摘要:
There is provided by the invention a retardation film stably exhibiting excellent optical properties over a long period of time. The retardation film of the invention is a retardation film comprising (A) a cycloolefin resin and (B) inorganic particles which have a longer diameter and a shorter diameter and exhibit shape anisotropy, a refractive index of which in the longer diameter direction is larger than an average refractive index of which in the direction crossing the longer diameter direction at right angles and which exhibit birefringence, wherein the inorganic particles (B) are orientated and the retardation film has a difference in refractive index between the film plane direction and the film thickness direction.
摘要:
[Problems] To provide an optical film for a liquid crystal display, in which a wide range of a retardation of transmitted light can be controlled in manufacturing and good viewing angle compensation effects on such as preventing light leakage or color dropout (coloring) in true black display and achieving a high contrast in all directions can be obtained when used in liquid crystal display.[Means for Solving Problems] The optical film of the invention includes a film (a) layer made of a cyclic olefin resin and a film (b) layer made of a polyimide resin or a polyetherimide resin, wherein following formulae (1) and (2) are preferably satisfied: (1) 200 nm≦Rth≦1,000 nm and (2) 0≦R550≦200 nm, wherein Rth and R550 represent the retardation in the direction of film thickness and the in-plane retardation of the film, respectively, at wavelength of 550 nm.
摘要:
The present invention is intended to provide wave plates which have excellent initial properties, are hardly influenced by the usage environment or the production environment and have excellent long-term reliability. The first wave plate of the invention is a wave plate comprising two or more retardation films, wherein the retardation films are not bonded to each other in the laser beam transmission area and further they are bonded to each other in at least a part of other area than the laser beam transmission area. The second wave plate is a wave plate comprising at least two retardation films which are laminated on each other, on at least one surface of said laminated retardation films a glass substrate being laminated, wherein the retardation films, and the retardation film and the glass substrate are lamination-fixed respectively with different adhesives which are selected from an adhesive (A) having a glass transition temperature of not higher than 0° C. and a Young's modulus at 23° C. of not more than 10 MPa and an adhesive (B) having a glass transition temperature of not lower than 40° C. and a Young's modulus at 23° C. of not less than 30 MPa (with the proviso that a difference in glass transition temperature between the adhesive (A) and the adhesive (B) is 60° C. or more and a difference in Young's modulus at 23° C. between the adhesive (A) and the adhesive (B) is 40 Mpa or more).
摘要:
[Problems] To provide an optical film for a liquid crystal display that has good viewing angle compensation effects such as preventing color dropout (coloration) and achieving high contrast in all directions when used in a liquid crystal display.[Means for solving problems] An optical film of the invention comprises at least one film (a) layer made of a cyclic olefin resin exhibiting positive birefringence and a film (b) layer made of a polymer exhibiting negative birefringence laminated on said film (a) layer, and satisfies (1) 0.1≦Nz-coefficient≦0.9, (2) 0.5≦R450/R550≦0.9, (3) 1.0≦R650/R550≦1.3 and (4) 200 nm≦R550≦350 nm; wherein R450, R550 and R650 represent the retardation R at wavelengths of 450 nm, 550 nm and 650 nm, respectively.
摘要:
The present invention is intended to provide wave plates which have excellent initial properties, are hardly influenced by the usage environment or the production environment and have excellent long-term reliability. The first wave plate of the invention is a wave plate comprising two or more retardation films, wherein the retardation films are not bonded to each other in the laser beam transmission area and further they are bonded to each other in at least a part of other area than the laser beam transmission area. The second wave plate is a wave plate comprising at least two retardation films which are laminated on each other, on at least one surface of said laminated retardation films a glass substrate being laminated, wherein the retardation films, and the retardation film and the glass substrate are lamination-fixed respectively with different adhesives which are selected from an adhesive (A) having a glass transition temperature of not higher than 0° C. and a Young's modulus at 23° C. of not more than 10 MPa and an adhesive (B) having a glass transition temperature of not lower than 40° C. and a Young's modulus at 23° C. of not less than 30 MPa (with the proviso that a difference in glass transition temperature between the adhesive (A) and the adhesive (B) is 60° C. or more and a difference in Young's modulus at 23° C. between the adhesive (A) and the adhesive (B) is 40 MPa or more).
摘要:
An optical film has a film a formed of a cyclic olefin resin, and a homeotropically orientated optical anisotropic layer b disposed on the film a. This optical film preferably satisfies the below listed formulae (1) to (3). −600nm≦Rth≦200nm (1) 0nm≦R≦600nm (2) NZ≦1 (3) (In formulae (1) to (3), Rth indicates the retardation in the thickness direction of the optical film at a wavelength of 550 nm; R indicates the in-plane retardation of the optical film at a wavelength of 550 nm; and NZ indicates (nx−nz)/(nx−ny)).When the optical film is used in an ISP mode liquid crystal display device, light leakage and color fading (discoloration) during black display are prevented stably for a long term, and a good viewing angle compensation effect is obtained (i.e., high contrast ratio at all angles).
摘要:
A laminated wavelength plate including a cyclic olefin based resin film and a transparent crystal plate having optical anisotropy bonded to each other, wherein an angle defined by an optical axis of the cyclic olefin based resin film and an optical axis of the transparent crystal plate having optical anisotropy falls within the range of from 0 to 90 degrees. The laminated wavelength plate of the invention is a broadband wavelength plate (retardation plate) which is stable against heat, humidity and the like, is effective against plural laser beams having a different wavelength, and can be used as a wavelength plate for optical information recording and reproducing devices.
摘要:
The polarizing plate of the invention comprises a norbornene resin film, a polyurethane layer, an adhesive layer and a polarizing film which are laminated in this order. The polarizing plate exhibits excellent adhesion between the optical film and the polarizing film, is excellent also in properties such as heat resistance and chemical resistance, rarely suffers delamination and distortion even if it is used for a long period of time, and has high reliability. The polarizing plate can be obtained by, for example, a process comprising steps of forming a polyurethane layer on a surface of a norbornene resin film and bonding a polarizing film to the polyurethane layer through an adhesive.
摘要:
The polarizing plate of the invention comprises a norbornene resin film, a polyurethane layer, an adhesive layer and a polarizing film which are laminated in this order. The polarizing plate exhibits excellent adhesion between the optical film and the polarizing film, is excellent also in properties such as heat resistance and chemical resistance, rarely suffers delamination and distortion even if it is used for a long period of time, and has high reliability. The polarizing plate can be obtained by, for example, a process comprising steps of forming a polyurethane layer on a surface of a norbornene resin film and bonding a polarizing film to the polyurethane layer through an adhesive.
摘要:
An ion implantation device that suppresses diffusion of an ion beam, can finely control a scanning waveform, and can obtain a large scanning angle of about 10°. In the ion implantation device, first, second, and third chambers are arranged in predetermined places on a beam line, first and second gaps intervene between the first chamber and the second chamber and between the second chamber and the third chamber. The second chamber is electrically insulated from the first and third chambers via first and second electrode pairs attached to the first and second gaps, respectively. The first and second electrode pairs obliquely cross a standard axis of the ion beam at a predetermined angle in opposite directions, and the second chamber is connected to a scanning power source that applies an electric potential having a desired scanning waveform.