Blue organic electroluminescent device and display using same

Details Blue organic electroluminescent device and display using same Blue organic electroluminescent device and display using same

2007-05-22

2007-05-22

Patel, Vip (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S506000

Reexamination Certificate

active

11257147

ABSTRACT:
A blue organic electroluminescent device including a first reflective member (21), a second reflective member (23) and an emitting layer (22) arranged between the first and the second reflective members (21), (23); wherein the emitting layer comprises a first organic luminescent medium emitting light with a blue first peak wavelength and a second medium emitting light with a second peak wavelength; each of lights emitted from the first and second organic luminescent mediums are interfered with between the first and second reflective members (21), (23) to enhance light emitted from the first organic luminescent medium; and light taken out to outside has a first peak wavelength and a second peak wavelength that satisfy the following relationship:in-line-formulae description="In-line Formulae" end="lead"?I1>I2×5,I1<I2×100in-line-formulae description="In-line Formulae" end="tail"?wherein I1 is a luminous intensity at the first peak wavelength and I2 is a luminous intensity at the second peak wavelength.

REFERENCES:
patent: 5949187 (1999-09-01), Xu et al.
patent: 06-275381 (1994-09-01), None
patent: 07-142171 (1995-06-01), None
patent: 08/008061 (1996-01-01), None
patent: 2004-099464 (2004-04-01), None
patent: WO 01/39554 (2001-05-01), None

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