Invention Grant
- Patent Title: Semiconductor devices and methods for backside photo alignment
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Application No.: US15050858Application Date: 2016-02-23
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Publication No.: US09741612B2Publication Date: 2017-08-22
- Inventor: Brandon P. Wirz , Keith Ypma , Christopher J. Gambee , Jaspreet S. Gandhi , Kevin M. Dowdle , Irina Vasilyeva , Yang Chao , Jon Hacker
- Applicant: Micron Technology, Inc.
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Agency: Perkins Coie LLP
- Main IPC: H01L21/768
- IPC: H01L21/768 ; H01L23/544 ; H01L21/683 ; H01L23/48 ; H01L21/027 ; H01L21/311

Abstract:
Various embodiments of microelectronic devices and methods of manufacturing are described herein. In one embodiment, a method for aligning an electronic feature to a through-substrate via includes forming a self-aligned alignment feature having a wall around at least a portion of the TSV and aligning a photolithography tool to the self-aligned alignment feature. In some embodiments, the self-aligned alignment feature is defined by the topography of a seed material at a backside of the device.
Public/Granted literature
- US20160172242A1 SEMICONDUCTOR DEVICES AND METHODS FOR BACKSIDE PHOTO ALIGNMENT Public/Granted day:2016-06-16
Information query
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