Liquid crystal display with a fluorescent backlight emitting polarised light
First Claim
1. An electro-optical switching element comprisingat least one light converter comprising a cholesteric liquid crystal, which comprises one or more light emitting moieties and wherein said at least one light converter is capable of converting light,wherein each light converter is capable of converting a state of polarization of the light from non-polarized light to circular polarized light and,wherein at least one light converter is capable of shifting the wavelength of the light to longer values,a liquid crystal material, which is capable of switching,one or more light polarizing devices, andoptionally an illuminator, andwherein one of said one or more light polarizing devices are positioned between said optional illuminator and said light converter and wherein said light converter is positioned between said one of said one or more light polarizing devices and said liquid crystal material.
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Accused Products
Abstract
The instant invention relates to electro-optical switching elements and displays comprising them. In particular, it relates to electro-optical switching elements comprising one or more light conversion means capable to convert light (e.g. ambient light and/or light from a backlight system), wherein each of said light conversion means o is capable to convert the state of polarization of the light from non-polarized light either to linear polarized light or to circular polarized light and, at the same time, o optionally is capable to shift the wavelength of the light to longer values and—at least one of said conversion means o is capable to shift the wavelength of the light to longer values and—a liquid crystal material, which is capable of switching,—one or more means to polarize light, and—optionally a means for illumination such as e.g. a backlight.
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Citations
19 Claims
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1. An electro-optical switching element comprising
at least one light converter comprising a cholesteric liquid crystal, which comprises one or more light emitting moieties and wherein said at least one light converter is capable of converting light, wherein each light converter is capable of converting a state of polarization of the light from non-polarized light to circular polarized light and, wherein at least one light converter is capable of shifting the wavelength of the light to longer values, a liquid crystal material, which is capable of switching, one or more light polarizing devices, and optionally an illuminator, and wherein one of said one or more light polarizing devices are positioned between said optional illuminator and said light converter and wherein said light converter is positioned between said one of said one or more light polarizing devices and said liquid crystal material.
Specification