Display device and head mounted display device

A display device, comprising:

• a substrate;
• a sub-pixel disposed on the substrate and that includes a pixel electrode, a light emitting layer, and a common electrode;
• a pixel defining layer that defines the sub-pixel;
• a capping layer disposed on the pixel defining layer;
• a micro lens disposed on the capping layer and that overlaps the sub-pixel;
• and
• a total reflection pattern disposed on the capping layer and that overlaps the pixel defining layer and surrounds the micro lens,
• wherein the pixel electrode includes a first pixel electrode and a second pixel electrode disposed on the first pixel electrode, wherein a side surface of the second pixel electrode has a first inclination angle with respect to a top surface of the first pixel electrode,
• the total reflection pattern has a second inclination angle on a side surface in contact with the micro lens, and
• the second inclination angle is greater than the first inclination angle.

A head mounted display device, comprising:

• a display unit;
• and
• a lens unit disposed on a path of light emitted from the display unit,
• wherein the display unit includes:
• a substrate;
• a sub-pixel disposed on the substrate and that includes a pixel electrode, a light emitting layer, and a common electrode;
• a pixel defining layer that defines the sub-pixel;
• a capping layer disposed on the pixel defining layer;
• a micro lens disposed on the capping layer and that overlaps the sub-pixel;
• and
• a total reflection pattern disposed on the capping layer and that overlaps the pixel defining layer and surrounds the micro lens, wherein
• the micro lens has a refractive index greater than a refractive index of the total reflection pattern and less than or equal to a refractive index of the capping layer,
• wherein the pixel electrode includes a first pixel electrode and a second pixel electrode disposed on the first pixel electrode,
• wherein a side surface of the second pixel electrode has a first inclination angle with respect to a top surface of the first pixel electrode,
• wherein the total reflection pattern has a second inclination angle on a side surface in contact with the micro lens, and
• the second inclination angle is greater than the first inclination angle.