Method of Producing a Thin Semiconductor Chip
First Claim
1. A method of fabricating a semiconductor chip, the method comprising:
- providing an adhesive layer on the outer area of an active surface of a device wafer;
bonding a rigid body to the active surface of the device wafer by the adhesive layer;
thinning the device wafer by treating a passive surface of the device wafer that is opposite to the active surface;
bonding a first backing tape to the passive surface of the device wafer;
separating an outer portion of the rigid body from a central portion of the rigid body and separating an outer portion of the device wafer from a central portion of the device wafer;
removing the central portion of the rigid body from the first backing tape;
removing the outer portion of the device wafer and the outer portion of the rigid body from the first backing tape; and
dicing the device wafer into semiconductor chips.
1 Assignment
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Accused Products
Abstract
A method of fabricating a semiconductor chip includes the providing an adhesive layer on the outer area of the active surface of a device wafer and attaching a rigid body to the active surface by the adhesive layer. The device wafer is thinned by treating the passive surface of the device wafer. A first backing tape is connected to the passive surface of the device wafer. The outer portion of the rigid body is separated from the central portion of the rigid body and the outer portion of the device wafer is separated from the central portion of the device wafer. The central portion of the rigid body, the outer portion of the device wafer and the outer portion of the rigid body are removed from the first backing tape. The device wafer may be diced into semiconductor chips.
22 Citations
26 Claims
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1. A method of fabricating a semiconductor chip, the method comprising:
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providing an adhesive layer on the outer area of an active surface of a device wafer; bonding a rigid body to the active surface of the device wafer by the adhesive layer; thinning the device wafer by treating a passive surface of the device wafer that is opposite to the active surface; bonding a first backing tape to the passive surface of the device wafer; separating an outer portion of the rigid body from a central portion of the rigid body and separating an outer portion of the device wafer from a central portion of the device wafer; removing the central portion of the rigid body from the first backing tape; removing the outer portion of the device wafer and the outer portion of the rigid body from the first backing tape; and dicing the device wafer into semiconductor chips. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification