Patent ID: 7678670
Filing Date: 2010-03-16
Classification: H01L

Abstract:
1. A manufacturing method for semiconductor chips comprising: sticking a protective sheet onto a first surface of a semiconductor wafer, the first surface having semiconductor devices placed in a plurality of device-formation-regions defined by dividing regions and a test element group (TEG) placed in the dividing regions and formed on the first surface, so that the sheet is brought in contact with the TEG; placing a mask on a second surface of the semiconductor wafer, the second surface being located opposite the first surface of the wafer so as to define the dividing regions; performing plasma etching on the second surface of the wafer after the protective sheet is stuck to the first surface and the mask is placed on the second surface, thereby removing portions corresponding to the dividing regions and then dividing the device-formation-regions into individual semiconductor chips, each individual semiconductor chip including an individualized semiconductor device; and removing a remaining portion of the TEG, which remains in the dividing regions and is stuck to the protective sheet, together with the protective sheet by peeling off the protective sheet from the semiconductor chips divided by the plasma etching, thereby manufacturing the individualized semiconductor chips.