| 摘要 |
The present invention provides a method for forming a floating gate with a poly tip. The method includes the step of providing a semiconductor substrate with a gate dielectric layer formed on the semiconductor substrate. A first polysilicon layer is then formed on the gate dielectric layer. A hard mask layer is formed on the first polysilicon layer. Then, an opening is formed in the hard mask layer to expose a portion of the first polysilicon layer. Next, a poly spacer is formed in the opening. Then, the hard mask layer and the first polysilicon layer thereunder are removed to form the floating gate.
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