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Job Description:

  • 1) Inspects master or production photo mask plates used in fabrication of semiconductor devices for defects and to ensure conformance to specifications: Positions photo mask plate on stage of microscope or computer-aided inspection equipment.

  • 2) Focuses and aligns lens with predetermined coordinates on photo mask plate.

  • 3) Inspects photo mask plate for defects, such as misalignment of design, contamination, cracks, pinholes, and streaking, and compares photo mask pattern to original design to verify conformance to specifications.

  • 4) Enters commands to activate computer-aided inspection equipment that automatically scans surface of photo mask plate to locate and record defects.

  • 5) Records inspection information, and sorts photo mask plates according to inspection results.

  • 6) May measure critical dimensions of pattern on photo mask plate and compares dimensions to design requirements, using microscopes with attached calibrated viewing or image shearing apparatus.

  • 7) May photograph surface of defective photo mask plate, using instant-print camera.

  • 8) May operate laser-beam equipment to repair circuitry defects on photo mask plate.




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End Of Job Description for: "PHOTO MASK INSPECTOR"
DOT:   726.384-022

Job Number: 7379