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Quantum-dot epoxy resin composite colloid and fluorescent screen preparation method

An epoxy resin and quantum dot technology, applied in chemical instruments and methods, luminescent materials, etc., can solve problems such as unfavorable production applications, complex structures, etc., and achieve the effects of long service life, high stability, and good optical conversion performance.

Inactive Publication Date: 2016-04-13
CHINA BEIJING BEIDA JUBANG SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these existing solutions are complex in structure, which is not conducive to production application

Method used

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  • Quantum-dot epoxy resin composite colloid and fluorescent screen preparation method
  • Quantum-dot epoxy resin composite colloid and fluorescent screen preparation method
  • Quantum-dot epoxy resin composite colloid and fluorescent screen preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Prepare quantum dot epoxy resin composite colloid according to the above components

[0069]

[0070] A mixed solvent of methyl ethyl ketone and methyl isoamyl ketone is used to assist the dissolution of the red quantum dot material and the green quantum dot material, and at the same time adjust the colloid to the required viscosity suitable for spraying.

[0071] The quantum dot fluorescent film is prepared on the substrate by spraying, and is cured by heating at 150° C. for 2 hours.

[0072] Excited by a blue light source with a wavelength of 450nm, the color coordinates of the obtained white light are (x=0.31, y=0.31), and the liquid crystal module prepared by using it as a backlight has good color expression. (low color temperature display)

Embodiment 2

[0074] Prepare quantum dot epoxy resin composite colloid according to the above components

[0075]

[0076] A mixed solvent of sec-butyl acetate and xylene is used to assist the dissolution of the red quantum dot material and the green quantum dot material, and at the same time adjust the colloid to the required viscosity suitable for screen printing film making.

[0077] The quantum dot fluorescent film was prepared on the substrate by screen printing, and was cured by heating at 120° C. for 4 hours.

[0078] Excited by a blue light source with a wavelength of 450nm, the color coordinates of the obtained white light are (x=0.24, y=0.24), and the liquid crystal module prepared by using it as a backlight has good color expression. (high color temperature display)

Embodiment 3

[0080] Prepare quantum dot epoxy resin composite colloid according to the above components

[0081]

[0082] Toluene is used as a solvent to assist the dissolution of the red quantum dot material and the green quantum dot material, and at the same time, the colloid is adjusted to the required viscosity suitable for scraping.

[0083] The quantum dot fluorescent film was prepared on the substrate by scraping, and was cured by heating at 100° C. for 4 hours.

[0084] Excited by a blue light source with a wavelength of 450nm, the color coordinates of the obtained white light are (x=0.26, y=0.26), and the liquid crystal module prepared by using it as a backlight has good color expression. (medium-high color temperature display)

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Abstract

The invention embodiment provides a quantum-dot epoxy resin composite colloid and a fluorescent screen preparation method. The quantum-dot epoxy resin composite colloid comprises a matrix continuous phase prepared from epoxy resin, and the matrix continuous phase is combined with a quantum-dot material. The quantum-dot epoxy resin composite colloid is prepared from 30-60 wt% of epoxy resin, 30-60 wt% of a curing agent, 1-5 wt% of a curing promoter, 0.02-0.2 wt% of a red quantum-dot material, 0.3-4 wt% of a green quantum-dot material, 1-20 wt% of a filling particle, 0-3 wt% of a processing auxiliary agent.

Description

technical field [0001] The invention relates to the field of high-performance display materials, in particular to a quantum dot epoxy resin composite colloid and a method for preparing a fluorescent film. Background technique [0002] Liquid crystal display technology occupies more than 90% of the display market. However, traditional liquid crystal displays have insufficient color expression and low color purity. The data shows that the display color gamut is low, and the color of ordinary liquid crystal display panels The domain value only reaches about 70% of the National Television Standards Committee (NTSC) standard. [0003] With the innovation of light emitting technology, the backlight source of liquid crystal display panel has been upgraded from the original cold cathode fluorescent tube (Cold Cathode Fluorescent Lamp, CCFL) to electroluminescent diode (Light Emitting Diode, LED). In order to provide the white backlight required for liquid crystal display, there are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/04C08G59/42C08K13/02C08K3/26C08K3/30C08K3/22C09K11/88C09K11/02
Inventor 刘娟王永红刘爱军
Owner CHINA BEIJING BEIDA JUBANG SCI & TECH CO LTD
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