PLASMA SURFACE TREATMENT TO PREVENT PATTERN COLLAPSE IN IMMERSION LITHOGRAPHY
    19.
    发明申请
    PLASMA SURFACE TREATMENT TO PREVENT PATTERN COLLAPSE IN IMMERSION LITHOGRAPHY 审中-公开
    等离子体表面处理,以防止浸渍图中的图案褶皱

    公开(公告)号:US20090104541A1

    公开(公告)日:2009-04-23

    申请号:US11877559

    申请日:2007-10-23

    IPC分类号: G03F1/00

    CPC分类号: G03F7/091 G03F7/11

    摘要: The present invention comprises a method of reducing photoresist mask collapse when the photoresist mask is dried after immersion development. As feature sizes continue to shrink, the capillary force of water used to rinse a photoresist mask approaches the point of being greater than adhesion force of the photoresist to the ARC. When the capillary force exceeds the adhesion force, the features of the mask may collapse because the water pulls adjacent features together as the water dries. By depositing a hermetic oxide layer over the ARC before depositing the photoresist, the adhesion force may exceed the capillary force and the features of the photoresist mask may not collapse.

    摘要翻译: 本发明包括当浸渍显影后干燥光致抗蚀剂掩模时减少光致抗蚀剂掩模塌陷的方法。 随着特征尺寸的不断缩小,用于冲洗光致抗蚀剂掩模的水的毛细管力接近光致抗蚀剂对ARC的粘附力。 当毛细管力超过粘附力时,面具的特征可能会因为水干燥而将相邻的特征拉到一起而崩溃。 通过在沉积光致抗蚀剂之前在ARC上沉积气密的氧化物层,粘合力可能会超过毛细管力,并且光致抗蚀剂掩模的特征可能不会崩溃。

    Composite removable hardmask
    20.
    发明授权
    Composite removable hardmask 有权
    复合可移动硬掩模

    公开(公告)号:US08252699B2

    公开(公告)日:2012-08-28

    申请号:US12952024

    申请日:2010-11-22

    IPC分类号: H01L21/033

    摘要: A method and apparatus for forming an amorphous carbon layer on a substrate is provided. A first portion of the amorphous carbon layer having a high stress level is formed from a hydrocarbon precursor having high dilution ratio, with optional amine precursor included to add stress-elevating nitrogen. A second portion of the amorphous carbon layer having a low stress level is formed on the first portion by reducing the dilution ratio of the hydrocarbon precursor and lowering or eliminating the amine gas. Pressure, temperature, and RF power input may be adjusted instead of, or in addition to, precursor flow rates, and different precursors may be used for different stress levels.

    摘要翻译: 提供了一种在基板上形成无定形碳层的方法和装置。 具有高应力水平的无定形碳层的第一部分由具有高稀释比的烃前体形成,并且包括任选的胺前体以增加应力升高的氮。 通过降低烃前体的稀释比例和降低或除去胺气体,在第一部分上形成具有低应力水平的第二部分无定形碳层。 可以调节压力,温度和RF功率输入,而不是或除了前体流速,并且不同的前体可用于不同的应力水平。