AOI Techniques for Surface Defect Inspection

Abstract:

Recent years, automated optical inspection (AOI) is developed very fast along with the rapid development of the emerging industries of semiconductor, LCD, PCB, optical communication and precision assembly, and also widely used in the industries of robot, automobile, steel, textile, printing, medicine, etc. In this paper, we will take a review of the AOI techniques, which are used for defect inspection on a large surface, such as inspecting the quality of TFT-LCD glass substrate and filter. The AOI system architecture having high inspection speed is illustrated. Some key techniques of light illumination, distributed image processing and convey mechanism, are explained.

• Periodical: Applied Mechanics and Materials (Volume 36)
• Pages: 297-302
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.36.297
• Online since: October 2010
• Authors: Rong Sheng Lu, Yan Qiong Shi, Qi Li, Qing Ping Yu
• Keywords: Automated Optical Inspection, Conveyor, Defects Inspection, Distributed Image Processing, Lighting

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