5G era is coming, mobile phone shell zirconia ceramic material big analysis!

Abstract At the beginning of 2017, Hefei Huiyu Advanced Ceramic Materials Technology Co., Ltd. invested a total of about 500 million yuan. After the completion of the project, it will produce 30 million pieces of smart phone ceramic backboard. The initial investment is 100 million yuan. It will be put into operation in October this year. After that, the third ring The group issued a notice saying that it cooperates with Changying Precision,...
At the beginning of 2017, Hefei Huiyu Advanced Ceramic Materials Technology Co., Ltd. has a total investment of about 500 million yuan. After the completion of the project, it will produce 30 million pieces of smart phone ceramic backboard. The initial investment is 100 million yuan. It will be put into operation in October this year. Since then, Sanhuan Group Announced that it has cooperated with Changying Precision to invest 8.7 billion yuan in the production of ceramic appearance parts and modules of intelligent terminals and smart wearable products with an annual production capacity of more than 100 million pieces; followed by Nantong Tongzhou Bay New Material Technology Co., Ltd. "Nano Precision Ceramics New Materials Project" was officially started on February 28, with a total investment of 500 million yuan.

Figure: Xiaomi 6 ceramic exclusive version, the first four-curved ceramic body
Why are these companies pushing the smart ceramic backsheet and zirconia ceramic materials project? The answer is: the 5G era is coming!
With the development of communication technology, 5G communication is likely to be initially commercialized in 2020. The remarkable feature of 5G signal is that the signal transmission speed is faster (transmission speed is 10-100 times of 4G), which greatly facilitates people's lives. ! 5G communication will use the spectrum above 3Ghz, its millimeter wave wavelength is very short, the interference from metal is very powerful, ceramic and glass have "congenital advantages". With the gradual popularization of ceramics in the field of mobile phone functions such as fingerprint recognition and wireless charging, ceramic materials have the characteristics of no signal shielding, high hardness, strong perception and close to the excellent heat dissipation of metal materials, which has become an important choice for mobile phone companies to enter the 5G era. Let's talk about the ceramic materials used in mobile phone cases, which are mainly divided into:
1. What is ceramic material?
Ceramic materials are an indispensable material in human life and modernization. It is one of the most important materials in inorganic non-metallic materials that people follow after metal materials and non-metal materials. It has the common advantages of metal materials and polymer materials, and its friability has been greatly improved in the process of continuous modification.
Common ceramic materials are roughly divided into two categories
According to different uses, special ceramic materials can be roughly divided into three categories.
2. What are the ceramics on the mobile phone?
April 19, 2017
Xiaomi released the flagship machine Xiaomi 6 ceramic exclusive version, the first four-curved ceramic body, the camera decorative ring is 18K gold-plated.
October 25, 2016
Xiaomi released a concept phone called Xiaomi MIX. About Xiaomi MIX, everyone's attention is in front, in fact, the back cover of this all-ceramic body is also a big bright spot.
February 24, 2016
Xiaomi 5 Ceramics Edition was officially released, and Xiaomi became the first brand in the world to successfully use 3D ceramics.
March 2015
Huawei P7 ceramic version of the mobile phone officially launched. In October of the same year, the one-plus mobile phone X officially released the 2.5D ceramic version of the mobile phone, which laid the foundation for the development of the ceramic body.
2012
South Korea's mobile phone manufacturer Pantech's VegaRacer2 mobile phone first adopted a ceramic body, the first ceramic body phone came out

Apple, which has always been the "wind vane" of the smartphone industry, has not yet introduced ceramic mobile phones, but zirconia ceramics have been added to the material of Apple's "Apple Watch" back cover.
       3. What is zirconia ceramic?
Zirconium ceramics (ZrO2 ceramics) have high melting point and high boiling point, high hardness, insulator at normal temperature, and electrical conductivity at high temperatures. Pure ZrO2 is white, yellow or gray when containing impurities, generally containing HfO2, not easy to separate.
Due to the phase change toughening characteristics, ceramic materials for consumer electronics are mostly zirconia ceramics.
Zirconium oxide ceramics are very difficult to produce and the yield is very low. At present, the major domestic producers include Sanhuan Group, Bun Optics, Lansi Technology, Japan Kyocera, Sunlord Electronics (shared in Dongguan Xinbai), Jincheng Foxconn, Hongtong Ceramics Ding Ding ceramics, etc. The yield of the back cover of zirconia ceramics is about 20-30%, and the purchase price is about 200 (the price of different mobile phones will be different). It is used for the cover on the fingerprint module. A small piece is about 5 yuan. .
Comparison of several mobile phone back cover materials:

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