Display device including lower electrodes isolated by an insulator portion and method of manufacturing the same

A display device comprising:

• a substrate;
• light emitting elements arranged over a surface of the substrate;
• a protection layer arranged to cover the light emitting elements;
• and
• a color filter layer arranged above the protection layer,
• wherein the light emitting elements include lower electrodes isolated from each other by an insulator portion, an organic layer that includes a light emitting layer and that is arranged over the lower electrodes and over a portion that is arranged between the lower electrodes and over the insulator portion, and an upper electrode arranged to cover the organic layer,
• the protection layer includes an isolating portion provided over and overlapped with a portion between the lower electrodes,
• the isolating portion is spaced apart from the upper electrode,
• the isolating portion includes a trench extending from an upper surface of the protection layer toward the substrate, and
• a depth of the trench is larger than a width of the trench.