Pixel-Region Wavelength Layout for Uniform Display Brightness
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Solution Overview
Problem
Conventional display manufacturing technologies face challenges in achieving uniformity and stability of image quality due to wavelength differences among light emitting diodes, leading to high costs and inefficient utilization, especially when using wider wavelength distributions.
Innovation Solution
A display design with multiple pixel regions and a controller that adjusts intervals between lighting units based on detected distances, allowing for periodic arrangement of wavelength parameters and optional unit turn-off or movement to maintain uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If light emitting diodes with narrow wavelength range are used, then image uniformity is improved, but manufacturing cost increases and utilization decreases
Solution Approach 1:
The patent applies local quality by allowing different wavelength parameters at different spatial positions in the display. Instead of requiring all LEDs to have uniform narrow wavelengths, the system permits wavelength variations across different pixel regions, with each region having optimized local wavelength characteristics. This resolves the contradiction by accepting local wavelength diversity to achieve global image uniformity while using broader wavelength range LEDs, thereby reducing manufacturing costs.
Solution Approach 2:
The patent changes the wavelength parameter distribution strategy from uniform narrow range to controlled broader range with periodic arrangement. By systematically arranging LEDs with different wavelength parameters in periodic patterns across pixel regions, the system achieves image uniformity through spatial parameter variation rather than restricting parameter range, thus lowering manufacturing requirements and costs.
2Ease of manufacture
If light emitting diodes with wider wavelength distribution range are used, then manufacturing cost decreases, but image uniformity deteriorates
Solution Approach 1:
The patent segments the display into multiple pixel regions, each containing lighting units with specific wavelength parameter arrangements. By dividing the overall display structure into manageable pixel regions with controlled wavelength distributions, the system can use broader wavelength range LEDs while maintaining image uniformity through localized wavelength management, thus resolving the contradiction between cost and quality.
Solution Approach 2:
The patent implements periodic action through the periodic arrangement of wavelength parameters across pixel regions. LEDs with different wavelength parameters are arranged in repeating periodic patterns, creating a structured wavelength distribution that averages out color variations across the display. This periodic structure enables the use of wider wavelength range LEDs while maintaining perceived image uniformity, resolving the contradiction between manufacturing cost and image quality.
3Device complexity
If the interval between lighting units is fixed, then device complexity is reduced, but adaptability to different viewing distances deteriorates
Solution Approach 1:
The patent applies dynamics by making the interval between lighting units adjustable rather than fixed. The system can dynamically change the effective interval by selectively activating or deactivating certain lighting units based on detected viewing distance. This dynamic adjustment capability enables the display to adapt to different viewing conditions without requiring a completely reconfigurable physical structure, thus resolving the contradiction between structural simplicity and viewing adaptability.
Solution Approach 2:
The patent implements self-service through automatic interval adjustment based on viewing distance detection. The system autonomously determines the appropriate lighting unit interval by detecting viewer distance and selectively controlling LED activation without requiring manual intervention or complex mechanical reconfiguration. This self-adjusting mechanism provides viewing distance adaptability while maintaining relatively simple device structure, resolving the identified contradiction.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures preferred image uniformity and stability by minimizing intensity and chroma differences between adjacent pixel regions, utilizing wider wavelength ranges while reducing manufacturing costs.
Implementation Method 1
The display includes multiple pixel regions. Each of the multiple pixel regions includes a plurality of lighting units arranged as an array and has a plurality of wavelength parameters respectively
Data Source
AI summary
A display having a related manufacturing method includes some pixel regions and a controller. Each pixel region includes a plurality of lighting units arranged as a matrix and respectively having a plurality of wavelength parameters. An arrangement rule of the plurality of wavelength parameters of one of the pixel regions is similar to an arrangement rule of the plurality of wavelength parameters of another pixel region. The controller is electrically connected to the pixel regions and adapted to change a distance between two adjacent lighting units of the pixel regions. An average intensity difference between two adjacent pixel regions inside the display is smaller than or equal to five percent. An average chroma difference between two adjacent pixel regions inside the display is smaller than or equal to 0.01.