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    • 7. 发明申请
    • POSITION MEASUREMENT OF OPTICAL ELEMENTS IN A LITHOGRAPHIC APPARATUS
    • 光刻设备中光学元件的位置测量
    • WO2017202976A1
    • 2017-11-30
    • PCT/EP2017/062643
    • 2017-05-24
    • CARL ZEISS SMT GMBH
    • LOOPSTRA, ErikVAN DER PASCH, Engelbertus Antonius FranciscusBLEIDISTEL, SaschaCOSIJN, Suzanne
    • G03F7/20
    • According to an embodiment of the invention there is provided a lithographic apparatus, comprising a projection system (PS) comprising a plurality of optical elements (505-535; 605-640), the plurality of optical elements (505-535; 605-640) configured to project a beam (B, 26) of radiation onto a radiation sensitive substrate (W). The lithographic apparatus also comprises a metrology frame structure (500; 600), comprising a part (540-570; 660-695) of one or more optical element measurement systems to measure the position and/or orientation of at least one of the optical elements (505-535; 605-640). The plurality of optical elements (505-535; 605-640), a patterning device stage (MT), and a substrate stage (WT) are arranged such that in a two dimensional view on the projection system (PS), a rectangle (ORE) is defined such that it envelops the plurality of optical elements (505-535; 605-640), the patterning device stage (MT), and the substrate stage (WT). The rectangle (ORE) is further defined as small as possible, wherein the metrology frame structure (500; 600) is positioned within the rectangle (ORE).
    • 根据本发明的实施例,提供了一种光刻设备,包括:投影系统(PS),其包括多个光学元件(505-535; 605-640),所述多个光学元件 (505-535; 605-640),其被配置为将辐射束(B,26)投影到辐射敏感衬底(W)上。 该光刻设备还包括计量框架结构(500; 600),该计量框架结构包括一个或多个光学元件测量系统的一部分(540-570; 660-695),以测量光学元件中的至少一个的位置和/或取向 元素(505-535; 605-640)。 多个光学元件(505-535; 605-640),图案形成装置台(MT)和衬底台(WT)被布置为使得在投影系统(PS)上的二维视图中,矩形 ORE)被定义为使得其包围多个光学元件(505-535; 605-640),图案形成装置台(MT)和衬底台(WT)。 矩形(ORE)被进一步限定为尽可能小,其中度量框架结构(500; 600)位于矩形(ORE)内。
    • 10. 发明申请
    • PROJECTION EXPOSURE APPARATUS COMPRISING A MEASURING SYSTEM FOR MEASURING AN OPTICAL ELEMENT
    • 包含用于测量光学元件的测量系统的投影曝光装置
    • WO2013113480A1
    • 2013-08-08
    • PCT/EP2013/000200
    • 2013-01-23
    • CARL ZEISS SMT GMBH
    • BLEIDISTEL, SaschaHARTJES, JoachimGRUNER, Toralf
    • G02B27/00G01N21/41G03F7/20
    • G03F7/706G01K11/00G01M11/0242G01M11/0271G03F7/70141G03F7/70258G03F7/7085G03F7/70891
    • A projection exposure apparatus (10) for microlithography comprises a measuring system (50) for measuring an optical element of the projection exposure apparatus. The measuring system (50) comprises: an irradiation device (54), which is configured to radiate measuring radiation (62) in different directions (64) onto the optical element (20), such that the measuring radiation (62) covers a respective optical path length (68) within the optical element (20) for the different directions (64) of incidence, a detection device (56), which is configured to measure, for the respective direction (64) of incidence, the corresponding optical path length covered by the measuring radiation (62) in the optical element (20), and an evaluation device, which is configured to determine a spatially resolved distribution of the refractive index in the optical element (20) by computed-tomographic back projection of the measured path lengths taking account of the respective direction of incidence.
    • 用于微光刻的投影曝光装置(10)包括用于测量投影曝光装置的光学元件的测量系统(50)。 测量系统(50)包括:照射装置(54),其配置成将不同方向(64)上的测量辐射(62)辐射到光学元件(20)上,使得测量辐射(62)覆盖相应的 用于不同方向(64)入射的光学元件(20)内的光路长度(68);检测装置(56),被配置为针对相应的入射方向(64)测量相应的光路 由所述光学元件(20)中的所述测量辐射(62)覆盖的长度以及评估装置,其被配置为通过所述光学元件(20)的计算机断层摄影反投影来确定所述光学元件(20)中的折射率的空间分辨分布 测量的路径长度考虑到相应的入射方向。