Abstract:
A wiring board includes a substrate having a cavity, an electronic component positioned in the cavity and having a first-side electrode on one side of the electronic component and a second-side electrode on the opposite side of the electronic component, an insulation layer formed on a surface of the substrate and the electronic component such that the insulation layer covers the electronic component positioned in the substrate, and a conductive layer formed on the surface of the substrate and including linear conductive patterns surrounding an opening of the cavity on the surface of the substrate. The linear conductive patterns include a first linear conductive pattern positioned adjacent to the first-side electrode and a second linear conductive pattern positioned adjacent to the second-side electrode such that the first linear conductive pattern and the second linear conductive pattern are insulated from each other.
Abstract:
A method for forming cavity in substrate includes setting start position on closed loop line having circumference L for substrate, consecutively irradiating laser from laser device upon board for the substrate such that holes are formed, and moving the device in loop from the start position along the line such that penetrating hole is formed through the board. The start position of first loop is set as base position, the moving includes shifting the start position by distance d after each loop and controlling such that the moving satisfies p=Σdi, m≅L/p and M=m×n, where i=1 to n, n represents number of loops, p represents pitch of the holes, m represents number of the holes in loop, Σdi is distance from the base position for the start position after i-th loop, and M is number of the holes by the loops.
Abstract:
A method for forming cavity in substrate includes setting start position on closed loop line having circumference L for substrate, consecutively irradiating laser from laser device upon board for the substrate such that holes are formed, and moving the device in loop from the start position along the line such that penetrating hole is formed through the board. The start position of first loop is set as base position, the moving includes shifting the start position by distance d after each loop and controlling such that the moving satisfies p=Σdi, m≅L/p and M=m×n, where i=1 to n, n represents number of loops, p represents pitch of the holes, m represents number of the holes in loop, Σdi is distance from the base position for the start position after i-th loop, and M is number of the holes by the loops.