Light-emitting device and its use

Details Light-emitting device and its use Light-emitting device and its use

2007-04-24

2007-04-24

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S506000, C428S917000

Reexamination Certificate

active

10779005

ABSTRACT:
A light-emitting device comprises a layer including an emission region and provided between an anode and a cathode wherein the anode has a visible light (with a wavelength of 380 to 780 nm) transmittance ranging from 35 to 75%, and the anode has a work function of 3.0 to 7.0 eV whereby the device has an improved contrast characteristic while keeping high luminance.

REFERENCES:
patent: 5977704 (1999-11-01), Shi et al.
patent: 5989737 (1999-11-01), Xie et al.
patent: 6296954 (2001-10-01), Arai et al.
patent: 6468676 (2002-10-01), Ueda et al.
patent: 0805143 (1997-11-01), None
patent: 0845925 (1998-06-01), None
patent: 0880304 (1998-11-01), None
patent: 0994517 (2000-04-01), None
patent: 9747050 (1997-12-01), None

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