Patent ID: 8871410
Filing Date: 2014-10-28
Classification: B29D,G02B,G02F,G03F,H04N

Abstract:
1. A method for producing a patterned phase difference film by sequentially processing an elongated transparent film material while transporting the elongated transparent film material, comprising: forming a photo-alignment material film on the transparent film material; forming an alignment film by performing an exposure process on the photo-alignment material film by using a mask through a photo-alignment method; and forming a phase difference layer of a right-eye area applying phase difference corresponding to right-eye transmitting light and a left-eye area applying phase difference corresponding to left-eye transmitting light on the alignment film, wherein the exposure process is performed by irradiation of light through the mask disposed to face a roll while transporting the transparent film material wound around the roll, wherein the mask is formed so that slits which are used for the exposing of the photo-alignment material film a longitudinal direction of which is a direction corresponding to a longitudinal direction of the transparent film material are repetitively formed in a in a direction perpendicular to a longitudinal direction of the slit, and wherein the slit is formed so that one end side or two end sides in the longitudinal direction of the slit has a width being gradually decreased in the direction toward end portions in the longitudinal direction of the slit.