Highly efficient full-color display based on blue LED backlight and electrochromic light-valve coupled with front-emitting phosphors

• DOI: 10.1364/oe.19.016022
• Publication Date: 2011-08-05T15:58:57Z
• Authors: Jeong Rok Oh; Hoo Keun Park; Ji Hye Oh; Taejoon Kouh; Young Rag Do
• Keywords: Backlight; Prussian blue

We report a novel full-color display based on the generation of by blue light approach, so called color-by-blue display. This newly proposed light-valve combines backlight excitation source, shutter, and front-emitting phosphor pixels. Careful evaluation shows that detailed characteristics as well excellent cycling durability under low operation voltage 3 V easily satisfy requirements for current application. Also, we would like to emphasize method conversion efficiency 20%, surpassing value (≈5%) seen in typical liquid crystal displays. Although switching response reported here is slower than commercial module due solution-phase electrochromic nature shutter used, time close highly feasible, suggest.