Abstract: A package includes a frontside redistribution layer (RDL) structure, a semiconductor die on the frontside RDL structure, and a backside RDL structure on the semiconductor die including a first RDL, and a backside connector extending from a distal side of the first RDL and including a tapered portion having a width that decreases in a direction away from the first RDL, wherein the tapered portion includes a contact surface at an end of the tapered portion. A method of forming the package may include forming the backside redistribution layer (RDL) structure, attaching a semiconductor die to the backside RDL structure, forming an encapsulation layer around the semiconductor die on the backside RDL structure, and forming a frontside RDL structure on the semiconductor die and the encapsulation layer.

Abstract: A fermentation method using an auxiliary enzyme for yeast, enzyme dough, brewing dough and bread, bun, steamed roll, bagel and a method for brewing xiao ban enzyme, and a method for making enzyme yeast are disclosed. The fermentation method includes using xiao ban dough, vegetable and fruit, whole grains and nuts. Xiao ban dough is the fundamental fluid with overall ratio of 3%˜300%. The method for making auxiliary enzyme for yeast includes using vegetable and fruits, whole unlit) and various nuts, and mixing with xiao ban dough. The duration of fermentation process is between 0-90 days, and the fermentation temperature is between 5 Degree Celsius to 30 Degree Celsius. The auxiliary enzyme for yeast can efficiently enhance food color, odor and taste and prolong food preservation.