Varying Sub-Pixel Area for Bit-Depth and Wide-View Trade-offs
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Solution Overview
Problem
Conventional displays face limitations in trading off resolution within a single color channel for increased bit-depth, improved wide-view performance, response time, or other display metrics, as they are unable to provide multiple configurations of pixel luminances within a group of same-color-type sub-pixels with differing areas while maintaining a fixed overall luminance.
Innovation Solution
A color display with composite pixels having sub-pixels of different color types with varying luminance capabilities, achieved by altering the relative areas of sub-pixels within each pixel, and an image data processing unit that modifies input data to account for these luminance discrepancies, allowing for improved display performance by transferring luminance between sub-pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sub-pixels of the same color type are made with equal area in all composite pixels, then the display structure is simple and manufacturing is easy, but the ability to trade off resolution for increased bit-depth or improved wide-view performance is lost
Solution Approach 1:
The patent applies local quality by making sub-pixels of the same color type have different areas within different composite pixels. Specifically, some composite pixels contain same-color sub-pixels with larger areas while others contain smaller area sub-pixels of the same color. This local variation in sub-pixel area enables the display to trade off resolution within a single color channel for increased bit-depth and improved wide-view performance, while the overall pixel structure remains manageable through systematic patterns.
Solution Approach 2:
The patent segments the display into groups of composite pixels, where each group contains sub-pixels of the same color type with varying areas. By organizing the display in this segmented manner and using image data processing to redistribute luminance across the group, the system achieves enhanced adaptability for different display metrics while maintaining a structured approach to the complexity of varying sub-pixel geometries.
2Measurement precision
If sub-pixels of the same color type have different areas in different composite pixels, then bit-depth and wide-view performance are improved, but the image processing complexity increases due to luminance redistribution requirements
Solution Approach 1:
The patent applies preliminary action by implementing image data processing that anticipates and compensates for the varying sub-pixel areas before display. The system pre-calculates and redistributes luminance values across sub-pixels of the same color type with different areas, ensuring that the final displayed image maintains the intended precision and quality. This preliminary processing approach enables the system to achieve increased bit-depth precision while managing the complexity through systematic luminance redistribution algorithms.
3Quantity of substance
If sub-pixels of the same color type have different areas, then more average luminance gradations can be provided, but maintaining fixed overall luminance becomes more difficult
Solution Approach 1:
The patent applies feedback through image data processing that continuously adjusts luminance distribution across sub-pixels of the same color type with different areas. The system monitors the overall luminance output and redistributes luminance values to compensate for variations in individual sub-pixel areas, ensuring that the composite pixel maintains the intended fixed overall luminance. This feedback mechanism enables the display to provide more average luminance gradations while automatically maintaining luminance consistency across the display.
Data Source
AI summary
A color display includes multiple composite pixels, each composite pixel including sub-pixels of more than one color type. Sub-pixels of at least one of the color types are provided with differing luminance capability in different composite pixels. Each composite pixel may include red, green and blue sub-pixels having different luminance capability in different composite pixels. The differing luminance capability may be achieved by providing sub-pixels of at least one of the color types of differing relative area. An image data processing unit (IDPU) receives input image data of a standard format, and modifies the input image data into output image data for display to account for a discrepancy between the luminance capability based on the differing luminance capability or differing size of each sub-pixel, and a luminance capability as expected based on the input image data. The IDPU then outputs the output image data to control the composite pixels.