• 专利标题:   Photomask used in semiconductor industry, comprises substrate, and polymer layer over surface of substrate, where polymer layer comprises thermoplastic polymer and hydrophobic layer, and thermoplastic polymer is set between hydrophobic layer and surface of photomask.
  • 专利号:   US2022276552-A1
  • 发明人:   LIN C, WEN C, LIU T H
  • 专利权人:   TAIWAN SEMICONDUCTOR MFG CO LTD
  • 国际专利分类:   B32B027/30, B32B027/40, C09J201/08, C09J007/30, G03F001/24, G03F001/48, G03F001/60
  • 专利详细信息:   US2022276552-A1 01 Sep 2022 G03F-001/48 202280 English
  • 申请详细信息:   US2022276552-A1 US749167 20 May 2022
  • 优先权号:   US827488P, US749167

▎ 摘  要

NOVELTY - Photomask 200 comprises substrate 210, and polymer layer over a surface of the substrate, where the polymer layer comprises thermoplastic polymer and hydrophobic layer. The thermoplastic polymer is set between hydrophobic layer and surface of the photomask. USE - Photomask used in semiconductor industry. ADVANTAGE - The photomask has thermoplastic layer comprising polymer having a crystalline-non crystalline conversion temperature in a range of 50-60℃, and improved efficiency of recovering scratches. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for fabricating a semiconductor structure with an extreme ultraviolet (EUV) photomask, which involves: (1) placing a substrate over a supporter; (2) forming a layer over the substrate; and (3) patterning the layer with an actinic radiation reflected off an EUV photomask, where a protective film is disposed on the EUV photomask, and the protective film comprises a thermoplastic polymer and hydrophobic layer, where thermoplastic polymer is between the hydrophobic layer and surface of the photomask. DESCRIPTION OF DRAWING(S) - The drawing shows front perspective view of a photomask. 200Photomask 200aFront side 210Substrate 215Patterned layer 222Protection layer