Patent ID: 9748135
Date: 2017-08-29
CPC Classifications: H01L

Claim:
1. A method of selectively locating a barrier layer on a substrate, the method comprising: forming a barrier layer on a surface of a dielectric layer included with the substrate, the barrier layer comprising a metal element and a non-metal element, the barrier layer having an electrical resistivity no less than about 50 micro-ohm*cm, and formed from a material selected from the group comprising tantalum nitride (TaN) and titanium nitride (TiN), and the substrate is formed from a dielectric material: forming an electrically conductive film layer on the barrier layer; forming a surface component on the electrically conductive film layer; and selectively ablating portions of at least one of the barrier layer and the conductive film layer from the dielectric layer, wherein the surface component has a first thickness and the barrier layer has a second thickness less than the first thickness, and wherein the selective ablating includes selectively radiating the dielectric layer based on the first thickness of the surface component and the second thickness of the barrier layer, wherein the selectively ablating portions of the barrier layer includes directing energy pulses to the barrier layer such that the barrier layer is ablated and re-exposes the dielectric layer in response to the dielectric layer reaching an ablation threshold, and wherein the selectively ablating portions of the barrier layer includes selectively radiating a first portion of the dielectric layer to a first temperature while radiating a second portion of the dielectric layer to a second temperature less than the first temperature; and forming an encapsulation layer on the surface component and the re-exposed portions of the dielectric layer, the encapsulation layer formed from TaN; and directing energy pulses to the encapsulation layer such that a first portion of the encapsulation layer ablates from the re-exposed portions of the dielectric layer while a second portion of the encapsulation layer is maintained and encapsulates the surface component.