Differential Line Layout With Bend Compensation for Delay Matching
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Solution Overview
Problem
Existing differential signal transmission in paired lines often experiences inconsistent delay times despite equal length design, affecting signal quality.
Innovation Solution
A layout structure for differential lines with bending structures at the ends of the wires to control endpoint voltages and delays, improving synchronization and transmission quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the paired differential lines are designed to be equal in length, then the delay time of the transmitted differential signals should be consistent, but in practice the transmitted differential signals still have inconsistent delay time
Solution Approach 1:
The patent applies local quality by introducing bending structures at specific locations (ends or middle portions) of one or both differential lines. These localized structural modifications create additional path length and delay compensation without requiring complete redesign of the entire line geometry, thereby achieving delay synchronization while maintaining manufacturing feasibility
Solution Approach 2:
The patent utilizes curvature by implementing bending structures (curved portions) in the differential lines. These curved sections increase the signal path length in a controlled manner, providing delay compensation to achieve synchronized arrival of differential signals at the receiver, thus resolving the inconsistency despite equal nominal line lengths
2Length of moving object
If the length of the paired differential lines is adjusted to be almost the same, then the delay time should be consistent, but the transmitted differential signals may still have inconsistent delay time
Solution Approach 1:
The patent applies preliminary anti-action by pre-calculating and compensating for expected delay differences through carefully designed bending structures. The curvature radius and arc length of these structures are specifically engineered to provide the exact additional delay needed to synchronize signals, counteracting inherent path length differences before signal transmission occurs
Data Source
AI summary
A layout structure of differential lines, a memory storage device and a memory control circuit unit are provided. The layout structure of the differential lines includes a wiring layer, a first wire and a second wire. The first wire is arranged on the wiring layer and configured to transmit a first differential signal. The second wire is arranged on the wiring layer and configured to transmit a second differential signal. A first end of the first wire and a first end of the second wire are coupled to a first electrical component. A second end of the first wire and a second end of the second wire are coupled to a second electrical component. The first end of the first wire has a first bending structure. One of the second end of the first wire and the second end of the second wire has a second bending structure.