| 摘要 |
<p>A light emitting diode (LED) (10) with enhanced light extraction comprises a conductive first spreader layer (20) and a plurality of micro light emitting diodes (micro-LEDs) (12) separately disposed on a surface of the first spreader layer (20). Each of the micro-LEDs comprises a p-type layer, an n-type layer and an active layer (14) sandwiched between the p-type and n-type layers. Either of the p-type or n-type layer is a top layer (16) and the other layer is the bottom layer (18), and current from the first spreader layer (20) spreads into the bottom layer (18). The LED (10) also comprises a second spreader layer (24) over the micro-LEDs (12) with current from the second spreader layer (24) spreading into said top layer (16). A bias applied across the first and second spreader layers (20, 24) causes the micro-LEDs (12) to emit light. Light extraction elements (LEEs) (82,84,86,88,90,92,94,101,102,103,112,124,131,132,134,142,152,162) are integrated with the micro-LEDs (12) to enhance light extraction.</p> |
