Abstract:
The formation of a MIM (metal insulator metal) capacitor (164) and concurrent formation of a resistor (166) is disclosed. A copper diffusion barrier is formed over a copper deposition (110) that serves as a bottom electrode (170) of the capacitor (164). The copper diffusion barrier mitigates unwanted diffusion of copper from the copper deposition (110), and is formed via electro-less deposition such that little to none of the barrier material is deposited at locations other than over a top surface of the deposition of copper/bottom electrode. Subsequently, layers of dielectric (150) and conductive (152) materials are applied to form a dielectric (172) and top electrode (174) of the MIM capacitor (164), respectively, where the layer of conductive top electrode material (152) also functions to concurrently develop the resistor (166) on the same chip as the capacitor (164).
Abstract:
Processes are provided herein for the fabrication of MEMS utilizing both a primary metal that is integrated into the final MEMS structure and two or more sacrificial secondary metals that provide structural support for the primary metal component during machining. A first secondary metal is thinly plated around the primarj metal and over the entire surface of the substrate without using photolithography. A second secondary metal, is then thickly plated over the deposited first secondary metal without using photolithography. Additionally, techniques are disclosed to increase the deposition rate of the first secondary metal between primary metal features in order to prevent voiding and thus enhance structural support of the primary metal during machining.
Abstract:
A method of manufacturing a semiconductor device (100) comprises forming an insulating layer (105) over a semiconductive substrate (110) and forming a copper interconnect. Forming the interconnect includes etching an interconnect opening in the insulating layer and filling the opening with copper plating. Filling with copper plating includes using a first and second electrochemical deposition (ECD). An electrolyte solution of the first and second electrochemical deposition contains organic additives, and a current of the first electrochemical deposition is greater than a current of the second electrochemical deposition.
Abstract:
Processes are provided herein for the fabrication of MFMS utilizing both a primary metal that is integrated into the final MEMS structure and a sacrificial secondary metal that provides structural support for the primary metal component during machining More specifically, techniques are disclosed to increase the rate of secondary metal deposition between primary metal features in order to prevent voiding in the sacrificial secondary metal and thus enhance structural support of the primary metal during machining.
Abstract:
A method of manufacturing a semiconductor device (100) comprises forming an insulating layer (105) over a semiconductive substrate (110) and forming a copper interconnect. Forming the interconnect includes etching an interconnect opening in the insulating layer and filling the opening with copper plating. Filling with copper plating includes using a first and second electrochemical deposition (ECD). An electrolyte solution of the first and second electrochemical deposition contains organic additives, and a current of the first electrochemical deposition is greater than a current of the second electrochemical deposition.
Abstract:
Processes are provided herein for the fabrication of MFMS utilizing both a primary metal that is integrated into the final MEMS structure and a sacrificial secondary metal that provides structural support for the primary metal component during machining More specifically, techniques are disclosed to increase the rate of secondary metal deposition between primary metal features in order to prevent voiding in the sacrificial secondary metal and thus enhance structural support of the primary metal during machining.
Abstract:
Processes are provided herein for the fabrication of MEMS utilizing both a primary metal that is integrated into the final MEMS structure and two or more sacrificial secondary metals that provide structural support for the primary metal component during machining. A first secondary metal is thinly plated around the primarj metal and over the entire surface of the substrate without using photolithography. A second secondary metal, is then thickly plated over the deposited first secondary metal without using photolithography. Additionally, techniques are disclosed to increase the deposition rate of the first secondary metal between primary metal features in order to prevent voiding and thus enhance structural support of the primary metal during machining.
Abstract:
The formation of a MIM (metal insulator metal) capacitor (164) and concurrent formation of a resistor (166) is disclosed. A copper diffusion barrier is formed over a copper deposition (110) that serves as a bottom electrode (170) of the capacitor (164). The copper diffusion barrier mitigates unwanted diffusion of copper from the copper deposition (110), and is formed via electro-less deposition such that little to none of the barrier material is deposited at locations other than over a top surface of the deposition of copper/bottom electrode. Subsequently, layers of dielectric (150) and conductive (152) materials are applied to form a dielectric (172) and top electrode (174) of the MIM capacitor (164), respectively, where the layer of conductive top electrode material (152) also functions to concurrently develop the resistor (166) on the same chip as the capacitor (164).