Semiconductor integrated circuit device

The layout design for double-height cells with fork-sheet transistors in semiconductor integrated circuits addresses scaling issues by enhancing manufacturing precision and transistor performance estimation, reducing variations, and improving yield.

WO2026150752A1PCT designated stage Publication Date: 2026-07-16SOCIONEXT INC

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SOCIONEXT INC
Filing Date
2025-12-17
Publication Date
2026-07-16

AI Technical Summary

Technical Problem

Existing semiconductor integrated circuit devices face challenges with excessive scaling leading to increased off-current and power consumption, particularly in double-height cells using CFETs, where specific considerations for the layout structure of filler cells using fork-sheet transistors have not been adequately addressed.

Method used

A layout design for semiconductor integrated circuit devices incorporating double-height cells with fork-sheet transistors, where standard cells are arranged in specific configurations with overlapping nanosheets and gate wirings to improve manufacturing precision and transistor performance estimation, including arrangements that maintain consistent active region widths and positions across cell boundaries.

Benefits of technology

The proposed layout enhances manufacturing precision and accuracy of transistor performance estimation by regularizing gate and local wiring arrangements, reducing manufacturing variations, and improving yield and reliability in semiconductor integrated circuit devices.

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Abstract

An inverter cell (C2) is disposed so as to span across cell rows (CR1, CR2). An inverter cell (C1) is provided with an active region (2P1) and an active region (2N1) formed above the active region (2P1). The inverter cell (C2) is provided with an active region (2P2) and an active region (2N2) formed above the active region (2P2). Nanosheets (21, 22) are such that a first side surface is exposed from a gate wiring (31). The active regions (2P2, 2N2) are formed so as to span across a cell row boundary.
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