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Method and device for production of plasma display panel

A plasma display screen and installation part technology, which is applied in the manufacture of discharge tubes/lamps, cold cathodes, electrode systems, etc., can solve the problems of complicated exhaust pipe manufacturing process, low production efficiency, and high manufacturing cost, and achieves a reduction in Steps to install vent holes, improve product quality, and reduce pollution

Inactive Publication Date: 2014-12-24
SICHUAN COC DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of complex manufacturing process, high manufacturing cost and low production efficiency of the exhaust pipe in the prior art, the present invention provides a preparation method and equipment for a plasma display screen

Method used

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  • Method and device for production of plasma display panel

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Effect test

preparation example Construction

[0022] In a typical implementation of the present invention, a method for preparing a plasma display screen includes the following steps: coating an adhesive on the surface to be sealed of the upper substrate and the lower substrate, and coating the upper substrate and the lower substrate The side with the adhesive is placed upwards in a closed space; the upper and lower substrates coated with the adhesive are subjected to the first temperature rise-cooling treatment, and the airtight The space is vacuumed for the first time; the upper substrate after cooling is turned over 180 degrees, and it is combined with the lower substrate, and the confined space is vacuumed for the second time; The working gas is filled in the space; the upper substrate and the lower substrate filled with the working gas are subjected to a second temperature rise-cooling treatment, so that the upper substrate and the lower substrate are sealed together.

[0023] In the method for preparing a plasma dis...

Embodiment 1

[0034] Plasma display screen: 60 inches.

[0035] Preparation:

[0036] Coating adhesive on the surfaces to be sealed of the upper substrate and the lower substrate, and placing the upper substrate and the lower substrate with the side coated with the adhesive facing up in a closed space

[0037] Heat the upper substrate and lower substrate coated with the adhesive to 420°C, keep it warm for 25 minutes, then cool it down to 360°C at a rate of 2°C / min, and keep it for 3 hours (the first temperature rise-cooling treatment), And at the same time of the first heating-lowering treatment, the confined space is vacuumed for the first time, and the vacuum degree is 2.0×10 -4 Pa.

[0038] Turn the lowered upper substrate over 180 degrees, put it together with the lower substrate, and perform a second vacuuming treatment on the enclosed space, with a vacuum degree of 3.5×10 -3 Pa.

[0039] After the second vacuuming process is completed, the airtight space is filled with working gas...

Embodiment 2

[0042] Plasma display screen: 60 inches.

[0043] Preparation:

[0044] Coating adhesive on the surfaces to be sealed of the upper substrate and the lower substrate, and placing the upper substrate and the lower substrate with the side coated with the adhesive facing up in a closed space

[0045] Heat the upper substrate and lower substrate coated with the adhesive to 490°C, keep it warm for 58 minutes, then cool it down to 400°C at a rate of 5°C / min, and keep it for 7 hours (the first temperature rise-cooling treatment), And at the same time of the first temperature rise-cooling treatment, the confined space is vacuumed for the first time, and the vacuum degree is 7.8×10 -4 Pa. Repeat the first heating-cooling step 2 times.

[0046] Turn the cooled upper substrate by 180 degrees, and put it together with the lower substrate, and perform a second vacuuming treatment on the enclosed space, with a vacuum degree of 4.0×10 -3 Pa.

[0047] After the second vacuuming process is...

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Abstract

The invention provides a method and a device for production of a plasma display panel. The method includes steps: placing an upper substrate and a lower substrate in a closed space, wherein one binder-coated side of each of the upper substrate and the lower substrate is upward; subjecting the upper substrate and the lower substrate which are coated with the binder to heating and cooling for the first time while vacuumizing in the closed space for the first time; turning the cooled upper substrate by 180 degrees to align and combine the upper substrate and the lower substrate, and vacuumizing the closed space for the second time; filling working gas into the closed space; and sealing the upper substrate with the lower substrate after the working gas is filled. The plasma display panel is packaged under the vacuumized condition, so that foreign gas generated in thermal decomposition of the glass substrates of the plasma display panel at high temperature can be discharged, an exhaust hole mounting step is omitted, cleanness of the glass substrates is guaranteed, pollution is reduced, and production quality is improved.

Description

technical field [0001] The invention belongs to the field of plasma display screens, in particular to a preparation method and device of a plasma display screen. Background technique [0002] At present, the general-purpose AC gas discharge plasma display screen adopts a surface discharge structure, including an upper substrate and a lower substrate sealed with it. The upper substrate is equipped with a transparent electrode ITO and a bus electrode, and the transparent electrode and the bus electrode constitute a discharge. Electrodes, the discharge electrodes include sustain discharge electrodes X and scan discharge electrodes Y, the surface of the discharge electrodes is covered with a dielectric layer, and the dielectric layer is covered with a protective layer. The protective layer is a magnesium oxide film. Addressing electrodes perpendicular to the discharge electrodes are arranged on the lower substrate, and a layer of dielectric layer is covered on the addressing ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/155H01J9/26
Inventor 曹瑞林
Owner SICHUAN COC DISPLAY DEVICES
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