IN VIA FORMED PHASE CHANGE MEMORY CELL WITH RECESSED PILLAR HEATER
    71.
    发明申请
    IN VIA FORMED PHASE CHANGE MEMORY CELL WITH RECESSED PILLAR HEATER 有权
    通过形成相位改变记忆细胞与被加热的支柱加热器

    公开(公告)号:US20110057162A1

    公开(公告)日:2011-03-10

    申请号:US12556198

    申请日:2009-09-09

    IPC分类号: H01L45/00 H01L21/06

    摘要: A method for fabricating a phase change memory device including a plurality of in via phase change memory cells includes forming pillar heaters formed of a conductive material along a contact surface of a substrate corresponding to each of an array of conductive contacts to be connected to access circuitry, forming a dielectric layer along exposed areas of the substrate surrounding the pillar heaters, forming an interlevel dielectric (ILD) layer above the dielectric layer, etching a via to the dielectric layer, each via corresponding to each of pillar heater such that an upper surface of each pillar heater is exposed within each via, recessing each pillar heater, depositing phase change material in each via on each recessed pillar heater, recessing the phase change material within each via, and forming a top electrode within the via on the phase change material.

    摘要翻译: 一种用于制造包括多个通孔相变存储单元的相变存储器件的方法包括:形成由导电材料形成的支柱加热器,沿着与要连接到存取电路的导电触点阵列相对应的衬底的接触表面 沿着围绕柱加热器的衬底的暴露区域形成电介质层,在电介质层之上形成层间电介质(ILD)层,将通孔蚀刻到电介质层,每个通孔对应于每个立柱加热器,使得上表面 每个立柱加热器暴露在每个通孔内,使每个立柱加热器凹陷,在每个凹槽加热器上的每个通孔中沉积相变材料,使每个通孔内的相变材料凹陷,并且在相变材料上的通孔内形成顶部电极 。

    METHOD TO REDUCE RESET CURRENT OF PCM USING STRESS LINER LAYERS
    74.
    发明申请
    METHOD TO REDUCE RESET CURRENT OF PCM USING STRESS LINER LAYERS 审中-公开
    使用应力衬层降低复位电流的方法

    公开(公告)号:US20100078621A1

    公开(公告)日:2010-04-01

    申请号:US12243809

    申请日:2008-10-01

    IPC分类号: H01L45/00

    摘要: A memory cell structure and method for forming the same. The method includes forming a via within a dielectric layer. The via is formed over the center of an electrically conducting bottom electrode. The method includes depositing a stress liner along at least one sidewall of the via. The stress liner imparting stress on material proximate the stress liner. In one embodiment, the stress liner provides a stress in the range of 500 to 5000 MPa on the material enclosed within its volume. The method includes depositing phase change material within the via and the volume enclosed by the stress liner. The method also includes forming an electrically conducting top electrode above the phase change material.

    摘要翻译: 一种存储单元结构及其形成方法。 该方法包括在电介质层内形成通孔。 通孔形成在导电底部电极的中心上方。 该方法包括沿通孔的至少一个侧壁沉积应力衬垫。 应力衬垫对应力衬垫附近的材料施加应力。 在一个实施例中,应力衬垫在封装在其体积内的材料上提供在500至5000MPa范围内的应力。 该方法包括在通孔和由应力衬垫包围的体积内沉积相变材料。 该方法还包括在相变材料上形成导电顶电极。

    METHOD OF FORMING RING ELECTRODE
    76.
    发明申请
    METHOD OF FORMING RING ELECTRODE 失效
    形成电极的方法

    公开(公告)号:US20090227066A1

    公开(公告)日:2009-09-10

    申请号:US12043228

    申请日:2008-03-06

    IPC分类号: H01L47/00 H01L21/768

    摘要: The present invention in one embodiment provides a method of forming an electrode that includes the steps of providing at least one metal stud in a layer of an interlevel dielectric material; forming a pillar of a first dielectric material atop the at least one metal stud; depositing an electrically conductive material atop the layer of the interlevel dielectric material and an exterior surface of the pillar, wherein a portion of the electrically conductive material is in electrical communication with the at least one metal stud; forming a layer of a second dielectric material atop the electrically conductive material and the substrate; and planarizing the layer of the second dielectric material to expose an upper surface of the electrically conductive material.

    摘要翻译: 本发明在一个实施例中提供了形成电极的方法,其包括以下步骤:在层间电介质材料层中提供至少一个金属柱; 在所述至少一个金属螺柱的顶部上形成第一介电材料的柱; 在所述层间电介质材料的层的顶部和所述柱的外表面之上沉积导电材料,其中所述导电材料的一部分与所述至少一个金属螺柱电连通; 在导电材料和基底之上形成第二电介质材料层; 以及平坦化所述第二电介质材料的层以暴露所述导电材料的上表面。