Lg Chem, Ltd

Korex Corporation

Ho Kyung Lee

Kyu Hwang Lee

Eung Jin Jang

Kee-Kahb Koo

Jae-Kyeong Kim

Soon Ki Heo

Chang Song Lee

Myung Jun Park

In Ju Lee

Eungki Lee

Daehyeon Kim

Joong Suk Nah

Joo-Sang Kim

In Gyoo Lee

Disclosed herein is a method of manufacturing two kinds of rectangular unit pieces having different optical properties from a base material sheet through cutting using a cutting frame including a cutter, the method including preparing a base material sheet having a large length to width ratio, the base material sheet exhibiting optical directivity in a longitudinal direction or in a lateral direction, preparing a cutting frame including at least on first cutter for cutting a first unit piece exhibiting optical directivity parallel to that of the base material sheet and at least one second cutter for cutting a second unit piece exhibiting optical directivity perpendicular to that of the base material sheet, the first cutter and the second cutter being arranged adjacent to each other in the lateral direction of the base material sheet, and sequentially cutting the base material sheet using the cutting frame in the longitudinal direction of the base material sheet to simultaneously manufacture the first unit piece and the second unit piece.

Method for manufacturing rectangular pieces with high cutting efficiency

An apparatus for controlling a color of a film includes a dyeing bath to dip a washed PVA film in an aqueous iodine solution and an aqueous potassium solution and then dye the PVA film therewith, a complementary bath to dip the PVA film in an aqueous potassium solution and then dye the PVA film therewith, a device oven to dry the PVA film having the oriented iodine and potassium, a 4-stage oven to dry the PVA film dried in the device oven, and a central controller to predict a color value of the polarizing film.

Apparatus for controlling color of polarizing film and method of controlling the same

Disclosed herein is a device for cutting a glass sheet, continuously supplied after a melting and solidification process, into quadrangular glass substrates. The glass sheet cutting device includes two or more cutters for cutting a glass sheet into quadrangular glass substrates, a defect inspector for scanning the glass sheet to three-dimensionally check defect positions in a length direction, a width direction and a thickness direction of the glass sheet, a position adjuster for moving at least one of the cutters to a portion of the glass sheet at which few defects are distributed, and a controller for informing the position adjuster of positions of the cutters based on the scanned results received from the defect inspector.

Device for cutting of glass sheet

In a system for recycling a high-boiling-point waste photoresist stripper generated in processes of manufacturing LCDs or semiconductor devices, wherein an expensive high-boiling-point stripper solvent can be easily recycled at high yield and high-purity electronic grade. This system includes a first distillation device for removing low-boiling-point impurities, a second distillation device for recycling a stripper solvent composition while removing high-boiling-point impurities, a third distillation device for removing trace water, thus recovering the stripper solvent composition, a fourth distillation device for additionally recycling a stripper solvent, thus additionally recovering a high-boiling-point stripper solvent, and a fifth distillation device for sequentially and separately recovering the stripper solvent composition recovered by the second distillation device and the high-boiling-point stripper solvent additionally recovered by the fourth distillation device.

System and method for recycling high-boiling-point waste photoresist stripper

In a system and method for recycling a high-boiling-point waste photoresist stripper generated in processes of manufacturing LCDs or semiconductor devices, an expensive high-boiling-point stripper solvent can be easily recycled at high yield and high-purity electronic grade. This system includes a first distillation device for removing low-boiling-point impurities, a second distillation device for recycling a stripper solvent composition while removing high-boiling-point impurities, and a third distillation device for removing trace water, thus recovering the stripper solvent composition, and further includes a fourth distillation device for additionally recycling a stripper solvent, thus additionally recovering a high-boiling-point stripper solvent, and this method includes removing low-boiling-point impurities, recycling a stripper solvent composition while removing high-boiling-point impurities, and removing trace water, thus recovering the stripper solvent composition, and further includes additionally recycling a stripper solvent.

Disclosed herein is an apparatus for preparation of a film exhibiting polarizing properties by dyeing a substrate film with iodine and then orienting the same through a continuous process, comprising a first bath equipped with a thermometer to measure a temperature of the first bath; a second bath equipped with a thermometer to measure a temperature of the second bath and a densitometer to measure a concentration of the second bath; a third bath in which the iodine-dyed PVA film is stretched by a drawing roller; an oven equipped with a thermometer to measure a temperature of the oven; and a central controller that predicts a transmittance of the polarizing film, and then, controls the temperatures of the first and second baths and the oven and an amount of a composition fed to the second bath.

Growing community of inventors

Daejeon, South Korea

Ho Kyung Lee