Abstract: The overall design of airborne liquid crystal displays with large size，the special ratio of length and width is discussed in this paper．In order to meet the requirements of multi-purpose LCD such as modernization，large size，wide viewing angle and double screens，including touch control，required by the indicators of product technology agreement，in combination with the mature ＆ stable rugged process and integrated circuit design ideas ＆ methods of airborne LCD，the design of selection of basic liquid crystal display module ( the original screen)，the redesign of LED backlight and the light，high-strength design and thermal design for shell structure are analyzed． Especially，in the electromagnetic compatibility，the shell material and treatment of surface protective glass shield are pre-analyzed in this paper，with three-dimensional design analysis software and analysis software as EMS，which improves the design efficiency and reduces manufacturing cost．The environmental adaptability tests such as anti-vibration，anti-shock，width-range temperature and electromagnetic compatibility show that some key points of rugged technology for the airborne LCD meet the technical requirements．