Patent ID: 6483142
Filing Date: 2002-11-19
Classification: H01L

Abstract:
A dual damascene structure having capacitors, comprising:a first Cu wire and a second Cu wire located in a first insulator; a first sealing layer located on the first insulator and the first and the second Cu wires; a second insulator located on the first sealing layer; a third insulator located on the second insulator; a first Cu plug and a second Cu plug located in the first sealing layer, the second insulator and the third insulator; a bottom electrode located on the third insulator and the first Cu plug, wherein the bottom electrode is connected to the first Cu wire through the first Cu plug; a conducting wire located on the third insulator and the second Cu plug, wherein the conducting wire is connected to the second Cu wire through the second Cu plug; a fourth insulator located on the bottom electrode and the conducting wire; an upper electrode located on the fourth insulator, and corresponding to the bottom electrode; a fifth insulator with a flat surface located on the upper electrode, the fourth insulator and the third insulator; a first dual damascene structure and a second dual damascene structure located in the fifth insulator and the fourth insulator, the first dual damascene structure comprising a third Cu wire and a third Cu plug, the second dual damascene structure comprising a fourth Cu wire and a fourth Cu plug, wherein the upper electrode is connected to the third Cu wire through the third Cu plug, and the conducting wire is connected to the fourth Cu wire through the fourth Cu plug; and a second sealing layer located on the third and fourth Cu wires and the fifth insulator.