Tiled Display Pixel Pitch Gradient for Joint Inconspicuity
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Solution Overview
Problem
In tiling displays, ensuring a sufficient distance between pixels and unit panels to maintain display quality and prevent panel collisions is challenging, as existing methods do not adequately address the need for a cut margin and wiring layout margin during panel manufacturing.
Innovation Solution
The display apparatus sets the first pixel-to-pixel pitch equal to or larger than the second pixel-to-pixel pitch, with pixel-to-pixel pitches arranged such that P(in) ≤ P(out), and includes a video distortion correction processing unit to correct distortions and a luminance correction processing unit to adjust luminance, ensuring the joints are inconspicuous and the necessary margins are maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the distance between outer end pixels and panel periphery is increased to ensure cut margin and wiring layout margin, then manufacturing feasibility is improved, but joint width is reduced making seams more visible
Solution Approach 1:
The patent applies local quality by differentiating pixel-to-pixel pitches between central and outer peripheral regions. The pitch is set to be smaller in the central region and larger in the outer peripheral region, allowing adequate spacing for manufacturing margins at the edges while maintaining smaller pitch in the center to reduce joint visibility. This spatial variation in pitch configuration resolves the contradiction between manufacturing requirements and display quality.
2Ease of manufacture
If pixel-to-pixel pitch is uniformly increased to ensure manufacturing margins, then ease of manufacture is improved, but display quality deteriorates due to increased joint visibility
Solution Approach 1:
The patent implements local quality through non-uniform pixel-to-pixel pitch configuration where the pitch varies by spatial position. The central region maintains smaller pitch for high display quality, while the outer peripheral region uses larger pitch to accommodate manufacturing margins. This localized differentiation allows each region to be optimized for its specific requirements without compromising overall system performance.
3Object-affected harmful factors
If the array of pixel-to-pixel pitches is configured with P(in)≤P(out), then joint inconspicuity is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by implementing a systematic variation in pixel-to-pixel pitch based on spatial position within the panel. The configuration P(in)≤P(out) is achieved through a regular pattern where pitch increases from center to periphery, creating predictable gradations that can be manufactured using standard fabrication processes. This structured approach to local differentiation achieves joint inconspicuity without excessive manufacturing complexity.
Data Source
AI summary
A display apparatus including a screen portion in which unit panels in which a plurality of pixels formed from light-emitting elements is disposed are arranged, in which a first pixel-to-pixel pitch that is a space between two outer end pixels adjacent to each other across outer peripheries of the unit panels is equal to or larger than a second pixel-to-pixel pitch that is a space between each of the outer end pixels and a pixel adjacent to the outer end pixel, and the pixel-to-pixel pitches adjacent to each other in the array of the pixel-to-pixel pitches in a direction in which the first and second pixel-to-pixel pitches are arranged in the unit panel are set to be P(in)≤P(out) where P(in) denotes the pixel-to-pixel pitch located on a central side of the unit panel and P(out) denotes the pixel-to-pixel pitch located on an outer peripheral side of the unit panel.