| 摘要 |
An illuminator (1) is manufactured by embossing an aluminium preform to provide a structured substrate base (21) with cavities (25) for LEDs and recesses (26) for tracks. The substrate is anodised to provide an aluminium oxide insulating layer (30) over the structured surface. A metal layer (35) is then applied over the insulating layer (30), and this is etched to leave metal pads in the cavities and tracks in the recesses (26). LEDs (50) are placed in the cavities and they are wire-bonded to the exposed metal tracks. This manufacturing method allows versatility in choice of configuration of 5 illuminator by simple embossing a desired substrate shape. Also, the anodisation provides an excellent and durable insulating layer, which has the major benefit of being conformal with the structured surface. |
