Inspecting method and inspecting apparatus for liquid crystal di

Details Inspecting method and inspecting apparatus for liquid crystal di Inspecting method and inspecting apparatus for liquid crystal di

1999-07-16

2000-05-16

Dudek, James A.

Liquid crystal cells, elements and systems

Nominal manufacturing methods or post manufacturing...

Defect correction or compensation

345125, G02F 113

Patent

active

060644621

ABSTRACT:
The invention has an object of automating the inspection of cell-gaps of a liquid crystal display panel. An RGB image formed on the surface of a liquid crystal display panel (15) to be inspected is picked up with a CCD camera (17), and color non-uniformity is analyzed by an image processing unit (18), thereby to inspect the non-uniformity of the cell-gap.

REFERENCES:
patent: 5696550 (1997-12-01), Aoke et al.

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