Light-Emitting Element Alignment Mesh for Dark Spot Prevention
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Solution Overview
Problem
Display devices face issues with dark spots and IR drop due to uneven distribution of light emitting elements and lack of secure overlapping connections in their electrical connections.
Innovation Solution
A display device design that includes a specific arrangement of voltage lines, data lines, and alignment lines with a mesh structure to ensure even distribution of light emitting elements and secure connections, achieved through primary and secondary alignment processes and electrical connections to high or low potential lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If light emitting elements are densely arranged to improve display resolution, then display quality is improved, but uneven distribution causes dark spots
Solution Approach 1:
The patent applies preliminary action by performing multiple alignment processes (first alignment process and second alignment process) before the light emitting elements are fully operational. The first alignment process positions the light emitting elements at a preliminary stage, and the second alignment process refines their positions, ensuring even distribution across the display panel before final operation, thus preventing dark spots while achieving high display quality
Solution Approach 2:
The patent implements feedback mechanisms by using alignment lines and alignment signals to monitor and adjust the positions of light emitting elements. The alignment lines provide reference positions, and alignment signals are applied to adjust element positions based on detected deviations, ensuring uniform distribution and preventing dark spots while maintaining high display resolution
2Device complexity
If alignment lines are electrically isolated to simplify the structure, then device complexity is reduced, but IR drop occurs due to insufficient electrical connections
Solution Approach 1:
The patent applies universality by designing alignment lines that serve dual functions: they provide positional references for aligning light emitting elements and simultaneously serve as electrical connection pathways. The alignment lines are electrically connected to voltage lines, enabling them to supply power and reduce IR drop while maintaining their alignment function, thus eliminating the need for separate connection structures and simplifying the overall device complexity
Solution Approach 2:
The patent merges the alignment function and electrical connection function into a single integrated structure. The alignment lines are combined with voltage lines such that the same conductive elements perform both alignment reference and power supply roles, reducing the number of separate components and connections while ensuring sufficient electrical connectivity to prevent IR drop
Data Source
AI summary
A display device where it is possible to prevent dark spots by aligning the light emitting elements through a primary alignment process followed by a secondary alignment process to evenly distribute the light emitting elements, and to secure overlapping connections and prevent a voltage drop by electrically connecting all alignment lines to high potential lines and low potential lines having a mesh structure after the alignment process is completed.