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    • 64. 发明专利
    • Mis type semiconductor device and method of manufacturing the same
    • MIS型半导体器件及其制造方法
    • JP2003338507A
    • 2003-11-28
    • JP2002147237
    • 2002-05-22
    • Renesas Technology Corp株式会社ルネサステクノロジ
    • TSUCHIYA RYUTAHORIUCHI KATSUTADA
    • H01L27/092H01L21/336H01L21/8238H01L29/49H01L29/78
    • H01L29/6659H01L21/823864H01L29/4983H01L29/665H01L29/6656Y10S257/90
    • PROBLEM TO BE SOLVED: To speed up a signal delay by suppressing the short channel effect of a MIS type transistor and reducing the fringing capacity of a gate.
      SOLUTION: With respect to the MIS type transistor, a sidewall spacer is formed of an insulation film having a high dielectric constant. With the sidewall spacer as a mask, an impurity diffusion layer region is formed. The sidewall of the sidewall spacer having a high dielectric constant is formed in an optimum thickness (5 to 15 nm) necessary to achieve a high driving current, and an outer sidewall spacer is formed of an insulation film (silicon oxide film) having a small dielectric constant. By this structure, a short channel effect can be sufficiently suppressed, and source and drain parasitic resistance can also be suppressed. Furthermore, a parasitic capacity can be held down resulting in achieving high driving performance.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:通过抑制MIS型晶体管的短沟道效应并降低栅极的边缘容量来加速信号延迟。 解决方案:对于MIS型晶体管,侧壁间隔物由具有高介电常数的绝缘膜形成。 以侧壁间隔物作为掩模,形成杂质扩散层区域。 在实现高驱动电流所需的最佳厚度(5〜15nm)中形成具有高介电常数的侧壁间隔物的侧壁,并且外侧壁间隔物由具有小的绝缘膜(氧化硅膜)形成 介电常数。 通过这种结构,可以充分抑制短沟道效应,还可以抑制源极和漏极寄生电阻。 此外,可以抑制寄生容量,从而实现高驱动性能。 版权所有(C)2004,JPO
    • 65. 发明专利
    • Gate structure of mos type fet
    • MOS型FET的门结构
    • JPS61134072A
    • 1986-06-21
    • JP25693984
    • 1984-12-05
    • Toshiba Corp
    • ENDO KAZUOMITANI TATSURONODA NOBORU
    • H01L29/78H01L29/43H01L29/49
    • H01L29/4983H01L29/4975
    • PURPOSE: To enhance the heat resistance, chemical resistance, oxidation resistance, and high frequency characteristic by a method wherein the front and back of a high melting point metallic film or the whole surface of the high melting point metallic layer are covered with a high melting point silicide layer.
      CONSTITUTION: A resist film 31 of required pattern in accordance with the gate region of a semiconductor substrate 20 is formed on a high melting point silicide layer 22 of the uppermost layer. Next, etching is carried out by using the resist film 31 as the mask, thus forming a state that the top and bottom of a gate electrode 23 are covered with the high melting point silicide 22, and the resist film 31 is removed. Another high melting point silicide film 22 is formed on the gate insulation film 21 by sputtering so as to cover the exposed surface of the electrode 23 and the silicide 22 on its top. Thereafter, the silicide film 22 is etched by a reactive ion etching having anisotropy; accordingly, a gate structure 25 of the MOSFET covered with the silicide film 22 at the regions of the top and side of the gate electrode 23 is obtained.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:通过高熔点金属膜的前面和背面或高熔点金属层的整个表面被高熔点覆盖的方法来提高耐热性,耐化学性,耐氧化性和高频特性 点硅化物层。 构成:在最上层的高熔点硅化物层22上形成根据半导体衬底20的栅极区域的所需图案的抗蚀剂膜31。 接下来,通过使用抗蚀剂膜31作为掩模进行蚀刻,从而形成栅电极23的顶部和底部被高熔点硅化物22覆盖的状态,并且去除抗蚀剂膜31。 通过溅射在栅极绝缘膜21上形成另一高熔点硅化物膜22,以覆盖电极23的暴露表面和顶部的硅化物22。 此后,通过具有各向异性的反应离子蚀刻蚀刻硅化物膜22; 因此,获得了在栅电极23的顶部和侧面的区域处被硅化物膜22覆盖的MOSFET的栅极结构25。
    • 66. 发明专利
    • Mis type field effect semiconductor device
    • MIS类型场效应半导体器件
    • JPS59124161A
    • 1984-07-18
    • JP22925982
    • 1982-12-29
    • Fujitsu Ltd
    • TSUCHIYA SHINPEI
    • H01L27/10H01L29/49H01L29/78
    • H01L29/4983H01L29/78
    • PURPOSE:To obtain an FET, wherein a threshold voltage is not dhanged during the operation even though the size of each part is proportionally reduced, by making the work function of a material on the drain side larger than that on the source side, thereby constituting a gate electrode. CONSTITUTION:On a p type Si substrate 16, n source and drain 14 and 15 and an insulating film 13 are provided as usual, and a gate electrode is formed by poly Si. B ions are implanted in the entire area of the gate electrode. Then, with a p type gate electrode part 12 as a mask, As ions are implanted, and an n type gate electrode part 11 is formed. In this constitution, since the conduction band level of the electrode 12 in the vicinity of drain 15 is increased by about 1eV than the electrode 11 in the vicinity of the source 14, a voltage, which is applied to the gate insulating film 13 in the vicinity of the layer 15, is decreased by 1eV. Therefore the injection electric field in the vicinity of the layer 15 is lowered, and the injection of hot electrons is suppressed. Since the gate electric field at the lower gate voltage is oriented in the repelling direction of the electrons, the injection is further suppressed. In this case, a channel is formed on the source side. Thus Vth is not changed during the operation even though the device is made compact.
    • 目的:为了获得FET,其中即使每个部件的尺寸成比例地减小,阈值电压也不会突出,通过使漏极侧的材料的功函数大于源极侧的材料的功函数,从而构成 栅电极。 构成:在p型Si衬底16上,如通常提供n +源极14和15以及绝缘膜13,并且通过多晶硅形成栅电极。 B离子注入到栅电极的整个区域中。 然后,以p +型栅电极部12为掩模,注入As离子,形成n +型栅电极部11。 在这种结构中,由于在源极14附近的漏极15附近的电极12的导带电平比电极11增加大约1eV,所以施加到栅极绝缘膜13的电压 层15的附近减少1eV。 因此,层15附近的注入电场降低,并且抑制了热电子的注入。 由于在栅极电压较低的栅电极被定向在电子的排斥方向,所以进一步抑制了注入。 在这种情况下,在源侧形成通道。 因此,即使器件紧凑,在操作期间也不会改变Vth。