Patent ID: 7012670
Filing Date: 2006-03-14
Classification: G03F

Abstract:
1. A method of adjusting a photo-exposure time for a semiconductor manufacturing process, the method comprising: adjusting a photo-exposure time of a photo-exposure step performed on a semiconductor device in accordance with one or more adjustment signals; obtaining information about the semiconductor device during a pre-exposure process performed prior to the photo-exposure step, the information including a value of a factor influencing the width of a line formed on the semiconductor device in the photo-exposure step; providing the information as feed forward data; generating an inspection value by measuring an aspect of the semiconductor device after it has been subjected to the photo-exposure step, and providing the inspection value as feed back data; and, receiving the feed forward data and the feed back data, and generating the one or more adjustment signals based on the feed forward data and the feed back data.