Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Design for a Defective Product Inspection Device for the Curved Glass used in Smart-phones

스마트폰 곡면 강화유리의 불량품 검사장치 설계

  • Kim, Han-Sol (Department of Control and Instrumentation Engineering, Gyeongsang National University) ;
  • Lee, Kyung-Jun (Department of Control and Instrumentation Engineering, Gyeongsang National University) ;
  • Jung, Dong-Yean (Deaho Technology Korea, Co., Ltd.) ;
  • Lee, Yeon-Hyeong (Deaho Technology Korea, Co., Ltd.) ;
  • Park, Jea-Hyun (Deaho Technology Korea, Co., Ltd.) ;
  • Kim, Gab-Soon (Department of Control and Instrumentation Engineering, Gyeongsang National University)
  • Received : 2015.03.16
  • Accepted : 2015.07.10
  • Published : 2015.08.01
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Abstract

This paper describes the design for a defective product inspection device for the curved glass used in smart-phone. Cameras are used as inspection devices to find cracks in LCDs (Liquid Crystal Displays), PDPs (Plasma Display Panels), etc. The devices used to inspect the curved glass used in smart-phone consist of a camera, two back-light apparatus, an inspection apparatus main body, and an image processing program. Camera image calibration was performed to smooth an image taken with the camera, and as a result, the average error was less than 0.12 pixels. And the image of a smart-phone's curved glass taken with the camera was processed using the produced program. As a result, the program could correctly extract the cracks on the curved glass. Thus, it is thought that the designed inspection device can successful detect cracks in curved tempered glass.

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References

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