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    • 104. 发明授权
    • Container capacitor structure and method of formation thereof
    • 集装箱电容器结构及其形成方法
    • US07625795B2
    • 2009-12-01
    • US11217742
    • 2005-09-01
    • D. Mark DurcanTrung T. DoanRoger R. LeeFernando GonzalezEr-Xuan Ping
    • D. Mark DurcanTrung T. DoanRoger R. LeeFernando GonzalezEr-Xuan Ping
    • H01L21/8242
    • H01L28/91H01L27/10811H01L27/10817H01L27/10852H01L27/10888H01L28/65Y10S257/905
    • Container capacitor structure and method of construction. An etch mask and etch are used to expose portions of an exterior surface of an electrode (“bottom electrodes”) of the structure. The etch provides a recess between proximal pairs of container capacitor structures, which is available for forming additional capacitance. A capacitor dielectric and top electrode are formed on and adjacent to, respectively, both an interior surface and portions of the exterior surface of the first electrode. Surface area common to both the first electrode and second electrodes is increased over using only the interior surface, providing additional capacitance without decreasing spacing for clearing portions of the capacitor dielectric and the second electrode away from a contact hole location. Clearing of the capacitor dielectric and the second electrode portions may be done at an upper location of a substrate assembly in contrast to clearing at a bottom location of a contact via.
    • 集装箱电容器结构及其施工方法。 蚀刻掩模和蚀刻用于暴露结构的电极(“底部电极”)的外表面的部分。 蚀刻在容器电容器结构的近端对之间提供凹槽,其可用于形成额外的电容。 电容器电介质和顶电极分别形成在第一电极的内表面和外表面的两个部分上并与其相邻。 第一电极和第二电极两者共同的表面积仅通过使用内表面增加,提供额外的电容而不减小用于清除电容器电介质部分和第二电极远离接触孔位置的间隔。 电容器电介质和第二电极部分的清除可以在衬底组件的上部位置进行,与在接触通孔的底部位置处的清除相反。
    • 108. 发明授权
    • Semiconductor device having integrated circuit contact
    • 具有集成电路接触的半导体器件
    • US07315082B2
    • 2008-01-01
    • US10443471
    • 2003-05-22
    • Charles H. DennisonTrung T. Doan
    • Charles H. DennisonTrung T. Doan
    • H01L23/48
    • H01L21/31144H01L21/76807H01L21/76808H01L21/76829Y10S438/95Y10S438/97
    • A process for forming vertical contacts in the manufacture of integrated circuits, and devices so manufactured, is disclosed. The process eliminates the need for precise mask alignment and allows the etch of the contact hole to be controlled independent of the etch of the interconnect trough. The process includes the steps of: forming an insulating layer on the surface of a substrate; forming an etch stop layer on the surface of the insulating layer; forming an opening in the etch stop layer; etching to a first depth through the opening in the etch stop layer and into the insulating layer to form an interconnect trough; forming a photoresist mask on the surface of the etch stop layer and in the trough; and continuing to etch through the insulating layer until reaching the surface of the substrate to form a contact hole. The above process may be repeated one or more times during the formation of multilevel metal integrated circuits.
    • 公开了一种用于在集成电路的制造中形成垂直触点的工艺以及如此制造的器件。 该过程消除了对精确掩模对准的需要,并允许独立于互连槽的蚀刻来控制接触孔的蚀刻。 该方法包括以下步骤:在衬底的表面上形成绝缘层; 在绝缘层的表面上形成蚀刻停止层; 在蚀刻停止层中形成开口; 蚀刻到穿过蚀刻停止层中的开口的第一深度并进入绝缘层以形成互连槽; 在蚀刻停止层和槽中的表面上形成光致抗蚀剂掩模; 并且继续蚀刻通过绝缘层直到到达衬底的表面以形成接触孔。 在形成多级金属集成电路期间,可以重复上述过程一次或多次。