SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE

PROBLEM TO BE SOLVED: To provide a semiconductor device hardly causing corrosion of titanium nitride forming an anti-reflection film even when a silicon oxide film is provided on the anti-reflection film made of titanium nitride and with a small number of processes in manufacturing, and a method for...

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Hauptverfasser: IMURA YUKIHIRO, MORITA TAKESHI, KATO SHINJIRO, AKINO MASARU
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a semiconductor device hardly causing corrosion of titanium nitride forming an anti-reflection film even when a silicon oxide film is provided on the anti-reflection film made of titanium nitride and with a small number of processes in manufacturing, and a method for manufacturing the same.SOLUTION: A semiconductor device 10 comprises a substrate 1, a wiring 6 provided on the substrate 1, a titanium nitride film 7 provided on the wiring 6. an oxide film 3 provided on the titanium nitride film 7, and a silicon nitride film 4 provided on the oxide film 3. A pad part 8 through which the wiring 6 is exposed is formed in a position which is inside the third opening 93 formed in the oxide film 3 in a plan view and in which the first opening 91 formed in the silicon nitride film 4 and the second opening 92 formed in the titanium nitride film 7 overlap in the plan view. The silicon nitride film 4 is formed in contact with the titanium nitride film 7 arranged inside the third opening 93 in the plan view.SELECTED DRAWING: Figure 1 【課題】窒化チタンからなる反射防止膜の上にシリコン酸化膜が設けられていても、反射防止膜を形成している窒化チタンの腐食が生じにくく、製造における工程数も少ない半導体装置およびその製造方法を提供する。【解決手段】基板1と、基板1上に設けられた配線6と、配線6上に設けられた窒化チタン膜7と、窒化チタン膜7上に設けられた酸化膜3と、酸化膜3上に設けられたシリコン窒化膜4とを有し、シリコン窒化膜4に形成された第1開口部91と窒化チタン膜7に形成された第2開口部92とが平面視で重なる位置であって、酸化膜3に形成された第3開口部93の平面視内側の位置に、配線6が露出されてなるパッド部8が形成され、第3開口部93の平面視内側に配置された窒化チタン膜7上に接してシリコン窒化膜4が形成されている半導体装置10とする。【選択図】図1