Liquid crystal device, projection apparatus, and electronic apparatus
View Patent ↗A projection display includes a light source, a liquid crystal panel encapsulating a vertical alignment mode liquid crystal between a first substrate and a second substrate which are opposite to each other, the liquid crystal panel modulating light emitted from the light source, a longer axis of a molecule of the vertical alignment mode liquid crystal tilted from the normal direction of the first substrate, a projection lens projecting light modulated by the liquid crystal panel, a first polarization plate placed on an optical path from the light source to the liquid crystal panel, a second polarization plate placed on an optical path from the liquid crystal panel to the projection lens, an optical-compensation plate placed between the liquid crystal panel and the second polarization plate, and the optical-compensation plate including a plate-like base and a retardation plate formed on a surface of the plate-like base.
1. A liquid crystal device comprising:
a first polarization plate having a first transparent axis;
a second polarization plate having a second transparent axis, a direction of the second transparent axis intersecting to a direction of the first transparent axis;
an optical-compensation plate disposed between the first polarization plate and the second polarization plate, the optical-compensation plate including a plate-like base and a retardation plate, the plate-like base being opposite to the second polarization plate and having a delay axis within a plane that is in parallel with a plate side of the plate-like base, the delay axis being in parallel with the second transparent axis, the optical-compensation plate having a first surface that has a first axis and a second axis, the first axis and the second axis being in parallel with the first surface, the first axis intersecting to the second axis, the optical-compensation plate having a third axis, the third axis intersecting to the first surface, the optical-compensation plate having a first refractive index in a direction of the first axis, the optical-compensation plate having a second refractive index in a direction of the second axis, the optical-compensation plate having a third refractive index in a direction of the third axis, the first refractive index being larger than the second refractive index, the second refractive index being larger than the third refractive index, a direction of the third axis intersecting to a direction of the first transparent axis, a direction of the third axis intersecting to a direction of the second transparent axis;
a first substrate disposed between the optical-compensation plate and the second polarization plate;
a liquid crystal disposed between the first substrate and the second polarization plate; and
a second substrate disposed between the liquid crystal and the second polarization plate.
2. An electronic apparatus including a liquid crystal device according to claim 1 .
3. The liquid crystal device according to claim 1 , the plate-like base formed by arranging a crystal having a thermal conductivity of over 40 J/s·m·° C., the plate-like base being arranged directly adjacent to the retardation plate.
4. A liquid crystal device comprising:
a first polarization plate having a first transparent axis;
a second polarization plate having a second transparent axis, a direction of the second transparent axis intersecting to a direction of the first transparent axis;
an optical-compensation plate disposed between the first polarization plate and the second polarization plate, the optical-compensation plate including a plate-like base and a retardation plate, the plate-like base formed by arranging a crystal having a thermal conductivity of over 40 J/s·m·° C., the plate-like base being arranged directly adjacent to the retardation plate, the optical-compensation plate having a first surface that has a first axis and a second axis, the first axis and the second axis being in parallel with the first surface, the first axis intersecting to the second axis, the optical-compensation plate having a third axis, the third axis intersecting to the first surface, the optical-compensation plate having a first refractive index in a direction of the first axis, the optical-compensation plate having a second refractive index in a direction of the second axis, the optical-compensation plate having a third refractive index in a direction of the third axis, the first refractive index being larger than the second refractive index, the second refractive index being larger than the third refractive index, a direction of the third axis intersecting to a direction of the first transparent axis, a direction of the third axis intersecting to a direction of the second transparent axis;
a first substrate disposed between the optical-compensation plate and the second polarization plate;
a liquid crystal disposed between the first substrate and the second polarization plate; and
a second substrate disposed between the liquid crystal and the second polarization plate.