White light tandem OLED

Details White light tandem OLED White light tandem OLED

2007-04-30

2010-10-19

Patel, Nimeshkumar D. (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S506000, C428S690000

Reexamination Certificate

active

07816859

ABSTRACT:
A tandem white light-emitting OLED device is disclosed comprising a spaced anode and cathode, a light reflector associated with either the anode or the cathode, and at least two white light emitting units. The first white light-emitting unit has a set of at least two emission peaks in the blue and yellow spectral regions that are more intense than any other emission peaks that may be present in the emission spectrum of the first white light-emitting unit. The second white light-emitting unit is disposed closer to the reflector than the first white light-emitting unit and includes a set of at least three emission peaks in the blue, green, and red spectral regions that are more intense than any other emission peaks that may be present in the emission spectrum of the second white light-emitting unit. An intermediate connector is disposed between the first and second white light-emitting units.

REFERENCES:
patent: 4769292 (1988-09-01), Tang et al.
patent: 4885211 (1989-12-01), Tang et al.
patent: 5683823 (1997-11-01), Shi et al.
patent: 6107734 (2000-08-01), Tanaka et al.
patent: 6337492 (2002-01-01), Jones et al.
patent: 6717358 (2004-04-01), Liao et al.
patent: 6903378 (2005-06-01), Cok
patent: 2003/0045676 (2003-03-01), Kingston et al.
patent: 2003/0189401 (2003-10-01), Kido et al.
patent: 2006/0003184 (2006-01-01), Hatwar et al.
patent: 07-142169 (1995-06-01), None
patent: 2003-045676 (2003-02-01), None
patent: 2005/115059 (2005-12-01), None
Tokito et al.,High-Efficiency White Phosphorescent Organic Light-Emitting Devices with Greenish-Blue and Red-Emitting Layers, App. Phys. Lett., vol. 83, No. 12, Sep. 22, 2003, pp. 2459-2461.
Matsumoto, T., et al,27.5L: Late-News Paper: Multiphoton Organic EL Device Having Charge Generation Layer, SID 03 Digest, 2003, pp. 979-981.
Kido et al.,White Light-Emitting Organic Electroluminescent Devices Using the Poly(N- Vinylcarbazole)Emitter Layer Doped with Three Fluorescent Dyes, Appl. Phys. Lett., vol. 64, No. 7, Feb. 14, 1994, pp. 815-817.

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