Invention Grant
US09003337B2 Systems and methods of local focus error compensation for semiconductor processes
有权
用于半导体工艺的局部聚焦误差补偿系统和方法
- Patent Title: Systems and methods of local focus error compensation for semiconductor processes
- Patent Title (中): 用于半导体工艺的局部聚焦误差补偿系统和方法
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Application No.: US13671581Application Date: 2012-11-08
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Publication No.: US09003337B2Publication Date: 2015-04-07
- Inventor: Chia-Hao Hsu , Pei-Cheng Hsu , Chia-Ching Huang , Chih-Ming Chen , Chia-Chen Chen
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Duane Morris LLP
- Main IPC: G06F17/50
- IPC: G06F17/50 ; H01L21/02 ; G03F1/00

Abstract:
A system and method of compensating for local focus errors in a semiconductor process. The method includes providing a reticle and applying, at a first portion of the reticle, a step height based on an estimated local focus error for a first portion of a wafer corresponding to the first portion of the reticle. A multilayer coating is formed over the reticle and an absorber layer is formed over the multilayer coating. A photoresist is formed over the absorber layer. The photoresist is patterned, an etch is performed of the absorber layer and residual photoresist is removed.
Public/Granted literature
- US20140127836A1 SYSTEMS AND METHODS OF LOCAL FOCUS ERROR COMPENSATION FOR SEMICONDUCTOR PROCESSES Public/Granted day:2014-05-08
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