Development of the giga-hertz band printed circuit board utilizing ultraviolet laser irradiation and atmospheric plasma treatment

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The aim of this study is to develop a surface modification technique that improve the adhesion of Poly-tetrafluoroethylene (PTFE), as kept the smoothness of adhering interface of PTFE and the other material. And it aimed in chemical-absorption operation of terminated functional groups of the self-assembled monolayer (SAM). Therefore, we formed amino-SAM on the PTFE surface which have made hydrophilic by irradiating atmosphere pressure plasma, and examined about the adhesion of PTFE and the plating film. Then, we investigated a condition of the atmosphere pressure plasma irradiation and a condition of the forming of amino-SAM in order to improving the adhesion strength. And, it confirmed the possibility of fully-additive process that an electroless copper plating film is formed like a pattern of the circuit by irradiating an ultraviolet laser.