Method of and mechanism for peeling adhesive tape bonded to segmented semiconductor wafer
AssigneeKabushiki Kaisha Toshiba
InventorsTetsuya Kurosawa, Shinya Takyu
Life of this patent
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Abstract
An adhesive tape peeling mechanism has an adhering section and a porous member. The adhering section adheres to a segmented semiconductor wafer bonded to adhesive tape. The porous member is provided on the surface adhering to the semiconductor wafer of the adhering section. The porous member is divided into at least two adhering areas in the direction in which the adhesive tape is peeled. The porous member adheres to the semiconductor wafer by suction and fixes the wafer in place.
Claims2
A method of peeling adhesive tape adhered to a semiconductor wafer segmented into a plurality of semiconductor chips, comprising:
- fixing the wafer, adhered to the adhesive tape, to a porous member by applying a vacuum, the porous member having a plurality of suction areas each having first and second suction paths, the wafer being initially fixed by applying a vacuum to the suction areas via a first suction path;
- peeling off the adhesive tape;
- and
- after the tape is peeled off portions of the wafer corresponding to each suction area, applying a vacuum to the corresponding suction area via the second suction path;
- whereby the semiconductor chips of the wafer portions from which the adhesive tape has been peeled off are fixed to the porous member by a vacuum applied via the second suction path.
A method of peeling adhesive tape bonded to a semiconductor wafer segmented into a plurality of semiconductor chips, comprising:
- placing the wafer on a holding table having a porous members, the porous member having a plurality of adhering areas;
- fixing the wafer, bonded to the adhesive tape, to the holding table by a vacuum, the adhering areas each having a first and second suction path, the wafer being initially fixed by applying a vacuum to the adhering areas via the first suction path;
- peeling off the adhesive tape;
- and
- after the tape is peeled off portions of the wafer corresponding to each adhering area, applying a vacuum to the corresponding adhering area via the second suction path;
- whereby the semiconductor chips of the wafer portions from which the adhesive tape has been peeled off are fixed to the holding table by a vacuum applied via the second suction path.
Dependencies are inferred from the claim text.