Manufacturing method for semiconductor device
View Patent ↗A Manufacturing method for a semiconductor device is provided and includes examining a semiconductor element on a semiconductor wafer, by an on-wafer test, storing on-semiconductor-wafer coordinate position data of the semiconductor devices and a result of the on-wafer test, and incorporating the semiconductor element, divided as individual pieces by dicing the semiconductor wafer, in packages followed by conducting a final test. When the semiconductor element is incorporated in the package, generated and stored is association data of the on-semiconductor-wafer coordinate position data with a mark on the package. Determined is the wafer test result of the semiconductor element in the package by referring the association data based on the mark of the package when conducting the final test. Skipped to perform is a test item, in which the result of the on-wafer test can be utilized, among test items to perform in the final test.
1. A method for manufacturing a semiconductor device, comprising:
examining each of a plurality of semiconductor elements on a semiconductor wafer by an on-wafer test,
storing a result of the on-wafer test and coordinate position data of the each of the semiconductor elements on the semiconductor wafer, the result of the on-wafer test and the coordinate position data being associated with each other,
dicing the semiconductor wafer into individual pieces of the semiconductor elements,
incorporating each of the individual pieces of the semiconductor elements into a package,
associating data of a mark on the package with the coordinate position data with respect to each of the semiconductor elements,
conducting a final test of each of the semiconductor elements in the package for at least one first test item, and
obtaining a result of the on-wafer test with respect to the each of the semiconductor elements in the package by referring to the association data based on the mark of the package for at least one of a second test item.
2. The method for manufacturing a semiconductor device according to claim 1 , wherein each of the semiconductor elements is a solid-state imaging element.
3. The method for manufacturing a semiconductor device according to claim 2 , further comprising grading each of the semiconductor elements in the package based on results of the on-wafer and final tests with respect to the each of the semiconductor elements.
4. The method for manufacturing a semiconductor device according to claim 3 , wherein the at least one second test item comprises at least one of the group consisting of: sensitivity, charge-transfer efficiency, and OFD-voltage optimization scanning; and the at least one first test item comprises at least one of the group consisting of: DC characteristic and pixel defects on the light surface due to foreign matter.
5. The method for manufacturing a semiconductor device according to claim 2 , wherein the at least one second test item comprises at least one of the group consisting of: sensitivity, charge-transfer efficiency, and OFD-voltage optimization scanning; and the at least one first test item comprises at least one of the group consisting of: DC characteristic and pixel defects on the light surface due to foreign matter.
6. The method for manufacturing a semiconductor device according to claim 1 , further comprising grading each of the semiconductor elements in the package based on results of the on-wafer and final tests with respect to the each of the semiconductor elements.
7. The method for manufacturing a semiconductor device according to claim 6 , wherein the mark of the package is referred to by reading the mark with a camera.
8. The method for manufacturing a semiconductor device according to claim 1 , wherein the mark of the package is referred to by reading the mark with a camera.