OLED device having improved contrast

Details OLED device having improved contrast OLED device having improved contrast

2008-07-22

2008-07-22

Patel, Vip (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S504000

Reexamination Certificate

active

07402951

ABSTRACT:
An organic light-emitting diode (OLED) device, comprises: a first electrode and a second transparent electrode having one or more organic layers formed there-between, at least one organic layer being light-emitting; and a contrast enhancement element formed on a side of the second transparent electrode opposite the organic layers, wherein the contrast enhancement element comprises a patterned reflective layer for reflecting emitted light and a corresponding light-absorbing layer for absorbing ambient light, wherein the reflective layer is located between the light-absorbing layer and the second transparent electrode and wherein the corresponding layers form one or more transparent openings through the reflective and light-absorbing layers so that light emitted by the light-emitting organic layer passes through the transparent openings.

REFERENCES:
patent: 6936960 (2005-08-01), Cok
patent: 2001/0026124 (2001-10-01), Liu et al.
patent: 2003/0030055 (2003-02-01), Nakano et al.
patent: 2004/0189894 (2004-09-01), Kim
patent: 2004/0217381 (2004-11-01), Park et al.
patent: 2005/0073228 (2005-04-01), Tyan et al.
patent: 1406474 (2004-04-01), None
patent: WO 02/37580 (2002-05-01), None

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