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    • 11. 发明授权
    • Novolak resin precursor, novolak resin and positive photoresist composition containing the novolak resin
    • 酚醛清漆树脂前体,酚醛清漆树脂和含有酚醛清漆树脂的正性光致抗蚀剂组合物
    • US06207788B1
    • 2001-03-27
    • US09122177
    • 1998-07-24
    • Ken MiyagiKousuke DoiRyuusaku TakahashiHidekatsu KoharaToshimasa Nakayama
    • Ken MiyagiKousuke DoiRyuusaku TakahashiHidekatsu KoharaToshimasa Nakayama
    • C08G1404
    • G03F7/0236
    • A novolak resin precursor is composed of bonded phenolic moieties, one of the hydrogen atoms in the o- or p-positions relative to the hydroxy group of each phenolic moiety is substituted with an alkyl or alkenyl group having 1 to 3 carbon atoms, and the other two hydrogen atoms are bonded through methylene bonds. The content of ortho—ortho bonding is 30 to 70% relative to the number of total methylene bonds and the weight average molecular weight of the precursor is 300 to 10,000. A novolak resin is obtained from this precursor, and a positive photoresist composition comprises this novolak resin. The invention provides a positive photoresist composition that comprises less binuclear compounds, suppresses scum formation, is excellent in terms of definition and coating performance and provides a resist pattern having satisfactory heat resistance.
    • 酚醛清漆树脂前体由键合的酚部分组成,相对于每个酚部分的羟基的邻位或对位中的氢原子之一被具有1至3个碳原子的烷基或烯基取代,并且 其他两个氢原子通过亚甲基键键合。 邻位键合的含量相对于总亚甲基的数量为30〜70%,前体的重均分子量为300〜10000。 从该前体获得酚醛清漆树脂,正性光致抗蚀剂组合物包含该酚醛清漆树脂。 本发明提供一种正光致抗蚀剂组合物,其包含较少的双核化合物,抑制浮渣形成,在定义和涂布性能方面优异,并提供具有令人满意的耐热性的抗蚀剂图案。
    • 17. 发明授权
    • Method for forming a resist pattern on a substrate surface and a
scum-remover therefor
    • 在基板表面上形成抗蚀剂图案的方法和用于其的浮渣除去器
    • US4873177A
    • 1989-10-10
    • US229762
    • 1988-08-05
    • Hatsuyuki TanakaYoshiyuki SatoHidekatsu KoharaToshimasa Nakayama
    • Hatsuyuki TanakaYoshiyuki SatoHidekatsu KoharaToshimasa Nakayama
    • G03F7/32
    • G03F7/322
    • The pattern-wise photoresist layer formed on the surface of a substrate according to the inventive method is imparted with a greatly improved resolving power as a result of complete removal of the scum residua left after the development treatment. Namely, the positive-working photoresist layer formed on the substrate surface is exposed pattern-wise to actinic rays, developed with a developer solution which is typically a 2-7% aqueous solution of a quaternary ammonium hydroxide and then rinsed with a scum-remover solution which is a mixture of 100 parts of a 0.1-1.5% aqueous solution of a quaternary ammonium hydroxide and 1-30 parts of a water-miscible organic solvent and capable of dissolving away the scum residua in the pattern-wise photoresist layer without affecting the quality of the photoresist pattern reproduction.
    • 根据本发明方法形成在基材表面上的图案光致抗蚀剂层由于在显影处理后完全除去剩余的浮渣残留物而赋予极大改进的分辨能力。 也就是说,形成在基板表面上的正性光致抗蚀剂层以图案方式暴露于光化学射线,用显影剂溶液显影,显影剂溶液通常为2-7%氢氧化季铵水溶液,然后用浮渣除去剂 溶液,其为100份0.1-1.5%的季铵氢氧化物水溶液和1-30份水混溶性有机溶剂的混合物,并且能够将浮渣残留物溶解在图案化光致抗蚀剂层中而不影响 光刻胶图案再现的质量。