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23.3: A Novel Photoaddressable Electronic Paper Utilizing Cholesteric LC Microcapsules and Organic Photoconductor
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2001
Year
Optical MaterialsEngineeringOrganic ElectronicsResponsive PolymersOptoelectronic DevicesChemistrySpatial Light ModulatorPhotoelectric SensorElectronic DevicesOrganic PhotoconductorOptical PropertiesPhotopolymer NetworkPolymer ChemistryMaterials SciencePhotochemistryPhotonic MaterialsOrganic Photoconductive LayerOptoelectronicsElectronic MaterialsFlexible ElectronicsPolymer ScienceApplied PhysicsCholesteric Liquid CrystalFunctional Materials
Abstract A novel photoaddressable electronic paper has been developed. It has a spatial light modulator (SLM) structure that consists of microencapsulated cholesteric liquid crystal and an organic photoconductive layer between flexible plastic thin films. An A6‐ size prototype E‐Paper sheet exhibits greater than 20% reflectivity, a 4:1 contrast ratio and a wide viewing angle. Images transferred by the projection of a 2D image with a 200 ms electrical pulse exhibit nonvolatility without power and excellent stability against deformation of the sheet.