Patent ID: 8883647
Filing Date: 2014-11-11
Classification: H01L,H05K

Abstract:
1. A method of manufacturing a trench substrate, comprising: (A) forming trenches in a circuit region, a dummy region positioned at a peripheral edge region of the trench substrate and a cutting region, all of which are defined on an insulating layer formed on one side or both sides of a base substrate, wherein a depth of the trenches is less than a thickness of the insulating layer; (B) forming a plating layer both in the trenches and on the insulating layer; (C) removing a surplus portion of the plating layer formed on the insulating layer; (D) applying etching resist onto the circuit removing the plating layer formed in the dummy region positioned at the peripheral edge region of the trench substrate and the cutting region, and removing the etching resist; and (E) forming an outer insulating layer both in the trenches formed in the dummy region positioned at the peripheral edge region of the trench substrate and on the insulating layer.