Technical Comparison between SED and FED

摘要

The surface-conduction electron-emitter display (SED) and the field emission display (FED) have many things in common , mainly they are both technologies that realize a thin, flat display with CRT-like qualities of fast response time and high efficiency, brightness and contrast ratio. The market direction for both technologies is the large-screen, HDTV. Both technologies rely on controlling an array of electron beams to write an image on a phosphor-coated anode. Both technologies require an evacuated glass envelope supported by multiple spacers distributed throughout the display. Both are ultimately based on field emission concepts, but major differences in the emitter structure lead to significant differences in electronic drivers and display operation. This presentation will focus on the similarities and differences between the two technologies and their effect on performance.