Circuit Module Spacing to Reduce Standing Wave Interference
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Solution Overview
Problem
High-frequency signal distortion and attenuation occur in liquid crystal display panels due to standing wave interference caused by impedance mismatch in signal transmission lines, particularly at frequencies within the microwave band.
Innovation Solution
The circuit design includes specific distance configurations between circuit modules, where the absolute difference between adjacent distances is not an integer multiple of the shorter distance, preventing modules from being positioned at the middle of the standing wave field, thus reducing interference and signal distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If differential signal technique is adopted for high-speed data transmission, then data transmission frequency can reach microwave band (300 MHZ to 300 GHZ), but impedance mismatch occurs at signal transmitter, receiver or terminal, causing standing wave and signal distortion
Solution Approach 1:
The patent applies local quality by making the spacing between adjacent circuit modules non-uniform. Specifically, the distance between adjacent modules is designed to be non-integer multiples of a base distance, creating localized variations in the electromagnetic field distribution. This prevents the formation of standing waves at specific locations and reduces signal distortion while maintaining high-frequency transmission capability.
2Device complexity
If uniform spacing between circuit modules is used, then circuit design is simple, but standing wave interference occurs causing signal distortion and attenuation
Solution Approach 1:
The patent applies asymmetry by introducing non-uniform spacing between adjacent circuit modules. The distance between modules is deliberately designed to be non-integer multiples of a base distance, creating asymmetric spacing patterns. This asymmetric arrangement disrupts the formation of standing waves and reduces signal distortion, achieving better signal transmission stability without significantly increasing design complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively alleviates signal distortion and attenuation by minimizing standing wave interference, ensuring stable signal transmission even at high frequencies.
Implementation Method 1
Transmission and reflection of electromagnetic waves are basic phenomena in a high-speed circuit. Specifically, when propagating in a signal line, a signal will be strongly reflected in case of an obstacle. Unreasonable impedance matching may even cause the signal in a circuit to generate a standing wave.
Data Source
AI summary
The present invention discloses a circuit, a display substrate and a display device, the circuit comprises a plurality of circuit modules, distances of at least one circuit module from two circuit modules adjacent thereto are a first distance and a second distance, respectively, the first distance is smaller than the second distance, and the absolute value of the difference between the second distance and the first distance is not equal to an integer multiple of the first distance. In the present invention, distances of at least one circuit module from two circuit modules adjacent thereto satisfy the above specific condition, so that at least one circuit module can be prevented from being positioned at the middle position of the standing wave field between the two circuit modules adjacent thereto, therefore, interference of standing wave to transmission signals is reduced, and signal distortion and signal attenuation are alleviated.