Patent ID: 9293369
Filing Date: 2016-03-22
CPC Classification: H01L,Y02P

Claim Text:
1. A method comprising: performing a laser grooving to remove a dielectric material in a wafer to form a trench, wherein the trench extends from a top surface of the wafer to stop at an intermediate level between the top surface and a bottom surface of the wafer, wherein the trench is in a scribe line between two neighboring chips in the wafer, and wherein the two neighboring chips are integrated circuit chips; after performing the laser grooving, attaching a die onto the wafer, the die being an integrated circuit die; after attaching the die, filling a polymer into the trench, the polymer overfilling the trench and extending along a top surface of the die; curing the polymer; and after the step of curing the polymer, performing a die saw to separate the two neighboring chips, wherein a kerf line of the die saw cuts through a portion of the polymer filled in the trench and wherein a non-vertical portion of a terminal surface of the polymer in the trench interfaces with a semiconductor substrate of the wafer after the die saw.