Patent ID: 7391151

Claim:
An organic light emitting diode, comprising: lower electrodes, one for each pixel unit region of a substrate; luminescent layers, each formed on a respective one of the lower electrodes; and an upper electrode formed above the substrate; wherein the upper electrode is formed so as to surround the luminescent layers so that the upper electrode functions as a reflection layer for reflecting total light reflected while light emitted from the luminescent layers is being pulled out through the substrate; said organic light emitting diode further comprising an insulating layer disposed on the substrate, and source and drain electrodes for each unit pixel region disposed on the insulating layer, wherein grooves are formed directly above at least one of the source and drain electrodes for each unit pixel region, and wherein the upper electrode is formed in the grooves; said insulating layer including a first insulating film on which said source and drain electrodes are formed, a second insulating film disposed above said first insulating film and including a thin film transistor (TFT) having said source and drain electrodes formed on the first insulating film, and a third insulating film disposed above said first and second insulating films, and having an opening for exposing a portion of the lower electrodes.