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Glass composition for high reliability ceramic phosphor panel and ceramic phosphor panel using same

A technology of composition and phosphorescent plate, applied in the direction of electroluminescent light source, light source, laser, etc.

Active Publication Date: 2019-06-04
LG INNOTEK CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the phosphor plate is used for a long time, depending on the nature of the material, whitening in which the surface of the phosphor plate becomes hazy may occur due to the reaction of moisture with the components of the glass (see figure 1 )

Method used

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  • Glass composition for high reliability ceramic phosphor panel and ceramic phosphor panel using same
  • Glass composition for high reliability ceramic phosphor panel and ceramic phosphor panel using same
  • Glass composition for high reliability ceramic phosphor panel and ceramic phosphor panel using same

Examples

Experimental program
Comparison scheme
Effect test

manufacture Embodiment 1 to 4

[0038] According to the composition conditions shown in Table 1, materials of oxide and carbonate compounds were weighed, after which these materials were put into a ball mill and then mixed for 48 hours. The mixed powders were put into a platinum crucible and melted at a temperature of 1300° C. for 30 minutes, after which the melted material was injected into a twin-roll machine and quenched, thereby obtaining cullet. The cullet was again put into the ball mill and pulverized until the cullet had a particle diameter of less than 10 μm, thereby obtaining a glass frit.

Embodiment 1 to 4

[0041] 7wt% of LuAG phosphor ranging from 530nm to 560nm and 2wt% nitride phosphor ranging from 630nm to 690nm were added to each of the frits manufactured in Manufacturing Examples 1 to 4 and thoroughly mixed. The obtained mixture was put into a SUS mold (having a molded material thickness of 1000 μm) and subjected to uniaxial compression at 5 tons for 5 minutes, whereby a compressed molded material was obtained. The compressed molding material was subjected to firing at 630° C. for 30 minutes in a firing furnace, and then subjected to mirror-like surface treatment to have a surface roughness of 0.2 μm, thereby obtaining each phosphor plate.

[0042] Table 1 shows the results of measurement of light transmittance of each phosphor plate.

[0043] [Table 1]

[0044]

[0045] ※Composition unit: wt%

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Abstract

The present invention provides a glass composition for a high-reliability ceramic phosphor plate and a ceramic phosphor plate using the same, the glass composition comprising: 75wt% to 85wt% of an oxide mixture composed of SiO2, B2O3 and ZnO 10 wt% to 15 wt% of at least one alkali metal-containing carbonate compound; and 1 wt% to 5 wt% of Al2O3, wherein the content of B2O3 is less than 25 wt%.

Description

technical field [0001] Embodiments of the present invention relate to a glass composition for a ceramic phosphor panel and a ceramic phosphor panel manufactured by using the glass composition. Background technique [0002] White LEDs (Light Emitting Diodes) have drawn attention as light sources for white lighting devices with high efficiency and high reliability, and have been used as small-sized light sources with small power consumption. Although there are many methods of realizing white LEDs, the most common method is the method of molding a blue LED element with a matrix made of resin with a yellow phosphor. However, since blue light has high energy, it may easily cause deterioration of the resin. Therefore, since the white LED having such a structure causes discoloration of the resin when used for a long time, the color of light emitted from the white LED changes. Furthermore, since resin is used for molding, heat cannot be easily dissipated from the element, so that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/066C03C3/14H01L33/50
CPCC03C14/006C03C2214/16C09K11/0883H01L33/501H01L33/505C03C3/066C09K11/02C09K11/7706H05B33/00H01S5/183H05B33/14
Inventor 朴镇庆金成勋元邾瓀李仁宰朴俊偈李志薰赵仁熙李惠诚
Owner LG INNOTEK CO LTD
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