Display Panel Signal Wire RC Delay Reduction
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Solution Overview
Problem
Display panels often exhibit uneven image display due to RC delay in signal transmission, leading to differences in rise and fall times and charging times across the panel, affecting display uniformity.
Innovation Solution
The implementation of a signal wire with a first and second path wire section, where the first path wire section transmits the drive signal in a first preset sequence and the second path wire section transmits the same signal in a second preset sequence, reducing RC delay and improving display uniformity by minimizing differences in signal reception between remote and proximal controlled modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single signal wire transmits drive signals to controlled modules, then the device complexity is reduced, but RC delay increases causing display unevenness
Solution Approach 1:
The signal wire is divided into multiple path wire sections (first path wire section and second path wire section), each transmitting the drive signal in a different preset sequence to different controlled modules. This segmentation allows optimization of signal transmission for different regions of the display panel, reducing RC delay effects and improving display uniformity without significantly increasing overall device complexity.
2Device complexity
If the drive signal is transmitted to remote controlled modules through a long signal wire, then the device structure is simplified, but the RC delay increases causing rise time and fall time differences
Solution Approach 1:
The patent employs different preset sequences for transmitting the drive signal through different path wire sections. By dynamically adjusting the transmission sequence based on the position of controlled modules (proximal vs. remote), the system optimizes signal arrival timing and reduces RC delay effects, minimizing rise time and fall time differences across the display panel.
3Ease of operation
If a single transmission sequence is used for all controlled modules, then the control logic is simplified, but display uniformity deteriorates due to charging time differences
Solution Approach 1:
The patent applies different preset sequences for different groups of controlled modules based on their positions relative to the signal wire. Proximal modules receive signals in one sequence while remote modules receive signals in another sequence, optimizing the charging time for each region. This local quality approach improves display uniformity while maintaining relatively simple control logic through predefined sequences.
Data Source
AI summary
A display panel and a display device. The display panel includes at least two controlled modules and a signal wire connected to the at least two controlled modules. The signal wire is configured to receive a drive signal sent by a drive module and transmit the drive signal to the at least two controlled modules. The signal wire includes a first path wire section and a second path wire section. A first end of the first path wire section and a first end of the second path wire section are configured to receive the same drive signal. The first path wire section is configured to sequentially transmit the drive signal to the at least two controlled modules in a first preset sequence. The second path wire section is configured to sequentially transmit the drive signal to the at least two controlled modules in a second preset sequence.