Invention Grant
US08530247B2 Control of implant pattern critical dimensions using STI step height offset
有权
使用STI步距高度补偿控制植入模式临界尺寸
- Patent Title: Control of implant pattern critical dimensions using STI step height offset
- Patent Title (中): 使用STI步距高度补偿控制植入模式临界尺寸
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Application No.: US12323025Application Date: 2008-11-25
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Publication No.: US08530247B2Publication Date: 2013-09-10
- Inventor: Brian Douglas Reid , James David Bernstein , Hongyu Yue , Howie Hui Yang , Mark Boehm
- Applicant: Brian Douglas Reid , James David Bernstein , Hongyu Yue , Howie Hui Yang , Mark Boehm
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Warren L. Franz; Wade J. Brady, III; Frederick J. Telecky, Jr.
- Main IPC: H01L21/027
- IPC: H01L21/027 ; H01L21/66

Abstract:
A method for semiconductor processing is provided, wherein a semiconductor wafer having undergone polishing is provided. The semiconductor wafer has an active region positioned between one or more moat regions, wherein the one or more moat regions have an oxide disposed therein. A top surface of the active region is recessed from a top surface of the moat region, therein defining a step having a step height associated therewith. A step height is measured, and a photoresist is formed over the semiconductor wafer. A modeled step height is further determined, wherein the modeled step height is based on the measured step height and a desired critical dimension of the photoresist. A dosage of energy is determined for patterning the photoresist, wherein the determination of the dosage of energy is based, at least in part, on the modeled step height. The photoresist is then patterned using the determined dosage of energy.
Public/Granted literature
- US20090170222A1 CONTROL OF IMPLANT CRITICAL DIMENSIONS USING AN STI STEP HEIGHT BASED DOSE OFFSET Public/Granted day:2009-07-02
Information query
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