Preparation method of copper surface super-roughening surface treating agent suitable for 5G communication

Abstract

The invention discloses a preparation method of a copper surface super-roughening surface treating agent suitable for 5G communication, and relates to the technical field of 5G communication. The super-roughening agent takes a buffer solution formed by an organic acid and a salt solution thereof as a medium, the pH value of the buffer solution is 2-4, and the solution of the super-roughening agentcomprises organic copper, formic acid, sodium formate and sodium chloride. According to the preparation method of the copper surface super-roughening surface treating agent suitable for the 5G communication, a mode that the copper surface is firstly covered with a polymeric membrane with a net-shaped structure and a selective inward drilling is carried out is adopted, so that an in-copper-surfaceroughening structure is formed, the microscopic surface area after roughening is increased, the binding force with an insulating layer covered with the copper surface in a post-processing procedure is improved, then the polymeric membrane is stripped by using a post-treatment agent, and meanwhile, the roughened copper tip is cut by using the function of the post-treatment agent for reversely etching copper, so that the copper at the tip is greatly reduced, the discharge of the copper tip is reduced, and the loss of signals is reduced.

Description

technical field [0001] The invention relates to the technical field of 5G communication, in particular to a preparation method of an ultra-roughening surface treatment agent suitable for 5G communication copper surface. Background technique [0002] 5G communication requires extremely thin lines, fast transmission speed on the copper surface, and low signal loss. Then, the copper surface must have excellent bonding force with the insulating layer on the copper surface, but achieving the above two points is a very contradictory problem. a. Theoretically, transmission means less signal loss, and the copper surface naturally needs to be smooth, which is conducive to the transmission of electronic signals. The smooth surface reduces tip discharge and signal loss. b. The smooth surface has a bonding force for the copper covering the insulating layer. Unfavorable problem, in order to improve the bonding force, the copper surface needs to be roughened. In order to solve the contra...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the existing technology, the present invention provides a preparation method suitable for super-roughening surface treatment agent on copper sur...