Light filter and organic electroluminescent device employing same

The invention provides a light filter, which comprises a substrate and a plurality of scattering objects, wherein the substrate is used for selecting a required radiation band; and the plurality of scattering objects are arranged in the substrate. The light filter creatively integrates a light filtering function and a light scattering function, and is small in thickness, large in size and wide in application range. According to the organic electroluminescent device provided by the invention, the light filter is arranged on a light exit surface of a white-light organic light-emitting diode, so that a colored light can be filtered out; and the light extraction efficiency of the device can also be effectively improved. In a top-emission organic electroluminescent device, relatively uniform light in a spatial solid angle can be obtained in a light scattering manner, so that the viewing angle effect generated by the micro-cavity effect is effectively regulated and controlled; and a wide viewing angle of the device is achieved.