68results about How to "High refractive index" patented technology

The present application belongs to the field of advanced coating and preparation, and particularly relates to a high-transparent and scratch-resistant multifunctional antistatic coating and a preparation method thereof. The present application provides a high-transparent and scratch-resistant antistatic coating, raw materials of the antistatic coating comprising fluorion-containing silsesquioxane monomer, functional monomer and catalyst; wherein the functional monomer is a crosslinking agent or an anti-crystallization agent. The coating obtained by the present application has a light transmittance of >98% (550 nm); a surface pencil hardness of greater than 9H, no scratches after more than 1000 times of steel wool rubbing; a surface resistivity of about 10 8 ~10 9 Ω / sq, and a fast electrostatic discharge rate.

The application relates to a benzocarbazole capping layer material and a preparation method, an organic electroluminescent device and a display device, and belongs to the technical field of organic luminescent materials. The structural general formula of the capping layer material is general formula 1: The organic EL element of the application uses an organic EL element material with high refractive index, good thin film stability and excellent durability as the material of the cap layer, so that the light extraction efficiency is greatly improved compared with the known organic EL element, and the technical effects of high efficiency and long service life are achieved.

This invention provides a resin that combines high refractive index, high heat resistance, and low birefringence. The cyclic olefin copolymer hydride of this invention is formed by hydrogenating a cyclic olefin copolymer, wherein the cyclic olefin copolymer comprises structural units from 1-naphthylnorbornene and structural units from 2-naphthylnorbornene, and the average internal bulk ratio of 1-naphthylnorbornene to 2-naphthylnorbornene is 50 mol% or more. The cyclic olefin copolymer hydride of this invention is preferably used as a material for optical components such as optical lenses.

The application provides a triarylamine derivative and an organic electroluminescent device thereof, and particularly relates to the technical field of organic electroluminescence. In order to solve the problem of low device performance caused by the covering layer material in the prior art, the application provides a triarylamine derivative and an organic electroluminescent device thereof, which is applied to an organic electroluminescent device as a covering layer material to effectively improve the luminous efficiency and service life of the device. Since the triarylamine derivative has strong rigidity, a suitable glass transition temperature (Tg), good thermal stability and a high refractive index in the molecule, the coupling efficiency of light in the device is increased, the light extraction efficiency is improved, the generation of Joule heat is reduced, and the service performance of the device is improved.

A copolymerized polycarbonate resin containing a repeating unit (X) represented by formula (1) and a repeating unit (Y) represented by formula (2), the copolymerized polycarbonate resin containing 66-83 mass% of the repeating unit (X) represented by formula (1) in 100 mass% of the copolymerized polycarbonate resin. (In formula (1), R1 and R2 each independently represent a hydrogen atom or a methyl group) (in formula (2), R3 to R6 each independently represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or a group having 6 to 12 carbon atoms and containing an aryl group, and W represents at least one selected from the group consisting of a single bond, an oxygen atom, a sulfur atom, and a divalent organic group).

The application provides a high-refraction cycloolefin copolymer and a preparation method thereof, and has a structure of formula I. The cycloolefin copolymer can obtain a cycloolefin copolymer resin with high thermal stability due to high steric hindrance of the cycloolefin monomer. The refractive index of the cycloolefin copolymer resin is greatly improved due to R3 and R4 on the cycloolefin monomer, and is first broken through to above 1.70, while maintaining high light transmittance of 91.0-96.0%, extremely low water absorption (<0.01%), and a glass transition temperature of 219 DEG C. The application prepares the cycloolefin copolymer resin with high activity, adjustable molecular weight and glass transition temperature by adjusting the reaction conditions. The copolymer resin has high refractive index, high light transmittance, heat resistance, low birefringence and moisture absorption, excellent fluidity, moldability and dimensional stability.

A light guide member of a waveguide structure of an image display device for guiding image light incident from a display and emitting the image light toward an eye of a user, characterized by being formed of a single crystal composed of lithium niobate. According to the present invention, a light guide member having a high refractive index and a high internal transmittance can be provided.

This invention discloses a dry ice crystal particle, its preparation method, and a ceramic tile, relating to the field of ceramic tile technology. The dry ice crystal particle is prepared from a first flashing frit, a second flashing frit, and a matte frit. Since the dry ice crystal particle is composed of three frits with different refractive indices and firing temperatures, different phases can be formed due to the different firing temperatures of each frit. The differences in light transmittance and refractive index between these phases are then utilized to create a better flashing effect. Simultaneously, the matte glaze serves as a backdrop, further enhancing the display of the flashing effect.

The application discloses a 750-850nm waveband photonic crystal surface emitting laser and a preparation method, and belongs to the field of semiconductor lasers. The application is divided into surface etching and buried photonic crystal layer structures, uses n-GaAs as a substrate, combines surface etching or buried photonic crystal structures, uses amorphous silicon, titanium oxide, GaP or AlGaAs as main materials of a resonant cavity, utilizes large-area in-plane resonance and high coupling with a quantum well active layer, realizes low-loss resonance and optical gain, and realizes a 750-850nm waveband semiconductor laser with high light beam quality, high power and surface emission.

The invention provides an arylamine derivative and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials. The invention aims to solve the technical problems of low luminous efficiency and short service life of an organic electroluminescent device caused by low mobility of a current hole transport material and low refractive index of a covering layer material. The compound provided by the invention has high hole mobility and refractive index, good thermal stability and good film-forming property, and can significantly improve the luminous efficiency and service life of a device, optimize the light extraction effect and block impurities. The organic light-emitting device can be widely applied to the fields of panel display, illumination light sources, flexible OLEDs, electronic paper, organic solar cells, organic photoreceptors or organic thin film transistors, indication boards, signal lamps and the like.

The invention discloses an optical monomer and a preparation method thereof, a resin mixture and application, the molecular structure of the optical monomer takes an aromatic skeleton or an aliphatic skeleton as a center and extends outwards to form a branched chain with a hexa-mercapto functional group, the aromatic skeleton has certain rigidity, the aliphatic skeleton has flexibility, and the molecular structure is uniform. Therefore, the optical monomer has ultrahigh refractive index, high light transmittance and good heat resistance.

The application discloses a maleimide-based self-initiating two-photon photoresist and a patterning method thereof. The maleimide-based self-initiating two-photon photoresist contains 100 parts of a maleimide compound, 10-30 parts of a polycyclopentenyl acrylate and 20-50 parts of a high-refractive fluorene-based active crosslinking agent. The maleimide-based self-initiating two-photon photoresist avoids the use of conventional two-photon initiators, thereby avoiding the migration and penetration of the residual photo-initiator and photolysis fragments in the common photoresist and the possibility of further photochemical reactions; the oxygen-blocking effect of the polycyclopentenyl acrylate can ensure the normal use of the photoresist in air; and the high-refractive fluorene-based active crosslinking agent can effectively adjust the refractive index of the photoresist to improve the writing effect. After the photoresist is written by a femtosecond laser and developed, two-dimensional lines with a feature size of hundreds of nanometers can be obtained, and three-dimensional structures with a size of hundreds of micrometers can also be written.

The invention provides optical glass, which comprises the following components in molar percentage: 25-40% of SiO2; 1 to 8 percent of B2O3; 1 to 8 percent of La2O3; 1 to 6 percent of BaO; 5 to 25 percent of CaO; 5 to 15 percent of Nb2O5; 8 to 20 percent of TiO2; the content of SiO2 and B2O3 is 27%-45%, and the content of Li2O is 1.5%-15%. The optical glass contains a proper amount of SiO2, alkali metal oxide and other components, so that the optical glass has excellent anti-devitrification performance; the optical glass contains high-refractive-index components such as Nb2O5 and TiO2, so that the optical glass has a relatively high refractive index; through reasonable component design, the glass has low relative partial dispersion.

The application relates to an ultra-low-loss large-effective-area optical fiber, which comprises, from inside to outside along the radial direction of the optical fiber, a core layer, a first gradient layer, an inner cladding layer, a second gradient layer, a sunken cladding layer, a third gradient layer, a transition cladding layer, a fourth gradient layer and an outer cladding layer; the core layer is chlorine-boron co-doped or chlorine-fluorine co-doped silica and is not doped with germanium; the first gradient layer, the inner cladding layer, the second gradient layer, the sunken cladding layer, the third gradient layer, the transition cladding layer and the fourth gradient layer are all fluorine-boron co-doped silica; and the outer cladding layer is pure silica. The application can solve the optical fiber attenuation problem caused by the viscosity imbalance of the existing optical fiber structure while having ultra-low loss and large effective area.

This invention relates to the field of micro / nano manufacturing technology, and in particular to a high-refractive-index fluidized nanoparticle, a hybrid photoresist, a patterned coating, and methods for preparing the respective. The high-refractive-index fluidized nanoparticle comprises a core, the core being modified with a first ligand and a second ligand; the first ligand is one or more selected from methacrylic acid, 4-pentenoic acid, methacryloxypropyltrimethoxysilane, and sodium methacrylate sulfonate; the second ligand is one or more selected from piperidine, N,N-diisopropylethylamine, 1,5,7-triazabicyclo[4.4.0]decene-5-ene, tetramethylguanidine, triethylamine, and tetrahydropyrrole. This invention, through the design of ultra-small metal oxide nanoparticles and innovative organic ligands, successfully solves the technical contradiction of traditional photoresist materials in achieving high resolution, high refractive index, and low curing shrinkage.

This invention provides a terminal alkenyl-containing liquid crystal compound, its preparation method, and its applications. The terminal alkenyl-containing liquid crystal compound has the structure shown in general formula P. Liquid crystal compositions containing the terminal alkenyl-containing liquid crystal compound of this invention exhibit a fast response speed, a large refractive index and clearing point, and a wide phase transition temperature. The synthesis method of the compound of this invention has high yield, simple post-processing, and is suitable for industrial production.

This invention provides a transparent ABS resin and its preparation method, belonging to the technical field of styrene-based resin materials. Existing transparent ABS preparation methods suffer from high cost, complex processes, and unstable product quality, making industrialization difficult. Therefore, a new method for preparing transparent ABS resin is needed. The transparent ABS resin prepared by this invention has a low-styrene rubber core and a special three-layer core-shell structure, achieving good transparency and high impact resistance. It is low-cost, has a simple and efficient process, stable product quality, and is easily industrially achievable.

The application discloses an infrared transparent chalcogenide glass solution which is prepared by dissolving chalcogenide glass and an organic amine solvent, wherein the organic amine solvent is an amine salt solvent containing a bifunctional group, a micro-network structure of the chalcogenide glass is formed by covalent bonding of chalcogen elements, modifiers and selectively added dopants, the chalcogen elements are S, Se or Te, the modifiers are at least one of Ge, Sb, In, Sn and As, and the dopants are at least one of Cd, Ag, CsCl, Bi, Cs and Cu, the micro-network structure of the chalcogenide glass is rich in MN a The glass solution has high transmittance and high refractive index in a wide infrared spectrum, has high light control capability, can be used for preparing an infrared liquid anamorphic lens, and is used in a middle and far infrared anamorphic imaging system, so that the imaging system is more integrated, and a new way is provided for the development of an infrared imaging system in the direction of light weight, small size and high performance.

This invention discloses a patterned substrate and its fabrication method, as well as an epitaxial wafer for a light-emitting diode (LED), relating to the field of semiconductor optoelectronic devices. The patterned substrate includes a substrate body, a metal reflective layer, and multiple pyramidal protrusions. The substrate body has a first surface and a second surface disposed opposite to each other; the metal reflective layer covers the first surface; the multiple pyramidal protrusions are uniformly distributed on the metal reflective layer; each pyramidal protrusion includes a first AlN layer and a SiO2 layer sequentially stacked on the metal reflective layer. Implementing this invention can improve the luminous efficiency of the LED.

This application discloses an optical adhesive, its preparation method, an optical adhesive film, and a display device, belonging to the field of optical adhesive technology. By compounding a modified acrylate copolymer with a polyurethane acrylate oligomer in the raw materials of the optical adhesive, a highly transparent resin system can be formed. The modified acrylate copolymer is a copolymer pre-formed from at least one acrylate derivative. Compared to ordinary acrylate monomers, the modified acrylate copolymer possesses high refractive index and low light scattering characteristics, effectively improving light transmittance. Furthermore, this highly transparent resin system achieves good light transmittance without relying on nanoparticles, avoiding the problem of nanoparticle agglomeration, thereby improving the haze of the optical adhesive layer obtained from the optical adhesive.

The present application provides a photosensitive resin composition, a pattern formed from the composition, and a display device, the photosensitive resin composition comprising (A) a monomer, (B) an alkali-soluble resin, (C) a photopolymerization initiator, and (D) a solvent, wherein the (A) monomer comprises a novel high-refractive monomer chemical formula 1 comprising three or more ethylenically unsaturated double bonds and a polycyclic aromatic structure having a heteroatom, thereby enabling a coating film with a high refractive index, a high cone angle, and excellent heat and moisture resistance to be obtained, and the reliability of the coating film to be improved.

This invention provides an antireflective coating, comprising: a substrate; and alternatingly stacked high-refractive-index layers and low-refractive-index layers along the thickness direction of the substrate, wherein the high-refractive-index layers are made of titanium pentoxide and the low-refractive-index layers are made of silicon aluminum oxide; the alternatingly stacked high-refractive-index and low-refractive-index layers along the thickness direction of the substrate sequentially include a first low-refractive-index layer, a first high-refractive-index layer, a second low-refractive-index layer, a second high-refractive-index layer, a third low-refractive-index layer, a third high-refractive-index layer, and a fourth low-refractive-index layer; the physical thickness of the second high-refractive-index layer is 143nm-130nm, and the physical thickness of the fourth low-refractive-index layer is 123nm-130nm. This invention improves the adhesion between the deposited antireflective coating and the substrate, and reduces the reflectivity of the antireflective coating in the near-infrared range.

The invention discloses a monomeric compound, a polymer and an optical lens, and relates to the technical field of optical materials, the structural formula of the monomeric compound is as shown in formula (I), in the formula, A is hydrogen or methyl; r1 comprises at least one of hydrogen, fluorine, chlorine, bromine, iodine, a cyano group, a nitro group, a phenyl group, a C1-C6 alkyl group, a C1-C6 alkoxy group, a C1-C6 alkyl substituted phenyl group and a C1-C6 alkoxy substituted phenyl group; n = 1, 2, 3, 4 or 5; b comprises a C1-C6 alkyl group, a C1-C6 alkoxy group or does not exist; d comprises a conjugated cyclic group or a substituted conjugated cyclic group. The novel monomeric compound provided by the invention can be used for preparing a polymer with high refractive index, and the polymer has good light transmission and mechanical properties at the same time.

The invention belongs to the technical field of optical communication, and particularly discloses a preparation method of an ultra-low attenuation optical fiber and the ultra-low attenuation optical fiber, and the preparation method comprises the steps: S1, preparing a fluorine-doped sleeve with non-uniform fluorine distribution through employing an external vapor deposition technology; s2, stretching and corroding the fluorine-doped sleeve to obtain an inner cladding with a predetermined aperture; s3, SiO2 is deposited in the inner cladding layer by using an in-tube vapor deposition process, alkali metal doping is performed to form a core layer, the inner cladding layer with the core layer is melted and shrunk into a rod shape, and a rod-shaped structure is obtained; s4, preparing an outer cladding layer outside the rod-shaped structure through an external vapor deposition process, drying the rod-shaped structure with the outer cladding layer, and solidifying in a fluorine-containing atmosphere to obtain an optical fiber preform; and S5, drawing the optical fiber preform to form the optical fiber. According to the preparation method, external chemical vapor deposition and in-tube vapor deposition are utilized to achieve better optical fiber profile matching and viscosity matching.

The application provides a suspended optical mechanical system, comprising a first substrate block, a suspended waveguide, a suspended support beam, a plurality of support tether groups, a suspended detection mass and an optical cavity, wherein the suspended waveguide comprises a linear main body part extending along an X direction and a plurality of connection parts arranged in sequence and at intervals along the X direction, and the support tether groups are connected to the section of the suspended waveguide with the connection parts, the stability of the connection of the support tether and the suspended waveguide is increased, the width of the suspended waveguide at the connection parts is enlarged, the optical mode can be well limited in the waveguide, and the influence of the support tether on the optical mode is minimized. The tapered part of the connection part ensures the singularity of the mode in the process of light field transmission and slows down the change trend of the width of the suspended waveguide, which is beneficial to reduce the scattering loss and further increase the quality factor. The connection part arranged on one side can ensure that the gap width between the suspended waveguide and the optical cavity is constant, thereby ensuring the optimal coupling efficiency.

The invention relates to a cycloolefin terpolymer, a preparation method thereof and an optical element. The preparation method of the cycloolefin terpolymer comprises the following steps: mixing an ethylene monomer, a cycloolefin monomer and a conjugated aryl-substituted olefin monomer, and carrying out polymerization reaction in the presence of a catalyst and a cocatalyst to prepare the cycloolefin terpolymer, the conjugated aryl substituted olefin monomer has the following structural characteristics: m is an integer from 1 to 10, and R1 is naphthyl, anthryl, phenanthryl, pyrenyl, acenaphthenyl or chrysenyl; the catalyst comprises a metallocene catalyst; the cocatalyst comprises one or more of an aluminum compound and a boron compound; the conditions of the polymerization reaction are as follows: the pressure is 2.2 MPa to 10 MPa. The polymerization activity of the preparation method is obviously improved, and the prepared cycloolefin terpolymer has relatively high refractive index and mechanical property and relatively low water absorption.

The present application relates to a kind of deep ultraviolet grating polarizers and preparation method thereof, belong to polarizer technical field, including from bottom to top sequentially connected substrate, first dielectric layer, second dielectric layer and interval setting line grid on the upper surface of second dielectric layer, the upper surface of second dielectric layer between adjacent line grid is provided with metal layer, line grid includes from bottom to top sequentially connected first dielectric layer, second dielectric layer and metal layer;The present application is by adding high low refractive index alternately between substrate and metal line grid first, second dielectric layer, and metal layer is set on the upper surface of second dielectric layer in line grid gap, constructs the medium-metal composite structure with resonance coupling effect.The design effectively controls the equivalent optical admittance of deep ultraviolet band, significantly enhances the transmittance of TE polarized light, while maintaining the efficient inhibition to TM polarization, so as to improve the polarization efficiency while reducing metal absorption loss.As a whole, the polarizer has the advantages of high transmittance, high extinction ratio and the like.

The invention relates to the technical field of defect identification, and provides a silicon carbide epitaxial layer morphology defect classification method and system based on reinforcement learning, and the method specifically comprises the steps: obtaining a morphology feature mapping stability parameter of defect identification according to historical morphology evolution data, and carrying out the calculation to obtain a target classification semantic convergence limit; constructing a defect discrimination evolution model based on reinforcement learning, importing the primary light intensity distribution vector, the lattice dislocation topological matrix parameters and the multi-view morphology response tensor into the defect discrimination evolution model, and generating multiple groups of spatial dimension feature representation values; and carrying out confidence fitting screening, obtaining a target execution action instruction, driving the silicon carbide morphology detection module to carry out attitude registration mapping, and outputting an epitaxial layer morphology defect classification result. According to the method, the problem that in the prior art, normal growth artifacts caused by 4-degree off-axis angle step flow are difficult to accurately distinguish in a dynamic thermal stress environment is solved.

The application discloses a preparation method of silica nano-aerogel heat-insulating paper, which comprises the following steps: (1) covering a permeable membrane interlayer on the surface of each fiber paper; (2) preparing a silica aerogel prepolymer mixed solution; (3) compounding the silica aerogel prepolymer mixed solution with the fiber paper to obtain wet silica aerogel paper; and (4) performing solvent replacement, hydrophobic modification and drying on the wet silica aerogel paper. The aerogel paper is prepared by covering the permeable membrane interlayer on the surface of the fiber paper and applying gravity in the gel process, so that the problems of the brittleness of the aerogel itself, the low strength of the fiber material itself, the damage of the prepared ultra-thin aerogel paper (less than or equal to 0.3 mm) and the like are solved, the gel absorption amount of the fiber paper is effectively controlled, and the flatness, thickness and thickness size deviation of the aerogel paper are ensured; and the prepared silica nano-aerogel heat-insulating paper is flat in appearance and free of defects such as wrinkles, holes and cracks which affect use.

The application provides a long-focus short-range imaging optical system for space and an imaging device, wherein the optical system is coaxially provided with a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth cemented lens group, a sixth lens and a seventh lens in sequence along a light incidence direction; the material of the first lens is quartz; the refractive index of the second lens and a fifth cemented negative lens of the fifth cemented lens group is greater than or equal to 1.9; the refractive index of the third lens, the fourth lens and the sixth lens is less than or equal to 1.5; the refractive index of a fifth cemented positive lens of the fifth cemented lens group is between 1.5 and 1.6; and the refractive index of the seventh lens is between 1.8 and 1.9. The application improves the radiation resistance of the optical system, makes the optical system suitable for space environment, realizes that the full field of view distortion is less than or equal to 0.1% at different object distances when the focal length is 75 mm, improves the image quality, and further solves the problem of image quality decline caused by object distance change during long-focus short-range imaging in the space radiation environment.