Display Device Color Reproducibility Control Under Illumination
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Solution Overview
Problem
Display devices lack adaptability to external illumination environments, leading to inaccurate reflection of visual sensitivity characteristics, and controlling only luminance is insufficient to address this issue.
Innovation Solution
A display device and data processing apparatus that control color reproducibility and gamut based on external illumination, using a data processor to set color target values and adjust color temperature to match the external light source, thereby improving visibility and reducing glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If only luminance is controlled according to external illumination environment, then visibility is improved, but visual sensitivity characteristics are not accurately reflected
Solution Approach 1:
The patent applies parameter changes by adjusting not only luminance but also color temperature and color gamut based on external illumination conditions. The data processor modifies multiple display parameters (luminance, color temperature, color gamut) to accurately reflect visual sensitivity characteristics under different illumination environments, resolving the limitation of luminance-only control.
2Object-affected harmful factors
If color gamut is reduced under low illumination environment, then glare is reduced, but color reproducibility decreases
Solution Approach 1:
The patent dynamically adjusts color gamut and color temperature parameters based on external illumination levels. Under low illumination conditions, the data processor reduces color gamut to minimize glare while simultaneously adjusting color temperature to maintain perceptual color accuracy, balancing the trade-off between glare reduction and color reproducibility.
Solution Approach 2:
The system implements dynamic parameter adjustment where color gamut, color temperature, and luminance are continuously modified according to real-time external illumination measurements. This dynamic adaptation allows the display to optimize visual comfort and color perception across varying lighting conditions.
3Measurement precision
If color temperature is matched to external light source under high illumination, then visual accuracy is improved, but device complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where an illumination sensor continuously measures external light conditions and feeds this information to the data processor. The processor then adjusts color temperature and other display parameters accordingly, creating a closed-loop system that maintains visual accuracy without requiring complex manual intervention.
Solution Approach 2:
The display device performs self-adjustment of color temperature and color gamut based on autonomous illumination sensing and processing. The system automatically adapts to external lighting conditions without user intervention, reducing the operational complexity despite the sophisticated control algorithms involved.
Data Source
AI summary
Provided is a display device including: a data processor controlling color reproducibility of RGB data under a low illumination environment to process an input image signal; a signal controller dividing the input image signal in a frame unit according to a vertical synchronization signal and the input image signal in a scan line unit according to a horizontal synchronization signal to generate an image data signal; and a data driver receiving the image data signal to transfer a plurality of data signals to each of the plurality of data lines coupled to a plurality of pixels. The display device reduces glaring and provides a higher-definition image to a user due to the accurate representation of neutral white under the high illumination environment.