Optical film and fabrication method thereof

Abstract

An optical film and fabrication method thereof are disclosed. The optical film comprises a substrate and an anti-static layer disposed thereon. The anti-static layer comprises a resin layer and a plurality of anti-static particles *wherein the bottom half portion of the anti-static layer contains more than 60 wt % of tile anti-static particles.

1 - 10 . (canceled)  
     
     
         11 . A method of fabricating an optical film, comprising: 
 providing a substrate; 
 coating an anti-static solution on the substrate to form an anti-static wet layer thereon, wherein the anti-static solution comprises a plurality of anti-static particles and a resin material;  
   providing the anti-static particles an external force or an inter-particle force; 
 drying the anti-static wet layer; and  
 curing the anti-static wet layer to form an anti-static layer, comprising the anti-static particles and a resin layer, and having a top half portion and a bottom half portion containing more than 60 wt % of the anti-static particles.  
   
     
     
         12 . The optical film of  claim 11 , wherein the anti-static particles have a primary diameter of 5 to 100 nm.  
     
     
         13 . The optical film of  claim 11 , wherein the anti-static particles have a primary diameter of 10 to 40 nm.  
     
     
         14 . The method of  claim 11 , wherein the anti-static particles have a zeta potential of +70 to −70 eV in the anti-static solution.  
     
     
         15 . The method of  claim 11 , wherein the anti-static particles have a zeta potential of −10 to −50 eV in the anti-static solution.  
     
     
         16 . The method of  claim 11 , wherein the inter-particle force is provided by adding an electrolyte or a polymeric flocculant to the anti-static solution.  
     
     
         17 . The method of  claim 16 , wherein the electrolyte has a concentration of 10 −6  to 10 −1  M in the anti-static solution.  
     
     
         18 . The method of  claim 11 , wherein the external force is provided by applying an electric field or a magnetic field to the anti-static particles in the anti-static wet layer.