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AssigneeSony Corporation
InventorsShunichi Hashimoto, Tadaaki Isozaki, Minako Sugiura
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A superior reflex type vertically-aligned liquid crystal display device wherein the refractive index anisotropy Δn of its liquid crystal material is controlled to be more than 0.1, and the transmissivity of the liquid crystal is saturated with facility at a low voltage below 5 to 6V despite a reduction of the thickness of the vertically-aligned liquid crystal layer to less than 2 μm, hence achieving satisfactory driving at a practically low voltage while attaining another advantage of remarkable improvement in the transmissivity itself. Therefore, the display device indicates a sufficient transmissivity, an excellent low-voltage driving characteristic and a fast response. Further improvements are realizable in a display apparatus, a projection optical system and a projection display system by the use of such display device.
A reflex liquid crystal display device comprising a first substrate with a light transmissive electrode, a second substrate with a light reflective electrode, and a layer of vertically-aligned liquid crystal material interposed between said first and second substrates positioned opposite to each other in a state where said light transmissive electrode and said light reflective electrode are opposed mutually, wherein the thickness of said vertically-aligned liquid crystal layer is less than 2 μm, and the refractive index anisotropy Δn of said liquid crystal material is more than 0.1.
Dependencies are inferred from the claim text.