EEPROM device for increasing a coupling ratio and...

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

Reexamination Certificate

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C257S316000

Reexamination Certificate

active

10849219

ABSTRACT:
An electrically erasable and programmable read only memory (EEPROM) device may include: a gate oxide layer on a semiconductor substrate, the gate oxide layer including a first segment of a first thickness, a second segment of a second thickness, and a tunneling third segment of a third thickness, the second thickness being thicker than the first thickness and the third thickness being thinner than the first thickness; a floating junction region formed under a portion of the gate oxide layer in the semiconductor substrate; and a floating gate, an insulating layer pattern, and a control gate which are sequentially formed, respectively, on the gate oxide layer.

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