Tiled Display Tile Alignment for Z-Direction Flushness and Access
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Solution Overview
Problem
Tiled displays face challenges in maintaining uniform alignment and access due to tolerances in support structures and LED positions, leading to visual artefacts and difficulties in maintenance, especially when mounted on large facades or high locations.
Innovation Solution
The development of an alignment device and method that allows for independent movement of display tiles in the Z direction, using mechanisms like quadrant gears and contact elements to adjust the position of tiles and create gaps for easier access, while maintaining alignment through kinematic pairs that can be deactivated to avoid overconstraint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If clips and receptacles are used to align adjacent display tiles, then alignment precision is improved, but device complexity increases
Solution Approach 1:
The alignment function is divided into two independent segments: clips handle alignment in the display plane (X-Y), while receptacles handle alignment in the perpendicular direction (Z). This segmentation allows each component to specialize in one alignment dimension, achieving high precision without requiring a single complex mechanism to handle all alignment aspects.
Solution Approach 2:
The receptacle acts as an intermediary element that receives the clip from an adjacent tile and provides the alignment constraint in the Z direction. This intermediary mechanism allows two tiles to align with each other through their respective clip-receptacle interactions, distributing the alignment function across multiple simple components rather than requiring a single complex alignment system.
2Manufacturing precision
If reference pins are used to align LED boards with carrier boards, then alignment precision is improved, but LED positioning accuracy deteriorates due to tolerances
Solution Approach 1:
The alignment function is extracted from the LED board-carrier board interface and relocated to the tile-level clip-receptacle mechanism. By separating the alignment function from the electrical connection function, the system can achieve precise alignment without being constrained by tolerances in LED positioning on the LED board, as the clips and receptacles provide the primary alignment reference at the tile level.
3Stability of the object's composition
If tiles are fastened rigidly to the support structure, then structural stability is improved, but ease of maintenance deteriorates due to difficulty in accessing tiles
Solution Approach 1:
The fastening system transitions from a purely rigid connection to a dynamic system where tiles can be easily inserted and removed. The clip-receptacle mechanism provides stable fastening during operation while allowing simple attachment and detachment for maintenance, achieving both structural stability and ease of repair through a mechanism that adapts between these two states.
4Manufacturing precision
If complex mechanical connections are used between tiles, then alignment precision is improved, but ease of operation deteriorates due to difficult installation and adjustment
Solution Approach 1:
The complex alignment function is segmented into simple, standardized clip and receptacle components that can be independently manufactured and assembled. This segmentation transforms a complex mechanical connection into a series of simple, repeatable operations where clips are attached to tiles and engaged with receptacles on adjacent tiles, dramatically simplifying installation while maintaining high alignment precision.
Data Source
AI summary
Tiled displays having display tiles, are described as well as methods of making and/or operating tiled displays and tiles. Methods and devices are described for a tiled display having tiles lying in an X-Y plane, the methods and devices being for setting or adjusting the position of neighbouring tiles in a tiled display to reduce differences in the Z direction between tiles of a tiled display, whereby the tiles lie in the X-Y plane.