Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate
Reexamination Certificate
2006-04-25
2006-04-25
Vu, David (Department: 2818)
Semiconductor device manufacturing: process
Making field effect device having pair of active regions...
Having insulated gate
C438S386000
Reexamination Certificate
active
07033886
ABSTRACT:
A partial vertical memory cell and fabrication method thereof. A semiconductor substrate is provided, in which two deep trenches having deep trench capacitors respectively are formed, and the deep trench capacitors are lower than a top surface of the semiconductor substrate. A portion of the semiconductor outside the deep trenches is removed to form a pillar between. The pillar is ion implanted to form an ion-doped area in the pillar corner acting as a S/D area. A gate dielectric layer and a conducting layer are conformally formed on the pillar sequentially. An isolation is formed in the semiconductor substrate beside the conducting layer. The conducting layer is defined to form a first gate and a second gate.
REFERENCES:
patent: 6514816 (2003-02-01), Lee
Chang Ming-Cheng
Chen Yi-Chen
Chen Yi-Nan
Nanya Technology Corporation
Quintero Law Office
Vu David
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