Semiconductor IC Capacitor Resistor Region Layout
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Solution Overview
Problem
The existing methods for designing semiconductor integrated circuits face challenges in efficiently inserting power capacitors due to mismatched dimensions between capacitor spaces and capacitors, requiring extensive time and skill, and varying capacitance values.
Innovation Solution
The method involves arranging capacitor/resistor regions along the edges of unit cells with metal-oxide-semiconductor transistors, where conductive layers are connected to the transistors, and dummy capacitors are used between cells to ensure accurate capacitance calculation and easier power line reinforcement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If power capacitors are manually inserted into predetermined spaces in the chip layout, then the capacitor can be connected to power wiring, but the shape or size of the space may not match the dimensions of the capacitor, requiring extensive time and skill to arrange
Solution Approach 1:
The patent applies preliminary action by pre-defining capacitor regions with standardized dimensions during the layout design phase, before actual capacitor placement. The capacitor regions are designed with widths equal to the lengths of active resistors, establishing a standardized interface that eliminates the need for manual dimension matching during capacitor insertion. This pre-planned dimensional compatibility resolves the time-consuming arrangement process described in the contradiction.
Solution Approach 2:
The patent changes the dimensional parameters of capacitor regions to match active resistor dimensions (width equal to length). By standardizing the capacitor region width to be equal to the active resistor length, the invention creates a uniform parameter set that simplifies the layout process. This parameter standardization allows capacitors to be placed without manual dimension adjustment, directly addressing the time loss issue while maintaining ease of manufacture.
2Manufacturing precision
If power capacitors are manually inserted into predetermined spaces in the chip layout, then the capacitor can be connected to power wiring, but increased skill may be required to arrange the elements since the capacitance of a capacitor can vary according to a designer
Solution Approach 1:
The patent standardizes the dimensional parameters of capacitor regions, specifically setting the width equal to the length of active resistors. This parameter standardization ensures that all capacitor regions have consistent dimensions, which directly leads to consistent capacitance values. By eliminating dimensional variations, the invention removes the source of capacitance variability that would otherwise require skilled judgment during arrangement.
Solution Approach 2:
The patent applies homogeneity by making all capacitor regions uniform in dimension (width equal to active resistor length). This homogeneous design ensures that every capacitor region has the same geometric properties, which translates to consistent electrical characteristics. The uniformity eliminates the need for skilled differentiation between various capacitor configurations, reducing the skill requirement while maintaining manufacturing precision.
3Ease of operation
If capacitor regions are arranged along opposing edges of unit cells with standardized dimensions, then the arrangement process is simplified and power line connections are easier, but the layout must conform to specific dimensional constraints
Solution Approach 1:
The patent creates a universal layout structure where capacitor regions along opposing edges of unit cells follow a standardized dimension (width equal to active resistor length). This universal design allows the same layout pattern to be repeatedly applied across different unit cells and circuit configurations. The standardized interface enables easy replication and simplifies the arrangement process, while the modular nature maintains adaptability to various circuit designs through consistent interfacing.
Solution Approach 2:
The patent segments the chip layout into standardized unit cells with capacitor regions positioned along opposing edges. Each unit cell is divided into functional blocks with clearly defined capacitor regions that have standardized dimensions. This segmentation allows independent design and placement of each unit cell while maintaining overall consistency. The modular segmentation provides layout flexibility by allowing different numbers and arrangements of unit cells while preserving the standardized capacitor interface.
Data Source
AI summary
A method of configuring a semiconductor integrated circuit (IC) includes arranging a circuit region in the center of a unit cell. Capacitor/resistor regions are arranged along the left and right edge portions of the unit cell. The capacitor/resistor regions include a plurality of active resistors having the same length and a capacitor having a width equal to the length of the plurality of active resistors. In addition, a first conductive layer is arranged longitudinally in each of the capacitor/resistor regions so as to contact the left and right edge portions of the unit cell.