Lg Chem, Ltd

Young Jee Song

Ji Young Choi

Min Hyung Lee

Bethy Kim

Sung-Ho Chun

Dai Seung Choi

Kyung Chang Seo

Hyeong Bin Jang

Da Jung Kim

Seongho Jeon

Dongmin Jeong

The present invention provides a polyimide copolymer containing repeating units having a specific structure derived from monomers synthesized from an epoxy compound, a method for preparing the polyimide copolymer, a photosensitive resin composition, a photosensitive resin film and an optical device including the same.

Polyimide copolymer, method for preparing the polyimide copolymer, photosensitive resin composition, photosensitive resin film, and optical device using the polyimide copolymer

The present invention relates to a branched copolymer having a polyimide polymer block bonded to each terminal of a branched polyamide functional group, and a photosensitive resin composition including the same, a photosensitive resin film, and an optical device.

Branched copolymer, and photosensitive resin composition, photosensitive resin film and optical device using the same

Provided are a polyhedral oligomeric silsesquioxane and a preparation method thereof, more particularly, a polyhedral oligomeric silsesquioxane itself which has a low refractive property and enables formation of a coating layer with excellent chemical and mechanical properties, and provides excellent adhesive strength for the surfaces of various substrates, and a preparation method thereof.

Polyhedral oligomeric silsesquioxane and preparation method thereof

The present invention relates to a method for preparing a polyhedral oligomer silsesquioxane. The preparation method includes the step of reacting a reaction mixture containing at least two types of silane compounds and a tetraalkylammonium hydroxide having 2 to 5 carbon atoms at a temperature of 5&#xb0; C. or below.

Method for preparing polyhedral oligomeric silsesquioxane

The present invention relates to a polymerizable liquid crystal compound, a liquid crystal composition including the same, and an optical film including the same. The polymerizable liquid crystal compound according to the present invention has at least two functional groups making intermolecular interaction possible in its molecule, and thus it is possible to form a liquid crystal layer having high orientation stability by coating the composition including the same. According to this, the optical film prepared by using the composition can be suitably used in anti-reflection films and so on for liquid crystal displays or OLED displays.

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Daejeon, South Korea

Young Jee Song