Multimode Micro-LED Display With Zone-Based Color Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Micro-LED displays in head-mounted devices consume excessive power when displaying high-resolution color images, limiting battery life due to power consumption constraints, especially in bright ambient conditions.
Innovation Solution
A micro-LED display for head-mounted devices is configured to operate in multiple modes, adjusting color, size, and resolution based on criteria such as content type, ambient lighting, and device conditions, optimizing power usage by reducing color channels and resolution in peripheral areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the micro-LED display displays high-resolution color images at full brightness, then the image quality and visibility are improved, but the power consumption increases excessively
Solution Approach 1:
The display is divided into multiple zones with different color configurations. A first area includes three color subpixels (RGB) for full-color display, while a second area includes only one or two color subpixels (e.g., green or cyan) for reduced-color display. This segmentation allows the system to use full color only where necessary while conserving power in peripheral areas.
Solution Approach 2:
Different areas of the display are assigned different color qualities based on their position and importance. The central first area maintains full-color capability with three subpixels per pixel, while the peripheral second area uses reduced-color with one or two subpixels per pixel. This local differentiation optimizes power consumption while preserving visual quality where it matters most.
2Loss of information
If the micro-LED display uses three color subpixels in all areas, then the color display quality is improved, but the power consumption increases
Solution Approach 1:
The patent applies different color information quality to different spatial locations. The first area (central region) uses three color subpixels to preserve full color information, while the second area (peripheral region) uses one or two color subpixels with reduced color information. This local quality differentiation maintains color accuracy where it is most needed while reducing power consumption in less critical areas.
Solution Approach 2:
The display is segmented into a first area with three-color subpixel configuration and a second area with reduced-color subpixel configuration. This segmentation allows the system to preserve color information in the central viewing area while accepting reduced color fidelity in peripheral areas, thereby reducing overall power consumption.
3Adaptability or versatility
If the micro-LED display operates in a single mode, then the device complexity is reduced, but the adaptability to different conditions is limited
Solution Approach 1:
The display system dynamically switches between different operating modes (first mode with three-color subpixels, second mode with reduced-color subpixels) based on real-time conditions such as ambient lighting, content type, and battery status. This dynamic adaptability allows the system to optimize performance for different scenarios without requiring complex manual configuration.
Solution Approach 2:
The display is designed to perform multiple functions through different modes: it can operate in full-color mode for high-quality content, reduced-color mode for power saving, and various intermediate configurations. This multi-functionality is achieved through the flexible zone-based architecture that can adapt to different display requirements without adding significant complexity.
Data Source
AI summary
A multimode micro-LED display for a head-mounted device which can switch between two or more complimentary display modes having different colors and/or resolutions is disclosed. The modes can help a heads-up display using the micro-LED to display information to a user in a variety of display scenarios without simply increasing the power consumed by the micro-LED. The modes can be supported by display software and display hardware. Switching between the alternative modes can be based on the content for display, a user input, an environmental condition, and/or a condition of a head mounted device.