Mounting substrate

A mounting substrate on which a semiconductor chip is mounted using a flip chip bonding, comprising:

• a plurality of connection pads to be connected to the semiconductor chip;
• and
• an insulation layer formed in such a manner as to cover the connection pads partially,
• wherein the insulation layer includes a quadrangular first insulation layer having four sides which is formed in such a manner as to correspond to a center of the semiconductor chip and a second insulation layer which is formed so as to surround the first insulation layer such that a space is provided between the first and second insulation layers, and
• wherein the plurality of connection pads include first connection pads which are partially covered by only the first insulation layer and second connection pads which are partially covered by only the second insulation layer,
• wherein each of said four sides of the first insulation layer consist of a first end region, a second end region, and a central region disposed between the first and second end regions, said first and second end regions extending from an intersection of each side with an adjacent side to the central region, and
• wherein each of the first connection pads are disposed only at the central region and each of said second connection pads are disposed only at the first and second end regions.