Organic light-emitting display device and manufacturing method of the same

Abstract

An organic light-emitting display device and a related manufacturing method of the organic light-emitting display device are disclosed. In one aspect, the organic light-emitting display device includes a plurality of pixels which are formed between a plurality of scan lines and a plurality of data signal lines. It also includes a plurality of initialization voltage lines which are formed in parallel with the plurality of scan lines and are shared between two adjacent pixels of a row to supply an initialization voltage to the two adjacent pixels. It also includes a driving voltage line which supplies a driving voltage to the plurality of pixels and includes a first voltage line formed in a vertical direction and a second voltage line that is connected between the two adjacent pixels and formed in a horizontal direction.

What is claimed is: 
     
       1. An organic light-emitting display device comprising:
 a first pixel having a first active layer and a second pixel having a second active layer, the first pixel and the second pixel formed as two adjacent pixels in a row of pixels; 
 a connection area between the first pixel and the second pixel, the connection area including direct, physical contact between the first active layer and the second active layer; 
 at least one insulating layer formed on the first active layer and the second active layer; 
 a contact hole which is formed in the insulating layer and exposes the connection area; 
 a driving voltage line which is formed on the insulating layer; 
 a contact metal which is formed on the insulating layer and contacts the connection area through the contact hole; 
 a protective layer which is formed on the driving voltage line and the contact metal; 
 a via hole which is formed in the protective layer and exposes part of the contact metal; and 
 an initialization voltage line which is connected to the contact metal to electrically connect to the first active layer and the second active layer through the via hole. 
 
     
     
       2. The organic light-emitting display device of  claim 1 , wherein the driving voltage line for the two adjacent pixels comprises two first voltage lines formed in a vertical direction and a second voltage line that is connected to the two first voltage lines in a horizontal direction. 
     
     
       3. The organic light-emitting display device of  claim 2 , wherein the two first voltage lines are spaced a distance apart from each other so as to parallel each other. 
     
     
       4. The organic light-emitting display device of  claim 1 , wherein the driving voltage line is formed on a layer on which a plurality of data signal lines are formed. 
     
     
       5. The organic light-emitting display device of  claim 2 , wherein the initialization voltage line is disposed to be parallel with the second voltage line. 
     
     
       6. The organic light-emitting display device of  claim 1 , wherein the initialization voltage line is formed on a layer on which pixel electrodes are formed. 
     
     
       7. The organic light-emitting display device of  claim 1 , wherein the first active layer and the second active layer are symmetrical based on the connection area. 
     
     
       8. The organic light-emitting display device of  claim 2 , wherein parts of the first and second active layers are formed to be orthogonal to the second voltage line and overlap with the second voltage line. 
     
     
       9. A method of manufacturing an organic light-emitting display device, the method comprising:
 forming a first active layer for a first pixel and a second active layer for a second pixel, the first and second pixels formed as two adjacent pixels in a row of pixels on a substrate, the first and second active layers having a connection area between the first and second pixels, the connection area including direct, physical contact between the first active layer and the second active law layer; 
 forming at least one insulating layer on the first and second active layers; 
 forming a contact hole in the insulating layer to expose a part of the connection area; 
 forming a contact metal and a driving voltage line on the insulating layer, wherein the contact metal contacts the connection area through the contact hole; 
 forming a protective layer on the driving voltage line and the contact metal; 
 forming a via hole in the protective layer to expose part of the contact metal; and 
 forming an initialization voltage line that is connected to the contact metal to electrically connect to the first and second active layers through the via hole. 
 
     
     
       10. The method of  claim 9 , wherein the driving voltage line for the first and second pixels comprises two first voltage lines formed in a vertical direction and a second voltage line that is connected to the two first voltage lines in a horizontal direction. 
     
     
       11. The method of  claim 10 , wherein the initialization voltage line is formed to be parallel with the second voltage line. 
     
     
       12. The method of  claim 10 , wherein the first and second active layers are symmetrical based on the connection area, and parts of the first and second active layers are disposed to be orthogonal to the second voltage line and overlap with the second voltage line. 
     
     
       13. An organic light emitting diode display comprising:
 a scan line extended to a first direction;   a first data line extended to a second direction different from the first direction;   a first driving voltage line extended to the second direction;   an initialization voltage line extended to the first direction;   a first thin film transistor comprising a first gate electrode and a first active layer being curved under the first gate electrode, and coupled to the first driving voltage line;   a second thin film transistor coupled to the first data line and the scan line;   a third thin film transistor coupled to the initialization voltage line and the first thin film transistor;   a first organic light emitting diode coupled to the first thin film transistor;   a first insulating layer covering the first thin film transistor; and   a first storage capacitor electrically coupled to the first gate electrode of the first thin film transistor,   wherein the first storage capacitor comprises a first capacitor electrode including a portion of the first gate electrode of the first thin film transistor, and a second capacitor electrode overlapping the first capacitor electrode, and   wherein a portion of the first insulating layer is between the first capacitor electrode and the second capacitor electrode, and   wherein one end of the first active layer is extended to the second thin film transistor, and the other end of the first active layer is extended to the third thin film transistor.    
     
     
       14. The organic light emitting diode display of claim 13, further comprising: a fourth thin film transistor coupled to the first driving voltage line and the first thin film transistor.  
     
     
       15. The organic light emitting diode display of claim 14, wherein the first active layer is extended to and coupled to the fourth thin film transistor.  
     
     
       16. The organic light emitting diode display of claim 14, further comprising:
 a second insulating layer over the second capacitor electrode.    
     
     
       17. The organic light emitting diode display of claim 16, further comprising:
 a first pixel electrode on the second insulating layer, and coupled to the first organic light emitting diode and the first thin film transistor.    
     
     
       18. The organic light emitting diode display of claim 16,
 wherein the initialization voltage line is on the second insulating layer.    
     
     
       19. The organic light emitting diode display of claim 18,
 wherein the first active layer is extended to and coupled to the fourth thin film transistor.    
     
     
       20. The organic light emitting diode display of claim 19, further comprising; a contact metal coupled to the initialization voltage line and the third thin film transistor.  
     
     
       21. The organic light emitting diode display of claim 13, further comprising;
 a second data line extended to the second direction;   a second driving voltage line extended to the second direction;   a fifth thin film transistor comprising a second gate electrode and a second active layer being curved under the second gate electrode, and coupled to the second driving voltage line;   a sixth thin film transistor coupled to the second data line and the scan line;   a seventh thin film transistor coupled to the initialization voltage and the third thin film transistor;   a second organic light emitting diode coupled to the fifth thin film transistor; and   a second storage capacitor electrically coupled to the second gate electrode of the fifth thin film transistor,   wherein the second storage capacitor comprises a third capacitor electrode including a portion of the second gate electrode of the fifth thin film transistor, and a fourth capacitor electrode overlapping the third capacitor electrode,   wherein a portion of the first insulating layer between the third storage capacitor electrode and the fourth storage capacitor electrode,   wherein one end of the second active layer is extended to the sixth thin film transistor, and the other end of the second active layer is extended to the seventh thin film transistor, and   wherein the second active layer is symmetric to the first active layer.    
     
     
       22. The organic light emitting diode display of claim 21, further comprising; a eighth thin film transistor coupled to the second driving voltage line and the fifth thin film transistor.  
     
     
       23. The organic light emitting diode display of claim 22, wherein the second active layer is extended to and coupled to the eighth thin film transistor.  
     
     
       24. The organic light emitting diode display of claim 21, further comprising:
 a second insulating layer over the first storage capacitor and the second storage capacitor.    
     
     
       25. The organic light emitting diode display of claim 24, comprising;
 a second pixel electrode on the second insulating layer, and coupled to the second organic light emitting diode and the fifth thin film transistor.    
     
     
       26. The organic light emitting diode display of claim 25,
 wherein the initialization voltage line is on the second insulating layer.    
     
     
       27. The organic light emitting diode display of claim 26,
 Wherein the first active layer is extended to and electrically coupled to the second active layer.    
     
     
       28. An organic light emitting diode display comprising:
 substrate;   a plurality of scanning lines on the substrate;   a plurality of data lines;   a first thin film transistor coupled to a first scan line of the scan lines and a first data line of the data lines;   a plurality of driving voltage lines;   a second thin film transistor comprising a first gate electrode and a first active layer and electrically coupled to a first driving voltage line of the driving voltage lines;   a plurality of initialization voltage lines;   a third thin film transistor comprising a second gate electrode and coupled to a first initialization voltage line of the initialization voltage lines and the second thin film transistor;   a first organic light emitting diode electrically coupled to the second thin film transistor;   a first insulating layer covering the second thin film transistor; and   a first storage capacitor coupled to the first gate electrode and comprising a first capacitor electrode and a second capacitor electrode over the first capacitor electrode, wherein the first capacitor electrode includes a portion of the first gate electrode of the second thin film transistor, and a portion of the first insulating layer is between the first capacitor electrode and the second capacitor electrode,   wherein the first active layer is coupled to an active layer of the third thin film transistor, and   wherein the first active layer under the first gate electrode is curved.    
     
     
       29. The organic light emitting diode display of claim 28, further comprising a fourth thin film transistor comprises a third gate electrode and is electrically coupled to the first driving voltage line and the second thin film transistor.  
     
     
       30. The organic light emitting diode display of claim 29, wherein the first active layer is coupled to an active layer of the fourth thin film transistor.  
     
     
       31. The organic light emitting diode display of claim 29, further comprising a second insulating layer over the first capacitor electrode.  
     
     
       32. The organic light emitting diode display of claim 31, wherein the first organic light emitting diode comprises a first pixel electrode that is formed on the second insulating layer.  
     
     
       33. The organic light emitting diode display of claim 32, wherein the initialization voltage lines are formed on the second insulating layer.  
     
     
       34. The organic light emitting diode display of claim 33, wherein the first active layer is coupled to an active layer of the fourth thin film transistor.  
     
     
       35. The organic light emitting diode display of claim 34, further comprising a contact metal coupled to the first initialization voltage line and the third thin film transistor.  
     
     
       36. The organic light emitting diode display of claim 28, further comprising;
 a fourth thin film transistor coupled to the first scan line and a second data line of the data lines;   a fifth thin film transistor comprising a third gate electrode and a second active layer, and electrically coupled to a second driving voltage line of the driving voltage lines;   a sixth thin film transistor comprising a fourth gate electrode and coupled to the first initialization voltage line and the fifth thin film transistor;   a second organic light emitting diode electrically coupled to the fifth thin film transistor; and   a second storage capacitor electrically coupled to the third gate electrode and comprising a third capacitor electrode and a fourth capacitor electrode over the third capacitor electrode, wherein the third capacitor electrode includes a portion of the third gate electrode of the fifth thin film transistor, and a portion of the first insulating layer is between the third storage capacitor electrode and the fourth storage capacitor electrode,   wherein the second active layer is coupled an active layer of the sixth transistor,   wherein the second active layer curved under the third gate electrode, and   wherein the second active layer is symmetric to the first active layer.    
     
     
       37. The organic light emitting diode display of claim 36, further comprising a seventh thin film transistor comprises a fifth gate electrode and is electrically coupled to the second driving voltage line and the fifth thin film transistor.  
     
     
       38. The organic light emitting diode display of claim 37, wherein the second active layer is coupled to an active layer of the seventh thin film transistor.  
     
     
       39. The organic light emitting diode display of claim 36, further comprising;
 a second insulating layer over the first storage capacitor and the second storage capacitor.    
     
     
       40. The organic light emitting diode display of claim 39, wherein the second organic light emitting diode comprises a second pixel electrode that is formed on the second insulating layer.  
     
     
       41. The organic light emitting diode display of claim 40, wherein the first initialization voltage line formed on the second insulating layer.  
     
     
       42. The organic light emitting diode display of claim 41, wherein the first active layer is coupled to the second active layer.