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Dielectric layer lead-less glasses material for plasma display screen

A plasma and lead-free glass technology, applied in the field of glass frit, to achieve excellent chemical stability, high withstand voltage strength, and strong competitiveness

Inactive Publication Date: 2009-03-04
陈培
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the deficiency of existing PDP display screen dielectric layer glass frit, provide a kind of plasma display screen dielectric layer lead-free glass frit, in order to satisfy market demand for lead-free PDP with lead-free glass powder needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Raw material composition is by weight percentage:

[0047] Bi 2 o 3 40%

[0048] B 2 o 3 30%

[0049] BaO 15%

[0050] Al 2 o 3 3%

[0051] ZnO 5%

[0052] MgO 5%

[0053] La 2 o 3 2%

[0054] (2) Preparation method:

[0055] ① Weigh each raw material according to the weight percentage and mix them thoroughly to make a mixture;

[0056] ② Put the quartz crucible into an electric furnace with a temperature of 1300°C and preheat it for 10 minutes, in which the platinum crucible is placed inside the quartz crucible;

[0057] ③Put the mixture into a platinum crucible, melt it at a melting temperature of 1300°C, and keep it warm for 1.5 hours;

[0058] ④Crush the melted glass hydraulic sheet or pour it into cooling water;

[0059] ⑤Ball milling, sieving, packaging.

[0060] (3) Product performance:

[0061] The coefficient of expansion is 80.1×10 -7 / °C, warpage > 0.1mm, insulation resistance > 10 13 Ω, the breakdown voltage...

Embodiment 2

[0063] (1) Raw material composition is by weight percentage:

[0064] Bi 2 o 3 42%

[0065] B 2 o 3 25%

[0066] BaO 16%

[0067] Al 2 o 3 5%

[0068] ZnO 6%

[0069] MgO 3.5%

[0070] La 2 o 3 2.5%

[0071] (2) Preparation method:

[0072] The preparation method is the same as in Example 1.

[0073] (3) Product performance:

[0074] The coefficient of expansion is 84.2×10 -7 / °C, warpage > 0.1mm, insulation resistance > 10 13 Ω, the breakdown voltage is >2000V, the dielectric constant is 11-13, the glass softening point is 550°C, and the average particle size is 3.5μm.

Embodiment 3

[0076] (1) Raw material composition is by weight percentage:

[0077] Bi 2 o 3 50%, B 2 o 3 20%, BaO 15%, Al 2 o 3 3%, ZnO 5%, MgO 5%, La 2 o 3 2%.

[0078] Bi 2 o 3 50%

[0079] B 2 o 3 20%

[0080] BaO 15%

[0081] Al 2 o 3 3%

[0082] ZnO 5%

[0083] MgO 5%

[0084] La 2 o 3 2%

[0085] (2) Preparation method:

[0086] The preparation method is the same as in Example 1.

[0087] (3) Product performance:

[0088] The coefficient of expansion is 87×10 -7 / °C, warpage > 0.1mm, insulation resistance > 10 13 Ω, the breakdown voltage is >2000V, the dielectric constant is 11-13, the glass softening point is 540°C, and the average particle size is 3.4μm.

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Abstract

The invention discloses a lead-free glass frit for the dielectric layer of a plasma display, and the glass frit comprises the following raw materials according to the weight percentage: 30%-50% of Bi2O3, 5%-40% of B2O3, 5%-30% of BaO, 0.1%-10% of Al2O3, 0.1%-10% of ZnO, 0.1%-10% of MgO and0.1%-5% of La2O3. The invention has the advantages that the glass frit belongs to environment-friendly materials; various performances are excellent; the cost performance is high; the glass frit has suitably and easily adjusted thermal expansion coefficient and proper sintering temperature, and also has good chemical stability and high dielectric strength; the competitive power is very strong in lead-free performance and cost performance; and the glass frit has wide market development prospect.

Description

【Technical field】 [0001] The invention relates to the field of glass frit, in particular to a lead-free glass frit for a dielectric layer of a plasma display screen. 【Background technique】 [0002] Since the appearance of the plasma display screen (PDP) in the 1960s, due to its wide application prospects, it has attracted great attention from governments and business groups around the world, and has become a new economic growth point in the 21st century, attracting and driving a large number of research units. and enterprise groups are engaged in the research and development of equipment, technology, processes and materials. A variety of lead-containing low-melting-point glass powders for PDP have appeared in the international market. With the improvement of environmental protection awareness, its development direction is lead-free, environmentally friendly, low-cost, high withstand voltage strength, and complete matching of expansion coefficients. PDP display has the advan...

Claims

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Application Information

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IPC IPC(8): C03C8/24C03C3/15
Inventor 陈培李胜春
Owner 陈培
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