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    • 58. 发明授权
    • Method of enhanced silicide layer for advanced metal diffusion barrier layer application
    • 用于先进金属扩散阻挡层应用的增强硅化物层的方法
    • US06271120B1
    • 2001-08-07
    • US08402252
    • 1995-03-10
    • Richard J. HuangRobin W. Cheung
    • Richard J. HuangRobin W. Cheung
    • H01L214763
    • H01L21/76867H01L21/76843
    • A rapid thermal anneal (>600° C.) in a nitrogen-containing atmosphere is used to form a barrier TiN layer at the bottom of contact openings. To form source and drain contacts, contact openings are etched in a dielectric down to a titanium silicide layer on top of doped regions in the semiconductor (i.e. polysilicon or doped regions in the semiconductor substrate). The barrier TiN layer on the bottom of the contact openings is provided by a rapid thermal anneal in a nitrogen-containing atmosphere which converts the top part of the titanium silicide layer in the contact openings into a barrier TiN layer. This nitrogen-containing atmosphere contains nitrogen-containing species (e.g., N2, NH3, N2O) that react with titanium silicide to form TiN under the conditions provided by the rapid thermal anneal.
    • 在含氮气氛中的快速热退火(> 600℃)用于在接触开口的底部形成阻挡层TiN层。 为了形成源极和漏极触点,在电介质中将接触开口蚀刻到半导体中的掺杂区域(即半导体衬底中的多晶硅或掺杂区域)顶部的硅化钛层。 通过在含氮气氛中的快速热退火来提供接触开口底部的阻挡层TiN层,其将接触开口中的硅化钛层的顶部转化为势垒TiN层。 该含氮气氛含有与硅化钛反应形成TiN的含氮物质(例如,N 2,NH 3,N 2 O),在快速热退火条件下
    • 59. 发明授权
    • Integration of low-K SiOF for damascene structure
    • 用于镶嵌结构的低K SiOF的集成
    • US06177364B1
    • 2001-01-23
    • US09203754
    • 1998-12-02
    • Richard J. Huang
    • Richard J. Huang
    • H01L2131
    • H01L21/02131H01L21/02274H01L21/02332H01L21/0234H01L21/31629H01L21/76807
    • An interlayer dielectric for a damascene structure includes a first etch stop layer formed on a substrate. A first interlayer dielectric layer containing fluorine is formed on the first etch stop layer by deposition. A second etch stop layer is formed on the first interlayer dielectric layer. A second interlayer dielectric layer containing fluorine is formed on the second etch stop layer by deposition. The first and second interlayer dielectric layers and the first and second etch stop layers are etched to form at least one trench and at least one via. The at least one trench and the at least one via are treated with an H2/N2 plasma in-situ, wherein a fluorine-depleted region in the first and second interlayer dielectric layers is formed, and wherein a nitrided region is formed adjacent the fluorine-depleted region, with the nitrided region corresponding to a side surface of the at least one trench and the at least one via. A barrier metal layer is deposited in the at least one trench and the at least one via, whereby the nitrided region provides a passivation layer by which fluorine in the fluorine-depleted region is kept from leeching into the barrier metal layer. The at least one trench and the at least one via are then filled with either copper or aluminum.
    • 用于镶嵌结构的层间电介质包括形成在基板上的第一蚀刻停止层。 通过沉积在第一蚀刻停止层上形成含有氟的第一层间介质层。 在第一层间介质层上形成第二蚀刻停止层。 通过沉积在第二蚀刻停止层上形成含氟的第二层间介质层。 蚀刻第一和第二层间电介质层以及第一和第二蚀刻停止层以形成至少一个沟槽和至少一个通孔。 所述至少一个沟槽和所述至少一个通孔在原位处用H 2 / N 2等离子体处理,其中形成所述第一和第二层间电介质层中的氟耗尽区,并且其中邻近所述氟形成氮化区 所述氮化区域对应于所述至少一个沟槽和所述至少一个通孔的侧表面。 在所述至少一个沟槽和所述至少一个通孔中沉积阻挡金属层,由此所述氮化区域提供钝化层,通过所述钝化层,所述钝化层中的氟贫乏区域中的氟不被浸入所述阻挡金属层。 然后用铜或铝填充至少一个沟槽和至少一个通孔。
    • 60. 发明授权
    • Method for manufacturing semiconductors with self-aligning vias
    • 具有自对准通孔的半导体制造方法
    • US6124201A
    • 2000-09-26
    • US097126
    • 1998-06-12
    • Fei WangRobin CheungMark S. ChangRichard J. HuangAngela T. Hui
    • Fei WangRobin CheungMark S. ChangRichard J. HuangAngela T. Hui
    • H01L21/60H01L21/768H01L21/4763
    • H01L21/76897H01L21/76802
    • An integrated circuit having semiconductor devices is connected by a first conductive channel damascened into a first oxide layer above the devices. A stop nitride layer, a via oxide layer, a via nitride layer, and a via resist are sequentially deposited on the first channel and the first oxide layer. The via resist is photolithographically developed with rectangular cross-section vias greater than the width of the channels and the via nitride layer is etched to the rectangular cross-section. A second channel oxide layer and a second channel resist are sequentially deposited on the via nitride layer and the exposed via oxide layer. The second channel resist is photolithographically developed with the second channels and an anisotropic oxide etch etches the second channels and rectangular box vias down to the stop nitride layer. He stop nitride layer is nitride etched in the rectangular via configuration and conductive material is damascened into the second channels and the via to be chemical-mechanical polished to form the interconnections between two levels of channels.
    • 具有半导体器件的集成电路通过镶嵌在器件上方的第一氧化物层中的第一导电沟道连接。 在第一沟道和第一氧化物层上顺序地沉积有终止氮化物层,通孔氧化物层,通路氮化物层和通路保护层。 通孔抗蚀剂被光刻显影,具有大于通道宽度的矩形横截面通孔,并且通孔氮化物层被蚀刻到矩形横截面。 第二沟道氧化物层和第二沟道抗蚀剂依次沉积在通孔氮化物层和暴露的通孔氧化物层上。 第二通道抗蚀剂用第二通道光刻显影,并且各向异性氧化物蚀刻将第二通道和矩形盒通孔蚀刻到固定氮化物层。 他停止氮化物层是以矩形通孔结构蚀刻氮化物,并且导电材料被镶嵌到第二通道中,并且通孔被化学机械抛光以形成两个通道级之间的互连。