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    • 3. 发明授权
    • Method of forming dual damascene metal interconnection employing sacrificial metal oxide layer
    • 使用牺牲金属氧化物层形成双镶嵌金属互连的方法
    • US07064059B2
    • 2006-06-20
    • US10939930
    • 2004-09-13
    • Jae-Hak KimYoung-Joon MoonKyoung-Woo LeeJeong-Wook Hwang
    • Jae-Hak KimYoung-Joon MoonKyoung-Woo LeeJeong-Wook Hwang
    • H01L21/4763H01L21/311H01L21/302H01L21/461
    • H01L21/76808H01L21/31144
    • There is provided a method of forming a dual damascene metal interconnection by employing a sacrificial metal oxide layer. The method includes preparing a semiconductor substrate. An interlayer insulating layer is formed on the semiconductor substrate, and a preliminary via hole is formed by patterning the interlayer insulating layer. A sacrificial via protecting layer is formed on the semiconductor substrate having the preliminary via hole to fill the preliminary via hole, and cover an upper surface of the interlayer insulating layer. A sacrificial metal oxide layer is formed on the sacrificial via protecting layer, the sacrificial metal oxide layer is patterned to form a sacrificial metal oxide pattern having an opening crossing over the preliminary via hole, and exposing the sacrificial via protecting layer. The sacrificial via protecting layer and the interlayer insulating layer are etched using the sacrificial metal oxide pattern as an etch mask to form a trench located inside the interlayer insulating layer.
    • 提供了通过使用牺牲金属氧化物层形成双镶嵌金属互连的方法。 该方法包括制备半导体衬底。 在半导体基板上形成层间绝缘层,通过图案化层间绝缘层形成预备通孔。 在具有初步通孔的半导体衬底上形成牺牲通孔保护层以填充预通孔,并覆盖层间绝缘层的上表面。 在牺牲通路保护层上形成牺牲金属氧化物层,对牺牲金属氧化物层进行图案化以形成具有穿过预通孔的开口的牺牲金属氧化物图案,并且将牺牲通过保护层曝光。 使用牺牲金属氧化物图案作为蚀刻掩模蚀刻牺牲通过保护层和层间绝缘层,以形成位于层间绝缘层内部的沟槽。
    • 4. 发明申请
    • Method of forming dual damascene metal interconnection employing sacrificial metal oxide layer
    • 使用牺牲金属氧化物层形成双镶嵌金属互连的方法
    • US20050124149A1
    • 2005-06-09
    • US10939930
    • 2004-09-13
    • Jae-Hak KimYoung-Joon MoonKyoung-Woo LeeJeong-Wook Hwang
    • Jae-Hak KimYoung-Joon MoonKyoung-Woo LeeJeong-Wook Hwang
    • H01L21/28H01L21/311H01L21/768H01L21/4763H01L21/44
    • H01L21/76808H01L21/31144
    • There is provided a method of forming a dual damascene metal interconnection by employing a sacrificial metal oxide layer. The method includes preparing a semiconductor substrate. An interlayer insulating layer is formed on the semiconductor substrate, and a preliminary via hole is formed by patterning the interlayer insulating layer. A sacrificial via protecting layer is formed on the semiconductor substrate having the preliminary via hole to fill the preliminary via hole, and cover an upper surface of the interlayer insulating layer. A sacrificial metal oxide layer is formed on the sacrificial via protecting layer, the sacrificial metal oxide layer is patterned to form a sacrificial metal oxide pattern having an opening crossing over the preliminary via hole, and exposing the sacrificial via protecting layer. The sacrificial via protecting layer and the interlayer insulating layer are etched using the sacrificial metal oxide pattern as an etch mask to form a trench located inside the interlayer insulating layer.
    • 提供了通过使用牺牲金属氧化物层形成双镶嵌金属互连的方法。 该方法包括制备半导体衬底。 在半导体基板上形成层间绝缘层,通过图案化层间绝缘层形成预备通孔。 在具有初步通孔的半导体衬底上形成牺牲通孔保护层以填充预通孔,并覆盖层间绝缘层的上表面。 在牺牲通路保护层上形成牺牲金属氧化物层,对牺牲金属氧化物层进行图案化以形成具有穿过预通孔的开口的牺牲金属氧化物图案,并且将牺牲通过保护层曝光。 使用牺牲金属氧化物图案作为蚀刻掩模蚀刻牺牲通过保护层和层间绝缘层,以形成位于层间绝缘层内部的沟槽。