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    • 131. 发明申请
    • TRANSISTORS HAVING V-SHAPE SOURCE/DRAIN METAL CONTACTS
    • 具有V形形状/漏极金属接触的晶体管
    • US20080224231A1
    • 2008-09-18
    • US12105298
    • 2008-04-18
    • Huilong ZhuHaining YangZhijiong Luo
    • Huilong ZhuHaining YangZhijiong Luo
    • H01L29/76
    • H01L29/7834H01L21/76816H01L21/84H01L23/485H01L29/41733H01L29/41766H01L29/665H01L29/66636
    • A semiconductor structure. The semiconductor structure includes (a) a semiconductor layer, (b) a gate dielectric region, and (c) a gate electrode region. The gate electrode region is electrically insulated from the semiconductor layer. The semiconductor layer comprises a channel region, a first and a second source/drain regions. The channel region is disposed between the first and second source/drain regions and directly beneath and electrically insulated from the gate electrode region. The semiconductor structure further includes (d) a first and a second electrically conducting regions, and (e) a first and a second contact regions. The first electrically conducting region and the first source/drain region are in direct physical contact with each other at a first and a second common surfaces. The first and second common surfaces are not coplanar. The first contact region overlaps both the first and second common surfaces.
    • 半导体结构。 半导体结构包括(a)半导体层,(b)栅极电介质区域和(c)栅电极区域。 栅电极区域与半导体层电绝缘。 半导体层包括沟道区,第一和第二源极/漏极区。 沟道区域设置在第一和第二源极/漏极区域之间,并且直接位于栅电极区域下方并与栅电极区域电绝缘。 半导体结构还包括(d)第一和第二导电区域,以及(e)第一和第二接触区域。 第一导电区域和第一源极/漏极区域在第一和第二共同表面处彼此直接物理接触。 第一和第二公共表面不共面。 第一接触区域与第一和第二公共表面重叠。
    • 133. 发明申请
    • STRUCTURE AND METHOD TO FORM MULTILAYER EMBEDDED STRESSORS
    • 形成多层嵌入式应力的结构和方法
    • US20080006818A1
    • 2008-01-10
    • US11423227
    • 2006-06-09
    • Zhijiong LuoRicky S. AmosNivo RovedoHenry K. Utomo
    • Zhijiong LuoRicky S. AmosNivo RovedoHenry K. Utomo
    • H01L31/00H01L29/06
    • H01L29/7848H01L21/26513H01L21/823807H01L21/823814H01L29/1083H01L29/165H01L29/6656H01L29/66636
    • A multilayer embedded stressor having a graded dopant profile for use in a semiconductor structure for inducing strain on a device channel region is provided. The inventive multilayer stressor is formed within areas of a semiconductor structure in which source/drain regions are typically located. The inventive multilayer stressor includes a first conformal epi semiconductor layer that is undoped or lightly doped and a second epi semiconductor layer that is highly dopant relative to the first epi semiconductor layer. The first and second epi semiconductor layers each have the same lattice constant, which is different from that of the substrate they are embedded in. The structure including the inventive multilayer embedded stressor achieves a good balance between stress proximity and short channel effects, and even eliminates or substantially reduces any possible defects that are typically generated during formation of the deep source/drain regions.
    • 提供了具有用于在器件沟道区域上诱发应变的半导体结构中的渐变掺杂物分布的多层嵌入式应力器。 本发明的多层应力器形成在源极/漏极区域通常位于其中的半导体结构的区域内。 本发明的多层应力器包括未掺杂或轻掺杂的第一共形外延半导体层和相对于第一外延半导体层高度掺杂的第二外延半导体层。 第一和第二外延半导体层各自具有相同的晶格常数,其不同于嵌入其中的衬底。包括本发明的多层嵌入式应力器的结构在应力接近和短沟道效应之间实现良好的平衡,甚至消除 或基本上减少在深源/漏区形成期间通常产生的任何可能的缺陷。
    • 134. 发明授权
    • Field effect transistors (FETs) with multiple and/or staircase silicide
    • 具有多个和/或阶梯硅化物的场效应晶体管(FET)
    • US07309901B2
    • 2007-12-18
    • US10908087
    • 2005-04-27
    • Xiangdong ChenSunfei FangZhijiong LuoHaining YangHuilong Zhu
    • Xiangdong ChenSunfei FangZhijiong LuoHaining YangHuilong Zhu
    • H01L21/8232
    • H01L29/7833H01L29/665H01L29/6659
    • A semiconductor structure and method for forming the same. The semiconductor structure comprises a field effect transistor (FET) having a channel region disposed between first and second source/drain (S/D) extension regions which are in turn in direct physical contact with first and second S/D regions, respective. First and second silicide regions are formed such that the first silicide region is in direct physical contact with the first S/D region and the first S/D extension region, whereas the second silicide region is in direct physical contact with the second S/D region and the second S/D extension region. The first silicide region is thinner for regions in contact with first S/D extension region than for regions in contact with the first S/D region. Similarly, the second silicide region is thinner for regions in contact with second S/D extension region than for regions in contact with the second S/D region.
    • 一种半导体结构及其形成方法。 半导体结构包括场效应晶体管(FET),其具有设置在第一和第二源极/漏极(S / D)延伸区域之间的沟道区域,第一和第二源极/漏极(S / D)延伸区域又分别与第一和第二S / D区域直接物理接触。 形成第一和第二硅化物区域,使得第一硅化物区域与第一S / D区域和第一S / D延伸区域直接物理接触,而第二硅化物区域与第二S / D区域直接物理接触 区域和第二S / D扩展区域。 对于与第一S / D延伸区域接触的区域,第一硅化物区域比与第一S / D区域接触的区域更薄。 类似地,对于与第二S / D延伸区域接触的区域,第二硅化物区域比与第二S / D区域接触的区域更薄。
    • 139. 发明授权
    • Self-forming metal silicide gate for CMOS devices
    • 用于CMOS器件的自成型金属硅化物栅极
    • US07105440B2
    • 2006-09-12
    • US10905629
    • 2005-01-13
    • Zhijiong LuoSunfei FangHuilong Zhu
    • Zhijiong LuoSunfei FangHuilong Zhu
    • H01L21/44
    • H01L29/4975H01L21/28097H01L21/823835H01L29/665H01L29/7833
    • A process for forming a metal suicide gate in an FET device, where the suicide is self-forming (that is, formed without the need for a separate metal/silicon reaction step), and no CMP or etchback of the silicon material is required. A first layer of silicon material (polysilicon or amorphous silicon) is formed overlying the gate dielectric; a layer of metal is then formed on the first layer, and a second layer of silicon on the metal layer. A high-temperature (>700° C.) processing step, such as source/drain activation anneal, is subsequently performed; this step is effective to form a silicide layer above the gate dielectric by reaction of the metal with silicon in the first layer. A second high-temperature processing step (such as source/drain silicidation) may be performed which is effective to form a second silicide layer from silicon in the second layer. The thicknesses of the layers are such that in the high-temperature processing, substantially all of the first layer and at least a portion of the second layer are replaced by silicide material. Accordingly, a fully silicided gate structure may be produced.
    • 在FET器件中形成金属硅化物栅极的方法,其中硅化物自成型(即,不需要单独的金属/硅反应步骤形成),并且不需要CMP材料的CMP或回蚀。 第一层硅材料(多晶硅或非晶硅)形成在栅极电介质上方; 然后在第一层上形成金属层,在金属层上形成第二层硅。 随后进行高温(> 700℃)处理步骤,例如源极/漏极激活退火; 该步骤通过金属与第一层中的硅的反应在栅电介质上形成硅化物层是有效的。 可以进行第二高温处理步骤(例如源极/漏极硅化),其有效地从第二层中的硅形成第二硅化物层。 层的厚度使得在高温处理中,基本上所有的第一层和第二层的至少一部分被硅化物材料代替。 因此,可以产生完全硅化的栅极结构。