Method of fabricating fin structure

    公开(公告)号:US09966263B1

    公开(公告)日:2018-05-08

    申请号:US15587228

    申请日:2017-05-04

    IPC分类号: H01L21/033

    摘要: A method of fabricating fin structure is provided. A patterned catalyst layer and a patterned passivation layer extending along a first direction are formed on a substrate. The patterned passivation layer is located on the patterned catalyst layer. A carbon layer is formed on at least one side of the patterned catalyst layer and includes hollow carbon tubes arranged along the first direction. Each hollow carbon tube extends along a second direction. A removal process is performed to remove the top and a portion of the bottom of each hollow carbon tube closest to the substrate, so that remnants are left and serve as a mask layer. Two adjacent remnants form a stripe pattern extending along the second direction. The patterned passivation layer and the patterned catalyst layer are removed. The pattern of the mask layer is transferred to the substrate to form fin structures. The mask layer is removed.

    Method of planarizing substrate surface

    公开(公告)号:US10103034B2

    公开(公告)日:2018-10-16

    申请号:US15678134

    申请日:2017-08-16

    摘要: A method of planarizing a substrate surface is disclosed. A substrate having a major surface of a material layer is provided. The major surface of the material layer comprises a first region with relatively low removal rate and a second region of relatively high removal rate. A photoresist pattern is formed on the material layer. The photoresist pattern masks the second region, while exposes at least a portion of the first region. At least a portion of the material layer not covered by the photoresist pattern is etched away. A polish stop layer is deposited on the material layer. A cap layer is deposited on the polish stop layer. A chemical mechanical polishing (CMP) process is performed to polish the cap layer.

    METHOD OF PLANARIZING SUBSTRATE SURFACE
    10.
    发明申请

    公开(公告)号:US20180012772A1

    公开(公告)日:2018-01-11

    申请号:US15678134

    申请日:2017-08-16

    摘要: A method of planarizing a substrate surface is disclosed. A substrate having a major surface of a material layer is provided. The major surface of the material layer comprises a first region with relatively low removal rate and a second region of relatively high removal rate. A photoresist pattern is formed on the material layer. The photoresist pattern masks the second region, while exposes at least a portion of the first region. At least a portion of the material layer not covered by the photoresist pattern is etched away. A polish stop layer is deposited on the material layer. A cap layer is deposited on the polish stop layer. A chemical mechanical polishing (CMP) process is performed to polish the cap layer.