38results about How to "Excellent anti-reflection function" patented technology

An antireflective member according to the present invention has an uneven surface pattern, in which unit structures are arranged in x and y directions at respective periods that are both shorter than the shortest wavelength of an incoming light ray, on the surface of a substrate and satisfies the following Inequality (1): Λ⁢ ⁢x,yλmin<1ni+ni·sin⁢ ⁢θ⁢ ⁢imax(1)where λmin is the shortest wavelength of the incoming light ray, θimax is the largest angle of incidence of the incoming light ray, ni is the refractive index of an incidence medium, Λx is the period of the uneven surface pattern in the x direction, and Λy is the period of the pattern in the y direction. As a result, diffraction of short-wave light components can be reduced in a broad wavelength range.

A curing resin composition which enables formation of an antireflection layer having good antiscratchability and a cured film obtained from such a curing resin composition are disclosed. The curing resin composition contains (A) a siloxane oligomer having an average molecular weight of 500-10000 in terms of ethylene glycol and (B) a fluorine compound having a number-average molecular weight of 5000 or more in terms of polystyrene and having a fluoroalkyl structure and a polysiloxane structure.

An anti-reflection microstructure including: convex portions arranged at a pitch shorter than a wavelength of visible light, each of the convex portions having a conic shape defined by an apex, a lateral surface, and a base, wherein an intersecting line between the lateral surface and a plane which passes through the apex and is perpendicular to the base, is equivalent to a curve expressed by an nth-order linear formula in which 1<n≦3.

Provided is a circularly polarizing plate for an organic EL display apparatus, which has a high barrier function, is extremely thin, and has an excellent antireflection function. The circularly polarizing plate for an organic EL display apparatus of the present invention includes in this order: a polarizer; a retardation layer, which is configured to function as a λ / 4 plate; a barrier layer; and a pressure-sensitive adhesive layer, which has a barrier function, in which the barrier layer includes thin glass having a thickness of from 5 μm to 100 μm.

The present invention provides such a formation method that an antireflection structure having excellent antireflection functions can be formed in a large area and at small cost. Further, the present invention also provides an antireflection structure formed by that method. In the formation method, a base layer and particles placed thereon are subjected to an etching process. The particles on the base layer serve as an etching mask in the process, and hence they are more durable against etching than the base layer. The etching rate ratio of the base layer to the particles is more than 1 but not more than 5. The etching process is stopped before the particles disappear. It is also possible to produce an antireflection structure by nanoimprinting method employing a stamper. The stamper is formed by use of a master plate produced according to the above formation method.

An object of the present invention is to provide a polarizing element which has an excellent antireflection function as being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has the polarizing element. The polarizing element of an embodiment of the present invention has an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, and an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 to 2.0.

The invention discloses an optical component and a timepiece. The optical component includes: a base material and an antireflection film, which includes a titanium oxide layer composed mainly of titanium oxide and containing at least one element selected from the group consisting of Nb, Si, Zr, Ta, Al, and Hf as an accessory component, and a silicon oxide layer composed mainly of silicon oxide. The element as the accessory component is preferably an element which constitutes a composite oxide with titanium. The content of the accessory component in the titanium oxide layer is preferably 0.01 mass% or more and 1.0 mass% or less.

Provided is an optical laminate that has an excellent anti-reflective function despite being provided with a substrate having optical anisotropy (also referred to below as an anisotropic substrate). The optical laminate comprises the following in this order: a polarizing plate including a polarizer and a protective layer arranged on at least one side of the polarizer; a first retardation layer; asecond retardation layer; a conductive layer; and a substrate. The in-plane retardation Re(550) of the substrate is larger than 0 nm and the angle formed by the slow axis of the substrate and the slowaxis of the second retardation layer is either -5 degrees to 5 degrees or 85 degrees to 95 degrees.

Provided is a method of depositing a low-refractive-index film, by which a thin film having uniform composition distribution in the film and having a low refractive index can be formed, a low-refractive-index film deposited by the method of depositing a low-refractive-index film, and furthermore, an antireflection film including the low-refractive-index film. In a method of depositing a low-refractive-index film including depositing a low-refractive-index film composed of MgF2—SiO2 on a substrate 11 by a reactive sputtering method, sputtering deposition is conducted using targets 4A and 4B composed of a sintered body of MgF2—SiO2 by applying an alternating voltage with a frequency in the range of 20 to 90 kHz between the substrate 11 and the targets 4A and 4B in an atmosphere of a mixed gas of an inert gas O2.

The present invention disclosed an optical laminate that can realize excellent contrast and image visibility. The optical laminate comprises: a light transparent base material; and an antistatic agent-containing hardcoat layer and a lower-refractive index layer provided in that order on the light transparent base material, wherein the optical laminate has a black luminance of not more than 9.3 cd / m2, and the optical laminate has a total light transmittance of not less than 80% and not more than 94%.

The invention discloses a scratch-resistant anti-reflection film which is obtained by the following steps of coating a base material with a hardened layer coating liquid, heating and curing at 60-80 DEG C until the surface is dry to form a hardened layer, then coating the hardened layer with an anti-reflection layer coating liquid, heating and curing at 80-150 DEG C for at least 1 min, and carrying out UV curing to form an anti-reflection layer. The UV curing energy is more than 600 mJ / cm<2>. The hardened layer is prepared from the following material components in parts by weight: 100 parts of dual-cured resin, 1-10 parts of a photoinitiator, 1-10 parts of isocyanate, 5-40 parts of blocked isocyanate, 100-850 parts of a solvent and 0.5-10 parts of other auxiliaries; the anti-reflection layer is prepared from the following material components in parts by weight: 100 parts of light-cured resin, 10-80 parts of hollow nano silicon dioxide particles, 4000-10000 parts of a solvent and 1-10 parts of other auxiliaries. The anti-reflection film has the advantages of excellent anti-reflection function, strong interlayer adhesive force of the anti-reflection layer and strong scratch resistance.

The invention provides an optical laminate that has an excellent anti-reflective function despite being provided with a substrate having optical anisotropy (also referred to below as an anisotropic substrate). The optical laminate comprises the following in this order: a polarizing plate including a polarizer and a protective layer arranged on at least one side of the polarizer; a retardation layer; a conductive layer; and a substrate. The in-plane retardation Re (550) of the substrate is larger than 0 nm and the angle formed by the slow axis of the substrate and the slow axis of the retardation layer is either -40 degrees to -50 degrees or 40 degrees to 50 degrees.

An optical component includes: a base material; and an antireflection film, which includes a titanium oxide layer composed mainly of titanium oxide and containing at least one element selected from the group consisting of Nb, Si, Zr, Ta, Al, and Hf as an accessory component, and a silicon oxide layer composed mainly of silicon oxide. The element as the accessory component is preferably an element which constitutes a composite oxide with titanium. The content of the accessory component in the titanium oxide layer is preferably 0.01 mass % or more and 1.0 mass % or less.

This invention provides a method for low-refractive index film formation, which can form a thin film having a uniform composition distribution within the film and a low-refractive index, a low-refractive index film formed by the method for low-refractive index film formation, and an antireflection film using the low-refractive index film. The method for low-refractive index film formation comprises forming a low-refractive index film formed of MgF2-SiO2 on a substrate (11) by reactive sputtering. Targets (4A, 4B) as a sinter of MgF2-SiO2 are provided. An alternating voltage having a frequencyof 20 to 90 kHz is applied across the substrate (11) and the targets (4A, 4B) under a mixed gas atmosphere composed of inert gas and O2 for sputtering deposition.

Provided is a circularly polarizing plate for an organic EL display apparatus, which has a high barrier function, is extremely thin, and has an excellent antireflection function. The circularly polarizing plate for an organic EL display apparatus of the present invention includes in this order: a polarizer; a retardation layer, which is configured to function as a λ / 4 plate; a barrier layer; and a pressure-sensitive adhesive layer, which has a barrier function, in which the barrier layer includes thin glass having a thickness of from 5 μm to 100 μm.

An optical information recording medium has: a substrate; one, two or more information signal layers which is formed on the substrate; and a protective layer which is formed on the one, two or more information signal layers. The surface of the protective layer is a reading surface on which light for recording or playing back an information signal in the information signal layer is radiated, and, in the reading surface, a plurality of subwavelength structures is formed.

The invention relates to a weather-resistant closed-pore antireflection coating, and a preparation method and an application thereof. The coating contains composite nanoparticles having a core-shell structure and formed by coating spherical hyperbranched resin particles with silicon oxide having a network-shaped structure, the coating forms , a coating layer on a base material, the coating layer is thermally cured, then the core formed by the hyperbranched resin in the composite nanoparticles is burnt out, the remaining hollow silicon oxide shell is hollow nanoparticles and a pore structure (agap) between the hollow nanoparticles, and the gap between the hollow nanoparticles on the surface of the coating layer is filled with silicon oxide to form a closed pore structure, so the weather resistance of the coating layer is improved while improving the transmittance of the coating. The coating has the excellent antireflection function, and also has the remarkable advantages of simple process, high weather resistance, high cost performance and the like.

An object of the present invention is to provide a polarizing element which has an excellent antireflection function in a case of being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has the polarizing element. The polarizing element of an embodiment of the present invention is a polarizing element having an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which the alignment film is a photoalignment film formed using a composition for forming a photoalignment film, including a photoactive compound having a polymerizable group and a photoreactive group, a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, and an average refractive index nave at a wavelength of 400 to 700 nm of the alignment film is 1.55 to 2.0.

There is provided a circularly polarizing plate for an organic EL display apparatus, which has an excellent antireflection function and has an excellent organic EL panel-protecting function. A circularly polarizing plate according to the present invention is used in an organic EL display apparatus. The circularly polarizing plate includes in this order: a polarizer; a retardation layer functioning as a λ / 4 plate; a barrier layer; and a pressure-sensitive adhesive layer having a barrier function. An angle formed between an absorption axis of the polarizer and a slow axis of the retardation layer is from 35° to 55°.

Provided is an optical laminate in which an electrically conductive layer is formed directly on a phase difference layer, the optical laminate being very thin, having an exceptional reflection-preventing function, and furthermore being capable of exhibiting exceptional display characteristics even when applied to a curved part of an image display device. This optical laminate is provided with a polarizer, a phase difference layer bonded to the polarizer, and an electrically conductive layer formed directly on the phase difference layer. The phase difference layer has an in-plane phase difference Re(550) of 100-180 nm, and satisfies the relationship Re(450)<Re(550)<Re(650), the glass transition temperature (Tg) being 150DEGC or higher, and the absolute value of the photo-elastic coefficientbeing 20*10<-12>(m2 / N) or lower. The angle formed by the slow axis of the phase difference layer and the absorption axis of the polarizer is 35-55DEG.

The invention relates to a weather-resistant closed-cell anti-reflection coating, a preparation method and application thereof. The coating of the present invention contains composite nanoparticles with a core-shell structure formed by coating spherical hyperbranched resin particles with network structure silicon oxide. After the coating is thermally cured on the substrate, the composite nanoparticles are composed of hyperbranched resin The formed core will be burned away, leaving the hollow silica shell, namely the hollow nanoparticles and the pore structure (that is, the void) between the hollow nanoparticles, and the voids between the hollow nanoparticles on the coating surface are filled with silica. Closed cell structure, so as to achieve the effect of increasing the coating's transmittance while increasing the coating's weather resistance. The coating of the invention not only has an excellent anti-reflection function, but also has significant advantages such as simple process, high weather resistance and high cost performance.

The invention discloses a nano anti-reflection coating liquid and a preparation method and application thereof.A formula of the nano anti-reflection coating liquid comprises the following components according to parts by weight: 0.1-5 parts of nanoparticles, 0.1-20 parts of a pore-forming agent, 0.1-5 parts of an adhesion promoter, 0.01-10 parts of an aid, and 80-99 parts of a solvent.The preparation method of the invention comprises: grinding and dispersing the nanoparticles in the solvent where the adhesion promoter and the aid are dissolved, and composting with the pore-forming agent, the aid and the like to obtain the nano anti-reflection coating liquid; the coating liquid can be applied to surfaces of different transparent substrates via various construction coating processes, and an anti-reflection coating is formed on the surface of each substrate after high-temperature baking.

The present invention provides an optical laminate having an excellent antireflection function despite having a substrate having optical anisotropy (hereinafter also referred to as an anisotropic substrate). The optical laminated body of the present invention has a polarizing plate including a polarizer and a protective layer disposed on at least one side of the polarizer, a first retardation layer, a second retardation layer, a conductive layer, and a substrate in order, and the substrate The in-plane retardation Re(550) of the material is greater than 0 nm, and the angle formed by the slow axis of the substrate and the slow axis of the second retardation layer is -5°-5° or 85°-95°.

An optical component includes a base material and a film containing silica particles and conductive transparent metal oxide particles. The conductive transparent metal oxide particles are preferably composed of SnO2. The number-based average particle diameter of the conductive transparent metal oxide particles is preferably 0.8 nm or more and 5.0 nm or less. When the content of the silica particles in the film is represented by Xs (vol %) and the content of the conductive transparent metal oxide particles in the film is represented by Xc (vol %), it is preferred to satisfy the following relationship: 0.003≦Xc / Xs≦0.12.

The present invention provides a composition for an antireflection film, an antireflection film formed therefrom, a polarizing plate comprising the same, and an optical display device comprising the same, the composition containing a compound of Chemical Formula 1, a UV curable compound , antistatic agent and initiator.

The present invention provides a light emitting device that can be used as a light guide plate and has an excellent anti-reflection function for external light. In order to solve the above-mentioned problems, according to a certain viewpoint of the present invention, an optical body is provided, which includes: a base material; The inner propagating light to the inside of the substrate is emitted from the other surface of the substrate; and a fine concave-convex structure which is periodically formed following both surfaces of the substrate and a surface of a coarse concave-convex structure, the average period of the concave-convex is below the wavelength of visible light The surface of the coarse concave-convex structure has an inclined surface inclined at an angle of not less than 30° and less than 90° with respect to one surface, and the arrangement of the fine concave-convex structure is arranged in a staggered manner with respect to the traveling direction of internal propagating light.

The invention is to provide a light-emitting device capable of being used as a light guide plate and having excellent anti-reflective functionality against external light. To solve the aforementionedproblem, one aspect of the present invention provides an optical body comprising: a base material; a macro-uneven structure formed on one surface of the base material and emitting, from the other surface of the base material, internally-propagated light that is light which has entered inside the base material from a side of the base material; and a micro-uneven structure formed periodically alongboth surfaces of the base material and the surface of the macro-uneven structure and having the average period of unevenness being at or below a wavelength of visible light. The surface of the macro-uneven structure has an inclined surface that is inclined by at least 30 degrees to less than 90 degrees with respect to the one surface of the base material, and the micro-uneven structure is arrangedin a staggered pattern relative to the traveling direction of the internally-propagated light.