Method for manufacturing plasma display panel, inspection...

Details Method for manufacturing plasma display panel, inspection... Method for manufacturing plasma display panel, inspection...

2003-07-03

2008-11-11

Meeks, Timothy (Department: 1792)

Coating processes

Measuring, testing, or indicating

Thickness or uniformity of thickness determined

C427S068000, C427S256000, C427S372200

Reexamination Certificate

active

07449213

ABSTRACT:
A phosphor paste is applied to inner surfaces of a cell. Then, a conveyer moves a substrate relative to a CCD camera at a constant speed. Simultaneously, two LEDs radiate visible light onto a portion, to be inspected, of the substrate. The visible light is light configured to have a wavelength so as to be able to prevent the phosphor of the phosphor paste from being excited and emitting light and reflected by a liquid surface of the phosphor paste to produce reflected light. Thereafter, the CCD camera captures an image of the phosphor paste and a data processor processes the received image data, and determines whether a phosphor layer formed by drying the phosphor paste will normally be formed, prior to formation of phosphor layer.

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Korean Office Action.

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