公开(公告)号：US20070145989A1

公开(公告)日：2007-06-28

申请号：US11318660

申请日：2005-12-27

申请人： Hua Zhu ,  Erich Chuh ,  Timothy Swettlen

发明人： Hua Zhu ,  Erich Chuh ,  Timothy Swettlen

IPC分类号： G01R31/02

CPC分类号： G01R1/06772 ,  G01R1/07342

摘要： In high current integrated circuit wafer test applications, a high capacitance density capacitor may be formed in association with a probe card at a position closer to a wafer under test. This reduces the power path impedance, improving transient power delivery of a probe card. That is because now the capacitance is positioned more closely to the wafer under test, reducing path impedance. The capacitance density may be at higher, improving transient power delivery.

摘要翻译： 在大电流集成电路晶片测试应用中，可以在更接近被测晶片的位置处与探针卡相关联地形成高容量密度电容器。 这降低了电源通路阻抗，改善了探针卡的瞬态功率传递。 这是因为现在电容被放置得更靠近待测晶圆，减少了路径阻抗。 电容密度可能较高，从而改善瞬态功率传递。

公开(公告)号：US06567240B2

公开(公告)日：2003-05-20

申请号：US09793236

申请日：2001-02-26

申请人： Bradley Frederick Baumgartner ,  Andrew John Buhler ,  Erich Chuh ,  Hang Fai Ngo ,  Alma Lujan Ortega-Avery ,  Bob C. Robinson ,  Song How Wong-Jessel ,  Elmer Tyree York

发明人： Bradley Frederick Baumgartner ,  Andrew John Buhler ,  Erich Chuh ,  Hang Fai Ngo ,  Alma Lujan Ortega-Avery ,  Bob C. Robinson ,  Song How Wong-Jessel ,  Elmer Tyree York

IPC分类号： G11B582

CPC分类号： G11B5/82

摘要： A disk for a disk drive uses a circular platter having first and second sides and a circumferential edge. The circumferential edge of the disk has four symmetrically spaced apart shadows and a fifth or additional shadow that gives the disk an asymmetrical shadow signature. The fifth shadow is offset relative to the other shadows, which have congruent arcuate lengths and separation. The fifth shadow has an arcuate length that is about half as long as those of the other shadows, and is closely spaced adjacent to one of the other shadows. The asymmetric shadow signatures of the disk is used to precisely determine both the circumferential position of the platters and their planar orientation (i.e., A-side or B-side). For example, when the disk is mounted on a tool spindle and rotated, an optical detector detects the pattern of the shadows and feeds the data to a computer system. The rotational position of the spindle also is relayed to the computer for coordinating the processing of the rotating disk. When the disk is mounted on a different tool, the same shadow signature is used to determine its planar and angular positions.

摘要翻译： 用于磁盘驱动器的磁盘使用具有第一和第二侧面以及周缘的圆盘。 盘的圆周边缘具有四个对称间隔开的阴影和第五或另外的阴影，其给予盘不对称的阴影签名。 第五个阴影相对于其他阴影是偏移的，它们具有一致的弓形长度和分离距离。 第五个阴影具有的弓形长度大约是其他阴影的一半长度，并且与其他阴影之一紧密相隔。 磁盘的非对称阴影签名用于精确地确定盘片的圆周位置及其平面取向（即A侧或B侧）。 例如，当盘安装在工具主轴上并旋转时，光学检测器检测阴影的图案并将数据馈送到计算机系统。 主轴的旋转位置也被中继到计算机，用于协调旋转盘的处理。 当磁盘安装在不同的工具上时，使用相同的阴影签名来确定其平面和角位置。