Organic light emitting display device and manufacturing method thereof

Abstract

An organic light emitting diode display may include a substrate, a pixel defining layer on the substrate, being configured to define a pixel area, a pixel electrode on the pixel area, a light emitting layer on the pixel electrode, a common electrode on the light emitting layer, and an auxiliary wire spaced apart from the pixel electrode and disposed on the same layer as the pixel electrode. The pixel defining layer may include a pixel defining part configured to define a pixel area and a spacer protruding from the pixel defining part. The auxiliary wire may not overlap the spacer.

What is claimed is: 
     
       1. An organic light emitting diode display, comprising:
 a substrate; 
 a plurality of pixel electrodes on the substrate;  
 a pixel defining layer on the substrate, the pixel defining layer defining pixel areas; 
 a pixel electrode on each pixel area; 
 a light emitting layer on the a pixel electrode from among the plurality of pixel electrodes; 
 a common electrode on the light emitting layer; and 
 an auxiliary wire spaced apart from the pixel electrode and on a same layer as the pixel electrode, 
 wherein:
 the pixel defining layer includes a pixel defining part defining the pixel areas and a plurality of spacers protruding from the pixel defining part, 
 the auxiliary wire does not overlap the spacer plurality of spacers, and 
 the plurality of spacers are discontinuously arranged in a region between the pixel areas on the pixel defining part between some of the plurality of pixel electrodes in a plan view, and 
 the auxiliary wire extends between some adjacent pixel electrodes from among the plurality of pixel electrodes. 
 
 
     
     
       2. The organic light emitting diode display as claimed in  claim 1 , wherein the auxiliary wire is an initialization voltage wire. 
     
     
       3. The organic light emitting diode display as claimed in  claim 1 , wherein the pixel electrode and the auxiliary wire are made of a same material. 
     
     
       4. The organic light emitting diode display as claimed in  claim 3 , wherein the auxiliary wire comprises at least one metal layer and at least one transparent conductive oxide layer. 
     
     
       5. The organic light emitting diode display as claimed in  claim 3 , wherein the auxiliary wire comprises a metal layer on the substrate and a transparent conductive oxide layer on the metal layer. 
     
     
       6. The organic light emitting diode display as claimed in  claim 1 , further comprising a sealing member facing the substrate,
 wherein: 
 the pixel defining layer is between the sealing member and the substrate, and 
 the spacer plurality of spacers of the pixel defining layer maintains a space between the substrate and the sealing member. 
 
     
     
       7. The organic light emitting diode display as claimed in  claim 1 , wherein the pixel defining part and the spacer plurality of spacers are made of a same material. 
     
     
       8. The organic light emitting diode display as claimed in  claim 1 , wherein the spacer has plurality of spacers have any one of the following shapes: a truncated pyramid, a prism, a truncated cone, a cylinder, a hemisphere, and a hemispheroid. 
     
     
       9. The organic light emitting diode display as claimed in  claim 1 , wherein the auxiliary wire overlaps the pixel defining part. 
     
     
       10. A method of manufacturing an organic light emitting diode display, the method comprising:
 forming a plurality of pixel electrode electrodes and an auxiliary wire on a substrate; 
 forming a photosensitive material layer on the plurality of pixel electrode electrodes and the auxiliary wire; 
 forming a pixel defining layer including pixel areas a pixel area that expose exposes a part of the a pixel electrode from among the plurality of pixel electrodes by patterning the photosensitive material layer; 
 forming a light emitting layer on the pixel electrode; and 
 forming a common electrode on the light emitting layer, 
 wherein:
 the pixel defining layer includes a pixel defining part defining the pixel areas and a plurality of spacers protruding from the pixel defining part, 
 the auxiliary wire does not overlap the spacer plurality of spacers, and 
 the plurality of spacers are discontinuously arranged in a region between the pixel areas, and 
 at least a portion of the auxiliary wire is disposed between some adjacent pixel electrodes from among the plurality of pixel electrodes. 
 
 
     
     
       11. The method as claimed in  claim 10 , wherein forming the pixel defining layer includes using a mask including a light shielding pattern. 
     
     
       12. The method as claimed in  claim 10 , wherein forming the pixel defining layer includes performing a halftone exposure. 
     
     
       13. The method as claimed in  claim 10 . further comprising arranging a sealing member to face the substrate, wherein:
 the pixel defining layer is formed between the sealing member and the substrate, and 
 the spacer plurality of spacers of the pixel defining layer maintains a space between the substrate and the sealing member. 
 
     
     
       14. The method as claimed in  claim 10 , wherein the spacer has plurality of spacers have any one of the following shapes: a truncated pyramid, a prism, a truncated cone, a cylinder, a hemisphere, and a hemispheroid. 
     
     
       15. The method as claimed in  claim 10 , wherein the forming of the pixel electrode and the auxiliary wire comprises:
 forming a conductive material layer comprising at least one metal layer and at least one transparent conductive oxide layer on the substrate; and 
 patterning the conductive material layer. 
 
     
     
       16. The method as claimed in  claim 10 , wherein the auxiliary wire overlaps the pixel defining part. 
     
     
       17. The organic light emitting diode display as claimed in  claim 6 , wherein the common electrode is between the spacer plurality of spacers and the sealing member. 
     
     
       18. The organic light emitting diode display as claimed in  claim 1 , wherein the common electrode is on the spacer plurality of spacers. 
     
     
       19. The method as claimed in  claim 10 , wherein the common electrode is formed on the spacer plurality of spacers. 
     
     
       20. The organic light emitting diode display as claimed in claim 1, wherein the plurality of spacers are made of a same material as the pixel defining layer. 
     
     
       21. The organic light emitting diode display as claimed in claim 1,
 wherein the auxiliary wire comprises a first portion, a second portion and a third portion connected to the first portion and the second portion, and   wherein the first portion and the second portion extend in a first direction, and the third portion extends in a second direction different from the first direction.   
     
     
       22. The organic light emitting diode display as claimed in claim 21,
 wherein the pixel electrodes comprise a first pixel electrode and a second pixel electrode having a different size from the first pixel electrode, and   wherein the third portion extends between the first pixel electrode and the second pixel electrode.   
     
     
       23. The organic light emitting diode display as claimed in claim 22, wherein at least one of the first pixel electrode or the second pixel electrode has substantially a diamond shape in a plan view. 
     
     
       24. The organic light emitting diode display as claimed in claim 1, wherein the spacers are disposed between adjacent pixel electrodes having different sizes from each other. 
     
     
       25. The organic light emitting diode display as claimed in claim 1, further comprising other auxiliary wire disposed adjacent to the auxiliary wire, wherein pixel electrodes having different sizes from each other from among the plurality of pixel electrodes are disposed between the auxiliary wire and the other auxiliary wire. 
     
     
       26. An organic light emitting diode display, comprising:
 a substrate;   a plurality of thin film transistors on the substrate;   an insulating layer on the thin film transistors;   a plurality of pixel electrodes on the insulating layer;   an auxiliary wire spaced apart from the pixel electrodes on the insulating layer;   a pixel defining layer on the pixel electrodes, the pixel defining layer defining pixel areas;   a plurality of spacers discontinuously arranged in a region between the pixel areas;   light emitting layers on the pixel electrodes; and   a common electrode on the light emitting layers,   wherein the auxiliary wire is serpentine and extends between the pixel electrodes, and   wherein the plurality of pixel electrodes is comprised of at least two kinds of pixel electrodes in size.   
     
     
       27. The organic light emitting diode display as claimed in claim 26, wherein the auxiliary wire is an initialization voltage wire. 
     
     
       28. The organic light emitting diode display as claimed in claim 26, wherein the auxiliary wire is disposed on a same layer as the pixel electrodes. 
     
     
       29. The organic light emitting diode display as claimed in claim 28, wherein the auxiliary wire comprises at least one metal layer and at least one transparent conductive oxide layer. 
     
     
       30. The organic light emitting diode display as claimed in claim 28, wherein the auxiliary wire comprises a metal layer on the substrate and a transparent conductive oxide layer on the metal layer. 
     
     
       31. The organic light emitting diode display as claimed in claim 28, wherein the auxiliary wire is an initialization voltage wire. 
     
     
       32. The organic light emitting diode display as claimed in claim 31, wherein the auxiliary wire is made of a same material as the pixel electrodes. 
     
     
       33. The organic light emitting diode display as claimed in claim 32, wherein the auxiliary wire comprises at least one metal layer and at least one transparent conductive oxide layer. 
     
     
       34. The organic light emitting diode display as claimed in claim 33, wherein the auxiliary wire comprises a metal layer on the substrate and a transparent conductive oxide layer on the metal layer. 
     
     
       35. The organic light emitting diode display as claimed in claim 34, wherein the auxiliary wire does not overlap the spacers. 
     
     
       36. The organic light emitting diode display as claimed in claim 26, further comprising a sealing member facing the substrate,
 wherein:   the pixel defining layer is between the sealing member and the substrate, and   the spacers maintain a space between the substrate and the sealing member.   
     
     
       37. The organic light emitting diode display as claimed in claim 26, wherein the spacers are made of a same material as the pixel defining layer. 
     
     
       38. The organic light emitting diode display as claimed in claim 26, wherein the spacers have any one of the following shapes: a truncated pyramid, a prism, a truncated cone, a cylinder, a hemisphere, and a hemispheroid. 
     
     
       39. The organic light emitting diode display as claimed in claim 26, wherein the auxiliary wire has a zigzag pattern. 
     
     
       40. The organic light emitting diode display as claimed in claim 26, wherein the auxiliary wire is between the substrate and the pixel defining layer. 
     
     
       41. The organic light emitting diode display as claimed in claim 26, wherein the auxiliary wire is disposed between the substrate and the pixel defining layer in a vertical direction. 
     
     
       42. The organic light emitting diode display as claimed in claim 26, wherein the common electrode is disposed on the pixel defining layer and the spacers. 
     
     
       43. The organic light emitting diode display as claimed in claim 26, wherein the two kinds of pixel electrodes have different shapes from each other. 
     
     
       44. The organic light emitting diode display as claimed in claim 26, wherein the spacers protrude from the pixel defining layer. 
     
     
       45. The organic light emitting diode display as claimed in claim 26, wherein the auxiliary wire is spaced apart from the common electrode.