Display Pixel Electrode Layout for Precise LED Alignment
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Solution Overview
Problem
Existing display devices face challenges in achieving precise alignment of light emitting elements, which affects their performance and efficiency.
Innovation Solution
The display device incorporates alignment electrodes and auxiliary electrodes that are alternately disposed in specific directions to bias the alignment of light emitting elements, with a narrower spacing between alignment electrodes compared to auxiliary electrodes, and includes an auxiliary line and alignment line to enhance alignment precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If alignment electrodes are added to control light emitting elements position, then alignment precision is improved, but device complexity increases
Solution Approach 1:
The alignment control is segmented into two independent electrode systems: alignment electrodes for primary positioning and auxiliary electrodes for secondary positioning. This segmentation allows each electrode type to handle a specific aspect of alignment, improving overall precision while keeping individual electrode functions simple and manageable.
Solution Approach 2:
The auxiliary electrodes act as intermediary elements that work in conjunction with the alignment electrodes. They provide an additional layer of control through perpendicular electric fields, mediating the final positioning of light emitting elements without replacing the primary alignment electrodes.
2Manufacturing precision
If multiple electrode systems are used for alignment, then alignment degree is improved, but manufacturing complexity increases
Solution Approach 1:
Both alignment electrodes and auxiliary electrodes serve the universal function of electric field generation for element positioning. They share the same basic structure and electrical connection method to lines, allowing standardized manufacturing processes to be applied to both electrode types despite their different orientations and spacing.
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
This configuration allows for precise control of the position and direction of light emitting elements, improving alignment and potentially enhancing the performance and efficiency of the display device.
Implementation Method 1
a first alignment electrode and a second alignment electrode that are spaced apart from each other in the pixels and extend in a first direction, a first auxiliary electrode and a second auxiliary electrode that cross the pixels and extend in a second direction intersecting the first direction
Data Source
AI summary
A display device includes pixels in a display area, a first alignment electrode and a second alignment electrode that are spaced apart from each other in the pixels and extend in a first direction, a first auxiliary electrode and a second auxiliary electrode that cross the pixels and extend in a second direction intersecting the first direction, and light emitting elements that are disposed between the first alignment electrode and the second alignment electrode. A first end of the light emitting elements faces the first alignment electrode, and a second end of the light emitting elements faces the second alignment electrode.