Led display apparatus

A display apparatus, comprising:

• a display substrate;
• a plurality of light emitting devices disposed on the display substrate;
• a plurality of circuit electrodes disposed between the light emitting devices and the display substrate;
• and
• a transparent layer covering the light emitting devices and the circuit electrodes,
• wherein at least one of the light emitting devices includes:
• a first LED sub-unit configured to emit light having a first wavelength;
• a second LED sub-unit adjacent to the first LED sub-unit and configured to emit light having a second wavelength;
• a third LED sub-unit adjacent to the second LED sub-unit and configured to emit light having a third wavelength;
• and
• a substrate disposed on the third LED sub-unit, and
• wherein a refractive index of the transparent layer is greater than a refractive index of air and less than a refractive index of the substrate disposed on the third LED sub-unit.

A display apparatus, comprising:

• a display substrate;
• a plurality of light emitting devices disposed on the display substrate;
• a plurality of circuit electrodes disposed between the light emitting devices and the display substrate;
• and
• a light transmitting layer covering the light emitting devices and the circuit electrodes,
• wherein at least one of the light emitting devices includes:
• a first LED sub-unit configured to emit light having a first wavelength;
• a second LED sub-unit configured to emit light having a second wavelength;
• a third LED sub-unit configured to emit light having a third wavelength;
• and
• a substrate disposed on the third LED sub-unit, and
• wherein a refractive index of the light transmitting layer is greater than a refractive index of air and less than a refractive index of the substrate disposed on the third LED sub-unit.