Pixel Charging Timing Adjustment for Display Panel
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Solution Overview
Problem
Existing liquid crystal display panels face issues with low overall charging rates due to insufficient charging time of the positive electrode and incorrect charging by the negative electrode, leading to poor overall charging performance.
Innovation Solution
A method for charging pixels in a display panel involves determining the time difference between the off times of thin-film transistor switches for positive and negative polarity signals, adjusting the intervals for charging, and delaying the turning off of switches to ensure proper phase alignment and extended charging time for the positive electrode, thereby improving the charging rate and preventing incorrect charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If positive and negative polarity signals are simultaneously transmitted to data lines, then the charging process is simplified, but the positive polarity signal has insufficient charging time and causes wrong charging
Solution Approach 1:
The patent applies preliminary action by turning on the thin-film transistor switches before simultaneously transmitting both positive and negative polarity signals to the data lines. This preliminary switch activation ensures that the pixel electrodes are properly prepared and isolated before the charging signals arrive, preventing wrong charging and ensuring sufficient charging time for the positive polarity signal while maintaining process simplicity.
2Stability of the object's composition
If the gate signal has a long falling time, then the transistor switching is smooth, but the positive polarity signal has insufficient charging time
Solution Approach 1:
The patent applies preliminary action by activating the thin-film transistor switches before the charging signals are transmitted. This early switch activation compensates for the long gate signal falling time, ensuring that the transistors are already in the on-state when charging begins, thus providing sufficient charging time for the positive polarity signal while maintaining smooth switching through the gradual gate signal transition.
3Productivity
If negative polarity signal charges pixels with V−, then negative electrode charging is achieved, but wrong charging occurs due to insufficient positive polarity charging time
Solution Approach 1:
The patent applies preliminary action by turning on the thin-film transistor switches before transmitting both polarity signals simultaneously. This ensures that the pixel electrodes are properly isolated and prepared, allowing the negative polarity signal to charge the negative electrode efficiently while preventing wrong charging of pixels that should be charged with positive polarity, thus maintaining both high charging rate and charging correctness.
Data Source
AI summary
A method for charging pixels and a display panel is provided, the method comprising: turning on thin-film transistor switches of pixels in a current row; inputting a positive polarity signal to one of a first data line and a second data line; inputting a negative polarity signal to the other of the first data line and the second data line at set intervals; turning off the thin-film transistor switches of the pixels in the current row.