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    • 57. 发明授权
    • Method of forming a node contact hole on a semiconductor wafer
    • 在半导体晶片上形成节点接触孔的方法
    • US06277685B1
    • 2001-08-21
    • US09421261
    • 1999-10-20
    • Benjamin Szu-Min LinJung-Chao ChiouChin-Hui LeeChuan-Fu Wang
    • Benjamin Szu-Min LinJung-Chao ChiouChin-Hui LeeChuan-Fu Wang
    • H01L218242
    • H01L27/10855H01L21/76802H01L21/76831H01L21/76895H01L21/76897
    • The present invention provides a method of forming a node contact hole on a semiconductor wafer. The semiconductor wafer comprises a silicon substrate, a first dielectric layer positioned on the silicon substrate, two bit lines positioned on the first dielectric layer which form a first groove between the two bit lines and the surface of the first dielectric layer, and a second dielectric layer positioned on each of the two bit lines. A lithographic process is performed to form a photoresist layer on the second dielectric layer with at least one second groove extending down to the second dielectric layer wherein the second groove is positioned above the first groove and is perpendicular to the first groove. An etching process is performed along the second groove of the photoresist layer to remove the second dielectric layer and the first dielectric layer under the second groove down to the surface of the silicon substrate so as to approximately form the node contact hole. Finally, a spacer is formed using an insulating material on the walls of the node contact hole to complete the node contact hole. The spacer completely covers the walls of the two bit lines within the node contact hole but the surface of the silicon substrate exposed at the bottom of the node contact hole is not completely covered by the spacer.
    • 本发明提供一种在半导体晶片上形成节点接触孔的方法。 半导体晶片包括硅衬底,位于硅衬底上的第一电介质层,位于第一电介质层上的两个位线,其在两个位线之间形成第一沟槽和第一电介质层的表面;以及第二电介质 层位于两个位线中的每一个上。 执行平版印刷工艺以在第二介电层上形成光致抗蚀剂层,其中至少一个第二凹槽向下延伸到第二介电层,其中第二凹槽位于第一凹槽的上方并且垂直于第一凹槽。 沿着光致抗蚀剂层的第二凹槽进行蚀刻处理,以将第二介电层和第二凹槽下的第一介电层向下移动到硅衬底的表面,以便大致形成节点接触孔。 最后,在节点接触孔的壁上使用绝缘材料形成间隔物,以完成节点接触孔。 间隔件完全覆盖节点接触孔内的两个位线的壁,但是在节点接触孔的底部露出的硅衬底的表面不完全被间隔件覆盖。
    • 58. 发明授权
    • Method of forming an opening in a dielectric layer through a photoresist
layer with silylated sidewall spacers
    • 通过具有甲硅烷化侧壁间隔物的光致抗蚀剂层在电介质层中形成开口的方法
    • US6100014A
    • 2000-08-08
    • US199883
    • 1998-11-24
    • Benjamin Szu-Min LinKun-Chi Lin
    • Benjamin Szu-Min LinKun-Chi Lin
    • G03F7/40G03F7/00
    • G03F7/405G03F7/40
    • A semiconductor fabrication method is provided for forming an opening in a dielectric layer, which can help downsize the critical dimension of the resulting opening through the use of a photoresist layer with silylated sidewall spacers. By this method, the first step is to coat a base photoresist layer over the dielectric layer. Next, a photolithographic process is performed to remove a selected part of the base photoresist layer. Then, a conformational coating process is performed to coat a silylatable photoresist layer over the base photoresist layer to a controlled predefined thickness. Subsequently, a silylation process is performed on the silylatable photoresist layer so as to form a silylated photoresist layer over all the exposed surfaces of the base photoresist layer. After this, a first etching process is performed on the silylated photoresist layer, with the remaining portions of the silylated photoresist layer serving as silylated sidewall spacers on the base photoresist layer. Then, with the combined structure of the base photoresist layer and the overlying silylated sidewall spacers serving as mask, a second etching process is performed on the dielectric layer to etch away the unmasked part of the dielectric layer to form the intended opening in the dielectric layer.
    • 提供半导体制造方法用于在电介质层中形成开口,这有助于通过使用具有甲硅烷化侧壁间隔物的光致抗蚀剂层来减小所得开口的临界尺寸。 通过该方法,第一步是在介电层上涂覆基底光致抗蚀剂层。 接下来,进行光刻工艺以去除基底光致抗蚀剂层的选定部分。 然后,进行构象涂覆工艺以将基础光致抗蚀剂层上的可甲硅烷化的光致抗蚀剂层涂覆到受控的预定厚度。 随后,对可甲硅烷化的光致抗蚀剂层进行甲硅烷基化处理,以在基底光致抗蚀剂层的所有暴露表面上形成甲硅烷基化的光致抗蚀剂层。 之后,对甲硅烷基化的光致抗蚀剂层进行第一蚀刻工艺,其中甲基化光致抗蚀剂层的其余部分用作基底光致抗蚀剂层上的甲硅烷基化侧壁间隔物。 然后,利用基底光致抗蚀剂层和上覆的甲硅烷基化侧壁间隔物用作掩模的组合结构,对电介质层进行第二蚀刻工艺,以蚀刻掉电介质层的未屏蔽部分以在电介质层中形成预期的开口 。
    • 60. 发明授权
    • Method for fabricating a crown-shaped capacitor
    • 制造冠状电容器的方法
    • US06004845A
    • 1999-12-21
    • US111306
    • 1998-07-07
    • Benjamin Szu-Min LinDer-Yuan Wu
    • Benjamin Szu-Min LinDer-Yuan Wu
    • H01L21/8242H01L27/108
    • H01L27/10852H01L27/10817
    • A method for fabricating crown-shaped a capacitor is provided. The method is comprised of the following steps. First, a dielectric layer is formed on a substrate having a pre-formed field effect transistor, then a contact hole which exposes one of the source/drain regions of the field effect transistor is defined and formed. Then a first conductive layer is formed in the contact hole and on the dielectric layer, a crown-shaped photoresist layer is formed by employing a mask comprising a transmission layer, a partial transmission layer, and a non-transmission layer. Next, the pattern on the photoresist layer is transferred onto the first conductive layer to form a crown-shaped conductive layer. Then, a dielectric film is formed on the top of the crown-shaped conductive layer, and a second conductive layer on the top of the dielectric film.
    • 提供一种用于制造冠状电容器的方法。 该方法包括以下步骤。 首先,在具有预形成的场效应晶体管的基板上形成电介质层,然后形成露出场效应晶体管的源/漏区之一的接触孔。 然后在接触孔和电介质层上形成第一导电层,通过采用包括透射层,部分透射层和非透射层的掩模形成冠状光致抗蚀剂层。 接下来,将光致抗蚀剂层上的图案转印到第一导电层上以形成冠状导电层。 然后,在冠状导电层的顶部形成电介质膜,在电介质膜的顶部形成第二导电层。