| 摘要 |
<p>The present invention relates to a light emitting device and, more particularly, to a lighting apparatus using an organic light emitting device for improving light extraction efficiency. The present invention includes a circuit board, a plurality of organic light emitting device panels which are electrically connected on the circuit board to form equi-potential, and a light extraction panel which is located on the organic light emitting device panels and includes a light extraction pattern.</p> |
