OLED with semi-transparent layer

Details OLED with semi-transparent layer OLED with semi-transparent layer

2007-08-31

2010-11-30

Roy, Sikha (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S503000, C313S504000, C313S506000

Reexamination Certificate

active

07843123

ABSTRACT:
The organic light-emitting device of the present invention includes a plurality of organic light-emitting elements including an organic light-emitting element showing a first emission color and at least one organic light-emitting element showing a different emission color from the first emission color, each of the organic light-emitting elements including: a first electrode having a reflective surface; a second electrode placed on a light extraction side and including a semi-transparent layer; an organic compound layer including a light-emitting layer and formed between the first electrode and the second electrode; and a micro cavity structure for resonating light emitted from the light-emitting layer between the reflective surface and the semi-transparent layer, wherein the semi-transparent layer in the organic light-emitting element showing the first emission color is different in thickness and/or material from the semi-transparent layer in the at least one organic light-emitting element showing the different emission colors.

REFERENCES:
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patent: 7218049 (2007-05-01), Yamada et al.
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patent: 2007/0257609 (2007-11-01), Fukuda et al.
patent: 2004-127794 (2004-04-01), None
patent: WO 01/39554 (2001-05-01), None
Neyts et al., “Semitransparent metal or distributed Bragg reflector for wide-viewing-angle organic light-emitting-diode micocavities,” Jan. 2000, J. Opt. Soc. Am. B, vol. 17, No. 1, pp. 114-119.
Peng et al., “High-efficiency Microcavity Top-emitting Organic Light-emitting Diodes Using Silver Anode,”Appl. Phys. Lett., vol. 88, 073517, 1-3 (2006).

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