Samsung Electro-Mechanics and Actro are working together to create a new machine that can check glass substrates for defects. Glass substrates are special glass materials that may be used in future semiconductor chips.

The new machine uses terahertz (THz) waves, a type of electromagnetic wave. These waves can go through glass and help find tiny cracks or damage inside the material. This allows engineers to check the glass without breaking or cutting it.

Samsung is providing glass substrate samples to Actro. Actro is using these samples to improve its inspection equipment and make it better at finding defects.

The biggest benefit of terahertz technology is that it is non-destructive. This means the glass does not get damaged during testing. It is also safer than X-ray inspection because it does not use harmful radiation. Another advantage is that it does not need liquids or special materials during the inspection process.

However, there is one problem. The inspection process is still slow. The machine checks one small point at a time instead of scanning the whole glass at once. Due to this, it takes a long time to inspect an entire glass substrate.

To solve this issue, Actro is developing a method that focuses only on areas where defects are likely to be found. This can help reduce inspection time and make the technology suitable for mass production.

Terahertz inspection will become more important as glass substrates are used in future semiconductor packaging. Samsung expects glass substrate technology to be commercialized around 2028. Both companies are working to make the inspection process faster and more practical for future semiconductor manufacturing.

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