Anti-reflective film, display panel and display device having the same, and fabricating method thereof

Patent metadata

Field	Value
Publication number	US-10989842-B2
Application number	US-201815961100-A
Country	US
Kind code	B2
Filing date	Apr 24, 2018
Priority date	Jun 5, 2015
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

The present application discloses a method of fabricating an anti-reflective film, comprising forming a zinc oxynitride layer on a substrate; annealing the zinc oxynitride layer; and etching the surface of the zinc oxynitride layer with an etching solution to form a micro lenses layer comprising a plurality of micro lenses on surface.

First claim

What is claimed is:

1. A light emitting display panel, comprising:
a counter substrate;
an array substrate opposite to the counter substrate; and
an anti-reflective film;
wherein the array substrate comprises thin film transistors, a light emitting layer, and a plurality of metal lines;
the anti-reflective film is on a first side of a base substrate of the array substrate facing the counter substrate;
the base substrate has a second side facing away from the counter substrate, the second side is a light emitting side of the display panel;
the anti-reflective film comprises a micro lenses layer comprising a plurality of micro lenses, each of the plurality of micro lenses comprises a zinc oxynitride grain; and
each of the plurality of micro lenses has a diameter in a range of about 1 nm to about 10 μm.

2. The display panel of claim 1 , wherein each of the plurality of micro lenses has a diameter in a range of about 20 nm to about 500 nm.

3. The display panel of claim 1 , wherein the zinc oxynitride grain has a sphere or hemisphere shape.

4. The display panel of claim 1 , wherein the anti-reflective film further comprises a transparent insulating layer on a side of the micro lenses layer away from the base substrate, the transparent insulating layer has a refractive index larger than that of the micro lenses layer.

5. The display panel of claim 4 , wherein the transparent insulating layer is made of a material comprising silicon nitride.

6. The display panel of claim 1 , wherein each of the plurality of micro lenses has a diameter in a range of about 20 nm to about 5 μm.

7. The display panel of claim 1 , wherein the plurality of micro lenses are formed as a non-uniform two-dimensional array.

8. The display panel of claim 1 , wherein the plurality of micro lenses are formed to be non-uniformly spaced and have non-uniform size distribution.

9. The display panel of claim 1 , wherein the display panel is an organic light emitting display panel.

10. The display panel of claim 1 , wherein the anti-reflective film is between the base substrate and the light emitting layer or the plurality of metal lines or the thin film transistors.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wang Dongfang
• Wang Meili
• Zhang Li

Classifications

• H10K59/8791

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

• H10K59/879

  comprising refractive means, e.g. lenses · CPC title

• H10F77/484

  Refractive light-concentrating means, e.g. lenses · CPC title

• C09K2323/00

  Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition · CPC title

• Y02E10/52

  PV systems with concentrators · CPC title