Method of planarization using selecting curing of SOG layer
    42.
    发明授权
    Method of planarization using selecting curing of SOG layer 失效
    使用SOG层选择性固化的平面化方法

    公开(公告)号:US06368906B1

    公开(公告)日:2002-04-09

    申请号:US09209317

    申请日:1998-12-09

    IPC分类号: H01L218242

    摘要: A method for planarizing an interlayer dielectric layer formed on a semiconductor substrate having a step, using wet etch, by depositing first and second layers on the semiconductor substrate and selectively curing the second layer in the lower area using electron beams (E-beams). The second layer, e.g., an SOG layer formed of HSQ, has a lower etch rate during the wet etch in the cured area, to thereby easily planarize the substrate of the interlayer dielectric layer.

    摘要翻译: 一种使半导体衬底上形成的层间电介质层平坦化的方法,该层间绝缘层具有通过在半导体衬底上沉积第一层和第二层并使用电子束(E-beam)选择性地固化下部区域中的第二层的步骤。 第二层,例如由HSQ形成的SOG层在固化区域的湿蚀刻期间具有较低的蚀刻速率,从而容易地平坦化层间电介质层的衬底。

    Method of forming a metal wiring by a dual damascene process using a photosensitive polymer

    公开(公告)号:US06294315B2

    公开(公告)日:2001-09-25

    申请号:US09765529

    申请日:2001-01-19

    IPC分类号: G03F726

    摘要: A method of forming a metal wiring using a dual damascene process is provided. A photosensitive polymer having low permittivity is used as an etch mask. Though the etch mask remains in the final structure, its low permittivity reduces parasitic capacitance effects. In this method, a photosensitive polymer pattern having a first hole with a first width is formed on a first interlayer dielectric film. A second interlayer dielectric film is formed on the photosensitive polymer pattern. A mask pattern, having a second hole, above the first hole, with a second width larger than the first width, is formed on the second interlayer dielectric film. A wiring region is formed by dry-etching the second interlayer dielectric film using the mask pattern as an etch mask. A via hole region is formed by dry-etching the first interlayer dielectric film using the photosensitive polymer pattern as an etch mask.

    Method for metalization by dual damascene process using photosensitive polymer
    44.
    发明授权
    Method for metalization by dual damascene process using photosensitive polymer 有权
    使用光敏聚合物的双镶嵌工艺金属化方法

    公开(公告)号:US06218079B1

    公开(公告)日:2001-04-17

    申请号:US09350806

    申请日:1999-07-09

    IPC分类号: G03F726

    摘要: A method of forming a metal wiring using a dual damascene process is provided. A photosensitive polymer having low permittivity is used as an etch mask. Though the etch mask remains in the final structure, its low permittivity reduces parasitic capacitance effects. In this method, a photosensitive polymer pattern having a first hole with a first width is formed on a first interlayer dielectric film. A second interlayer dielectric film is formed on the photosensitive polymer pattern. A mask pattern, having a second hole, above the first hole, with a second width larger than the first width, is formed on the second interlayer dielectric film. A wiring region is formed by dry-etching the second interlayer dielectric film using the mask pattern as an etch mask. A via hole region is formed by dry-etching the first interlayer dielectric film using the photosensitive polymer pattern as an etch mask.

    摘要翻译: 提供了一种使用双镶嵌工艺形成金属布线的方法。 使用具有低介电常数的光敏聚合物作为蚀刻掩模。 尽管蚀刻掩模保留在最终结构中,但其低介电常数降低了寄生电容效应。 在该方法中,在第一层间电介质膜上形成具有第一宽度的第一孔的光敏聚合物图案。 在光敏聚合物图案上形成第二层间绝缘膜。 在第二层间电介质膜上形成具有第二孔的第一孔的上方具有大于第一宽度的第二宽度的掩模图案。 通过使用掩模图案作为蚀刻掩模对第二层间电介质膜进行干蚀刻来形成布线区域。 通过使用光敏聚合物图案作为蚀刻掩模对第一层间电介质膜进行干蚀刻来形成通孔区域。