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    • 5. 发明申请
    • Method of joining electronic package capable of prevention for brittle fracture
    • 连接能够预防脆性断裂的电子封装的方法
    • US20080237314A1
    • 2008-10-02
    • US11907528
    • 2007-10-12
    • Jin YuYoung-Kun JeeYong-Ho Ko
    • Jin YuYoung-Kun JeeYong-Ho Ko
    • B23K31/02B23K1/00
    • B23K1/0016B23K2101/34B23K2101/40B23K2103/18H01L2224/0554H01L2224/0557H01L2224/05571H01L2224/05573H01L2224/05647H01L2224/05655H01L2224/13H01L2224/16503H01L2224/8181H01L2924/00014H05K3/244H05K3/3463H01L2224/05599H01L2224/0555H01L2224/0556
    • Disclosed is a method of joining electronic package parts, comprising the steps of: reflowing lead-free solders containing alloy elements on top of each of the electronic package parts having a surface treated with copper or nickel; and mounting the surface treated electronic parts on the lead-free solders then reflowing the lead-free solders to generate intermetallic compound between the lead-free solders and the surface treated portion of each of the electronic parts.Alternatively, the method of joining the electronic package parts according to the present invention comprises the steps of: forming a plating layer made of alloy elements on top of each of the electronic parts having a surface treated with copper or nickel and reflowing lead-free solders; and mounting the surface treated electronic parts on the lead-free solders then reflowing the lead-free solders to allow the alloy elements contained in the plating layer to be diffused into the lead-free solders and generate intermetallic compound between the lead-free solders and the surface treated portion of each of the electronic parts.The present invention can prevent brittle fracture of the electronic package parts by deriving alteration of the intermetallic compounds generated from existing lead-free solders when the electronic package parts of electronic devices are solder joined together, thereby ensuring reliability of the electronic devices.
    • 公开了一种连接电子封装部件的方法,包括以下步骤:在具有用铜或镍处理的表面的每个电子封装部件的顶部上回流含有合金元素的无铅焊料; 并将表面处理的电子部件安装在无铅焊料上,然后回流无铅焊料,以在无铅焊料和每个电子部件的表面处理部分之间产生金属间化合物。 或者,根据本发明的接合电子封装部件的方法包括以下步骤:在具有用铜或镍处理的表面的每个电子部件的顶部上形成由合金元件制成的镀层和回流无铅焊料 ; 并将表面处理的电子部件安装在无铅焊料上,然后回流无铅焊料,使包含在镀层中的合金元素扩散到无铅焊料中,并在无铅焊料与无铅焊料之间产生金属间化合物 每个电子部件的表面处理部分。 本发明可以通过在电子器件的电子封装部件焊接在一起时导致由现有的无铅焊料产生的金属间化合物的变化来防止电子封装部件的脆性断裂,从而确保电子器件的可靠性。