title: Highly efficient full-color display based on blue LED backlight and electrochromic light-valve coupled with front-emitting phosphors.
abstract: We report a novel full-color display based on the generation of full-color by blue light approach, so called color-by-blue display. This newly proposed color-by-blue light-valve display combines a blue backlight excitation source, a blue light-valve shutter, and front-emitting phosphor pixels. Careful evaluation shows that the detailed display characteristics as well as excellent cycling durability under a low operation voltage of 3 V easily satisfy the requirements for the current display application. Also, we would like to emphasize that the proposed method shows a conversion efficiency of 20%, surpassing the value (≈5%) seen in the typical liquid crystal displays. Although the switching response reported here is slower than in a commercial display module due to the solution-phase electrochromic nature of the shutter used, a response time close to that of a liquid crystal display is highly feasible, as we suggest.
authors.affiliation: Department of Chemistry, Kookmin University, Seoul 136-702, Korea.
authors.forename: Jeong Rok
authors.initials: JR
authors.lastname: Oh
authors.forename: Hoo Keun
authors.initials: HK
authors.lastname: Park
authors.forename: Ji Hye
authors.initials: JH
authors.lastname: Oh
authors.forename: Taejoon
authors.initials: T
authors.lastname: Kouh
authors.forename: Young Rag
authors.initials: YR
authors.lastname: Do