Quantum dot ink and quantum dot membrane and production method thereof

A quantum dot film and quantum dot technology, applied in the field of liquid crystal display, can solve the problems of affecting the light emitting efficiency and light conversion efficiency of quantum dot film, affecting the curing effect of photocurable resin, and difficult to uniformly disperse quantum dots. Thin, display pure, low shrinkage effect

Pending Publication Date: 2019-05-07
ZHUHAI FREE TRADE ZONE NEOJET APOLLOJET IMAGING MATERIALS
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing quantum dot membranes often have the following technical problems in the preparation process: 1. The compatibility between quantum dots and photocurable resin systems is poor, making it difficult to uniformly disperse quantum dots in photocurable resins; 2. During the process, the quantum dots will absorb and convert part of the ultraviolet light, which will affect the curing effect of the photocurable resin.
These two technical problems have affected the light extraction efficiency and light conversion efficiency of the quantum dot film

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Quantum dot ink and quantum dot membrane and production method thereof
  • Quantum dot ink and quantum dot membrane and production method thereof
  • Quantum dot ink and quantum dot membrane and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] S11: Prepare a transparent resin film, such as a PET film.

[0029] S12: Printing the first quantum dot ink and the second quantum dot ink on different regions of the transparent resin film by an inkjet printer with a piezoelectric nozzle (such as a printer equipped with a Ricoh GEN5 nozzle).

[0030] Wherein, the ratio of the first quantum dot ink is shown in Table 1.

[0031] Table I

[0032]

[0033]

[0034] In this embodiment, the (meth)acrylic monomer of the first quantum dot ink uses a mixed system of CTFA and LA, and the quantum dots CdS can be uniformly distributed in the mixed system. The quantum dot CdS has a particle size of 7 nm, and the quantum dot CdS can be excited by blue light to emit red light. The photoinitiator is a mixture of TPO and diphenyl-(4-phenylthio)phenylsulfonium hexafluorophosphate, and TPO will not affect the luminous efficiency of quantum dots, and will not turn yellow after curing. TPO photoinitiator can also play the role of ...

Embodiment 2

[0042] S21: Prepare a transparent resin film, such as a PET film.

[0043] S22: Print the first quantum dot ink and the second quantum dot ink on different regions of the transparent resin film by using an inkjet printer with a piezoelectric nozzle (such as a printer equipped with an Epson DX5 nozzle).

[0044] Among them, the ratio of the first quantum dot ink is shown in Table 3.

[0045] Table three

[0046]

[0047]

[0048] The particle size of InP is 8nm, and the quantum dots can be excited by blue light to emit red light.

[0049] The ratio of the second quantum dot ink is shown in Table 4.

[0050] Table four

[0051]

[0052] The particle size of InP is 4nm, and the quantum dots can be excited by blue light to emit green light.

[0053] S23: Curing the first quantum dot ink and the second quantum dot ink printed in step S22 by UV light, forming a first coating in the area of ​​the first quantum dot ink after curing, and the first coating emits red light u...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention provides quantum dot ink and quantum dot membrane and a production method thereof. The quantum dot ink comprises 2wt%-4.5wt% of quantum dots, 70wt%-90wt% of (meth)acrylic acid monomer, 5wt%-15wt% of photoinitiator, 0-10wt% of acrylate oligomer and 0.1wt%-5wt% of assistant; and the particle size of the quantum dots is 6-9 nm or 2-5 nm. The quantum dots of the quantum dot ink have goodcompatibility with a light-cured resin system, and a curing effect of light-cured resin is good. The quantum dot membrane is produced by printing the quantum dot ink on transparent resin membrane through an ink-jet printing technology and conducting curing and shaping on the transparent resin membrane, and the technology is simple.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a quantum dot ink, a quantum dot membrane and a preparation method thereof. Background technique [0002] At present, most of the display screens on the market are LCD display screens, and this kind of display screens also use LEDs as backlight sources. White light is achieved by filling yellow phosphor powder with LEDs. However, the disadvantage of LCD display screens is that the color performance is not good enough, and the color domain is relatively low. With the development of technology, the light-emitting materials of OLED panels gradually replace LCD display screens. The main advantage is that OLED display technology has the characteristics of self-luminescence and does not require a continuous light source. The OLED material is only powered on when color rendering is required, and black On the one hand, the performance is very simple, as long as it is not powered on...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/30C09D11/50
Inventor 王凤斌黄云欣
Owner ZHUHAI FREE TRADE ZONE NEOJET APOLLOJET IMAGING MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap