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Paste containing inorganic powder, and its preparing method and method for manufacturing structural unit for plasma display panel

A technology of inorganic powder and manufacturing method, which is applied in the manufacture of discharge tubes/lamps, cold cathodes, and electrode systems, and can solve problems such as failure to operate, increase in device weight, and increase the process of readjusting viscosity

Inactive Publication Date: 2008-12-10
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the three-roll rolling machine is an open system and intermittent, so there are various problems in terms of quality, manufacturing cost, and operating environment.
First, there is the problem of deterioration of the operating environment caused by solvent evaporation from the paste
Second, due to the change of viscosity, it is necessary to increase the process of adjusting the viscosity again
The third is the problem of foreign matter mixed in from the surrounding working environment
Fourth, for continuous processing, it is difficult to connect with the front and rear processes of three-roll rolling
Fifth, in order to increase the processing capacity, the diameter of the roller must be increased and the length of the roller must be lengthened. Therefore, the weight of the device increases, and the gap between the rollers becomes uneven, resulting in poor dispersion of the paste.
However, when used to disperse PDP paste, there is a problem that the internal pressure of the container rises and the operation cannot be performed.

Method used

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  • Paste containing inorganic powder, and its preparing method and method for manufacturing structural unit for plasma display panel
  • Paste containing inorganic powder, and its preparing method and method for manufacturing structural unit for plasma display panel
  • Paste containing inorganic powder, and its preparing method and method for manufacturing structural unit for plasma display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3、 comparative example 4 and 5

[0111] Preliminary dispersion was performed with a planetary mixer (Inoue Seisakusho) after measuring a predetermined amount of each paste. The conditions at this time were dispersion at 30 rpm for 60 minutes. After the preliminary dispersion was completed, the upper tank of the mixer was placed on the lower tank, and a 18mm diameter tube made of Teflon (trademark) was connected to a disperser equipped with a roller in a cylindrical container. Apply a pressure of 0.2 MPa to the kettle of the mixer, and press out the paste in the kettle of the mixer into the cylindrical container of the disperser. The operating condition of the disperser was 300 rpm. Next, the dispersed paste was filtered. Filtration was performed with a 293 mmφ disc filter (filter pressure: 0.2 MPa, filter: 500 mesh).

[0112] The treatment amount of each paste is 20kg, and the time required for the dispersion treatment of 20kg, the degree of dispersion after the dispersion treatment, the viscosity, and the...

Embodiment 6

[0121] Preliminary dispersion was performed with a planetary mixer (manufactured by Inoue Seisakusho) after measuring predetermined amounts of each paste. The conditions at this time were 30 rpm and 60 minutes. After the preparatory dispersion is completed, the lower tank of the mixer is installed, and the discharge pressure of the pump is 0.05MPa via a double-diaphragm pump (manufactured by Irie Seisakusho, YD type), and the paste is supplied to the disperser. In addition, the same as the embodiment 1-3, Comparative Examples 4 and 5 are the same.

Embodiment 7

[0123] In the same manner as in Examples 1 to 3 and Comparative Examples 4 and 5, the paste containing the inorganic powder was adjusted, and then the back panel and the front panel were prepared to complete the PDP.

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Abstract

The invention relates to an approach of producing cataplasm containing inorganic powders. Its characters is using dispersant loading into cylinder container to disperse cataplasm containing inorganic powders. Cataplasm produced in the invention has merits of little eyewinker quantity, short processing time and excellent decentrality.

Description

technical field [0001] The present invention relates to an inorganic powder-containing paste suitable for the production of members for plasma display panels and its production method. Background technique [0002] Plasma display panels (hereinafter referred to as PDPs) are attracting attention as displays that can be used for thin and large televisions. The PDP is mainly composed of a front panel and a rear panel. On the glass substrate on the front panel side serving as the display surface, a plurality of sustaining electrodes are formed in pairs using materials such as silver, chromium, aluminum, nickel, or the like. Then, a 20 to 50 μm thick dielectric layer mainly composed of glass is formed to cover the sustain electrodes. Furthermore, an MgO layer covering the dielectric layer was formed. [0003] On the other hand, a plurality of strip-shaped address electrodes are formed on the glass substrate on the back side. Next, a dielectric layer mainly composed of glass i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F7/00H01J9/20H01J9/00
Inventor 草野一孝柿本秋男井口雄一朗
Owner TORAY IND INC