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    • 9. 发明授权
    • Etching solution, method of forming a pattern using the same, method of manufacturing a multiple gate oxide layer using the same and method of manufacturing a flash memory device using the same
    • 蚀刻溶液,使用其形成图案的方法,使用该方法制造多栅极氧化物层的方法以及使用其制造闪存器件的方法
    • US07579284B2
    • 2009-08-25
    • US11482773
    • 2006-07-10
    • Byoung-Moon YoonJi-Hong KimYong-Sun KoKyung-Hyun Kim
    • Byoung-Moon YoonJi-Hong KimYong-Sun KoKyung-Hyun Kim
    • H01L21/311
    • C09K13/04H01L21/32134
    • Example embodiments of the present invention relate to an etching solution, a method of forming a pattern using the same, a method of manufacturing a multiple gate oxide layer using the same and a method of manufacturing a flash memory device using the same. Other example embodiments of the present invention relate to an etching solution having an etching selectivity between a polysilicon layer and an oxide layer, a method of forming a pattern using an etching solution using the same, a method of manufacturing a multiple gate oxide layer using the same, and a method of manufacturing a flash memory device using the same. An etching solution including hydrogen peroxide (H2O2) and ammonium hydroxide (NH4OH) by a volume ratio of about 1:2 to about 1:10 mixed in water. In a method of forming a pattern and methods of manufacturing a multiple gate oxide layer and a flash memory device, a polysilicon layer may be formed on a substrate. An insulation layer pattern including an opening exposing the polysilicon layer may be formed on the polysilicon layer. The polysilicon layer exposed by the insulation layer pattern may be etched using the etching solution. A polysilicon layer pattern may be formed on the substrate using the etching solution.
    • 本发明的示例性实施例涉及一种蚀刻溶液,使用该方法形成图案的方法,使用该蚀刻溶液的多栅极氧化物层的制造方法以及使用其制造闪存器件的方法。 本发明的其它示例性实施例涉及在多晶硅层和氧化物层之间具有蚀刻选择性的蚀刻溶液,使用其使用蚀刻溶液形成图案的方法,使用该栅极氧化物层的方法 以及使用其制造闪存器件的方法。 包含在水中混合的体积比为约1:2至约1:10的过氧化氢(H 2 O 2)和氢氧化铵(NH 4 OH)的蚀刻溶液。 在形成图案的方法和制造多栅极氧化物层和闪存器件的方法中,可以在衬底上形成多晶硅层。 可以在多晶硅层上形成包括露出多晶硅层的开口的绝缘层图案。 可以使用蚀刻溶液蚀刻由绝缘层图案暴露的多晶硅层。 可以使用蚀刻溶液在衬底上形成多晶硅层图案。
    • 10. 发明授权
    • Methods of forming non-volatile memory devices having floating gate electrodes
    • 形成具有浮动栅电极的非易失性存储器件的方法
    • US07445997B2
    • 2008-11-04
    • US11103069
    • 2005-04-11
    • Won-Jun LeeTae-Hyun KimYong-Sun KoKyung-Hyun KimByoung-Moon YoonJi-Hong Kim
    • Won-Jun LeeTae-Hyun KimYong-Sun KoKyung-Hyun KimByoung-Moon YoonJi-Hong Kim
    • H01L21/336
    • H01L27/115H01L27/11521
    • Methods of forming non-volatile memory devices include the steps of forming a semiconductor substrate having first and second floating gate electrodes thereon and an electrically insulating region extending between the first and second floating gate electrodes. A step is then performed to etch back the electrically insulating region to expose upper corners of the first and second floating gate electrodes. Another etching step is then performed. This etching step includes exposing upper surfaces and the exposed upper corners of the first and second floating gate electrodes to an etchant that rounds the exposed upper corners of the first and second floating gate electrodes. The step of etching back the electrically insulating region includes etching back the electrically insulating region to expose sidewalls of the first and second floating gate electrodes having heights ranging from about 30 Å to about 200 Å. The step of exposing the upper corners of the first and second floating gate electrodes to an etchant is followed by the step of etching back the electrically insulating region to expose entire sidewalls of the first and second floating gate electrodes.
    • 形成非易失性存储器件的方法包括以下步骤:在其上形成具有第一和第二浮栅的半导体衬底和在第一和第二浮栅之间延伸的电绝缘区。 然后执行步骤以回蚀电绝缘区域以暴露第一和第二浮栅电极的上角。 然后执行另一蚀刻步骤。 该蚀刻步骤包括将第一和第二浮栅电极的上表面和暴露的上角露出到蚀刻剂,该蚀刻剂围绕第一和第二浮栅的暴露的上角。 蚀刻回电绝缘区域的步骤包括蚀刻电绝缘区域以暴露第一和第二浮栅电极的侧壁,其高度范围为约至约200。 将第一和第二浮栅的上角暴露于蚀刻剂的步骤之后是蚀刻电绝缘区以暴露第一和第二浮栅的整个侧壁的步骤。