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Ultraviolet light and multi-quantum dot combined high-gamut white light implementation mode

A red light quantum dot and multi-quantum technology, applied in the field of white light LED backlight, can solve the problems of difficult large-scale industrialization, difficult curing of packaging glue, low light conversion efficiency, etc., to reduce difficulty and product defect rate, improve quality, The effect of increasing the color gamut value

Active Publication Date: 2016-07-06
惠州市聚飞光学材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these two implementation methods are complex in process, low in light conversion efficiency, and high in cost, making it difficult to achieve large-scale industrialization.
For this reason, some researchers have tried to encapsulate quantum dot phosphors in LED lamp beads to obtain white light with a high color gamut. However, due to the existence of quantum dot phosphors, it is difficult to mix with the packaging glue, and it is easy to agglomerate and fail, and mixing impurities will destroy Encapsulation glue, making the encapsulation glue hard to cure and other technical problems, so it is difficult to make substantial progress in related research

Method used

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  • Ultraviolet light and multi-quantum dot combined high-gamut white light implementation mode
  • Ultraviolet light and multi-quantum dot combined high-gamut white light implementation mode
  • Ultraviolet light and multi-quantum dot combined high-gamut white light implementation mode

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Embodiment 1

[0034] This embodiment provides a high color gamut white light realization method combining ultraviolet light and multi-quantum dots, including the following steps:

[0035] a. Add 50 parts by weight of organic solvent n-hexane to 1 part by weight of BaS red light quantum dot phosphor powder with a peak emission wavelength of 600nm to obtain a red light quantum dot solution; to AgInS with a peak emission wavelength of 510nm 2 Add 50 parts by weight of an organic solvent cyclohexane to the green light quantum dot fluorescent powder to obtain a green light quantum dot solution; add 50 parts by weight of an organic solvent n-octane to 1 part by weight of NaCl blue light quantum dot fluorescent powder with a luminous peak wavelength of 430 nm to obtain Blue light quantum dot solution; the red light quantum dot fluorescent powder, green light quantum dot fluorescent powder and blue light quantum dot fluorescent powder are all commercially available fluorescent powder, the particle s...

Embodiment 2

[0043] This embodiment provides a high color gamut white light realization method combining ultraviolet light and multi-quantum dots, including the following steps:

[0044] a. To 1 part by weight of Fe whose emission peak wavelength is 660nm 2 o 3 、In 2 o 3 2000 parts by weight of organic solvent toluene are added to the InAs red light quantum dot phosphor powder to obtain a red light quantum dot solution; 1500 parts by weight of organic solvent dichloromethane is added to InN and InP green light quantum dot phosphor powder of 550nm luminescence peak wavelength in 1 weight part , to obtain a green light quantum dot solution; to 1 weight part of CdS, CdSe blue light quantum dot fluorescent powder with a luminous peak wavelength of 480nm, add 1000 parts by weight of organic solvent chloroform to obtain a blue light quantum dot solution; the red light quantum dot fluorescent powder, Both the green light quantum dot phosphor and the blue light quantum dot phosphor are commerci...

Embodiment 3

[0051] This embodiment provides a high color gamut white light realization method combining ultraviolet light and multi-quantum dots, including the following steps:

[0052] a. Add 200 parts by weight of organic solvent pyridine to 1 part by weight of CdTe, ZnS, and ZnSe red light quantum dot phosphors with a peak emission wavelength of 620nm to obtain a red light quantum dot solution; Add 500 parts by weight of organic solvent dichloromethane to the green light quantum dot phosphor powder to obtain a green light quantum dot solution; add 100 parts by weight of organic solvent n-hexane to 1 part by weight of GaN and GaS blue light quantum dot phosphor powder with a peak emission wavelength of 446nm, Obtain blue light quantum dot solution; described red light quantum dot fluorescent powder, green light quantum dot fluorescent powder and blue light quantum dot fluorescent powder are commercially available fluorescent powder, wherein, red light quantum dot fluorescent powder parti...

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Abstract

The invention discloses an ultraviolet light and multi-quantum dot combined high-gamut white light implementation mode. The mode comprises the following steps of (a) respectively adding an organic solvent to red-light quantum-dot fluorescent powder, green-light quantum-dot fluorescent powder and blue-light quantum-dot fluorescent powder; (b) processing a solution with ultrasound; (c) preparing a hybrid quantum-dot solution; (d) adding a hybrid package glue into the hybrid quantum-dot solution and uniformly stirring the mixed solution; (e) removing the organic solvent; and (f) dropwise adding a hybrid fluorescent glue into a light emitting diode (LED) support fixed with an ultraviolet chip, and baking and curing the LED support to obtain an LED lamp bead. By the white-light implementation mode, high-gamut white-light LED is obtained, and the gamut value of the LED backlight lamp bead is greatly increased and can reach over NTSC 94%; by taking the organic solvent as a connection bridge, quantum dots and the package glue are uniformly mixed; and moreover, the phenomenon that the quantum-dot fluorescent powder is failure to be agglomerated is avoided, and the quality of the high-gamut white-light LED lamp bead is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of white light LED backlights, and in particular relates to a high-color-gamut white light realization method in which ultraviolet light and multi-quantum dots are combined. Background technique [0002] Compared with the traditional CCFL backlight, LED backlight has many advantages such as high color gamut, high brightness, long life, energy saving and environmental protection, real-time color controllable, etc., especially the high color gamut LED backlight makes TV, mobile phone, The screens of tablet computers and other electronic products have brighter colors and a higher degree of color reproduction. In recent years, they have gradually replaced traditional CCFL backlights. [0003] Currently commonly used LED backlights generally use blue light chips to excite YAG yellow light phosphors. Due to the lack of red light components in the backlight, the color gamut can only reach NTSC65%-72%. In order to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48H01L33/50H01L33/56H01L33/00C09K11/08
CPCC09K11/08H01L33/48H01L33/504H01L33/56
Inventor 童文鹏高丹鹏邢其彬
Owner 惠州市聚飞光学材料有限公司
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