Printing apparatus and fabricating method thereof

Abstract

A printing apparatus adapted for printing wide line width and narrow line width patterns with one printing plate when fabricating a liquid crystal display device is disclosed. The printing apparatus includes a printing roll having target pattern forming material spread thereon, a printing substrate have at least one pair of adjacent printing plate patterns and at least one barrier rib pattern therebetween, and a target substrate. The printing substrate is configured to receive target pattern forming material from the printing roll and the target substrate is configured to receive target pattern forming material remaining on the printing roll following transfer of target forming material to the printing substrate.

1 . A method of using a printing apparatus to fabricate a target substrate, comprising:
 providing a printing substrate comprising:   at least one pair of adjacent printing plate patterns on the printing plate, the at least one pair of adjacent printing plate patterns defining a first gap having a first gap length; and   at least one barrier rib pattern between the at least one pair of adjacent printing plate patterns, the barrier rib pattern and a printing plate pattern adjacent thereto defining a second gap having a second gap length   providing a printing roll comprising target pattern forming material spread thereon;   printing target pattern forming material on the printing plate and barrier rib patterns on the printing substrate to form a target pattern on the printing roll;   providing a target substrate; and   printing the target pattern from the printing roll onto the target substrate.   
   
   
       2 . The method of  claim 1 , wherein the printing plate patterns and the at least one barrier rib pattern are formed by wet etching. 
   
   
       3 . The method of  claim 1 , comprising disposing the at least one pair of adjacent printing plate patterns at least about 100 μm apart from one another. 
   
   
       4 . The method of  claim 1 , comprising disposing a plurality of barrier rib patterns between the at least one pair of adjacent printing plate patterns. 
   
   
       5 . The method of  claim 1 , comprising forming a printing plate pattern or barrier rib pattern to have a height between about 10% to 45% of the second gap length. 
   
   
       6 . The method of  claim 1 , comprising disposing a plurality of barrier rib patterns between the at least one pair of adjacent printing plate patterns. 
   
   
       7 . The method of  claim 1 , comprising disposing a barrier rib pattern and a printing plate pattern adjacent thereto at a distance of about eightfold to tenfold the height of the printing plate pattern or the barrier rib pattern. 
   
   
       8 . The method of  claim 1 , comprising forming the barrier rib pattern to have a line width of about 5% to 10% of the second gap length. 
   
   
       9 . The method of  claim 1 , wherein a first pair of adjacent printing plate patterns is disposed on the printing substrate at least 100 μm apart from one another and a second pair of adjacent printing plate patterns is disposed on the printing substrate less than 100 μm apart from one another. 
   
   
       10 . The method of  claim 1 , wherein the target pattern forming material on the printing roll is pressed onto the targeting substrate so that a line width of the target pattern is extended compared to the corresponding line width of the target pattern on the printing roll before being pressed onto the target substrate. 
   
   
       11 . The method of  claim 1 , wherein the target pattern forming material comprises a viscous polymeric composition having a paste-like consistency.