| 摘要 |
A method for forming a memory device includes: forming a tunnel insulation layer, a conductive layer for a floating gate electrode, a charge blocking layer and a conductive layer for a control gate electrode over a substrate; and selectively etching the conductive layer for the control gate electrode, the charge blocking layer and the conductive layer for the floating gate electrode, thereby forming a plurality of gate lines, a plurality of select lines and at least two dummy lines disposed in a gap region between adjacent select lines, wherein the gate lines, the select lines and the dummy lines together construct strings.
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