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    • 10. 发明申请
    • VARIABLE RESISTANCE MEMORY DEVICE, METHOD OF FABRICATING THE SAME, AND MEMORY SYSTEM INCLUDING THE SAME
    • 可变电阻存储器件,其制造方法和包括其的存储器系统
    • US20100124800A1
    • 2010-05-20
    • US12617754
    • 2009-11-13
    • Jeonghee ParkSunglae ChoYongho HaHyun-Suk Kwon
    • Jeonghee ParkSunglae ChoYongho HaHyun-Suk Kwon
    • H01L21/06
    • H01L45/06H01L27/2463H01L45/1233H01L45/143H01L45/144H01L45/1683
    • A method of fabricating a variable resistance memory device includes a plasma etching process to remove contaminants from variable resistance material that forms variable resistance elements of the device. Bottom electrodes are formed on a semiconductor substrate. Next, an interlayer dielectric layer having trenches that expose the bottom electrodes is formed on the substrate. Then a layer of variable resistance material is formed. The variable resistance material covers the interlayer dielectric layer and fills the trenches. The variable resistance material is then planarized down to at least the top surface of the interlayer dielectric layer, thereby leaving elements of the variable resistance material in the trenches. The variable resistance material in the trenches is etched to remove contaminants, produced as a result of the planarizing process, from atop the variable resistance material in the trenches. A top electrode is then formed on the variable resistance material.
    • 制造可变电阻存储器件的方法包括等离子体蚀刻工艺,以从形成该器件的可变电阻元件的可变电阻材料中除去污染物。 底电极形成在半导体衬底上。 接下来,在基板上形成具有露出底部电极的沟槽的层间电介质层。 然后形成一层可变电阻材料。 可变电阻材料覆盖层间电介质层并填充沟槽。 然后将可变电阻材料平坦化到至少层间电介质层的顶表面,从而将可变电阻材料的元件留在沟槽中。 蚀刻沟槽中的可变电阻材料,以从沟槽中的可变电阻材料的顶部去除作为平坦化处理的结果产生的污染物。 然后在可变电阻材料上形成顶部电极。