Multicolor light emission apparatus with multiple different...

Details Multicolor light emission apparatus with multiple different... Multicolor light emission apparatus with multiple different...

2005-09-27

2005-09-27

Bruce, David V. (Department: 2882)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S504000, C313S506000, C428S609000

Reexamination Certificate

active

06949878

ABSTRACT:
A multicolor light emission apparatus is disclosed which comprises a first organic EL element having a first maximum emission wavelength in a blue light wavelength region; and a second organic EL element having a second maximum emission wavelength longer than the first maximum emission wavelength; wherein the first organic EL element comprises a first light emission layer containing a first host and a first dopant, and the second organic EL element comprises a second emission layer containing a second host and a second dopant, and wherein each of the first and second hosts has an emission wavelength region which is shorter than the blue light wavelength region.

REFERENCES:
patent: 5294870 (1994-03-01), Tang et al.
patent: 6166489 (2000-12-01), Thompson et al.
patent: 6278236 (2001-08-01), Madathil et al.
patent: 6459199 (2002-10-01), Kido et al.
patent: 6606110 (2003-08-01), Gaudiana et al.
patent: 6626722 (2003-09-01), Takematsu et al.

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