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    • 3. 发明授权
    • Method of forming recessed thin film landing pad structure
    • 形成凹陷薄膜着陆垫结构的方法
    • US06500751B2
    • 2002-12-31
    • US09772205
    • 2001-01-29
    • Richard Philip SurprenantEdward Sumner BegleNancy Wagner HannonMathias Pierre Jeanneret
    • Richard Philip SurprenantEdward Sumner BegleNancy Wagner HannonMathias Pierre Jeanneret
    • H01L214763
    • H01L23/5226H01L21/76895H01L23/528H01L2924/0002H01L2924/00
    • A multilayer thin film via landing pad structure includes a thin film conductor structure with a recessed landing pad formed between an upper layer of polyimide dielectric and a lower layer of polyimide dielectric. A multilayer thin film via landing pad structure is formed on a lower layer of dielectric having a top surface. A depression is formed in the top surface of the lower layer of dielectric. The depression has a bottom within the lower layer. A recessed landing pad comprising a conductor is formed in the depression on the surface of the lower layer of dielectric. A conductor line is formed on the lower layer of dielectric in contact with the recessed landing pad. An upper layer of dielectric is formed over the lower layer of dielectric, the thin film conductor line and the recessed landing pad. A conductive via is formed extending through the upper layer of dielectric into contact with the recessed landing pad. Both the recess and the via are formed by laser ablation with the identical mask and laser ablation tool.
    • 多层薄膜通过着陆垫结构包括薄膜导体结构,其具有形成在聚酰亚胺电介质的上层和聚酰亚胺电介质的下层之间的凹陷的着陆垫。 在具有顶表面的电介质的下层上形成多层薄膜通过着陆焊盘结构。 凹陷形成在电介质下层的顶表面。 凹陷在下层内有一个底部。 在电介质的下层的表面的凹部中形成包括导体的凹陷的着陆板。 在与凹陷的着陆垫接触的电介质的下层上形成导体线。 电介质的上层形成在电介质的下层,薄膜导体线和凹陷的着陆垫上。 导电通孔形成为延伸穿过电介质的上层与凹陷的着陆垫接触。 通过使用相同的掩模和激光烧蚀工具的激光烧蚀来形成凹部和通孔。