-
公开(公告)号:US20070178688A1
公开(公告)日:2007-08-02
申请号:US11341302
申请日:2006-01-27
IPC分类号: H01L21/44
CPC分类号: H05K3/3484 , H01L21/4853 , H01L23/49816 , H01L24/11 , H01L24/12 , H01L2224/0381 , H01L2224/05571 , H01L2224/05573 , H01L2224/05624 , H01L2224/114 , H01L2224/11552 , H01L2224/116 , H01L2224/11901 , H01L2224/1308 , H01L2224/13082 , H01L2224/13099 , H01L2224/81011 , H01L2924/00013 , H01L2924/01006 , H01L2924/01013 , H01L2924/01029 , H01L2924/01033 , H01L2924/01078 , H01L2924/01082 , H01L2924/01322 , H01L2924/014 , H01L2924/19043 , H05K3/3463 , H05K2201/10992 , H05K2203/0425 , H05K2203/043 , H05K2203/0485 , H05K2203/1476 , H01L2924/00014
摘要: A method for forming multi-layer bumps on a substrate includes depositing an adhesive or a flux on the substrate, depositing a first metal powder on the adhesive, and melting or reflowing the adhesive and first metal powder to form first bumps. An adhesive or a flux and a second metal powder are then deposited on the first bumps, and melted to form second bumps on the first bumps to form multi-layer bumps. The multi-layer bumps are formed without the need for any wet chemicals.
摘要翻译: 在基板上形成多层凸块的方法包括在基板上沉积粘合剂或助熔剂,在粘合剂上沉积第一金属粉末,熔化或回流粘合剂和第一金属粉末以形成第一凸块。 然后将粘合剂或助熔剂和第二金属粉末沉积在第一凸块上,并熔化以在第一凸块上形成第二凸块以形成多层凸块。 形成多层凸块,而不需要任何湿化学品。