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Quantum dot wide color gamut polyester film, brightness enhancement film and diffusion film for backlight module

A technology of backlight modules and quantum dots, which is applied in optics, optical components, instruments, etc., can solve the problem of low color gamut

Active Publication Date: 2019-04-05
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the color gamut of the existing liquid crystal display is low, the invention provides a kind of quantum dot wide color gamut polyester film for backlight module

Method used

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  • Quantum dot wide color gamut polyester film, brightness enhancement film and diffusion film for backlight module
  • Quantum dot wide color gamut polyester film, brightness enhancement film and diffusion film for backlight module
  • Quantum dot wide color gamut polyester film, brightness enhancement film and diffusion film for backlight module

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Embodiment 1

[0097] The present invention provides a wide color gamut brightness enhancement film, the brightness enhancement film includes a substrate layer and a brightness enhancement structure layer, the substrate layer is the quantum dot wide color gamut polyester film for backlight modules provided by the present invention, wherein , the proportion of layer A is 85% of bright polyester chips, 15% of anti-adhesion masterbatch, the thickness of layer A is 10 microns; the proportion of layer B is 70% of bright polyester chips, quantum dot masterbatch 30%, the content of quantum dot powder in the quantum dot masterbatch is 10%, the particle size of the red quantum dots in the quantum dot masterbatch is 6nm, the particle size of the green quantum dots is 2nm, and the weight ratio of red and green quantum dots is 2 : 5 (red: green), the thickness of layer B is 168 microns, and the total thickness of the finished product is 188 μm, wherein the barrier layer is a polyether polyurethane barrie...

Embodiment 2

[0101] The present invention provides a wide color gamut brightness enhancement film, the brightness enhancement film includes a substrate layer and a brightness enhancement structure layer, the substrate layer is the quantum dot wide color gamut polyester film for backlight modules provided by the present invention, wherein The proportion of layer A is 85% of bright polyester chips, 15% of anti-adhesion masterbatch, and the thickness of layer A is 10 microns; the proportion of layer B is 70% of bright polyester chips, 30% of quantum dot masterbatch %, the content of quantum dot powder in the quantum dot masterbatch is 10%, the particle size of the red quantum dots in the quantum dot masterbatch is 6nm, the particle size of the green quantum dots is 3nm, and the ratio of red and green quantum dots is 2:5 (red: green), the thickness of layer B is 168 microns, and the total thickness of the finished product is 188 μm, wherein the barrier layer is a polyether polyurethane barrier ...

Embodiment 3

[0105] The present invention provides a wide color gamut brightness enhancement film, the brightness enhancement film includes a substrate layer and a brightness enhancement structure layer, the substrate layer is the quantum dot wide color gamut polyester film for backlight modules provided by the present invention, wherein The proportion of layer A is 85% of bright polyester chips, 15% of anti-adhesion masterbatch, and the thickness of layer A is 10 microns; the proportion of layer B is 70% of bright polyester chips, 30% of quantum dot masterbatch %, the content of quantum dot powder in the quantum dot masterbatch is 10%, the red quantum dot particle diameter in the quantum dot masterbatch is 5nm, the green quantum dot particle diameter is 2.5nm, and the ratio of red and green quantum dots is 2: 5 (red: green), the thickness of layer B is 168 microns, and the total thickness of the finished product is 188 μm, wherein the barrier layer is a polyether polyurethane barrier layer...

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Abstract

The invention relates to an optical film, in particular to a quantum dot wide color gamut polyester film for a backlight module. In order to solve the problem of low color gamut of existing liquid crystal displays, the invention provides a polyester film with quantum dots and wide color gamut for backlight modules. The polyester film includes a base layer, and a barrier layer is provided on both sides of the base layer; the base layer includes a quantum dot layer and an anti-adhesive layer, and the anti-adhesive layer is located on both sides of the quantum dot layer; the base layer is an ABA three-layer co-extruded structure , the A layer is an anti-adhesive layer, and the B layer is a quantum dot layer; the raw materials of the quantum dot layer include the following components: 50-90% of bright polyester chip, 10-50% of quantum dot masterbatch %; the anti-adhesive layer includes the following components: 80-90% of a bright polyester chip, and 10-20% of an anti-adhesive masterbatch; the percentages are percentages by weight. A brightening structure or a diffusion layer is prepared on the surface of the polyester film, and the obtained brightness enhancing film or diffusion film can make the backlight source have higher brightness and NTSC value.

Description

technical field [0001] The invention relates to the technical field of optical thin films, in particular to a quantum dot wide color gamut polyester film for a backlight module, a brightness enhancement film and a diffusion film. Background technique [0002] Wide color gamut displays mainly refer to those displays whose measured color gamut can reach more than 90% of NTSC. The larger the color gamut, the more colors the device can display and the better the effect. At present, the NTSC color gamut of ordinary displays ranges from 65% to 75%. [0003] In order to improve the color gamut of liquid crystal displays, quantum dot technology is gradually being applied to displays. Quantum dot display technology has no size limit and can be used on small-sized screens or TV screens over 80 inches. At present, there are three main development directions for using quantum dot technology to improve the color gamut of displays: "On-chip" method, "On-edge" method and "On-surface" met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02B5/04G02B1/04
Inventor 金亚东张强
Owner NINGBO CHANGYANG TECH
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