Method of manufacturing a polarizer with reduced reflecitivity and a display panel having the same

• US 9,885,906 B2
• Filed: 04/21/2015
• Issued: 02/06/2018
• Est. Priority Date: 10/22/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Nam, Jung-Gun, Lee, Dae-Young, Jang, Dae-Hwan, Jo, Gug-Rae, Cho, Hyung-Bin, Han, Kang-Soo
• Primary Examiner(s): Nguyen, Lauren
• Application Number:
  US14/692,352
• Publication Number:
  US 20160116798A1
• Time in Patent Office: 1,022 Days
• CPC Class Codes: G02B 5/3058 comprising electrically conductive elements, e.g. wire grids, conductive particles
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133548 Wire-grid polarisers

Abstract

A method of manufacturing a polarizer, the method including: forming a metal layer on a substrate; forming a hard mask on the metal layer; forming an adhesion layer on a portion of the hard mask; forming a polymer layer on the hard mask and the adhesion layer; pressing a mold on the polymer layer to form a lattice pattern in association with the polymer layer; removing the mold and a portion of the lattice pattern; and patterning the adhesion layer, the hard mask, and the metal layer using a remaining portion of the lattice pattern as a mask.

Claims

1. A display panel comprising:

a first substrate;

a second substrate facing the first substrate, the second substrate comprising a thin film transistor; and

a liquid crystal layer disposed between the first substrate and the second substrate,

wherein the first substrate comprises;

a first polarizer comprising a first metal pattern spaced apart from a second metal pattern, the first and second metal patterns being disposed in a light transmittance area of the display panel and not being disposed outside the light transmittance area;

a black matrix disposed outside the light transmittance area; and

a first insulating layer disposed directly on the first polarizer,

wherein the light transmittance area of the display panel is configured to pass a light from a backlight unit,

wherein the second substrate comprises;

a second polarizer comprising a third metal pattern spaced apart from a fourth metal pattern, the third and fourth metal patterns being disposed on the second substrate in the light transmittance area and not being disposed outside the light transmittance area; and

a reflection pattern disposed outside the light transmittance area, the reflection pattern having a plate shape overlapping the thin film transistor, and

wherein the reflection pattern and the second polarizer are disposed on a same layer.

2. The display panel of claim 1, wherein the black matrix comprises a black coloring agent and an organic material.

3. The display panel of claim 1, wherein:

a first surface of the first substrate faces the second substrate;

the first polarizer is disposed on a second surface of the first substrate, the second surface opposing the first surface of the first substrate.

4. The display panel of claim 1, wherein the first and second metal patterns comprise:

a first metal layer comprising at least one of molybdenum and titanium; and

a second metal layer disposed on the first metal layer, the second metal layer comprising at least one of aluminum (Al), gold (Au), silver (Ag), copper (Cu), chrome (Cr), iron (Fe), and nickel (Ni).

5. The display panel of claim 1, wherein:

the black matrix is disposed on the first insulating layer.

6. The display panel of claim 1, wherein the second polarizer and the reflection pattern comprise:

a first metal layer comprising at least one of aluminum (Al), gold (Au), silver (Ag), copper (Cu), chrome (Cr), iron (Fe), and nickel (Ni); and

a second metal layer comprising at least one of molybdenum and titanium.

7. The display panel of claim 1, wherein the second substrate further comprises:

a second insulation layer covering the second polarizer and the reflection pattern.