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Full‐color reflective display device using holographically fabricated polymer‐dispersed liquid crystal (HPDLC)

1999; Wiley; Volume: 7; Issue: 1 Linguagem: Inglês

10.1889/1.1985265

1938-3657

M. Date, Yoshie Takeuchi, Keiji Tanaka, Kinya Kato,

Advanced Optical Imaging Technologies

Abstract— A method of controlling the color of a holographic polymer‐dispersed liquid‐crystal (HPDLC) reflective display device has been achieved. By merely controlling the optical setup during fabrication, without changing the materials or laser light source, three primary‐color devices were fabricated. Since the color of the device can be controlled continuously, a large color‐reproducible area on the chromaticity diagram can be obtained. The resulting device was adequately transparent at other wavelengths to enable multiple devices to be stacked to obtain a mixture of colors. There was no significant change in color when applying an electric field. The three devices had similar reflectances and electro‐optical characteristics. Therefore, this device has good potential for full‐color display applications.