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Fluorescent transparent coating capable of realizing full colors, preparation method and luminous device using fluorescent transparent coating

A technology of transparent coating and light-emitting device, which is applied in the direction of lighting devices, applications, coatings, etc., can solve the problems of cumbersome coating preparation methods, difficult large-area coating, slow curing speed, etc., and achieve a wide range of substrates and environmental protection Good performance and fast drying effect

Inactive Publication Date: 2012-10-03
GUANGDONG POLY OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although several known quantum dot coating methods have their own advantages, there are still disadvantages such as cumbersome coating preparation methods, low efficiency, difficulty in large-area coating, and slow curing speed.

Method used

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  • Fluorescent transparent coating capable of realizing full colors, preparation method and luminous device using fluorescent transparent coating
  • Fluorescent transparent coating capable of realizing full colors, preparation method and luminous device using fluorescent transparent coating

Examples

Experimental program
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Embodiment 1

[0030] A full-color fluorescent clear coating consisting of quantum dots and UV-curable clear ink. Quantum dots, also known as semiconductor nanocrystals, include nano-semiconductor materials of Group II-VI or Group III-V of the periodic table of elements and their corresponding core-shell structures; specifically including CdSe, CdTe, CdS, ZnSe, ZnS, GaP, GaN , GaAs, InP, InN, InAs, InSb, PbS, PbSe and other quantum dots; or with the above materials as the core, CdSe, CdS, ZnSe, ZnS, CdO, ZnO, SiO 2 A nano-semiconductor material with a core-shell structure formed as a shell. By controlling the size and composition of quantum dots, the emission wavelength of quantum dots can be adjusted to obtain a variety of distinguishable colors. Generally, the particle diameter of quantum dots is between 1 and 10 nm. Taking (CdSe)ZnS core-shell quantum dots as an example, when the CdSe core diameter is 1.8nm, it emits blue light; when the CdSe core diameter is 7nm, it emits red light. T...

Embodiment 2

[0032]Commercial UV curable ink products without added pigments include epoxy acrylate UV curable inks, polyurethane acrylate UV curable inks, polyester acrylate UV curable inks, polyether acrylate UV curable inks, polyacrylic acid One or more of propyl ester and unsaturated polyester UV curing inks. Mix the UV-curable transparent ink resin with a mass percentage of 75% and (CdSe)ZnS core-shell quantum dots with a mass percentage of 25% and a core diameter of 7nm, add it to the material tank and stir for 120min through a disperser; add 0.2 mm zirconia beads, grind for 8 hours, the UV curable transparent ink with quantum dots has a viscosity of 100mPaS at 30°C; print the target image on the glass with the ground UV curable transparent ink with quantum dots by an inkjet printer; While printing the target image or after printing, it is irradiated with ultraviolet light to cure it. The radiation amount of ultraviolet light is 10W / cm, and the irradiation time is 300 seconds. The fo...

Embodiment 3

[0034] Mix the UV curable transparent ink with a mass percentage of 88% and CdSe quantum dots with a mass percentage of 12% and a particle size of 3.2nm, add it to the bucket and stir it for 75min through a disperser; add 0.2mm zirconia beads, Grinding for 5 hours, the viscosity of the ground UV curable transparent ink containing quantum dots is 50mPaS at 30°C; the ground UV curable transparent ink containing quantum dots is used to print the target image on the transparent resin by an inkjet printer; the printed target image At the same time or after printing, irradiate with ultraviolet light to cure it. The radiation amount of ultraviolet light is 1000W / cm, and the irradiation time is 100 seconds. The formed fluorescent transparent coating can emit green light after being excited by blue light or ultraviolet LED light source. Then the transparent resin is cut into the required size and shape, and assembled with a light source that excites fluorescence to form a light-emitting...

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Abstract

The invention discloses a fluorescent transparent coating capable of realizing full colors. The fluorescent transparent coating comprises quantum dots and ultraviolet (UV) curing transparent ink. A method for preparing the fluorescent transparent coating comprises the following steps of: adding the quantum dots and the UV curing transparent ink into a charging bucket, and stirring by using a dispersion machine for 30 to 120 minutes; adding zirconium oxide beads of which the grain diameters are 0.2 millimeter, and grinding for 3 to 8 hours; printing the ground UV curing transparent ink containing the quantum dots on a base material by using an inkjet printer to form a target image; and irradiating by using ultraviolet light while printing the target image or after the target image is printed. According to the fluorescent transparent coating, the quantum dots which can emit fluorescent light of different wavelengths and the UV curing transparent ink are combined to realize full colors, and the image is printed by using the UV curing transparent ink through the inkjet printer; and the method is simple, high in efficiency and flexible and can be used for large-area inkjet, and the coating is high in curing speed and environment-friendly.

Description

Technical field [0001] The invention relates to the application field of quantum dots, and specifically relates to a fluorescent transparent coating that can achieve full color and a preparation method thereof, as well as a light-emitting device composed of the fluorescent transparent coating. Background technique [0002] Quantum dots are also called semiconductor nanocrystals. When stimulated by light or electricity, quantum dots will emit specific fluorescent light. The color of the fluorescence is determined by the composition, size and shape of the quantum dots. This property allows quantum dots to change the color of light emitted by the excitation light source. Using quantum dots of different compositions or sizes, richly colored light can be obtained. Currently, countries around the world are studying the application of quantum dots in full color, but mainly in the display field. [0003] Samsung has developed a full-color active matrix display using quantum dot te...

Claims

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Application Information

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IPC IPC(8): C09D163/10C09D175/14C09D167/06C09D171/00C09D133/08C09D7/12C09D11/10F21K2/08C09D11/101
Inventor 张涛李阳张志坤
Owner GUANGDONG POLY OPTOELECTRONICS
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