves the problems of high cost and complex process of the existing organ chip electrode, and is very suitable for popularization and application as a disposable high-throughput consumable.

To provide an improved semiconductor package with increased density, a printed circuit board (PCB) core assembly, and a method for forming them.SOLUTION: A method of structuring a substrate for a semiconductor core assembly that may be utilized to form a semiconductor package assembly, a PCB assembly, a PCB spacer assembly, a chip carrier assembly, an intermediate carrier assembly (e.g., for a graphics card), or the like, wherein a silicon substrate core is structured by direct laser patterning, one or more conductive interconnects are formed in the substrate core, and one or more redistribution layers are formed on a surface thereof. The silicon substrate core may then be utilized as a core structure for a semiconductor package, PCB, PCB spacer, chip carrier, intermediate carrier, or the like.SELECTED DRAWING: Figure 2

The invention relates to the technical field of general papermaking, in particular to tipping paper for laser transfer cigarettes and a processing method thereof.The tipping paper for the laser transfer cigarettes is used for tobacco products and comprises a first body paper layer, a pattern layer, at least one reinforcing layer and at least one second body paper layer; the first body paper layer and the pattern layer are outer layers of the tipping paper, the first body paper layer is in direct contact with a cigarette holder of the tobacco product, and the first body paper layer or the second body paper layer contains cellulose; the reinforcing layer is arranged between the first raw paper layer and the second raw paper layers and / or between the two second raw paper layers, the reinforcing layer is of a net structure, and a substance forming a hydrogen bond with cellulose is arranged in the reinforcing layer; the pattern layer is arranged on one side of the second body paper layer, and the pattern layer comprises laser patterns.

A vehicle driving simulator includes a steering wheel, a picture generator, a display surface, a laser light source, and a conversion unit. The picture generator is configured to generate an on-road picture. The on-road picture is displayable on the display surface. The laser light source is configured to generate a laser pattern on the display surface. The conversion unit is configured to convert rotation of the steering wheel into displacement of the laser light source in a horizontal direction.

The application discloses a kind of furniture laser pattern engraving control system and method, it is related to laser engraving control technical field, including engraving task division module, control module, acquisition module and laser engraving module, the engraving task division module includes: processing information unit, the engraving part material data of furniture to be processed is obtained, engraving part material data;Mapping unit, user uploads engraving pattern, and virtually map to the engraving part of furniture, obtain target engraving pattern in the corresponding engraving part of furniture;Division unit, based on the mapping position of pattern and the engraving part material data corresponding to mapping position.The application obtains the material parameter of furniture engraving part, and combines the engraving pattern provided by user, constructs temperature response prediction model, divides initial engraving area with thermal response similarity, realizes targeted engraving area scheduling under the premise of keeping material thermal safety.

The invention discloses an iris lesion geometric parameter measurement system based on laser triangulation, and particularly relates to the technical field of optical measurement and geometric calculation, and the system comprises a laser projection module which is used for forming an iris surface topography modulation optical pattern; the image acquisition module is used for acquiring a modulated laser pattern on the surface of the iris; the data processing module is used for processing the laser pattern image and extracting sub-pixel coordinates of the lesion area of the laser pattern; the three-dimensional coordinate construction module is used for converting the sub-pixel coordinates of the lesion area into three-dimensional space coordinates; and the geometric parameter measuring module is used for calculating geometric parameters of the lesion area. The iris lesion geometric parameter measurement system based on laser triangulation is constructed through the laser projection module, the image acquisition module, the data processing module, the three-dimensional coordinate construction module and the geometric parameter measurement module, and the limitation of the prior art in the aspects of measurement dimension, precision, efficiency and automation is solved.

The invention relates to the technical field of unmanned aerial vehicle vision obstacle avoidance, in particular to an unmanned aerial vehicle binocular vision obstacle avoidance system and a distance measurement and obstacle avoidance method thereof, and solves the obstacle avoidance problem when light is weak or binocular vision is abnormal by adding a laser module in a double-unmanned aerial vehicle binocular vision obstacle avoidance system to emit customized patterns and combining with an optical filter. The laser module can supplement environment textures and light to enable binocular vision to work normally again, and can also project laser patterns to a reflecting surface of an obstacle by adopting a monocular distance measurement cooperation scheme because the closer the distance is, the smaller the projected patterns are, and the farther the distance is, the larger the projected patterns are. By utilizing the characteristic, monocular distance measurement and auxiliary binocular distance measurement are performed, the distance data of the front obstacle is more accurately provided, and the probability of obstacle avoidance failure is reduced. Flexible adaptation of binocular normal work and abnormal switching is achieved, and the obstacle avoidance stability and complex environment adaptability of the unmanned aerial vehicle are greatly improved.

The invention belongs to the technical field of alumite, and particularly discloses a shading anti-counterfeiting alumite preparation method which comprises the steps that a base film layer serves as a carrier, coating is conducted in sequence in a roller coating mode, drying is conducted, a release layer and a color layer are formed, and the color layer contains an anti-doodling auxiliary; preparing a laser pattern on the color layer through a mold pressing process; coating a shading layer solution on the mould-pressed color layer in a roller coating manner, incompletely spreading the shading layer solution based on the low surface energy characteristic of the surface of the color layer, and drying to form a shading layer which incompletely covers the color layer; performing vacuum evaporation on the shading layer to form a plating layer; and coating a thermosensitive adhesive layer on the plating layer to obtain the shading anti-counterfeiting alumite. According to the invention, a double anti-counterfeiting structure of the laser pattern and the random shading is constructed, and the problem that a traditional mould pressing pattern is easy to counterfeit due to a layout rule is solved.

The invention discloses a preparation method of a TBC solar cell. The preparation method comprises the following steps: alkali polishing; sequentially depositing a silicon dioxide tunneling oxide layer and an intrinsic amorphous silicon layer; carrying out boron diffusion conversion to obtain P-type polycrystalline silicon; laser patterning is prepared for N region deposition; acid pickling and alkali polishing; sequentially depositing a silicon dioxide tunneling oxide layer and an intrinsic amorphous silicon layer again; carrying out phosphorus diffusion conversion to obtain N-type polycrystalline silicon; removing PSG from the front side; patterning to expose the N-type polycrystalline silicon region; performing alkali texturing treatment to form a pyramid structure, and performing rounding treatment; pickling the back surface and reserving the polycrystalline silicon layer; depositing an aluminum oxide passivation layer and a silicon nitride passivation layer on two sides; laser trepanning is carried out to expose the P-type polycrystalline silicon region and the N-type polycrystalline silicon region; metallizing to form a precise electrode; and performing light injection to obtain the TBC solar cell. According to the TBC solar cell provided by the invention, BSGamp; the PSG is used as a mask, and the laser patterning / corrosion slurry is used for replacing photoetching and other mask materials, so that the compatibility with the existing TOPCON production line is high.

A structural deformation measurement method based on a cross laser reference and an unmanned aerial vehicle comprises the steps that a cross laser emitting device is adopted, and a cross laser pattern is projected on a target to serve as a static reference; an unmanned aerial vehicle is adopted to shoot a measuring point area in a close range, non-contact and high-precision displacement and rotation angle measurement is achieved according to the relative position change of a target and a projection pattern, and the method comprises the steps that A, a cross laser reference and unmanned aerial vehicle-based structural deformation measurement system is arranged in a target area to be measured, and video data acquisition is performed; b, identifying a target in the video image by adopting YOLOv11, and extracting a region of interest (ROI); c, extracting accurate positions of the visual target and the cross laser line through preliminary and accurate two-stage positioning; d, analyzing the relative position change of the target and the cross laser ray, and calculating the displacement and rotation angle response of the target; according to the measuring method, the static laser reference is introduced, and the relative change of the target and the laser pattern is analyzed, so that the synchronous measurement of the two-dimensional displacement and the rotating angle is realized, and the measuring method has the advantages of non-contact and high-precision measurement.

A system and method for applying a laser pattern using machine vision positioning and alignment of a wafer is provided. A laser annealing machine configured to apply laser annealing to a workpiece may be configured to provide visual positioning and alignment of the workpiece for applying laser annealing. Providing visual positioning and alignment of a workpiece includes acquiring visual data representing the workpiece via at least one visual sensing device, identifying one or more features in the workpiece or identifying one or more regions in the workpiece based on the acquired visual data to ensure that the workpiece is centered and aligned when a scanning beam is applied to the workpiece. The identifying includes adjusting an operation of the at least one processing component.

The utility model discloses a camera obscura and laser processing equipment, and the camera obscura comprises a box body which is provided with an inner cavity and an opening formed in the bottom, and the opening is communicated with the inner cavity; the laser field lens is arranged at the top of the box body; the partition plate is installed in the inner cavity and divides the inner cavity into an upper sub-cavity and a lower sub-cavity, the sub-cavity located on the lower portion is communicated with the opening, and the partition plate is provided with a hollowed-out structure for laser to pass through; the air outlet is formed in the box body and is communicated with the sub-cavity positioned at the lower part; and the air inlet is formed in the box body and is communicated with the sub-cavity positioned at the lower part. Dust generated in the machining process can be effectively prevented from escaping on the laser path, the purity of the laser beam is kept, and interference of the dust on the laser spot quality is avoided. The hollowed-out structure on the partition plate not only can block laser beams beyond the standard line width, but also effectively reduces the line width widening problem caused by divergence of the laser beams at the head and tail positions of the pattern, ensures that the laser pattern is more accurate, and improves the accuracy of patterning processing.

The invention provides a laser auxiliary positioning system and method based on intelligent control. The method comprises the steps of collecting a polarization image reflected by the surface of a target positioning area; generating a multi-dimensional feature description matrix in a laser projection process according to polarization state distribution and spatial distortion features of each polarization sub-image in the polarization image; constructing a polarization fingerprint spectrum of the target positioning area according to the relevance between the laser projection features under different polarization channels identified by the multi-dimensional feature description matrix and the target spatial position; reconstructing the projected laser pattern into an optimized image matched with a preset positioning template on the surface of the target positioning area based on a pose adjustment instruction generated by the polarization fingerprint spectrum; and determining a positioning completion state of the target positioning area based on the optimized image. According to the technical scheme provided by the invention, the laser pattern emitted by the laser can be accurately mapped under the interference of the nonlinear change of the surface optical characteristic.

This invention discloses a wind field system and laser processing method for laser patterning, belonging to the field of laser patterning technology. The ion wind component is divided into a central cavity, a first cavity, and a second cavity. The central cavity serves as a blowing channel; in blowing mode, air compressed by an air compressor is ionized under the high pressure of electrodes, forming a charged compressed air stream, which is then blown out from the outlet to the processing area. Both the first and second cavities serve as extraction channels; in extraction mode, the suction force of a dust collector removes processing byproducts from the processing area. The ion wind component is fixedly connected to the laser processing head and can move with the laser processing head, generating a synchronously moving local ion wind field. This allows for timely, uniform, and stable removal of processing byproducts during large-format laser patterning with a small equipment size and low cost, while ensuring wind field uniformity and appropriate force.

The application discloses a crystal growth interface three-dimensional morphology and rate in-situ monitoring system and method based on dynamic laser plane scanning, and relates to the technical field of crystal growth. The method comprises the following steps: establishing a mapping relationship between an image pixel coordinate and an actual space size; projecting a scanning laser pattern, and synchronously collecting a laser pattern image reflected or scattered by the interface and geometrically deformed due to height change to obtain an image sequence; reconstructing a three-dimensional morphology model of the solid-liquid interface; quantitatively judging a concave-convex state of the interface; and calculating a pushing distance of the solid-liquid interface and a corresponding crystal growth rate. The application realizes real-time and digital observation on the whole region and three-dimensional shape of the crystal growth interface for the first time. The application systematically solves the core technical blank of "inability to realize full-field, three-dimensional, dynamic and quantitative in-situ monitoring" in the prior art, and provides an effective tool for optimizing a crystal growth process and improving crystal quality and consistency.

The invention discloses a manufacturing method of a thin film jumper resistor. In the method, a substrate is provided. The substrate is provided with a front surface, a back surface, a first side surface and a second side surface, a first resistive layer and a second resistive layer are respectively formed on the front surface and the back surface. The first and second resistive layers are patterned using a laser to separate the first and second resistive layers from an outer edge of the substrate. The first resistive layer and the second resistive layer each comprise a middle section, a first end section and a second end section. Forming a first insulation protection layer and a second insulation protection layer respectively covering the middle sections of the first resistance layer and the second resistance layer; and forming a first end electrode and a second end electrode. The first end electrode extends from the first end section of the first resistive layer to the first end section of the second resistive layer through the first side surface. The second end electrode extends from the second end section of the first resistive layer to the second end section of the second resistive layer through the second side surface. The resistive layer is defined in a laser patterning mode, miniaturization of the thin film jumper resistor can be achieved, and the advantage of low cost is achieved.

The disclosure is directed to techniques in preparing an atom probe tomography (“APT”) specimen. The disclosed techniques form an APT specimen or sample directly on a DUT region on a wafer. The APT specimen is formed integrally to the substrate or the support structure, e.g., a carrier, under the APT specimen. A laser patterning is conducted to form a trench in the DUT and one or more bump structures in the trench. The laser patterning is relatively coarse and forms a coarse surface texture on each of the bump structures. A low-kV gas ion milling using a dual-beam focused ion beam (“FIB”) microscopes is then conducted to shape the bump structures into APT specimen.

The present disclosure describes systems and methods for designing a wafer anneal chamber that combines laminar or near-laminar flow of a purge gas over the wafer, higher flow rates and pressures in the upper portion of the chamber, and specific travel of the laser pattern relative to the direction of the laminar flow of the purge gas.

The invention discloses a laser focusing method and device, a laser marking machine and a computer readable storage medium, and is applied to the laser marking machine, and the method comprises the steps: obtaining a plurality of to-be-scored images at different machining heights; performing average processing according to the gray value of each pixel in each to-be-scored image to determine an average gray value; determining the contour area according to the contour coordinate information of the laser pattern contained in each to-be-scored image; according to the closeness degree between the average gray value and a preset reference gray value, performing weighting processing on the contour area and the normalized value of the maximum contour area, and determining the score value of each to-be-scored image; and determining the processing height corresponding to the to-be-scored image with the highest scoring value as the focusing working distance of the laser marking machine. Therefore, the two features of the average gray value and the contour area are fused, so that the to-be-scored image of which the average gray value is closest to the preset reference gray value and the contour area is closest to the standard size is screened out from the plurality of to-be-scored images.

The present invention discloses a method and system for data acquisition in online optical inspection for additive manufacturing (AM), comprising the steps of: (a) acquiring optical data by applying a plurality of continuous or pulsed parallel laser beams onto at least one region of interest (108) during the AM process, wherein the at least one region comprises finite static or moving locations including in a cooling region and a printed region (210); and (b) recording reflected laser patterns (110) using at least one image sensor (204) positioned to capture interactions between the plurality of parallel laser beams and the at least one region of interest; wherein surfaces of the at least one region become solid for each subsequent deposition layer, concurrently with the recording of changes in the reflected laser patterns over at least one image sequence; wherein the changes include abnormal surface geometric profile patterns during material cooling with underlying subsurface defects.

The invention specifically discloses a TBC battery with a locally doped back surface and a preparation method thereof, and relates to the technical field of solar cells, and the preparation method comprises the steps: preparing a tunneling silicon oxide layer and a polycrystalline silicon layer on the back surface of an N-type silicon substrate, and then forming a doped source region through boron slurry and phosphorus slurry printing to replace traditional high-temperature diffusion; then laser scanning is utilized, laser spots in an electrode contact area are overlapped to achieve heavy doping by adjusting a laser pattern, laser spots in a non-contact area are tangent to achieve light doping, and therefore selective doping is achieved. The invention also provides a battery structure prepared by the method. According to the preparation method, the process is simplified, the production cost is greatly reduced, the production time is greatly shortened, meanwhile, the metal contact resistance and carrier recombination are effectively reduced by forming the back transverse high-low junction, the open-circuit voltage, the short-circuit current and the final photoelectric conversion efficiency of the cell are remarkably improved, and large-scale industrial application of the TBC cell is facilitated.