Light emitting device

Details Light emitting device Light emitting device

2011-03-08

2011-03-08

Choi, Jacob Y (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S312000

Reexamination Certificate

active

07902770

ABSTRACT:
A light emitting element group includes a plurality of light emitting element units connected in series. A first current limiting circuit is arranged in series with the light emitting element group, and limits a first drive current flowing from one end to the other end of the light emitting element group. A second current limiting circuit is arranged in parallel to the first current limiting circuit, and limits a second drive current flowing in an opposite direction to the first drive current in the light emitting element group. The light emitting element units are configured to include a first light emitting element and a second light emitting element; an anode of the first light emitting element and a cathode of the second light emitting element are connected, and an anode of the second light emitting element and a cathode of the first light emitting element are connected.

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International Preliminary Report on Pantentability for Application No. PCT/JP2006/322770; Issuance date May 20, 2008.
International Search Report for Application No. PCT/JP2006/322770; Mailing date of report Feb. 6, 2007.

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