Patent ID: 8146247
Filing Date: 2012-04-03
Classification: G01D,H01L,Y10T

Abstract:
1. A method for packaging a sensor unit, comprising steps of: providing a substrate having a plurality of sensor unit area, a signal emitting device, a signal detecting device of the sensor unit thereon, wherein each of the sensor unit area is partitioned into at least two individual circuit areas, where the signal emitting device and the signal detecting device are respectively disposed on the two circuit areas of the sensor unit area on surface and in interior of the substrate; forming a first packaging structure on the substrate to cover the two circuit areas of the sensor unit area, the signal emitting device the signal detecting device, and a cutting area defined on between the two circuit areas using a mold; cutting the first packaging structure along the cutting area to form a second cut groove between the two circuit areas so that the substrate is exposed from the second cut groove; and forming a second packaging structure in the second cut groove using the mold so that the signal emitting device and the signal detecting device of the same sensor unit area are isolated form each other.