Nan Ya Technology Corporation

Minn-Jiunn Jiang

Tzu-Ching Tsai

Lin-Chin Su

A method for fabricating a LOCOS isolation in accordance with the present invention, involves first forming a masking layer on the active region of a silicon substrate. Next, the masking layer is used as the etching mask and the silicon substrate is etched to form a recess. Then, a thin nitride layer is formed on the masking layer and the recess. Afterwards, a polysilicon layer is deposited on the thin nitride layer. Then, an etching process is applied to etch back the polysilicon and the thin nitride layer, thereby exposing the upper surface of the masking layer. Next, a LOCOS isolation is grown above the recess.

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Taipei, Taiwan

Minn-Jiunn Jiang