Heavy copper PCBs are manufactured with 4 ounces or more of copper on each layer. 4 ounce copper PCBs are most commonly used in commercial products. The concentration of copper can be as high as 200 ounces per square foot.
1. It can reduce the cost of HDI PCB: When the density of PCB increases to more than eight-layer board, it is manufactured with HDI, and its cost will be lower than that of the traditional complex pressing process.
The continuous growth of mobile phone production is driving the demand for HDI boards. China plays an important role in the world's mobile phone manufacturing industry. Since Motorola fully adopted HDI boards to manufacture mobile phones in 2002, more than 90% of mobile phone motherboards have adopted HDI boards. A research report released by market research company In-Stat in 2006 predicted that in the next five years, global mobile phone production will continue to grow at a rate of about 15%. By 2011, global mobile phone sales will reach 2 billion units.
HDI is widely used in mobile phones, digital (camera) cameras, MP3, MP4, notebook computers, automotive electronics and other digital products, among which mobile phones are the most widely used. HDI boards are generally manufactured by the build-up method.
HDI in HDI Board is the abbreviation of High Density Interconnector. It is a kind of (technology) for producing printed circuit boards. It uses micro-blind and buried via technology for a circuit board with a relatively high line distribution density. HDI is a compact product designed for small-capacity users.
Multilayer boards were invented in 1961. Its production method is generally to make the inner layer graphics first, and then use the printing and etching method to make a single-sided or double-sided substrate, and incorporate it into the designated interlayer, and then heat, press and bond it. As for the subsequent drilling, It is the same as the plated through-hole method of the double-sided board.
