| 摘要 |
A light emitting diode module is provided to detect partial deterioration of light intensity of a light emitting diode package by using a light receiving device as at least one light emitting diode package not driven in a light emitting diode module. A plurality of light emitting diode packages(220,240) are sequentially driven by a driving part(100). At least one of the plurality of light emitting diode packages is operated as a light receiving device. The driving part adjusts current or voltage applied to the light emitting diode package by using the current or voltage measured by the light emitting diode package operating as a light receiving device. The plurality of light emitting diode packages function as a light emitting device when current is applied, and function as a light receiving device when current is not applied.
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