Patent ID: 9023676
Filing Date: 2015-05-05
Classification: H01L

Abstract:
1. A wafer packaging method comprising: providing a light transmissive carrier; forming a hydrolytic temporary bonding layer on the light transmissive carrier; forming a first dam layer on the light transmissive carrier, wherein the first dam layer and the hydrolytic temporary bonding layer are located on a same surface of the light transmissive carrier, and the first dam layer does not overlap with the hydrolytic temporary bonding layer; bonding a first surface of a light transmissive protection sheet to the hydrolytic temporary bonding layer, such that the hydrolytic temporary bonding layer is located between the light transmissive protection sheet and the light transmissive carrier; bonding a second surface of the light transmissive protection sheet facing away from the first surface to a third surface of a wafer, wherein the third surface of the wafer has a plurality of integrated circuit units; immersing the light transmissive carrier, the hydrolytic temporary bonding layer, the light transmissive protection sheet, and the wafer in a high temperature liquid, such that adhesion force of the hydrolytic temporary bonding layer is eliminated; and obtaining the light transmissive protection sheet and the wafer from the high temperature liquid.