Semiconductor device

A semiconductor device, comprising:

• a first semiconductor chip including a plurality of first bumps formed on a surface thereof;
• and
• an electronic component including a plurality of second bumps formed on a surface thereof, said electronic component being arranged to be opposed to said first semiconductor chip, each of said first bumps of said first semiconductor chip being joined to corresponding one of said second bumps of said electronic component, which are opposed to said first bumps, respectively, and a gap between said first semiconductor chip and said electronic component being encapsulated with an underfill resin,
• wherein a first bumps-formed region having plurality of said first bumps arranged thereon is formed partially on said surface of said first semiconductor chip and a second bumps-formed region having plurality of said second bumps arranged thereon is formed partially on said surface of said electronic component, and
• wherein a protective film is formed on a portion of at least one of the surface of said first semiconductor chip and the surface of said electronic component except said first bumps-formed region and/or said second bumps-formed region.