Abstract: A package structure is provided. The package structure includes an encapsulant and an interposer. The encapsulant has a top surface and a bottom surface opposite to the top surface. The interposer is encapsulated by the encapsulant. The interposer includes a main body, an interconnector, and a stop layer. The main body has a first surface and a second surface opposite to the first surface. The interconnector is disposed on the first surface and exposed from the top surface of the encapsulant. The stop layer is on the second surface, wherein a bottom surface of the stop layer is lower than the second surface.

Abstract: The present invention provides a magnetic levitation device comprising a base and a corresponding levitated object. The invention is characterized in that the base integrates a wireless power transmitting module and the levitated object integrates a wireless power receiving module. Given this arrangement, the base can transmit power wirelessly to further activate or control electronic components in the levitated object.

Abstract: The present invention discloses a protective device for a mobile device, comprising: a frame comprising a first sidewall, a second sidewall opposite to the first sidewall, a third sidewall and a fourth sidewall opposite to the third sidewall, the sidewalls being terminated with each other and thereby enclosing and defining a space for accommodating the mobile device, each of the first sidewall and the second sidewall being provided with a first engaging feature; and a backboard provided with a second engaging feature corresponding to the first engaging feature; wherein the backboard is formed separately from the frame and is assembled with the frame through the engagement of the first engaging feature and the second engaging feature of the frame. With the present invention, the style of the protective device enclosing the mobile device can be altered by merely replacing its backboard with a new one.

Abstract: The present invention discloses a protective device for a mobile device, comprising: a frame comprising a first sidewall, a second sidewall opposite to the first sidewall, a third sidewall and a fourth sidewall opposite to the third sidewall, the sidewalls being terminated with each other and thereby enclosing and defining a space for accommodating the mobile device, each of the first sidewall and the second sidewall being provided with a first engaging feature; and a backboard provided with a second engaging feature corresponding to the first engaging feature; wherein the backboard is formed separately from the frame and is assembled with the frame through the engagement of the first engaging feature and the second engaging feature of the frame. With the present invention, the style of the protective device enclosing the mobile device can be altered by merely replacing its backboard with a new one.