Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2011-03-29
2011-03-29
Ton, Toan (Department: 2889)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
Reexamination Certificate
active
07915814
ABSTRACT:
A top-emission-type organic EL display device which exhibits uniform screen brightness is realized by preventing a voltage drop of an upper electrode formed of a transparent conductive film. Pixels each of which is sandwiched between an upper electrode and a lower electrode are arranged in a matrix array to form a display region. An auxiliary electrode extends in the lateral direction between the pixels and the pixels for preventing a voltage drop of the upper electrode. A current supply line which supplies an electric current to the upper electrode and the auxiliary electrodes are made conductive with each other by forming a through hole in an insulation layer. To ensure reliability of connection at the through hole, a contact electrode made of metal which overlaps with the auxiliary electrode is formed on the through hole by vapor deposition.
REFERENCES:
patent: 6538374 (2003-03-01), Hosokawa
patent: 6900470 (2005-05-01), Kobayashi et al.
patent: 2002/0158835 (2002-10-01), Kobayashi et al.
patent: 2001-230086 (2000-02-01), None
patent: 2002-318556 (2001-04-01), None
Matsudate Noriharu
Ookawara Takeshi
A. Marquez, Esq. Juan Carlos
Featherly Hana S
Hitachi Displays Ltd.
Stites & Harbison PLLC
Ton Toan
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