Multi-layer printed circuit board, design method thereof, and final product of mainboard

Abstract

The invention discloses a multi-layered printed circuit board and a design method thereof and a terminal product motherboard, which are invented for solving the problems that the space occupied by through holes can be saved, and the interconnection density can be improved. In the multilayered printed circuit board, the terminal pad center distance of the signal communication through holes between two different interlamination insulating layers at the position of replacing layers is larger than the terminal pad radius of any one of the signal communication through holes thereof, and less than the sum of the terminal pad radius of the two signal communication through holes. The terminal product motherboard adopts the multilayered printed circuit board; the design method of the multilayered printed circuit board comprises the steps that the terminal pad center distance of the two adjacent signal communication through holes is punched in a simulation model, the terminal pad center distance is larger than any one of the terminal pad radius thereof, and less than the replaced layer signal communication through hole of the sum of the terminal pad radius of the two signal communication through holes. The embodiment of the invention is applied in the manufacture and the design of the multilayered printed circuit board.

Description

technical field [0001] The invention relates to the field of integrated electronics, in particular to a multilayer printed circuit board and a design method thereof. Background technique [0002] The requirements for miniaturization, light weight and low cost of modern electronic devices are constantly increasing, which promotes the rapid development of microelectronic integration technology, and various new technologies such as high density interconnection HDI (High Density Interconnection) continue to emerge. [0003] High-density interconnection HDI substrate is defined as a substrate with a higher connection density per unit area than a general printed circuit board PCB (Printed CircuitBoard). Compared with ordinary PCBs, the line width and line spacing of high-density interconnect HDI substrates are finer. [0004] Using a multilayer interconnection design can reduce the area of ​​the printed circuit board. A multilayer printed circuit board is a multilayer structure ...

AI Technical Summary

Problems solved by technology

[0008] In the process of implementing the present invention, the inventor found that the prior art has at least the following problems: in the HDI design of high-density radio frequency single board, when the signal connection via hole when the line is changed layer adopts the non-stacked via design, the via hole occupies There is a lot of space on the single board, so that the utilization rate of the PCB board space is not high

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