White organic light emitting device

Abstract

Provided is a white organic light emitting device (OLED). The white OLED includes a double cavity structure in which a first region and a second region are defined based on a transparent common electrode using a top emission method. A green phosphorescence or fluorescence emission layer is disposed in the first region, a blue fluorescence emission layer is disposed in the second region, a red emission layer is optionally disposed in the first region or the second region, and an optical path control layer (OPCL) for widening color gamut is disposed in a region in which green light and blue light are emitted so that color coordinates are not greatly changed due to a change in thickness of the OPCL and white light having good quality is obtained.

Dependencies are inferred from the claim text.