54results about How to "Does not affect extraction" patented technology

The invention provides a method for extracting lithium from salt lake brine, comprising the following steps: 1) mixing organic phase composed of salt lake brine, extracting agent and extracting medium with synergist, extracting the mixture and collecting the organic phase; 2) mixing the organic phase in step 1 with hydrochloric acid solution and carrying out back-extraction on the mixture, collecting aqueous phase to obtain aqueous solution of Lithium-ion; the step is characterized in that the extracting medium is hydrophobic ionic liquid. Compared with the traditional method for extracting lithium from salt lake brine with solvent gasoline as the medium, the method of the invention employs green and environmental-friendly ionic liquid as the medium; as a result, lithium salt extraction efficiency is improved, back-extraction acidity is lowered, what is more important is that environmental pollution and equipment corrosion due to use of a great deal of volatile organic solvent and high-concentration hydrochloric acid are avoided. In addition, the organic phase of the invention features fine cyclic applicability, thus greatly reducing production cost for extracting lithium from the salt lake brine.

The invention relates to a production method of low-rack coal degradation liquid. Low-rack coal used as a raw material is added with 2-10% of mixed oxidizing agent, 0.1-0.6% of negative catalyst and 0.2-0.5% of stabilizer to oxidize and degrade the low-rank coal, and the mixture is subjected to oxidation reaction, centrifugalization, filtering and vacuum rotating evaporation to obtain colourless low-rack coal degradation liquid. The colourless low-rack coal degradation liquid used as a new product has good effects in promoting growth and development of crops, increasing crop output, improving the crop quality, improving the seed germination rate, improving the plant salt resistance and the like, and is a multi-functional crop conditioner (plant conditioner); the process is simple, energy-saving and environment-friendly, and high in efficiency; one set of equipment can produce the low-rack coal degradation liquid and fulvic acid simultaneously, and the low-rack coal degradation liquid is safe and non-toxic, has strong appetency to plants, can take effect rapidly and is convenient for use.

The invention relates to a lavandula angustifolia Mill. cutting propagation method. The invention relates to a cutting propagation method adopting the annual plants of lavandula angustifolia Mill. as mother ears, aiming at the present problems of low setting percentage, long seed germination and raised seedling propagation time, low survival percentage and the like of lavandula angustifolia Mill. The method comprises the steps of cutting medium preparation, cutting selection, rooting agent treatment, cutting, cutting culture conditions, management after cutting, transplanting and land management, wherein the cutting medium is optimized and the cuttings are subjected to single-cup single-plant cutting. The method has the following beneficial effects that the rooting percentage of the cultured cutting seedlings reaches 91%; the root systems are flourishing; and the transplanting survival percentage reaches 100%. Compared with lavandula angustifolia Mill. tissue culture and rapid propagation methods, the method has the advantages of simpleness in operation, small amount of labor, high growth speed, high rooting percentage, high transplanting survival percentage, robust seedlings and the like and has higher popularization and application values and vast development prospect.

The invention relates to a method for preparing lithium carbonate by using high boric bittern saturated solution, which is mainly used in the production of lithium carbonate prepared by using deep marine bittern rich in potassium and comprises the process flow that the high boric bittern saturated solution is prepared into a lithium carbonate product through calcium and magnesium removal, evaporation and concentration, boron removal, lithium settlement and washing. The method has the advantages of simple and feasible process, low equipment investment, low production cost, high yield, better economic and social benefits and the like, and can reclaim boron at the same time; and the high-content boron does not influence the extraction of lithium.

The invention discloses a digital picture watermark embedding and detecting method and a device thereof for improving the capacity of a digital picture for resisting geometric attacks in the transmission process. The digital picture watermark embedding method comprises the steps that data information needing to be embedded is generated into at least one watermark sub-block, and synchronous templates corresponding to the watermark sub-blocks are constructed; areas to be embedded corresponding to the watermark sub-blocks are determined in the digital picture; the alternating-current coefficientsequence of each image sub-block in each embedded area on a discrete cosine transformation (DCT) domain is obtained; and according to the information in each watermark sub-block and the information of the corresponding position in the corresponding synchronous template, the corresponding alternating-current coefficient in the corresponding alternating-current coefficient sequence is revised so asto realize the embedding of the watermark and the synchronous template.

The invention discloses an automatic detection method and system for a point switch notch and a storage medium, and the method enables a template matching algorithm and a gray integral projection algorithm to be applied to the real-time detection of the notch, and achieves the accurate and visual detection of a notch value through the analysis of a real-time photographed point switch notch image or a real-time photographed point switch notch video. Actual tests show that the algorithm used in the invention is suitable for point switch notch detection, the change of the illumination intensity in the image acquisition process does not influence the detection result, and the noise existing in the acquired image does not influence the extraction of the notch detection line, so the algorithm has strong robustness. Starting from the algorithm, the reference line of the gap detection adopts an automatic identification mode, and does not need to be manually delimited; according to the invention, the problem that reference lines need to be manually delimited at the notch fixing ends of a plurality of point switches respectively is solved, the calibration work which must be performed due toinaccurate manual reference line delimiting is avoided, the actual working efficiency is greatly improved, and the intelligent level of notch detection is improved.

The method discloses a method for acoustically monitoring blockage of a gas extraction pipeline. An acoustic wave sensor is arranged in the bending segment of the gas extraction pipeline to receive acoustic waves of friction between accumulated water and coal slag in the pipeline and the pipeline wall, acoustic wave signal strength is analyzed and processed through a monitoring host, then, the acoustic wave signal strength is compared to precisely find out the blockage area of the extraction pipeline, and the blockage level of the accumulated water and the coal slag in the pipeline is obtained, so that monitoring of the blockage condition of the points nearby the bending segment is achieved; the method for acoustically monitoring blockage of the gas extraction pipeline in a portable and passive manner can detect the blockage degree of the extraction pipeline in real time, the pipeline dredging work can be rapidly guided, and therefore the gas extraction efficiency is improved; and the method is not affected by the pipeline material, the blockage point can be precisely positioned, when the acoustic wave sensor is mounted, the extraction pipeline does not need to be dismounted, normal gas extraction work is not affected, and the extremely high field practical value is achieved.

The invention discloses a nucleic acid preserving fluid and a preparation method and an application thereof, and belongs to the technical field of biological products. The nucleic acid preserving fluid disclosed by the invention has lower cost of raw materials, fewer components, simple and quick preparation, accurately controlled dosages of additives and reduction of production cost. The nucleic acid preserving fluid can stably preserve nucleic acid samples for 15 days under the transportation condition of 0-50 DEG C without affecting subsequent DNA / RNA extraction and detection experiments ofthe samples, and has a good preservation effect. The nucleic acid preserving fluid can be stably preserved for 2 years under the transportation condition of 0-50 DEG C without affecting subsequent DNA / RNA extraction and detection experiments of the samples, and has long preservation time.

The invention discloses a hydrogen peroxide extraction process which comprises the following contents: countercurrent extraction separation of oxidized liquid is carried out in an extraction column, wherein the oxidized liquid is obtained in a hydrogen peroxide production process by an anthraquinone method; the extraction column is a plate column, and an operating fluid extraction pipeline is disposed below at least one column plate; the extracted operating fluid is circulated to the lower part of the extraction column, and is subjected to extraction separation with the oxidized liquid. The process has the advantages of good extraction effect, large adjustable range of device load, stable operation, no liability to material deposition, and suitability for industrial application.

The invention provides a tobacco online weighing device which comprises a belt conveying device I, a belt conveying device II, a transport weighing device, a PLC control system and a computer. The belt conveying device I is provided with a photoelectric sensor and a travel switch. The PLC control system controls the working of a servo motor. When the photoelectric sensor detects an electric signal, the photoelectric sensor sends a command to the servo motor to control the servo motor to start working to drive the transport weighing device to move to the direction of the belt conveying device II, when the transport weighing device returns and touches the travel switch, the servo motor stop working, and a strain type weighing sensor transmits detected data to the computer at the same time. According to the device, through using a crank slider mechanism, the tobacco on the belt conveying device I is transported to the belt conveying device II in the process of weighing, the weighing is completed in the conveying process, the online real-time weighing of the tobacco is realized, the efficiency is improved, and the extraction of the subsequent characteristic parameters in the belt conveying device II is not affected.

The invention discloses a method for inactivating virus in source plasma of a blood product. The method disclosed by the invention comprises the following steps: (1), mixing plasma; (2), stirring by adding a CaCl2 liquid, filtering and clarifying by using a filter element, thus obtaining a filtered liquid; (3), adding a mixed liquid of tween-80 and Tri-n-butyl phosphate (TNBP) so that the final volume percentages of tween-80 and TNBP are (1+ / -0.3)% and (0.3+ / -0.1)% respectively, keeping the temperature of reaction liquid at 24+ / -2 DEG C, and keeping the constant temperature for 4-6 h; (4), adding vegetable oil so that the final volume percentage of vegetable oil is (5+ / -2)%, and reducing the temperature of the reaction liquid to 16+ / -2 DEG C; (5), stirring and standing; and (6), extracting, and eliminating an oil phase, thus obtaining a liquid phase. By means of the method disclosed by the invention, the safety of the source plasma is greatly increased; and the secondary pollution rate is reduced.

The invention discloses a cyanobacteria cell crushing method and a cyanobacteria cell crushing device. The cyanobacteria cell crushing method comprises the following steps: (1) centrifuging an alga liquid of cyanobacteria cells to be crushed, and discarding the supernate to obtain precipitate; and (2) adding emery into the precipitate obtained in the step (1). The experiment shows that the cyanobacteria cell crushing method disclosed by the invention is efficient and practical, is not only applicable to single cell cyanophyta, but also applicable to filiform cyanophyta, the time for crushing the cyanobacteria cells in a laboratory is shortened to be six minutes from hours, the cell crushing rate is increased to be more than 95% from the original 65%, and moreover later product extraction and product activity are not affected. Due to adoption of the method, difficulty of cell crushing in the fields of laboratory investigation and industrial application of cyanophyta is solved, and the cyanophyta research and development efficiency and the production efficiency of natural cyanophyta products are greatly improved.

The invention belongs to the field of non-ferrous metal wet metallurgy, and particularly provides an application method of trialkyl naphthalene sulfonic acid. The trialkyl naphthalene sulfonic acid isadded into dialkyl naphthalene sulfonic acid and pyridine carboxylic acid so as to accelerate an extraction and phase separation speed. In addition, the invention further discloses a synergistic extraction agent containing the trialkyl naphthalene sulfonic acid. The synergistic extraction agent is prepared from the trialkyl naphthalene sulfonic acid, the dialkyl naphthalene sulfonic acid and thepyridine carboxylic acid. The invention further comprises preparation of the synergistic extraction agent, and application of the synergistic extraction agent in directly extracting nickel-cobalt froma multi-metal acid solution containing Ni2+, Co2+, Fe3+, Ca2+, Mg2+ and the like at the same time. The long-carbon-chain trialkyl naphthalene sulfonic acid is added into the synergistic extraction agent containing the dialkyl naphthalene sulfonic acid and pyridine carboxylic acid, so that the extraction and phase separation speed of the extraction agent can be remarkably improved, the extractionand clarification speed meets the requirement on an industrial design of a mixer-settler, the extraction rate of the nickel-cobalt directly extracted from the multi-metal acid solution containing Ni2+, Co2+, Fe3+, Ca2+, Mg2+ and the like at the same time cannot be influenced, and a removal effect on impurities such as Fe3+, Ca2+, Mg2+ cannot be influenced.

The invention relates to a digital video watermarking method based on one-dimensional wavelet transform, belonging to the technical fields of video signal processing and multimedia signal processing, and comprising the steps: 1) watermarked image preprocessing, adopting a scrambling conversion technique to disarrange the space positions of pixels, leading videos loaded with watermark to have shearing capability, and strengthening the security of a watermarking algorithm; 2) one-dimensional wavelet transform, taking two continuous frames from an original video sequence to carry out one-dimensional wavelet transform; 3) embedding watermark, embedding watermark into each branch block with low frequency frame obtained in the step (1), and realizing the real-time embedding of the watermark; and 4) detecting watermark, taking two continuous frames from the watermark to be detected to carry out one-dimensional wavelet transform, carrying out block dividing operation to the obtained low frequency frames, and conducting watermark extraction according to an embedded algorithm. In the invention, the complexity of embedding and extracting watermarks is greatly reduced, and the embedding and the extraction of the watermarks can be carried out in real time, the efficiency is improved, and simultaneously the attack to the frame rearrangement has obvious robustness.

The method discloses a method for acoustically monitoring blockage of a gas extraction pipeline. An acoustic wave sensor is arranged in the bending segment of the gas extraction pipeline to receive acoustic waves of friction between accumulated water and coal slag in the pipeline and the pipeline wall, acoustic wave signal strength is analyzed and processed through a monitoring host, then, the acoustic wave signal strength is compared to precisely find out the blockage area of the extraction pipeline, and the blockage level of the accumulated water and the coal slag in the pipeline is obtained, so that monitoring of the blockage condition of the points nearby the bending segment is achieved; the method for acoustically monitoring blockage of the gas extraction pipeline in a portable and passive manner can detect the blockage degree of the extraction pipeline in real time, the pipeline dredging work can be rapidly guided, and therefore the gas extraction efficiency is improved; and the method is not affected by the pipeline material, the blockage point can be precisely positioned, when the acoustic wave sensor is mounted, the extraction pipeline does not need to be dismounted, normal gas extraction work is not affected, and the extremely high field practical value is achieved.

The invention discloses a rare earth mine sediment and roasting extracting process. The rare earth mine sediment and roasting extracting process comprises the following steps of collecting leachate; pretreating the leachate; adjusting the pH value of the leachate, specifically, the pH value of the leachate is adjusted to 5.1-5.2; filtering and purifying the leachate, specifically, the leachate obtained after pH value adjustment is subjected to vacuum filtration and cleaning, and a cleaning solution and purification residues are obtained; adjusting the temperature of the cleaning solution to 30-40 DEG C; adding flocculants into the cleaning solution, and stirring the cleaning solution evenly; adjusting the pH value of the cleaning solution for dynamic precipitation, specifically, the pH value of the cleaning solution is adjusted to 9-11, the increasing speed of the pH value is controlled to be 1-2 / h, dynamic precipitation is conducted, vacuum filtration and cleaning are conducted afterwards, and precipitation residues and supernatant are obtained; and roasting the precipitation residues, specifically, the obtained precipitation residues are put into a roasting furnace to be roasted,and the materials obtained after roasting are rare earth element oxides. According to the rare earth mine sediment and roasting extracting process, the flocculants are added in the precipitation process for cross-linking reaction, the precipitation speed is increased, and the precipitation efficiency is improved. As the organic flocculants are added, the organic flocculants burn and volatilize inthe roasting process, and extraction of the rare earth is not affected.

The invention relates to a medical separation and extraction device, which comprises a first container, a second container and a third container, wherein the first container comprises a first outer wall, a first cavity and at least a communication opening penetrating through the first outer wall, the second container comprises a second outer wall, a second adjusting member and a second cavity, thethird container comprises a third outer wall, a third adjusting member and a third cavity, the volumes of the second cavity and the third cavity are correspondingly changed along with the sliding ofthe second adjusting member and the third adjusting member respectively, the second cavity and the third cavity can be communicated with the first cavity respectively through the communication opening, the third container is detachably connected to the first container, and the second container is provided with a port capable of directly extracting blood through an injection needle. According to the medical separation and extraction device of the invention, the whole sucking, separation and extraction process can be realized by only adopting the device under the conditions of liquid collectionwith no use of additional injection needle and sucking storage of the extract, so that the operation is simple, and the pollution risk is reduced.

The invention relates to a light-emitting semiconductor and a preparation method thereof. The light-emitting semiconductor comprises a substrate, and a light-emitting structure, a current expansion layer, a dielectric layer and a reflecting layer which are sequentially laminated on the substrate along the direction close to the substrate, and is characterized in that the dielectric layer is provided with a plurality of first through holes and a circle of groove; the first through holes and the groove penetrate through the dielectric layer; the groove circumferentially extends along the boundary of a closed pattern; the groove surrounds the plurality of first through holes in the boundary of the closed pattern; and the periphery of the reflecting layer falls in the groove. According to the invention, a metal layer can be prevented from gathering at the periphery of the photoresist by using the groove, and breakage after subsequent film coverage is avoided; and in addition, the groove can play a conduction role like the first through holes, does not influence the overall thickness of the insulating layer, can enable the insulating layer to keep the optimal thickness, does not influence the extraction of brightness, and does not influence the conduction of an electrode.

The invention relates to a high-value utilization and separation method for oil-producing microorganism energy microalgae. The method comprises the following steps of: 1, sequentially treating collected microalga wet thalli by using hot water and centrifuging to obtain supernate A and precipitates A; 2, sequentially adding enzyme into the precipitates A and centrifuging to obtain supernate B and precipitates B; 3, mixing the supernate A and the supernate B and concentrating, adding cold ethanol at 4 DEG C, standing for more than 12 hours, and filtering mixture to obtain crude polysaccharide precipitates; and 4, adding water into the crude polysaccharide precipitates obtained in the step 3, dissolving, deproteinizing, separating to obtain protein precipitates and a deproteinized polysaccharide solution, performing freeze drying on protein precipitates or drying the protein precipitates to obtain crude protein products, decolorizing the deproteinized polysaccharide solution to obtain refined polysaccharide, and treating the precipitates B for multiple times to obtain uranidin, chlorophyllide, high-protein feed and grease.

An intelligent cotton picker system based on computer vision technology, including: an image acquisition module, a data storage module, an image processing module, a control module and an execution module; Original image; the data storage module stores the original image through the stack operation, and provides the original image data to the image processing module through the stack operation; the image processing module obtains the cotton spatial coordinate information in the original image by extracting information from the original image set, and select the spatial position coordinates nearest to the binocular camera from the spatial coordinate information set as the target cotton position; the control module achieves the target cotton position by controlling the execution module according to the target cotton position; the execution module is used to perform the cotton picking action, and The picked cotton is put into the cotton storage box. The invention reduces the complexity of the control program and improves the cotton picking efficiency.

The invention belongs to the technical field of economic forest tree seedling raising and particularly relates to a method for sterile cottage and rapid seedling propagation and raising of Australian melaleuca alternifolia. The method includes the following steps of (1) selection and processing of an explant material, (2) establishment of sterile strains for the first time, (3) multiplication culture, (4) rooting culture and (5) transplantation. The method utilizes a cutting technology and also utilizes a tissue culture technology, and therefore the method is high in cutting efficiency and is not affected by the environment. The source problem of cuttage branches is solved through self in-vitro propagation without forest tree consumption, tree growth and essential oil extraction are not influenced, and meanwhile the propagation efficiency is improved.

The invention provides a defoamer composition for pharmaceutical production, which is prepared from the following components in parts by mass: 20-60 parts of dimethyl silicone oil, 20-30 parts of polymethylsiloxane, fluorosilicone oil 2‑10 parts, 4‑8 parts of thickener, 10‑15 parts of emulsifier, 10‑100 parts of deionized water. The defoamer composition can efficiently eliminate and suppress foaming, has stable performance, less dosage, is non-toxic and environment-friendly.

The invention discloses fecal sample stabilization fluid as well as a preparation method and an application method thereof. The fecal sample stabilization fluid comprises a cell buffer component, an ion-chelated DNA stabilization component, and a microorganism proliferation prevention component; the cell buffer component is prepared by blending trihydroxymethyl aminomethane with sodium chloride; the ion-chelated DNA stabilization component is ethylenediaminetetraacetic acid; and the microorganism proliferation prevention component is prepared by blending an ammonium persulphate solution with water. The preparation method of the fecal sample stabilization fluid comprises the following steps: preparing a trihydroxymethyl aminomethane-hydrochloric acid solution; preparing an ethylenediaminetetraacetic acid solution; preparing a sodium chloride solution; and then, dissolving the ammonium persulphate in the water, adding the trihydroxymethyl aminomethane-hydrochloric acid solution, the ethylenediaminetetraacetic acid solution and the sodium chloride solution, and carrying out mixing so as to obtain a finished product. The application method of the fecal sample stabilization fluid comprises the following steps: adding a fecal sample into the fecal sample stabilization fluid, wherein the volume of the fecal sample is equal to the volume of the fecal sample stabilization fluid, and carrying out uniform mixing so as to obtain a mixture; and then, storing the mixture with the temperature controlled within 37 DEG C. The fecal sample stabilization fluid is capable of effectively maintaining stability of tested components, and enables storage of fecal samples for a long period of time.

The invention provides an extraction method, a line selection method and system for a small-current grounding fault quantity of a transformer. According to the three-phase current at the power supplyof the transformer, the load current of each phase of the load side of the transformer is calculated, the load side fault quantity of the transformer is obtained by eliminating the load current in thephase current of the load side of the transformer through the power side current of the transformer, the fault quantity of the transformer of a low-current grounding system can be extracted more effectively, and the low-current grounding line selection sensitivity is improved.

The invention relates to an emergency treatment method of chlorine effusion during producing a beta-hydroxyl-beta-methyl butyric acid. The method for emergently treating the chlorine effusion during the production of the beta-hydroxyl-beta-methyl butyric acid and derivatives thereof by a diacetone alcolol method comprises the following steps of: once chlorine effuses, immediately stopping dropping a sulfuric acid or hydrochloric acid solution, immediately adding sodium bisulfite, stirring for 0.5-1 hour; and then continuing dropping the sulfuric acid or the hydrochloric acid solution till a complete acidification, wherein the weight ratio of the sodium bisulfite to the diacetone alcolol as the raw material is 1:6-1:8. The chlorine effusion is caused by excessive sodium hypochlorite (NaOCl) aqueous solution during a haloform reaction and the chlorine is then generated by the reaction between the sodium hypochlorite and the sulfuric acid (hydrochloric acid) during the acidification. In the invention, the sodium bisulfite is used for neutralizing the excessive sodium hypochlorite, and generated sulfate and hydrochloride do not influence the extraction of HMB, thus the product quality is not influenced.

The invention relates to a production method of low-rack coal degradation liquid. Low-rack coal used as a raw material is added with 2-10% of mixed oxidizing agent, 0.1-0.6% of negative catalyst and 0.2-0.5% of stabilizer to oxidize and degrade the low-rank coal, and the mixture is subjected to oxidation reaction, centrifugalization, filtering and vacuum rotating evaporation to obtain colourless low-rack coal degradation liquid. The colourless low-rack coal degradation liquid used as a new product has good effects in promoting growth and development of crops, increasing crop output, improving the crop quality, improving the seed germination rate, improving the plant salt resistance and the like, and is a multi-functional crop conditioner (plant conditioner); the process is simple, energy-saving and environment-friendly, and high in efficiency; one set of equipment can produce the low-rack coal degradation liquid and fulvic acid simultaneously, and the low-rack coal degradation liquid is safe and non-toxic, has strong appetency to plants, can take effect rapidly and is convenient for use.

Methods and systems for preparing vinegar. The present invention proposes a method for preparing vinegar liquid. The method comprises: drenching mature vinegar grains with vinegar n times; 12, 13 or 14. The total acid content of the vinegar liquid prepared by the method is more than 4.2g / 100mL, and the total acid content in the vinegar residue is less than 0.05g / 100g, which greatly improves the extraction rate of acetic acid and avoids microbial contamination.

The invention discloses a method for preparing high-purity chlorogenic acid from stevia rebaudiana and belongs to the technical field of natural product chemicals. The method comprises the following steps: by taking stevia rebaudiana as a raw material, and water as an extraction medium, filtering and flocculating an extract liquid, purifying the extract liquid by using a polyamide resin or a polyamide-like resin, eluating with water as an eluent, and concentrating and crystallizing an eluation liquid, thereby obtaining a product that the mass content of chlorogenic acid is 98%. Meanwhile, in the process that the chlorogenic acid is purified is purified by using the resin, other collected components can be adopted to separate and extract other stevia rebaudiana polyphenol and stevioside. Tosum up, the method is capable of achieving preparation of high-purity chlorogenic acid from stevia rebaudiana as a raw material, is simple in process operation, free of organic solvent and environmental-friendly and safe, and the mass content of the chlorogenic acid in the product is up to 98% or above.

The invention relates to a light-emitting semiconductor and a preparation method thereof. The light-emitting semiconductor includes: a substrate, a light-emitting structure, a current spreading layer, a dielectric layer and a reflective layer sequentially stacked on the substrate along a direction close to the substrate, and is characterized in that, The dielectric layer is provided with a plurality of first through holes and grooves surrounding a circle, the plurality of first through holes and the grooves both penetrate the dielectric layer, the grooves extend circumferentially along the boundary of the closed figure, and the grooves surround the plurality of first through holes Set within the boundary of the closed figure, the periphery of the reflective layer falls into the groove. The present invention can use the groove to prevent the metal layer from gathering at the periphery of the photoresist, and avoid breakage after the subsequent film layer is covered; in addition, the groove can play the same conduction role as the first through hole, and does not affect the overall thickness of the insulating layer , so that the insulating layer can maintain an optimal thickness, which will neither affect the brightness extraction nor affect the electrode conduction.