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    • 4. 发明授权
    • Process of manufacturing a printed circuit board with plated landless
through-holes by the use of a filling material
    • 通过使用填充材料制造具有镀覆无通孔的印刷电路板的工艺
    • US5916736A
    • 1999-06-29
    • US637888
    • 1996-04-25
    • Katsuo DoiSatoshi MiyayamaToshikazu Oda
    • Katsuo DoiSatoshi MiyayamaToshikazu Oda
    • C08F2/50C08K5/12G03F7/027G03F7/032G03F7/095H05K3/00H05K3/06H05K3/42G03C5/00
    • H05K3/0094C08K5/12G03F7/027G03F7/032G03F7/0955H05K2201/0209H05K2201/0959H05K2203/0759H05K3/0076H05K3/064H05K3/427Y10T428/24917
    • A process of manufacturing a printed circuit board having plated landless through-holes involves filling a radiation curable putty material in through-holes plated with copper in a substrate, exposing the material under radiation of light in order to cure the material, placing a liquid resist on the substrate surface, covering a mask over the resist, exposing the resist layer by using a mask having a circuit pattern, developing the resist, etching the substrate surface, and removing the cured putty material in the through-holes and the remaining portion of the resist. The filling material composition used in the process comprises hydrophthalic mono ester compound as a component (A), a catalyst for promoting photo polymerization of a vinyl group in the mono ester as a component (B), a highly transparent rosin having a Hazen color tone of 300 or less for the improvement of cure depth of the material after exposure of light as a component (C), and a powder of at least one extender selected from polyethelene, nylon, polyester, talc, silica, aluminum hydroxide, titanium oxide, barium sulfate, kaolinite, calcium carbonate, and phthalocyanine as a component (D).
    • 一种制造具有电镀无置入通孔的印刷电路板的方法包括在基板上镀铜的通孔中填充可辐射固化油灰材料,在光照射下曝光该材料以固化该材料, 在基板表面上,在抗蚀剂上覆盖掩模,通过使用具有电路图案的掩模曝光抗蚀剂层,显影抗蚀剂,蚀刻基板表面,以及去除通孔中的固化的腻子材料,以及其余部分 抗拒。 该方法中使用的填充材料组合物包含作为组分(A)的亲水性单酯化合物,用于促进作为组分(B)的单酯中的乙烯基的光聚合的催化剂,具有Hazen色调的高透明松香 为了提高作为(C)成分的光的曝光后的材料的固化深度,为300以下的粉末,以及选自聚乙烯,尼龙,聚酯,滑石,二氧化硅,氢氧化铝,氧化钛, 硫酸钡,高岭石,碳酸钙和酞菁作为组分(D)。