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Patterned liquid‐crystal laser film for multi‐dimensional multi‐color emissive film technology
Author(s) -
Woltman Scott J.,
Crawford Gregory P.
Publication year - 2007
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.2770855
Subject(s) - materials science , gamut , color gel , laser linewidth , optoelectronics , lasing threshold , laser , optics , color filter array , backlight , holography , photonic crystal , reflection (computer programming) , dye laser , wavelength , liquid crystal display , thin film transistor , layer (electronics) , computer science , nanotechnology , physics , programming language
— A two‐dimensional array consisting of dye‐doped reflection‐mode holographic‐polymer‐dispersed liquid crystal (H‐PDLC) lasers with alternating pitch lengths is presented. These post structures each reflect at a narrow bandwidth of light. The addition of laser dye to the H‐PDLC system allows for the generation of laser emission at the edge of the reflection band, or photonic band gap. In patterning these H‐PDLC post structures, a narrow‐linewidth patterned emissive color film is realized. The potential of such films and their implication in the display industry is discussed. In creating a three‐color array, an active emissive color film could replace the backlight and color filter components within the display. Such a patterned system would possess a wide color gamut, through spatial color synthesis, formed by narrow‐linewidth lasing structures with well‐defined wavelengths of emission.