DEVICE AND METHOD FOR EVALUATING DEFECTS IN THE EDGE AREA OF A WAFER AND USE OF THE DEVICE IN INSPECTION SYSTEM FOR WAFERS
Patent №
US 8,089,622
Granted
2012-01-03
Filed 2008
Owner
VISTEC SEMICONDUCTOR SYSTEMS GMBH
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
12039047
A device for evaluating defects in the edge area of a wafer (6) is disclosed. The evaluation may also be performed automatically. In particular, the device includes three cameras (25, 26, 27), each provided with an objective (30), wherein a first camera (25) is arranged such that the first camera (25) is opposite to an edge area on the upper surface (6a) of the wafer (6), wherein a second camera (26) is arranged such that the second camera (26) is opposite to a front surface (6b) of the wafer (6), and wherein a third camera (27) is arranged such that the third camera (27) is opposite to an edge area on the lower surface (6c) of the wafer (6).
AI classification
Ownership
VISTEC SEMICONDUCTOR SYSTEMS GMBH
assignment · 205770749
Assignors
BIRKNER, ANDREAS, HOFMANN, MICHAEL, VOLLRATH, WOLFGANG, DR.
On an employer assignment, the assignors are typically the inventors.