Methods for forming a photo-mask and a semiconductor device

    公开(公告)号:US11133187B2

    公开(公告)日:2021-09-28

    申请号:US16046069

    申请日:2018-07-26

    摘要: A method for forming a photo-mask includes providing a first pattern, wherein the first pattern includes a first light-transmitting region and a first light-shielding region; transforming the first pattern into a second pattern, wherein the second pattern includes a second light-transmitting region and a second light-shielding region, the second light-transmitting region is located within range of the first light-transmitting region, and the second light-transmitting region has an area which is smaller than that of the first light-transmitting region, the second light-shielding region includes the entire region of the first light-shielding region, and the second light-shielding region has an area which is greater than that of the first light-shielding region; and forming the second pattern on a photo-mask substrate to form a photo-mask, wherein the photo-mask is used in an ion implantation process of a material layer.

    Photomask laser etch
    7.
    发明授权

    公开(公告)号:US10802392B2

    公开(公告)日:2020-10-13

    申请号:US16510855

    申请日:2019-07-12

    发明人: Banqiu Wu Eli Dagan

    摘要: Embodiments described herein relate to apparatus and methods for removing one or more films from a photomask to create a black border and one or more pellicle anchor areas thereon. A photomask substrate is exposed by removing the one or more films in the black border and pellicle anchor areas. The black border prevents a pattern on the photomask from overlapping a pattern on a substrate being processed. To create the black border and pellicle anchor areas, a laser beam is projected through a lens and focused on a surface of the films. The films are ablated by the laser beam without damaging the photomask substrate.

    Method and device for characterizing a mask for microlithography

    公开(公告)号:US10698318B2

    公开(公告)日:2020-06-30

    申请号:US16026675

    申请日:2018-07-03

    摘要: The invention relates to a method and a device for characterizing a mask for microlithography. In a method according to the invention, structures of a mask intended for use in a lithography process in a microlithographic projection exposure apparatus are illuminated by an illumination optical unit, wherein the mask is imaged onto a detector unit by an imaging optical unit, wherein image data recorded by the detector unit are evaluated in an evaluation unit. In this case, for emulating an illumination setting predefined for the lithography process in the microlithographic projection exposure apparatus, the imaging of the mask onto the detector unit is carried out in a plurality of individual imagings which differ from one another with regard to the illumination setting set in the illumination optical unit or the polarization-influencing effect set in the imaging optical unit.