VA Display Panel Driving Method for Wide-Angle Color Deviation
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Solution Overview
Problem
Large-size Vertical Alignment (VA) liquid crystal display panels experience significant color deviation at wide viewing angles due to rapid voltage saturation, leading to poor image quality and contrast compared to front-view images.
Innovation Solution
A display panel driving method that adjusts color saturation signals by converting RGB signals to HSV, determining if the hue is within specific intervals, and applying predetermined adjustment coefficients to reduce color saturation values in those intervals, thereby improving color deviation without sacrificing light transmittance or increasing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If VA liquid crystal technology is used for large-size display panels, then production efficiency and manufacturing cost are improved, but color deviation at wide viewing angles deteriorates
Solution Approach 1:
The patent applies parameter changes by adjusting the color saturation values of drive signals based on voltage levels and viewing angles. Specifically, it reduces color saturation for high-voltage pixels (which correspond to wide viewing angles) while maintaining full color saturation for low-voltage pixels (front viewing angles), thereby correcting color deviation without changing the fundamental VA liquid crystal technology
Solution Approach 2:
The patent implements dynamic adjustment of color saturation values according to the voltage level of each pixel. The drive signal processing circuit dynamically modifies color saturation based on whether a pixel is in a high-voltage or low-voltage state, allowing the display to adaptively correct color deviation across different viewing angles while maintaining production efficiency
2Manufacturing precision
If color saturation is reduced to improve color deviation, then color deviation is improved, but color saturation deteriorates
Solution Approach 1:
The patent applies local quality by selectively reducing color saturation only for specific pixels that exhibit color deviation (high-voltage pixels at wide viewing angles), while maintaining full color saturation for pixels that do not have this issue (low-voltage pixels at front viewing angles). This localized approach ensures that color deviation is corrected without unnecessarily compromising overall color saturation
Solution Approach 2:
The patent changes the color saturation parameter dynamically based on the voltage level and viewing angle conditions. By adjusting color saturation only when and where needed (for high-voltage pixels), the patent resolves the contradiction between improving color deviation and maintaining color saturation
Data Source
AI summary
The present disclosure discloses a display panel driving method, a driving system and a display device, includes steps: receiving the first color signals, converting the first color signals into the first color space signals; obtaining a current color saturation signal, determining whether the current color saturation signal is in an adjusting color adjustment interval, if the current color saturation signal is in the adjusting color adjustment interval, obtaining the predetermined adjustment coefficients; adjusting and processing the current color saturation signal to receive a second color space signals; converting the second color space signals into the second color signals in the RGB system to drive a display pane.