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    • 14. 发明授权
    • Method of making memory wordline hard mask extension
    • 制作内存字线硬掩模扩展的方法
    • US06479348B1
    • 2002-11-12
    • US10109516
    • 2002-08-27
    • Tazrien KamalMinh Van NgoMark T. RamsbeyJeffrey ShieldsJean Y. YangEmmanuil LingunisHidehiko ShiraiwaAngela T. Hui
    • Tazrien KamalMinh Van NgoMark T. RamsbeyJeffrey ShieldsJean Y. YangEmmanuil LingunisHidehiko ShiraiwaAngela T. Hui
    • H01L218247
    • H01L27/11568H01L27/115
    • A manufacturing method is provided for an integrated circuit memory with closely spaced wordlines formed by using hard mask extensions. A charge-trapping dielectric material is deposited over a semiconductor substrate and first and second bitlines are formed therein. A wordline material and a hard mask material are deposited over the wordline material. A photoresist material is deposited over the hard mask material and is processed to form a patterned photoresist material. The hard mask material is processed using the patterned photoresist material to form a patterned hard mask material. The patterned photoresist is then removed. A hard mask extension material is deposited over the wordline material and is processed to form a hard mask extension. The wordline material is processed using the patterned hard mask material and the hard mask extension to form a wordline, and the patterned hard mask material and the hard mask extension are then removed.
    • 提供了一种用于通过使用硬掩模延伸部形成的具有紧密间隔的字线的集成电路存储器的制造方法。 在半导体衬底上沉积电荷俘获电介质材料,并在其中形成第一和第二位线。 字线材料和硬掩模材料沉积在字线材料上。 光致抗蚀剂材料沉积在硬掩模材料上并被处理以形成图案化的光致抗蚀剂材料。 使用图案化的光致抗蚀剂材料处理硬掩模材料以形成图案化的硬掩模材料。 然后去除图案化的光致抗蚀剂。 硬掩模延伸材料沉积在字线材料上并被处理以形成硬掩模延伸部。 使用图案化的硬掩模材料和硬掩模延伸部来处理字线材料以形成字线,然后去除图案化的硬掩模材料和硬掩模延伸部。