Thermal Application of Thermal Interface Materials in Smartphones

After using the smartphone for a period of time, you will find that the back of the smartphone becomes hot, and the system is obviously stuck during operation. In severe cases, it may crash or even spontaneously ignite. The thermal effect of current is widely present in modern society. The higher the power, the higher the heat generated when the phone is in use.

Lightweight is the current development trend of electronic products, and smartphones are no exception. The internal space utilization of mobile phones is extremely high, and heat is not easy to flow out from the inside, and it is easy to accumulate to increase the local temperature. Therefore, people will dissipate heat by installing the heat source of the mobile phone. Modules that guide heat to the outside of the phone, thereby reducing the temperature of the phone.

In addition to using the heat dissipation module, the thermal interface material is also used. The thermal interface material is a heat dissipation auxiliary material that can reduce the contact thermal resistance between the device heat source and the heat dissipation module and improve the heat transfer rate between the two, because considering the There is a gap between objects, so the thermal interface material will fill the gap between the two to remove the air in the gap and play the role of sealing and shock absorption.

There are many types of thermal interface materials, and the main ones on the market are thermally conductive silicone sheets, thermally conductive phase change sheets, thermally conductive insulating sheets, thermally conductive gels, thermally conductive silicone greases, silicon-free thermally conductive gaskets, thermally conductive wave absorbing materials, and thermally conductive energy storage materials, etc. Each thermal interface material has unique characteristics and has different applications in different occasions.