Open AccessAngularly positioned LED-based spatial-temporal color separation system
Author(s) -
Chi−Hung Lee
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.019109
Subject(s) - gamut , optics , collimated light , liquid crystal display , color filter array , lens (geology) , spatial filter , color gel , color rendering index , color difference , color space , materials science , light emitting diode , computer science , artificial intelligence , computer vision , physics , filter (signal processing) , laser , image (mathematics) , layer (electronics) , composite material , thin film transistor
This study proposes a two-field driving scheme for field sequential color liquid crystal displays (LCDs) without color filters. The proposed scheme is based on angularly positioned color LEDs. In each field, the angular rays of two colors are collimated by a collimation lens, redirected by a light guide, and converged by a cylindrical-lens array to map into corresponding sub-pixel positions to efficiently display color images. The three main advantages of this approach are the elimination of dye color filters, high feasibility using conventional ultra-precision machining processes, and a larger color gamut.