Display Device Controller External Light Correction
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Solution Overview
Problem
Display devices with extended display areas, such as those incorporating electronic components, face challenges in maintaining consistent image quality due to differences in external light reflection and emission characteristics between display areas, leading to image quality heterogeneity and reduced display quality.
Innovation Solution
A display device with a controller that corrects pixel values and gamma values based on external light characteristics, ensuring the white color coordinate of one display area matches that of another, using correction values that account for luminance ratios and external light reflection and emission characteristics, thereby minimizing image quality disparities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display device includes an extended display area with electronic components, then the functionality and versatility of the display device are improved, but image quality heterogeneity occurs between different display areas due to differences in external light reflection and emission characteristics
Solution Approach 1:
The patent applies local quality by implementing different correction strategies for different display areas. The controller identifies the first display area (with electronic components) and the second display area (without electronic components) and applies area-specific correction values to compensate for differences in external light reflection and emission characteristics, thereby maintaining overall image quality consistency while preserving the extended functionality.
Solution Approach 2:
The patent utilizes parameter changes by adjusting pixel values and gamma values based on measured or sensed external light conditions. The controller modifies display parameters (luminance, color coordinates) dynamically to compensate for the heterogeneous optical characteristics between the first and second display areas, ensuring consistent image quality across the extended display surface.
2Stability of the object's composition
If correction values are applied to minimize image quality heterogeneity, then image quality consistency between display areas is improved, but the complexity of the control system increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing correction values for different external light conditions in a lookup table. During operation, the controller simply retrieves the appropriate correction values based on sensed light conditions rather than performing complex real-time calculations, thereby reducing control system complexity while maintaining image quality consistency.
Solution Approach 2:
The controller automatically senses external light conditions and applies the appropriate correction values without requiring manual intervention. The system self-adjusts by comparing the optical characteristics of the first and second display areas and autonomously compensates for heterogeneity, simplifying the overall control architecture.
Data Source
AI summary
A display device including: a display panel including first and second display areas, the first display area including first pixels, the second display area including second pixels and a transmission area; a memory storing correction values of a pixel value; a controller generating corrected data by correcting image data using the correction values of the pixel value; and a data driver outputting a data signal corresponding to the corrected data to the display panel, wherein one of the correction values of the pixel value includes a pixel function value for illuminance of external light regarding one of the first pixels and the second pixels, the pixel function value makes a white color coordinate of the first display area equal to a white color coordinate of the second display area based on an external light characteristic, an external light reflection characteristic, and an emission characteristic.