A 14.4-INCH DIAGONAL HIGH-CONTRAST MULTICOLOR INFORMATION EL DISPLAY WITH 640X128-PIXELS

A 14.4-in. diagonal EL display with 640 X 128 pixels has been develope d in red/green multicolor structures by using a new phosphor layer con sisting of Zn1-xMgxS:Mn and ZnS:Mn. The display is designed for 240 Hz -frame rate, enabling the luminance to be improved by a factor of two. In addition, the contrast ratio is strongly enhanced by optimizing th e black background structure and color filters. Improved characteristi cs make it possible for the EL panel to meet the requirements for the public information display taking advantages of high-reliability, cris p image and wide-viewing angle. Furthermore, the possibility of full-c olor EL displays will be described on the basis of ''color by white'' approach.