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No-lead glass powder for electrode coating and its prepn process

A lead-free glass powder and coating technology, which is applied in the field of lead-free glass powder and its preparation, can solve problems such as low image quality, and achieve the effects of simple preparation process, convenient operation, and good chemical and thermal stability

Inactive Publication Date: 2007-11-07
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in order to ensure the insulation between the transparent electrodes, an electrode-coated glass frit is required to prevent the image quality from being lowered by a small amount of current passing through the surface of the glass substrate.

Method used

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  • No-lead glass powder for electrode coating and its prepn process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Table 1 (wt%)

[0028]

[0029] According to the weight percentage of the composition in Table 1, the ingredients were mixed evenly, the glass frit was put into a quartz crucible, and heated and melted in a silicon carbide rod electric furnace at a melting temperature of 1150°C and kept for 14 minutes.

[0030] Bi in Example 1 2 o 3 The content is relatively large, which mainly plays a role in lowering the melting temperature. There is a very small amount of scum on the surface of the glass melted without adding MgO, but it basically has no effect on the essence of the glass.

[0031] The melted glass is put into a preheated mold to be formed, and quickly placed in a muffle furnace for annealing at 450°C, kept for 1 hour and then cooled with the furnace.

[0032] The annealed sample was ground into a cylindrical sample of φ5×25mm for performance analysis. The coefficient of thermal expansion (α) was measured with a WRP-1 microcompute...

Embodiment 2

[0034] According to the weight percentage of the composition in Table 1, the ingredients are mixed evenly, the glass frit is put into a quartz crucible, and heated and melted in a silicon carbide rod electric furnace at a melting temperature of 1250 ° C and kept for 12 minutes.

[0035] The melted glass is put into a preheated mold to be formed, and quickly placed in a muffle furnace for annealing at 450°C, kept for 1 hour and then cooled with the furnace.

[0036] The annealed sample was ground into a cylindrical sample with a size of φ5×25mm for performance analysis. The test results are shown in Table 1.

Embodiment 3

[0038] According to the weight percentage of the composition in Table 1, the ingredients are mixed evenly, the glass frit is put into a quartz crucible, and heated and melted in a silicon carbon rod electric furnace at a melting temperature of 1250 ° C and kept for 12 minutes.

[0039] The melted glass is put into a preheated mold to be formed, and quickly placed in a muffle furnace for annealing at 450°C, kept for 1 hour and then cooled with the furnace.

[0040] The annealed sample was ground into a cylindrical sample with a size of φ5×25mm for performance analysis. The test results are shown in Table 1.

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Abstract

The present invention relates to one kind of no-lead sealing glass powder for electrode coating and its preparation process. The no-lead sealing glass powder consists of Bi2O3 40-70 wt%, B2O3 0-30 wt%, Al2O3 0-15 wt%, ZnO 0-40 wt%, SiO2 0-15 wt%, MgO 0-20 wt%, and Li2O 0-5 wt%. Its preparation process includes the following steps: 1. compounding mixed material; 2. preheating the mixed material in an electric furnace and smelting in a quartz crucible; 3. tabletting the smelted glass liquid and grinding into powder in a ball mill; and 4. measuring thermal expansion coefficient and sealing temperature. It is used in coating electrodes in plasma display device, and may be also used in sealing glass, ceramic and metal parts.

Description

technical field [0001] The invention belongs to the field of lead-free glass powder and a preparation method thereof, in particular to a lead-free glass powder used for electrode coating and a preparation method. Background technique [0002] In recent years, thin flat color display devices have received great attention, and a transparent electrode such as tin oxide, tin-doped indium oxide, etc. is used on the glass substrate of this flat display device to prevent the image quality from being lowered. [0003] In order to achieve fine image control, the transparent electrodes are processed into thin lines to control each pixel independently. At the same time, in order to ensure the insulation between the transparent electrodes, an electrode-coated glass frit is required to prevent the image quality from deteriorating due to a small amount of current passing through the surface of the glass substrate. [0004] For the glass powder used for electrode coating, it is required t...

Claims

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Application Information

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IPC IPC(8): C03C8/24C03C12/00
CPCC03C8/00C03C3/064C03C3/066C03C3/14C03C3/145C03C12/00
Inventor 陈培李胜春
Owner DONGHUA UNIV
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