Lg Chem, Ltd

Eungjin Jang

Kyu Hwang Lee

Hokyung Lee

Yoomin Lee

Hoonyeol Kim

A method of cutting one or more kinds of quadrangular unit pieces having a relatively small size from a quadrangular base material having a relatively large size uses a cutter frame including a plurality of cutters to manufacture the quadrangular unit pieces. The method includes (a) scanning a quadrangular base material in a longitudinal direction and in a lateral direction to check positions of defects on the quadrangular base material, (b) calculating a yield when cutting the quadrangular base material using two or more kinds of cutting frames, (c) selecting one of the cutting frames in which the yield calculated at the calculation step (b) is within a range of upper 30%, and (d) cutting the quadrangular base material using the cutting frame selected at the selection step (c) to manufacture quadrangular unit pieces.

Process for preparation of quadrangle unit

Disclosed herein is a method of cutting one or more kinds of quadrangular unit pieces having a relatively small size from a quadrangular base material having a relatively large size using a cutter frame including a plurality of cutters to manufacture the quadrangular unit pieces, the method including (a) an inspection step of scanning a quadrangular base material in a longitudinal direction and in a lateral direction of the quadrangular base material to check positions of defects on the quadrangular base material, (b) a calculation step of calculating a yield when imaginarily cutting the quadrangular base material using two or more kinds of cutting frames, (c) a selection step of selecting one of the cutting frames in which the yield calculated at the calculation step (b) is within a range of upper 30%, and (d) a manufacturing step of cutting the quadrangular base material using the cutting frame selected at the selection step (c) to manufacture quadrangular unit pieces.

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Cheongju-si, South Korea

Eungjin Jang