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    • 5. 发明授权
    • Method of forming dual damascene interconnection using low-k dielectric material
    • 使用低k介电材料形成双镶嵌互连的方法
    • US07022600B2
    • 2006-04-04
    • US10437806
    • 2003-05-14
    • Jae-Hak KimSoo-Geun LeeKi-Kwan ParkKyoung-Woo Lee
    • Jae-Hak KimSoo-Geun LeeKi-Kwan ParkKyoung-Woo Lee
    • H01L21/475
    • H01L21/76811H01L21/76808H01L21/76813
    • In order to avoid a faulty pattern resulting from a photoresist tail being formed due to a step difference of an upper hard mask layer when a dual hard mask layer is used, a planarization layer is formed following patterning of the upper hard mask layer. In this manner, a photoresist pattern is formed without the creation of a photoresist tail. Alternatively, a single hard mask layer and a planarization layer are substituted for the dual lower hard mask layer and an upper hard mask layer, respectively. In this manner, it is therefore possible to form a photoresist pattern without a photoresist tail being formed during photolithographic processes. In order to prevent formation of a facet, the planarization layer is thickly formed or, alternatively, the hard mask layer is etched using the photoresist pattern.
    • 为了避免当使用双硬掩模层时由于上部硬掩模层的阶差而形成的光致抗蚀剂尾部产生的故障图案,在上部硬掩模层的图案化之后形成平坦化层。 以这种方式,形成光致抗蚀剂图案而不产生光致抗蚀剂尾部。 或者,单个硬掩模层和平坦化层分别代替双下硬掩模层和上硬掩模层。 以这种方式,因此可以在光刻工艺期间形成光致抗蚀剂图案而不形成光致抗蚀剂尾部。 为了防止小面的形成,平坦化层被厚地形成,或者使用光致抗蚀剂图案蚀刻硬掩模层。
    • 9. 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。
    • 10. 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。