Title:
リブ付カラーフィルター基板のリブ欠落の検査方法
Document Type and Number:
Japanese Patent JP4097834
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To precisely and easily detect omission of a rib and to rapidly judge whether a color filter substrate is normal or defective by comparing the color pattern data containing a rib with the color pattern data not containing the rib in the vicinity from the inputted image data and detecting only the rib. SOLUTION: The image of the color pattern 10 image picked up by a CCD camera 1 is sent to a detection part 6, and a detection signal in the main scan direction X is sent answering to the sub-scan direction Y of the color pattern 10. This detection signal outputs a waveform according to its height when the rib exists on the color pattern 10, and the detection signal of a defective projection of a foreign matter, etc., appears irregularly and variously in its size also. By performing this signal the comparison processing with the pitch delayed signal of the color pattern in a comparison processing part 7, only a rib signal is extracted. Then, the image of the rib is made one point in a contraction processing part 8. The data not becoming one point at that time are omitted as a defect larger than the rib.
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Inventors:
Yoshimi Toda
Application Number:
JP6378799A
Publication Date:
June 11, 2008
Filing Date:
February 03, 1999
Export Citation:
Assignee:
Takano Co., Ltd.
International Classes:
G02F1/13; G06T1/00; G01N21/956; G02B5/20; G02F1/1335; G02F1/1339; G01N21/95
Domestic Patent References:
| JP11002717A | ||||
| JP6208017A | ||||
| JP8145849A | ||||
| JP7035696A | ||||
| JP11194349A | ||||
| JP6313871A | ||||
| JP11024082A | ||||
| JP8304227A | ||||
| JP11288463A | ||||
| JP9244033A | ||||
| JP9277095A |
Attorney, Agent or Firm:
Shimoda Shigeru