公开(公告)号：US12276919B2

公开(公告)日：2025-04-15

申请号：US17635290

申请日：2020-07-16

Applicant: ASML NETHERLANDS B.V.

Inventor： Marc Hauptmann ,  Cornelis Johannes Henricus Lambregts ,  Amir Bin Ismail ,  Rizvi Rahman ,  Allwyn Boustheen ,  Raheleh Pishkari ,  Everhardus Cornelis Mos ,  Ekaterina Mikhailovna Viatkina ,  Roy Werkman ,  Ralph Brinkhof

IPC: G03F7/00

Abstract: A method of controlling a semiconductor manufacturing process, the method including: obtaining first metrology data based on measurements performed after a first process step; obtaining second metrology data based on measurements performed after the first process step and at least one additional process step; estimating a contribution to the process of: a) a control action which is at least partially based on the second metrology data and/or b) the at least one additional process step by using at least partially the second metrology data; and determining a Key Performance Indicator (KPI) or a correction for the first process step using the first metrology data and the estimated contribution.

公开(公告)号：US12085913B2

公开(公告)日：2024-09-10

申请号：US17601307

申请日：2020-03-19

Applicant: ASML NETHERLANDS B.V.

Inventor： Marc Hauptmann ,  Amir Bin Ismail ,  Rizvi Rahman ,  Jiapeng Li

IPC: G05B19/404 ,  G03F7/00 ,  G03F7/20

CPC classification number: G05B19/404 ,  G03F7/70516 ,  G05B2219/45031 ,  G05B2219/50296

Abstract: A method for generating a sampling scheme for a device manufacturing process, the method including: obtaining a measurement data time series of a plurality of processed substrates; transforming the measurement data time series to obtain frequency domain data; determining, using the frequency domain data, a temporal sampling scheme; determining an error offset introduced by the temporal sampling scheme on the basis of measurements on substrates performed according to the temporal sampling scheme; and determining an improved temporal sampling scheme to compensate the error offset.

公开(公告)号：US11022896B2

公开(公告)日：2021-06-01

申请号：US16083076

申请日：2017-02-22

Applicant: ASML NETHERLANDS B.V.

Inventor： Emil Peter Schmitt-Weaver ,  Amir Bin Ismail ,  Kaustuve Bhattacharyya ,  Paul Derwin

IPC: G03F7/20 ,  G03F9/00

Abstract: Corrections are calculated for use in controlling a lithographic apparatus. Using a metrology apparatus a performance parameter is measured at sampling locations across one or more substrates to which a lithographic process has previously been applied. A process model is fitted to the measured performance parameter, and an up-sampled estimate is provided for process-induced effects across the substrate. Corrections are calculated for use in controlling the lithographic apparatus, using an actuation model and based at least in part on the fitted process model. For locations where measurement data is available, this is added to the estimate to replace the process model values. Thus, calculation of actuation corrections is based on a modified estimate which is a combination of values estimated by the process model and partly on real measurement data.