Invention Application
US20090141750A1 SYSTEMS AND METHODS FOR LINK PROCESSING WITH ULTRAFAST AND NANOSECOND LASER PULSES
审中-公开
用ULTRAFAST和NANOSECOND激光脉冲串联处理的系统和方法
- Patent Title: SYSTEMS AND METHODS FOR LINK PROCESSING WITH ULTRAFAST AND NANOSECOND LASER PULSES
- Patent Title (中): 用ULTRAFAST和NANOSECOND激光脉冲串联处理的系统和方法
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Application No.: US11949530Application Date: 2007-12-03
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Publication No.: US20090141750A1Publication Date: 2009-06-04
- Inventor: Yunlong Sun , Richard S. Harris
- Applicant: Yunlong Sun , Richard S. Harris
- Applicant Address: US OR Portland
- Assignee: Electro Scientific Industries, Inc.
- Current Assignee: Electro Scientific Industries, Inc.
- Current Assignee Address: US OR Portland
- Main IPC: G21K5/10
- IPC: G21K5/10 ; H01S3/10 ; H01S3/13

Abstract:
Systems and methods for processing an electrically conductive link in an integrated circuit use a series of laser pulses having different pulse widths to remove different portions of a target structure without substantially damaging a material underlying the electrically conductive link. In one embodiment, an ultrafast laser pulse or bundle of ultrafast laser pulses removes an overlying passivation layer in a target area and a first portion of link material. Then, a nanosecond laser pulse removes a second portion of the link material to sever an electrical connection between two nodes in the integrated circuit. The nanosecond laser pulse is configured to reduce or eliminate damage to the underlying material.
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