Patent ID: 8435839

Claim:
A method of manufacturing a semiconductor device, comprising: preparing a first semiconductor chip having a wire face, and at least two second semiconductor chips each having a wire face and each being smaller than said first semiconductor chip, one of the second semiconductor chips having an opposing face that faces an opposing face of another of the second semiconductor chips; placing the wire faces of said second semiconductor chips to face towards said wire face of said first semiconductor chip and flip-chip joining said wire faces of said first and second semiconductor chips so that the wire faces of said second semiconductor chips lies on and above said wire face of said first semiconductor chip; injecting a fill fluid into a first space that is defined above a level of the wire faces of said second semiconductor chips and between the opposing faces of said one and another second semiconductor chips and into second spaces between the flip-chip joined first semiconductor chip and second semiconductor chips, the fill fluid touching the opposing faces of said one and another second semiconductor chips, wherein the fill fluid in the first space has an upper surface that is beneath upper surfaces of the second semiconductor chips; hardening said fill fluid; and after said hardening, sealing the first and second semiconductor chips with a sealing resin, wherein during said injecting, said fill fluid is injected into the first and second spaces through an injection opening of an outlet, having a diameter smaller than a distance between said second semiconductor chips, such that almost a same amount of fill fluid is injected into each respective said second space.