Top-emission type organic electroluminescence display device...

Details Top-emission type organic electroluminescence display device... Top-emission type organic electroluminescence display device...

2005-03-22

2008-11-25

Roy, Sikha (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S505000, C313S506000, C313S498000, C313S483000, C428S690000, C428S917000

Reexamination Certificate

active

07456566

ABSTRACT:
The present invention relates to a top-emission type organic electroluminescence display device, more particularly, to a top-emission type organic electroluminescence display device comprising double passivation layers of an inorganic insulation layer and an organic planarization layer formed on an upper part of a thin film transistor comprising a semiconductor layer, gate electrode and source/drain electrodes on a substrate; a reflection layer formed between the double passivation layers; and a first electrode layer formed of a transparent material and formed on a reflection layer. Furthermore, a top-emission type organic electroluminescence display device additionally comprises a reflection layer between the passivation layers and the first electrode layer to maximize reflection efficiency. Additionally, luminance between pixels is uniformed by stabilizing contact resistance between the electrodes during driving of the display device with the source/drain electrodes of the thin film transistor being directly contacted with the transparent electrode layer.

REFERENCES:
patent: 6448580 (2002-09-01), Arai et al.
patent: 6689492 (2004-02-01), Yamazaki et al.
patent: 2004/0018797 (2004-01-01), Murakami et al.
patent: 2007/0231501 (2007-10-01), Finley

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