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AssigneeHitachi, Ltd.
InventorsShoichi Hirota, Makoto Tsumura, Iwao Takemoto, Hideki Nakagawa, Satoshi Ouchi, Taro Imahase
Estimating the term…
A liquid crystal display element comprising two transparent substrates, at least one of which is transparent, and a liquid crystal layer interposed between the two substrates. A plurality of pixels and active elements for driving the liquid crystal at the plurality of pixels are incorporated into at least one of the two substrates, and an optical axis of an incident light beam upon the liquid crystal layer is present in a plane which is substantially perpendicular to a direction of orientation of liquid crystal molecules on at least one of the two substrates, and the incident light impinges upon the liquid crystal layer in a direction which is inclined by a predetermined angle to the direction of the normal line of the substrate. With this arrangement, a desired phase modulation is obtained through slight motion of the liquid crystal molecules, thereby greatly reducing the liquid crystal drive voltage.
A liquid crystal display element in a projection type liquid crystal display unit, comprising two substrates of a reflection substrate and a transparent substrate, and a liquid crystal layer formed of liquid crystal molecules interposed between said two substrates, wherein a plurality of pixels and active elements for driving the liquid crystal molecules at the plurality of pixels, are incorporated in at least one of the two substrates, and wherein a projection light beam is incident upon and emergent from the liquid crystal layer through the transparent substrate, and the projection light beam is modulated by the liquid crystal molecules in the liquid crystal layer so that the projection light beam is led and reflected within the liquid crystal layer in directions which lie in a plane which is substantially perpendicular to a direction of orientation of the liquid crystal molecules at at least one of the two substrates, and the light beam impinges upon the liquid crystal layer in a direction which is inclined by a predetermined angle other than zero degrees to a direction of a normal line of the transparent substrate, and a direction of polarization of the incident light beam upon the liquid crystal layer is substantially perpendicular or parallel to the direction of the orientation of the liquid crystal molecules.
A liquid crystal display element in a projection type liquid crystal display unit, comprising two transparent substrates and a liquid crystal layer formed of liquid crystal molecules interposed between the two substrates, wherein a plurality of pixels and active elements for driving liquid crystal molecules in the liquid crystal layer at the plurality of pixels, are incorporated to at least one of the two transparent substrates, wherein a projection light beam is incident upon and emergent from the liquid crystal layer through at least one of the two transparent substrates, and the projection light beam is modulated by the liquid crystal molecules in the liquid crystal layer so as to be led within the liquid crystal layer in directions which lie in a plane which is substantially perpendicular to a direction of orientation of the liquid crystal molecules at at least one of the two transparent substrates, and the light beam impinges upon the liquid crystal layer in a direction which is inclined by a predetermined angle other than zero degrees to a direction of a normal line to at least one of the two transparent substrates, and a direction of polarization of the incident light beam upon the liquid crystal layer is substantially perpendicular or parallel to the direction of the orientation of the liquid crystal molecules.
Dependencies are inferred from the claim text.