Patent ID: 11925025
Assignee: RENESAS ELECTRONICS CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A semiconductor device comprising a memory cell and a switch circuit formed on a semiconductor substrate,
wherein the switch circuit is disposed outside the memory cell and electrically connected to the memory cell,
wherein the memory cell includes a plurality of transistors including a first transistor,
wherein the switch circuit comprises a second transistor electrically connected to the first transistor,
wherein the second transistor includes:
a first word gate formed on a first gate insulating film;
a second word gate formed on a second gate insulating film having a thickness thicker than the first gate insulating film,
wherein in the second transistor, when a current flows through the switch circuit, a first voltage is supplied from the outside of the switch circuit, so that a first region of the semiconductor substrate under the first word gate becomes conductive state,
wherein in the second transistor, when a current flows through the switch circuit, a second voltage is supplied from the outside of the switch circuit, so that a second region of the semiconductor substrate under the first coupling gate becomes conductive state, and
wherein the second voltage is higher than the first voltage.