Method for forming dual damascene structures with tapered via portions and improved performance
    11.
    发明申请
    Method for forming dual damascene structures with tapered via portions and improved performance 有权
    用于形成具有锥形通孔部分的双镶嵌结构和改进的性能的方法

    公开(公告)号:US20060199379A1

    公开(公告)日:2006-09-07

    申请号:US11071104

    申请日:2005-03-04

    IPC分类号: H01L21/4763 H01L21/31

    摘要: The manufacture of damascene structures having improved performance, particularly, but not by way of limitation, dual damascene structures is provided. In one embodiment, a substrate having a conductive layer is formed in a first insulating layer. A protective layer is formed above the conductive layer. An etching stop layer is formed above the protective layer and the first insulating layer. A second insulating layer is formed above the etching stop layer. A first patterned photoresist layer is formed above the second insulating layer, the first patterned photoresist layer having a first pattern. The first pattern is etched into the second insulating layer and the etching stop layer to form a first opening. A via plug is filled at least partially in the first opening. An anti-reflective coating (ARC) layer is formed above the second insulating layer. A second patterned photoresist layer is formed above the ARC layer, the second photoresist layer having a second pattern. The second pattern is etched into portions of the via plug, second insulation layer, and the ARC layer to form a second opening, wherein a substantially tapered sidewall portion is formed at the interface of the first and second openings.

    摘要翻译: 提供了具有改进的性能,特别但非限制性的双镶嵌结构的镶嵌结构的制造。 在一个实施例中,具有导电层的衬底形成在第一绝缘层中。 在导电层上形成保护层。 在保护层和第一绝缘层上方形成蚀刻停止层。 在蚀刻停止层上形成第二绝缘层。 第一图案化光致抗蚀剂层形成在第二绝缘层之上,第一图案化光致抗蚀剂层具有第一图案。 将第一图案蚀刻到第二绝缘层和蚀刻停止层中以形成第一开口。 通孔插塞至少部分地填充在第一开口中。 在第二绝缘层上方形成抗反射涂层(ARC)层。 第二图案化光致抗蚀剂层形成在ARC层上方,第二光致抗蚀剂层具有第二图案。 第二图案被蚀刻到通孔塞,第二绝缘层和ARC层的部分中以形成第二开口,其中在第一和第二开口的界面处形成大致锥形的侧壁部分。

    Loadlock
    13.
    发明申请
    Loadlock 审中-公开
    负载锁

    公开(公告)号:US20050097769A1

    公开(公告)日:2005-05-12

    申请号:US10668291

    申请日:2003-09-24

    IPC分类号: H01L21/677 F26B13/30

    CPC分类号: H01L21/67781

    摘要: A loadlock. The loadlock for wafers includes a chamber, a pedestal, a retractable shaft, and a bellows. The chamber has a plurality of walls and a bottom surface. The pedestal supports a cassette and is disposed in the chamber. The retractable shaft has a top end and a bottom end. The top end is connected to the pedestal and the bottom end is connected to the bottom surface as a reference for positioning the pedestal. The bellows has a first end and a second end. The first end is disposed on the pedestal and the second end is sealed at the bottom end of the retractable shaft. Preferably, the retractable shaft is fully enclosed by the bellows.

    摘要翻译: 一个加载锁 用于晶片的负荷锁包括一个腔室,一个基座,一个伸缩轴和一个波纹管。 腔室具有多个壁和底面。 基座支撑盒并设置在腔室中。 伸缩轴具有顶端和底端。 顶端连接到基座,底端连接到底面作为基座的基准。 波纹管具有第一端和第二端。 第一端设置在基座上,第二端在可伸缩轴的底端被密封。 优选地,可伸缩轴被波纹管完全包围。

    Method to solve via poisoning for porous low-k dielectric
    14.
    发明授权
    Method to solve via poisoning for porous low-k dielectric 失效
    解决多孔低介电常数中毒的方法

    公开(公告)号:US06878615B2

    公开(公告)日:2005-04-12

    申请号:US09863224

    申请日:2001-05-24

    IPC分类号: H01L21/768 H01L21/4763

    摘要: A method of forming a via in a low-k dielectric material and without the attendant via poisoning problem, or a dual damascene structure formed in the same dielectric and without the same problem are disclosed. The vertical walls of the via opening are first lined with a low-k protection layer and then covered with a barrier layer in order to prevent outgassing from the low-k dielectric material when copper is deposited into the via opening. In the case of a dual damascene structure, it is sufficient that the hole opening underlying the trench opening is first lined with the low-k protection layer. The resulting via or dual damascene structure is free of poisoned metal and, therefore, more reliable.

    摘要翻译: 公开了一种在低k电介质材料中形成通孔并且不伴随通过中毒问题的方法,或者形成在相同电介质中并且没有相同问题的双镶嵌结构。 通孔开口的垂直壁首先衬有低k保护层,然后被阻挡层覆盖,以便当铜沉积到通孔中时,防止从低k电介质材料脱气。 在双镶嵌结构的情况下,沟槽开口下方的开孔首先衬有低k保护层就足够了。 所得到的通孔或双镶嵌结构没有中毒金属,因此更可靠。

    Method of manufacturing a contact interconnection layer containing a metal and nitrogen by atomic layer deposition for deep sub-micron semiconductor technology
    15.
    发明申请
    Method of manufacturing a contact interconnection layer containing a metal and nitrogen by atomic layer deposition for deep sub-micron semiconductor technology 有权
    通过用于深亚微米半导体技术的原子层沉积来制造包含金属和氮的接触互连层的方法

    公开(公告)号:US20050054196A1

    公开(公告)日:2005-03-10

    申请号:US10657505

    申请日:2003-09-08

    摘要: An atomic layer deposition method is used to deposit a TiN or TiSiN film having a thickness of about 50 nm or less on a substrate. A titanium precursor which is tetrakis(dimethylamido)titanium (TDMAT), tetrakis(diethylamido)titanium (TDEAT), or Ti{OCH(CH3)2}4 avoids halide contamination from a titanium halide precursor and is safer to handle than a titanium nitrate. After a monolayer of the titanium precursor is deposited on a substrate, a nitrogen containing reactant is introduced to form a TiN monolayer which is followed by a second purge. For TiSiN, a silicon source gas is fed into the process chamber after the TiN monolayer formation. The process is repeated several times to produce a composite layer comprised of a plurality of monolayers that fills a contact hole. The ALD method is cost effective and affords an interconnect with lower impurity levels and better step coverage than conventional PECVD or CVD processes.

    摘要翻译: 使用原子层沉积方法在衬底上沉积厚度约为50nm或更小的TiN或TiSiN膜。 四(二甲基氨基)钛(TDMAT),四(二乙基酰氨基)钛(TDEAT)或Ti {OCH(CH 3)2} 4)的钛前体避免了卤化钛前体的卤化物污染,并且比硝酸钛更安全 。 将钛前体的单层沉积在基底上之后,引入含氮反应物以形成TiN单层,随后进行第二次吹扫。 对于TiSiN,在TiN单层形成之后,将硅源气体进料到处理室中。 该过程重复几次以产生由填充接触孔的多个单层组成的复合层。 ALD方法具有成本效益,并且提供了比常规PECVD或CVD工艺更低的杂质水平和更好的阶梯覆盖的互连。

    Multi-step electrochemical copper deposition process with improved
filling capability
    16.
    发明授权
    Multi-step electrochemical copper deposition process with improved filling capability 有权
    多步电化学铜沉积工艺具有改善的填充能力

    公开(公告)号:US6140241A

    公开(公告)日:2000-10-31

    申请号:US270591

    申请日:1999-03-18

    CPC分类号: H01L21/76877 H01L21/2885

    摘要: A multi-step electrochemical method for forming a copper metallurgy on an integrated circuit which has high aspect ratio contact/via openings is described. The method is designed to give good coverage and gap filling capability as well as high production throughput by performing the electrochemical deposition of copper in two deposition stages with an dwell period between the stages. The process utilizes a copper plating electrolyte which contains an added brightener and leveler. The first deposition is done at a low current density which provides good coverage resulting from a high throwing power. The high aspect ratio contact/via openings are covered with a substantial thickness of a uniform, high quality copper coating. During the deposition, the concentration of brightener becomes depleted in the base region of high aspect ratio contacts or vias. The concentration of brighteners, is replenished in these regions by diffusion during a brief dwell period wherein the plating current is stopped. Next, a high current density is applied whereby the contact/vias are filled and additional copper is deposited over them at a high deposition rate. The greatest throughput benefits are realized, by way of the high current density step, when the process is applied to the formation of a dual damascene metallurgy.

    摘要翻译: 描述了在具有高纵横比接触/通孔开口的集成电路上形成铜冶金的多步电化学方法。 该方法设计为通过在两个沉积阶段之间执行铜的电化学沉积,具有阶段之间的停留时间,以提供良好的覆盖和间隙填充能力以及高的生产量。 该方法使用含有添加的增白剂和矫直机的镀铜电解质。 第一次沉积以低电流密度进行,这提供了由高投掷功率引起的良好覆盖。 高长宽比的接触/通孔开口用相当厚度的均匀的高质量铜涂层覆盖。 在沉积期间,增亮剂的浓度在高纵横比触点或通孔的基极区域中耗尽。 增亮剂的浓度,在电镀电流停止的短暂停留期间通过扩散在这些区域补充。 接下来,施加高电流密度,由此接触/通孔被填充,并且以高沉积速率在其上沉积额外的铜。 通过高电流密度步骤,当该方法应用于双镶嵌冶金的形成时,实现了最大的生产效率。

    Method for forming dual damascene structures with tapered via portions and improved performance
    17.
    发明授权
    Method for forming dual damascene structures with tapered via portions and improved performance 有权
    用于形成具有锥形通孔部分的双镶嵌结构和改进的性能的方法

    公开(公告)号:US07354856B2

    公开(公告)日:2008-04-08

    申请号:US11071104

    申请日:2005-03-04

    IPC分类号: H01L21/44

    摘要: The manufacture of damascene structures having improved performance, particularly, but not by way of limitation, dual damascene structures is provided. In one embodiment, a substrate having a conductive layer is formed in a first insulating layer. A protective layer is formed above the conductive layer. An etching stop layer is formed above the protective layer and the first insulating layer. A second insulating layer is formed above the etching stop layer. A first patterned photoresist layer is formed above the second insulating layer, the first patterned photoresist layer having a first pattern. The first pattern is etched into the second insulating layer and the etching stop layer to form a first opening. A via plug is filled at least partially in the first opening. An anti-reflective coating (ARC) layer is formed above the second insulating layer. A second patterned photoresist layer is formed above the ARC layer, the second photoresist layer having a second pattern. The second pattern is etched into portions of the via plug, second insulation layer, and the ARC layer to form a second opening, wherein a substantially tapered sidewall portion is formed at the interface of the first and second openings.

    摘要翻译: 提供了具有改进的性能,特别但非限制性的双镶嵌结构的镶嵌结构的制造。 在一个实施例中,具有导电层的衬底形成在第一绝缘层中。 在导电层上形成保护层。 在保护层和第一绝缘层上方形成蚀刻停止层。 在蚀刻停止层上形成第二绝缘层。 第一图案化光致抗蚀剂层形成在第二绝缘层之上,第一图案化光致抗蚀剂层具有第一图案。 将第一图案蚀刻到第二绝缘层和蚀刻停止层中以形成第一开口。 通孔塞至少部分地填充在第一开口中。 在第二绝缘层上方形成抗反射涂层(ARC)层。 第二图案化光致抗蚀剂层形成在ARC层上方,第二光致抗蚀剂层具有第二图案。 第二图案被蚀刻到通孔塞,第二绝缘层和ARC层的部分中以形成第二开口,其中在第一和第二开口的界面处形成大致锥形的侧壁部分。

    Method to solve via poisoning for porous low-k dielectric
    19.
    发明授权
    Method to solve via poisoning for porous low-k dielectric 有权
    解决多孔低介电常数中毒的方法

    公开(公告)号:US07250683B2

    公开(公告)日:2007-07-31

    申请号:US11056758

    申请日:2005-02-11

    IPC分类号: H01L23/48 H01L23/52 H01L29/40

    摘要: A method of forming a via in a low-k dielectric material and without the attendant via poisoning problem, or a dual damascene structure formed in the same dielectric and without the same problem are disclosed. The vertical walls of the via opening are first lined with a low-k protection layer and then covered with a barrier layer in order to prevent outgassing from the low-k dielectric material when copper is deposited into the via opening. In the case of a dual damascene structure, it is sufficient that the hole opening underlying the trench opening is first lined with the low-k protection layer. The resulting via or dual damascene structure is free of poisoned metal and, therefore, more reliable.

    摘要翻译: 公开了一种在低k电介质材料中形成通孔并且不伴随通过中毒问题的方法,或者形成在相同电介质中并且没有相同问题的双镶嵌结构。 通孔开口的垂直壁首先衬有低k保护层,然后被阻挡层覆盖,以便当铜沉积到通孔中时,防止从低k电介质材料脱气。 在双镶嵌结构的情况下,沟槽开口下方的开孔首先衬有低k保护层就足够了。 所得到的通孔或双镶嵌结构没有中毒金属,因此更可靠。