Because of
the many advantages of LED, such as more energy-saving, life of up to 5
million hours of safe ultra-low-voltage operation, does not contain
mercury, it was regarded as lighting, new hope. LED formed by a
semiconductor chip, which previously only used electronic products on
the status display lights (for example, a small red light on the
old-fashioned radio), but its use has been extended to liquid crystal
display backlighting, automotive lighting, traffic lights and so on. |