发明申请
US20060160332A1 Method and system for high-speed precise laser trimming, scan lens system for use therein and electrical device produced thereby
有权
用于高速精密激光修整的方法和系统,用于其中的扫描透镜系统以及由此产生的电气装置
- 专利标题: Method and system for high-speed precise laser trimming, scan lens system for use therein and electrical device produced thereby
- 专利标题(中): 用于高速精密激光修整的方法和系统,用于其中的扫描透镜系统以及由此产生的电气装置
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申请号: US11245282申请日: 2005-10-06
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公开(公告)号: US20060160332A1公开(公告)日: 2006-07-20
- 发明人: Bo Gu , Joseph Lento , Jonathan Ehrmann , Bruce Couch , Yun Chu , Shepard Johnson
- 申请人: Bo Gu , Joseph Lento , Jonathan Ehrmann , Bruce Couch , Yun Chu , Shepard Johnson
- 主分类号: H01L21/78
- IPC分类号: H01L21/78 ; A61N5/00 ; H01L21/301
摘要:
A method, system and scan lens system are provided for high-speed, laser-based, precise laser trimming at least one electrical element. The method includes generating a pulsed laser output having one or more laser pulses at a repetition rate. Each laser pulse has a pulse energy, a laser wavelength within a range of laser wavelengths, and a pulse duration. The method further includes selectively irradiating the at least one electrical element with the one or more laser pulses focused into at least one spot having a non-uniform intensity profile along a direction and a spot diameter as small as about 6 microns to about 15 microns so as to cause the one or more laser pulses to selectively remove material from the at least one element and laser trim the at least one element while avoiding substantial microcracking within the at least one element. The wavelength is short enough to produce desired short-wavelength benefits of small spot size, tight tolerance and high absorption, but not so short so as to cause microcracking.
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