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    • 6. 发明授权
    • Method for manufacturing multi-thickness gate dielectric layer of semiconductor device
    • 制造半导体器件多层栅极电介质层的方法
    • US07323420B2
    • 2008-01-29
    • US11652186
    • 2007-01-11
    • Kyung-soo KimYoung-wug KimChang-bong OhHee-sung KangHyuk-ju Ryu
    • Kyung-soo KimYoung-wug KimChang-bong OhHee-sung KangHyuk-ju Ryu
    • H01L21/302
    • H01L29/42368H01L21/28194H01L21/28202H01L21/31116H01L21/31604H01L21/31616H01L21/3185H01L27/11H01L29/513H01L29/517H01L29/518
    • In a method for manufacturing a multi-thickness gate dielectric layer of a semiconductor device, a first dielectric layer is formed on a semiconductor substrate. A second dielectric layer is formed using a different dielectric material from the material constituting the first dielectric layer on the first dielectric layer. A portion of the second dielectric layer is selectively removed so as to selectively expose the first dielectric layer under the second dielectric layer. A portion of the exposed first dielectric layer is selectively removed so as to selectively expose the semiconductor substrate under the exposed first dielectric layer. Thereafter, a third dielectric layer having a thinner thickness than the first dielectric layer is formed on the exposed semiconductor substrate. As a result, a gate dielectric layer is formed to include a thick portion formed of the first dielectric layer and remaining second dielectric layer, a medium-thickness portion formed of the remaining first dielectric layer, and a thin portion formed of the third dielectric layer.
    • 在制造半导体器件的多层栅极电介质层的方法中,在半导体衬底上形成第一介电层。 使用与构成第一电介质层上的第一电介质层的材料不同的电介质材料形成第二电介质层。 选择性地去除第二电介质层的一部分,以选择性地暴露第二介电层下的第一介电层。 选择性地去除暴露的第一介电层的一部分,以便在暴露的第一介电层下选择性地暴露半导体衬底。 此后,在暴露的半导体衬底上形成厚度比第一电介质层薄的第三电介质层。 结果,形成栅极电介质层,包括由第一电介质层和剩余的第二电介质层形成的厚部,由剩余的第一电介质层形成的中等厚度部分和由第三电介质层形成的薄壁部分 。
    • 9. 发明申请
    • Trench isolation methods of semiconductor device
    • 半导体器件的沟槽隔离方法
    • US20060240636A1
    • 2006-10-26
    • US11358454
    • 2006-02-21
    • Hyuk-Ju RyuHeon-Jong ShinHee-Sung KangChoong-Ryul RyouMu-Kyeng JungKyung-Soo Kim
    • Hyuk-Ju RyuHeon-Jong ShinHee-Sung KangChoong-Ryul RyouMu-Kyeng JungKyung-Soo Kim
    • H01L21/76
    • H01L21/76237H01L21/76224H01L21/823878
    • In a trench isolation method, a semiconductor substrate having an N-MOS region and a P-MOS region is prepared. A first mask pattern exposing an N-MOS field region is formed on the N-MOS region, and a second mask pattern exposing a P-MOS field region is formed on the P-MOS region. A first photoresist pattern is formed to cover the P-MOS region and expose the N-MOS region. First impurity ions are implanted into the N-MOS region, using the first mask pattern and the first photoresist pattern as ion implantation masks, thereby forming a first impurity layer in the N-MOS field region. In this case, a portion of the first impurity layer is formed to extend below the first mask pattern. The first photoresist pattern is removed. The semiconductor substrate is etched using the first and second mask patterns as etch masks, thereby forming trenches in the N-MOS field region and the P-MOS field region and concurrently, forming a first impurity pattern of the first impurity layer remaining below the first mask pattern. A trench isolation layer filling the trenches is then formed.
    • 在沟槽隔离方法中,制备具有N-MOS区和P-MOS区的半导体衬底。 在N-MOS区形成露出N-MOS场区的第一掩模图案,在P-MOS区形成露出P-MOS场区的第二掩模图案。 形成第一光致抗蚀剂图案以覆盖P-MOS区域并暴露N-MOS区域。 使用第一掩模图案和第一光致抗蚀剂图案作为离子注入掩模将第一杂质离子注入到N-MOS区域中,从而在N-MOS场区域中形成第一杂质层。 在这种情况下,第一杂质层的一部分形成为延伸到第一掩模图案的下方。 去除第一光致抗蚀剂图案。 使用第一和第二掩模图案作为蚀刻掩模蚀刻半导体衬底,从而在N-MOS场区和P-MOS场区中形成沟槽,同时,形成第一杂质图案的第一杂质图案保留在第一 掩模图案。 然后形成填充沟槽的沟槽隔离层。
    • 10. 发明授权
    • Method of fabricating semiconductor device having notched gate
    • 制造具有开槽栅极的半导体器件的方法
    • US06858907B2
    • 2005-02-22
    • US10114214
    • 2002-04-02
    • Hyuk-Ju RyuYoung-Gun Ko
    • Hyuk-Ju RyuYoung-Gun Ko
    • H01L21/338H01L21/28H01L21/336H01L29/49H01L29/78H01L21/02
    • H01L29/4983H01L21/28114H01L21/28123H01L29/6659H01L29/66598H01L29/7833
    • A semiconductor device includes: a silicon substrate; a source/drain region formed in the substrate including a lightly doped region and an adjacent heavily doped region, the depth of the heavily doped region being greater than the depth of the lightly doped region; a gate oxide layer on the silicon substrate; and a notched gate electrode on the substrate, the notched gate electrode including a notch along an outer side surface of a lower portion such that a top portion of the notched gate electrode is wider than the lower portion, the gate oxide layer extending between the interface of the notched gate electrode and the substrate, and a gate poly oxide layer provided along an outer side surface of the notched gate electrode and along an inner wall of the notch, a portion of the lightly doped region being under the notch.
    • 半导体器件包括:硅衬底; 形成在所述衬底中的源极/漏极区域,所述源极/漏极区域包括轻掺杂区域和相邻重掺杂区域,所述重掺杂区域的深度大于所述轻掺杂区域的深度; 硅衬底上的栅氧化层; 以及在基板上的缺口栅电极,所述带槽栅电极具有沿着下部的外侧面的切口,使得所述有槽栅电极的顶部比所述下部宽,所述栅极氧化物层在所述界面 的栅极电极和衬底,以及沿着切口栅电极的外侧表面并沿着凹口的内壁设置的栅极多氧化物层,所述轻掺杂区域的一部分位于所述凹口下方。