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Structure of the proposed PRLCD.
Details of operation of the PRLCD: (a) OFF state, the DDLC cell is homogeneously aligned, and (b) ON state, the sample is written as a TN cell. POL, DDLC, QWP, and TRM are linear polarizer, dye-doped liquid crystal, quarter-wave plate, and transflective mirror.
Simulation of reflected intensity with LC twisting angle, , and the angle made between the LC directors and the optical axis of the QWP, ; (a) solid line: , dashed line: , (b) red, green, blue (RGB) color dispersion, corresponding to the solid line in (a) with , , .
(Color) Images of (a) written NCKU (, normally white), (b) K erased, “NCU” (, normally white), (c) the region around K is rewritten as a square (, normally black). A piece of printed paper is compared with the displayed image of the photorewritable sample of PRLCD.
Variation of writing time of this PRLCD with writing-beam intensity: (a) 50, (b) 100, (c) 150, (d) 250, and (e) .
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