Abstract
In this study, we report the enhanced light extraction efficiency of light emitting diode (LED) devices by employing multi-chip arrayed LED structures. We analyze the optoelectronic property of multi-chip arrayed LED structures with 16, 36 and 64 LED chips in the same 1 × 1 mm2 device as well as 2 × 2 and 3 × 3 mm2 devices. When compared with a conventional large area single-chip LED structure with the same device size, the multi-chip arrayed LED structures generally exhibit enhanced light extraction efficiency and electrical efficiency owing to the reduced current crowding effect. The effect of chip and device size on the LED performance is discussed.
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