Display device

Abstract

A display device includes: a substrate; an insulating layer arranged above the substrate; a through portion configured to pass through the substrate and the insulating layer; a pixel array located above the insulating layer and including pixels each including a light-emitting element including, a pixel electrode, an opposite electrode facing the pixel electrode, and an emission layer arranged between the pixel electrode and the opposite electrode, the pixels at least partially surrounding the through portion; and a pattern portion arranged between the through portion and the pixel array, wherein the pattern portion includes: a recess that is concave along a thickness direction of the insulating layer; and a cladding layer arranged above the insulating layer, configured to cover the recess, and including a material different from the insulating layer.

What is claimed is: 
     
       1. A display device comprising:
 a substrate; 
 an insulating layer arranged above the substrate; 
 a through portion configured to pass through the substrate and the insulating layer; 
 a pixel array located above the insulating layer and comprising pixels each comprising a light-emitting element comprising a pixel electrode, an opposite electrode facing the pixel electrode, and an emission layer arranged between the pixel electrode and the opposite electrode, the pixels at least partially surrounding fine through portion; and 
 a pattern portion arranged between the through portion and the pixel array, 
 wherein the pattern portion comprises: 
 a recess that is concave along a thickness direction of tile insulating layer; and 
 a cladding layer arranged above the insulating layer, configured to cover the :recess, and comprising a material different from the insulating layer. 
 
     
     
       2. The display device of  claim 1 , wherein the substrate comprises a display area its which the pixel array is located and a non-display area adjacent to the display area, and
 the non-display area comprises a first sub-non-display area at least partially surrounding an outer edge of the display area and a second sub-non-display area at least partially surrounding an outer edge of the through portion between the through portion and the display area. 
 
     
     
       3. The display device of  claim 2 , wherein the pattern portion is arranged in the second sub-non-display area. 
     
     
       4. The display device of  claim 1 , wherein the insulating layer comprises an inorganic layer. 
     
     
       5. The display device of  claim 4 , further comprising a pixel circuit comprising a thin film transistor and a storage capacitor, and wherein the insulating layer comprises a plurality of inorganic insulating layers, and at least one of the plurality of inorganic insulating layers is arranged between electrodes of the thin film transistor or between electrodes of the storage capacitor to insulate the electrodes. 
     
     
       6. one display device of  claim 1 , wherein the recess has a depth less than or corresponding to a thickness of the insulating layer. 
     
     
       7. The display device of  claim 1 , wherein the cladding layer comprises an organic material. 
     
     
       8. The display device of  claim 1 , wherein the light-emitting element further comprises at least one of a first functional layer arranged between the pixel electrode and the emission layer and a second functional layer arranged between the emission layer and the opposite electrode,
 the cladding layer comprises at least one of a first material layer and a second material layer, 
 the first material layer comprises an insulating material, and 
 the second material layer comprises a same material as at least one of the at least one functional layer and the emission layer. 
 
     
     
       9. The display device of  claim 8 , wherein the cladding layer comprises the first material layer, and
 a portion of the first material layer is located inside the recess. 
 
     
     
       10. The display device of  claim 8 , wherein the cladding layer comprises the second material layer, and
 a portion of the second material layer is located inside the recess. 
 
     
     
       11. The display device of  claim 10 , farther comprising:
 a metallic pattern located below the recess, an upper surface of the metallic pattern corresponding to a bottom surface of the recess. 
 
     
     
       12. The display device of  claim 8 , wherein the cladding layer comprises a stacked body comprising the first material layer and the second material layer arranged above the first material layer. 
     
     
       13. The display device of  claim 1 , wherein the through portion comprises a single closed curve. 
     
     
       14. The display device of  claim 13 , wherein the recess has a ring shape surrounding the through portion and having a diameter greater than a diameter of the through portion. 
     
     
       15. The display device of  claim 1 , wherein the through portion extends up to at least one edge of the display device. 
     
     
       16. The display device of  claim 1 , further comprising:
 a layer arranged above the cladding layer and comprising a same material as that of the opposite electrode. 
 
     
     
       17. The display device of  claim 1 , further comprising:
 an encapsulation layer configured to cover the pixel array. 
 
     
     
       18. The display device of  claim 17 , wherein the encapsulation layer comprises an inorganic encapsulation layer and an organic encapsulation layer. 
     
     
       19. The display device of  claim 18 , further comprising:
 a dam arranged between the pattern portion and the pixel array, 
 an end of the organic encapsulation layer being located between the dam and the pixel array. 
 
     
     
       20. The display device of  claim 18 , wherein the inorganic encapsulation layer extends toward the through portion and covers the pattern portion. 
     
     
       21. The display device of  claim 20 , wherein the inorganic encapsulation layer directly contacts the insulating layer in a region between the through portion and the pattern portion. 
     
     
       22. The display device of  claim 1 , wherein the insulating layer comprises an auxiliary recess corresponding to a region between the through portion and the pattern portion. 
     
     
       23. The display device of  claim 1 , further comprising:
 a step portion having an undercut shape and arranged between the through portion and the pixel array. 
 
     
     
       24. The display device of  claim 23 , wherein the opposite electrode extends toward the through portion and is disconnected by the step portion. 
     
     
       25. A display device comprising:
 a substrate having a through portion defined in a display area of the substrate, the through portion configured to pass through the substrate; and   a light-emitting element in the display area of the substrate, the light-emitting element comprising a pixel electrode, an opposite electrode facing the pixel electrode, and an emission layer arranged between the pixel electrode and the opposite electrode,   wherein the opposite electrode is disconnected by a step portion, the step portion being between the through portion and the light-emitting element.    
     
     
       26. The display device of claim 25, further comprising:
 below the opposite electrode, at least one of a first functional layer and a second functional layer.    
     
     
       27. The display device of claim 26, wherein the first functional layer includes at least one of a hole injection layer (HIL) and a hole transparent layer (HTL), and
 the second functional layer includes at least one of an electron transport layer (ETL) and an electron injection layer (EIL).    
     
     
       28. The display device of claim 25, wherein the step portion has an undercut shape.  
     
     
       29. The display device of claim 28, further comprising:
 an insulating layer, wherein the undercut shape is defined in the insulating layer.    
     
     
       30. The display device of claim 29, further comprising:
 a plurality of grooves between the through portion and the light-emitting element, and   wherein the step portion is between neighboring grooves of the plurality of grooves.    
     
     
       31. The display device of claim 30, further comprising: a cladding layer covering at least some of the plurality of the grooves.  
     
     
       32. The display device of claim 31, wherein the cladding layer comprises an organic material.  
     
     
       33. The display device of claim 32, wherein an upper surface of the cladding layer is flat.  
     
     
       34. The display device of claim 25, wherein the step portion has a lower width and an upper width greater than the lower width.  
     
     
       35. The display device of claim 25, further comprising:
 a neighboring light-emitting element adjacent to the light-emitting element, wherein the light-emitting element and the neighboring light-emitting element are arranged in the display area, and   wherein the opposite electrode is continuously formed in the display area.    
     
     
       36. A display device comprising:
 a substrate having a through portion defined in a display area of the substrate, the through portion configured to pass through the substrate; and   a pixel array in the display area of the substrate, the pixel array comprising a plurality of pixels each comprising a light-emitting element, the light-emitting element comprising a pixel electrode, an opposite electrode facing the pixel electrode, and an emission layer arranged between the pixel electrode and the opposite electrode, the plurality of pixels adjacent to the through portion;   an encapsulation layer over the pixel array; and   a first groove between the through portion and the pixel array, wherein the first groove has a first side surface having an undercut shape.    
     
     
       37. The display device of claim 36, further comprising an insulating layer over the substrate and below at least a portion of the pixel electrode, wherein the first groove is defined in the insulating layer.  
     
     
       38. The display device of claim 37, wherein the insulating layer comprises a plurality of sub-insulating layers.  
     
     
       39. The display device of claim 37, further comprising a second groove adjacent to the first groove, wherein the second groove has a second side surface having an undercut shape, and
 wherein a step portion between the first groove and the second groove has a lower width and an upper width greater than the lower width.    
     
     
       40. The display device of claim 39, further comprising:
 a third groove being closer to the through portion than the first and second grooves; and   a cladding layer covering the third groove.    
     
     
       41. The display device of claim 40, wherein the cladding layer comprises an organic material.  
     
     
       42. The display device of claim 36, wherein the opposite electrode is disconnected by the undercut shape.  
     
     
       43. The display device of claim 42, wherein the opposite electrode is continuously formed in the display area.  
     
     
       44. The display device of claim 36, wherein the encapsulation layer comprises an inorganic encapsulation layer and an organic encapsulation layer, wherein the inorganic encapsulation layer extends toward the through portion to cover the first groove.