Laser HAZ very narrow, small welding, in particular, can be high melting point of solder materials and dissimilar metals, and do not need to add material. Foreign use of lasers for $ solid welding seam and spot welding, have a very high level. In addition, the use of laser welding of printed circuit Lead, do not need to use flux, heat and reduce the impact on circuit die without influence, thus ensuring the quality of the integrated circuit chip.
Domestic Situation
After more than two decades of efforts in precision laser processing technology and complete sets of equipment, our country has been in the ceramic micro-laser dicing with small metal parts of the laser spot welding, seam welding and welding-gas-tight marking, as well as in areas such as applied, However, precision laser processing technology in high technology, micro-electronics application market a broad line of precision cutting template and etching technology, ceramic and printed circuit board specifications for a variety of sizes through-hole, and blind hole shaped hole, the slot Precision laser processing, is still in the research and development stage, there is no corresponding industrial prototype come out. Domestic users generally use a template or import into Hong Kong commissioned processing, high prices, long a serious impact on product development cycle; In recent years, a small number of foreign companies in China to see the precision of laser processing industry in the huge potential market , Has begun to set up branch offices in China. But the high cost of processing an increase of product costs are still prohibitive for many enterprises.