Patent ID: 9151882
Filing Date: 2015-10-06
Classification: B32B,G02B,G02F,Y10T

Abstract:
1. A material roll comprising a roll of a continuous sheet material, comprising: an optical member comprising a polarizer; and a release film provided on one side of the optical member with an adhesive interposed therebetween, and a surface protecting member provided on another side of the optical member; wherein the optical member is constructed of materials that cause the continuous sheet material to curl in the longitudinal direction of the continuous sheet material when no external force is applied in such a way that the release film is facing inward, and the continuous sheet material is for use in a process comprising half cutting and bonding the optical member to a substrate with the adhesive interposed therebetween to form an optical display unit; wherein the half cutting is a process comprising cutting the member of the continuous sheet material while leaving the release film or the surface protecting member uncut or a process comprising bonding a carrier film to the continuous sheet material and cutting the continuous sheet material while leaving the carrier film uncut; wherein the material roll is wound so that the release film is placed facing inward from a center core of the roll and the optical member is placed facing outward from the center core of the roll; wherein a cut sample of the sheet material has a curling amount of 5 mm to 100 mm, when it is placed on a flat surface so that it can curl to become convex downwardly, wherein the sample is obtained by cutting the sheet material in a length of 29.7 cm parallel to the longitudinal direction and in a width of 21.0 cm perpendicular to the longitudinal direction, and the curling amount is the height of an edge of the sample from the flat surface.