In recent years, the popularity of mobile electronic products has made the development prospects of HDI substrates very bright. Because the scope of use and products are different, their technical requirements are also different, so there are: small HDI circuit boards, high-precision HDI products etc.
HDI circuit board features: After having a higher I/O count, more precise spacing, circuit operation comments and signal rise time will be much faster than ordinary floors. Because the board can use holes in the middle, it can reduce the redundant wiring of the HDI circuit board, reduce the number of layers of the circuit board, and thus reduce the cost of the circuit board.
