Process for fabricating semi-conductive oxide between two poly silicon
gate electrodes
    2.
    发明授权
    Process for fabricating semi-conductive oxide between two poly silicon gate electrodes 失效
    在两个多晶硅栅电极之间制造半导体氧化物的工艺

    公开(公告)号:US4458407A

    公开(公告)日:1984-07-10

    申请号:US481212

    申请日:1983-04-01

    摘要: A process for placing non-continuous Dual Electron Injection Structures (DEIS) between two layers of polysilicon used to form an array of poly devices on an integrated circuit substrate. Separate masks are used to define Poly 1 and Poly 2 devices, respectively. The DEIS structure is disposed above the poly 1 devices. A silicon nitride (Si.sub.3 N.sub.4) layer is used to mask the DEIS structure and prevents it from oxidizing during certain processing steps. A thin layer of poly x is placed between the DEIS structure and the Si.sub.3 N.sub.4. The poly x layer forms a buffer and protects the DEIS during an etching step which removes the Si.sub.3 N.sub.4 layer.

    摘要翻译: 在用于在集成电路基板上形成多晶硅器件阵列的两层多晶硅之间放置非连续双电子注入结构(DEIS)的方法。 分别使用单独的掩模来定义Poly 1和Poly 2器件。 DEIS结构设置在poly 1器件的上方。 氮化硅(Si 3 N 4)层用于掩蔽DEIS结构并防止其在某些加工步骤中氧化。 在DEIS结构和Si3N4之间放置一层薄的多晶x。 在移除Si 3 N 4层的蚀刻步骤中,多层形成缓冲器并保护DEIS。