Lg Chem, Ltd

Byoung Jun Mun

Nam Jeong Lee

Heon-Sik Song

Sei Jung Park

Joong Hoon Lee

Joonghoon Lee

Sung Ho Hwang

Sungho Hwang

Moon Soo Park

Jae Ho Jung

Hyuk Yoon

Jong Sung Park

Ji Sung Park

The present application relates to a circularly polarizing plate and a use thereof. The present application can provide a circularly polarizing plate, which can be applied to a display device such as an organic light emitting display device to minimize blocking of light in the visible light region affecting image quality while blocking harmful ultraviolet rays appropriately and also has excellent durability. In addition, the present application can provide a circularly polarizing plate having excellent compensation characteristics at a viewing angle while ensuring process simplification and cost competitiveness.

Circularly polarizing plate

The present application relates to a retardation film including a composition or a cured product thereof, the composition comprising: an acrylate-based resin having a glass transition temperature (Tg) of 120&#xb0; C.; or more; a retardation adjusting agent comprising a styrene monomer; and a triazine-based birefringence adjusting agent, in which the triazine-based birefringence adjusting agent is included in an amount of more than 5 parts by weight and 15 parts by weight or less, based on 100 parts by weight of the acrylate-based resin; a polarizing plate comprising the same, and a liquid crystal display device comprising the same.

Retardation film, polarizing plate comprising same, and liquid crystal display device comprising same

An exemplary embodiment of the present application relates to a retardation film including: an acrylate-based resin; a retardation adjusting agent having a glass transition temperature (Tg) of 130&#xb0; C. or more; and a composition comprising a triazine-based birefringence adjusting agent or a cured product thereof, in which the triazine-based birefringence adjusting agent is included in an amount of 5 parts by weight to 15 parts by weight, based on 100 parts by weight of the acrylate-based resin; a polarizing plate comprising the same, and a liquid crystal display device comprising the same.

Retardation film, polarizing plate comprising same, and liquid crystal display apparatus comprising same

The optical film according to the present invention uses polymethylmethacrylate that does not comprise cyclic monomers, but has excellent dimensional stability and optical properties, and thus, can be usefully used as a protection film of a polarization plate.

Optical film and polarization plate comprising the same

The resin composition for an optical material according to the present invention has features that it can implement a low retardation value during the preparation of an optical film, by using a polycarbonate composition satisfying a specific condition as a retardation-adjusting agent while using polymethyl methacrylate not containing a monomer having a cyclic structure at the main chain of the polymer.

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Daejeon, South Korea

Byoung Jun Mun