What scanning method is used for internal fracture of IC

The importance of IC chips is self-evident, as they are widely used in various fields, including electronic devices, communication, computers, medical, automotive, aerospace, etc. They play a very important role in the entire electronic circuit, such as computing and processing data, storage, communication control and sensing, image processing, and other functions. If the IC chip is damaged and there are internal abnormalities such as fractures, it cannot be seen from the appearance. The commonly used method is to use infrared thermography technology. Infrared thermal imaging uses infrared radiation to detect the temperature distribution of objects, thereby helping to detect fractures or hotspots inside ICs. In infrared thermal imaging, the IC chip is energized to generate heat, and then an infrared thermal imager is used to capture the infrared radiation image of the chip surface. By analyzing these images, fractures or abnormal hotspots inside the IC can be detected, as these areas typically exhibit different temperature distributions from the surrounding areas. Infrared thermal imaging technology has the characteristics of non-contact, rapidity, and high sensitivity, which can detect internal fractures without damaging the IC chip. However, infrared thermal imaging also has its limitations, such as being less sensitive to small fractures or internal fractures that cannot be observed on the chip surface.

In addition, X-ray testing machines or CT machines can also be used. X-ray testing machines use X-rays to penetrate objects to detect whether there are defects inside the object. Compared to infrared thermal imaging, they have more prominent advantages, such as "what you see is what you get". The operator can operate the mouse to click wherever they want to see, and the display can quickly display the image of the location, whether there are defects inside, the size and quantity of defects The shape, position, etc. can be visually displayed on the monitor, and the image can also be saved for later review.