Method for forming patterned photoresist

    公开(公告)号:US11886121B2

    公开(公告)日:2024-01-30

    申请号:US16885077

    申请日:2020-05-27

    CPC classification number: G03F7/36 H01L21/0274

    Abstract: A method of forming a patterned photoresist layer includes the following operations: (i) forming a patterned photoresist on a substrate; (ii) forming a molding layer covering the patterned photoresist; (iii) reflowing the patterned photoresist in the molding layer; and (iv) removing the molding layer from the reflowed patterned photoresist. In some embodiments, the molding layer has a glass transition temperature that is greater than or equal to the glass transition temperature of the patterned photoresist. In yet some embodiments, the molding layer has a glass transition temperature that is 3° C.-30° C. less than the glass transition temperature of the patterned photoresist.

    Photosensitive Middle Layer
    3.
    发明申请

    公开(公告)号:US20200073243A1

    公开(公告)日:2020-03-05

    申请号:US16119880

    申请日:2018-08-31

    Abstract: A method includes providing a substrate; forming a bottom layer over the substrate; forming a middle layer over the bottom layer, a top surface of which including a photosensitive moiety having a first end anchored in the middle layer and a second end extending away from the top surface of the middle layer; forming a photoresist layer over the middle layer; exposing the photoresist layer to a radiation source; and developing the photoresist layer to form a pattern. The photosensitive moiety, which includes one of a photo-acid generator (PAG), a photo-base generator (PBG), photo-decomposable base (PDB), or photo-decomposable quencher (PDQ), may be anchored to a polymer backbone forming the middle layer via one or more linker groups. A distance by which the photosensitive moiety extends into the photoresist layer may be determined by a length of the linker group.

    Photoresist composition and method of forming photoresist pattern

    公开(公告)号:US11971659B2

    公开(公告)日:2024-04-30

    申请号:US16584234

    申请日:2019-09-26

    Abstract: A photoresist composition includes a conjugated resist additive, a photoactive compound, and a polymer resin. The conjugated resist additive is one or more selected from the group consisting of a polyacetylene, a polythiophene, a polyphenylenevinylene, a polyfluorene, a polypryrrole, a polyphenylene, and a polyaniline. The polyacetylene, polythiophene, polyphenylenevinylene, polyfluorene, polypryrrole, the polyphenylene, and polyaniline includes a substituent selected from the group consisting of an alkyl group, an ether group, an ester group, an alkene group, an aromatic group, an anthracene group, an alcohol group, an amine group, a carboxylic acid group, and an amide group. Another photoresist composition includes a polymer resin having a conjugated moiety and a photoactive compound. The conjugated moiety is one or more selected from the group consisting of a polyacetylene, a polythiophene, a polyphenylenevinylene, a polyfluorene, a polypryrrole, a polyphenylene, and a polyaniline.

    Photosensitive middle layer
    5.
    发明授权

    公开(公告)号:US11022885B2

    公开(公告)日:2021-06-01

    申请号:US16119880

    申请日:2018-08-31

    Abstract: A method includes providing a substrate; forming a bottom layer over the substrate; forming a middle layer over the bottom layer, a top surface of which including a photosensitive moiety having a first end anchored in the middle layer and a second end extending away from the top surface of the middle layer; forming a photoresist layer over the middle layer; exposing the photoresist layer to a radiation source; and developing the photoresist layer to form a pattern. The photosensitive moiety, which includes one of a photo-acid generator (PAG), a photo-base generator (PBG), photo-decomposable base (PDB), or photo-decomposable quencher (PDQ), may be anchored to a polymer backbone forming the middle layer via one or more linker groups. A distance by which the photosensitive moiety extends into the photoresist layer may be determined by a length of the linker group.

Patent Agency Ranking