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    • 2. 发明授权
    • Semiconductor device including a plurality of interconnection layers, manufacturing method thereof and method of designing semiconductor circuit used in the manufacturing method
    • 包括多个互连层的半导体器件,其制造方法和制造方法中使用的半导体电路的设计方法
    • US06835647B2
    • 2004-12-28
    • US10382902
    • 2003-03-07
    • Hiroyuki AmishiroMotoshige Igarashi
    • Hiroyuki AmishiroMotoshige Igarashi
    • H01L214763
    • H01L23/5283H01L23/5222H01L2924/0002H01L2924/00
    • A semiconductor device including an interconnection structure having superior electrical characteristics and allowing higher speed of operation and lower power consumption even when miniaturized, manufacturing method thereof and a method of designing a semiconductor circuit used in the manufacturing method are provided. In the semiconductor device, a conductive region is formed on a main surface of a semiconductor substrate. A first interconnection layer is electrically connected to the conductive region, has a relatively short line length, and contains a material having relatively high electrical resistance. A first insulator is formed to surround the first interconnection layer and has a relatively low dielectric constant. A second interconnection layer is formed on the main surface of the semiconductor substrate, contains a material having low electrical resistance than the material contained in the first interconnection layer, and has longer line length than the first interconnection layer. A second insulator is formed to surround the second interconnection layer and has a dielectric constant higher than the first insulator.
    • 提供一种包括具有优异的电气特性并且即使当其小型化也允许更高的操作速度和更低的功率消耗的互连结构的半导体器件,并且提供了制造方法中使用的半导体电路的设计方法。 在半导体器件中,在半导体衬底的主表面上形成导电区域。 第一互连层电连接到导电区域,具有相对短的线路长度,并且包含具有相对较高电阻的材料。 形成第一绝缘体以包围第一互连层并且具有相对低的介电常数。 第二互连层形成在半导体衬底的主表面上,包含比第一互连层中包含的材料低的电阻,并且具有比第一互连层更长的线长度。 形成第二绝缘体以包围第二互连层并且具有高于第一绝缘体的介电常数。
    • 5. 发明授权
    • Device for evaluating characteristic of insulated gate transistor
    • 绝缘栅晶体管特性评估装置
    • US06407573B1
    • 2002-06-18
    • US09238887
    • 1999-01-28
    • Kenji YamaguchiHiroyuki AmishiroYuko Maruyama
    • Kenji YamaguchiHiroyuki AmishiroYuko Maruyama
    • G01R3126
    • G01R31/2621H01L2924/0002H01L2924/00
    • A transistor having a longer channel length and serving as a reference, and a transistor having a shorter channel length and to be subjected to effective channel length extraction are prepared (step ST1.1). A hypothetical point at which a change in a total drain-to-source resistance is estimated to be approximately zero when a gate overdrive is slightly changed is extracted in a mask channel length versus total drain-to-source resistance plane. The values of a function (F) are calculated which are defined by the difference between the rate of change in the total drain-to-source resistance and the product of a channel resistance per unit length and the rate of change in a mask channel length at the hypothetical points (step ST1.6). A true threshold voltage of the transistor having the shorter channel length is determined by a shift amount (&dgr;) which minimizes the standard deviation of the function (F) determined in the step ST1.7 (step ST1.10). A resistance-based method thus extracts an effective channel length and a series resistance with increased accuracy.
    • 制备具有较长沟道长度并用作基准的晶体管,以及具有较短沟道长度并经受有效沟道长度提取的晶体管(步骤ST1.1)。 当栅极过驱动略微改变时,估计总漏极 - 源极电阻的变化大致为零的假想点,掩模沟道长度对总漏极 - 源极电阻平面提取。 计算函数(F)的值,其由总漏极 - 源极电阻的变化率与每单位长度的沟道电阻的乘积与掩模沟道长度的变化率之间的差定义 在假想点(步骤ST1.6)。 具有较短信道长度的晶体管的真实阈值电压由步骤ST1.7中确定的函数(F)的标准偏差最小化的移位量(delta)确定(步骤ST1.10)。 因此,基于电阻的方法提高了精确度的有效通道长度和串联电阻。