The development of the current high contrast, sunlight legible, Thin Film Electroluminescent display technology will be reviewed and device structures and operating characteristics will be described. Drive and addressing considerations will be presented in relation to device types, power dissipation, multiplexing and viewability. An overview of the industry status will be given including device availability and problems remaining to be solved. Applications of the technology will be reviewed covering both user requirements and device capabilities. A survey of future prospects will cover improvements in efficiency, multicolor displays and various device configurations.