Method of manufacturing display device

Patent metadata

Field	Value
Publication number	US-10088703-B2
Application number	US-201514877134-A
Country	US
Kind code	B2
Filing date	Oct 7, 2015
Priority date	Jan 15, 2015
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A method of manufacturing a display device comprises the steps of: forming a protective film on a first surface of a first base substrate; forming a polarizer including a plurality of wire grid patterns provided on a second surface of the first base substrate facing the first surface; removing the protective film from the first surface; and forming a pixel array layer on the first surface.

First claim

What is claimed is:

1. A method of manufacturing a display device, the method comprising the steps of:
forming a protective film on a first surface of a first base substrate;
forming a polarizer including a plurality of wire grid patterns provided on a second surface of the first base substrate facing the first surface;
removing the protective film from the first surface; and
forming a pixel array layer on the first surface.

2. The method of claim 1 , wherein the protective film is formed of a metal material.

3. The method of claim 1 , further comprising the step of forming a transparent protective film on the polarizer.

4. The method of claim 3 , wherein the transparent protective film is formed of any one of TiOx and AlOx.

5. The method of claim 1 , wherein the step of forming a polarizer comprises:
forming a metal layer on the first surface;
forming photoresist patterns on the metal layer;
providing a copolymer layer including a first polymer and a second polymer between the photoresist patterns;
heat-treating the copolymer layer so as to arrange the first and second polymers alternately;
forming a plurality of grid patterns by removing the first polymer of the first and second polymers, and the plurality of grid patterns being formed of the second polymer and spaced apart by at a predetermined distance from each other between the photoresist patterns; and
etching the metal layer by using the photoresist patterns and the grid patterns as masks so as to form the wire grid patterns.

6. The method of claim 1 , further comprising the steps of:
coupling a second base substrate with the first base substrate; and
forming a liquid crystal layer between the first and second base substrates.

7. The method of claim 6 , wherein at least one of a color filter layer, a black matrix, and a common electrode is formed on the second base substrate.

8. A method of manufacturing a display device, the method comprising the steps of:
forming a protective film on a first surface of a first base substrate;
forming a polarizer including a plurality of wire grid patterns provided on a second surface of the first base substrate facing the first surface;
patterning the protective film to form a metal wire; and
forming a pixel array layer on the metal wire.

9. The method of claim 8 , wherein the metal wire comprises gate lines and gate electrodes.

10. The method of claim 9 , wherein the protective film comprises a metal material formed of any one of molybdenum, aluminum, and an alloy thereof.

11. The method of claim 8 , further comprising the step of forming a transparent protective film on the polarizer prior to forming the metal wire.

12. The method of claim 11 , wherein the transparent protective film is formed of any one of TiOx and AlOx.

13. The method of claim 8 , wherein the step of forming the polarizer comprises:
forming a metal layer on the first surface;
forming photoresist patterns on the metal layer;
providing a copolymer layer including a first polymer and a second polymer between the photoresist patterns;
heat-treating the copolymer layer so as to arrange the first and second polymers alternately;
forming a plurality of grid patterns by removing the first polymer of the first and second polymers, and the plurality of grid patterns being formed of the second polymer and spaced apart by a predetermined distance from each other between the photoresist patterns; and
etching the metal layer by using the photoresist patterns and the grid patterns as masks so as to form the wire grid patterns.

14. The method of claim 8 , further comprising the steps of:
coupling a second base substrate with the first base substrate; and
forming a liquid crystal layer between the first and second base substrates.

15. The method of claim 14 , wherein at least one of a color filter layer, a black matrix, and a common electrode is formed on the second base substrate.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Changok
• Ahn Taeyoung
• Oh Jihoon
• Lee Sangwook
• Seo Kiseong
• Im Junmo

Classifications

• G02F1/13362 Primary

  providing polarized light, e.g. by converting a polarisation component into another one · CPC title

• G02F2001/133548

  Physics · mapped topic

• G02F1/133528 Primary

  Polarisers · CPC title

• G02F1/133548

  Wire-grid polarisers · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title