Abstract:
The purpose of the present invention is to provide: an adhesive composition for optical applications, which is capable of suppressing luminance unevenness without deteriorating the contrast characteristics in optical applications, and which can be used for optical members and prevents the optical members from separation in a reliability test; an adhesive layer; an optical member; an image display device and the like. An adhesive composition for optical applications, which contains a modified (meth)acrylic graft polymer and an isocyanate crosslinking agent, is prepared. The modified (meth)acrylic graft polymer is obtained by graft polymerizing chains, each of which contains a cyclic ether group-containing monomer, to the trunk polymer, and contains, as constituent components, an alkyl(meth)acrylate, a cyclic ether group-containing monomer, and an acyclic ether group-containing monomer. An adhesive layer for optical applications, which is formed from the composition, an optical member, an image display device and the like are also produced.
Abstract:
Disclosed is an optical sheet with an adhesive layer, which has excellent adhesion, excellent aggregability and excellent long-term durability, and wherein an adhesive layer part does not fill recesses and projections over time, said recesses and projections having been formed by processing. Specifically, an optical sheet with an adhesive layer is produced by arranging an adhesive layer on a recessed and projected surface of an optical film which has been subjected to processing for forming recesses and projections. In addition, the optical sheet with an adhesive layer is bonded to various light sources or image display elements, thereby obtaining light sources or image display devices that have improved light extraction efficiency without changing the designs of the light sources or image display elements, while securing uniform light emission and improving viewing angles especially in devices that comprises the image display elements.
Abstract:
A coating liquid for forming a polarizing film comprising a lyotropic liquid crystal compound (A) exhibiting light absorption characteristics in a visible light region having a wavelength 400 nm or longer, a lyotropic liquid crystal compound (B) exhibiting no or low light absorption characteristics in the visible light region having a wavelength 400 nm or longer and a solvent dissolving the lyotropic liquid crystal compound (A) and the lyotropic liquid crystal compound (B).
Abstract:
A light emitting device 1 includes a light emitting diode, a phosphor layer containing phosphors that emit a visible light by being excited by a light emitted from the light emitting diode, and a reflector disposed to surround the light emitting diode. A portion of 50% or more in an area ratio of a reflecting surface of the reflector is formed as a scattering surface with a mean square inclination (Δq) (0.1 mm) in a range of not less than 0.003 nor more than 0.03.
Abstract:
A white light source includes: an insulating substrate; a light-emitting diode chip provided on the insulating substrate and that emits ultraviolet light with a wavelength of 330 nm to 410 nm; and a phosphor layer formed to cover the light-emitting diode chip, including a red emitting phosphor, a green emitting phosphor, and a blue emitting phosphor as a phosphor, and the phosphors are dispersed in a cured transparent resin, wherein when it is assumed that the shortest distance between a surface of the phosphor layer and a peripheral portion of the light-emitting diode chip is t(mm) and the mean free path defined by the following expression (1) is L(mm), the t and L satisfy 3.2≦t/L. [Expression 1] L=1/(n×σ) (1) (n: number of phosphors per unit volume of the phosphor layer (pcs/mm3), and σ: average cross section area of a phosphor in the phosphor layer (mm2)).
Abstract translation:白光源包括:绝缘基板; 设置在绝缘基板上并发射波长为330nm〜410nm的紫外光的发光二极管芯片; 以及形成为覆盖发光二极管芯片的荧光体层,其包括红色发光荧光体,绿色荧光体和作为荧光体的蓝色荧光体,并且将荧光体分散在固化的透明树脂中,其中假定 荧光体层的表面与发光二极管芯片的周边部分之间的最短距离为t(mm),由下式(1)定义的平均自由程是L(mm),t和L 满足3.2≦̸ t / L。 [表达式1] L = 1 /(n×&sgr)(1)(n:荧光体层的每单位体积的荧光体的个数(pcs / mm3)),荧光体的荧光体的平均截面积 层(mm2))。
Abstract:
The present invention provides an optical refractive index-modifying polymer composition which can efficiently modulate (change) refractive index upon light irradiation, and exhibits such high storage stability that the once modulated refractive index does not substantially change anymore upon time elapse, and the optical refractive index-modifying polymer composition comprises as a main component a polymer (A) which is a polymer of monomers including an acrylic vinyl monomer represented by the following formula (1): CH2═C(R1)—C(═O)O—R2═CH2 (1) wherein R1 represents a hydrogen atom or a methyl group, R2 represents a saturated or unsaturated hydrocarbon group having 1 to 20 carbon atoms, and the molecule may contain a hetero atom or a halogen atom, as an essential component and contains a remaining radical-polymerizable side-chain vinyl group in the molecule, wherein the composition comprises a thermally curable polymer (B) in an amount of 5 to 60 parts by weight per 100 parts by weight of the polymer (A).
Abstract:
The present invention provides a thin and light-weight birefringent film having a desired Nz coefficient, such that an index ellipsoid satisfies a relationship of nx≧nz>ny.The birefringent film of the present invention contains a first acenaphtho[1,2-b]quinoxaline derivative exhibiting lyotropic liquid crystallinity and a second acenaphtho[1,2-b]quinoxaline derivative exhibiting lyotropic liquid crystallinity, wherein an index ellipsoid satisfies a relationship of nx≧nz>ny. An Nz coefficient of this birefringent film is preferably 0 to 0.5.
Abstract:
A process for producing a laminate comprises the steps of: coating a water solution containing water and a water-soluble liquid crystal compound on a surface of a substrate to form a coating film; and drying the coating film by placing the coating film in an atmosphere having 70% RH or higher to less than 100% RH to more than 10% by weight of the solvent in the coating film; wherein an optical anisotropic layer is formed on the surface of the substrate by exerting a regulating force on the water-soluble liquid crystal compound to orient the water-soluble liquid crystal compound in the drying process.
Abstract:
An information processing apparatus comprises a plurality of control units, a shared memory, a processing number table and a start-up time table. When a transaction is received, each of the control units determines whether the current time in the shared memory coincides with the most recent start-up time in the processing number. If the current time does not coincide with the most recent start-up time, each of the control units updates the most recent start-up time with current time and if or not, adds 1 to the number of transactions being processed in the processing number table so as to update the number of transactions being processed. After the number of transactions is updated, each of the control units sums up the number of transactions being processed in the processing number table. Each of the control units determines whether the number of transactions is not more than the threshold value in the shared memory. If the number of transactions is not more than the threshold value, each of the control units starts the distributed transaction to be processed.
Abstract:
A plurality of database hosts hold subscriber information in a distributed manner. A retrieval server processes inquires (host retrieval requests) on which of the database hosts has desired subscriber information stored therein. The retrieval server includes a plurality of processors, and the plurality of processors performs processing in parallel. Therefore, inquiries can be processed at a high speed. Further, a conversion information database and a host information database are provided as in-memory databases, which allow inquiry processes to be processed at a high speed. A call control server can efficiently acquire subscriber information from the database host based on the result of an inquiry made to the retrieval server.