OPTICAL FILM WITH ADHESIVE ON BOTH SIDES AND METHOD FOR FABRICATION OF IMAGE DISPLAY DEVICE EMPLOYING SAME AND METHOD OF SUPPRESSING CURLING OF OPTICAL FILM WITH ADHESIVE ON BOTH SIDES

摘要

INDUSTRIAL APPLICABILITY The present invention has a printing step absorbing property when bonded to a front transparent plate, a touch panel, or the like, and it is difficult to cause the sticking of the pressure-sensitive adhesive from the end face to occur, and the curled film due to moisture absorption is suppressed. To provide. The optical film 50 with an adhesive is the 2nd adhesive of 50 micrometers or more in thickness which were formed in the 1st adhesive layer 21 of 3 micrometers-30 micrometers in thickness formed in one surface of the optical film 10 containing a polarizing plate, and the other surface. The layer 22 is provided, and the 1st protective sheet 31 and the 2nd protective sheet 32 are adhere | attached so that peeling of each of the 1st adhesive layer 21 and the 2nd adhesive layer 22 is possible. Residual stress of the second pressure sensitive adhesive layer 22 is S ₂ (N / cm 2); The thickness of the first protective sheet 31 is Y (µm); S ₂ , Y and Z satisfy the following relationship when the thickness of the second protective sheet 32 is Z (μm): 20 ≦ Y ≦ 80; 45 ≦ Z; And Y + 0.17Z + 10.6S ₂ ≧ 63.