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    • 7. 发明申请
    • STRUCTURE AND METHOD TO IMPROVE MOSFET RELIABILITY
    • 提高MOSFET可靠性的结构和方法
    • US20090176351A1
    • 2009-07-09
    • US11969280
    • 2008-01-04
    • HUILONG ZHUTai-chi SuYing Li
    • HUILONG ZHUTai-chi SuYing Li
    • H01L21/322
    • H01L21/265H01L21/3221H01L29/7833
    • A method embodiment deposits a dielectric layer over a transistor and then implants a gettering agent into the dielectric layer. The insulating layer into which the gettering agent is implanted comprises a single continuous insulating layer and is the insulating layer that borders the next layer of metallization. After this dielectric layer is formed, standard contacts (tungsten) are formed through the insulating layer to the source, drain, gate, etc. of the transistor. Additionally, reactive ion etching of the contacts is performed. The reactive ion etching process can create mobile ions; however, the gettering agent traps the mobile ions and prevents the mobile ions from contaminating the transistor.
    • 方法实施例将电介质层沉积在晶体管上,然后将吸杂剂注入电介质层。 吸附剂注入的绝缘层包括单个连续绝缘层,并且是与下一层金属化接触的绝缘层。 在形成该电介质层之后,通过绝缘层到晶体管的源极,漏极,栅极等形成标准触点(钨)。 此外,进行触点的反应离子蚀刻。 反应离子蚀刻工艺可以产生移动离子; 然而,吸气剂捕获移动离子并防止移动离子污染晶体管。