Patent ID: 11954841
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method, comprising:
binarizing, by an image analysis device, an image of a portion of a wafer to create a binarized image of the portion of the wafer;
determining, by the image analysis device, a bump pattern based on the binarized image; and
performing, by the image analysis device, a defect analysis of the determined bump pattern,
the defect analysis being associated with detecting a region of the portion of the wafer in which one or more wafer bumps satisfies a threshold height, and
wherein performing the defect analysis comprises:
identifying, based on the bump pattern, an open angular section,
the open angular section being an angular section of the portion of the wafer in which the bump pattern is not present,

calculating an angle associated with the open angular section, and
determining whether the angle associated with the open angular section satisfies an open angle threshold.