Patent ID: 9245801
Filing Date: 2016-01-26
CPC Classification: H01L

Claim Text:
1. A wafer comprising: a kerf junction comprising a first kerf and second kerf, the first kerf having a first main direction and the second kerf having a second main direction, the first kerf separating a first chip and a second chip on a first side of the second kerf and the first kerf separating a third chip and a fourth chip on a second side of the second kerf; a first continuous crack stop barrier having a third direction, wherein the third direction is different than the first main direction, wherein the first continuous crack stop barrier is located in the kerf junction, and wherein the first continuous crack stop barrier extends over a width of the first kerf but does not connect to the first chip and the second chip; a second continuous crack stop barrier having a fourth direction, wherein the fourth direction is different than the first main direction, wherein the second continuous crack stop barrier is located in the kerf junction, and wherein the second continuous crack stop barrier extends over the width of the first kerf but does not connect to the third chip and the fourth chip; and a third continuous crack stop barrier having a fifth direction, wherein the fifth direction is different than the second main direction, wherein the third continuous crack stop barrier is located in the kerf junction, and wherein the third continuous crack stop barrier extends across a majority but not the entire width of the second kerf.