场发射显示器（英文缩写：FED）是一种使用场发射阴极来轰击荧光粉涂层充当发光媒介的平面显示器。

场发射显示器与阴极射线管非常相似，但它却只有几毫米厚。取代了单电子枪，场发射显示器使用了大规模的金属针尖或者纳米碳管阵列(是目前已知最高效的电子发射器)

与发光二极管类似，场发射显示器节能并能够提供一种比现存发光二极管或等离子电视技术消耗更少能量的平板显示技术特性。因为总的组件更少，它们的制作也更为廉价。然而目前为止，虽然已经有小型的演示品被展示出来，在美国还没有商品化产品。

2007年一个商业化了的类似科技为SED (表面传导电子发射显示器)，场发射显示器技术的简易版衍生型。

A field emission display (FED) is a flat panel display technology that uses large-area field electron emission sources to provide electrons that strike colored phosphor to produce a color image. In a general sense, an FED consists of a matrix of cathode ray tubes, each tube producing a single sub-pixel, grouped in threes to form red-green-blue (RGB) pixels. FEDs combine the advantages of CRTs, namely their high contrast levels and very fast response times, with the packaging advantages of LCD and other flat panel technologies. They also offer the possibility of requiring less power, about half that of an LCD system.