Improving Marking Visual Inspection through Spectrum Enhancement Using Oblique Lightning Technique

In a semiconductor manufacturing industry, finished product such as micro devices packages are required to have own traceability to track its unique identity.  Now a day, one of the most useful product identifier on semiconductor manufacturing is through laser marking and its readability.  Laser marking is a process of etching technique by using amplified light beaming emitted from a machine module penetrated through the mold surface of the device package to create permanent traceability.  It also offers many advantages and each user will find specific benefits as they integrate it into their production processes.