Cross-section polish
Backside polish
This is a quick sample preparation method which comes up with clear sample surface by local grinding with sandpaper (or diamond sandpaper) or grinding head followed by polishing.
What iST can do for you
iST can not only provide original cross-section, but also offer IC backside polishing. From the chip backside, grind the substrate to a specified thickness before performing polishing. The main purpose is to enable the following analysis.
Basic process flow of sample cross-sectioning
- Cutting：Cut sample into proper sizes using a cutter
- Cold fill：Fill mix glue into gaps of sample to enhance structural strength of the sample, so that it is not damaged by the grinding stress
- Grinding：Grind the sample with different sand paper (or diamond sandpaper)
- Polish：Polish with a turntable added with proper polishing liquid to eliminate fine scratches resulting from grinding.
The Superiority of iST
Case Sharing
Die Cross-Section
Cu process Cross-section
Bump Cross-section
Backside grinding of general IC
Backside grinding of COB sample
OBIRCH image after backside polishing
- IC products, such as Flip Chip, Al/Cu process structure, C-MOS Image Sensor
- PCB/PCBA product
- LED product
Contact Window | Mr. Lin/Afu | Tel:+886-3-5799909#6631 | Email:web_pfa@istgroup.com