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2-D/3-D Switchable Display by Fresnel-Type LC Lens

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4 Author(s)
Lu, Jian-Gang ; Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China ; Xiong-Fei Sun ; Yue Song ; Shieh, Han-Ping D.

We demonstrate a multi-electrode Fresnel-type 2-D/3-D switchable display with electrically controlled birefringence mode liquid crystal (LC) lenses. By applying a discontinuous nonuniform electric field, the display with this structure can form a Fresnel-type refractive-index distribution to generate 3-D images. Compared to a normal LC lens, the Fresnel-type LC lens can achieve faster switching speed for dynamic applications. It can also replace the high sag solid lens for 3-D applications with relatively small cell gap. Furthermore, a Fresnel lens with suitable refractive-index profile is proposed to reduce the crosstalk in the 3-D displays.

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Display Technology, Journal of  (Volume:7 ,  Issue: 4 )