Patent ID: 7707713

Claim:
A component-embedded board fabrication method for fabricating a component-embedded board with electronic components embedded within a wiring board, comprising: detecting, before said board is covered with a first insulating layer, actual positions of terminals of a first electronic component formed on a surface of said board; calculating a set of displacements between design positions of terminals of said first electronic component and the actual positions of the terminals of said first electronic component on the surface of said board, and holding said set of displacements as first displacement data; correcting, based on said first displacement data, design data to be used for processing said board after said board is covered with said first insulating layer to form a wiring pattern connected to said first electrical component; forming via holes in the first insulating layer in accordance with the corrected design data, thereby compensating for an actual location of the displaced first electronic component in a subsequent layer; detecting, before said board is covered with a second insulating layer, actual positions of terminals of a second electronic component formed on a surface of said first insulating layer in which said first electronic component is already embedded in the first insulating layer; calculating a set of displacements between design positions of terminals of said second electronic component and the actual position of the terminals of said second electronic component on the surface of said first insulating layer, and holding said set of displacements as second displacement data; correcting, based on said second displacement data, design data to be used for processing said board the processing including one of creating a bending point to reroute a wiring line, increasing the wiring line, and decreasing the wiring line after said board is covered with said second insulating layer; and applying a maskless exposure onto the first and second insulating layers of the board based on the corrected design data for forming the wiring pattern and the wiring line.