Speaking of the arrival of 5G era, the market is generally full of expectations for the speed and price of 5G signal. The coming of 5G era is bound to cause significant changes in the mobile phone industry, mainly from the beginning of plastic shell materials to metal and back to the cycle of non-metal materials. Plastic is favored by the low-end market due to its low cost.

Extending from IML to IMT technology, plastic becomes white, rich and beautiful, which can simulate 3D optical texture of glass back cover and become the choice of many designers. LDS has been widely used in the plastic rear shell antenna in the age of 4G, but whether it can adapt to the high-end curved glass 3D rear cover in the age of 5G needs to continue the layout research and development. IMT technology can also be further extended to IME technology, which integrates electrical and decorative functions and applies to the intelligent surface of future automobiles. Injection molding transparent PC back cover as a lower cost, efficient product form, with better impact strength and durability, is attracting more and more attention of traditional plastic factories.

According to the material of the back cover of the mobile phone released at present, the metal shell gradually disappears, and it needs to use nano-injection molding to transfer from the integration to the metal frame. Double-sided glass and a small amount of ceramic materials are not good at falling resistance, and they are basically equipped with protective shells. These transparent protective shells are mainly made by injection molding.