Patent ID: 8734607

Claim:
A method of producing an optical film laminate having three or more optical films laminated together, each of the optical films having an optical orientation axis, the method comprising: a first film layer forming step of cutting a first optical film having an elongated shape into first optical film pieces along cutting lines crossing the longitudinal direction of the first optical film and disposing the first optical film pieces adjacent to each other in a substantially band or strip shape directly on a first elongated adhesive film, thereby forming a first film layer having an optical orientation axis crossing the longitudinal direction of the band or strip-shaped first optical film pieces, wherein the first elongated adhesive film comprises a first releasing layer and a first adhesive layer laminated on the first releasing layer, and wherein the first optical film pieces are laminated directly on the first adhesive layer side of the first elongated adhesive film; and a second film layer forming step of cutting a second optical film having an elongated shape into second optical film pieces along cutting lines crossing the longitudinal direction of the second optical film and disposing the second optical film pieces adjacent to each other in a substantially band or strip shape directly on a second elongated adhesive film, thereby forming a second film layer having an optical orientation axis crossing the longitudinal direction of the band or strip-shaped second optical film pieces, wherein the second elongated adhesive film comprises a second releasing layer and a second adhesive layer laminated on the second releasing layer, and wherein the second optical film pieces are laminated directly on the second adhesive layer side of the second elongated adhesive film and a lamination step of laminating a third film layer made of a third optical film, the first film layer and the second film layer together via the first adhesive layer which has been exposed to the outside by removing the first releasing layer and the second adhesive layer which has been exposed to the outside by removing the second releasing layer; and a cutting step of cutting the first, second and third film layers held in a laminated state into plural optical film laminates.