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    • 19. 发明授权
    • Ferroelectric memory device with merged-top-plate structure and method for fabricating the same
    • 具有合并顶板结构的铁电存储器件及其制造方法
    • US07173301B2
    • 2007-02-06
    • US11135767
    • 2005-05-23
    • Eun-Seok ChoiSeung-Jin Yeom
    • Eun-Seok ChoiSeung-Jin Yeom
    • H01L29/76
    • H01L27/11502H01L27/11507H01L28/55H01L28/57H01L28/60H01L28/65H01L28/75
    • The inventive ferroelectric memory device includes: a semiconductor substrate providing elements of a transistor; a first inter-layer insulating layer formed on the semiconductor substrate; a storage node contact connected to elements of the transistor by passing through the first inter-layer insulating layer; a barrier layer contacting simultaneously to the storage node contact and the first inter-layer insulating layer; a lower electrode having a space for isolating the first inter-layer insulating layer and being formed on the barrier layer; a glue layer being formed on the first inter-layer insulating layer and encompassing lateral sides of the lower electrode as filling the space; a second inter-layer insulating layer exposing a surface of the lower electrode and encompassing the glue layer; a ferroelectric layer formed on the glue layer including the second inter-layer insulating layer; and an upper electrode formed on the ferroelectric layer.
    • 本发明的铁电存储器件包括:提供晶体管元件的半导体衬底; 形成在所述半导体基板上的第一层间绝缘层; 通过穿过所述第一层间绝缘层而连接到所述晶体管的元件的存储节点接触; 与所述存储节点接触部和所述第一层间绝缘层同时接触的阻挡层; 具有用于隔离所述第一层间绝缘层并形成在所述阻挡层上的空间的下电极; 胶层在第一层间绝缘层上形成,并且在下部电极的横向侧面填充空间; 第二层间绝缘层,暴露下电极的表面并包围胶层; 形成在包括第二层间绝缘层的胶层上的铁电层; 以及形成在强电介质层上的上电极。
    • 20. 发明授权
    • Method for fabricating semiconductor memory device having ferroelectric layer
    • 具有铁电层的半导体存储器件的制造方法
    • US06391660B2
    • 2002-05-21
    • US09891255
    • 2001-06-27
    • Soon-Yong KweonSeung-Jin Yeom
    • Soon-Yong KweonSeung-Jin Yeom
    • H01L2100
    • H01L21/02197H01L21/02271H01L21/0228H01L21/02337H01L21/31683H01L27/11507H01L28/55H01L28/75
    • A method for fabricating a semiconductor memory device is provided which can omit a fabricating step of removing a seed layer. The method for fabricating a semiconductor memory device includes the steps of a) providing a semiconductor structure, wherein the semiconductor structure has an insulating layer formed on a semiconductor substrate; b) forming a seed layer on an insulating layer covering the semiconductor substrate; c) forming a sacrifice layer on the seed layer; d) selectively etching the sacrifice layer to expose the seed layer, thereby defining an opening; e) forming a lower electrode layer on the seed layer disposed within the opening; f) removing the sacrifice layer to expose the lower electrode and a portion of the seed layer not covered by the lower electrode; g) oxidizing the exposed portion of the seed layer to form an insulating layer; and h) sequentially forming a ferroelectric layer and an upper electrode on the lower electrode.
    • 提供了一种用于制造半导体存储器件的方法,其可以省略去除种子层的制造步骤。 半导体存储器件的制造方法包括以下步骤:a)提供半导体结构,其中半导体结构具有在半导体衬底上形成的绝缘层; b)在覆盖半导体衬底的绝缘层上形成晶种层; c)在种子层上形成牺牲层; d)选择性地蚀刻牺牲层以暴露种子层,从而限定开口; e)在设置在开口内的种子层上形成下电极层; f)去除牺牲层以暴露下电极和未被下电极覆盖的种子层的一部分; g)氧化种子层的暴露部分以形成绝缘层; 和h)在下电极上依次形成铁电层和上电极。