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    • 4. 发明授权
    • Method of fabricating next-to-minimum-size transistor gate using
mask-edge gate definition technique
    • 使用掩模边缘栅极定义技术制造下一个最小尺寸晶体管栅极的方法
    • US6022815A
    • 2000-02-08
    • US775412
    • 1996-12-31
    • Brian S. DoyleChunlin LiangPeng ChengQi-De Qian
    • Brian S. DoyleChunlin LiangPeng ChengQi-De Qian
    • H01L21/033H01L21/28H01L21/3213H01L21/8234H01L21/3205
    • H01L21/32139H01L21/0337H01L21/0338H01L21/28132H01L21/823456
    • A method of fabricating minimum size and next-to-minimum size electrically conductive members using a litho-less process is disclosed. A substrate is provided, and a layer of gate dielectric material is formed on the substrate. A layer of electrically conductive material is formed over the gate dielectric material. A first mask is used to form a hard mask. A layer of first spacer material is deposited over the existing structures, and the layer of first spacer material is etched back to form spacers adjacent to the hard mask. The width of the first spacers determines the minimum size gate length. A layer of second spacer material is deposited over the existing structures, including the hard mask and first spacers. The layer of second spacer material is etched back to form a second set of spacers adjacent to the first spacers. The width of the first and second spacers together determine the next-to-minimum size gate length. A second mask is used to protect the portion of the second spacers which are to be used to define next-to-minimum size gates, and the unprotected second spacers and the hard mask are removed. The exposed electrically conductive material is removed. The remaining spacers are then removed, leaving minimum size and next-to-minimum size gates.
    • 公开了使用无平滑工艺制造最小尺寸和接下来尺寸的导电构件的方法。 提供衬底,并且在衬底上形成栅极电介质材料层。 在栅极电介质材料上方形成一层导电材料。 使用第一个掩模形成硬掩模。 在现有结构上沉积第一间隔物层,并且将第一间隔物材料层回蚀刻以形成与硬掩模相邻的间隔物。 第一间隔物的宽度决定了栅极长度的最小尺寸。 在现有结构上沉积第二间隔物层,包括硬掩模和第一间隔物。 第二间隔物材料层被回蚀刻以形成邻近第一间隔物的第二组间隔物。 第一和第二间隔物的宽度一起确定下一个至最小尺寸的栅极长度。 使用第二掩模来保护用于限定下一个至最小尺寸的门的第二间隔物的部分,并且去除未受保护的第二间隔物和硬掩模。 暴露的导电材料被去除。 然后移除剩余的间隔物,留下最小尺寸和下至最小尺寸的门。
    • 7. 发明授权
    • Complementary metal gate electrode technology
    • 互补金属栅电极技术
    • US07187044B2
    • 2007-03-06
    • US09517705
    • 2000-03-02
    • Chunlin LiangGang Bai
    • Chunlin LiangGang Bai
    • H01L29/76
    • H01L21/823842
    • A method for making circuit device that includes a first transistor having a first metal gate electrode overlying a first gate dielectric on a first area of a semiconductor substrate. The first gate electrode has a work function corresponding to the work function of one of P-type silicon and N-type silicon. The circuit device also includes a second transistor coupled to the first transistor. The second transistor has a second metal gate electrode over a second gate dielectric on a second area of the semiconductor substrate. The second gate metal gate electrode has a work function corresponding to the work function of the other one of P-type silicon and N-type silicon.
    • 一种制造电路器件的方法,包括:第一晶体管,其具有覆盖在半导体衬底的第一区域上的第一栅极电介质的第一金属栅电极。 第一栅电极具有对应于P型硅和N型硅之一的功函数的功函数。 电路装置还包括耦合到第一晶体管的第二晶体管。 第二晶体管在半导体衬底的第二区域上的第二栅极电介质上具有第二金属栅电极。 第二栅极金属栅电极具有对应于另一个P型硅和N型硅的功函数的功函数。
    • 8. 发明授权
    • Method of making MOSFET gate electrodes with tuned work function
    • 制造具有调谐功能的MOSFET栅电极的方法
    • US06794232B2
    • 2004-09-21
    • US10383842
    • 2003-03-07
    • Jun-Fei ZhengBrian DoyleGang BaiChunlin Liang
    • Jun-Fei ZhengBrian DoyleGang BaiChunlin Liang
    • H01I21337
    • H01L21/82345H01L21/823425H01L27/088
    • Insulated gate field effect transistors having gate electrodes with at least two layers of materials provide gate electrode work function values that are similar to those of doped polysilicon, eliminate the poly depletion effect and also substantially prevent impurity diffusion into the gate dielectric. Bi-layer stacks of relatively thick Al and thin TiN for n-channel FETs and bi-layer stacks of relatively thick Pd and thin TiN, or relatively thick Pd and thin TaN for p-channel FETs are disclosed. Varying the thickness of the thin TiN or TaN layers between a first and second critical thickness may be used to modulate the work function of the gate electrode and thereby obtain the desired trade-off between channel doping and drive currents in FETs.
    • 具有至少两层材料的栅电极的绝缘栅场效应晶体管提供类似于掺杂多晶硅的栅电极功函数值,消除多余耗效应并且还基本上防止杂质扩散入栅电介质。 公开了用于n沟道FET的相对厚的Al和薄TiN的双层堆叠以及相对厚的Pd和薄TiN的双层堆叠,或者用于p沟道FET的相对厚的Pd和薄TaN。 改变第一和第二临界厚度之间的薄TiN或TaN层的厚度可以用于调制栅电极的功函数,从而在FET中的沟道掺杂和驱动电流之间获得期望的权衡。