148 results about "Dot array" patented technology

The invention discloses a vertical-horizontal mixed enhanced selective laser melting lattice structure based on a face-centered cube (FCC) and a preparation method of the vertical-horizontal mixed enhanced selective laser melting lattice structure. According to the method, starting from a basic FCC lattice unit, firstly, an in-plane enhanced transition lattice structure FCC-H (FCC-Horizon) is formed through a crossed structure of an inclined main rod and an auxiliary rod perpendicular to the main rod; the secondary auxiliary rods are distributed in a radial mode to construct a continuous bridging grid by further optimizing the rod piece connecting mode and the diameter proportion, and finally the vertical-horizontal mixed enhanced FCC-VH (FCC-Vertical Horizon) lattice structure is obtained. According to the structure, through the synergistic effect of the inclined main rods and the auxiliary rods perpendicular to the main rods, the compressive strength, the specific stiffness, the specific strength and the specific energy absorption of the structure are remarkably improved while the light weight is kept. According to an experiment, 316L stainless steel powder is adopted, an FCC-VH lattice structure is prepared through a selective laser melting (SLM) technology, the compression deformation mode of the FCC-VH lattice structure is converted into multi-node cooperative bearing from local buckling of a basic FCC, and the overall compression performance is more remarkably improved.

The invention belongs to the technical field of laser material processing, and relates to a low-temperature laser synchronous welding method for a main-grid-free structure of a TOPCon battery, which comprises the following steps of: dividing and shaping incident laser into a plurality of paths of independent laser sub-beams matched with a fine grid line pattern through a spatial light modulator, and constructing a synchronous laser dot matrix energy field; the method comprises the following steps of: obtaining temperature distribution of a welding area in real time through a high-resolution infrared thermal imager, constructing a full-field temperature data set, performing temperature extraction and deviation analysis on the data set, generating power compensation amount of each sub-area, and judging whether to trigger power fine adjustment or not based on a preset temperature uniformity control judgment rule. And a fine adjustment object and a final compensation amount are determined during triggering, heat preservation and curing treatment are carried out on a fine-adjusted welding area, finally, a main-grid-free welding structure which is in uniform low-temperature connection with all the fine grid lines is formed, and uniform, reliable and low-damage synchronous connection between all the fine grid lines and the welding strip is achieved.

The application provides a high-precision dot array density development method, system, medium and product of a beauty lens, relates to the technical field of beauty lens production, and comprises the following steps: obtaining multi-modal fashion data through a crawler technology and extracting a trend semantic vector from the multi-modal fashion data; mapping the trend semantic vector to micro-physical parameters for defining a beauty lens pattern based on a pre-trained neural network model to obtain an initial dot array parameter set; performing graphical rendering on the initial dot array parameter set to obtain a plurality of initial beauty lens dot array patterns; simulating the wearing effect of each initial beauty lens dot array pattern on a three-dimensional human eye model through simulation software to obtain a plurality of virtual wearing effect diagrams; and determining an initial beauty lens dot array pattern with an aesthetic evaluation score greater than a preset score threshold as a final beauty lens dot array pattern. By implementing the method, the limitations of a traditional design element library are broken, the generation of beauty lens patterns is more innovative and diverse, and the innovation and pop fit of the beauty lens patterns are improved.

The invention relates to an anti-dazzle glass dot matrix arrangement method and anti-dazzle glass, and the anti-dazzle glass dot matrix arrangement method comprises the following steps: setting an initial round dot in a central area of a layout area, and annularly generating a first round chain by taking the initial round dot as a center; a common circumscribed circle is generated outwards with the starting circle point and the end point circle point of the first circular chain as the reference to serve as a first circular chain extension circle point, and a second circular chain is generated outwards in the clockwise direction or the anticlockwise direction with the first circular chain extension circle point as the center; and sequentially generating second round chain extension dots along the generation direction of the second round chain, sequentially generating a next round chain along the generation rule of the second round chain and the second round chain extension dots, and stopping the generation of the round chains until the layout area is full of the round chains.

The invention relates to the field of medical health, in particular to a breathing throw pillow used for collecting abdominal breathing signals. Comprising a throw pillow case and at least one bag body which is fixed on the throw pillow case and is made of an elastic material, an accommodating space for accommodating the embedded sensing device is formed between the bag body and the throw pillow case, and a notch for embedding the embedded sensing device is formed between the bag body and the throw pillow case; the size of the notch is smaller than that of the short edge of the embedded sensing device; an anti-skid dot matrix is arranged on the throw pillow case in the accommodating space, and the density of the anti-skid dot matrix is gradually reduced from the periphery to the central area; correspondingly, the four corners and the center of the bottom of the rectangular bearing frame are each provided with a spherical groove, and the height of the anti-skid points, corresponding to the spherical grooves in the bearing frame, in the anti-skid dot matrix is larger than that of the anti-skid points in other positions in the anti-skid dot matrix. According to the invention, the sensor can be detachably mounted in the bolster by means of the supporting frame.

The invention relates to the technical field of molecular diagnosis and graphic processing, in particular to an electronic microarray chip dot matrix negative and positive judgment method based on an ISFET sensor. A chip hole site corresponds to an ISFET sensor, and after a hole bottom specific nucleic acid probe and a target sequence are hybridized and extended, the voltage of the sensor is changed. The method specifically comprises the following steps: data preprocessing: filtering median values of multi-frame electric signals of a hole site and taking a mean value; the dot matrix identification comprises the steps of threshold demarcation, Canny edge detection, circular Hough transform, optimal circle screening by Kdtree, array numbering and abnormal deletion processing to position a dot matrix; and calculating a result, extracting a signal difference value of the D1 stage and the D4 stage, evaluating numerical values of the positive quality control array and the to-be-detected sample array through a numerical value of the negative quality control array, and judging a final calculation result. According to the method, response changes are rapidly analyzed through image recognition, false detection and missing detection caused by numerical value differences in different arrays are reduced through multiple times of detection, and the detection accuracy is improved by selecting the most possible area through tickets.

The invention discloses a thin-walled workpiece robot polishing follow-up dot matrix circulating auxiliary device which comprises a polishing robot mechanism, a thin-walled workpiece and a follow-up dot matrix magneto-rheological supporting mechanism arranged right in front of the polishing robot mechanism. A left positioner and a right positioner are arranged on the two sides of the follow-up dot matrix magneto-rheological supporting mechanism and are configured to clamp the thin-wall part from the two sides so that the thin-wall part can be synchronously displaced along with the left positioner and the right positioner. The thin-wall part is arranged vertically above the follow-up dot matrix magneto-rheological supporting mechanism, and the working end of the polishing robot mechanism is arranged above the thin-wall part. Active and self-adaptive supporting is provided from the lower portion, cutting force applied by a grinding robot is effectively offset, vibration and deformation of a workpiece are greatly restrained, and machining precision and surface quality are guaranteed.

The invention discloses a disposable photo-thermal self-heating wet tissue, a preparation method of the disposable photo-thermal self-heating wet tissue and a wet tissue product, and belongs to the technical field of hygienic products. The disposable photo-thermal self-heating wet tissue sequentially comprises a transparent leakage-proof layer, a photo-thermal layer and a cleaning layer from top to bottom, wherein the photo-thermal layer comprises a three-branch azobenzene / graphene composite fiber woven mesh and a hot melt adhesive dot array, and the hot melt adhesive dot array fixes the three-branch azobenzene / graphene composite fiber woven mesh between the cleaning layer and the transparent leakage-proof layer. The three layers can be compounded and fixed through the hot melt adhesive dot array in the photo-thermal layer of the wet tissue, the energy density of composite fibers of the photo-thermal layer is high, rapid and stable photo-thermal conversion can be achieved through sunlight or blue light irradiation, a traditional chemical heating agent is replaced, the chemical leakage risk is completely eliminated, the temperature is controllable, and the mechanical stability is good; the requirements of one-time cleaning and warm keeping are met, and wide application prospects are achieved.

The invention relates to the technical field of cadmium telluride power generation glass, in particular to a copper-doped back contact layer, a preparation method of the copper-doped back contact layer and cadmium telluride power generation glass. The preparation method of the copper-doped back contact layer comprises the following steps: firstly preparing the back contact layer, then preparing a copper paste dot matrix on the back contact layer, and finally carrying out two-stage heat treatment, the first-stage heat treatment temperature of the two-stage heat treatment is 180-220 DEG C, and the second-stage heat treatment temperature of the two-stage heat treatment is 250-300 DEG C. According to the preparation method, an intrinsic zinc telluride (i-ZnTe) buffer layer is introduced and combined with a dot-matrix copper doping technology, and a super-stable back contact structure which is gently transited in energy band, extremely low in interface recombination and strictly limited in Cu ions is constructed between the CdTe absorption layer and the metal back electrode, so that the cadmium telluride power generation glass which is higher in efficiency and longer in service life is prepared.

The invention discloses a mark point array for a visual tactile sensor, a sorting matching method of the mark point array, the visual tactile sensor and a binocular matching and three-dimensional reconstruction method. According to the mark point array, the mark points are divided into the center mark point, the multi-level anchor points and the common mark points according to functions, the mark points are achieved through size layering, rapid classification can be achieved, point-by-point comparison is not needed, and the grouping efficiency of follow-up recognition is greatly improved; meanwhile, the multi-level anchor points and the common points are arranged in a concentric circle layer mode with the center mark point as the center, the multi-level anchor points are arranged on even circle layers, the first-level anchor points are arranged on multiple even circle layers and located on multiple first-level rays starting from the center, multiple main sectors are divided, and a global position reference datum is established; finally, the secondary anchor points are arranged on a preset ring layer and located on a plurality of secondary rays, each main sector is equally divided into sub-sectors, the local reference is refined, the efficiency, robustness and certainty of follow-up mark point sequencing matching can be improved, and therefore high-precision three-dimensional reconstruction is achieved.

The application is suitable for the technical field of image display control, and provides a display control method, a display control device and a display screen controller, which comprises the following steps: determining S different random arrays corresponding to S LED dot arrays respectively; determining the cumulative value of the values included in the random arrays to obtain the total number of time segments corresponding to each random array; for each random array, determining the time segment duration corresponding to each value included in the random array according to the display duration of a single image frame and the total number of time segments corresponding to the random array; after obtaining an image frame to be displayed, determining, for each LED dot array, whether the LED dot array is lit on the time segment corresponding to the value included in the random array corresponding to the LED dot array according to the image data corresponding to the LED dot array in the image frame and the total number of time segments. Through the above method, the probability of leaking the displayed information of the LED display screen when displaying information can be reduced.

This invention discloses a vehicle-mounted backlight that eliminates white clumps, relating to the field of vehicle-mounted display devices. It includes a light guide plate, an LED light source disposed on one side of the light guide plate, and an optical film assembly disposed on the light-emitting surface of the light guide plate. The light guide plate has an incident light surface and an emitting light surface. Its back side has a dot array for converting point light sources into surface light sources. The dot array includes several light-guiding dots arranged in a non-uniform pattern, forming at least one directional channel on the back side of the light guide plate for directing airflow during adsorption, thereby reducing air stagnation in the edge areas. The LED light source is arranged in an array, with its density and position matching the high-density areas in the non-uniform dot layout of the light guide plate. The LED light source is used to inject light into the light guide plate. This vehicle-mounted backlight, through its non-uniform dot layout and airflow channel, combined with a light source matching design, eliminates adsorption white clumps at the source, improving display quality and reliability in vehicle environments.

The utility model relates to the technical field of optical lenses, in particular to a miniature dot matrix contrast-reducing lens, which comprises a lens, the lens comprises a central optical area and a miniature dot matrix area, the miniature dot matrix area comprises two dot matrix structures, namely a large dot matrix with the diameter of 0.18 mm and a small dot matrix with the diameter of 20-30 microns, the number ratio of the large dot matrix to the small dot matrix is 1: 3-1: 8, and the number ratio of the large dot matrix to the small dot matrix is 1: 3-1: 8. The covering density of the dot matrix areas is 10-45%, the dot matrix spacing is 0.2-0.65 mm, the depth of the dot matrix is 2-8 microns, the edge of the dot matrix is provided with a smooth transition area of 0.05-0.1 mm, the lens further comprises micro-lens areas, and the micro-dot matrix areas and the micro-lens areas are alternately distributed. The central optical area of the lens is not covered by the dot matrix, so that clear view is guaranteed; the contrast of the dot matrix area is accurately regulated and controlled, full-view blurring is avoided, micro-lens defocusing and dot matrix contrast reduction are combined, eye axis growth is doubly inhibited, dot matrix size and interval optimization is achieved, and glare and visual interference are reduced.

The invention relates to the technical field of surface treatment, and discloses an aluminum alloy surface treatment method and an aluminum alloy material.The aluminum alloy surface treatment method comprises the steps that S1, an aluminum alloy matrix is subjected to deoiling, alkali washing and electric polishing, and a pretreated aluminum alloy matrix is obtained; and S2, a porous aluminum oxide layer is formed on the surface of the pretreated aluminum alloy base body through laser combined machining, a boss dot matrix is formed at an orifice of the porous aluminum oxide layer through reverse dissolution and heterogeneous particle deposition, a composite aluminum alloy base body is obtained, and laser combined machining is combined machining of laser etching and anodic oxidation. According to the aluminum alloy surface treatment method and the aluminum alloy material, the meshing effect of pore channels and bosses is formed, surface energy and acid-base Lewis sites are regulated and controlled through component and crystalline phase heterogeneous sites, interface chemical compatibility and heat and humidity resistance stability are improved, meanwhile, pore blocking caused by a continuous film is avoided, and therefore the specific surface area, interface energy and stability are improved, and the service life of the aluminum alloy material is prolonged. And the aluminum alloy surface with high bonding strength is formed.

The application discloses a low-frequency broadband seismic metamaterial filled with a five-mode dot array core and a design method thereof. The seismic metamaterial is composed of a five-mode dot array core, a concrete hollow pipe and an outermost soil layer. The five-mode dot array core is composed of a plurality of hexagonal crystal system units arranged periodically. The hexagonal crystal system unit is connected by an axial direction and is obtained by space structure conversion. The hexagonal crystal system unit is arranged periodically to form a three-dimensional dot array core structure composed of a plurality of hexagonal crystal system units. The low-frequency broadband seismic metamaterial filled with the five-mode dot array core can form a low-frequency broadband in a target frequency band. The seismic metamaterial is arranged in a vibration isolation area underground. When a seismic Rayleigh wave propagates to the area, the wave energy is significantly weakened under the action of a forbidden band, so that effective isolation and attenuation of the Rayleigh wave can be realized under the condition of a limited space.

The application provides a distortion model calibration method, a video perspective method and a head-mounted display device, and is used for improving the video perspective effect of a low-cost optical machine. The method comprises the following steps: capturing each first feature point displayed in the head-mounted display device by using a camera to obtain a first dot array image; performing feature point matching according to the image position coordinates of each second feature point obtained by feature extraction on the first dot array image and the position coordinates of each first feature point in a micro display to obtain each feature point matching pair; calibrating a distortion model of the optical machine by using the three-dimensional position coordinates of the first feature point in the lens of the optical machine and the image position coordinates of the second feature point in each feature point matching pair to obtain a calibrated distortion model; the distortion model is a radial distortion parameter added in an augmented Brown model, and the three-dimensional position coordinates of any first feature point in the lens of the optical machine are obtained based on the position coordinates of the first feature point in the micro display.

The application discloses a glass substrate hole modification method and an integrated waveguide manufacturing method, and comprises the following steps: focusing a laser focus on one side of a glass substrate close to the bottom surface thereof; controlling the laser focus to perform annular scanning along the outer contour of a preset hole to form a closed modification ring; controlling the laser focus to perform point-by-point scanning with a preset dot array interval in the internal area surrounded by the modification ring to form an array distributed modification dot array; and making the laser energy density of the annular cutting area of the modification ring lower than the laser energy density of the filling area of the modification dot array. The application can assist in high-precision preparation of a through hole and a blind hole with a vertical sidewall and a flat bottom on a glass substrate, thereby effectively improving the performance of a millimeter wave slow wave passive device and reducing the cost.

The invention discloses a preparation method of an addressable disc ultramicro electrode array for electrochemical imaging, which comprises the following steps of: 1, preparing a nanowire array by using an ultrathin slicing machine as processing equipment and a silicon wafer with a micron groove array structure as a template; 2, transferring the nanowire array to a silicon wafer, performing three-dimensional alignment on a molybdenum mask plate with a lead pattern and the nanowire array, and realizing lap joint of a lead and the nanowire array and preparation of the lead by combining a physical vapor deposition method; 3, resin is poured on the silicon wafer for normal-temperature curing, and the pattern is transferred to the resin; 4, macroscopic wire lap joint and packaging are carried out, a resin block with an embedded array structure is obtained, the end face is trimmed through an ultra-thin slicing machine, the dot array is exposed, and preparation of the addressable disc ultramicro electrode array is completed. According to the method, the addressable disc ultramicro electrode array which is high in consistency, high in spatial resolution and capable of being expanded at will can be prepared simply and efficiently at low cost.

The invention discloses a method for preparing 18Ni300 breathable die steel through a selective laser melting forming lattice structure method, 18Ni300 alloy is used as a raw material, the advantage that a complex shape can be formed through the selective laser melting technology is utilized, three lattice structure models of BCC, FCC and FBCCZ are designed, optimized selective laser melting forming technological parameters are combined, and the 18Ni300 breathable die steel is prepared. The method comprises the following steps: preparing a 18Ni300 breathable die steel sample with a regular porous structure, and screening out a collaborative optimal process scheme of breathability and mechanical property by combining multi-dimensional performance verification; the performance requirements of different regions are met, and the problem that air permeability and mechanical properties are difficult to be compatible in the prior art is solved.

The invention relates to the technical field of ship paint spraying, in particular to a paint surface texturing and cleaning device. The paint surface texturing cleaning device comprises a shell, a laser light source, a collimating head, a Powell prism, a plano-convex cylindrical surface focusing lens, a micro-cylindrical lens array and a mode switching module. A collimating head, a Powell prism, a plano-convex cylindrical focusing lens and a micro-cylindrical lens array are sequentially arranged in the shell at intervals in the transmission direction of laser emitted by the laser light source, and the central axis of the Powell prism and the central axis of the plano-convex cylindrical focusing lens coincide with the optical axis of the laser. The micro-cylindrical lens array is movably arranged in the shell and provided with a texturing position and a cleaning position, and the mode switching module is in transmission connection with the micro-cylindrical lens array so as to drive the micro-cylindrical lens array to move to the texturing position or the cleaning position. The paint surface texturing and cleaning device can generate one-dimensional dot matrix light spots equally divided by total laser energy, the uniform and non-ablation paint surface texturing effect is achieved, and meanwhile switching between the paint surface texturing mode and the paint removing / rust removing operation mode is achieved.

The present application belongs to the field of mechanical design, and particularly relates to a method for extracting a center line of a rod body based on internal point array information of a three-dimensional model. The method comprises the following steps: S1, extracting an outer surface and a bounding box information of a rod body model with a cross-sectional radius R of the rod body; S2, generating an initial point array in the bounding box; S3, extracting a point inside the rod body model and a nearest point of the point to the outer surface of the rod body model; S4, calculating coordinates of a center O of a rod body cross section corresponding to each point in a point array sub-set extracted in step S3; and S5, performing curve fitting on all points O to obtain a center line of the rod body model. The present application can realize fast extraction of a center line of a non-straight rod body three-dimensional model, and is particularly suitable for application in a rod body design environment with a relatively complex shape.

The application discloses a kind of based on lateral light guide and spatial perception neural network's visual haptics deformation reconstruction device and its reconstruction method, reconstruction device includes: micro camera;Sleeve is configured to be covered outside micro camera, multiple mounting holes are formed on the barrel wall of sleeve;Light guide plate has reflecting surface;Elastic component has reflective layer;Multiple optical fibers are located in corresponding mounting hole;The light emitted by optical fiber is reflected to elastic component by reflecting surface, and irradiates reflective layer;When elastic component contacts target, reflective layer is deformed, micro camera is configured to take pictures to reflective layer and obtain haptic image, so as to determine the haptic information of target according to haptic image.Multiple optical fibers emit axial light under the action of light guide plate to form multiple lateral light, that is, annular discrete dot array light source is formed, the uniformity of light in elastic component is improved, so as to facilitate to improve the accuracy of three-dimensional deformation reconstruction.

The application relates to the technical field of acoustic surface wave gyroscopes, in particular to a high-sensitivity MEMS acoustic surface wave gyroscope chip with enhanced acoustic wave of imitated swiftlets, which comprises a silicon substrate, the upper surface of the silicon substrate is provided with a piezoelectric substrate, the upper surface of the piezoelectric substrate is provided with a delay line, the delay line comprises a metal dot array, two interdigital transducers and two reflectors, the two interdigital transducers are respectively located on the left and right sides of the metal dot array, and the two reflectors are respectively located on the front and back sides of the metal dot array. The application effectively solves the problem of low detection sensitivity of the existing acoustic surface wave gyroscope and is suitable for the fields of aerospace, navigation, robots, automobiles and the like.

The application provides a kind of fatigue damage analysis method of additive manufacturing lattice structure considering roughness influence, comprising: carrying out fatigue test on lattice structure test piece, and obtaining fatigue life test data of lattice structure test piece;And based on fatigue life test data, damage evolution equation is constructed;Based on the undulating form of the surface of lattice structure test piece, the surface roughness influence factor of lattice structure test piece is obtained;Surface roughness influence factor is introduced into damage evolution equation, and the damage evolution equation considering surface roughness is obtained;Based on finite element software, the finite element model of lattice structure test piece is constructed, the fatigue life prediction of lattice structure test piece is carried out in combination with the damage evolution equation considering surface roughness, and the fatigue damage analysis of additive manufacturing lattice structure considering roughness influence is completed.The technical scheme of the application can reduce repeated test, reduce calculation cost, and also can provide reference for the design of lattice structure.

The embodiment of the invention discloses a binocular calibration precision optimization method and device and a computer readable storage medium, which are used for improving the stability of a binocular vision system. The method comprises the steps that when preset monitoring conditions are met, a binocular vision system is controlled to shoot a target display screen, geometric pose correction is carried out on images shot by a front-view camera and an oblique-view camera respectively, a first dot matrix image and a second dot matrix image are obtained, the first dot matrix image corresponds to the oblique-view camera, and the second dot matrix image corresponds to the oblique-view camera; the second dot matrix image corresponds to the front-view camera; performing coordinate set extraction on the first dot matrix image and the second dot matrix image to obtain a first dot matrix coordinate set and a second dot matrix coordinate set; transforming the first dot matrix coordinate set through a pre-stored projection transformation matrix to obtain a third dot matrix coordinate set; calculating a mapping precision error between the second dot matrix coordinate set and the third dot matrix coordinate set; and determining whether to re-calibrate the binocular vision system according to the mapping precision error.

Provided are a spatial transcriptomics chip, a preparation method therefor and the use thereof. The method comprises the following steps: cleaning a substrate, soaking same in a hydrophobic silane solution, then using a strongly corrosive reagent or a laser to etch same to form a dot array, and then sequentially adding a Spacer reagent and a Unylinker molecule for treatment; performing 3D inkjet printing or using a photochemical in-situ synthesis device to synthesize on the substrate a DNA sequence for spatial transcriptomics analysis; capturing the DNA sequence on the DNA array chip by using a gel or shrink film to obtain a gel layer or shrink film containing a captured sequence dot array; scaling down same at an equal proportion; and immobilizing the scaled-down gel layer or shrink film to the substrate, so as to obtain the spatial transcriptomics chip having high spatial resolution and high detection sensitivity. By means of the sequence dot array scaling-down process, the spatial resolution and detection sensitivity in spatial transcriptomics analysis are improved.

The application relates to the field of shoemaking, in particular to a design method of a shell-like cross-lamella dot array structure and a shoe sole design method; a cubic envelope space is constructed, the envelope space is equally spaced in the length direction to divide into a plurality of design spaces; a three-dimensional structure with the characteristics of cross-layer and interlayer connection is designed in the design space, and the orientation difference is formed through interlayer rotation in the multi-layer array process, the same design is carried out on each design space, so that the shell-like dot array unit with the characteristics of layering and structural anisotropy is constructed; and stress redistribution and crack delay are realized in the bending process of the structure, so that the fracture toughness of the structure is improved.

The invention discloses an OSD (On Screen Display) menu display method, which comprises the following steps of: in response to a menu updating instruction, obtaining current character dot matrixes to be displayed in different unit areas on a screen; for the current character dot matrix of any row, determining a non-idle storage unit for storing the historical character dot matrix of the row in the RAM; if the number of the current character dot matrixes in the row is not larger than that of the non-idle storage units, the non-idle storage units are covered with the current character dot matrixes in the row, and the non-idle storage units which are not covered are updated to be idle storage units; otherwise, covering a non-idle storage unit by using the current character dot matrix of the row; searching an idle storage unit, distributing a storage unit for the remaining character dot matrix of the current row, and updating the storage unit as a non-idle storage unit; and reading the character dot matrix of the non-idle storage unit, and displaying the character dot matrix in a corresponding unit area on the screen. Therefore, the problems that the utilization rate of an existing RAM is low, and when the reserved space is not enough, a blurred screen appears in menu display are solved.

The present invention provides a liquid film reconstruction-based super uniform distribution spiral sheet liquid distributor, and relates to the technical field of chemical equipment, the device mainly comprises a distribution disc, a flow guide sleeve, a convergence hopper, a flow guide rod with a variable cross-section spiral blade and reconstruction sawteeth, and an independent riser with a reverse folding edge shielding cap, the core distribution mechanism depends on the variable cross-section helical blades, the gravitational potential energy of liquid is converted into rotation kinetic energy through the design that the width is gradually increased from top to bottom and the screw pitch is gradually reduced, so that a liquid film is stably spread from narrow to wide and from thick to thin under the driving of centrifugal force, and finally physical tearing is carried out through reconstructed sawteeth at the edges of the blades. A continuous liquid film is converted into a high-density fine equivalent dot matrix droplet array, the problems that a traditional distributor is insufficient in radial covering force and limited in distribution point density are solved, meanwhile, a shielding cap and a reverse folding edge are arranged at the top of a riser, liquid is effectively prevented from climbing on a wall by means of physical breakpoints, and entrainment and gas-liquid momentum interference under high loads are prevented.

This invention belongs to the field of semiconductor manufacturing technology, and relates to a diamond-silicon carbide composite substrate, its preparation method, and its application. The preparation method includes the following steps: coating a silicon substrate with SiC quantum dot sol and annealing it with pulsed laser to obtain a nucleation dot array; sequentially depositing a gradient buffer layer, a 3C-SiC thin film, and a diamond layer; and polishing the surface of the 3C-SiC thin film. The gradient buffer layer is a SiGeC gradient buffer layer with a thickness of 5-10 nm; the 3C-SiC thin film has a thickness of 0.5-5 μm. This invention can achieve stable composite formation of an ultrathin SiC layer with uniform thickness and a smooth surface with diamond while ensuring interfacial bonding strength and structural integrity, which is beneficial for the development and application of high-performance diamond-silicon carbide composite substrates.