Overview

Ultratech Stepper Inc. has launched the Model 1500MVS, the latest addition to its well-established Model 1500 Lithography Series. The Model 1500MVS incorporates Ultratech’s machine vision system (MVS), which provides enhanced alignment flexibility that is not achievable using traditional alignment methods. As a pattern recognition alignment system, the MVS eliminates the need for larger scribe lines between dies to accommodate dedicated alignment targets, resulting in an increase in the number of net die-per-wafer. According to Ultratech, the Model 1500’s MVS capability enables it to recognize targets produced for any other lithography tool, thereby eliminating the need for dedicated targets and facilitating the implementation of mix-and-match strategies.