Patent ID: 8552639

Claim:
A white organic light emitting device (WOLED), comprising: first and second electrodes disposed spaced-apart from and opposite to each other; an electroluminescence (EL) light emitting unit disposed between the first and second electrodes, the EL light emitting unit comprising a first light emitting layer and a second light emitting layer which emit light using combinations of electrons and holes; and a non-electroluminescence (NEL) light emitting unit disposed between the first and second electrodes, the NEL light emitting unit generating a third light having a wavelength different from those of light emitted by the first light emitting layer and the second light emitting layer by using light emitted by the EL light emitting unit, with the first electrode and the second electrode defining an optical cavity in which the EL light emitting unit is disposed, and with the NEL light emitting unit generating the third light by using a resonance structure between the first electrode and the second electrode.