Patent ID: 8987055
Filing Date: 2015-03-24
Classification: H01L

Abstract:
1. A method for packaging low-k chip, comprising the following steps: step 1: taking a low-k wafer and cutting it into individual chips; step 2: preparing a bearer wafer, forming aligning marks by photo-lithography on the bearer wafer, and completing pattern layout on the bearer wafer; step 3: attaching a temporary strippable film to the bearer wafer, and mounting the chips obtained in step 1 one by one to the bearer wafer attached with the temporary strippable film, to accomplish flip-chip mounting; step 4: attaching a film layer I( step 5: stripping the restructured wafer from the bearer wafer, and cleaning the surface of the chips on the restructured wafer, to expose the chip electrodes ( step 6: forming single-layer or multi-layer metal redistribution wires ( step 7: forming metal posts ( step 8: attaching a film layer II ( step 9: coating a metal layer ( step 10: forming BGA bumps (