Lg Chem, Ltd

Lg Energy Solution, Ltd.

Jeong Yong Lee

Ji Eun Kim

Myung Han Lee

Dong Wook Lee

Chae Gyu Lee

Duck Joong Yun

Joon Sun Park

Hye Jin Han

Do Hyun Lee

Jin Ki Han

Jae Young Sung

Seung Ha Kim

Woo Jin An

Koo Youn Hwang

Won Hak Cho

Eui Seok Sa

Disclosed herein is a roundness measuring device and a roundness measuring method of a coating roll for battery manufacturing. The roundness measuring device of a coating roll that supports an electrode sheet when the electrode sheet is coated with an electrode slurry, the roundness measuring device comprising: a displacement sensor spaced apart from the coating roll and configured to measure roundness of the coating roll in a non-contact manner; and a support member on which the displacement sensor is installed and which extends in a length direction of the coating roll, wherein the displacement sensor is installed as a plurality of displacement sensors on the support member in the length direction of the coating roll.

Measurement device and measurement method for measuring roundness of coating roll for manufacturing battery

The present application provides a resin composition which effectively inhibits a photobleaching phenomenon as well as realizes excellent external blocking properties and optical properties through the secondary structure transition concentration and relaxation time of the resin composition, a reliability evaluation method thereof, and a color conversion film comprising the same.

Resin composition and reliability evaluation method thereof and color conversion film comprising the same

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Daejeon, South Korea

Jeong Yong Lee