A method for manufacturing a liquid crystal aligning film includes preparing a multilayer structure in which a substrate, a conductive layer, a liquid crystal alignment layer, and a passivation film are sequentially provided, etching one area of the liquid crystal alignment layer by irradiating a pulse laser to the multilayer structure, and exposing one area of the conductive layer by removing the passivation film, wherein the pulse laser is irradiated to the liquid crystal alignment layer from the passivation film. The method is compatible with a continuous process.

A multilayer optical film includes alternating layers of first and second optical layers; the first optical layer comprising a first polyester, wherein the first polyester comprises first dicarboxylate monomers and first diol monomers, and from about 0.25 to less than 10 mol % of the first dicarboxylate monomers have pendant ionic groups; the second optical layer comprising a second polyester; and wherein the first and second optical layers have refractive indices along at least one axis that differ by at least 0.04. The multilayer optical film may be a polarizer film, a reflective polarizer film, a diffuse blend reflective polarizer film, a diffuser film, a brightness enhancing film, a turning film, a mirror film, or a combination thereof. The multilayer optical film may also be a transaction card such as a financial transaction card, an identification card, a key card, or a ticket card. A method of making the multilayer film is also disclosed.

A phase difference film including an orientation layer formed of a resin C having a negative intrinsic birefringence value, wherein the resin C contains a block copolymer having a block (A) including as a main component a polymerization unit A having a negative intrinsic birefringence value and a block (B) including as a main component a polymerization unit B, and a weight fraction of the block (A) therein being 50% by weight or more and 90% by weight or less, and the phase difference film has an NZ factor of greater than 0 and smaller than 1; and the production method thereof. Preferably, in the orientation layer, the resin C exhibits a phase separation structure, and a distance between phases in the phase separation structure is 200 nm or less.

Described herein are articles and methods of making articles, including a transparent composite film having a fiber filler embedded in a polymer network and further including a hard coating. The polymer network of the film is a cured, cross-linked matrix. The hard coating is a cross-linked aromatic urethane acrylate oligomer and a photoinitiator and provides a flexible protective layer that maintains good hardness, puncture-resistance and scratch-resistance.

Retroreflective sheeting having a structured layer of cube corner elements and an at least one optically variable mark therein, and methods of making same.

A polymethacrylate composition, an optical device made therefrom, and a display apparatus are provided. The polymethacrylate composition includes 50 to 85 parts by weight of methacrylate series polymer, 15 to 50 parts by weight of styrene series-maleic anhydride series copolymer, and an aromatic compound having a phosphite group. The methacrylate series polymer includes methacrylate series monomer unit and acrylate series monomer unit and has a weight average molecular weight (Mw) in a range between 20,000 and 200,000. The styrene series-maleic anhydride series copolymer includes 65 wt %-85 wt % of styrene series monomer unit, 15 wt %-35 wt % of maleic anhydride series monomer unit, and 0-20 wt % of second copolymerizable monomer unit. The content of the aromatic compound having a phosphite group in the polymethacrylate composition is 200 ppm-900 ppm.

The present invention provides an optical film containing an additive. The optical film includes a high concentration portion containing the additive, and a low concentration portion containing the additive at a concentration lower than the high concentration portion. The low concentration portion is provided on both sides of the high concentration portion in a thickness direction of the optical film, and the low concentration portion is provided on both sides of the high concentration portion in a width direction of the optical film.

Provided are: an optical Elm that has a good appearance, small in-plane retardation Re, and large thickness-direction retardation Rth; and a method for producing such an optical film. Also provided is a multilayer optical film that uses the optical film, that exhibits little change in retardation as a result of wavelength, and that has small retardation at low wavelengths. The optical film is obtained by sandwiching a melted resin between a first cooling roll comprising an elastic metal roll and a second cooling roll comprising a non-elastic metal roll and molding said melted resin. The optical film has a good appearance, the absolute value of the in-plane retardation Re thereof is 10 nm or less, and the thickness-direction retardation Rth thereof is 40 nm or more.

The present disclosure provides an optical compensation film, a photomask, and an exposure apparatus. The optical compensation film includes a first region of the optical compensation film and a second region of the optical compensation film. The first region of the optical compensation film is positioned to correspond to an overlapping portion of the prisms, and is configured to allow light to pass therethrough and impinge on the overlapping portion of the prisms. The second region of the optical compensation film is positioned to correspond to a non-overlapping portion of the prisms, and is configured to allow light to pass therethrough and impinge on the non-overlapping portion of the prisms. Light transmittance of the first region of the optical compensation film is greater than light transmittance of the second region of the optical compensation film.

An optical assembly, comprising:a first optical film; an adhesive layer, wherein the adhesive layer is disposed on the first optical film, wherein the adhesive layer comprises a plurality of light-diffusing particles therein; and a second optical film comprising a plurality of microstructures that are boned to the adhesive layer without penetrating into the adhesive layer.