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    • 5. 发明授权
    • Methods of manufacturing vertical semiconductor devices
    • 制造垂直半导体器件的方法
    • US08697524B2
    • 2014-04-15
    • US13212485
    • 2011-08-18
    • Byung-Kwan YouKwang-Soo SeolYoung-Woo ParkJin-Soo Lim
    • Byung-Kwan YouKwang-Soo SeolYoung-Woo ParkJin-Soo Lim
    • H01L21/336
    • H01L21/28282H01L21/02104H01L27/11582H01L29/7926
    • Methods of manufacturing vertical semiconductor devices may include forming a mold structure including sacrificial layers and insulating interlayers with a first opening formed therethrough. The sacrificial layers and the insulating interlayers may be stacked repeatedly and alternately on a substrate. The first opening may expose the substrate. Blocking layers may be formed by oxidizing portions of the sacrificial layers exposed by the first opening. A first semiconductor layer pattern, a charge trapping layer pattern and a tunnel insulation layer pattern, respectively, may be formed on the sidewall of the first opening. A second semiconductor layer may be formed on the first polysilicon layer pattern and the bottom of the first opening. The sacrificial layers and the insulating interlayers may be partially removed to form a second opening. The sacrificial layers may be removed to form grooves between the insulating interlayers. Control gate electrodes may be formed in the grooves.
    • 制造垂直半导体器件的方法可以包括形成包括牺牲层和绝缘夹层的模具结构,其中形成有第一开口。 牺牲层和绝缘夹层可以重复地和交替地层叠在基板上。 第一开口可能暴露基板。 可以通过氧化由第一开口暴露的牺牲层的部分来形成阻挡层。 分别可以在第一开口的侧壁上形成第一半导体层图案,电荷俘获层图案和隧道绝缘层图案。 可以在第一多晶硅层图案和第一开口的底部上形成第二半导体层。 可以部分去除牺牲层和绝缘夹层以形成第二开口。 可以去除牺牲层以在绝缘夹层之间形成凹槽。 控制栅电极可以形成在凹槽中。