Patent ID: 7402508

Claim:
A method of manufacturing a bump structure, comprising: forming a liquid-repelling part with a liquid-repelling characteristic for droplets and a liquid-attracting part that is more wettable than the liquid-repelling part for the droplets on an upper surface of an insulating layer, the droplets including a precursor of UV-hardening resin, forming the liquid-repelling part including using a plasma treatment; discharging the droplets onto the liquid-attracting part to form a protruding part precursor; hardening the protruding part precursor by applying UV rays to form a protruding part; forming the protruding part directly on the insulating layer; and forming a conductive layer so as to cover the protruding part, discharging the droplets comprising discharging the droplets directly on the insulating layer without a conductor between the droplets and the insulating layer.