Abstract :
Research in the field of electroluminescence is resulting in increasingly efficient light sources specifically designed for area illumination. Of particular interest at this time is the growing use of electroluminescent display devices Light sources have evolved from the various types of torches and oil lamps of earliest times to the more familiar candles, kerosene lamps, and gas jets of recent memory. The era of modern lighting began well under 100 years ago as a result of the persistent efforts of Thomas A. Edison1 to replace gas lighting by electricity “to improve the illumination to such an extent as to meet all requirements of natural, artificial and commercial conditions.”
