Method of cleaning flexible substrate

Abstract

Provided is a method of cleaning a flexible substrate. The method includes the steps of: preparing a flexible substrate and detaching an impurity adhered to both surfaces of the flexible substrate using rotating first rollers disposed on the both surfaces of the flexible substrate; and removing the impurity by transferring the impurity from the first roller to a second roller using the rotating second roller having a relatively higher adhesion than the first roller.

1 . A method of cleaning a flexible substrate comprising the steps of loading a flexible substrate wound on a first rotating drum between the first rotating drum and a second rotating drum, and cleaning the flexible substrate by spraying cleaning liquid onto the flexible substrate while unwinding the flexible substrate. 
   
   
       2 . The method according to  claim 1 , further comprising the step of recovering the cleaning liquid sprayed onto the flexible substrate using air or nitrogen. 
   
   
       3 . The method according to  claim 1 , wherein the cleaning liquid comprises at least one mixture selected from neutral detergent, isopropyl alcohol, methanol, acetone, ethanol, butanol, propanol and water. 
   
   
       4 . The method according to  claim 1 , wherein the flexible substrate comprises an image display device.