Precise patterning of high-K films
    1.
    发明授权
    Precise patterning of high-K films 有权
    高K薄膜的精确图案化

    公开(公告)号:US06855639B1

    公开(公告)日:2005-02-15

    申请号:US10632470

    申请日:2003-08-01

    CPC分类号: H01L21/28123 H01L21/31111

    摘要: A high-K thin film patterning solution is disclosed to address structural and process limitations of conventional patterning techniques. Subsequent to formation of gate structures adjacent a high-K dielectric layer, a portion of the high-K dielectric layer material is reduced, preferably via exposure to hydrogen gas, to form a reduced portion of the high-K dielectric layer. The reduced portion may be selectively removed utilizing wet etch chemistries to leave behind a trench of desirable geometric properties.

    摘要翻译: 公开了一种高K薄膜图形解决方案,以解决常规图案化技术的结构和工艺限制。 在与高K电介质层相邻形成栅极结构之后,优选通过暴露于氢气来降低高K电介质层材料的一部分,以形成高K电介质层的减少的部分。 可以使用湿蚀刻化学物质选择性地去除还原部分,以留下所需几何性质的沟槽。