Patent ID: 7816859
Filing Date: 2010-10-19
Classification: C09K,H01L,H05B,Y02B

Abstract:
1. A tandem white light-emitting OLED device comprising: a. a spaced anode and cathode wherein the cathode is reflective metal including aluminum or an alloy of aluminum and the anode is a light transmissive conductive metal oxide; b. a first white light emitting unit having an emission spectrum that includes a first set of at least two emission peaks that are more intense than any other emission peaks that may be present in the emission spectrum of the first white light-emitting unit, such first set including: c. a second white light-emitting unit disposed closer to the reflective metal cathode than the first white light-emitting unit, such second white light-emitting unit having an emission spectrum that includes a second set of at least three emission peaks that are more intense than any other emission peaks that may be present in the emission spectrum of the second white light-emitting unit, such second set including: d. an intermediate connector disposed between the first and second white light-emitting units.