Advantages and application scope of semiconductor chip for machine appearance inspection

Date：2021-05-12 18:45:21 Views：1806

With the development of Industrial Science and technology, machine vision detection system is widely used in various fields, from medical images to remote sensing images, from industrial production detection to file processing, from nano micron technology to multimedia database. Machine vision detection system is needed in almost all occasions that need human vision, especially in some fields that require high requirements or cannot be perceived by human vision, For example, accurate quantitative perception, dangerous scene perception, invisible object perception and so on, the role of machine vision detection system is particularly important.

Advantages of machine appearance inspection semiconductor chip:

1.Non contact

As an accurate detection equipment, machine vision detection measures the detected object by analyzing and processing the detected object image. No contact is required in the measurement process, so there is no wear and danger to the measured object, and nondestructive testing is realized.

2.Continuity

The advantages of machine vision detection system are obvious, because people are emotional and can work. It is unreliable to use people as machines. Compared with human eyes, machines not only do not fatigue, but also have consistency and repeatability that people do not have, and can operate continuously for a long time.

In addition, since there is no manual operator, there is no man-made operation change, and multiple systems can be set to operate independently.

3. Accuracy

In recent years, due to the miniaturization of chip packaging, the increase of production complexity and the continuous enhancement of productivity, coupled with the wide use of various new components, the quality and efficiency of the production line can not be guaranteed only by using human eyes in the packaging and assembly line of semiconductor chips. The speed and accuracy of detection are the bottleneck restricting the further improvement of chip productivity and quality for a long time.

How to match the speed of packaging production and realize 99.99% on-line detection has always been the most concerned problem of semiconductor manufacturers. The detection speed and accuracy is an obvious advantage of machine vision detection. The rapidly changing machine vision detection system is replacing people for full-automatic product detection.

4.Economy

With the gradual maturity of visual inspection technology and the reduction of the price of processing hardware equipment, the economy of machine vision inspection gradually appears.

5.Scalability

The machine vision system can make various measurements. Machine vision system has better adaptability, diversity, flexibility and reconfigurability than optical and machine sensors. When the detection process needs to be changed, for the machine vision system, "tool replacement" is only to update the software, not to upgrade the expensive hardware. When the production line is reorganized, the machine vision system can often be retained and continue to be used.

Common applications are as follows:

Object measurement application

The visual appearance inspection system can quickly and accurately find the partition part and confirm its position. In semiconductor packaging, the device needs to adjust the pickup head according to the chip position information obtained by the machine, and accurately select and bind the chip, which is the most basic application in the field of vision of the machine.

Object sorting application

In fact, the object classification application is based on recognition and detection, and the images are processed by the visual appearance detection system to achieve sorting. In the machine vision industry, it is usually used for food classification, some parts, automatic sorting, cotton fiber sorting and so on.

Visual positioning application

The visual appearance inspection system can quickly and accurately find the partition part and confirm its position. In semiconductor packaging, the device needs to adjust the pickup head according to the chip position information obtained by the machine, and accurately select and bind the chip, which is the most basic application in the field of vision of the machine.

Image detection application

Appearance inspection is one of the most important applications in the field of machine vision. Almost all products need to be tested. However, there are many defects in manual detection. The manual detection accuracy is low, the machine can not work for a long time, and the detection speed is slow, which is easy to affect the efficiency of the whole production process. Therefore, visual appearance detection equipment is also widely used in image detection; At the same time, it can also overprint the color positioning in the printing process, check the printing quality of beverage bottle cap, product packaging bar code and character recognition, and glass bottle defect detection in the process of color comparison and packaging. The visual appearance detection system is used to detect the defects of glass bottles, including size detection, bottle appearance detection, bottle shoulder defect detection, bottle mouth detection, etc.

At present, the integration of various semiconductor chips is getting higher and higher, and the volume of the chip tends to be miniaturized and miniaturized, which puts forward higher requirements for the detection of the chip. In the field of industrial automation, visual appearance inspection is the core part. Visual appearance inspection technology plays an important role in object recognition, bar code recognition, product quality inspection and appearance dimension measurement.