Organic electroluminescent display device

Details Organic electroluminescent display device Organic electroluminescent display device

2011-08-23

2011-08-23

Lee, Eugene (Department: 2815)

Active solid-state devices (e.g., transistors, solid-state diode

Organic semiconductor material

C257S059000, C257S072000

Reexamination Certificate

active

08003978

ABSTRACT:
The invention prevents a photocurrent due to external light and a variation in characteristics of transistors or a failure by a short circuit due to the influence of a back channel. A light shield film made of a nonconductive material is formed on an insulation substrate. A back gate insulation film is formed covering the light shield film. An active layer is formed on this back gate insulation film. A gate insulation film is formed covering the active layer, and a gate electrode is formed on the gate insulation film. The light shield film is disposed covering the active layer with the back gate insulation film interposed therebetween, having a function of shielding the active layer from external light entering through the insulation substrate.

REFERENCES:
patent: 5673955 (1997-10-01), Neubauer
patent: 6621103 (2003-09-01), Yamada
patent: 6812912 (2004-11-01), Mlyajima et al.
patent: 2002/0038998 (2002-04-01), Fujita et al.
patent: 2002/0063261 (2002-05-01), Zhang
patent: 2002/0140343 (2002-10-01), Hirabayashi
patent: 2003/0147018 (2003-08-01), Sano et al.
patent: 2004/0041518 (2004-03-01), Yoneda
patent: 2005/0088369 (2005-04-01), Yoshioka
patent: 2004-134356 (2004-04-01), None

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