Patent ID: 6400036
Filing Date: 2002-06-04
Classification: H01L

Abstract:
A flip-chip package structure, which comprises:a first semiconductor chip having an active surface and an inactive surface, with the active surface being formed with a chip-bonding area; wherein a plurality of inner bonding pads are formed in the chip-bonding area, while a plurality of outer bonding pads are formed beyond the chip-bonding area on the active surface; a coating layer formed of the active surface of the first semiconductor chip, with the inner and outer bonding pads being exposed to outside of the coating layer; a flash-barrier structure formed by a portion of the coating layer around the chip-bonding area on the first semiconductor chip to separate the chip-bonding area from the outer bonding pads; a second semiconductor chip electrically coupled to the first semiconductor chip by means of solder bumps to the chip-bonding area on the first semiconductor chip, with a gap existing between the first semiconductor chip and the second semiconductor chip; and an underfill layer formed in the gap between the first semiconductor chip and the second semiconductor chip, and confined within an area surrounded by the flash-barrier structure.