What are the listed companies that do packaging?

Tongfu Microelectronics (002156): The company is mainly engaged in the packaging and testing business of integrated circuits. It is the only packaging and testing manufacturer in China that has realized the quantitative production of high-end packaging and testing technology MCM and MEMS. Its technical strength ranks among the top.

2. Changdian Technology (600584): The company is the largest semiconductor packaging production base in my country and a well-known domestic manufacturer of transistors and integrated circuits. The quality of its products is at a leading level in the country.

It already has three key technology research and development platforms for IC that are in sync with international advanced technologies, forming an annual production capacity of 7.5 billion integrated circuits, 25 billion large, medium and small power transistors, and 1.2 million discrete device chips. It has become China's largest semiconductor packaging and testing company.

3. Huatian Technology (002185): The company is mainly engaged in the packaging and testing business of semiconductor integrated circuits and semiconductor components. It is one of the key integrated circuit packaging and testing companies in China.

The company's packaging capabilities and technical level rank third among domestic enterprises. It is the largest integrated circuit packaging base in western my country and a modern high-tech enterprise full of innovative spirit.

4. Taiji Industrial (600667): Hynix’s large-scale integrated circuit packaging and testing project with an investment of US$350 million will be able to test 120,000 12-inch wafers and 75 million wafers per month after completion. Production supporting capabilities for 12-inch wafer packaging.

Taiji Industrial’s participation in this project will transform the current simple business model into a dual-main business model including integrated circuit packaging and testing.

5. Suzhou Good Technetium (002079): The company’s main products are various semiconductor diodes (excluding photodiodes), with comprehensive diode wafer, chip design and manufacturing, diode packaging and testing capabilities, and retained Ranked among the top 10 in the domestic semiconductor discrete device industry and surpassed the position in the diode sub-industry.

Extended information:

Technical introduction

Packaging can also be said to refer to the shell used to install semiconductor integrated circuit chips. It not only plays the role of placing, fixing and sealing , protect the chip and enhance thermal conductivity.

It is also a bridge between the internal world of the chip and the external circuit - the contacts on the chip are connected to the pins of the package shell with wires, and these pins are connected to other devices through wires on the printed circuit board. connect. Therefore, packaging technology is a very critical link for many integrated circuit products.

Most of the CPU packages used are packed with insulating plastic or ceramic materials, which can seal and improve the electrothermal performance of the chip. As the internal frequency of processor chips is getting higher and higher, the functions are getting stronger, the number of pins is increasing, and the appearance of the package is also constantly changing.

Notes

1. In order to improve packaging efficiency, the ratio of chip area to packaging area should be as close to 1:1 as possible

2. The pins should be as short as possible to reduce delay, and the distance between pins should be as far as possible to ensure that they do not interfere with each other and improve performance

3. Based on heat dissipation requirements, the thinner the package, the better

As an important part of the computer, the performance of the CPU directly affects the overall performance of the computer. The last and most critical step in the CPU manufacturing process is the packaging technology of the CPU. There is a big gap in performance between CPUs using different packaging technologies. Only high-quality packaging technology can produce perfect CPU products.

Reference material: Baidu Encyclopedia - Packaging Technology