Importance

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Abstract

A display device includes a light source, an optical waveguide, a light-extracting portion, a liquid crystal dispersion layer and a drive circuit. The optical waveguide has two ends to guide light from one of the two ends to the other end. The light is emitted by the light source. The light-extracting portion is provided to a side face of the optical waveguide. The liquid crystal dispersion layer is included in the light-extracting portion and includes liquid crystal droplets whose mean diameter is 100 nm or less. The drive circuit applies a voltage to the light-extracting portion to generate an electric field in the liquid crystal dispersion layer so that the light transmitting through the optical waveguide is scattered to be extracted.

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First Claim