Recently in the history of Chinese enterprises in 4 nm chip packaging technology breakthrough, let the parties, thinks that the key or chip manufacturing technology breakthrough, 4 nm packaging technology breakthrough not much meaning, obviously this is a mistake, for it is a Chinese chip manufacturing by the easy and difficult to shortcut, finally realizes the whole industrial chain.
First, the importance of packaging
Packaging technology is also an important link in chip manufacturing, it needs to be selected from a whole piece of wafer chip out qualified chip, and then connect these chips with the external circuit, so that the chip can work normally, such as with the process of ascension, however, the transistor is more and more small, wafer wire spacing is small, its technical difficulty is greater and greater.
Domestic 4 nm chip packaging technology or a multi-dimensional heterogeneous chip packaging technology, that is, multiple types of chips will be packaged together, so more test packaging enterprise technology, packaging companies need to be familiar with the structure of the different chip, understand the electrical performance of different chip, the accurate implementation connectivity at the same time to ensure the compatibility of different chip, this is a difficult technology.
Chip packaging is still one of the ways to develop advanced technology. The chip industry in Taiwan of China is now at the top level in the world. However, in the early years, they also started from packaging technology, and gradually understood the structure of chips, accumulated technology and talents through receiving the outsourcing of chip packaging business from the United States, and then entered chip manufacturing.
Packaging has become a big industry, chip industry chain of the world's top nine out of ten packaging enterprises in Asia, mainland China and Taiwan is occupied most of them, now the chip industry has also realized the importance of packaging technology, is planning to pick up the packaging industry, it also shows the importance of encapsulation link.
It can be said that It is a great progress for China to achieve 4nm process in packaging technology. On the existing basis, we should first promote the links that can achieve breakthroughs, and then concentrate resources on other links that are still backward, and finally achieve breakthroughs in the whole industry chain from easy to difficult.
Ii. The development path of China's chip industry chain
In fact, that is exactly what China is doing today. Under the control of lithography, the eight major parts of chip manufacturing have been advancing rapidly. It is understood that seven of the eight links of chip manufacturing have been advanced to 14nm process, among which the etching machine has made the fastest progress - etching machine has reached 5nm, and domestic etching machine has been used by TSMC.
These links that have been completed are also very important. Samsung, which previously had the most advanced technology in the world, was restricted by Japan because of the photoresist problem. Then South Korea quickly concentrated its resources on r&d and mass production of its own photoresist, getting rid of the dependence on Japanese photoresist, which can illustrate the importance of these production links.
This also shows that China's approach of easy and difficult is correct, can solve the technical links first, when the last link - lithography machine is solved, the advanced process can immediately start, quickly realize the mass production of advanced technology.
In terms of advanced technology, China is also actively preparing for, in the case of unable to get EUV lithography machine, smic has Chinese chip manufacturing enterprises in the development of nearly 7 nm N + 1, N + 2 technology, the industry pointed out that the existing DUV lithography is unable to produce 7 nm process, just cost is too high, but for some important industry, In the case that it is impossible to obtain OEM production from chip enterprises outside mainland China, it is of special significance to realize the 7nm process produced by DUV lithography machine without considering the cost.
In this respect, advanced 4nm packaging technology is of special significance. On the one hand, advanced packaging technology can improve the chips produced by the existing mature process. On the other hand, advanced packaging technology can help accelerate the research and development of advanced process by better understanding the details of advanced process.
Can say 4 nm encapsulation technology still has positive significance for the Chinese chip manufacturing, of course should not be overestimated 4 nm encapsulation technology, but more desirable disgraced 4 nm packaging technology, we each a breakthrough on chip technology should be correct, only together, each link play their part, will be eventually to advanced technology.
