Patent ID: 11908799
Assignee: SOCIONEXT INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 0:
1. A semiconductor integrated circuit device including a standard cell as a capacitance cell, the standard cell comprising:
a first power supply line extending in a first direction and supplying a first power supply voltage;
a second power supply line extending in the first direction and supplying a second power supply voltage different from the first power supply voltage;
a capacitance part provided between the first power supply line and the second power supply line as viewed in plan; and
a fixed-value output part provided between the first power supply line and the second power supply line as viewed in plan, for supplying the first power supply voltage or the second power supply voltage to the capacitance part,
wherein
the capacitance part has
a first transistor that is a three-dimensional transistor of a first conductivity type, and
a second transistor that is a three-dimensional transistor of a second conductivity type, formed above the first transistor in a depth direction,

a source and drain of the first transistor are both connected to one of the first and second power supply lines, and a source and drain of the second transistor are both connected to one of the first and second power supply lines,
the fixed-value output part has
a third transistor that is a three-dimensional transistor of the first conductivity type, formed on a level with the first transistor in the depth direction, and
a fourth transistor that is a three-dimensional transistor of the second conductivity type, formed on a level with the second transistor in the depth direction,

a source of the third transistor is connected to the first power supply line and a drain thereof is connected to a gate of the fourth transistor, and a source of the fourth transistor is connected to the second power supply line and a drain thereof is connected to a gate of the third transistor,
gates of the first and second transistors are both connected to the gate of the third transistor or the gate of the fourth transistor, and
the source of the third transistor is used in common with the source or drain of the first transistor, or the source of the fourth transistor is used in common with the source or drain of the second transistor.