Display Panel Drive Method for Flicker Reduction
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Solution Overview
Problem
Existing display technologies face challenges in maintaining consistent luminance across different refresh rates, leading to flicker phenomena and poor display quality.
Innovation Solution
A drive method for a display panel that involves obtaining display data and determining a target rate level based on the current refresh rate. This method controls sub-pixels by adjusting the gate scanning signal voltage and data voltage according to the target rate level, ensuring optimal charging and reduced charge rate differences across varying refresh rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel operates at different refresh rates, then the display can adapt to various usage scenarios and reduce power consumption, but the luminance becomes inconsistent and flicker phenomena occur
Solution Approach 1:
The patent applies dynamics by making the gate scanning signal voltage adjustable according to the target rate level. The voltage is dynamically changed based on the refresh rate, with higher voltages for higher refresh rates and lower voltages for lower refresh rates. This dynamic adjustment allows the display panel to maintain consistent luminance across different refresh rates while adapting to various usage scenarios.
Solution Approach 2:
The patent changes the voltage parameter of the gate scanning signal based on the refresh rate. By establishing a correspondence relationship between rate levels and voltage values, the system adjusts the voltage parameter to compensate for charge rate differences. This parameter change resolves the contradiction by enabling adaptability to different refresh rates while maintaining luminance consistency.
2Stability of the object's composition
If the gate scanning signal voltage is adjusted according to refresh rate, then luminance consistency is improved, but the control complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-establishing a correspondence relationship between rate levels and voltage values before actual operation. This lookup table or mapping structure is prepared in advance, allowing the system to simply retrieve the appropriate voltage value during operation without complex real-time calculations. This reduces control complexity while maintaining luminance consistency.
Solution Approach 2:
The patent uses parameter changes by establishing a direct mapping between refresh rates and voltage values. Instead of complex control algorithms, the system uses a predefined correspondence relationship that simplifies the control process. This approach reduces device complexity while achieving the desired luminance consistency.
3Speed
If the data voltage is charged to sub-pixels quickly, then the charging speed improves, but charge rate differences across refresh rates cause display quality degradation
Solution Approach 1:
The patent changes the gate scanning signal voltage parameter based on the target rate level to compensate for charge rate differences. By adjusting this voltage parameter, the system ensures that charge rates remain consistent across different refresh rates, preventing display quality degradation while maintaining fast charging speeds.
Solution Approach 2:
The patent implements feedback by monitoring the actual charge rates and adjusting the gate scanning signal voltage accordingly. This feedback mechanism ensures that charge rate differences are compensated, maintaining uniform display quality across all refresh rates while preserving fast charging performance.
Data Source
AI summary
A drive method for a display panel (100) includes: obtaining display data corresponding to a current display frame, and a current refresh rate (S10); determining a target rate level corresponding to the current refresh rate according to the current refresh rate and prestored rate levels corresponding one-to-one to different refresh rate intervals (S20); and controlling sub-pixels in the display panel (100) to be charged with a data voltage according to the target rate level and the display data (S30).