Display Driving Method for Reducing Color Shift
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Solution Overview
Problem
Conventional liquid crystal displays experience significant color shift and luminance differences when viewed from the side, particularly with red, green, and blue hues, leading to poor picture quality due to rapid saturation of gray scale luminance ratios at different angles.
Innovation Solution
A display driving method and device that divides original gray scale data into two groups, with the first group featuring the maximum gray scale and the second group having a gray scale of 0 or greater than the minimum, to adjust light source intensities and reduce luminance differences, thereby minimizing color shift and maintaining consistent luminance across viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional liquid crystal display is used with standard gray scale driving, then the display structure is simple and easy to manufacture, but significant color shift occurs at side view angles and luminance differences are large between front and side angles
Solution Approach 1:
The patent segments the original gray scale data into two distinct groups: first group data (with gray scale values greater than minimum) and second group data (with gray scale values equal to minimum). This segmentation allows independent processing and driving strategies for different pixel types, enabling color shift compensation without complex hardware changes. The segmentation principle is applied to divide the display area into different driving zones based on pixel characteristics.
Solution Approach 2:
The patent applies local quality by implementing different driving strategies for different pixel locations. Specifically, pixels displaying first group gray scale data are driven with one light source intensity, while pixels displaying second group gray scale data are driven with a different light source intensity (or LED turned off). This localized differentiation compensates for color shift at side view angles while maintaining overall display simplicity.
2Manufacturing precision
If gray scale luminance ratio is increased to improve front view angle picture quality, then picture quality at front view angle is improved, but luminance difference between front view angle and side view angle increases rapidly
Solution Approach 1:
The patent implements dynamic driving by adjusting light source intensity based on the gray scale group being displayed. The driving light source intensity is dynamically changed between first light source intensity (for first group data) and second light source intensity (for second group data). This dynamic adjustment compensates for the non-linear luminance response at different viewing angles, maintaining luminance consistency while preserving front view angle picture quality.
Solution Approach 2:
The patent changes the driving parameter (light source intensity) based on the gray scale group. By setting different light source intensities for different gray scale groups, the patent compensates for the saturation effect of gray scale luminance ratios at side view angles. This parameter change approach allows independent optimization of front view angle quality and side view angle consistency without hardware modification.
3Illumination intensity
If all LEDs are kept on to maintain luminance, then luminance is maintained, but energy consumption increases
Solution Approach 1:
The patent applies partial action by selectively turning off LEDs for pixels displaying second group gray scale data (minimum gray scale values). Since minimum gray scale pixels contribute less to overall luminance, turning off their corresponding LEDs achieves energy savings with minimal impact on perceived luminance. This partial deactivation strategy reduces energy consumption while maintaining acceptable luminance levels.
Solution Approach 2:
The patent enables the display system to self-regulate energy consumption by intelligently controlling LED activation based on content characteristics. The system automatically determines which pixels require LED activation and which can be turned off, optimizing energy usage without external intervention. This self-service approach balances luminance maintenance and energy conservation dynamically.
Data Source
AI summary
The application relates to a display driving method, device and apparatus. The method includes: acquiring a group of original gray scale data of each of pixel units of a content to be displayed in a preset display area; determining an average gray scale of each of hues in the preset display area according to the group of the original gray scale data; acquiring an original light source intensity of each of the hues of the content to be displayed in the preset display area; and dividing the group of the original gray scale data into a first group of gray scale data and a second group of gray scale data, according to the group of the original gray scale data of the each of pixel units, the average gray scale of each of the hues, and the original light source intensity; and determining a driving light source intensity of each of the hues in the preset display area; a gray scale of each of the hues of the first group of the gray scale data is a maximum gray scale in the group of the original gray scale data; and a gray scale of each of the hues of the second group of the gray scale data is equal to 0 or not a minimum gray scale in the group of the original gray scale data.