Display device

Abstract

According to one embodiment, a display device Includes a substrate, a pixel circuit, an insulating layer including a contact hole, a lower electrode connected to the pixel circuit via the contact hole, an upper electrode, an organic layer between the lower electrode and the upper electrode, a rib formed of an inorganic material and including an aperture, and a partition above the rib. The organic layer includes a first organic layer in contact with the lower electrode via the aperture and a second organic layer located on the partition and spaced apart from the first organic layer. The partition overlaps an entire of the contact hole in plan view.

What is claimed is: 
     
         1 . A display device comprising:
 a substrate;   a circuit disposed above the substrate;   an insulating layer which covers the pixel circuit and includes a contact hole;   a lower electrode disposed above the insulating layer and connected to the pixel circuit via the to contact hole;   an upper electrode opposing the lower electrode; an organic layer located between the lower electrode and the upper electrode and including a light-emitting layer;   a rib formed of an inorganic material and including an aperture which overlaps the lower electrode; and a partition disposed above the rib,   wherein   the organic layer includes a first organic layer in contact with the lower electrode via the aperture and a second organic layer located on the partition and spaced apart from the first organic layer, and   the partition overlaps an entire of the contact hole in plan view.   
     
     
         2 . The display device of  claim 1 , wherein 
 the partition includes a lower portion disposed on the rib and an upper portion disposed on the lower portion and including an end portion protruding from a side surface of the lower portion, and   the second organic layer is disposed on the upper portion.   
     
     
         3 . The display device of  claim 2 , wherein 
 the side surface of the lower portion is located between the contact hole and the aperture.   
     
     
         4 . The display device of  claim 3 , wherein
 a distance between the side surface and the contact hole in plan view is 2.0 µm or more.   
     
     
         5 . The display device of  claim 2 , wherein
 the upper electrode includes a first upper electrode which covers the first organic layer and a second upper electrode which covers the second organic layer and is spaced apart from the first upper electrode, and   the first upper electrode is in contact with the side surface.   
     
     
         6 . The display device of  claim 5 , wherein
 the lower portion has conductivity.   
     
     
         7 . The display device of  claim 5 , further comprising:
 a sealing layer formed of an inorganic material and covering the first upper electrode, the side surface and the second upper electrode.   
     
     
         8 . The display device of  claim 1 , wherein
 the lower electrode includes a first side located between the contact hole and the aperture in plan view, and a protruding portion protruding from the first side and overlapping the contact hole in plan view.   
     
     
         9 . The display device of  claim 1 , wherein 
 the partition surrounds the aperture in plan view.   
     
     
         10 . The display device of  claim 1 , wherein the second organic layer surrounds the aperture in plan view. 
     
     
         11 . The display device of  claim 1 , wherein
 a thickness of the rib is less than a thickness of the partition.   
     
     
         12 . The display device of  claim 1 , wherein 
 the rib and the partition each include a recess portion located above the contact hole.   
     
     
         13 . The display device of  claim 1  comprising:
 a first sub-pixel, a second sub-pixel and a third sub-pixel each including the pixel circuit, the contact hole, the lower electrode, the upper electrode, the organic layer and the aperture, wherein 
 the first sub-pixel and the third sub-pixel are aligned in a first direction, 
 the first sub-pixel and the second sub-pixel are aligned in a second direction which intersects the first direction, and 
 the partition includes a first partition disposed between the aperture of the first sub-pixel and the aperture of the second sub-pixel, and a second partition disposed between the aperture of the first sub-pixel and the aperture of the third sub-pixel. 
 
     
     
         14 . The display device of  claim 13 , wherein
 a width of the first partition along the second direction is greater than a width of the second partition along the first direction.   
     
     
         15 . The display device of  claim 13 , wherein 
 the contact hole of the first sub-pixel overlaps the first partition in plan view.   
     
     
         16 . The display device of  claim 15 , wherein
 the contact hole of the second sub-pixel overlaps the first partition in the plan view and is aligned with the contact hole of the first sub-pixel along the first direction.   
     
     
         17 . The display device of  claim 13 , wherein the contact hole of the first sub-pixel is located
 between the organic layer of the first sub-pixel and the organic layer of the second sub-pixel along the second direction.   
     
     
         18 . The display device of  claim 13 , wherein
 the second organic layer of the first sub-pixel and the second organic layer of the second sub-pixel are located on the first partition and are spaced apart from each other along the second direction.   
     
     
         19 . The display device of  claim 13 , wherein
 the upper electrode of each of the first sub-pixel and the second sub-pixel includes a first upper electrode which covers the first organic layer and a second uppper electrode disposed on the first parition, and   the second upper electrode of the first sub-pixel and the second upper electrode of the second sub-pixel are spaced apart from each other along the second direction.   
     
     
         20 . The display device of  claim 13 , wherein
 each of the first sub-pixel and the second sub-pixel comprises an sealing layer which covers the upper electrode, and   the sealing layer of the first sub-pixel and the sealing layer of the second sub-pixel are spaced apart from each other along the second direction.