Light emitting device and method of fabricating same

Abstract

A light emitting device includes a substrate including a light emitting region. A first electrode is in the light emitting region. A second electrode is in the light emitting region and spaced apart from the first electrode. A light emitting element is between the first electrode and the second electrode. A first contact electrode connects an end of the light emitting element to the first electrode. A second contact electrode connects another end of the light emitting element to the second electrode. The first contact electrode and the second contact electrode have a thickness larger than or equal to that of the first electrode and the second electrode.

What is claimed is: 
     
         1 . A light emitting device comprising:
 a substrate comprising a light emitting region;   a first electrode in the light emitting region;   a second electrode in the light emitting region and spaced apart from the first electrode;   a light emitting element between the first electrode and the second electrode;   a first contact electrode connecting an end of the light emitting element to the first electrode; and   a second contact electrode connecting another end of the light emitting element to the second electrode,   wherein the first contact electrode and the second contact electrode have a thickness larger than or equal to a thickness of the first electrode and the second electrode.   
     
     
         2 . The light emitting device of  claim 1 , further comprising wall structures respectively arranged between the substrate and the first electrode and between the substrate and the second electrode. 
     
     
         3 . The light emitting device of  claim 2 , wherein the first electrode and the second electrode entirely cover the wall structures. 
     
     
         4 . The light emitting device of  claim 1 , wherein the end of the light emitting element is on the first electrode, and the another end of the light emitting element is on the second electrode. 
     
     
         5 . The light emitting device of  claim 1 , further comprising wall structures respectively arranged on the first electrode and the second electrode. 
     
     
         6 . The light emitting device of  claim 1 , wherein the light emitting element has a cylindrical shape or polygonal column shape having a micro or nano scale. 
     
     
         7 . The light emitting device of  claim 1 , wherein the first contact electrode and the second contact electrode are transparent electrodes. 
     
     
         8 . The light emitting device of  claim 1 , further comprising a protective layer configured to protect the first electrode, the second electrode, the first contact electrode, the second contact electrode, and the light emitting element. 
     
     
         9 . The light emitting device of  claim 8 , wherein an end of the first electrode is covered by the first contact electrode,
 an end of the second electrode is covered by the second contact electrode, and   another end of the first electrode and another end of the second electrode are covered by the protective layer.   
     
     
         10 . The light emitting device of  claim 9 , wherein the end of the light emitting element is covered by the first contact electrode, and the another end of the light emitting element is covered by the second contact electrode.