Abstract:
filme óptico, placa de polarização e dispositivo de tela de cristal líquido. trata-se de um filme óptico tendo uma pequena alteração de tamanho com uma alteração de temperatura de um suporte de um filme de retardamento de padrão. um filme óptico inclui: um suporte que compreende um polímero tendo uma permeabilidade à umidade de 0,5% ou maior; uma primeira região de retardamento e uma segunda região de retardamento, na qual a birrefringência desta é mutuamente diferente; e uma camada opticamente anisotrópica na qual a primeira região de retardamento e a segunda região de retardamento são alternadamente padronizadas a cada uma linha.
Abstract:
dispositivo de exibição de cristal líquido, método para fabricação do mesmo, e dispositivo de exibição de imagem. e fornecido um dispositivo de exibição de cristal líquido que diminui luzes bruxuleantes causadas por interferências de uma imagem tridimensional (uma sobreposição de imagens) ou reflexão de luz externa. um dispositivo de exibição de cristal líquido inclui um par de substratos, pelo menos um dos pares de substratos tendo um eletrodo e o par de substratos sendo colocado em lado oposto um ao outro, e uma primeira placa de polarização colocada em um lado da fonte de luz e uma segunda placa de polarização colocada em um lado da visão com a camada de cristal líquido intercalada entre elas, em que uma película protetor no lado da visão da segunda placa de polarização inclui um suporte transparente que satisfaz 0 re(550) 10 e uma camada oticamente anisotrópica tendo uma função rth 20.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical film having excellent durability and capable of reducing moisture permeability.SOLUTION: The optical film includes a base film comprising a thermoplastic resin and a low moisture permeable layer deposited on the base film; and the film has a moisture permeability of 200 g/m/day or less and satisfies an expression (1):A/B≤0.9. In the expression, A represents a moisture permeability of the optical film having the low moisture permeable layer deposited on the base film comprising the thermoplastic resin; B represents a moisture permeability of the base film comprising the thermoplastic resin; and the permeability is measured after the film is kept at 40°C and 90% relative humidity for 24 hours, in accordance with the procedure specified by JIS 0208.
Abstract:
PROBLEM TO BE SOLVED: To solve a problem of degradation in handling property associating with reduction in film thickness in a solution film-forming process.SOLUTION: A layered film is obtained by forming at least a retardation layer A (A layer) and B layer by solution co-casting process. In the film, the A layer has a thickness of 5 μm or more and 30 μm or less; the B layer has a higher elastic modulus than the A layer; and an interlayer release force between the A layer and the B layer is 0.05 N/cm or more and 5 N/cm or less.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical film that has a small photoelastic coefficient and a low haze, and is excellent in adhesion to a polarizer and interface adhesion between each layer when bonded by a conventional alkaline saponification method.SOLUTION: An optical film includes an "A" layer containing an acrylic resin having a weight average molecular weight exceeding a million, and a "B" layer containing a first cellulose acylate and a second cellulose acylate each having a different acyl substitution degree. A content ratio of the first cellulose acylate to the second cellulose acylate is 90/10 to 60/40 (mass ratio). The acyl substitution degree of the second cellulose acylate satisfies an expression (1) and at least one of expressions (2A) and (2B), with the expression (1): 2.55≤X+Y≤3.0; the expression (2A): 0.2≤Y≤1.2; and the expression (2B): -0.075n+0.72≤DS(n)≤-0.33n+2.88, where "X" is an acetyl substitution of the second cellulose acylate; "Y" is a substitution degree of an acyl group with carbon number 3 to 7 in the second cellulose acylate; DS(n) is a substitution degree of an acyl group with carbon number "n" in the second cellulose acylate; and "n" is an integer between 3 to 7).
Abstract:
PROBLEM TO BE SOLVED: To provide an optical film having a low optical anisotropy (Re, Rth) to be substantially optical isotropic, having a narrow wavelength dispersion in the optical anisotropy (Re, Rth) and having a low optical anisotropy (Re, Rth) even when stretched or shrunk.SOLUTION: The optical film is characterized by comprising a cellulose acetate where Re(λ) and Rth(λ) satisfy the following formula, the acyl substituent consists of an acetyl group only, and the total substitution degree is 2.50 to 3.00. 0≤Re≤5 and |Rth|≤10, in which Reis a front retardation value (unit: nm) at a wavelength of λ nm and Rth(λ) is a retardation value (unit: nm) in the film thickness direction at a wavelength of λ nm.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical film in which display unevenness hardly occurs when other members in a liquid-crystal display come into contact with a cellulose ester film, its bonding to a polarizer is easy and the film plane conditions are excellent.SOLUTION: An optical film includes an acrylic resin layer including acryl resin and at least one cellulose acylate layer including cellulose acylate provided on the surface of the acrylic resin layer. The weight average molecular weight of the acryl resin used as the main component of the acrylic resin layer is 600,000 to 4,000,000.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical film which has little haze, achieves excellent lamination to a PVA polarizer, and reduces light leakage when assembled into a liquid crystal display device.SOLUTION: An optical film comprises a core layer containing a thermoplastic resin, and an outer layer containing cellulose acylate which is arranged at least on one side of the core layer. The outer layer contains a photoelastic coefficient reducing agent.