Wire grid polarizer and method of fabricating the same

Patent metadata

Field	Value
Publication number	US-2016266294-A1
Application number	US-201514838358-A
Country	US
Kind code	A1
Filing date	Aug 27, 2015
Priority date	Mar 9, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

A wire grid polarizer includes a substrate, a plurality of conductive wire patterns which protrudes from a surface of the substrate and each extends in a direction to be substantially parallel to each other, a flaw which is provided in at least one of the conductive wire patterns and protrudes in a direction different from the direction in which the conductive wire patterns extend, and a blocking portion which blocks the flaw.

First claim

What is claimed is:

1 . A wire grid polarizer comprising:
a substrate; a plurality of conductive wire patterns which protrudes from a surface of the substrate and each extends in a direction to be substantially parallel to each other; a flaw which is provided in at least one of the plurality of conductive wire patterns and protrudes in a direction different from the direction in which the plurality of conductive wire patterns extend; and a blocking portion which blocks the flaw.

2 . The wire grid polarizer of claim 1 , wherein the blocking portion is integrally provided with a conductive wire pattern of the plurality of conductive wire patterns having the flaw.

3 . The wire grid polarizer of claim 2 , wherein the blocking portion is wider than the conductive wire pattern having the flaw.

4 . The wire grid polarizer of claim 2 , wherein distances between the blocking portion and conductive wire patterns adjacent to both sides of the conductive wire pattern including the blocking portion are equal to or smaller than a distance between conductive wire patterns without blocking portions.

5 . The wire grid polarizer of claim 2 , wherein the blocking portion includes the same material as the conductive wire pattern having the flaw.

6 . The wire grid polarizer of claim 1 , wherein the blocking portion is located on a conductive wire pattern of the plurality of conductive wire patterns having the flaw.

7 . The wire grid polarizer of claim 6 , wherein the blocking portion is located on the conductive wire pattern having the flaw and a conductive wire pattern adjacent to the conductive wire pattern.

8 . The wire grid polarizer of claim 6 , wherein the blocking portion blocks light in a visible wavelength range.

9 . The wire grid polarizer of claim 8 , wherein the blocking portion includes a negative photosensitive resin composition.

10 . The wire grid polarizer of claim 1 , further comprising a reflective layer located on the substrate between the conductive wire patterns.

11 . A method of fabricating a wire grid polarizer, the method comprising:
forming a pattern layer on a substrate; forming conductive wire patterns by patterning the pattern layer; and melting a flaw provided in at least one of the conductive wire patterns.

12 . The method of claim 11 , wherein the melting of the flaw is performed by irradiating a laser beam to the flaw.

13 . The method of claim 12 , wherein the laser beam is irradiated toward the conductive wire patterns from a surface of the substrate.

14 . The method of claim 11 , further comprising detecting the flaw before the melting of the flaw.

15 . A method of fabricating a wire grid polarizer, the method comprising:
forming a pattern layer on a surface of a substrate; forming conductive wire patterns by patterning the pattern layer; coating a photosensitive layer, which includes a photosensitive resin composition, on the conductive wire patterns; forming a blocking portion by exposing the photosensitive layer to light; and removing the photosensitive layer excluding the blocking portion.

16 . The method of claim 15 , wherein the photosensitive resin composition comprises a negative photosensitive resin composition.

17 . The method of claim 15 , wherein the blocking portion blocks light in a visible wavelength range.

18 . The method of claim 15 , wherein the forming the blocking portion is performed by irradiating light toward the photosensitive layer from the other surface of the substrate.

19 . The method of claim 18 , wherein the conductive wire patterns are arranged in a direction to be substantially parallel to each other, and the light is light of a first polarization parallel to the direction in which the conductive wire patterns are arranged.

20 . The method of claim 19 , wherein the forming the blocking portion comprises transmitting the light of the first polarization through the conductive wire patterns and letting a portion of the photosensitive layer, which is exposed to the transmitted light, be cured.

Assignees

• Samsung Display Co Ltd

Inventors

• Yoon Dae Ho
• Xie Lei
• Park Seung Won
• Lee Moon Gyu

Classifications

• G02B5/3058 Primary

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