Method for manufacturing multilayer vehicle-mounted flexible printed board

Abstract

The invention relates to a method for manufacturing a multilayer vehicle-mounted flexible printed board. The method comprises the steps that (1) board cutting, pattern transfer and DES line arranging are conducted; (2) an automatic optical detection instrument is used for detection; (3) PF film assembling, primary laminating pretreatment, primary laminating, primary lamination pressing and primary IPQC detection are conducted; (4) secondary laminating pretreatment, secondary laminating, third-time laminating, secondary lamination pressing and secondary IPQC detection are conducted; (5) target punching, drilling and strip separation are conducted; (6) copper plating and full plate electroplating are conducted; (7) DES line arranging, secondary stripping and secondary automatic optical detection instrument detection are conducted; (8) light board electrical testing is conducted; (9) third-time laminating pretreatment, fourth-time laminating, third-time lamination pressing and third-time IPQC detection are conducted; (10) laser cutting, secondary stripping, first PI stiffening plate assembling, fourth-time lamination pressing and fourth-time IPQC detection are conducted; (11) microetching, nickel gold depositing, silk screening and testing are conducted; (12) secondary target punching, forming and micro-adhesive film assembling are conducted; (13) finished product detection is conducted. According to the method for manufacturing the multilayer vehicle-mounted flexible printed board, one-time yield can be improved to about 85%, and rejection rate is lowered to about 15%.

Description

technical field [0001] The invention relates to the technical field of circuit boards, in particular to a method for manufacturing a multilayer vehicle-mounted flexible printed board. Background technique [0002] According to the national development plan, the output value of my country's satellite navigation will reach 400 billion in 2020. At present, the customer requirements for multi-layer vehicle flexible printed boards are very strict, and the core production technology is monopolized by Japan, South Korea, Europe and other countries. Domestic FPC manufacturers produce this type of board. The technology is immature, the quality is unstable, the first-time pass rate of production is about 30%, and the scrap rate is about 70%. The production cost is very high, and mass production cannot be achieved. At present, most of this type of panels rely on imports, which greatly increases the burden on enterprises, resulting in increased costs and low profit margins. Contents of...

AI Technical Summary

Problems solved by technology

[0002] According to the national development plan, the output value of my country's satellite navigation will reach 400 billion in 2020. At present, the customer requirements for multi-layer vehicle flexible printed boards are very strict, and the core production technology is monopolized by Japan, South Korea, Europe and other countries. Domestic FPC manufacturers produce this type of board. The technology is immature, the quality is unstable, the pass rate of the first production is about 30%, the scrap rate is about 70%, the production cost is very high, and mass production cannot be achieved

At present, most of this type of panels rely on imports, which greatly increases the burden on enterprises, resulting in increased costs and low profit margins.