Applications and fabrication techniques for large scale wire grid polarizers
First Claim
1. A direct view display apparatus, comprisinga source of backlight;
- a liquid crystal array;
a wire grid polarizer disposed between the source of backlight and the liquid crystal array, wherein the wire grid polarizer includes a plurality of spaced-apart metal lines on a polymer substrate, wherein the plurality of spaced-apart metal lines is characterized by a periodicity that is less than λ
/3, where λ
is a wavelength for visible light; and
a second polarizer, wherein the liquid crystal array is disposed between the wire grid polarizer and the second polarizer, wherein the second polarizer is configured to transmit light transmitted by the wire grid polarizer.
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Accused Products
Abstract
A wire grid polarizer may be fabricated by forming plurality of substantially-straight metallic lines of predetermined periodicity Λ on a thin film substrate A plurality of substantially straight nanometer-scale periodic surface relief structures is created on a surface of the substrate. The periodic surface relief structures cover a region greater than about 4 centimeters in length and greater than about 4 centimeters in width, wherein the periodicity Λ is between about 10 nanometers and about 500 nanometers. One or more layers of material are formed on the periodic relief structures. The one or more layers include one or more conductor materials that form the plurality of substantially straight metallic lines over a region of the substrate greater than about 4 centimeters in length and greater than about 4 centimeters in width.
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Citations
16 Claims
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1. A direct view display apparatus, comprising
a source of backlight; -
a liquid crystal array; a wire grid polarizer disposed between the source of backlight and the liquid crystal array, wherein the wire grid polarizer includes a plurality of spaced-apart metal lines on a polymer substrate, wherein the plurality of spaced-apart metal lines is characterized by a periodicity that is less than λ
/3, where λ
is a wavelength for visible light; anda second polarizer, wherein the liquid crystal array is disposed between the wire grid polarizer and the second polarizer, wherein the second polarizer is configured to transmit light transmitted by the wire grid polarizer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A direct view display apparatus, comprising:
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a source of backlight; a liquid crystal array; a wire grid polarizer disposed between the source of backlight and the liquid crystal array, wherein the wire grid polarizer includes a plurality of spaced-apart metal lines on a polymer substrate, wherein the plurality of spaced-apart metal lines is characterized by a periodicity that is less than λ
/3, where λ
is a wavelength for visible light, wherein no other polarizer is disposed between the wire grid polarizer and the liquid crystal array; anda second polarizer, wherein the liquid crystal array is disposed between the wire grid polarizer and the second polarizer, wherein the second polarizer is configured to transmit light transmitted by the wire grid polarizer.
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Specification