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    • 6. 发明申请
    • DEVELOPABLE BOTTOM ANTIREFLECTIVE COATING COMPOSITIONS FOR NEGATIVE RESISTS
    • 可发展的底部防反射涂层组合物
    • WO2013023124A2
    • 2013-02-14
    • PCT/US2012/050267
    • 2012-08-10
    • INTERNATIONAL BUSINESS MACHINES CORPORATIONCHEN, Kuang-jungHOLMES, Steven, J.HUANG, Wu-songLIU, Sen
    • CHEN, Kuang-jungHOLMES, Steven, J.HUANG, Wu-songLIU, Sen
    • G03F7/004G03F7/039G03F7/09C09D133/04
    • G03F7/0382C09J133/14G03F7/091G03F7/094G03F7/095
    • A negative developable bottom antireflective coating (NDBARC) material includes a polymer containing an aliphatic alcohol moiety, an aromatic moiety, and a carboxylic acid moiety. The NDBARC composition is insoluble in a typical resist solvent such as propylene glycol methyl ether acetate (PGMEA) after coating and baking. The NDBARC material also includes a photoacid generator, and optionally a crosslinking compound. In the NDBARC material, the carboxylic acid provides the developer solubility, while the alcohol alone, the carboxylic acid alone, or their combination provides the PGMEA resistance. The NDBARC material has resistance to the resist solvent, and thus, intermixing does not occur between NDBARC and resist during resist coating over NDBARC. After exposure and bake, the lithographically exposed portions of both the negative photoresist (30E) and the NDBARC layer (20E) become insoluble in developer due to the chemically amplified crosslinking of the polymers in negative resist and NDBARC layer in the lithographically exposed portions.
    • 负显影底部抗反射涂层(NDBARC)材料包括含有脂族醇部分,芳族部分和羧酸部分的聚合物。 在涂布和烘烤后,NDBARC组合物不溶于典型的抗蚀剂溶剂如丙二醇甲基醚乙酸酯(PGMEA)中。 NDBARC材料还包括光酸产生剂和任选的交联化合物。 在NDBARC材料中,羧酸提供显影剂溶解性,而单独的醇,单独的羧酸或其组合提供PGMEA抗性。 NDBARC材料对抗蚀剂溶剂具有抗性,因此在NDBARC上抗蚀剂涂覆期间NDBARC和抗蚀剂之间不会发生混合。 在曝光和烘烤之后,由于光刻曝光部分中的负抗蚀剂和NDBARC层中的聚合物的化学放大交联,负光刻胶(30E)和NDBARC层(20E)的光刻曝光部分变得不溶于显影剂。 / p>