backlight
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中文词源： backlight
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常见考点例句：

Since they emit light directly , oled displays do not need a backlight .

由于也是自身发光，oled显示器可以不用背光灯。

Lcd displays , by contrast , filter light from a backlight through an array of tiny coloured filters and liquid-crystal shutters .

相比之下，液晶显示技术通过一排微型的彩色过滤器与液晶体检波器来从背光中过滤光源。

Very often , the backlight alone won 't give you a good shot : the foreground will look dim and dingy .

通常情况下，背光不会让你获得最好的照片，因为：前景看起来会黯淡和肮脏。

By now you 've probably heard of the alleged facetime freezing and backlight bleeding issues facing ipad 2 owners .

现在，你大概也听说了ipad玩家面临的所谓facetime卡死和背光漏光的问题了吧。

Cholesteric lcds do not require a backlight and lack many of the layers of a traditional lcd , which should make them easier to build .

胆甾型液晶无需背光，没有传统lcd各式各样的层，这使其易于构造。