Retardation film, method for producing the same, polarizing plate and liquid crystal display
申请人:Inagaki Shinji
公开号:US20070134446A1
公开(公告)日:2007-06-14
A method of producing a long roll retardation film comprising the sequential steps of: (a) casting a film forming material on an endless support to form a long roll film; (b) stretching the long roll film in a lateral direction of the long roll film while both edges of the long roll film are held employing a plurality of clips for each of the edges in a tenter (First Process); (c) reducing distances in the lateral direction between the clips holding the both edges of the long roll film while the edges of the long roll film are held continuously from First Process with the clips (Second Process); (d) enlarging the distances in the lateral direction between the clips holding the both edges of the long roll film while the edges of the long roll film are held continuously from Second Process with the clips (Third Process).
METHOD FOR MANUFACTURING AN OPTICAL FILM HAVING A CONVEXOCONCAVE STRUCTURE, OPTICAL FILM, WIRE GRID POLARIZER AND RETARDATION FILM
申请人:SATO Akira
公开号:US20070252293A1
公开(公告)日:2007-11-01
A manufacturing method of an optical film provided with a convexoconcave structure, comprises the steps of: coating a resin solution including a first resin solved by a solvent onto an endless or roll-like mold provided with a convexoconcave structure, and forming a resin solution layer on the mold; laminating a film substrate onto the resin solution layer to make a laminated film before the solvent in the resin solution layer is completely dried, the film substrate including a second resin, which is capable of absorving the solution or is soluble by the solvent; and peeling the laminated film from the mold before the solvent in the laminated film is completely dried.
Optical Film, Method of Producing the Same and Image Displaying Apparatus Employing the Optical Film
申请人:Yajima Takatoshi
公开号:US20090286098A1
公开(公告)日:2009-11-19
A method for producing an optical film, characterized by extruding a melt containing a cellulose ester resin from a casting die to thereby form a long length cellulose ester film at a draw ratio of 5 to 30, slitting both sides of the long length cellulose ester film and winding the same in roll form, and while unrolling the long length cellulose ester film from the roll, carrying out continuous coating of the surface hereof with an optical function layer.