Defect Detection of Using Variant CNN in the Processing of Cover Glass, Touch Screen and Display under Parallel Light

Abstract—Due to the development of mobile phone technology, the precision requirements for various parts of the mobile phone processing industry are getting higher and higher. Under the screen fingerprint, curved screen and other functions, so that the phone cover glass, touch screen, display processing needs micron-level precision. Although the production process to minimize dust, powder and other interference, but there will still be some product defects. This paper discusses how to do defect detection better in the processing of mobile phone screen, and proposes a defect detection method based on variant CNN to improve the detection accuracy.