Method for correcting and aligning work shadow cover and mask shadow cover before fluorescent powder jet printing

Abstract

The invention discloses a correcting and aligning method for a working shadow mask and a masking shadow mask used before spraying fluorescent powder on a shadow mask typed plasma display screen. The method corrects the windage of the working shadow mask and the masking shadow mask existing in any small area by adjusting the upper position and the lower position of a screw rod at the bottom part of an correcting and aligning framework; while the area which is next to the small area is not affected as the plane surface of the framework does not changed, thus realizing the aim of precisely adjusting the windage of the working shadow mask and the masking shadow mask by a fixed point. The two pieces of the shadow masks can realize complete precious contraposition on the whole surface by checking and adjusting one by one, thus laying a stable foundation for precise coating by the fluorescent powder with three basic colors and completely eliminating the problems of adhesion or color mixing of spraying large opening bridge powder caused by the aligning windage. The method of the invention is characterized by convenient operation and being able to preciously adjust up-and-down difference on the plane surface of any position on the framework.

Description

Technical field [0001] The invention relates to a production process of a shadow mask plasma, in particular to a method of using a working shadow mask and a mask shadow mask to carry out phosphor spraying, in particular to a shadow mask plasma display phosphor Correction and alignment method of working shadow mask and mask shadow mask before spraying. Background technique [0002] As we all know, plasma displays form images by discharging a specific gas and exciting fluorescent materials. That is, discharge is achieved by applying a predetermined voltage between two electrodes that are spatially close to each other and filled with gas. An image is formed by exciting the fluorescent layer formed in a predetermined pattern by ultraviolet rays generated by the gas. [0003] The shadow mask plasma display uses the shadow mask commonly used in color CRT (cathode ray tube) production to replace the barriers of the existing PDP (ie, plasma display panel) with complex manufacturing proce...

AI Technical Summary

Problems solved by technology

If the working shadow mask and the mask shadow mask with deviations are bonded and adsorbed and then sprayed directly, there will be a large amount of adhesion or color mixing of the large hole bridge flour in the working shadow mask, which is absolutely unacceptable for commercial products.

Since the problem of deviation between the two shadow masks cannot be completely eliminated under the current technical conditions, and the final product cannot tolerate color mixing, it can only be solved by correcting before the spraying process

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