Semiconductor Chip Interface Layout for Adaptive Via and Bond Density
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Solution Overview
Problem
Current 3D integrated circuits face challenges in optimizing layout spacing and bond density due to the fixed arrangement of through-silicon vias, which limits adaptability and efficiency in integrating electronic components.
Innovation Solution
The interface for semiconductor chips features an adaptive via region arrangement with device and via layout channels, allowing bonds to be placed exclusively in via regions, enabling flexible bond density designs and maintaining large, continuous layout spacing for circuitry and routing structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If through-silicon vias are arranged in a fixed pattern, then manufacturing process is simplified, but layout spacing utilization is reduced and adaptability to various bond density requirements is limited
Solution Approach 1:
The chip interface is segmented into distinct via regions and device regions through a grid-based layout system. Via regions are designated specifically for bond placement while device regions accommodate circuitry and routing structures, creating a modular framework that can be scaled and configured for different bond density requirements without changing the fundamental manufacturing process
Solution Approach 2:
The via region arrangement uses a flexible grid system where the density and distribution of via regions can be dynamically adjusted based on specific design requirements. The grid parameters such as via pitch and region spacing can be modified to accommodate different bond densities while maintaining the same basic manufacturing approach
2Quantity of substance
If via regions are densely arranged to increase bond density, then integration density is improved, but layout spacing for circuitry and routing structures is reduced
Solution Approach 1:
The layout is divided into via regions for bonds and device regions for circuitry, with clear spatial separation. This segmentation allows independent optimization of bond density in via regions without compromising the layout spacing required in device regions for circuitry and routing structures
Solution Approach 2:
The layout utilizes a two-dimensional grid system with via regions arranged in a regular pattern. By organizing via regions along specific grid lines and maintaining spacing in perpendicular directions, the design achieves high bond density in one dimension while preserving adequate layout spacing in other dimensions for circuitry placement
3Quantity of substance
If bonds are placed throughout the entire chip area, then bond density is maximized, but interference with circuitry and routing structures increases
Solution Approach 1:
Bonds are extracted from the general chip area and concentrated specifically in designated via regions. This extraction eliminates bond-circuitry interference by restricting bonds to areas where they cannot conflict with active device regions, while still achieving high total bond quantity through efficient packing within via regions
Solution Approach 2:
Different regions of the chip are assigned different functions: via regions are optimized for bond placement with appropriate density, while device regions are optimized for circuitry and routing with adequate spacing. This local differentiation ensures that bonds only appear where they are needed and do not interfere with circuitry in device regions
Data Source
AI summary
An interface for a semiconductor chip provided herein includes bonds. The interface has device layout channels and via layout channels and including a circuitry and routing structure. Each device layout channel is located between two via layout channels in a first direction to form a unit layout channel extending in a second direction intersecting the first direction. The bonds are arranged in a bond map following the via layout channels and outside the device layout channels. Most adjacent two of the bonds in the second direction are arranged in a vertical pitch, two bonds at two opposite sides of the device layout channel in the first direction are arranged in a transversal pitch, and the transversal pitch is greater than the vertical pitch. A portion of the circuitry and routing structure is disposed in the device layout channels. A semiconductor device including stacked semiconductor chips is also provided.