Patent ID: 9604308
Date: 2017-03-28
CPC Classifications: B26F,G02B,Y10T

Claim:
1. 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 comprising a cutter, the method comprising: preparing a base material sheet having a large length to width ratio, the base material sheet exhibiting one optical directivity in a longitudinal direction or in a lateral direction; preparing a cutting frame comprising at least one 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, wherein the cutting frame comprises two or more first cutters sequentially arranged while being adjacent to each other in the longitudinal direction of the base material sheet and two or more second cutters sequentially arranged while being adjacent to each other in the longitudinal direction of the base material sheet, sides of the first cutters adjacent to each other are coincided and sides of the second cutters adjacent to each other are coincided, the first cutters and the second cutters have the same array length, and the first unit piece and the second unit piece have the same length and width when the first unit piece and the second unit piece are arranged such that the optical directivities of the first unit piece and the second unit piece are perpendicular to each other.