Patent ID: 11960814
Assignee: POWERCHIP SEMICONDUCTOR MANUFACTURING CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 13:
14. The wafer searching method according to claim 1, wherein the step of estimating the fail pattern similarity between the first specific area and the each second specific area comprises:
estimating a plurality of first feature values of a plurality of preset distribution features of the first specific area;
for the i-th second specific area in the at least one second specific area, estimating a plurality of second feature values of the preset distribution features of the i-th second specific area; and
estimating the fail pattern similarity between the first specific area and the i-th second specific area based on the first feature values of the first specific area, the second feature values of the i-th second specific area, a number of the preset distribution features, and a correction parameter.