Electronic device and manufacturing method of electronic device

A manufacturing method of an electronic device that is used around a neutralization target object and that includes an electric part, an interconnection portion transmitting electric power of a high voltage power supply to the electric part, and a housing accommodating the electric part and the interconnection portion, the manufacturing method comprising:

• a film formation process of forming a film, which is made of an electrostatic diffusive coating material having a surface resistivity of equal to or higher than 104Ω/□ and equal to or lower than 1011Ω/□, on a surface of a layer that has an insulation property or a conductive property, for at least one of the housing and a cover portion, and
• an assembling process of obtaining the electronic device by assembling constituent parts of the electronic device by using at least one of the cover portion, which has a surface resistivity of equal to or higher than 104Ω/□ and equal to or lower than 1011Ω/□ and covers at least a part of the electric part, and the housing, which has a surface resistivity of equal to or higher than 104Ω/□ and equal to or lower than 1011Ω/□.