Real-time control of chemically-amplified resist processing on wafer
    32.
    发明授权
    Real-time control of chemically-amplified resist processing on wafer 失效
    化学放大抗蚀剂加工在晶圆上的实时控制

    公开(公告)号:US06864024B1

    公开(公告)日:2005-03-08

    申请号:US10302225

    申请日:2002-11-22

    CPC分类号: G03F7/0382 G03F7/0392

    摘要: One aspect of the present invention relates to a system and method for controlling environmental acid scavengers in real time during pattern exposure of a chemically amplified resist-clad wafer. The system includes a semiconductor wafer comprising a chemically amplified resist layer formed over a substrate layer, wherein a first portion of the resist layer has been removed to expose an area of the substrate layer in order to form a probe area; an exposure system programmed to implement an exposure process to transfer a device pattern onto at least a second portion of the resist layer; and a monitoring system adapted to detect chemical signals about the probe area in order to control the integrity of the resist layer during the exposure process. The method involves feeding data back to the on-going exposure process in order to effect an immediate change in the process.

    摘要翻译: 本发明的一个方面涉及在化学放大的抗蚀剂包覆晶片的图案曝光期间实时控制环境酸清除剂的系统和方法。 该系统包括半导体晶片,其包括在衬底层上形成的化学放大抗蚀剂层,其中已除去抗蚀剂层的第一部分以暴露衬底层的区域以形成探针区域; 曝光系统被编程为实现曝光过程以将装置图案转印到抗蚀剂层的至少第二部分上; 以及适于检测关于探针区域的化学信号以便在曝光过程期间控制抗蚀剂层的完整性的监测系统。 该方法涉及将数据馈送回正在进行的曝光过程,以便立即改变过程。

    Lithography contrast enhancement technique by varying focus with wavelength modulation
    34.
    发明授权
    Lithography contrast enhancement technique by varying focus with wavelength modulation 有权
    通过波长调制改变焦点的平版印刷对比度增强技术

    公开(公告)号:US06829040B1

    公开(公告)日:2004-12-07

    申请号:US10703643

    申请日:2003-11-07

    IPC分类号: G03B2742

    摘要: A projection lithography system exposes a photo sensitive material on a surface of a semiconductor substrate that includes surface height variations between a high level and a low level. The system comprises an illumination source projecting illumination within a narrow wavelength band centered about a nominal wavelength on an optic path towards the substrate during an exposure period. A wavelength modulation system within the optic path comprises means for chromatically separating the narrow wavelength band into at least two sub-bands, the first sub-band being smaller than the narrow wavelength band and centered about a first sub-band wavelength and the second sub-band being smaller than the narrow wavelength band and centered about a second sub-band wavelength and means for passing each of the first sub-band and the second sub-band during distinct time periods within the exposure period.

    摘要翻译: 投影光刻系统在半导体衬底的表面上曝光感光材料,其包括高电平和低电平之间的表面高度变化。 该系统包括照射源,其在曝光期间内以在光路上朝着衬底的标称波长为中心的窄波长带内投射照明。 光路内的波长调制系统包括用于将窄波段色带分离成至少两个子带的装置,第一子带小于窄波段并以第一子带波长为中心,第二子带 带窄于窄波长带并以第二子带波长为中心,以及用于在曝光周期内的不同时间段内通过第一子带和第二子带中的每一个的装置。

    Controlling thermal expansion of mask substrates by scatterometry
    37.
    发明授权
    Controlling thermal expansion of mask substrates by scatterometry 有权
    通过散射法控制掩模基板的热膨胀

    公开(公告)号:US06654660B1

    公开(公告)日:2003-11-25

    申请号:US10287292

    申请日:2002-11-04

    IPC分类号: G06F1900

    CPC分类号: G03F7/70425 G03F7/70875

    摘要: One aspect of the present invention relates to a system and method for controlling thermal expansion on an EUV mask during EUV photolithography. The system includes an EUV photolithography system for irradiating one or more layers of a wafer through one or more gratings of a patterned EUV mask, whereby heat accumulates on at least a portion of the patterned EUV mask during the irradiation of the one or more layers of the wafer; an EUV mask inspection system for monitoring the one or more gratings on the mask to detect expansion therein, the inspection system producing data relating to the mask; and a temperature control system operatively coupled to the inspection system for making adjustments to the EUV photolithography system in order to compensate for the detected expansion on the mask. The method involves employing feedback and feed forward control to optimize the current and future EUV photolithography processes.

    摘要翻译: 本发明的一个方面涉及一种用于在EUV光刻期间控制EUV掩模上的热膨胀的系统和方法。 该系统包括用于通过图案化的EUV掩模的一个或多个光栅照射晶片的一个或多个层的EUV光刻系统,由此在图案化的EUV掩模的照射期间在图案化的EUV掩模的至少一部分上积聚热量 晶圆; 用于监视所述掩模上的所述一个或多个光栅以检测其中的扩展的EUV掩模检查系统,所述检查系统产生与所述掩模有关的数据; 以及温度控制系统,其可操作地耦合到所述检查系统,以对EUV光刻系统进行调整,以便补偿所述掩模上检测到的膨胀。 该方法涉及采用反馈和前馈控制来优化当前和未来的EUV光刻工艺。

    Method of strengthening photoresist to prevent pattern collapse
    38.
    发明授权
    Method of strengthening photoresist to prevent pattern collapse 有权
    加强光致抗蚀剂以防止图案塌陷的方法

    公开(公告)号:US06635409B1

    公开(公告)日:2003-10-21

    申请号:US09902568

    申请日:2001-07-12

    IPC分类号: G03F700

    CPC分类号: G03F7/40 G03F7/2024

    摘要: There is provided a method for forming a photoresist layer for photolithographic applications which has increased structural strength. The photoresist layer is exposed through a mask and developed. The photoresist layer is then treated to change its material properties before the photoresist layer is dried. Also provided are a semiconductor fabrication method employing a treated photoresist and a composition for a treatable photoresist.

    摘要翻译: 提供了一种形成光刻应用的光致抗蚀剂层的方法,其具有增加的结构强度。 光致抗蚀剂层通过掩模曝光并显影。 然后在光致抗蚀剂层干燥之前,处理光致抗蚀剂层以改变其材料性质。 还提供了使用经处理的光致抗蚀剂和用于可处理光致抗蚀剂的组合物的半导体制造方法。

    Measuring BARC thickness using scatterometry
    40.
    发明授权
    Measuring BARC thickness using scatterometry 失效
    使用散点测量BARC厚度

    公开(公告)号:US06558965B1

    公开(公告)日:2003-05-06

    申请号:US09901702

    申请日:2001-07-11

    IPC分类号: H01L2166

    摘要: A method of forming a semiconductor device is described. A bottom anti-reflective coating (BARC) is formed in a plurality of holes and on a first surface of a layer of a semiconductor device. A scatterometry measurement on at least a portion of the BARC is performed to produce measurement diffraction data. A thickness of the BARC in the plurality of holes is predicted by comparing the first diffraction data to a model of diffraction data to provide a predicted thickness, tp, and it is determined if the predicted thickness, tp, is within a target thickness range, &Dgr;td. The forming of the BARC is controlled in response to the prediction of the BARC thickness. A corresponding thickness control device for controlling the BARC thickness is also disclosed.

    摘要翻译: 描述形成半导体器件的方法。 底部抗反射涂层(BARC)形成在多个孔中以及在半导体器件的层的第一表面上。 执行至少一部分BARC的散射测量以产生测量衍射数据。 通过将第一衍射数据与衍射数据的模型进行比较以提供预测厚度tp来预测多个孔中的BARC的厚度,并且确定预测厚度tp是否在目标厚度范围内, DELTAtd。 响应于BARC厚度的预测,控制BARC的形成。 还公开了用于控制BARC厚度的相应的厚度控制装置。