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    • 21. 发明授权
    • Interconnect structure with a barrier-redundancy feature
    • 互连结构与屏障冗余功能
    • US07348648B2
    • 2008-03-25
    • US11308220
    • 2006-03-13
    • Chih-Chao YangLouis L. Hsu
    • Chih-Chao YangLouis L. Hsu
    • H01L27/14
    • H01L21/76849H01L23/53238H01L23/53295H01L2924/0002H01L2924/00
    • An interconnect structure that includes a barrier-redundancy feature which is capable of avoiding a sudden open circuit after an electromigration (EM) failure as well as a method of forming the same are provided. In accordance with the present invention, the barrier-redundancy feature is located within preselected locations within the interconnect structure including in a wide line region, a thin line region or any combination thereof. The barrier-redundancy feature includes an electrical conductive material located between, and in contact with, a conductive line diffusion barrier of a conductive line and a via diffusion barrier of an overlying via. The presence of the inventive barrier-redundancy feature creates an electrical path between the via diffusion barrier along the sidewalls of the via and the conductive line diffusion barrier along the sidewalls of the conductive line. This electrical path generated by the inventive barrier-redundancy feature can avoid a sudden open circuit resulting from EM failure at the bottom of the via. The presence of the inventive barrier-redundancy feature within an interconnect structure provides sufficient time for chip replacement or system operation.
    • 提供一种互连结构,其包括能够在电迁移(EM)故障之后避免突然断路的障碍物冗余特征以及其形成方法。 根据本发明,阻挡冗余特征位于互连结构内的预选位置,包括在宽线区域,细线区域或其任何组合中。 阻挡层冗余特征包括导电材料,其位于导电线的导电线扩散阻挡层和上覆通孔的通孔扩散阻挡层之间并与之接触。 本发明的阻挡 - 冗余特征的存在在沿着导电线的侧壁的通孔的侧壁和导电线扩散阻挡层之间形成通路扩散阻挡层之间的电路径。 由本发明的障碍物冗余特征产生的该电路径可以避免由于通孔底部的EM故障导致的突然开路。 在互连结构内部存在本发明的障碍物冗余特征为芯片更换或系统操作提供足够的时间。
    • 27. 发明申请
    • SEMICONDUCTOR STRUCTURE FOR FUSE AND ANTI-FUSE APPLICATIONS
    • 用于保险丝和抗 - 保险丝应用的半导体结构
    • US20080296728A1
    • 2008-12-04
    • US11755995
    • 2007-05-31
    • Chih-Chao YangDaniel C. EdelsteinJack A. MandelmanLouis L. Hsu
    • Chih-Chao YangDaniel C. EdelsteinJack A. MandelmanLouis L. Hsu
    • H01L23/525H01L21/768
    • H01L23/5256H01L23/5252H01L2924/0002H01L2924/00
    • A fuse/anti-fuse structure is provided in which programming of the anti-fuse is caused by an electromigation induced hillock that is formed adjacent to the fuse element. The hillock ruptures a thin diffusion barrier located on the sidewalls of the fuse element and the conductive material within the fuse element diffuses into the adjacent dielectric material. The fuse element includes a conductive material located within a line opening which includes a first diffusion barrier having a first thickness located on sidewalls and a bottom wall of the line opening. The anti-fuse element includes the conductive material located within a combined via and line opening which includes the first diffusion barrier located on sidewalls and a bottom wall of the combined via and line opening and a second diffusion barrier having a second thickness that is greater than the first thickness located on the first diffusion barrier.
    • 提供了一种保险丝/反熔丝结构,其中抗熔丝的编程由邻近熔丝元件形成的电动诱发小丘引起。 小丘破裂位于熔丝元件的侧壁上的薄的扩散阻挡层,并且熔丝元件内的导电材料扩散到相邻的介电材料中。 保险丝元件包括位于线路开口内的导电材料,该导电材料包括具有第一厚度的第一扩散阻挡层,位于侧壁上的第一厚度和线路开口的底壁。 抗熔丝元件包括位于组合的通孔和线路开口内的导电材料,其包括位于组合的通路和线路开口的侧壁上的第一扩散阻挡层和具有大于第二扩散阻挡层的第二厚度的第二扩散阻挡层 第一厚度位于第一扩散阻挡层上。