Jp2006234470

Abstract

The present invention provides a color blur inspection method and the apparatus thereof, which could inspect the existence and level of color blur in high precision without the influence by personal difference and status difference of individual. The present invention could eliminate the Mohr's stripes, adjust the focus of focusing optical system 34, employ a video camera device 35 to capture the substrate 31, and inspect the existence and level of color blur according to the photo data.

Description

technical field [0001] The present invention relates to a method and an apparatus for inspecting the presence, degree, etc. of color moiré (mura) of a color film formed on a substrate in a color filter manufacturing process and the like. Background technique [0002] Conventionally, it is known that color moiré occurs due to uneven dispersion of pigments, aggregation of components, and changes in film thickness in the manufacturing process of color filters used in flat panel displays. In order to prevent the problem of continuing the manufacturing operation in the state where the color moire is generated, the presence or degree of the color moire is inspected using a camera and a light source. [0003] In addition, a method has been proposed in which a display screen of a display device to be inspected, such as an LCD, is photographed by an imaging device having a CCD or the like, and the quality of the display device to be inspected is inspected (see Patent Document 1). Th...

AI Technical Summary

Problems solved by technology

[0005] When using the method of Patent Document 1 to check the presence, degree, etc. of color moiré, it is considered that the presence, degree, position, etc. In order to identify the occurrence of moire, there must be individual differences, and the degree of adjustment of the focus (focal length) of the lens of the imaging device must also be adjusted by the operator while visually adjusting the focus, so individual differences must occur. The results are as follows Problem: When the operator is changed, the inspection results of the presence or absence and degree of color moiré vary.

Specifically, there is a problem that the moire cannot be sufficiently removed, or the color moire is also removed.

[0006] In addition, even if the operator does not change, for example, the eyesight and concentration in the morning and evening will change, so there is a problem of deviation in the test results.

[0007] In addition, the color of the color film, the pattern on the substrate, and the lamination order of the color film differ from model to model, so there is a problem that the conditions for generating moiré vary.

Images