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    • 4. 发明公开
    • 금도금액
    • 镀金解决方案
    • KR1020060119691A
    • 2006-11-24
    • KR1020050123911
    • 2005-12-15
    • 니혼 엘렉트로플레이팅 엔지니어스 가부시키가이샤
    • 소네타카유키츠유키준코
    • C25D3/48
    • C25D3/48C25D21/12
    • A non-cyan based gold plating solution which is excellent in capability for forming a bump shape, has good adhesion with an underlayer even in case of performing heat treatment, and is capable of carrying out gold plating with a proper hardness in order to secure adhesion of a bump is provided. A gold plating solution contains sodium gold sulfite or its ethylene diamine complex with a gold concentration of 5 to 20 g/L, sodium sulfite with a gold concentration of 10 to 100 g/L, and a thallium with a thallium concentration of 1 to 50 ppm, wherein the gold plating solution contains 0.1 to 50 g/L of potassium sulfite. The gold plating solution has a pH of 6.0 to 10.0 and a liquid specific gravity of 10 to 30‹Be'(degree Baume). As a gold plating method using a gold plating solution containing sodium gold sulfite or its ethylene diamine complex with a gold concentration of 5 to 20 g/L, sodium sulfite with a gold concentration of 10 to 100 g/L, and a thallium with a thallium concentration of 1 to 50 ppm, wherein the gold plating solution contains 0.1 to 50 g/L of potassium sulfite, the gold plating method comprises performing electroplating under conditions that the plating solution has a current density of 0.1 to 2.0 A/dm^2 and a temperature of 40 to 70 deg.C.
    • 具有优异的凸起形状能力的非青色镀金液,即使在进行热处理的情况下也与底层具有良好的粘附性,并且能够以适当的硬度进行镀金以确保粘合 提供了一个凸块。 镀金液含有金浓度为5〜20g / L的金亚硫酸钠或其乙二胺配合物,金浓度为10〜100g / L的亚硫酸钠,铊浓度为1〜50的铊 ppm,其中镀金液含有0.1〜50g / L的亚硫酸钾。 镀金液的pH为6.0〜10.0,液体比重为10〜30(Beume值)。 作为使用含有金浓度为5〜20g / L的亚硫酸钠或其乙二胺配合物的金电镀溶液的金电镀法,金浓度为10〜100g / L的亚硫酸钠和具有 铊浓度为1〜50ppm,其中镀金液含有0.1〜50g / L的亚硫酸钾,镀金方法包括在电镀液的电流密度为0.1〜2.0A / dm 2的条件下进行电镀 温度为40〜70℃。