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Hermetically sealed glass frit composition and preparation method, sealing method based on glass frit composition

An air-tight sealing and glass frit technology, applied in the field of sealing materials, can solve the problems of increased thermal expansion coefficient, low sealing strength, cracks, etc., and achieves the effects of high sealing strength, good absorption effect and good wettability.

Active Publication Date: 2016-03-09
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, conventional sealing materials contain toxic substances such as vanadium pentoxide to act as an absorber to absorb the laser light used to seal the substrate, and when the sealing material has a low melting temperature, the thermal expansion coefficient increases, forming cracks and cracks during sealing. Collapsed, with a defect that the seal strength is not high

Method used

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  • Hermetically sealed glass frit composition and preparation method, sealing method based on glass frit composition
  • Hermetically sealed glass frit composition and preparation method, sealing method based on glass frit composition
  • Hermetically sealed glass frit composition and preparation method, sealing method based on glass frit composition

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preparation example Construction

[0016] see figure 1 , the preparation method of the glass frit composition of an embodiment, comprises the following steps:

[0017] S110, sintering the oxide powder, and water quenching with the molten oxide powder to obtain glass beads.

[0018] In this embodiment, the oxide powder includes the following components according to mole percentage: 30-60SiO 2 , 10-30P 2 o 5 , 5-20Li 2 O, 4-15ZnO, 0-15Al 2 o 3 , 10-20Co 2 o 3 , 0-3RO, wherein R is at least one of Fe, Cr, Mg, Ti.

[0019] Weigh a certain amount of SiO according to the mole percentage as above 2 ,P 2 o 5 , Li 2 O, ZnO, Al 2 o 3 、Co 2 o 3 Mix with RO to obtain oxide powder, put the oxide powder in a high-temperature furnace and sinter to obtain molten oxide powder, and pour the molten oxide powder into water for water quenching to form glass beads.

[0020] S130, pulverizing the obtained glass beads to form a glass frit composition in the form of glass particles.

[0021] In this embodiment, the av...

Embodiment 1

[0038] A glass frit composition was prepared comprising the following components in mole percent: 30SiO 2 、30P 2 o 5 、10Li 2 O, 6ZnO, 7Al 2 o 3 , 15Co 2 o 3 , 1.5TiO 2 and 0.5Fe 2 o 3 .

[0039] Weigh SiO according to the above mole percentage 2 ,P 2 o 5 , Li 2 O, ZnO, Al 2 o 3 、Co 2 o 3 、TiO 2 and Fe2 o 3 , and mixed to obtain oxide powder, placed in a high-temperature furnace for sintering to obtain molten oxide powder, and pouring the molten oxide powder into water for water quenching to obtain glass beads;

[0040] The obtained glass beads are pulverized to obtain a glass frit composition in the form of glass particles with an average particle size distribution of less than 5 microns, and particles of various particle size distributions required are selected by winnowing.

[0041] The melting point temperature of the prepared glass frit composition is 450° C., and the coefficient of thermal expansion is 87.5.

Embodiment 2

[0043] A glass frit composition was prepared comprising the following components in mole percent: 45SiO 2 , 20P 2 o 5 、5Li 2 O, 8ZnO, 2Al 2 o 3 and 20Co 2 o 3 .

[0044] Weigh SiO according to the above mole percentage 2 ,P 2 o 5 , Li 2 O, ZnO, Al 2 o 3 and Co 2 o 3 , and mixed to obtain oxide powder, placed in a high-temperature furnace for sintering to obtain molten oxide powder, and pouring the molten oxide powder into water for water quenching to obtain glass beads;

[0045] The obtained glass beads are pulverized to obtain a glass frit composition in the form of glass particles with an average particle size distribution of less than 5 microns, and particles of various particle size distributions required are selected by winnowing.

[0046] The melting point temperature of the prepared glass frit composition was 487° C., and the thermal expansion coefficient was 77.6.

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Abstract

The invention provides a frit composition for air-tight sealing, a preparation method thereof and a sealing method based on the frit composition. The frit composition for air-tight sealing comprises the following components in molar percentage: 30-60% of SiO2, 10-30% of P2O5, 5-20% of Li2O, 4-15% of ZnO, 0-15% of Al2O3, 10-20% of Co2O3 and 0-3% of RO, wherein R is at least one of Fe, Cr, Mg and Ti. The preparation method of the frit composition comprises the following steps of sintering oxide powder, and obtaining glass beads along with water quenching of the molten oxide powder; crushing the obtained glass beads to form the frit composition in glass particle morphology, wherein the oxide powder comprises the following components in molar percentage: 30-60% of SiO2, 10-30% of P2O5, 5-20% of Li2O, 4-15% of ZnO, 0-15% of Al2O3, 10-20% of Co2O3 and 0-3% of RO, wherein R is at least one of Fe, Cr, Mg and Ti. By adopting the frit composition provided by the invention, air-tight packaging with high sealing strength can be obtained, and environmental pollution can be avoided.

Description

technical field [0001] The invention relates to the technical field of sealing materials, in particular to a hermetically sealed glass frit composition, a preparation method, and a sealing method based on the glass frit composition. Background technique [0002] Hermetically sealed sealing materials, such as glass frit, are applied to the sealing of light-emitting devices as a type of intermediate material for sealing the substrate, so as to isolate the interior of the light-emitting device from the surrounding environment and prevent the light-emitting device from being affected by the surrounding environment. impact and degrade performance. [0003] Light-emitting devices, such as organic electroluminescent devices, have received increasing attention and wide applications. Among organic electroluminescent devices, organic electroluminescent displays (OLEDs), as an emerging flat-panel display, have potential advantages in terms of color contrast, viewing angle, response sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/24C03C3/062C03C3/085
Inventor 张建华李艺
Owner SHANGHAI UNIV