Organic light emitting diode having a resonant optical...

Details Organic light emitting diode having a resonant optical... Organic light emitting diode having a resonant optical...

2011-07-26

2011-07-26

Won, Bumsuk (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S112000

Reexamination Certificate

active

07986091

ABSTRACT:
According to the invention, the extractor is a reflection concentrator. The entry section of the extractor has a larger area than its exit section. The reflecting side walls of the extractor have a suitable shape so that it makes an angle called the cut-off angle θlim, which corresponds to a limiting wavelength λC-limfor transmission from this extractor for a given optical cavity. Applied to diode-based image displays, the invention broadens the viewing angles and improves the colour purity of the images displayed.

REFERENCES:
patent: 2003/0034938 (2003-02-01), Yamada
patent: 2003/0164679 (2003-09-01), Hamano et al.
patent: 2004/0051447 (2004-03-01), Okinaka et al.
patent: 2004/0150329 (2004-08-01), Asai et al.
patent: 2005/0140277 (2005-06-01), Suzuki et al.
patent: 2005/0224826 (2005-10-01), Keuper et al.
patent: 0801429 (1997-10-01), None
patent: WO 2005/098987 (2005-10-01), None
Search Report Dated Jan. 22, 2007.

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