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    • 65. 发明申请
    • MANUFACTURABLE HIGH-K DRAM MIM CAPACITOR STRUCTURE
    • 可制造的高K DRAM MIM电容结构
    • US20130330903A1
    • 2013-12-12
    • US13494808
    • 2012-06-12
    • Sandra MalhotraWim DeweerdOde Hiroyuki
    • Sandra MalhotraWim DeweerdOde Hiroyuki
    • H01L21/02
    • H01L28/56H01L27/10852H01L28/60H01L28/90
    • A method for forming a capacitor stack is described. In some embodiments of the present invention, a first dielectric material is formed above a first electrode material. The first electrode material is rigid and has good mechanical strength and serves as a robust frame for the capacitor stack. The first dielectric material is sufficiently thin ( 3 nm) or lightly doped or non-doped so that it crystallizes after subsequent anneal treatments. A second electrode material is formed adjacent to the second dielectric material. The second electrode material has a high work function and a crystal structure that serves to promote the formation of the high k-value crystal structure of the second dielectric material.
    • 描述形成电容器堆叠的方法。 在本发明的一些实施例中,第一电介质材料形成在第一电极材料之上。 第一电极材料是刚性的并且具有良好的机械强度并且用作用于电容器叠层的坚固框架。 第一介电材料足够薄( 3nm)或轻掺杂或未掺杂,使得其在随后的退火处理之后结晶。 与第二电介质材料相邻地形成第二电极材料。 第二电极材料具有高功函数和用于促进形成第二电介质材料的高k值晶体结构的晶体结构。