Method of manufacturing display device, display device therefrom and manufacturing apparatus therefor

Abstract

A method of manufacturing a display device includes forming a thin film transistor on an insulating substrate, forming an electrode which is electrically connected with the thin film transistor, forming a wall which surrounds the electrode, supplying a first solvent to the electrode that is surrounded by the wall, and supplying ink which comprises an organic material and a second solvent to the electrode which has previously received the first solvent. Thus, the manufacturing method produces a display device which has a uniform organic layer.

1 . A method of manufacturing a display device, comprising: 
 forming a thin film transistor on an insulating substrate;    forming an electrode which is electrically connected with the thin film transistor;    forming a wall which surrounds the electrode;    supplying a first solvent to the electrode which is surrounded by the wall; and    supplying ink which comprises an organic material and a second solvent to the electrode which has received the first solvent.    
     
     
         2 . The method according to  claim 1 , wherein the first solvent is supplied to at least one of a plurality of electrodes around the circumference of the electrode which receives the ink.  
     
     
         3 . The method according to  claim 2 , wherein the first solvent and the second solvent comprise substantially the same material.  
     
     
         4 . The method according to  claim 2 , wherein the first solvent has a lower boiling point than the second solvent.  
     
     
         5 . The method according to  claim 4 , wherein the second solvent comprises a first sub-solvent which has a first boiling point and a second sub-solvent which has a second boiling point higher than the first boiling point, and 
 the first solvent and the first sub-solvent comprise substantially the same material.    
     
     
         6 . The method according to  claim 1 , wherein the ink is supplied along a plurality of sub-jetting regions which are provided in parallel with each other in a first direction and elongated in a second direction which is substantially perpendicular to the first direction.  
     
     
         7 . The method according to  claim 6 , wherein the first solvent is supplied along a sub-jetting region which is adjacent to the sub-jetting region wherein the ink is supplied.  
     
     
         8 . The method according to  claim 6 , wherein the ink is sequentially supplied in the first direction with respect to the plurality of sub-jetting regions, and 
 the sub-jetting region along which the first solvent is supplied is ahead of the sub-jetting region along which the ink is supplied, along the first direction.    
     
     
         9 . The method according to  claim 6 , wherein the first solvent and the ink are supplied along the same sub-jetting region.  
     
     
         10 . The method according to  claim 6 , wherein the plurality of sub-jetting regions comprise a pair of external sub-jetting regions disposed opposite each other along the first direction, and an internal sub-jetting region which is disposed within the pair of external sub-jetting regions, and 
 a greater amount of the first solvent is supplied to the pair of external sub-jetting regions than to the internal sub-jetting regions.    
     
     
         11 . The method according to  claim 6 , wherein the plurality of sub-jetting regions comprise a pair of external sub-jetting regions disposed opposite each other along the first direction, and an internal sub-jetting region which is disposed within the pair of external sub-jetting regions, further comprising: 
 supplying the first solvent to the pair of external sub-jetting regions.    
     
     
         12 . A display device, comprising: 
 a thin film transistor which is formed on an insulating substrate;    an electrode which is electrically connected with the thin film transistor;    a wall which surrounds the electrode; and    an organic layer which is surrounded by the wall and formed by supplying a first solvent and then ink having an organic material and a second solvent, to the electrode.    
     
     
         13 . The display device according to  claim 12 , wherein the first solvent is supplied to at least one of a plurality of electrodes around the circumference of the electrode which receives the ink.  
     
     
         14 . The display device according to  claim 12 , wherein the first solvent and the second solvent comprise substantially the same material.  
     
     
         15 . The display device according to  claim 12 , wherein the first solvent has a lower boiling point than the second solvent.  
     
     
         16 . The display device according to  claim 12 , wherein the second solvent comprises a first sub-solvent having a first boiling point and a second sub-solvent having a second boiling point which is higher than the first boiling point, and 
 the first solvent and the first sub-solvent comprise substantially the same material.    
     
     
         17 . A device for manufacturing a display device, comprising: 
 a stage which comprises a seating region which stably seats a substrate having a plurality of electrodes;    a nozzle head which comprises a first sub-nozzle head and a second sub-nozzle head;    a supplier which supplies a first solvent to the first sub-nozzle head and ink having an organic material and a second solvent to the second sub-nozzle head;    a driver which moves the nozzle head and the stage relative to one another; and    a controller which controls the supplier and the driver to supply the ink to one of the plurality of electrodes which has received the first solvent.    
     
     
         18 . The manufacturing device according to  claim 17 , further comprising: 
 a head main body to which the nozzle head is mounted.    
     
     
         19 . The manufacturing device according to  claim 17 , wherein the driver moves the nozzle head and the stage relative to one another in a first direction and a second direction which is perpendicular to the first direction.  
     
     
         20 . The manufacturing device according to  claim 19 , wherein the first sub-nozzle head and the second sub-nozzle head are provided along the first direction or the second direction.  
     
     
         21 . The manufacturing device according to  claim 19 , wherein the driver comprises a first sub-driver which moves the nozzle head in the first direction, and a second sub-driver which moves the stage in the second direction.