Panel with reduced glare

Patent metadata

Field	Value
Publication number	US-10908339-B2
Application number	US-201816144279-A
Country	US
Kind code	B2
Filing date	Sep 27, 2018
Priority date	Sep 19, 2014
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

A wire-grip polarizer (“WGP”), and a panel having said WGP is provided. The WGP is mounted on an absorption layer. The absorption layer is mounted on a substrate. The substrate is brightly colored. The WGP includes a plurality of gratings formed of a metallic element. Each of the gratings is spaced apart from the other so as to form a waveguide. The WGP is configured to transmit S-Polarized light and reflect P-polarized light. The A thin film layer may be disposed on each of the metallic gratings. The thin film layer is configured to generate a resonance so as to modify the reflectivity of P-polarized light so as to reduce veiling glare and maintain the brightness of the substrate.

First claim

We claim:

1. A wire-grid polarizer configured to reflect P-polarized light and absorb S-polarized light, the wire-grid polarizer comprising:
a substrate;
a plurality of gratings formed of a metallic element, each of the gratings spaced apart from each other so as to form a waveguide, the waveguide having a width less than a half wavelength of a predetermined hue; the waveguide transmitting S-polarized light and reflecting P-polarized light; and
a thin film layer disposed on each of the metallic gratings, the thin film layer formed of a resonance absorption material configured to generate a resonance in response to light so as to transmit S-polarized light and reflect P-polarized light within a predetermined spectrum.

2. The wire-grid polarizer as set forth in claim 1 , wherein the substrate is an absorption layer, the absorption layer configured to absorb the transmitted S-polarized and P-polarized light.

3. The wire-grid polarizer as set forth in claim 2 , the absorption material is of either an organic pigment or an inorganic pigment, both the organic pigment and inorganic pigment are configured to absorb a visible band of the light.

4. The wire-grid polarizer as set forth in claim 1 , wherein the metallic element is one selected from the group consisting of aluminum, chromium, copper, silver, gold, platinum, zinc, and tungsten.

5. The wire-grid polarizer as set forth in claim 1 , wherein the each of the gratings have a thickness, the thickness being less than the half wavelength of a predetermined hue.

6. The wire-grid polarizer as set forth in claim 1 , wherein the thin film layer is made of a glossy dielectric, silicide, metal, or metal alloys.

7. The wire-grid polarizer as set forth in claim 1 , wherein the thin film layer is a semiconductor.

8. The wire-grid polarizer as set forth in claim 7 , wherein the semiconductor is one selected from the group consisting of amorphous silicon, germanium, zinc selenide, and zinc sulfide.

9. The wire-grid polarizer as set forth in claim 1 , the thickness of the thin film layer is between 1 and 30 nanometers.

10. The wire-grid polarizer as set forth in claim 1 , wherein the width of each of the gratings in the plurality of gratings is between 30-100 nm.

Assignees

• Toyota Eng & Mfg North America
• Univ Michigan Regents

Inventors

• Banerjee Debasish
• Guo Lingjie Jay
• Lee Kyu-Tae

Classifications

• G02B5/3058 Primary

  comprising electrically conductive elements, e.g. wire grids, conductive particles · CPC title