Method for determining near-surface doping concentration
    5.
    发明授权
    Method for determining near-surface doping concentration 有权
    确定近表面掺杂浓度的方法

    公开(公告)号:US06326220B1

    公开(公告)日:2001-12-04

    申请号:US09710449

    申请日:2000-11-11

    IPC分类号: H01L2166

    CPC分类号: H01L22/14

    摘要: A method for determining near-surface doping concentration is provided by utilizing surface photovoltage. A monochromatic light pulse is applied to a semiconductor substrate. When the energy of the incident light is larger than the energy gap of the semiconductor substrate, the light is absorbed by the substrate and thereby generates enough charge carriers. The carriers diffuse to the surface of the substrate and result in lowering the surface barrier, and hence, cause a shift of the surface voltage. The difference of the surface voltages, before and after the light pulse applied, is measured by using a surface photovoltage probe. Then, the doping concentration near the surface of the substrate can be determined according to the difference of the surface voltage.

    摘要翻译: 通过利用表面光电压来提供确定近表面掺杂浓度的方法。 将单色光脉冲施加到半导体衬底。 当入射光的能量大于半导体衬底的能隙时,光被衬底吸收,从而产生足够的电荷载流子。 载流子扩散到基板的表面,导致表面势垒降低,因此引起表面电压的偏移。 通过使用表面光电压探测器来测量施加光脉冲之前和之后的表面电压的差异。 然后,可以根据表面电压的差异来确定衬底表面附近的掺杂浓度。

    Method for evaluating failure rate
    6.
    发明授权
    Method for evaluating failure rate 有权
    评估失败率的方法

    公开(公告)号:US08510635B2

    公开(公告)日:2013-08-13

    申请号:US12979914

    申请日:2010-12-28

    IPC分类号: G11C29/00

    摘要: A method for evaluating failure rate, which is applied to a plurality of semiconductor chips with error checking and correcting function includes the following steps. A first read-write test operation is applied to the semiconductor chips, thereby obtaining a plurality of first failure bit counting values. The error checking and correcting function of each of the semiconductor chips is off. An aging test is applied to the semiconductor chips. A second read-write test operation as the first read-write test operation is applied to the semiconductor chips, thereby obtaining a plurality of second failure bit counting values. The number of the semiconductor chips, the first failure bit counting values, the second failure bit counting values and an error checking and correcting coefficient are calculated to obtain a failure rate of the semiconductor chips.

    摘要翻译: 一种用于评估故障率的方法,其应用于具有错误检查和校正功能的多个半导体芯片包括以下步骤。 对半导体芯片应用第一读写测试操作,从而获得多个第一故障比特计数值。 每个半导体芯片的错误检查和校正功能关闭。 对半导体芯片进行老化试验。 作为第一读写测试操作的第二读写测试操作被应用于半导体芯片,从而获得多个第二故障位计数值。 计算半导体芯片的数量,第一故障比特计数值,第二故障比特计数值和错误校验系数,以获得半导体芯片的故障率。

    WAFER-LEVEL RELIABILITY YIELD ENHANCEMENT SYSTEM AND RELATED METHOD
    7.
    发明申请
    WAFER-LEVEL RELIABILITY YIELD ENHANCEMENT SYSTEM AND RELATED METHOD 审中-公开
    水平可靠性增强系统及相关方法

    公开(公告)号:US20080270056A1

    公开(公告)日:2008-10-30

    申请号:US11740916

    申请日:2007-04-26

    IPC分类号: H01L21/66 G01N37/00

    CPC分类号: H01L22/20

    摘要: A yield enhancement system has a fabrication line with semiconductor fabrication devices for fabricating a wafer, an inspection and measurement monitoring system coupled to the fabrication line for determining process data corresponding to semiconductor fabrication devices, and a post-process testing line coupled to the fabrication line for performing in-line wafer-level testing. The post-process testing line includes a wafer acceptance tester, a yield monitor coupled to the wafer acceptance tester, and a wafer level reliability tester coupled to the wafer acceptance tester for estimating a life span of a device on the wafer.

    摘要翻译: 屈服增强系统具有制造线,其具有用于制造晶片的半导体制造装置,耦合到制造线的检查和测量监测系统,用于确定对应于半导体制造装置的工艺数据,以及耦合到制造线的后处理测试线 用于进行在线晶圆级测试。 后处理测试线包括晶片接收测试仪,耦合到晶片接收测试仪的屈服监测器,以及耦合到晶片接收测试仪的晶片级可靠性测试器,用于估计晶片上的器件的寿命。

    On-wafer AC stress test circuit
    8.
    发明授权
    On-wafer AC stress test circuit 有权
    片上AC压力测试电路

    公开(公告)号:US07589551B1

    公开(公告)日:2009-09-15

    申请号:US12107772

    申请日:2008-04-23

    IPC分类号: G01R31/26 G01R31/02

    CPC分类号: G01R31/2858 G01R31/2884

    摘要: To make an alternating current (AC) stress test easier to perform in a wafer, an AC stress test circuit for performing the AC stress test on a test device fabricated in a test region of the wafer includes an oscillator module fabricated in the test region, a diode module fabricated in the test region coupled to an output of the oscillator module, and a select transistor fabricated in the test region having a gate terminal coupled to an output of the diode module, a second terminal coupled to a gate of the test device, and a third terminal coupled to a test voltage source.

    摘要翻译: 为了在晶片中更容易进行交流(AC)应力测试,用于对在晶片的测试区域中制造的测试装置进行AC应力测试的AC应力测试电路包括在测试区域中制造的振荡器模块, 制造在耦合到振荡器模块的输出的测试区域中的二极管模块,以及制造在测试区域中的选择晶体管,其具有耦合到二极管模块的输出的栅极端子,耦合到测试装置的栅极的第二端子 以及耦合到测试电压源的第三端子。

    Two-step chemical mechanical polishing process
    9.
    发明授权
    Two-step chemical mechanical polishing process 有权
    两步化学机械抛光工艺

    公开(公告)号:US07544618B2

    公开(公告)日:2009-06-09

    申请号:US11419129

    申请日:2006-05-18

    IPC分类号: H01L21/302 H01L21/461

    摘要: A chemical mechanical polishing method is disclosed. The method includes forming a film on a wafer having at least one trench structure thereon; polishing the surface of the film by providing a polishing composition to provide a first polished surface; rinsing the first polished surface with a rinse composition to provide a rinsed surface; and polishing the rinsed surface by providing a second polishing composition to provide a second polished surface.

    摘要翻译: 公开了一种化学机械抛光方法。 该方法包括在其上具有至少一个沟槽结构的晶片上形成膜; 通过提供抛光组合物来抛光膜的表面以提供第一抛光表面; 用漂洗组合物漂洗第一抛光表面以提供漂洗表面; 并通过提供第二抛光组合物来抛光冲洗的表面以提供第二抛光表面。

    TWO-STEP CHEMICAL MECHANICAL POLISHING PROCESS
    10.
    发明申请
    TWO-STEP CHEMICAL MECHANICAL POLISHING PROCESS 有权
    两步化学机械抛光工艺

    公开(公告)号:US20070269985A1

    公开(公告)日:2007-11-22

    申请号:US11419129

    申请日:2006-05-18

    IPC分类号: H01L21/302 H01L21/461

    摘要: A chemical mechanical polishing method is disclosed. The method includes forming a film on a wafer having at least one trench structure thereon; polishing the surface of the film by providing a polishing composition to provide a first polished surface; rinsing the first polished surface with a rinse composition to provide a rinsed surface; and polishing the rinsed surface by providing a second polishing composition to provide a second polished surface.

    摘要翻译: 公开了一种化学机械抛光方法。 该方法包括在其上具有至少一个沟槽结构的晶片上形成膜; 通过提供抛光组合物来抛光膜的表面以提供第一抛光表面; 用漂洗组合物漂洗第一抛光表面以提供漂洗表面; 并通过提供第二抛光组合物来抛光冲洗的表面以提供第二抛光表面。