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Ultra-efficient Liquid Crystal Projection Displays: Polarizer-free Displays Using Continuous Polarization Gratings.

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Figure

Figure 1.2: LC Pixel structure showing the different constituent layers. Illustration of anormally white Twisted Nematic LCD in the (a) OFF, and (b) ON states respectively.
Figure 1.4: (a). Conventional LCD modulation scheme using crossed polarizers. Polariza-tion independent modulation using (b) active switchable LCPGs and, (c) combination ofan active LC layer with PGs serving as passive elements.
Figure 1.5: Diffraction from a transmissive switchable LCPG in the (a) OFF, and (b) ONstates respectively showing just three diffracted orders and high efficiency
Figure 2.4: (a) Positive dielectric halogenated alkenyl liquid crystal molecule, (b) An ex-ample of a highly polar cyanobiphenyl, 5PP with ∆ϵ = 13.3, ∆n= 0.18.
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