PHASE CHANGE MEMORY CELL ARRAY WITH SELF-CONVERGED BOTTOM ELECTRODE AND METHOD FOR MANUFACTURING
    103.
    发明申请
    PHASE CHANGE MEMORY CELL ARRAY WITH SELF-CONVERGED BOTTOM ELECTRODE AND METHOD FOR MANUFACTURING 有权
    相变式存储单元阵列与自适应底层电极及其制造方法

    公开(公告)号:US20120193599A1

    公开(公告)日:2012-08-02

    申请号:US13445194

    申请日:2012-04-12

    IPC分类号: H01L45/00

    摘要: An array of phase change memory cells is manufactured by forming a separation layer over an array of contacts, forming a patterning layer on the separation layer and forming an array of mask openings in the patterning layer using lithographic process. Etch masks are formed within the mask openings by a process that compensates for variation in the size of the mask openings that result from the lithographic process. The etch masks are used to etch through the separation layer to define an array of electrode openings exposing the underlying contacts. Electrode material is deposited within the electrode openings; and memory elements are formed over the bottom electrodes. Finally, bit lines are formed over the memory elements to complete the memory cells. In the resulting memory array, the critical dimension of the top surface of bottom electrode varies less than the width of the memory elements in the mask openings.

    摘要翻译: 通过在触点阵列上形成分离层,在分离层上形成图形层并使用光刻工艺在图案形成层中形成掩模开口阵列来制造相变存储器单元的阵列。 通过补偿由平版印刷工艺产生的掩模开口的尺寸变化的过程,在掩模开口内形成蚀刻掩模。 蚀刻掩模用于蚀刻通过分离层以限定暴露下面的触点的电极开口的阵列。 电极材料沉积在电极开口内; 并且存储元件形成在底部电极上。 最后,在存储器元件上形成位线以完成存储器单元。 在所得到的存储器阵列中,底部电极的顶表面的临界尺寸小于掩模开口中存储元件的宽度。

    Thermally insulated phase change material memory cells with pillar structure
    104.
    发明授权
    Thermally insulated phase change material memory cells with pillar structure 有权
    具有柱结构的绝热相变材料记忆体

    公开(公告)号:US08138056B2

    公开(公告)日:2012-03-20

    申请号:US12497596

    申请日:2009-07-03

    IPC分类号: H01L21/20 H01L21/4763

    摘要: A memory cell structure and method for forming the same. The method includes forming a pore within a dielectric layer. The pore is formed over the center of an electrically conducting bottom electrode. The method includes depositing a thermally insulating layer along at least one sidewall of the pore. The thermally insulating layer isolates heat from phase change current to the volume of the pore. In one embodiment phase change material is deposited within the pore and the volume of the thermally insulating layer. In another embodiment a pore electrode is formed within the pore and the volume of the thermally insulating layer, with the phase change material being deposited above the pore electrode. 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孔。 孔形成在导电底部电极的中心上方。 该方法包括沿孔的至少一个侧壁沉积绝热层。 绝热层将热量从相变电流隔离成孔的体积。 在一个实施例中,相变材料沉积在孔隙和隔热层的体积内。 在另一个实施方案中,孔隙电极形成在绝热层的孔隙和体积内,相变材料沉积在孔电极上方。 该方法还包括在相变材料上形成导电顶电极。

    Method to reduce a via area in a phase change memory cell
    105.
    发明授权
    Method to reduce a via area in a phase change memory cell 有权
    降低相变存储单元中的通孔面积的方法

    公开(公告)号:US08101456B2

    公开(公告)日:2012-01-24

    申请号:US12243759

    申请日:2008-10-01

    IPC分类号: H01L21/00

    摘要: A memory cell structure and method to form such structure. The method partially comprised of forming a via within an oxidizing layer, over the center of a bottom electrode. The method includes depositing a via spacer along the sidewalls of the via and oxidizing the via spacer. The via spacer being comprised of a material having a Pilling-Bedworth ratio of at least one and one-half and is an insulator when oxidized. The via area is reduced by expansion of the via spacer during the oxidation. Alternatively, the method is partially comprised of forming a via within a first layer, over the center of the bottom electrode. The first layer has a Pilling-Bedworth ratio of at least one and one-half and is an insulator when oxidized. The method also includes oxidizing at least a portion of the sidewalls of the via in the first layer.

    摘要翻译: 存储单元结构和形成这种结构的方法。 该方法部分地包括在底部电极的中心上形成氧化层内的通孔。 该方法包括沿通孔的侧壁沉积通孔间隔物并氧化通孔间隔物。 通孔间隔件由具有至少一个半的起珠床比的材料组成,并且当被氧化时是绝缘体。 在氧化期间通孔间隔物的膨胀减小了通孔面积。 或者,该方法部分地包括在底部电极的中心之上在第一层内形成通孔。 第一层具有至少一个半的Pilling-Bedworth比,并且当被氧化时是绝缘体。 该方法还包括在第一层中氧化通孔的侧壁的至少一部分。

    VERTICAL FIELD EFFECT TRANSISTOR ARRAYS AND METHODS FOR FABRICATION THEREOF
    106.
    发明申请
    VERTICAL FIELD EFFECT TRANSISTOR ARRAYS AND METHODS FOR FABRICATION THEREOF 有权
    垂直场效应晶体管阵列及其制造方法

    公开(公告)号:US20110275209A1

    公开(公告)日:2011-11-10

    申请号:US13185055

    申请日:2011-07-18

    IPC分类号: H01L21/28

    CPC分类号: H01L21/823487 H01L27/088

    摘要: Vertical field effect transistor semiconductor structures and methods for fabrication of the vertical field effect transistor semiconductor structures provide an array of semiconductor pillars. Each vertical portion of each semiconductor pillar in the array of semiconductor pillars has a linewidth greater than a separation distance to an adjacent semiconductor pillar. Alternatively, the array may comprise semiconductor pillars with different linewidths, optionally within the context of the foregoing linewidth and separation distance limitations. A method for fabricating the array of semiconductor pillars uses a minimally photolithographically dimensioned pillar mask layer that is annularly augmented with at least one spacer layer prior to being used as an etch mask.

    摘要翻译: 垂直场效应晶体管半导体结构和用于制造垂直场效应晶体管半导体结构的方法提供半导体柱阵列。 半导体柱阵列中的每个半导体柱的每个垂直部分具有大于与相邻半导体柱的间隔距离的线宽。 或者,阵列可以包括具有不同线宽的半导体柱,任选地在上述线宽和间隔距离限制的上下文中。 用于制造半导体柱阵列的方法使用最小光刻尺寸的柱掩模层,其在被用作蚀刻掩模之前用至少一个间隔层环形增强。

    PHASE CHANGE MEMORY DEVICE WITH PLATED PHASE CHANGE MATERIAL
    107.
    发明申请
    PHASE CHANGE MEMORY DEVICE WITH PLATED PHASE CHANGE MATERIAL 有权
    具有相变相变材料的相变存储器件

    公开(公告)号:US20110240944A1

    公开(公告)日:2011-10-06

    申请号:US13159594

    申请日:2011-06-14

    IPC分类号: H01L45/00 B82Y10/00

    摘要: A method for fabricating a phase change memory device including memory cells includes patterning a via to a contact surface of a substrate corresponding to each of an array of conductive contacts to be connected to access circuitry, lining each via with a conformal conductive seed layer to the contact surface, forming a dielectric layer covering the conductive seed layer, and etching a center region of each via to the contact surface to expose the conformal conductive seed layer at the contact surface. The method further includes electroplating phase change material on exposed portions of the conformal conductive seed layer, recessing the phase change material within the center region forming a conductive material that remains conductive upon oxidation, on the recessed phase change material, oxidizing edges of the conformal conductive seed layer formed along sides of each via, and forming a top electrode over each memory cell.

    摘要翻译: 一种用于制造包括存储单元的相变存储器件的方法包括将通孔图案化成与要连接到存取电路的导电触头阵列相对应的衬底的接触表面,将每个通孔用保形导电晶种层 形成覆盖导电种子层的电介质层,并将每个通孔的中心区域蚀刻到接触表面,以在接触表面露出共形导电种子层。 该方法还包括在保形导电晶种层的暴露部分上电镀相变材料,使形成导电材料的中心区域内的相变材料凹陷在凹陷相变材料上,该导电材料在凹陷相变材料上保持导电,保形导电 晶种层沿每个通孔的侧面形成,并且在每个存储单元上形成顶部电极。

    Method for fabricating a vertical field effect transistor array comprising a plurality of semiconductor pillars
    109.
    发明授权
    Method for fabricating a vertical field effect transistor array comprising a plurality of semiconductor pillars 有权
    一种制造包括多个半导体柱的垂直场效应晶体管阵列的方法

    公开(公告)号:US07981748B2

    公开(公告)日:2011-07-19

    申请号:US12541495

    申请日:2009-08-14

    IPC分类号: H01L21/308

    CPC分类号: H01L21/823487 H01L27/088

    摘要: Vertical field effect transistor semiconductor structures and methods for fabrication of the vertical field effect transistor semiconductor structures provide an array of semiconductor pillars. Each vertical portion of each semiconductor pillar in the array of semiconductor pillars has a linewidth greater than a separation distance to an adjacent semiconductor pillar. Alternatively, the array may comprise semiconductor pillars with different linewidths, optionally within the context of the foregoing linewidth and separation distance limitations. A method for fabricating the array of semiconductor pillars uses a minimally photolithographically dimensioned pillar mask layer that is annularly augmented with at least one spacer layer prior to being used as an etch mask.

    摘要翻译: 垂直场效应晶体管半导体结构和用于制造垂直场效应晶体管半导体结构的方法提供半导体柱阵列。 半导体柱阵列中的每个半导体柱的每个垂直部分具有大于与相邻半导体柱的间隔距离的线宽。 或者,阵列可以包括具有不同线宽的半导体柱,任选地在上述线宽和间隔距离限制的上下文中。 用于制造半导体柱阵列的方法使用最小光刻尺寸的柱掩模层,其在被用作蚀刻掩模之前用至少一个间隔层环形增强。

    PLANARIZATION STOP LAYER IN PHASE CHANGE MEMORY INTEGRATION
    110.
    发明申请
    PLANARIZATION STOP LAYER IN PHASE CHANGE MEMORY INTEGRATION 有权
    相位变化记忆集成中的平面停止层

    公开(公告)号:US20110062559A1

    公开(公告)日:2011-03-17

    申请号:US12559115

    申请日:2009-09-14

    IPC分类号: H01L29/06 H01L21/302

    摘要: A key hole structure and method for forming a key hole structure to form a pore in a memory cell. The method includes forming a first dielectric layer on a semiconductor substrate having an electrode formed therein, forming an isolation layer on the first dielectric layer, forming a second dielectric layer on the isolation layer, and forming a planarization stop layer on the second dielectric layer. The method further includes forming a via to extend to the first dielectric layer and recessing the isolation layer and the stop layer with respect to the second dielectric layer, depositing a conformal film within via and over the stop layer, forming a key hole within the conformal film at a center region of the via such that a tip of the key hole is disposed at an upper surface of the second dielectric layer, and planarizing the conformal film to the stop layer.

    摘要翻译: 一种用于形成密钥孔结构以在存储单元中形成孔的关键孔结构和方法。 该方法包括在其上形成有电极的半导体衬底上形成第一电介质层,在第一电介质层上形成隔离层,在隔离层上形成第二电介质层,并在第二电介质层上形成平坦化停止层。 该方法还包括形成通孔以延伸到第一电介质层并相对于第二电介质层凹陷隔离层和阻挡层,在通孔内和停止层上方沉积保形膜,在保形层内形成键孔 在通孔的中心区域设置薄膜,使得键孔的前端设置在第二电介质层的上表面,并将保形膜平坦化为止动层。