Patent ID: 8444791

Claim:
A method for manufacturing a ceramic capacitor embedded in a wiring substrate with a resin insulation material being contiguous with an outer surface of the ceramic capacitor, wherein the ceramic capacitor includes a plate-shaped capacitor body having a pair of capacitor main surfaces which are positioned on opposite sides to each other in a thickness direction and a plurality of capacitor side surfaces and having a structure in which a plurality of internal electrodes are alternately layered through a ceramic dielectric layer, the method comprising: laminating ceramic-made green sheets, each of which becomes the ceramic dielectric layer afterwards, and combining the green sheets into one, to form a multi-device-forming multilayer unit in which a plurality of product areas, each of which becomes the ceramic capacitor, are arranged in longitudinal and lateral directions along a plane direction; forming a groove portion whose shape in cross section is an inverted trapezoidal shape to form a chamfer portion at a boundary portion between at least one of the capacitor main surfaces and the plurality of capacitor side surfaces through a process along an outline of the product area; before a sintering, grooving a bottom portion of the groove portion by performing a laser processing to the bottom portion of the groove portion to form a break groove which opens at the bottom portion of the groove portion and is arranged along the outline of the product area, and the laser processing being performed so that when a bottom width of the groove portion is denoted as “d” and an opening width of a concave portion that forms the break groove is denoted as “D”, a relationship between “d” and “D” is “d≦D”; sintering the multi-device-forming multilayer unit after the forming of the groove portion; dividing the product areas into each product area along the groove portion after the sintering; after the forming of the groove portion and before the sintering, covering a corner portion of the capacitor body which is positioned at the boundary portion between the capacitor main surface and the capacitor side surface with a metal layer part that becomes a metal layer; before the sintering: forming a via hole in the multi-device-forming multilayer unit by performing a laser processing; forming a conductor section that becomes an in-capacitor via conductor by filling the via hole with a via conductor forming material; and forming, on at least one of the capacitor main surfaces of the multi-device-forming multilayer unit, a surface layer electrode part that becomes a surface layer electrode connected with an end portion of the conductor section, and wherein, the forming of the surface layer electrode part is performed simultaneously with the covering of the corner portion with the metal layer part wherein after forming the groove portion and before grooving the bottom portion of the groove portion, the forming of the surface layer electrode part and the covering of the corner portion with the metal layer part are performed.