-
公开(公告)号:US20120068147A1
公开(公告)日:2012-03-22
申请号:US13304187
申请日:2011-11-23
申请人: Jen-Chi CHUANG , Ming-Jeng HUANG , Chien-Min LEE , Jia-Yo LIN , Min-Chih WANG
发明人: Jen-Chi CHUANG , Ming-Jeng HUANG , Chien-Min LEE , Jia-Yo LIN , Min-Chih WANG
IPC分类号: H01L47/00
CPC分类号: H01L45/1233 , H01L45/06 , H01L45/126 , H01L45/144 , H01L45/1683
摘要: A method for forming a phase change memory device is disclosed. A substrate with a bottom electrode thereon is provided. A heating electrode and a dielectric layer are formed on the bottom electrode, wherein the heating electrode is surrounded by the dielectric layer. The heating electrode is etched to form recess in the dielectric layer. A phase change material is deposited on the dielectric layer, filling into the recess. The phase change material is polished to remove a portion of the phase change material exceeding the surface of the dielectric layer and a phase change layer is formed confined in the recess of the dielectric layer. A top electrode is formed on the phase change layer and the dielectric layer.
摘要翻译: 公开了一种形成相变存储器件的方法。 提供具有底部电极的基板。 在底部电极上形成加热电极和电介质层,其中加热电极被电介质层包围。 蚀刻加热电极以在电介质层中形成凹陷。 相变材料沉积在介电层上,填充到凹槽中。 抛光相变材料以除去超过介电层表面的一部分相变材料,并将相变层限制在电介质层的凹槽中。 在相变层和电介质层上形成顶部电极。