SURFACE DEFECT DETECTING APPARATUS FOR PCB AND METHOD FOR SURFACE DEFECT DETECTING OF PCB USING THE SAME

摘要

A surface defect detecting apparatus for a PCB(Printed Circuit Board) and a method for detecting a surface defect of the PCB using the same are provided to detect a fine defect quickly by performing a surface defect detection through a plurality of matrix shape height measuring units. In a surface defect detecting apparatus for a PCB, a height measuring unit(100) forms voltage data per each position coordinate value by contacting a plurality of height measurers, arranged as a matrix shape, with a surface of the PCB on which a circuit pattern is formed at once. A data transformer(200) transforms the voltage data to a digital signal. A database(400) stores reference data. A defect detecting unit(500) compares the digital signal with the reference data and detects/outputs a defect. The height measurer comprises a probe which is contacted with a surface of the PCB and moves vertically toward the PCB surface, a piezoelectric sensor which converts a pressure generated from a movement of the probe to the voltage data, and a signal amplifier which amplifies the voltage data.