1197 results about "High transmittance" patented technology

The invention provides a self-repairing EVA adhesive film and a preparation method thereof, and relates to the technical field of solar photovoltaic module packaging. According to the self-repairable EVA adhesive film disclosed by the invention, through Diels-Alder reactive group grafting and silane coupling agent microencapsulation technologies, a dual self-repairing mechanism of a photovoltaic module packaging adhesive film is realized, and the dual self-repairing mechanism comprises physical rearrangement repairing and chemical bonding repairing; while high light transmittance (more than or equal to 90%) and bonding strength (more than or equal to 96 N / cm) are maintained, the aging resistance (delta YI is less than or equal to 3) of the EVA adhesive film is remarkably improved, the service life of the EVA adhesive film is remarkably prolonged, and the problems that a traditional EVA adhesive film is easy to age in an extreme environment and is easy to suffer from micro damage caused by mechanical stress are solved; the preparation process disclosed by the invention is compatible with the existing production line, and has a relatively high industrial application value.

The invention relates to the technical field of PET optical films, and particularly discloses a high-light-transmittance blue-light-resistant PET optical film and a preparation method thereof, and the high-light-transmittance blue-light-resistant PET optical film is prepared from the following raw materials by weight: 70-85% of a polyethylene glycol terephthalate resin matrix; 3%-8% of a benzotriazole anti-blue light agent; 5%-12% of a silicon dioxide nano anti-reflection agent; 2%-6% of nano zinc oxide or nano cerium oxide; 1.5% to 4% of a polycarbodiimide cross-linking agent; 0.5%-3% of an anti-blocking agent; 0.4%-1.5% of an antioxidant; 0.4%-1.0% of an ultraviolet light absorber; the balance is a processing aid; the preparation method comprises the following steps: S1, pretreating the raw materials; s2, a mixing procedure; and S3, extruding and coating. The PET optical film provided by the invention has high optical properties of high light transmittance, blue light resistance and low haze, and has the advantages of high light transmittance and blue light blocking rate of the optical film and improvement of the application range of the optical film.

The invention discloses acousto-optic chalcogenide glass with a high laser damage threshold, the chemical composition formula of the acousto-optic chalcogenide glass is GexSySez, x, y and z respectively represent the mole fractions of Ge, S and Se, x = 10-30, y = 5-40, z = 40-70, x + y + z = 100, and the microscopic network structure of the acousto-optic chalcogenide glass contains a [GeSe4] tetrahedron, a [GeSSe3] tetrahedron, a [GeS2Se2] tetrahedron, a [GeS3Se] tetrahedron, a [GeS4] tetrahedron and a Se ring. The acousto-optic chalcogenide glass provided by the invention has a relatively high laser damage threshold Fth (9.72-15.58 J / cm < 2 > at1550 / 20ns / 5kHz), a relatively low thermo-optic coefficient dn / dT and good acousto-optic characteristics and mechanical properties, is high in near-infrared band transmittance, and has a relatively high laser damage threshold while ensuring a high acousto-optic quality factor. The material can be used as a material basis for developing high-performance and high-stability infrared acousto-optic modulation devices.

The invention relates to the technical field of flexible transparent electrodes, in particular to a Cu / Al laminated metal grid flexible transparent electrode and a preparation method thereof. The Cu / Al laminated metal grid flexible transparent electrode comprises a flexible substrate, a copper layer arranged on the flexible substrate and an aluminum layer arranged on the copper layer, and the aluminum layer located on the outer layer spontaneously forms an Al2O3 passivation layer with the thickness of 2-5 nm in air. The Al2O3 passivation layer can effectively prevent oxygen and moisture from permeating inwards, so that oxidation of the copper layer in a humid or high-temperature environment is fundamentally inhibited, long-term stability of the electrical property of the electrode is ensured, and meanwhile, due to the fact that the thickness of the copper layer is 150-250 nm, excellent conductivity is provided, and low square resistance is achieved; the latticed structure maintains high light transmittance of the electrode while ensuring a high conductive path. Finally, the structure has excellent oxidation resistance, high light transmittance, low sheet resistance and flexible stability under the support of a flexible transparent substrate with the thickness of 50-200 [mu] m, and meets the harsh requirements of a new generation of flexible optoelectronic devices on electrode performance.

The invention discloses a color-permeable colorful ceramic and a preparation process thereof, and belongs to the technical field of ceramic preparation processes, a transparent AlON ceramic body is formed by low-temperature diffusion bonding sintering, an adjustable structural color of 480-630 nm is realized through TiO2 / ZrO2 nanocrystalline spacing (180-220 nm), a Sm2O3 chemical color is superposed, delta E is less than or equal to 0.5, and the color is changed along with the angle and does not fade; after decoration firing of a finished product, embossment line patterns can be engraved inside and outside the ceramic body through femtosecond laser, due to the fact that the main body of the ceramic body is high in light transmittance, when light directly irradiates or enters the interior from the top as a bottle, halo of the embossment line patterns engraved inside and outside can be scattered on the surface, and the overall optical effect is improved; the ceramic is suitable for high-grade decorative ceramics such as bottles and ornaments.

The invention relates to the technical field of optical cement, in particular to high-temperature-resistant acrylic optical cement with high light transmittance and a preparation method of the high-temperature-resistant acrylic optical cement. The preparation method of the high-light-transmittance high-temperature-resistant acrylic optical adhesive comprises the following steps: (1) under the protection of inert gas, mixing an acrylate monomer, a carboxyl-containing monomer, an epoxy-containing monomer, a hydroxyl-containing monomer, a photoinitiator and modified inorganic nanoparticles, and stirring at 60-90 DEG C and 200-600rpm for 3-8 hours to obtain an adhesive solution; and (2) carrying out vacuum curing on the glue solution at 50-80 DEG C for 5-15 minutes to form a glue material, pressing the glue material into a film, and cooling to obtain the optical cement. The prepared high-temperature-resistant acrylic optical adhesive with high light transmittance has good light transmittance, high-temperature resistance and good peel strength, the light transmittance of the optical adhesive is larger than 90%, the heat-resistant temperature is larger than 150 DEG C, the peel strength is larger than 14 N / 25 mm, and the peel strength after high-temperature treatment is larger than 11.8 N / 25 mm.

The invention belongs to the technical field of energy-saving materials, and discloses a thermal insulation coating energy-saving material, which is prepared from the following raw materials in parts by weight: 90 to 120 parts of waterborne resin, 10 to 25 parts of modified nano cesium tungsten bronze material, 5 to 20 parts of modified nano silicon dioxide, 1 to 10 parts of light stabilizer, 0.1 to 1 part of coupling agent, 0.5 to 3 parts of flatting agent, 5 to 10 parts of wetting dispersant and 0.05 to 0.1 part of defoaming agent. According to the heat-preservation heat-insulation coating energy-saving material disclosed by the invention, the water-based resin is used as a main film-forming material, the modified nano cesium tungsten bronze and the modified nano silicon dioxide are used as nano functional materials, and the light stabilizer is used as an auxiliary material; by utilizing the excellent visible light transmittance and near-infrared light shielding performance of the modified nano-scale cesium tungsten bronze and the high transmittance and infrared barrier performance of the modified nano-silica, the glass can ensure that the visible light transmittance of the glass is 76% or above, meanwhile, 97% or above of infrared light and ultraviolet light are isolated, and the glass has excellent heat insulation and cooling effects.

The invention discloses power generation glass capable of transmitting 5G signals, and relates to the technical field of photovoltaics. The 5G signal transmission power generation glass comprises a glass substrate and a power generation thin film layer arranged on one side face of the glass substrate, the power generation thin film layer is provided with signal anti-reflection structure units which are distributed in a two-dimensional periodic array mode and penetrate through the power generation thin film layer, and the signal anti-reflection structure units are centrosymmetric Y-shaped grooves. The signal anti-reflection structure unit is arranged on the glass substrate, so that high transmittance of electromagnetic waves of a target frequency band can be realized on the premise of ensuring the power generation efficiency of the power generation glass. In addition, the centrosymmetric Y-shaped groove has the advantages of being insensitive to angles and polarization and the like, and has high practical value in actual life and production application scenes.

The invention belongs to the technical field of flexible transparent energy storage, and discloses a preparation method and application of a flexible stretchable transparent MXene / AgNWs / PDMS composite film electrode, according to the method, a PDMS substrate film, AgNWs and MXene are assembled layer by layer, and a Schottky barrier is formed between one-dimensional AgNWs and two-dimensional MXene, so that the MXene material is firmly attached to the surface of the AgNWs material, corrosion of the AgNWs can be prevented, and the service life of the flexible stretchable transparent MXene / AgNWs / PDMS composite film electrode is prolonged. According to the MXene / AgNWs / PDMS composite film electrode, the cycle stability of the composite electrode is improved, a 1D / 2D heterostructure can be formed, the electrochemical storage capacity of the MXene / AgNWs / PDMS composite film electrode is effectively improved, and a flexible transparent supercapacitor with high light transmittance, high capacitance and mechanical flexibility perfectly unified is expected to be achieved.

A raw material composition for preparing a modified polyurethane optical material belongs to the technical field of optical material chemistry, and comprises the following components: 45-55 parts by weight of polyisocyanate; 35 to 45 parts by weight of tris (2-mercaptoethylthio) methane as shown in a formula I; and 25 to 40 parts by weight of 1, 3-bis (thiophenyl)-2-propyl acrylate. The modified polyurethane optical material obtained by polymerization reaction of the composition has high transmittance and refractive index and good mechanical properties, and is suitable for optical components with high requirements on refractive index. .

A polarization conversion transmission type reconfigurable metamaterial structure with amplitude-phase independent regulation and control is formed by copying and translating n * n basic units, and each basic unit comprises three dielectric layers, five metal layers and two air layers; the dielectric layers comprise a first dielectric layer, a second dielectric layer and a third dielectric layer from top to bottom; a first air layer is arranged between the first dielectric layer and the second dielectric layer, and a second air layer is arranged between the second dielectric layer and the third dielectric layer; the amplitude regulation and control layer is located on the upper surface of the first dielectric layer, and the amplitude regulation and control bias circuit layer is located on the lower surface of the first dielectric layer; the polarization conversion phase regulation and control layer is located on the upper surface of the second dielectric layer, and the polarization conversion phase regulation and control bias circuit layer is located on the lower surface of the second dielectric layer; the polarization gate layer is located on the upper surface of the third dielectric layer. According to the invention, efficient electromagnetic regulation and control in a transmission mode are realized, independent regulation and control in two dimensions of amplitude and phase are realized, and unification of high transmissivity and accurate regulation and control in a microwave frequency band is realized.

The invention relates to the field of optical thin films, in particular to a preparation method of an optical diffusion film. A preparation method of an optical diffusion film comprises the following steps: uniformly mixing a curing agent and polydimethylsiloxane, curing, and then carrying out oxygen plasma treatment and room temperature aging treatment to obtain a polydimethylsiloxane flat plate; dissolving PET particles and PMMA particles in a solvent to obtain a polymer solution; and placing a polydimethylsiloxane flat plate above the polymer solution, and standing to obtain the optical diffusion film. According to the application, PMMA is used as a high glass transition temperature component to be blended with PET, so that the overall glass transition temperature of a blending system is improved, and the practicability of the optical diffusion film in a high-temperature environment is improved; strong scattering is provided through the refractive index difference between air holes and a polymer phase, and a refractive index gradient is formed by using the refractive index difference between PET and PMMA, so that a secondary scattering interface is formed, and light absorption is reduced and high transmittance is maintained while high haze is ensured.

The invention relates to the technical field of optical films, and discloses a PET-based composite optical film and a preparation method thereof.The optical film is prepared from 100 parts of PET master batch, 5-10 parts of anti-blue-light nanofiller and 1-3 parts of interfacial compatibilizer through melt extrusion, asynchronous two-way stretching, online anti-fingerprint coating liquid coating and cooling and rolling; the blue-light-resistant nano filler is a core-shell structure filler prepared by taking KH570 silanized nano cerium oxide as a core, polymerizing by grafting glycidyl methacrylate to form a shell layer, and then reacting with 1H-benzotriazole-1-methanol. The anti-fingerprint coating liquid is prepared from perfluoropolyether modified siloxane acrylate and nano silicon dioxide sol. Through core-shell filler design and functional coating online coating, the technical problems that inorganic nanoparticles are easy to agglomerate and organic small molecule auxiliary agents are easy to migrate are synergistically solved, and the obtained optical film has excellent properties of high light transmittance, low haze, efficient blue light resistance and lasting fingerprint resistance and is good in durability.

The invention provides a transparent bulletproof ceramic composite structure with an electric heating function and a preparation method of the transparent bulletproof ceramic composite structure. The composite structure comprises an anti-splashing layer (1), a first middle layer film (2), a multi-layer stacked structure (3) of glass sheets and films, a first transition layer (4), an electric heating film layer (5), a second transition layer (6), a ceramic layer (7), a first antireflection film layer (8), a second antireflection film layer (9), a third antireflection film layer (10), a second middle layer film (11), an inorganic glass layer (12), a third transition layer (13) and an anti-static layer (14) which are arranged in sequence. The composite structure provided by the invention has excellent impact resistance and bulletproof grade, can effectively resist the damage of high-speed elastic sheets or impact objects, and meets the requirements of high-safety application scenes such as weapon armors, armed airplanes and high-speed trains; and the anti-static film has clear optical observation capability, high transmissivity and anti-static property.

The invention relates to the technical field of protective film preparation, and particularly discloses an antistatic silica gel protective film and a preparation method thereof.The protective film comprises a base material layer and an antistatic coating coated on the surface of the base material layer; the base material layer is prepared from methyl vinyl silicone rubber, modified fumed silica, a compound antistatic agent A and a vulcanizing agent, and the antistatic coating is prepared from a compound antistatic agent B and water-based acrylic resin. The preparation method comprises the following steps: banburying, calendering and vulcanizing a compound antistatic agent A, methyl vinyl silicone rubber and modified fumed silica to form the base material layer; and finally, mixing the compound antistatic agent B with water-based acrylic resin to prepare an antistatic coating solution, coating the surface of the base material layer with the antistatic coating solution, and drying and curing to obtain a finished product. The silica gel protective film prepared by the invention has excellent antistatic property, mechanical property, adhesive force and high light transmittance, and is suitable for the fields of electronic equipment screens, optical lenses and the like.

The invention relates to a laminated staggered sub-wavelength polarization grating structure and a preparation method thereof, through staggered arrangement of a first metal grating layer and a second metal grating layer, transmission of polarized light of a transverse electric field can be effectively inhibited, and the extinction ratio is remarkably improved. Through the substrate, the first dielectric layer, the second dielectric layer, the first metal grating layer, the third dielectric layer and the second metal grating layer which are sequentially arranged from bottom to top, the whole device obtains a higher extinction ratio while keeping high transmittance, the overall structure is simple, the processing difficulty and cost are reduced, and the production efficiency is improved. And the number of the used dielectric layers and metal layers is small, the thickness requirement is low, and therefore it is ensured that the cost is controllable.

The utility model discloses an UTG composite polaroid, and belongs to the technical field of polaroids, the UTG composite polaroid is characterized by comprising a PET protective film layer, an UTG material layer, an adhesive layer, a polyvinyl alcohol film layer, a protective film layer, a pressure-sensitive adhesive layer and a release film layer which are sequentially stacked from top to bottom, and the thickness of the UTG material layer is 10-70 [mu] m. According to the display panel, one layer of OCA glue is reduced, the product thickness is reduced, the foldability is good, the cover plate glass and the polaroid can be directly combined in the processing procedure, the OCA glue material and the laminating procedure in the laminating process are omitted, the product cost is reduced, and the display panel has the advantages of high water vapor barrier rate, excellent RA reliability, excellent optical performance, high transmittance, good expansibility and the like. And the expansion effect of various special requirements is met.

This specification discloses a light control film and a display device to which the light control film is applied. The light control film, when applied to a display device, enables precise control of the light output angle, ensuring high transmittance, high brightness, and excellent resolution within the light output angle, and blocking unwanted light that can cause defects such as ghosts or moire. Even when applied to an OLED display, the light control film exhibits the above-mentioned performance without causing defects such as stripes that are noticeable to a viewer. This specification also discloses a display device to which the light control film is applied.

The invention discloses optical-grade PMMA (polymethyl methacrylate) and a continuous polymerization process method and application thereof, the continuous polymerization process method comprises a pre-polymerization stage, a body continuous polymerization stage, a four-stage vacuum devolatilization stage and a melt extrusion stage, through special design of temperature programs and the like in the technological process, the prepared PMMA can reach the optical grade, and the optical-grade PMMA can be used for preparing the optical-grade PMMA. The method has the advantages of high light transmittance, narrow molecular weight distribution, and realization of large-scale industrial production.

The invention provides an infrared target simulator focusing collimation projection optical system and a design method thereof. The optical system is composed of a telescope objective, an intermediate field lens and a relay lens group. A source target and a background image generated by the infrared target simulator are input into the DMD and then are incident to the focusing collimation projection optical system through the DMD, the incident light firstly passes through the relay lens group and the intermediate field lens to generate a primary image of the image on the DMD, and then the primary image surface is collimated and projected to an entrance pupil of a tested photoelectric device through the telescope objective. According to the invention, optical material parameters are finely analyzed and matched, three infrared optical materials are adopted to form a lens group, a field lens is added to compress the aperture of a light beam, and only five lenses are used, so that achromatism and athermalization are realized while high transmittance is ensured. And a focusing lens group and a precise mechanical structure are arranged in the relay lens group, so that the target simulation requirement of photoelectric detection equipment such as a guide head at a wider working temperature range is met, and meanwhile, the requirement of obtaining a clear simulation target scene by matching detected photoelectric equipment with different working distances can be met.

The invention discloses a femtosecond laser direct-writing Type X structure-based geometric phase fork-shaped grating, a preparation method and application of the femtosecond laser direct-writing Type X structure-based geometric phase fork-shaped grating in vortex light, and belongs to the technical field of laser processing, and the femtosecond laser direct-writing Type X structure-based geometric phase fork-shaped grating comprises design and parameter calculation of a geometric phase fork-shaped grating device, determination of a processing parameter window of a Type X structure and the femtosecond laser direct-writing fork-shaped grating. According to the invention, femtosecond laser is utilized to induce and generate an anisotropic nanopore structure with ultra-high transmittance higher than 97% in fused quartz and other transparent materials, namely a Type X structure, the structure has a birefringence characteristic, and the slow axis angle of the structure is always perpendicular to the laser polarization direction, so that the slow axis angle can be continuously adjusted by adjusting laser polarization. The Type X structure serves as a metasurface unit of the geometric phase fork-shaped grating, geometric phase regulation and control are achieved by controlling slow axis orientation of the Type X structure, and therefore generation and regulation and control of vortex light are achieved. The method is high in efficiency and simple in process.

The invention relates to a preparation method and application of a black high-transmittance resin composite board, and belongs to the technical field of advertising materials. The resin is formed by compounding a black light-transmitting layer, a light guide layer and a diffusion layer, wherein the high-transmittance layer is prepared by modifying a carboxylated carbon nanotube with a silane coupling agent, polymerizing with a methyl methacrylate monomer, and directionally arranging in a magnetic field, so that high light transmittance and pure black appearance are realized; the light guide layer takes polycarbonate as a matrix, SiO2 microspheres are added, and the light transverse propagation efficiency is improved through hot press molding; the diffusion layer takes polymethyl methacrylate as a matrix, ZnO nanoparticles are added, a periodic microprism structure is processed on the surface, and uniform diffusion of light is realized. When applied to a lamp box, the light source is turned off to present a pure black appearance, and when turned on, the light source has high light transmittance and no mixed color, and is suitable for high-end advertisement display screens, vehicle-mounted lamp boxes and other scenes.

The invention discloses a Joule heat heating-based YAG transparent ceramic rapid welding method, and belongs to the technical field of welding. According to the method, a Joule heat ultra-fast high-temperature heating method is utilized, and a glass solder is adopted for connecting YAG transparent ceramics, so that a joint with high strength and high light transmittance is obtained. The method specifically comprises the following steps: carrying out grinding and polishing treatment on the YAG ceramic surface; the preparation method comprises the following steps: weighing oxide raw materials according to the composition of the glass material, uniformly mixing, and preparing glass powder by adopting a melting-water quenching method; preparing the glass powder into slurry, and uniformly coating the surface of the transparent YAG ceramic with the slurry; and placing in an ultra-fast high-temperature sintering furnace for connection. According to the Joule heat ultra-fast high-temperature connection YAG transparent ceramic, connection is completed within one minute through the fast heating and cooling process, a connector with high strength and high light transmittance is obtained, and the production efficiency is greatly improved.

The application discloses melamine resin / nano-silica composite microspheres, a preparation method thereof, and a light diffuser and optical material, and relates to the technical field of organic-inorganic composite materials. The method uses branched nano-silica and large-particle-size spherical nano-silica as a balling aid, and utilizes melamine and formaldehyde to polymerize in an aqueous phase to prepare the composite microspheres, without using a dispersant or an alcohol organic solvent. The obtained microspheres have a rough surface morphology similar to a litchi shell, and exhibit excellent high-haze and high-transmittance performance when used as the light diffuser. The preparation method is simple, low in cost, suitable for industrial production, and can be widely used in the fields of LED lighting and liquid crystal display.

The invention discloses a near-net-shape preparation process of high-light-transmittance large-size magnesium aluminate spinel ceramic, and belongs to the technical field of preparation of high-performance transparent ceramic. The process comprises the following steps: firstly, mixing magnesium aluminate spinel raw material powder with a lithium-free composite sintering aid according to a mass ratio, wherein the composite sintering aid consists of magnesium fluoride, ytterbium fluoride and ytterbium oxide according to a molar ratio; performing cold isostatic pressing on the mixed powder to prepare a preformed blank, crushing, and performing high-low pressure circulation pressurization near-net forming. The obtained green body is firstly subjected to hot pressing and presintering, then placed in a fluorine-containing atmosphere to be treated and finally subjected to hot isostatic pressing sintering, and a finished product is obtained through aftertreatment. According to the technology, the bottleneck of large-size component preparation is successfully overcome, net forming of the magnesium aluminate spinel ceramic with the diagonal size larger than 400 mm is achieved, the light transmittance of a finished product in the wavelength range of 400 nm to 800 nm exceeds 93%, the breaking strength reaches 194 MPa or above, and meanwhile the raw material cost and equipment dependence are remarkably reduced.

The invention belongs to the technical field of protective films, and particularly relates to a bending-resistant high-light-transmittance protective film for a folding screen and a preparation process of the bending-resistant high-light-transmittance protective film. The bending-resistant high-light-transmittance protective film sequentially comprises a release layer, an OCA optical adhesive layer, a flexible base material layer A, a flexible base material layer B, a silica gel layer and a protective layer from top to bottom, wherein raw materials of the flexible base material layer A and the flexible base material layer B both contain organic and inorganic hybrid particles, and the content of the organic and inorganic hybrid particles in the raw materials of the flexible base material layer A is larger than that of the organic and inorganic hybrid particles in the raw materials of the flexible base material layer B. The bending-resistant high-light-transmittance protective film for the folding screen is excellent in bending resistance, especially low-temperature bending resistance, light transmittance and hardness.

The invention relates to the technical field of photovoltaic packaging materials, and discloses a modified POE photovoltaic packaging adhesive film, a preparation method thereof and a photovoltaic module. The modified POE photovoltaic packaging adhesive film is prepared from 60 to 100 parts of POE resin, 8 to 50 parts of barrier master batch, 0.5 to 2 parts of composite silane coupling agent, 0.5 to 1.5 parts of cross-linking agent and 0.2 to 2 parts of assistant cross-linking agent, the barrier master batch comprises 5-30 parts of polar functionalized grafted POE and 3-20 parts of a barrier agent; the blocking agent is a cycloolefin copolymer COC with Tg less than or equal to 120 DEG C. The modified POE photovoltaic packaging adhesive film has the advantages of high light transmittance, PID resistance and the like of the existing POE adhesive film, and also has high bonding strength and low water vapor transmittance to photovoltaic glass; the problems of adhesion, water resistance and light transmittance of the POE adhesive film are solved synergistically, the inherent processing compatibility problem between COC and a POE substrate is solved, and a foundation is laid for improving the long-term reliability of a photovoltaic module.

The invention relates to the field of glass, in particular to lithium-free alkali aluminosilicate glass as well as a preparation method and application thereof. According to the glass, SiO2, Al2O3, Na2O, K2O, MgO and ZrO2 serve as main components, the content of Li2O is lower than 100 ppm, a nitrate-sulfate-carbon powder composite clarifying agent is adopted, the number of bubbles and the content of residual sulfur are effectively reduced, and use of a toxic or ultraviolet absorption type clarifying agent is avoided. ZrO2 is obtained by calcining a zirconium-based metal-organic framework material and is good in dispersity, and the devitrification resistance is improved. During float forming, through micro-positive pressure, high-purity protective atmosphere and four-zone gradient temperature control, the tin penetration depth is controlled within 15 microns, and the surface tin content is smaller than or equal to 4 micrograms / cm < 2 >. The obtained glass has high light transmittance, high hardness and excellent chemical strengthening performance, and is suitable for the high-end fields of electronic display cover plates, vehicle-mounted screens, touch panels, photovoltaic substrates and the like.

A transparent, chemically prestressable or chemically prestressed glass ceramic has a high transmittance, a low haze and a high crystal phase content of keatite solid solution. A method of making such a glass ceramic includes producing a silicate green glass with a melting process and subsequent hot shaping, temperature treating the silicate green glass with at least one nucleation step carried out in the temperature range of 690° C. to 850° C. for a period of 5 min to 72 h and at least one ceramization step carried out in the temperature range of 780° C. to 1100° C. for a period of 3 min to 150 h, and performing at least one ion exchange in an exchange bath at a temperature of the exchange bath between 370° C. and 500° C. for a period of between 2 hours and 50 hours.

This specification discloses a light control film and a display device to which the light control film is applied. The light control film, when applied to a display device, enables precise control of the light output angle, ensuring high transmittance, high brightness, and excellent resolution within the light output angle, and blocking unwanted light that can cause defects such as ghosts or moire. Even when applied to an OLED display, the light control film exhibits the above-mentioned performance without causing defects such as stripes that are noticeable to a viewer. This specification also discloses a display device to which the light control film is applied.