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US 7,605,883 B2Granted
Wire grid polarizer and liquid crystal display device using the polarizer
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsHiroshi Yamaki, Yusuke Sato, Takuji Namatame, Yasuyuki Kawazu
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Abstract
A wire grid polarizer has 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. 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.
Claims11
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 convex portions of the dielectric layer such that the top of metal wires exist at a greater distance from the resin substrate than the convex portions of the dielectric layer.
1 more element
Dependencies are inferred from the claim text.