LITHOGRAPHIC APPARATUS AND METHOD
    25.
    发明专利

    公开(公告)号:SG186072A1

    公开(公告)日:2013-01-30

    申请号:SG2012086955

    申请日:2011-03-17

    Abstract: A lithographic apparatus includes a radiation source configured to produce a radiation beam, and a support configured to support a patterning device. The patterning device is configured to impart the radiation beam with a pattern to form a patterned radiation beam. A chamber is located between the radiation source and patterning device. The chamber contains at least one optical component configured to reflect the radiation beam, and is configured to permit radiation from the radiation source to pass therethrough. A membrane (44) is configured to permit the passage of the radiation beam, and to prevent the passage of contamination particles (54) through the membrane. A particle trapping structure (52) is configured to permit gas to flow along an indirect path from inside the chamber to outside the chamber. The indirect path is configured to substantially prevent the passage of contamination particles (58) from inside the chamber to outside the chamber.

    LITHOGRAPHIC APPARATUS AND SPECTRAL PURITY FILTER

    公开(公告)号:SG183528A1

    公开(公告)日:2012-10-30

    申请号:SG2012063822

    申请日:2011-02-03

    Abstract: A reflector includes a multi layer mirror structure configured to reflect radiation at a first wavelength, and one or more additional layers. The absorbance and refractive index at a second wavelength of the multi layer mirror structure and the one or more additional layers, and the thickness of the multi layer mirror structure and the one or more additional layers, are configured such that radiation of the second wavelength which is reflected from a surface of the reflector interferes in a destructive manner with radiation of the second wavelength which is reflected from within the reflector.

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