Lg Chem, Ltd

Sung Yoon Lee

Dong Hyun Oh

Doo Young Huh

Nam Gyu Kim

Keon Woo Kim

Hyung Il Yang

Woo Yong Cho

Beom Jin Lee

Sang Jo Bae

Kee Young Lee

Jae Hong Park

Kyung Gu Lee

A method of manufacturing a light modulation device is disclosed herein. In some embodiments, a method comprises transferring a first substrate between a first unwind roll and a take-up roll, wherein an adhesive layer is disposed on the a first surface of the first substrate, transferring a second substrate between a second unwind roll and the take-up roll, wherein the second substrate includes a spacer and a liquid crystal alignment film formed on a first surface of the second substrate during the transfer and prior to an attachment with the adhesive layer of the first substrate, and attaching the first and second substrates via respective first surfaces thereof by passing the first and second substrates through an opening between adjacent attachment rolls to form a light modulation device.

Manufacturing method of light modulation device

The present application provides an optical film. By controlling transmittance of a liquid crystal layer comprising a radical initiator for the maximum absorption wavelength of the radical initiator, the present application can provide an optical film having a liquid crystal layer having excellent resistance to external stimuli and excellent optical properties. Such an optical film can have various forms and can be used in various fields.

Optical film

Growing community of inventors

Daejeon, South Korea

Sung Yoon Lee