Window module and display device including the same

Patent metadata

Field	Value
Publication number	US-12487377-B2
Application number	US-202217944368-A
Country	US
Kind code	B2
Filing date	Sep 14, 2022
Priority date	Feb 3, 2022
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A window module includes: a window; a first anti-reflection layer disposed on the window; and a second anti-reflection layer disposed on the first anti-reflection layer, including magnesium fluoride and having a refractive index smaller than a refractive index of the first anti-reflection layer.

First claim

What is claimed is:

1 . A window module comprising:
a window; a first anti-reflection layer disposed on the window; and a second anti-reflection layer disposed on the first anti-reflection layer, including magnesium fluoride (MgF 2 ), and having a refractive index of about 1.3 to about 1.5 and smaller than a refractive index of the first anti-reflection layer and a thickness of about 20 nm to about 70 nm, wherein the first anti-reflection layer includes:
a first inorganic layer having a first refractive index of about 1.6 to about 1.8 and a first thickness of about 60 nanometers (nm) to about 100 nm;
a second inorganic layer directly disposed on the first inorganic layer, having a second refractive index of about 1.7 to about 2.0 and greater than the first refractive index, and having a second thickness of about 100 nm to about 130 nm; and
a third inorganic layer directly disposed on the second inorganic layer, having a third refractive index of about 1.5 to about 1.6 and smaller than each of the first refractive index and the second refractive index, and having a third thickness about 15 nm to about 25 nm,
wherein the second anti-reflection layer is directly disposed on the third inorganic layer.

2 . The window module of claim 1 , wherein the first inorganic layer includes silicon oxynitride (SiON).

3 . The window module of claim 1 , wherein the second inorganic layer includes silicon nitride (SiN x ).

4 . The window module of claim 1 , wherein the second inorganic layer includes silicon oxynitride (SiON).

5 . The window module of claim 1 , wherein the third inorganic layer includes silicon oxide (SiO x ).

6 . The window module of claim 1 , further comprising:
an intermediate layer disposed on the second anti-reflection layer; and an anti-fingerprint layer coated on the intermediate layer.

7 . The window module of claim 6 , wherein the intermediate layer includes silicon oxide (SiO x ).

8 . The window module of claim 6 , wherein the intermediate layer includes Si 9 Al 2 O 10 .

9 . A display device comprising:
a display panel, which displays an image; and a window module disposed on the display panel, wherein the window module comprises:
a window;
a first anti-reflection layer disposed on the window; and
a second anti-reflection layer disposed on the first anti-reflection layer, including magnesium fluoride (MgF 2 ), and having a refractive index of about 1.3 to about 1.5 and smaller than a refractive index of the first anti-reflection layer and a thickness of about 20 nm to about 70 nm,
wherein the first anti-reflection layer includes:
a first inorganic layer having a first refractive index of about 1.6 to about 1.8 and a first thickness of about 60 nanometers (nm) to about 100 nm;
a second inorganic layer directly disposed on the first inorganic layer, having a second refractive index of about 1.7 to about 2.0 and greater than the first refractive index, and having a second thickness of about 100 nm to about 130 nm; and
a third inorganic layer directly disposed on the second inorganic layer, having a third refractive index of about 1.5 to about 1.6 and smaller than each of the first refractive index and the second refractive index, and having a third thickness about 15 nm to about 25 nm,
wherein the second anti-reflection layer is directly disposed on the third inorganic layer.

10 . The display device of claim 9 , wherein the display panel includes:
a transistor disposed on a substrate; and an emission layer disposed on the transistor.

Assignees

• Samsung Display Co Ltd

Inventors

• Yang Gihoon
• Kim Taemin
• Seo Bongsung
• Shin Donggeun
• Lee Seulgee
• Lim Ho

Classifications

• H10K50/86

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• C01B21/0823

  Silicon oxynitrides · CPC title

• G02B27/0006

  with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation (G02B1/18 takes precedence; cleaning in general B08B) · CPC title

• C01B33/26

  Aluminium-containing silicates {, i.e. silico-aluminates} · CPC title

• C01B33/113

  Silicon oxides; Hydrates thereof {(preparing monoxide by reduction of siliceous material C01B33/182)} · CPC title