Sulfonium salt, photoacid generator, curable composition, and resist composition

    公开(公告)号:US11926581B2

    公开(公告)日:2024-03-12

    申请号:US17047446

    申请日:2019-04-09

    申请人: SAN-APRO LTD.

    摘要: The sulfonium salt has high photosensitivity to i-rays and high compatibility with cationically polymerizable compounds such as epoxy compounds, and is excellent storage stability in formulations containing such compounds. The sulfonium salt is represented by general formula (1). In formula (1), R represents an alkyl group or an aryl group; substituents, R1 to R5, each independently represent an alkyl group, a hydroxy group, an alkoxy group, an aryl group, an aryloxy group, a hydroxy(poly)alkyleneoxy group, or a halogen atom; R6 to R9 each independently represent an alkyl group, an aryl group, or a hydrogen atom; m1 to m5 each represent the number of occurrences of each of R1 to R5, m1 and m4 represent an integer of 0 to 3, m2 and m5 represent an integer of 0 to 4, m3 represents an integer of 0 to 5, and X− represents a monovalent polyatomic anion.

    PHOTORESIST UNDERLAYER AND METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE

    公开(公告)号:US20230393474A1

    公开(公告)日:2023-12-07

    申请号:US18231447

    申请日:2023-08-08

    摘要: A method of manufacturing a semiconductor device includes forming a photoresist underlayer including a photoresist underlayer composition over a semiconductor substrate and forming a photoresist layer comprising a photoresist composition over the photoresist underlayer. The photoresist layer is selectively exposed to actinic radiation, and the photoresist layer is developed to form a pattern in the photoresist layer. The photoresist underlayer composition includes: a first polymer having one or more of pendant acid-labile groups and pendant epoxy groups, a second polymer having one or more crosslinking groups, an acid generator, a quencher or photodecomposable base, and a solvent. The photoresist underlayer composition includes 0 wt. % to 10 wt. % of the quencher or photodecomposable base based on a total weight of the first and second polymers.

    Photoresist formulation
    30.
    发明授权

    公开(公告)号:US11815812B2

    公开(公告)日:2023-11-14

    申请号:US17538384

    申请日:2021-11-30

    IPC分类号: G03F7/031 G03F7/09 H01L21/027

    摘要: A planarization layer and method therefor. The planarization layer has a thickness ranging from about 2 to about 3 microns, and contains from about 8.0 to about 8.5 wt. % photoacid generator; from about 2 to about 3.6 wt. % photoinitiator; from about 0.35 to about 0.5 wt. % green dye; from about 35 to about 46 wt. % multifunctional epoxy compound; from about 35 to about 50 wt. % of one or more difunctional epoxy compounds; and from about 1 to about 2.6 wt. % silane adhesion promoter, wherein all weight percent is based on a total weight of the layer devoid of solvent.