公开(公告)号：US06753500B2

公开(公告)日：2004-06-22

申请号：US10078720

申请日：2002-02-19

申请人： Kaidong Ye ,  Chengwu An ,  Minghui Hong ,  Yongfeng Lu

发明人： Kaidong Ye ,  Chengwu An ,  Minghui Hong ,  Yongfeng Lu

IPC分类号： B23K2600

CPC分类号： H01L21/78 ,  B23K26/0853 ,  B23K26/38 ,  B23K2101/40

摘要： The invention relates to a method and apparatus for cutting a substrate using laser irradiation. A laser beam is scanned over a substrate. The beam ablates a first layer of the substrate. The beam is then refocused onto the newly revealed second layer and a further pass is performed. The process is repeated until complete separation occurs. The method and apparatus are particularly suitable for singulation of IC packages.

摘要翻译： 本发明涉及一种使用激光照射切割基板的方法和装置。 在衬底上扫描激光束。 光束消融基片的第一层。 然后将光束重新聚焦到新露出的第二层上，并进行另一遍。 重复该过程直到发生完全分离。 该方法和装置特别适用于IC封装的分离。

公开(公告)号：US20130093419A1

公开(公告)日：2013-04-18

申请号：US13703557

申请日：2011-06-13

申请人： Chengwu An ,  Kaidong Ye ,  Qiong Xie ,  Wendong Song ,  Kay Siang Tiaw

发明人： Chengwu An ,  Kaidong Ye ,  Qiong Xie ,  Wendong Song ,  Kay Siang Tiaw

IPC分类号： G01N21/01 ,  G01N21/63

CPC分类号： G01N21/01 ,  G01N21/63 ,  G01R33/0325

摘要： An apparatus and method of testing a magnetic medium at temperatures of interest is disclosed. Properties of the magnetic medium are determined by focusing light from a source of polarized light on a magnetic surface of the magnetic medium; measuring polarization of resulting reflected light due to the magneto-optical Kerr effect, using, for example a measuring subsystem; and varying the light source to heat the magnetic material where incident to pre-defined temperatures, thereby allowing determination of the magnetic properties using the magneto-optical Kerr effect at said pre-defined temperatures.

摘要翻译： 公开了在感兴趣的温度下测试磁性介质的装置和方法。 通过将来自偏振光源的光聚焦在磁性介质的磁性表面上来确定磁性介质的性质; 使用例如测量子系统测量由于磁光克尔效应引起的所产生的反射光的偏振; 并且改变光源以加热入射到预定温度的磁性材料，由此允许使用在所述预定温度下的磁光克尔效应来确定磁特性。

公开(公告)号：US08283622B2

公开(公告)日：2012-10-09

申请号：US12672998

申请日：2008-08-13

申请人： Chengwu An ,  Kaidong Ye

发明人： Chengwu An ,  Kaidong Ye

IPC分类号： G01J4/00

CPC分类号： G01R33/0325 ,  G01N21/21 ,  G01N27/72

摘要： A method and apparatus for testing a magnetic medium. The method comprises applying a magnetic field of a time-varying strength; directing a polarized optical beam towards a portion of the medium that is in the magnetic field, wherein the optical beam is reflected by a surface of the medium at a point of incidence in the magnetic field; moving the medium relative to the optical beam so as to cause the point of incidence to repeatedly traverse each of a plurality of sectors along a track on the surface; obtaining a series of Kerr signal measurements of the reflected optical beam; grouping measurements into ensembles such that the measurements in an individual ensemble are those obtained while the point of incidence was in a corresponding one of the sectors; and determining at least one magnetic property of at least one of the sectors from the measurements in the corresponding ensemble.

摘要翻译： 一种用于测试磁介质的方法和装置。 该方法包括施加时变强度的磁场; 将偏振光束引导到处于磁场中的介质的一部分，其中所述光束在所述磁场中的入射点处被所述介质的表面反射; 使所述介质相对于所述光束移动，以使所述入射点沿着所述表面上的轨道重复地穿过多个扇区中的每一个; 获得反射光束的一系列克尔信号测量; 将测量分组成集合，使得单个集合中的测量是当发生点在相应的扇区中时获得的测量; 以及从所述相应组合中的测量确定至少一个扇区的至少一个磁性。

公开(公告)号：US20110310387A1

公开(公告)日：2011-12-22

申请号：US12672998

申请日：2008-08-13

申请人： Chengwu An ,  Kaidong Ye

发明人： Chengwu An ,  Kaidong Ye

IPC分类号： G01J4/00

CPC分类号： G01R33/0325 ,  G01N21/21 ,  G01N27/72

摘要： A method and apparatus for testing a magnetic medium. The method comprises applying a magnetic field of a time-varying strength; directing a polarized optical beam towards a portion of the medium that is in the magnetic field, wherein the optical beam is reflected by a surface of the medium at a point of incidence in the magnetic field; moving the medium relative to the optical beam so as to cause the point of incidence to repeatedly traverse each of a plurality of sectors along a track on the surface; obtaining a series of Kerr signal measurements of the reflected optical beam; grouping measurements into ensembles such that the measurements in an individual ensemble are those obtained while the point of incidence was in a corresponding one of the sectors; and determining at least one magnetic property of at least one of the sectors from the measurements in the corresponding ensemble.

摘要翻译： 一种用于测试磁介质的方法和装置。 该方法包括施加时变强度的磁场; 将偏振光束引导到处于磁场中的介质的一部分，其中所述光束在所述磁场中的入射点处被所述介质的表面反射; 使所述介质相对于所述光束移动，以使所述入射点沿着所述表面上的轨道重复地穿过多个扇区中的每一个; 获得反射光束的一系列克尔信号测量; 将测量分组成集合，使得单个集合中的测量是当发生点在相应的扇区中时获得的测量; 以及从所述相应组合中的测量确定至少一个扇区的至少一个磁性。

公开(公告)号：US20120019952A1

公开(公告)日：2012-01-26

申请号：US13260714

申请日：2010-03-26

申请人： Siang Huei Leong ,  Budi Santoso ,  Chun Lian Ong ,  Joo Boon Marcus Travis Lim ,  Zhimin Yuan ,  Kaidong Ye

发明人： Siang Huei Leong ,  Budi Santoso ,  Chun Lian Ong ,  Joo Boon Marcus Travis Lim ,  Zhimin Yuan ,  Kaidong Ye

IPC分类号： G11B5/035

CPC分类号： G11B5/455

摘要： A magnetic media tester comprising a Laser Doppler Vibrometer (LDV) head; and a magnetic read head; the LDV head and the magnetic read head being configured for obtaining correlatable data of a region on a magnetic disk.

摘要翻译： 一种磁性介质测试仪，包括激光多普勒振动计（LDV）头; 和磁读头; LDV磁头和磁读头被配置用于获得磁盘上的区域的相关数据。

公开(公告)号：US08792193B2

公开(公告)日：2014-07-29

申请号：US13260714

申请日：2010-03-26

申请人： Siang Huei Leong ,  Budi Santoso ,  Chun Lian Ong ,  Joo Boon Marcus Travis Lim ,  Zhimin Yuan ,  Kaidong Ye

发明人： Siang Huei Leong ,  Budi Santoso ,  Chun Lian Ong ,  Joo Boon Marcus Travis Lim ,  Zhimin Yuan ,  Kaidong Ye

IPC分类号： G11B27/36

CPC分类号： G11B5/455

摘要： A magnetic media tester comprising a Laser Doppler Vibrometer (LDV) head; and a magnetic read head; the LDV head and the magnetic read head being configured for obtaining correlatable data of a region on a magnetic disk.

摘要翻译： 一种磁性介质测试仪，包括激光多普勒振动计（LDV）头; 和磁读头; LDV磁头和磁读头被配置用于获得磁盘上的区域的相关数据。