Display Panel Crosstalk Reduction via Gate Timing Offset
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Solution Overview
Problem
Display panels, such as OLED displays, experience crosstalk phenomena due to fluctuations in power supply voltage, affecting display quality, as the change in data signal causes noise that is not adequately eliminated before the gate driving signal starts, leading to image distortion.
Innovation Solution
A driving method is implemented where the timing of the gate driving signal is set based on an effective time difference between the data signal and the gate driving signal, ensuring the first time difference is greater than 0.5 times and less than the effective time difference, while maintaining the duration of both signals, thereby alleviating the crosstalk by eliminating noise before the gate driving signal begins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the gate driving signal starts immediately after data signal change, then the scanning speed is maintained, but power supply voltage fluctuations cause crosstalk and degrade display quality
Solution Approach 1:
The patent applies preliminary action by setting the gate driving signal to start after a predetermined time difference from the data signal change. This time offset allows the power supply voltage to stabilize before the gate driving signal begins, eliminating crosstalk caused by voltage fluctuations while maintaining efficient scanning through optimized timing configuration.
2Object-affected harmful factors
If the time difference between data signal and gate driving signal is increased, then crosstalk is reduced, but the scanning period is extended and productivity decreases
Solution Approach 1:
The patent applies parameter changes by optimizing the time difference parameter between the data signal and gate driving signal. By setting this time difference to a specific predetermined value, the patent achieves the optimal balance between eliminating crosstalk (improving display quality) and maintaining scanning efficiency (preserving productivity), thus resolving the contradiction between reducing harmful factors and maintaining production output.
3Manufacturing precision
If the timing of gate driving signal is adjusted to eliminate noise, then display quality is improved, but the signal synchronization complexity increases
Solution Approach 1:
The patent applies self-service by configuring the timing controller to automatically generate the gate driving signal with the predetermined time difference relative to the data signal. This self-adjusting timing mechanism eliminates the need for complex external synchronization circuits or manual calibration, thereby improving display quality through noise elimination while keeping the control system relatively simple and easy to implement.
Data Source
AI summary
The present disclosure provides a driving method, and relates to a field of display technology. The driving method is used to drive a pixel array, and the driving method includes operation to operation: in operation, setting a timing of a gate driving signal (Gate) based on an effective time difference between a data signal (Vdata) and an effective signal of the gate driving signal (Gate); and in operation, driving the pixel array by using the gate driving signal (Gate). The present disclosure further provides a display device.