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    • 4. 发明专利
    • System and method for forming time averaged line image
    • 用于形成时间平均线图像的系统和方法
    • JP2012129500A
    • 2012-07-05
    • JP2011226264
    • 2011-10-13
    • Ultratech Incウルトラテック インク
    • SERGUEI ANIKITCHEVJAMES T MCWHIRTERJOSEPH E GORTYCH
    • H01L21/268H01L21/265
    • H01L21/268B23K26/006B23K26/0066B23K26/0738
    • PROBLEM TO BE SOLVED: To provide a system and method for forming a time averaged line image having a relatively high uniformity in intensity of laer light in the length direction.SOLUTION: A line image 36 having nonuniformity in intensity of first quantity in a major axis direction is formed on an image plane, and a secondary image 66 which at least partially overlaps with the line image 36 is formed. The method includes scanning the secondary image 66 at least at a part of the line image in the major axis direction according to a scanning profile to form a time averaged correction line image 36' having the intensity nonuniformity of second quantity in the major axis direction which is less than the first quantity. When performing laser annealing on a semiconductor wafer 40, the line image overlap amount of a scanning route part which adjoins a wafer scanning route is substantially reduced for increased wafer throughput.
    • 要解决的问题:提供一种用于形成在长度方向上具有较高亮度的均匀度的时间平均线图像的系统和方法。 解决方案:在图像平面上形成在长轴方向上具有第一量的强度不均匀的线图像36,并且形成与线图像36至少部分重叠的次级图像66。 该方法包括根据扫描轮廓至少在长轴方向上的一部分行图像上扫描二次图像66,以形成具有长轴方向上的第二数量的强度不均匀性的时间平均校正线图像36' 小于第一数量。 当在半导体晶片40上进行激光退火时,与晶片扫描路径相邻的扫描路径部分的行图像重叠量大大降低以增加晶片生产量。 版权所有(C)2012,JPO&INPIT
    • 5. 发明专利
    • Line imaging system and laser annealing method
    • 线成像系统和激光退火方法
    • JP2012009824A
    • 2012-01-12
    • JP2011094008
    • 2011-04-20
    • Ultratech Incウルトラテック インク
    • SERGUEI ANIKITCHEV
    • H01L21/268H01L21/265H01S3/00
    • B23K26/0643B23K26/066B23K26/0738B23K26/0853H01L21/268
    • PROBLEM TO BE SOLVED: To pass more light than a conventional line imaging system by cutting beyond a knife-edge aperture 50.SOLUTION: A line imaging system includes a laser 20, first and second cylindrical optical systems CL1, CL2 that include a first spatial filter SF1 therebetween, the knife-edge aperture 50, a cylindrical relay system, and a cylindrical condenser lens CFL. The first spatial filter SF1 is configured to cut a line focus LF1 in a center lobe, and generates a first light beam. The second cylindrical lens system CL2 is arranged in a remote field, and configured to perform spatial filter processing for passing a center intensity lobe of the first light beam and cutting an intensity lobe outside a range. A light beam having been subjected to the filter processing eventually twice has a relatively tip-flat intensity distribution with respect to a length of a line image LI.
    • 要解决的问题:通过切割刀刃孔50以外,比传统的线成像系统传递更多的光。解决方案:线成像系统包括激光器20,第一和第二圆柱形光学系统CL1, CL2,其间包括第一空间滤波器SF1,刀刃孔50,圆柱形中继系统和圆柱形聚光透镜CFL。 第一空间滤波器SF1被配置为在中心波瓣处切割线对焦LF1,并且产生第一光束。 第二柱面透镜系统CL2布置在远程场中,并被配置为执行用于使第一光束的中心强度波瓣通过并将强度波瓣切除在范围之外的空间滤波处理。 已经经过过滤处理的光束最终两次相对于线图像L1的长度具有相对尖端平坦的强度分布。 版权所有(C)2012,JPO&INPIT