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Novel regeneration method of PDP (Plasma Display Panel) barrier

A new type of barrier wall technology, applied in the field of ion display barrier wall regeneration and PDP barrier wall regeneration field, to achieve the effect of reducing scrap, saving manpower and material resources, and saving production costs

Inactive Publication Date: 2013-04-17
SICHUAN COC DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, in the mass production process of PDP, the regeneration machine can only regenerate the organic carrier in the barrier material when it is not completely volatilized, and the regeneration of the dried substrate is not complete, and the It is necessary for post personnel to wipe with alcohol, which is a waste of manpower and material resources, and the sintered barrier substrate, the barrier pattern size is bad, or the substrate with more than 2cell / Sheet scrapped due to barrier defects cannot be regenerated, and can only be scrapped.
These scraps have seriously affected the product yield and increased the company's operating costs

Method used

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  • Novel regeneration method of PDP (Plasma Display Panel) barrier
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  • Novel regeneration method of PDP (Plasma Display Panel) barrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The regeneration of the barrier rib regeneration substrate produced before the coating of the barrier rib upper layer comprises the following steps:

[0032] (1) During the production process of the barrier wall, when the lower layer of the barrier wall is coated, if it needs to be regenerated due to some abnormalities such as uncoating, tailing, and mixed liquid;

[0033] (2) When the lower layer of the barrier is dry, regeneration is required due to abnormal drying;

[0034] (3) Drying the regenerated substrate in step (1) on the lower layer of the barrier;

[0035] (4) Put the regenerated substrate dried in step (3) into the barrier sintering furnace for sintering after the regenerated substrate in step (2) is off-line. The sintering conditions are the same as those in normal production, and the temperature is controlled at 563°C;

[0036] (5) After the sintering is completed, the recycled substrate is off-line and put into the barrier etching machine;

[0037] (6...

Embodiment 2

[0047] The upper layer of the barrier is applied to the regeneration of the regenerated substrate in the barrier sintering furnace, including the following steps:

[0048] (1) During the production process of the barrier, when the upper layer of the barrier is coated, if it needs to be regenerated due to some abnormalities such as uncoating, tailing, and mixed liquid;

[0049] (2) When the upper layer of the barrier is dry, regeneration is required due to abnormal drying;

[0050](3) Drying the regenerated substrate in step (1) on the upper layer of the barrier;

[0051] (4) Flow the regenerated substrate dried in step (3) together with the regenerated substrate in step (2) to the barrier sintering furnace for sintering, the sintering conditions are the same as those in normal production, and the temperature is set at 564°C;

[0052] (5) After the sintering is completed, the recycled substrate is taken off the assembly line and put into a barrier etching machine;

[0053] (6...

Embodiment 3

[0058] The regeneration of the substrate with an abnormal sintered barrier film layer and the substrate with poor pattern and size of the barrier rib includes the following steps:

[0059] (1) After the sintering of the barrier, due to abnormalities on the surface of the film layer, some scratches, cracks, round spots, etc., such substrates need to be regenerated;

[0060] (2) In the process of graphics production, since the shape of the barrier does not meet the requirements of the process specifications or the scrapped surface of the substrate is ≥ 2cell / sheet, such substrates need to be regenerated;

[0061] (3) Offline the regenerated substrates in steps (1) and (2) and put them into the barrier etching machine;

[0062] (4) To change the process conditions of the barrier etching machine, only the speed process parameters should be changed to ≤3000mm / min; the other process parameters can not be changed, and the etching conditions in normal production should be followed.

...

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Abstract

The invention discloses a novel regeneration method of a PDP (Plasma Display Panel) barrier. The method comprises the steps of: coating the lower layer of the barrier to a barrier regeneration substrate generated in front of a barrier sintering furnace and casting the barrier regeneration substrate to the barrier sintering furnace to sinter; then, carrying out off-line processing for the sintered barrier regeneration substrate and further carrying out off-line processing for the regeneration substrate with an abnormal film of the barrier and the regeneration substrate with poor pattern size of the barrier; then, etching the regeneration substrates by a barrier etcher; and finally, re-coating the completely etched regeneration substrates after off-line processing according to a normal screen process flow. The invention further discloses regeneration liquid-barrier etching liquid nitric acid. The nitric acid is reacted with inorganic power of barrier material to finally separate the barrier material from the substrates so as to realize the regeneration effect. The method not only solves the difficulty that the substrate with dried barrier is not completely regenerated by a regenerator, but also regenerates the poor substrate with sintered barrier, so that the method makes an important contribution to cost reduction for companies.

Description

technical field [0001] The invention relates to a method for regenerating barrier walls of plasma display screens, in particular to a method for regenerating barrier walls of plasma display screens by replacing regenerators with new technology means, specifically a new method for regenerating barrier walls of PDPs, which is suitable for the field of barrier wall production. [0002] Background technique [0003] In a PDP display, the barrier is the basic element of the PDP discharge unit. Its height and width directly affect the size of the discharge space and the dynamic range of the control drive circuit. Their consistency in the full screen range is an important indicator to determine the performance of the display. The function of the barrier is to ensure the discharge gap between the two substrates, ensure a certain discharge space, and prevent photoelectric crosstalk between adjacent units. Main technical requirements: The barriers are required to be uniform in heigh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/20
Inventor 刘衍伟高永刚李新亮
Owner SICHUAN COC DISPLAY DEVICES