Luminance improved organic electroluminescent device

Details Luminance improved organic electroluminescent device Luminance improved organic electroluminescent device

2008-05-15

2010-10-19

Patel, Nimeshkumar D. (Department: 2879)

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

C313S506000

Reexamination Certificate

active

07815479

ABSTRACT:
An organic light emitting diode (OLED) is capable of improving light efficiency per pixel unit by forming a cathode electrode to cover an anode electrode, thereby focusing light emitted from a luminescent layer per pixel unit. The OLED comprises: a second insulating film formed on a substrate including a TFT with source/drain electrodes formed on a first insulating film; a lower electrode formed on the second insulating film and connected to one of the source/drain electrodes; a third insulating film having an opening for exposing a portion of the lower electrode; a luminescent layer formed on the lower electrode inside the opening; a groove formed to surround the luminescent layer; and an upper electrode formed on the substrate including the groove so that the upper electrode surrounds the luminescent layer. The upper electrode functions as a reflection layer for reflecting total light while light emitted from the luminescent layer is being pulled out through the substrate.

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Japanese Office Action for corresponding Japanese Patent Application No. 2003-309282 issued on Jan. 9, 2007.
Chinese Office Action for corresponding Chinese Patent Application No. 2003101206802 issued on Jan. 26, 2007.
Certificate of Patent from the Chinese Patent Office issued in Applicant's corresponding Chinese Patent Application No. 200310120680.2 dated Mar. 18, 2009.

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