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    • 5. 发明申请
    • HOLLOW GST STRUCTURE WITH DIELECTRIC FILL
    • 带电介质填充的空心GST结构
    • WO2011002705A2
    • 2011-01-06
    • PCT/US2010/040178
    • 2010-06-28
    • ADVANCED TECHNOLOGY MATERIALS, INC.ZHENG, Jun-Fei
    • ZHENG, Jun-Fei
    • H01L27/115H01L21/8247H01L27/10
    • H01L45/124H01L45/06H01L45/144H01L45/1616H01L45/1641H01L45/1691
    • A memory cell structure, including a substrate having a via therein bound at first and second ends thereof by electrodes. The via is coated on side surfaces thereof with GST material defining a core that is hollow or at least partially filled with material, e.g., germanium or dielectric material. One or more of such memory cell structures may be integrated in a phase change memory device. The memory cell structure can be fabricated in a substrate containing a via closed at one end thereof with a bottom electrode, by conformally coating GST material on sidewall surface of the via and surface of the bottom electrode enclosing the via, to form an open core volume bounded by the GST material, optionally at least partially filling the open core volume with germanium or dielectric material, annealing the GST material film, and forming a top electrode at an upper portion of the via.
    • 存储器单元结构,包括其中具有其中通过电极在其第一端和第二端处结合的通孔的衬底。 通孔在其侧表面上涂有GST材料,该GST材料限定了空心的或至少部分填充有例如锗或介电材料的材料的芯。 一个或多个这样的存储单元结构可以集成在相变存储器件中。 存储器单元结构可以在包含通孔的基板中制造,所述通孔在其一端封闭有底部电极,通过在通孔的侧壁表面上共形涂覆GST材料以及封闭通孔的底部电极的表面以形成开放芯体积 以GST材料为界,任选地用锗或电介质材料至少部分地填充开口核心体积,退火GST材料膜,并在通孔的上部形成顶部电极。