The backlighting system includes a large array of blue LEDs that generate exceptional brightness and modulate independently based on the content.

该背光系统包括一支大阵列的蓝色发光二极管，其创造杰出的亮度，并根据内容独立调节亮度。

The other is to use only blue LEDs but coat them with a type of fluorescent substance called phosphor.

另一种是仅使用蓝色 LED，但在其上涂上一种称为磷光体的荧光物质。

But to simply illuminate a street with a white light, manufacturers often opt for the cheaper and more efficient blue-LED-and-phosphor-coating combination.

但为了简单地用白光照亮街道，制造商通常会选择更便宜、更高效的蓝光 LED 和荧光粉涂层组合。

Although blue LED lights are, in principle, deep blue in color, they do naturally have a bit of a purple and violet tint, he explains.

他解释说，虽然蓝色 LED 灯原则上是深蓝色，但它们自然带有一点紫色和紫罗兰色。