Wire grid polarizer and liquid crystal display device using the same
First Claim
Patent Images
1. A wire grid polarizer comprising:
- a resin substrate having grid-shaped convex portions;
a dielectric layer provided to cover the grid-shaped convex portions of the resin substrate and at least part of side faces of the portions; and
metal wires provided on the dielectric layer.
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Abstract
A wire grid polarizer has mainly a resin substrate 1 having grid-shaped convex portions 1a, a dielectric layer 2 provided to cover the grid-shaped convex portions 1a of the resin substrate 1 and at least part of side faces 1b of the portions, and metal wires 3 provided on the dielectric layer. The wire grid polarizer has a microstructural concavo-convex grid structure having grid-shaped convex portions, is not limited in structure, and has both the excellent degree of polarization and excellent transmittance over a wide range in the visible region.
30 Citations
41 Claims
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1. A wire grid polarizer comprising:
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a resin substrate having grid-shaped convex portions; a dielectric layer provided to cover the grid-shaped convex portions of the resin substrate and at least part of side faces of the portions; and metal wires provided on the dielectric layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wire grid polarizer comprising:
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a resin substrate having grid-shaped convex portions; a dielectric layer provided to cover the grid-shaped convex portions of the resin substrate and at least part of side faces of the portions; and metal wires of which top portions are positioned higher than the convex portions of the dielectric layer. - View Dependent Claims (15, 16, 17)
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18. A wire grid polarizer comprising:
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a resin substrate having grid-shaped convex portions; a dielectric layer provided to cover the grid-shaped convex portions of the resin substrate and at least part of side faces of the portions; and metal wires provided on the dielectric layer, wherein as a cross-sectional shape of the convex portions of a concavo-convex grid formed by covering the grid-shaped convex portions of the resin with the dielectric, in a plane intersecting perpendicularly a longitudinal direction of the grid, a concave portion is substantially in the shape of a parabola, and wH/wL ranges from 0.3 to 0.9, the wH/wL being a ratio of a convex-portion width wH at a height two-thirds a height of a convex portion from a bottom to a convex-portion width wL at a height one-third the height of the convex portion from the bottom. - View Dependent Claims (19, 20, 21)
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22. A thin polarizer having:
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a thickness of 80 μ
m or less;a degree of polarization of 99.9% or more; a transmittance of 35% or more; and a reflectance of 30% or more. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A polarizer with a high degree of polarization, comprising:
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an absorption polarizer that absorbs a polarized component of incident light that is not passed through to generate polarized light; and a reflection polarizer which is provided on the absorption polarizer and reflects the polarized component of incident light that is not passed through to generate polarized light, wherein the degree of polarization is 99.9999% or more, a transmittance is 35% or more, and a reflectance is 30% or more. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification