Tiled Display Pixel Compensation for Boundary Brightness Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Tiling display devices face issues with brightness deviation and degradation of color reproducibility due to uneven brightness and peak wavelength distribution across display panels.
Innovation Solution
The tiling display device incorporates a design where the brightness of specific colors in adjacent pixel areas is maintained equal, and the sum of brightness for each color in selected pixels is adjusted to compensate for distance deviations between pixels, thereby preventing brightness deviations and improving color reproducibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If display panels are tiled together to form a large display device, then the display area is increased, but brightness deviation and color reproducibility degradation occur at the boundaries between panels
Solution Approach 1:
The patent applies local quality by implementing different brightness compensation strategies for different regions of the display. Specifically, pixels located at boundaries between tiled panels receive specialized compensation treatment compared to pixels in the center of panels. The compensation amount is calculated based on the pixel's position and its neighboring pixels, creating locally adapted brightness correction that addresses boundary-specific issues while preserving overall display uniformity.
2Adaptability or versatility
If the distance between adjacent pixels at boundaries varies, then panel assembly becomes more flexible, but brightness deviation occurs across the display
Solution Approach 1:
The patent employs parameter changes by dynamically adjusting the brightness compensation parameters based on pixel position and distance measurements. The compensation amount is calculated using the actual distances between pixels, which vary due to assembly tolerances. This allows the system to adapt to different panel configurations and distance variations while maintaining uniform brightness perception across the entire tiled display.
3Manufacturing precision
If peak wavelengths of adjacent pixels are not uniform, then color reproducibility is degraded, but maintaining uniform peak wavelengths increases manufacturing complexity
Solution Approach 1:
The patent implements feedback mechanisms by measuring the actual peak wavelengths and brightness characteristics of pixels during or after assembly, then using this information to calculate compensation values. The system continuously monitors display performance and adjusts brightness compensation in real-time based on measured deviations, creating a closed-loop control system that corrects manufacturing variations without requiring extremely tight manufacturing tolerances.
Data Source
AI summary
A tiling display device is disclosed. The tiling display device according to the specification includes a plurality of pixels disposed on a display panel, a first pixel area including a first pixel and second pixel neighboring to each other, and a second pixel area including the first pixel and a third pixel neighboring to each other. The sum of brightness for each color of any one of two pixels selected from the group consisting of the first pixel, the second pixel, and the third pixel is larger than the sum of brightness for each color of each of the pixels between which a distance is relatively smaller than a distance between the two selected pixels. According to the tiling display device according to the specification, it is possible to improve image quality and visibility and prevent the degradation of color reproducibility.