Multi-colored liquid crystal display device

Details Multi-colored liquid crystal display device Multi-colored liquid crystal display device

1989-06-30

1993-03-02

Hille, Rolf

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 78, 359 93, 359 63, G02F 113

Patent

active

051914549

ABSTRACT:
A liquid crystal display device capable of displaying multiple colors in response to application of different driving voltages includes a liquid crystal cell with two polarizers and the value of the product of the optical anisotropy n of the nematic liquid crystal material and the thickness d of the liquid crystal layer is in excess of 1.1 .mu.m. A second liquid crystal cell can be included between the first cell and one of the polarizers. A driver circuit drives the liquid crystal cells by the dynamic drive method by applying a selecting voltage, a non-selecting voltage, and one or more intermediate voltages to generate the different colors.

REFERENCES:
patent: 4097128 (1978-06-01), Matsumoto et al.
patent: 4443065 (1984-04-01), Funada et al.
patent: 4664482 (1987-05-01), Kando et al.
patent: 4759612 (1988-07-01), Nakatsuka et al.
patent: 4842379 (1989-06-01), Oishi et al.
patent: 4944578 (1990-07-01), Denison

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