Local interconnect for integrated circuits
    6.
    发明授权
    Local interconnect for integrated circuits 失效
    集成电路的局部互连

    公开(公告)号:US5075761A

    公开(公告)日:1991-12-24

    申请号:US567270

    申请日:1990-08-14

    摘要: A silicide layer, to improve conductivity, is formed over a first layer of polycrystalline silicon, followed by a second layer of polycrystalline silicon. This structure is then patterned to form gate regions over active areas. A layer of metal silicide is formed over the entire surface of the chip, and patterned to form local interconnect. Etching of the second metal silicide layer is stopped by the second polycrystalline silicon layer, thereby protecting the first metal silicide layer from damage.

    摘要翻译: 在第一层多晶硅上形成硅化物层,以提高导电性,随后是第二层多晶硅。 然后将该结构图案化以在有效区域上形成栅极区域。 在芯片的整个表面上形成金属硅化物层,并且被图案化以形成局部互连。 通过第二多晶硅层阻止第二金属硅化物层的蚀刻,从而保护第一金属硅化物层免受损坏。

    Structure and method of forming vias
    9.
    发明授权
    Structure and method of forming vias 失效
    形成通孔的结构和方法

    公开(公告)号:US5847457A

    公开(公告)日:1998-12-08

    申请号:US738040

    申请日:1996-10-24

    IPC分类号: H01L23/522 H01L23/48

    CPC分类号: H01L23/5226 H01L2924/0002

    摘要: A method is provided for forming a contact opening or via of a semiconductor integrated circuit, and an integrated circuit formed according to the same. A first metal region is formed over an underlying region. A first insulating layer is formed over the integrated circuit. A second insulating layer is then formed over the first insulating layer. A portion of the second insulating layer is etched to expose a portion of the first insulating layer wherein the exposed first insulating layer and the remaining second insulating layer form a substantially planar surface. A metal oxide layer is formed over the exposed first insulating layer and the remaining second insulating layer. A photoresist layer is formed and patterned over the metal oxide layer. The metal oxide layer is then selectively etched to form a via exposing a portion of the first insulating layer. The first insulating layer in the via is then selectively etched to expose a portion of the first metal region. The photoresist layer is removed and a second metal layer is then formed over the metal oxide layer and in the via contacting the first metal region.

    摘要翻译: 提供一种用于形成半导体集成电路的接触开口或通路的方法,以及根据该集成电路形成的集成电路。 在下面的区域上形成第一金属区域。 在集成电路上形成第一绝缘层。 然后在第一绝缘层上形成第二绝缘层。 蚀刻第二绝缘层的一部分以暴露第一绝缘层的一部分,其中暴露的第一绝缘层和剩余的第二绝缘层形成基本平坦的表面。 在暴露的第一绝缘层和剩余的第二绝缘层上形成金属氧化物层。 在金属氧化物层上形成并图案化光致抗蚀剂层。 然后选择性地蚀刻金属氧化物层以形成露出第一绝缘层的一部分的通孔。 然后选择性地蚀刻通孔中的第一绝缘层以暴露第一金属区域的一部分。 去除光致抗蚀剂层,然后在金属氧化物层上形成第二金属层,并在通孔中与第一金属区接触。

    Method of forming vias
    10.
    发明授权
    Method of forming vias 失效
    形成通孔的方法

    公开(公告)号:US5593921A

    公开(公告)日:1997-01-14

    申请号:US438167

    申请日:1995-05-09

    摘要: A method is provided for forming a contact opening or via of a semiconductor integrated circuit, and an integrated circuit formed according to the same. A first metal region is formed over an underlying region. A first insulating layer is formed over the integrated circuit. A second insulating layer is then formed over the first insulating layer. A portion of the second insulating layer is etched to expose a portion of the first insulating layer wherein the exposed first insulating layer and the remaining second insulating layer form a substantially planar surface. A metal oxide layer is formed over the exposed first insulating layer and the remaining second insulating layer. A photoresist layer is formed and patterned over the metal oxide layer. The metal oxide layer is then selectively etched to form a via exposing a portion of the first insulating layer. The first insulating layer in the via is then selectively etched to expose a portion of the first metal region. The photoresist layer is removed and a second metal layer is then formed over the metal oxide layer and in the via contacting the first metal region.

    摘要翻译: 提供一种用于形成半导体集成电路的接触开口或通路的方法,以及根据该集成电路形成的集成电路。 在下面的区域上形成第一金属区域。 在集成电路上形成第一绝缘层。 然后在第一绝缘层上形成第二绝缘层。 蚀刻第二绝缘层的一部分以暴露第一绝缘层的一部分,其中暴露的第一绝缘层和剩余的第二绝缘层形成基本平坦的表面。 在暴露的第一绝缘层和剩余的第二绝缘层上形成金属氧化物层。 在金属氧化物层上形成并图案化光致抗蚀剂层。 然后选择性地蚀刻金属氧化物层以形成露出第一绝缘层的一部分的通孔。 然后选择性地蚀刻通孔中的第一绝缘层以暴露第一金属区域的一部分。 去除光致抗蚀剂层,然后在金属氧化物层上形成第二金属层,并在通孔中与第一金属区接触。