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    • 11. 发明授权
    • Method of fabricating thin film calibration features for electron/ion beam image based metrology
    • 制造电子/离子束图像测量的薄膜校准特征的方法
    • US07323350B2
    • 2008-01-29
    • US10957097
    • 2004-09-30
    • Sukhbir Singh DulayJustin Jia-Jen HwuThao John Pham
    • Sukhbir Singh DulayJustin Jia-Jen HwuThao John Pham
    • H01L21/00H01L23/58
    • G11B5/3173G11B5/3163
    • A method of making and using thin film calibration features is described. To fabricate a calibration standard according to the invention raised features are first formed from an electrically conductive material with a selected atomic number. A conformal thin film layer is deposited over the exposed sidewalls of the raised features. The sidewall material is selected to have a different atomic number and is preferably an nonconductive such as silicon dioxide or alumina. After the nonconductive material deposition, a controlled directional RIE process is used to remove the insulator layer deposited on the top and bottom surface of the lines and trenches. The remaining voids between the sidewalls of the raised features are filled with a conductive material. The wafer is then planarized with chemical mechanical planarization (CMP) to expose the nonconductive sidewall material on the surface. The nonconductive sidewall material will be fine lines embedded in conductive material.
    • 描述制造和使用薄膜校准特征的方法。 为了制造根据本发明的校准标准,首先由具有所选原子序数的导电材料形成凸起特征。 在凸起特征的暴露的侧壁上沉积保形薄膜层。 侧壁材料选择为具有不同的原子序数,并且优选为非导电性,例如二氧化硅或氧化铝。 在非导电材料沉积之后,使用受控的定向RIE工艺来去除沉积在线和沟槽的顶表面和底表面上的绝缘体层。 凸起特征的侧壁之间的剩余空隙填充有导电材料。 然后用化学机械平面化(CMP)对晶片进行平面化,以暴露表面上的非导电侧壁材料。 非导电侧壁材料将是嵌入导电材料中的细线。
    • 13. 发明授权
    • Dual function array feature for CMP process control and inspection
    • 用于CMP过程控制和检查的双功能阵列功能
    • US06929961B2
    • 2005-08-16
    • US10733980
    • 2003-12-10
    • Justin Jia-Jen HwuThomas L. Leong
    • Justin Jia-Jen HwuThomas L. Leong
    • H01L21/00H01L23/544
    • H01L22/34
    • CMP process control array groups are fabricated upon the surface of the wafer for viewing through an optical microscope. The array groups include a plurality of test arrays, where each array includes a plurality of projecting test features. Each of the projecting test features are formed with the same projecting height and have a hard upper surface layer, such as diamond-like-carbon (DLC). All of the projecting test features within an array are formed with the same diameter, and the diameter of projecting test features of a particular array differs from the diameter of projecting test features in another array. The diameters are chosen such that the DLC surface is removed in specifically designed time increments, such as 5 seconds, from array to array, where projecting test features with the DLC surface removed appear as bright white, while the arrays with test features that retain some DLC surface are significantly darker.
    • CMP工艺控制阵列组被制造在晶片的表面上,以通过光学显微镜观察。 阵列组包括多个测试阵列,其中每个阵列包括多个突出的测试特征。 每个突出的测试特征形成具有相同的突出高度并且具有硬的上表面层,例如类金刚石(DLC)。 阵列中的所有突出的测试特征形成为具有相同的直径,并且特定阵列的突出测试特征的直径与另一阵列中的突出测试特征的直径不同。 选择直径使得DLC表面以特定设计的时间增量(例如从阵列到阵列的5秒)去除,其中去除DLC表面的突出的测试特征显示为亮白色,而具有测试特征的阵列保留一些 DLC表面明显较暗。
    • 18. 发明授权
    • Method for manufacturing a magnetic write head
    • 磁写头的制造方法
    • US07454828B2
    • 2008-11-25
    • US11286076
    • 2005-11-23
    • Sukhbir Singh DulayJustin Jia-Jen HwuThao John Pham
    • Sukhbir Singh DulayJustin Jia-Jen HwuThao John Pham
    • G11B5/127H04R31/00
    • G11B5/1278G11B5/3163Y10T29/49041Y10T29/49043Y10T29/49046Y10T29/49048Y10T29/49052
    • A method for measuring recession in a wafer undergoing an asymmetrical ion mill process. The method includes the formation of first and second reference features and possibly a dummy feature. The reference features are constructed such that the location of the midpoint between them is unaffected by the asymmetrical ion mill. By measuring the distance between a portion of the dummy feature and the midpoint between the reference features, the amount of recession of the dummy feature can be measured. The measurement can be used to calculate the relative location of the flare to the read sensor rear edge through overlay information. By keeping the angles of the sides of the features steep (ie. nearly parallel with the direction in which the ion mill is asymmetrical) the amount of material consumed on each of the reference features is substantially equal and the midpoint between the reference features is substantially stationary.
    • 用于测量经历不对称离子磨工艺的晶片中的凹陷的方法。 该方法包括形成第一和第二参考特征以及可能的虚拟特征。 参考特征被构造成使得它们之间的中点的位置不受不对称离子磨机的影响。 通过测量虚拟特征的一部分与参考特征之间的中点之间的距离,可以测量虚拟特征的衰退量。 该测量可用于通过覆盖信息计算耀斑与读取传感器后缘的相对位置。 通过保持特征的侧面的角度陡峭(即,几乎平行于离子磨机的方向不对称),在每个参考特征上消耗的材料的量基本相等,并且参考特征之间的中点基本相等 静止的