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Quantum dot film with blue light preventing effect

A quantum dot film and red light quantum dot technology, applied in the field of optical films, can solve the problems of poor anti-blue light stability and excessive blue light, and achieve the effects of good weather resistance and aging resistance, high color gamut and good stability.

Active Publication Date: 2018-05-01
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor anti-blue light stability of the existing quantum dot film during use, the present invention provides a quantum dot film with anti-blue light effect
The quantum dot film has good anti-blue light stability, which solves the problem of excessive blue light caused by the failure of quantum dots in the quantum dot film

Method used

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  • Quantum dot film with blue light preventing effect
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  • Quantum dot film with blue light preventing effect

Examples

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Effect test

Embodiment 1

[0045] The invention provides a quantum dot film with anti-blue light effect, which is made of 2 parts by weight of red light quantum dots CdSe, 12 parts by weight of green light quantum dots CdSe, and 100 parts by weight of polystyrene resin. The thickness of the layer is 100 μm, and the upper and lower barrier films are compounded on the upper and lower surfaces of the quantum dot layer. 2% of azo anti-blue light additives are added to the upper barrier. The upper and lower barrier films are all PVA-coated high-barrier films, and the thicknesses are respectively 20 μm.

Embodiment 2

[0047] The invention provides a quantum dot film with an anti-blue light effect, which is made of 1 weight part of red light quantum dot CdS, 5 weight parts of green light quantum dot CdSe, and 100 weight parts of polymethyl methacrylate. The thickness of the quantum dot layer is 75 μm, and upper and lower barrier films are compounded on the upper and lower surfaces of the quantum dot layer, and 1.5% of azo anti-blue light additives are added to the upper barrier, and the upper and lower barrier films are both ethylene / vinyl alcohol copolymer films ( EOVH) with a thickness of 25 μm, respectively.

Embodiment 3

[0049] The invention provides a quantum dot film with an anti-blue light effect, which is made of 8 parts by weight of red light quantum dots CdSe, 20 parts by weight of green light quantum dots CdS, and 100 parts by weight of polymethyl methacrylate. The thickness of the quantum dot layer is 150 μm, and the upper and lower barrier films are compounded on the upper and lower surfaces of the quantum dot layer, and 5% titanium dioxide is added in the upper barrier. The upper and lower barrier films are both ethylene / vinyl alcohol copolymer films (EOVH), and the thicknesses are respectively 30 μm.

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Abstract

The invention relates to an optical film, in particular to a quantum dot film with a blue light preventing effect. In order to solve the problem that an existing quantum dot film is poor in blue lightpreventing stability in the using process, the invention provides the quantum dot film with the blue light preventing effect. The quantum dot film comprises a quantum dot layer; the upper surface ofthe quantum dot layer is provided with an upper blocking layer; the lower surface of the quantum dot layer is provided with a lower blocking layer; the quantum dot layer comprises quantum dots and anadhesive agent; the upper blocking layer comprises a blue light preventing material which is selected from one or more of a blue light preventing auxiliaries or blue light preventing particles. The quantum dot film has good blue light preventing stability, and solves the problem that because quantum dots in the quantum dot film lose efficacy, blue light is too much.

Description

technical field [0001] The invention relates to an optical film, in particular to a quantum dot film with anti-blue light effect. Background technique [0002] With the development of the optoelectronic industry, display technologies represented by OLED screens and quantum dot displays are emerging. Compared with traditional display technology, OLED screen and quantum dot display have a series of advantages of high color gamut, high brightness and high efficiency. In particular, quantum dot films are widely used in large-scale displays, and their color gamut can reach more than 90%. [0003] The quantum dot film is composed of two layers of barrier films with a quantum dot layer sandwiched between them. The quantum dot layer is mainly composed of green quantum dots, red quantum dots and resin. With blue LEDs, the quantum dot film can convert part of the blue light into red and green light to form a mixed white light. However, quantum dots are prone to failure in the air, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V9/32H01L33/50B32B27/30B32B27/34B32B27/08B32B27/40B32B27/18B32B7/10F21Y115/10
CPCB32B7/10B32B27/08B32B27/18B32B27/306B32B27/308B32B27/34B32B27/40B32B2307/552B32B2307/712B32B2333/12B32B2375/00B32B2377/00B32B2457/206F21Y2115/10H01L33/502
Inventor 李刚徐良霞李培源唐海江张彦
Owner NINGBO EXCITON TECH
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