The Readability of Liquid Crystal Displays for Helicopter Cockpit Applications: Effects of Backlighting With Electroluminescence

Results are presented regarding the effects of backlighting liquid crystal displays (LCD's) by electroluminescent (EL) lamps and the effects of general ambient lighting. The interest in LCD's with EL backlighting stems from this display concept's compatibility with night vision goggles (NVG's). The results indicate that increased backlighting enhances transflective dichroic LCD readability in contrast to an earlier study utilizing a reflective LCD which concluded that backlighting has an adverse effect.