A light emitting lamp and a backlight unit having the same are disclosed. The light emitting lamp is capable of reducing a tube voltage thereof and increasing an effective light emitting region via an increased area of external electrodes. The light emitting lamp includes a linear lamp tube having a plurality of protuberances formed at both ends thereof, and first and second external electrodes externally arranged at both ends of the lamp tube and having a plurality of protuberances to be engaged with the protuberances of the lamp tube.

 
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