LED Display Tile Blending Region and Calibration

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Solution Overview

Problem

Large LED displays constructed from tiles often face challenges with misalignment, leading to visible seams between tiles, which are inefficient, costly, and difficult to install and maintain, especially in cinema applications where premium image quality is expected.

Innovation Solution

A light emitting display system that allows for less precise alignment of tiles by implementing a blending region with a higher density of light emitting elements at the edges, combined with a calibration process using image sensors to modify image data and compensate for misalignments, ensuring high-quality image presentation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If tiles are mounted with precise alignment to avoid visible seams, then image quality is improved, but installation complexity and time increase

Engineering Contradiction:
Improvetile alignment precisionVSAvoidinstallation time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent changes the physical parameters of the tile edges by creating protrusions and recesses that interlock. This mechanical feature transformation allows tiles to self-align and maintain precise positioning without requiring extremely careful manual alignment during installation, thus reducing installation time while preserving image quality.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The protrusion and recess structures act as intermediary mechanical features between adjacent tiles. These features mediate the alignment process by providing physical guidance and constraint, enabling installers to achieve precise tile positioning more easily and quickly without requiring specialized skills or tools.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If tiles are mounted with precise alignment to avoid visible seams, then image quality is improved, but installation cost increases

Engineering Contradiction:
Improvetile alignment precisionVSAvoidinstallation ease
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

By transforming the tile edge geometry to include interlocking protrusions and recesses, the patent changes the installation process from requiring high-precision manual alignment to a more forgiving mechanical assembly process. This reduces the need for skilled labor and specialized installation equipment, thereby lowering installation costs while maintaining precise tile alignment for image quality.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The tile edge is segmented into complementary protrusion and recess features that can be independently manufactured. This segmentation allows for standardized mass production of tile components, reducing manufacturing complexity and cost, while the interlocking features ensure precise alignment during installation.

Inventive Principle:
Principle #1Segmentation

3Manufacturing precision

If tiles are mounted with precise alignment to avoid visible seams, then image quality is improved, but maintenance difficulty increases

Engineering Contradiction:
Improvetile alignment precisionVSAvoidtile maintenance ease
Core Design Contradiction:
Manufacturing precisionVSEase of repair

Solution Approach 1:

The interlocking protrusion and recess features create distinct, separable connection points between tiles. This segmentation allows individual tiles to be accessed and removed for maintenance without requiring disturbance of the entire display wall, making maintenance easier while preserving the precise alignment needed for image quality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mechanical interlocking features serve as intermediaries that provide both alignment during installation and access points during maintenance. These features mediate between the need for precise positioning and the need for easy removal, allowing tiles to be securely mounted yet easily accessed for repair or replacement.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS20230306931A1Light emitting display with tiles and data processing
Publication Date: 2023.09.28 IMAX CORP
  • US20230306931A1 patent drawing
  • US20230306931A1 patent drawing
  • US20230306931A1 patent drawing

AI summary

A light emitting display can be formed from tiles mounted within a certain distance range with respect to each other and with an established blending region positioned towards the edges of the tiles. A tile can be a matrix of light emitting elements, such as LEDs, OLEDs, quantum dots, or other element that emits light. The tolerance of spacing between tiles can allow for less precision in alignment during installation in a theatre, thereby reducing display assembly cost but still maintaining a display for displaying an image at a high quality with reduced or eliminated appearance of visual artifacts between tiles.