Display Panel Sub-Pixel Voltage Segmentation for Contrast
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Solution Overview
Problem
Existing wide viewing angle display panels experience a significant reduction in image contrast ratio at large viewing angles, leading to poorer image quality and a whiter appearance.
Innovation Solution
A display panel with a processor and memory that adjusts the voltage of drive signals for main and subordinate sub-pixels, using high-voltage and low-voltage gamma modules to select target drive signals based on sub-pixel arrangements, improving chromaticity viewing angle by mixing sub-pixels under different voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wide viewing angle display panel is used, then the viewing angle is improved, but the image contrast ratio is reduced at large viewing angles
Solution Approach 1:
The patent segments the drive signal processing into two distinct paths: a high-voltage gamma module for main sub-pixels and a low-voltage gamma module for subordinate sub-pixels. This segmentation allows different voltage levels to be applied to different sub-pixel groups, enabling the system to maintain high contrast ratio while achieving wide viewing angle performance.
Solution Approach 2:
The patent applies local quality by assigning different voltage characteristics to different sub-pixel groups based on their positions in the pixel array. Main sub-pixels receive high-voltage drive signals while subordinate sub-pixels receive low-voltage drive signals, creating localized quality differences that optimize both contrast ratio and viewing angle performance in different regions of the display.
2Manufacturing precision
If the voltage of drive signals is increased to improve image quality, then the image contrast ratio is improved, but the power consumption is increased
Solution Approach 1:
The patent applies high voltage only to main sub-pixels where it is most needed for maintaining contrast ratio, while subordinate sub-pixels operate at lower voltages. This localized application of high voltage minimizes overall power consumption while still achieving the desired image quality improvement in critical areas.
Solution Approach 2:
Instead of applying high voltage uniformly across all sub-pixels (excessive action), the patent applies high voltage only to the necessary main sub-pixels (partial action), achieving sufficient contrast ratio improvement without the full power consumption cost of universal high-voltage operation.
Data Source
AI summary
The present application relates to the technical field of display and provides a display panel and an image control device and an image control method thereof; wherein, the image control device includes a high-voltage gamma module, a low-voltage gamma module and a first selection module.