Earlier today Patently Apple posted a report titled "Rumor Claims that the Anniversary iPhone will have a 2007 Retro-Design Modernized with Curved 3D Backside Glass." Bringing back a glass or ceramic backside to the iPhone is designed to support Apple's new wireless charging technology.
In a new report by DigiTimes this morning they note that "Wireless charging demand is expected to pick up with the arrival of the next-generation iPhones and the trend is also expected to prompt smartphone vendors to adopt glass or ceramic-based chassis instead of the traditional metal one because of its new charging method.
Chassis makers have also been pushing physical direct connection (PDC) technology to help improve these new chassis' yield rates and costs. Sources from chassis makers pointed out that the PDC technology is to use chemicals to etch nanometer holes on raw materials such as metal, glass and ceramic and then use an injection method to laminate the materials with plastic parts.
Since metal chassis will create interference with the wireless charging's induction coil, glass or ceramic type of chassis has become popular among smartphone vendors that are looking to release wireless charging smartphones."
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