| 摘要 |
The present disclosure provides a light emitting device including a substrate and a serially-connected LED array of a plurality of LED cells epitaxially formed on the substrate, and the serially-connected LED array including a first LED cell; a second LED cell; and a serially-connected LED sub-array including at least three LED cells intervening the first and the second LED cells; wherein each LED cell of the serially-connected LED array including a first semiconductor layer formed on the substrate; a second semiconductor layer formed on the first semiconductor layer; and an active layer formed between the first semiconductor layer and the second semiconductor layer; wherein the first LED cell and the second LED cell are adjacent to each other, and the distance between the first semiconductor layer of the first LED cell and the first semiconductor layer of the second LED cell is larger than 30 μm.
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