Light emitting device

A light emitting device comprises a first substrate, a pixel isolation structure, a plurality of electroluminescent structures, and a second substrate, said first substrate and said second substrate are oppositely disposed, and said second substrate is disposed on one side of said pixel isolation structure far away from said first substrate, said pixel isolation structure is disposed on the surface of one side of said first substrate, said pixel isolation structure forms a plurality of mutually isolated sub-pixel regions on the surface of said first substrate, said electroluminescent structures are disposed on a portion of said first substrate corresponding to each said sub-pixel region, wherein said sub-pixel regions further comprise:

• a quantum dot layer disposed in at least one said sub-pixel region, wherein said quantum dot layer in each said sub-pixel region is located on one side of said electroluminescent structures far away from said first substrate or said quantum dot layer is located between said electroluminescent structure and said first substrate.