Dual emission organic light emitting display device and...

Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...

Reexamination Certificate

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Reexamination Certificate

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08049240

ABSTRACT:
A dual emission organic light emitting display device and method of driving the same. The display device includes a pixel driver and an organic light emitting diode that can display different images on a top surface and a bottom surface and/or a same image on both the top and bottom surfaces. The display device includes a top/bottom selector that receives a driving current from the pixel driver and selectively supplies the driving current to a top organic light emitting diode or a bottom organic light emitting diode. The top/bottom selector includes transistors, which are connected between the pixel driver and the organic light emitting diode and select a top emission operation or a bottom emission operation. Here, the circuit configuration of the pixel driver is reduced so that the dual emission organic light emitting display device can be improved in terms of a layout, an interconnection, and an aperture ratio.

REFERENCES:
patent: 2004/0066358 (2004-04-01), Numao
patent: 2004/0227764 (2004-11-01), Endo
patent: 2002-0097420 (2002-12-01), None
Korean Patent Abstracts for Publication No. 1020020097420 A; Date of Publication of Application Dec. 31, 2002 in the name of Heum Il Baek, et al.

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