Crossed Alignment Electrodes for Precise LED Display Assembly
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Solution Overview
Problem
Current display devices face challenges in achieving precise alignment of light emitting elements, which affects the overall display quality and efficiency.
Innovation Solution
A display device design featuring first and second electrodes spaced apart, with third and fourth electrodes intersecting these, and light emitting elements positioned between them, utilizing distinct alignment signals to align the elements' position and direction, enhancing alignment precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single alignment method is used for light emitting elements, then the manufacturing process is simple, but the alignment precision is insufficient
Solution Approach 1:
The alignment electrode structure is segmented into two distinct sets: first alignment electrodes extending in a first direction and second alignment electrodes extending in a second direction. Each set performs a specific alignment function, with the first alignment electrodes establishing initial positioning and the second alignment electrodes providing orthogonal positioning. This segmentation allows precise two-dimensional alignment of light emitting elements while maintaining a systematic and manageable manufacturing process.
2Manufacturing precision
If multiple alignment electrodes are used to improve alignment precision, then the alignment degree of light emitting elements is improved, but the device complexity increases
Solution Approach 1:
The first and second alignment electrodes serve multiple functions within the display device structure. They not only provide alignment signals for positioning light emitting elements but also function as part of the overall electrode architecture that may include connection to driving circuits. This multi-functionality reduces the need for separate dedicated alignment structures, thereby limiting the increase in device complexity while achieving improved alignment precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method improves the alignment degree of light emitting elements, leading to better display quality and efficiency by precisely controlling their position and direction.
Implementation Method 1
aligning light emitting elements between first alignment electrodes by applying a first alignment signal to the first alignment electrodes, and secondly aligning the light emitting elements by applying a second alignment signal to second alignment electrodes crossing the first alignment electrodes
Data Source
AI summary
A display device includes a first electrode and a second electrode spaced apart from each other, a third electrode and a fourth electrode intersecting the first and second electrodes and spaced apart from each other, and light emitting elements disposed between the first and second electrodes. A first end of each of the light emitting elements faces the third electrode, and a second end of each of the light emitting elements faces the fourth electrode.