Patent ID: 10269841

Abstract:
A sensor package includes a sensor, an encapsulation layer, a redistribution layer, a photo-imageable dielectric (PID) layer and via plugs. The encapsulation layer exposes the active surface of the sensor, and the top surface of the encapsulation layer is coplanar with the active surface of the sensor. The redistribution layer covers the top surface of the encapsulation layer and the active surface of the sensor. The PID layer covers the redistribution layer, the encapsulation layer and the active surface of the sensor. The via plugs are disposed around the sensor and through the encapsulation layer. The via plugs are electrically connected to the redistribution layer and the active surface of the sensor. The cross section of the via plug at the top surface of the encapsulation layer has a first hole diameter, and the cross section of the via plug at the bottom surface of the encapsulation layer has a second hole diameter. The first hole diameter is less than the second hole diameter.