Wide-color-gamut glass for LED display and preparation method thereof

A wide color gamut, glass technology, applied in glass manufacturing equipment, glass molding, chemical instruments and methods, etc., to achieve the effects of high output and yield, increased output, and simple preparation process

Active Publication Date: 2021-03-26
XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These glasses successfully reduce the emission bandwidth of the red and green phosphors, but due to the broad emission bandwidth of the phosphors, the color gamut is limited to ~80% of NTSC

Method used

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  • Wide-color-gamut glass for LED display and preparation method thereof
  • Wide-color-gamut glass for LED display and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: 65SiO 2 -25Na 2 O-5BaO-5ZnO-3mol%Nd 2 o 3 , doped with 0.3.wt%β-SiAlON:Eu 2+ phosphor, and 1 wt.%CaAlSiN 3 :Eu 2+ Phosphor powder;

[0018] Weigh SiO with a purity greater than 99.9% according to the stoichiometric ratio 2 、Na 2 O, BaO, ZnO, Nd 2 o 3 Place in an alumina crucible, melt at 1450°C for 30 minutes, then water quench and dry to obtain glass without phosphor powder. After pulverizing the glass and commercially available β-SiAlON:Eu with a purity greater than 99.99% 2+ Phosphor and CaAlSiN 3 :Eu 2+ Phosphor powder is evenly mixed according to the mass ratio. The mixture was pressed, then sintered in air at 600° C. for 1 h, and then cooled naturally to obtain the glass.

Embodiment 2

[0019] Example 2: 65SiO 2 -25Na 2 O-5BaO-5ZnO-4mol%Nd 2 o 3 , doped with 0.3.wt%β-SiAlON:Eu 2+ phosphor, and 2 wt.%CaAlSiN 3 :Eu 2+ Phosphor powder;

[0020] Weigh SiO with a purity greater than 99.9% according to the stoichiometric ratio 2 、Na 2 O, BaO, ZnO, Nd 2 o 3 Put it in an alumina crucible, melt it at 1300°C for 60 minutes, then water quench and dry to obtain glass without phosphor doped. After pulverizing the glass and commercially available β-SiAlON:Eu with a purity greater than 99.99% 2+ Phosphor and CaAlSiN 3 :Eu 2+ Phosphor powder is evenly mixed according to the mass ratio. The mixture was pressed, then sintered in air at 500° C. for 2 h, and then cooled naturally to obtain the glass.

Embodiment 3

[0021] Example 3: 65SiO 2 -25Na 2 O-5BaO-5ZnO-5mol%Nd 2 o 3 , doped with 0.3.wt%β-SiAlON:Eu 2+ phosphor, and 3wt.%CaAlSiN 3 :Eu 2+ Phosphor powder;

[0022] Weigh SiO with a purity greater than 99.9% according to the stoichiometric ratio 2 、Na 2 O, BaO, ZnO, Nd 2 o 3 Place it in an alumina crucible, melt it at 1400°C for 40 minutes, then water quench and dry to obtain glass without phosphor powder. After pulverizing the glass and commercially available β-SiAlON:Eu with a purity greater than 99.99% 2+ Phosphor and CaAlSiN 3 :Eu 2+Phosphor powder is evenly mixed according to the mass ratio. The mixture was pressed, then sintered in air at 550° C. for 1.5 h, and then cooled naturally to obtain the glass.

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Abstract

The invention discloses wide-color-gamut glass for LED display and a preparation method thereof, and belongs to the technical field of preparation and application of photoelectric display materials. The chemical component of the wide-color-gamut glass is 65SiO2-25Na2O-5BaO-5ZnO-xNd2O3, x is larger than or equal to 3 mol% and smaller than or equal to 5 mol%, and 0.3 wt% (beta-SiAlON: Eu < 2 + >) fluorescent powder and yCaAlSiN3: Eu < 2 + > fluorescent powder are doped, wherein y is larger than or equal to 1 wt% and smaller than or equal to 3 wt%. The wide-color-gamut glass is prepared by usingthe melt quenching method, and the Nd2O3 is doped into the silicate glass so that the emission bandwidths of the green fluorescent powder and the red fluorescent powder are effectively reduced, the color gamut is further improved, and the NTSC color gamut of the prepared glass is 87-88%; the preparation method is simple in process, stable in product performance and suitable for industrial production.

Description

technical field [0001] The invention provides a wide color gamut glass for LED display and a preparation method thereof, belonging to the technical field of preparation and application of photoelectric display materials. Background technique [0002] White light emitting diodes (wLEDs) are used as white light sources in liquid crystal display (LCD) applications because of various advantages including high efficiency, low power consumption, and low cost. wLEDs are fabricated by combining red and green phosphors with InGaN-based blue LED chips (RG-LEDs), embedding the phosphors onto the blue LEDs using silicone or organic epoxy. However, conventional RG-LEDs suffer from performance and durability issues due to the low thermal and chemical stability of silicone resins in long-term operation, resulting in decreased efficiency and reliability of wLEDs. In addition, commercial phosphors such as Y 3 Al 5 o 12 : Ce 3+ (YAG:Ce 3+ ; yellow), Lu 3 Al 5 o 12 : Ce 3+ (LuAG:Ce ...

Claims

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Application Information

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IPC IPC(8): C03C3/095C03C4/12C03B19/06C09K11/80
CPCC03C3/095C03C4/12C03B19/06C09K11/7734C09K11/0883
Inventor 张乐甄方正康健邱凡赵超陈东顺陈浩
Owner XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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