Patent ID: 8492203
Filing Date: 2013-07-23
Classification: H01L

Abstract:
1. A method of making a semiconductor device, comprising: providing a semiconductor die; depositing an encapsulant over a first surface of the semiconductor die and around a peripheral region of the semiconductor die; forming a first insulating layer in direct contact with a second surface of the semiconductor die opposite the first surface of the semiconductor die and over the encapsulant, wherein a coefficient of thermal expansion (CTE) of the first insulating layer is within a first range; curing the first insulating layer with multiple dwell cycles to enhance adhesion to the semiconductor die and encapsulant; forming a first conductive layer over the first insulating layer; forming a second insulating layer in direct contact with the first insulating layer and first conductive layer, wherein a CTE of the second insulating layer is within a second range which is less than the first range and non-overlapping with the first range; curing the second insulating layer with multiple dwell cycles to enhance adhesion to the first insulating layer and first conductive layer; and forming a third insulating layer in direct contact with the second insulating layer, wherein a CTE of the third insulating layer is within a third range which is less than the first and second ranges and non-overlapping with the second range.