发明申请
US20090255818A1 METHOD FOR MONITORING PATTERNING INTEGRITY OF ETCHED OPENINGS AND FORMING CONDUCTIVE STRUCTURES WITH THE OPENINGS 有权
用于监测雕刻开口的完整性和形成具有开口的导电结构的方法

METHOD FOR MONITORING PATTERNING INTEGRITY OF ETCHED OPENINGS AND FORMING CONDUCTIVE STRUCTURES WITH THE OPENINGS
摘要:
Disclosed are embodiments of a method that both monitors patterning integrity of etched openings (i.e., ensures that lithographically patterned and etched openings are complete) and forms on-chip conductive structures (e.g., contacts, interconnects, fuses, anti-fuses, capacitors, etc.) within such openings. The method embodiments incorporate an electro-deposition process to provide both the means by which pattern integrity of etched openings can be monitored and also the metallization required for the formation of conductive structures within the openings. Specifically, during the electro-deposition process, electron flow is established by applying a current to the back side of the semiconductor wafer, thus, eliminating the need for a seed layer. Electron flow through the wafer and into the electroplating solution is then monitored and used as an indicator of electroplating in the etched openings and, thereby, as an indicator that the openings are completely etched.
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