38results about How to "Good light transmittance" patented technology

An epoxy resin composition for encapsulating an optical semiconductor element, which has small internal stress and also can obtain good light transmittance within a broad temperature range. An epoxy resin composition for encapsulating an optical semiconductor element comprising the following component (A): (A) an epoxy resin complex which comprises an epoxy resin as the matrix component and silicon dioxide particles (a) dispersed therein: (a) silicon dioxide particles having an average particle size of from 5 to 40 nm measured by the small angle neutron scattering (SANS).

The invention discloses a touch type baseplate, a color filtration baseplate and a touch type liquid crystal display, wherein, the color filtration baseplate comprises a baseplate, a plurality of picturized color filtration layer and a plurality of sensing serials, the baseplate has a first surface and a second surface corresponding to the first surface, the baseplate has a plurality of display blocks arrayed in arrays, a partition district is formed between display blocks, the picturized color filtration layer is correspondingly arrayed on the display blocks of the first surface, the sensing serials are arrayed on the second surface. The sensing serials form electricity insulation with each other, and each sensing serial comprises a plurality of sensing pads, a plurality of bridge connectors and a plurality of picturized conducting layers, wherein each bridge connector is connected with two adjacent sensing pads, the picturized conducting layers are stacked with the sensing pads and form an electrical connection with the sensing pads, and the picturized conducting layer corresponds with the partition area. The invention also provides the touch type liquid crystal display and the touch type baseplate.

The invention discloses graphene oxide/copper silicate composite powder, a preparation method of the composite powder and application thereof in a super-hydrophobic coating. The graphene oxide/copper silicate composite powder with a micro-nano structure on the surface comprises a core formed by flake graphene oxide and a shell layer formed by needle-like nano copper silicate, wherein the needle-like nano copper silicate is arranged on the surface of the core in an array form. The super-hydrophobic coating is prepared by the following steps: coating the surface of a base material with the graphene oxide/copper silicate composite powder with the micro-nano structure on the surface, drying, and performing fluoroalkyl silane low-surface energy treatment, thereby obtaining the product. The preparation method disclosed by the invention is mild in reaction conditions, easy to realize and excellent in process repeatability; the prepared high-transparency, self-cleaning and anticorrosive super-hydrophobic coating has a static water drop contact angle of not less than 150 degrees; the slide angle does not exceed 1 degree; and the light transmissivity is not lower than 90% in a visible-ultraviolet light wave range. The product has excellent corrosion resistance and is expected to be widely applied to the fields of automobiles, spaceflight, solar cells, articles of daily use and the like.

The invention provides a display panel and a display device. The display panel comprises a light-transmitting display area and a main display area. The main display area surrounds the light-transmitting display area. The display panel is composed of a number of rendered pixel units. Each rendered pixel unit comprises a number of first rendered pixel units in the main display area and a number of second rendered pixel units arranged in the light-transmitting display area. According to the invention, the density of the second rendered pixel units in the light-transmitting display area is reducedto acquire better light transmittance, so that the display device can acquire a better shooting effect; the second rendered pixel units in the light-transmitting display area are arranged by using traditional RGB sub-pixels; and the problem of color cast caused by pixel lowering in the light-transmitting display area is solved.

The present invention discloses a transparent sound-absorption film surface hydrophobic self-cleaning coating preparation method, wherein nanometer silica is adopted as base particles, other polymer additives are added to improve a hydrophobic effect, and a mixed slurry is sprayed onto a porous polycarbonate sound-absorption surface. The preparation method comprises the following steps: carrying out an ultrasonic cleaning treatment on a porous polycarbonate sound-absorption film, adopting silicon tetraacetate and KH-570 as raw materials to prepare modified nanometer silica particles, mixing a certain amount of polyvinylidene difluoride, N,N-dimethylformamide and butanone according to a certain ratio to prepare a polyvinylidene difluoride mixing solution, mixing a certain amount of the nanometer silica particles and the polyvinylidene difluoride mixing solution, spraying the obtained mixed solution on the porous sound-absorption surface, and drying to form the coating. The transparent sound-absorption film surface hydrophobic self-cleaning coating has a high water contact angle, has high light transmittance, and can not block a micro-pore structure of the sound-absorption surface.

The invention discloses an LED fluorescent glue that improves the uniformity of light emission. In parts by weight, the fluorescent glue consists of 1 part of packaging glue, 0.01-1 part of fluorescent powder, 0.01-0.1 part of silica-based inorganic nanoparticles, 0.01 part of ‑1 part silicone granules. Inorganic nanomaterials and silicone particles are mixed in the encapsulation glue, which reduces the sedimentation rate of the phosphor in the encapsulation glue, improves the uniformity of the phosphor distribution in the colloid, makes the white light spot more uniform, and improves the light diffusivity and transmittance. The light rate is maximized, and by changing the propagation path of the light, the light of various wavelengths is more fully mixed, and the spatial color uniformity of the light is further improved. It also provides an LED packaging method and LED that improve the uniformity of light emission, which improves the consistency of products, reduces the probability of uneven color distribution in space due to uneven distribution of phosphor powder, and improves product yield and product production. efficiency.

The invention relates to composition of a high performance organosilicon lens material for power type light-emitting diode (LED) packaging. The high performance organosilicon lens material is prepared by mixing raw materials such as organosilicon resin, epoxy modified organosilicon, a curing agent, a promoting agent and the like. The prepared material has high transmissivity and high refractive index in a wide wavelength range, and high high-temperature resistance, yellowing resistance and adhesion, and is suitable for packaging LED and devices thereof, solar cell array substrates, organic electroluminescence (EL) display elements, and serving as an optical lens, a plastic substrate for a liquid crystal display element, a substrate for a color filter, a touch tablet, a transparent panel, an optical element, an optical waveguide material and the like.

The invention relates to the technical field of gold stamping coatings, and in particular relates to a gold stamping coating and a preparation process thereof. The gold stamping coating comprises acrylic resin, an organic pigment, a metal complex dye, butanone, methyl isobutyl ketone and a dispersant. The preparation process of the gold stamping coating comprises the following steps: I, dispersing the organic pigment into the acrylic resin to obtain a pigment dispersion; II, uniformly mixing butanone and methyl isobutyl ketone; III, slowly adding the pigment dispersion into a mixed solvent in a container while stirring at a low speed, and increasing the stirring speed while adding to obtain first color paste; IV, adding the metal complex dye into a mixed solvent to obtain second color paste; V, mixing the first color paste and the second color paste, and stirring uniformly to obtain third color paste; VI, adding the third color paste and the dispersant into the acrylic resin, and stirring uniformly to obtain the gold stamping coating. The gold stamping coating has the advantage of high solvent resistance, and can be used for increasing the transmittance of a gold stamping product.

The invention relates to an epikote that can encapsulate the element of the optical semiconductor. The epikote includes (A) epikote (B)hardener(C)hard accelerator. The invention has the high transmissivity and low hygroscopic degree. It could resist the UV radiation and its colour is not changed under the long heating. It is specially used for the elements of blue and white optical semiconductor.

The invention relates to optical transparent adhesive and in particular relates to an organosilicon material OCA as well as a preparation method and application thereof. The organosilicon material OCA comprises the following components by mass percent: 30-70% of (methyl) acrylate terminated polysiloxane, 5-30% of MQ silicon resin, 0-30% of silane coupling agent containing methylacryloyloxypropyl, 0.5-5% of photoinitiator and 0-5% of oxygen scavenging agent. The organosilicon material OCA has the advantages of high-temperature resistance, low yellowing probability, good light transmittance (greater than 94%) and the like; meanwhile, the preparation method and application are easy and quick to operate, so that the organosilicon material OCA has a good industrial popularization prospect.

The invention discloses a preparation method of a flexible display substrate material. The method comprises the three steps as follows: 1) preparing a membrane from acetylation nanofibrillar cellulose; 2) impregnating the membrane in acrylic resin under negative pressure; 3) curing a composite under ultraviolet light to complete preparation of the flexible display substrate material. The preparation method has the advantages that the preparation method of the flexible display substrate material is environment-friendly, and the flexible display substrate material is endowed with better light transmittance, thermal properties, flexibility and surface flatness.

The invention discloses a hydrogel eye drop carrier containing polymer micelle and a preparation method of the hydrogel eye drop carrier. The carrier is prepared by mixing polymer micelle liquid which consists of polyethylene glycol, polyacrylic acid and cyclodextrin with monomer hydroxyethyl methylacrylate and choline phosphate and then performing polymerization. The preparation method comprises the following steps: mixing and stirring a cyclodextrin aqueous solution, a polyethylene glycol aqueous solution and a polyacrylic acid aqueous solution, standing, then performing dialysis to obtain the polymer micelle liquid, mixing monomer hydroxyethyl methylacrylate and choline phosphate with the polymer micelle liquid, and then performing polymerization and demolding to obtain the hydrogel eye drop carrier. The novel hydrogel provided by the invention has good oxygen permeability and drug controlled release capability, the performance of the hydrogel meets requirements of a corneal contact lens, and the hydrogel can be used for controlling release of an eye drop, and has great social and economic benefits.

The invention discloses a biodegradable antibacterial plastic. The biodegradable antibacterial plastic comprises the following raw materials: by weight, 60-70 parts of polyether sulfone resin, 10-20 parts of a modified resin, 20-35 of starch, 1-3 parts of a silane coupling agent, 1-5 parts of an antibacterial agent, 5-10 parts of a compatilizer, 1-2 parts of glycerol, 2-4 parts of a degrading promoter, 1-2 parts of carbon black, and 0.1-0.5 part of montan wax. The provided biodegradable antibacterial plastic has high degradability, good light transmittance, good tensile properties and good antibacterial effect due to addition of the antibacterial agent, and is environmentally friendly and healthy.

The invention discloses self-healing conductive ionic gel as well as a preparation method and application thereof. The method comprises the following steps of: uniformly mixing polyethylene glycol, acrylic acid, an initiator, electrolyte salt and water, then carrying out photo-initiated or thermal-initiated polymerization reaction under an oxygen-free or inert condition, and finally balancing under a constant-temperature and constant-humidity condition to obtain the self-healing conductive ionic gel. The PAA-PEO-Li ionic gel prepared by a one-step method has the advantages that the mechanicalstrength far higher than that of common ionic gel is obtained through the hydrogen bond effect and the chain entanglement effect between PAA-PEO molecular chains, good stretchability and rebound resilience can be achieved under the condition that high mechanical strength is kept, and a flexible sensor which is high in sensitivity and good in stability and repeatability can be prepared and used formonitoring human motion or simulating biological skin to feel external stimulation. The self-healing conductive ionic gel has excellent optical transparency and can be used as a potential material for preparing optical devices.

The invention discloses a method for preparing a transparent body mold for elastic monitoring research of thermal damage treatment. The method comprises the following steps: 1, taking egg white and then putting into a container; 2, feeding acrylamide, glycerinum and ammonium persulfate to a container and evenly mixing the raw materials; 3, adding gelatin to the container and fully stirring the gelatin, adding de-aerated water and fully stirring the de-aerated water, centrifuging and removing impurities, so as to obtain mold-making concentrate; 4 enclosing the mold-making concentrate into a body mold, adding TEMED to the mold-making concentrate and beginning solution polymerization, injecting a graphite glycerin mixed solution into the central position of the body mold when the solution is in semi-solidification, and finally preparing the transparent body mold. The method has the significant effects that the elasticity modulus of the body mold can be accurately controlled, the light transmittance is good, dynamic and real-time observation is conveniently carried out on the damaged region of the body mold, graphite is added to the central region of the transparent body mold to be used as a movement marker, and rebuilding of elastic parameter distribution through movement analysis is facilitated.

The invention discloses a high flame-retardant level halogen-free polycarbonate film material and a preparation method thereof. The material is prepared from the following raw materials in parts by weight, polycarbonate resin, compound halogen-free flame retardants, flame-retardant synergists, modifiers, antioxidants, lubrication dispersing agents, light stabilizers, antistatic agents and the like which are mixed by a high-speed mixer, granulated by a double-screw extruder and prepared into the high flame-retardant level halogen-free polycarbonate film material by a three-roller calendaring sheet extruder. A polycarbonate film made of the material is high in strength, strong in tear resistance, excellent in insulation performance, non-toxic and environmentally friendly, and has 0.3mm V-0 excellent flame resistance.

The invention provides a method for improving the quality of graphene directly grown on a nonmetal substrate, belonging to the field of growth of a semi-conducting material. The method comprises the following steps: growing a layer of a graphene film on the nonmetal substrate by using a chemical vapor deposition (CVD) method; then sputtering a thin metal layer on the graphene film; subjecting the substrate with the grown thin metal layer to CVD growth of the graphene film again; and after completion of growth, removing the surface graphene film and the metal layer. The method improves the quality of graphene directly grown on the nonmetal substrate; and after catalytic growth again, the quality and performance of the graphene film are substantially improved.

The invention discloses heat-conducting, flame-retarding and explosion-proof paint for a lamp tube of an emergency lamp. The heat-conducting, flame-retarding and explosion-proof paint is prepared from the following raw materials in parts by weight: 4 to 8 parts of decabromodiphenyl ethane, 4 to 6 parts of aluminum hydroxide, 3 to 5 parts of white carbon black, 8 to 10 parts of crystal whiskers, 0.5 to 1.5 parts of graphene, 20 to 30 parts of epoxy resin, 4 to 6 parts of a coupling agent, 15 to 25 parts of vinyl silicone oil, 5 to 7 parts of silicon carbide micro-particles, 4 to 6 parts of gamma-aluminum oxide, 10 to 20 parts of liquid rubber, 4 to 6 parts of rare-earth oxide, 5 to 15 parts of a processing auxiliary agent and 25 to 35 parts of a solvent. The heat-conducting, flame-retarding and explosion-proof paint disclosed by the invention has relatively good thermal conductivity, relatively high light transmittance, good flame-retarding property and chemical stability; the paint can be coated on the surface of the lamp tube of the emergency lamp and one layer of protection film is formed after the paint is cured, so that the light emitting efficiency of the lamp tube and the heat dissipation requirements can be ensured and a glass lamp shell is prevented from falling off or bursting at high temperature; meanwhile, a preparation method provided by the invention has the advantages that the cost of the materials is relatively low, the raw materials are easy to obtain and a process is simple, so that the preparation method has relatively high application value and a good application prospect.

The invention relates to epoxy resin composition and a reactive type flame retardant thereof. A reactive type flame retardant used in the epoxy resin is trimercapto ethyl phosphate. The epoxy resin composition comprises trimercapto ethyl phosphate, a curing agent and epoxy resin which are uniformly mixed and cured in a preset ratio. Due to the reactive type flame retardant, the epoxy resin composition is relatively good in light permeation rate, refractive index and flame retardancy.

The invention belongs to the technical field of optics and relates to an anti-peeping film. The invention aims to solve a problem that the light transmittance of an existing anti-peeping film is low.The anti-peeping film provided by the invention comprises an upper supporting layer, an anti-peeping layer and a lower supporting layer which are sequentially distributed; the anti-peeping layer comprises diffusion units and light-transmitting units; spaces between the diffusion units are filled with the light-transmitting units; the diffusion units comprise light diffusion particles. The light transmittance of the anti-peeping film can be increased, the light-transmitting units can be prevented from being blackened, a visual effect is improved, and user experience is better.

The invention discloses a display screen module which is applied to electronic equipment. The display screen module comprises a first display array, one or more second display arrays and a control circuit. The electronic equipment comprises one or more groups of optical devices, and each group of optical devices comprises at least one optical device. The display arrays are in one-to-one correspondence with the optical devices, and each second display array is located above the corresponding group of optical devices; the control circuit is used for controlling each second display array to display an image when each optical device in the group of optical devices corresponding to the second display array does not work; and the control circuit is also used for controlling partial or all pixelsof the target second display array corresponding to the group of target optical devices to be turned off when one or more optical devices in the group of target optical devices need to work, so thatthe ambient light can penetrate through the target second display array and the one or more optical devices can work normally.

The invention discloses a cesium iodide single crystal wafer growth method based on a solution. Cesium iodide is placed into dimethyl sulfoxide (DMSO), and the solubility tends to decrease as the temperature rises; seed crystal can be obtained through heating of cesium iodide solutions; and then, the seed crystal is placed and grows in a special glass device so that a high quality cesium iodide single crystal wafer is obtained. The growth method is easy to operate, and the cost of used raw materials is low; and the high quality cesium iodide single crystal wafer can be precipitated from the cesium iodide solutions. According to the growth method, through combination of a solution precipitation method and a mould constraint control method, the cesium iodide single crystal wafer with a controllable size, and high transmittance and light extraction efficiency can be prepared. The cesium iodide single crystal wafer prepared with the growth method is high in quality and transmittance, and unique in photoluminescent properties, and the single crystal wafer prepared with the growth method and silicon based photodiodes can be cooperatively used for making excellent flat plate X-ray detectors.

The present invention relates to silsesquioxane having hot melt extrusion forming capability, a highly transparent and highly heat-resistant plastic transparent substrate using same, and a method of manufacturing same and, more particularly, to a plastic transparent substrate capable of being formed through hot melt extrusion which is produced by sequentially hardening thermoplastic ladder-type silsesquioxane (having hot melt extrusion capability) through low-temperature thermosetting in stages, and to a multilayer plastic transparent substrate having good thermal and optical properties and manufactured by forming a separately produced thermosetting silsesquioxane coating layer on the surface of the substrate and sequentially hardening same. The plastic transparent substrate according to the present invention has little heat deformation under the processing temperatures used for existing display panels, is flexible, and has good light transmittance, so as to be used in various ways for liquid crystal displays, organic light emitting displays, substrates for flexible displays such as electronic paper, or as substrates for solar cells and secondary cells.

The invention relates to a submerged plant growth facilitating device based on natural light. The device includes a natural light collecting part and a light source emitting part. The natural light collecting part is used for collecting the natural light and conducting the collected natural light to the light source emitting part through optical fibers; the light source emitting part is arranged under water and is a linear luminous component or a planar luminous component, wherein the light source emitting part adjustable in position is disposed on a light source fixing bracket. The natural light collecting part and the light source emitting part are both electrically connected to a control part. The submerged plant growth facilitating device can effectively introduce light into the bottomof the water, correspondingly submerged plants planted at the bottom underwater can obtain sufficient illumination, the growth of the submerged plants is facilitated and not limited by the depth andtransparency of the water, recovery of the submerged plants in deep water areas and high-turbidity water areas is achieved, eutrophic water can be effectively purified, and the improvement and stability of the ecological environment of the water areas are facilitated.

The invention relates to a preparation method and application of a copolymer, and particularly relates to a fluorine-containing organic silicon grafted copolymer. The fluorine-containing organic silicon grafted copolymer is synthesized by polydimethylsiloxane with a sulfydryl and/or acrylate functional group, (methyl) acrylate with a perfluoropolyether functional group, and (methyl) acrylate with an alkyl siloxane functional group. A surface coating prepared by the fluorine-containing organic silicon grafted copolymer has relatively good light transmittance, a relatively low dynamic friction coefficient and relatively excellent pollution resistance. Especially, when the fluorine-containing organic silicon grafted copolymer is applied to a touch screen surface, the pollution resistance and decontamination capacity of the touch screen surface can be improved, the dynamic friction coefficient can be lowered, and good sense of touch and smoothness can be provided.

The invention relates to a CR-39 electric welding protective lens with the function of high wearing quality, good transmittance and high shock resistance used on a welding mask, which is prepared by the following material according to parts by weight: 70-90 parts of polydiene propyl diglycol dicarbamate, 10-15 parts of methyl propyl methyl acetate, 0.5-1 part of ultraviolet absorbent UV-531, 0.03-0.05 part of polyurethane parting medium and 0.5-1.5 parts of IPP evocating agent. The lens has the advantages of high wearing quality, good transmittance and high shock resistance, high temperature resistance, uvioresistant, anti-infrared and electrostatic prevention.

The invention discloses a brown polystyrene sheet and a manufacturing method thereof. The brown polystyrene sheet comprises the following components in percentage by weight: 85-90 percent of general-purpose polystyrene, 5-10 percent of high-impact polystyrene and 5-10 percent of brown master batch. The manufacturing method comprises the following steps: mixing the raw materials in proportion; melting and extruding the mixture by using an extruder at the temperature of 180 to 250 DEG C; feeding the melt material to a die head and casting into a thick sheet at the temperature of 200 to 250 DEG C; longitudinally and horizontally drawing and shaping the thick sheet in sequence to obtain a thin sheet; treating the thin sheet by processes of edge trimming, thickness measurement, spraying of silicon oil on double surfaces, rolling up, ageing treatment and splitting. The sheet is good in rigidity and toughness; by uniformly mixing the brown master batch and reasonably controlling the preheating temperature, the sheet is uniform in color, good in light transmittance and more attractive in appearance; in addition, the sheet is easy to stack up after being coated with the silicon oil; therefore, the sheet can be widely applied to product packaging of foods, medicines, electronics, clothes, toys and the like.

The invention provides a side-entry light guide plate, and preparation and application thereof. The light guide plate is provided therein with a plurality of baffle light-transmitting plates arrangedin a staggered manner. A plurality of reflective strips are longitudinally symmetrically disposed on each light-transmitting plate. The bottom surface of the light guide plate is provided with a plurality of strip-shaped grooves. A plurality of mesh points are distributed on the lower surface of each light-transmitting plate. The light guide plate is prepared via injection molding. The light guideplate and the light-transmitting plates are all made of PMMA or PC materials. The light-transmitting plates have a light transmittance greater than 94.5%. By reasonable structural design and preparation process parameter adjustment, the side-entry light guide plate has good structural uniformity, good stability, excellent internal reflection and refraction effects, uniform light distribution on alight-emitting surface, and good light transmittance brightness.

The invention relates to a semi-free molding method of semi-transparent YAG luminescent thin ceramics. YAG fluorescent powder is prepared from raw materials including yttrium oxide Y2O3, alumina Al2O3and cerium oxide CeO2, the YAG fluorescent powder and an adhesive are ground and mixed, and then steps including vacuum degassing, casting molding, vacuum drying, low-temperature vacuum sintering degassing, sintering in a reducing atmosphere, high-temperature vacuum sintering and low-temperature annealing are realized. Thus, fluorescent ceramic products are diversified, the light transmittance ishigh and is controllable according to different demands, the raw materials are cheap and easy to obtain, production technologies are simple and feasible, the controllability is high, the period is short, the production period is about 40h, the product is good is shape, high in luminous efficiency, color rendering index and light emitting intensity, and less easy to age compared with fluorescent powder of traditional white LED, resistant to high temperature and free of color cast and light decay, decoration can be integrated with illumination, and a highly practical light source material is provided and worthy of popularization and application in the market.

The invention discloses a screen material for electronic devices. The screen material is characterized by comprising the following components in parts by weight: 35-65 parts of resin, 3-9 parts of silicon dioxide, 3-7 parts of calcium oxide, 6-15 parts of manganese oxide, 12-16 parts of silica gel, 6-10 parts of chlorinated polyethylene, 2-5 parts of ethylene, 4-8 parts of acetonitrile, 2-6 partsof methanol, 3-6 parts of barium sulfate, 10-15 parts of graphite powder, 3-6 parts of aluminum oxide, 6-12 parts of kaolin, 2-5 parts of sodium silicate, 2-7 parts of magnesium metal, 3-7 parts of tetraethoxysilane and 4-11 parts of copper sulfate. The glass provided by the invention has the advantages of good light transmittance and proper reflexivity and glossiness, can effectively prevent thedamage to eyes when a user uses electronic equipment such as mobile phones, televisions, computers and the like, and is effective in eye protection.