AC light emitting diode having improved transparent...

Details AC light emitting diode having improved transparent... AC light emitting diode having improved transparent...

2011-08-09

2011-08-09

Weiss, Howard (Department: 2814)

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

Incoherent light emitter structure

Plural light emitting devices

C257S096000, C257S099000, C257S103000

Reexamination Certificate

active

07994523

ABSTRACT:
Disclosed is an AC light emitting diode having an improved transparent electrode structure. The light emitting diode comprises a plurality of light emitting cells formed on a single substrate, each of the light emitting cells having a first conductive type semiconductor layer, a second conductive type semiconductor layer positioned on one region of the first conductive type semiconductor layer, and an active layer interposed between the first and second conductive type semiconductor layers. A transparent electrode structure is positioned on each of the light emitting cells. The transparent electrode structure includes at least two portions separated from each other, or a center portion and branches laterally extending from both sides of the center portion. Meanwhile, wires electrically connect adjacent two of the light emitting cells. Accordingly, a plurality of light emitting cells are electrically connected, whereby a light emitting diode can be provided which can be driven under AC power source. Also, an improved transparent electrode structure is employed, so that the current density can be prevented from being locally increased.

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Taiwan Intellectual Property Office Preliminary Notice of the First Office Action dated Jan. 20, 2010.
German Office Action dated Jan. 26, 2009.
TW Preliminary Notice of the First Office Action dated Aug. 25, 2010, May 20, 2011.

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