Display Panel Circuit Layout for Reliable Micro-LED Transfer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In display devices with inorganic light emitting diodes, there are issues with light emitting diodes not being transferred to the display area due to step differences in non-display areas, leading to reliability concerns and potential moisture penetration.
Innovation Solution
A display panel design with a circuit layer on a substrate, featuring driving and non-driving lines, including dummy floating lines, to facilitate proper transfer of light emitting diodes and enhance reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If inorganic light emitting diodes are transferred to the display area, then the display device can achieve higher brightness and luminous efficiency, but step differences in non-display areas cause light emitting diodes to fail to transfer properly, reducing reliability
Solution Approach 1:
The patent applies preliminary action by forming a filling pattern in the non-display area before the light emitting diode transfer process. This filling pattern is created in advance to flatten the surface and eliminate step differences that would otherwise prevent proper light emitting diode transfer. By preparing this structural modification beforehand, the patent ensures that subsequent light emitting diode transfer to the display area proceeds reliably without contamination or misalignment issues.
2Device complexity
If the circuit layer includes only driving lines, then the structure is simpler, but light emitting diodes may not transfer properly due to step differences in non-display areas
Solution Approach 1:
The patent applies segmentation by dividing the circuit layer into distinct functional components: driving lines for electrical signal transmission and dummy floating lines for structural support during transfer. The dummy floating lines are segmented separately and positioned in the non-display area, creating a dedicated structural function that does not interfere with the driving lines' electrical function. This segmentation allows each component to serve its specific purpose without compromising the other.
Solution Approach 2:
The dummy floating lines act as an intermediary element between the non-display area and the display area. These lines serve as a structural mediator that fills the step difference created by the non-display area, providing a transition surface that facilitates smooth light emitting diode transfer from the non-display area into the display area without direct contact or interference with the driving lines.
3Strength
If external particles such as moisture penetrate into the display device, then the device structure remains intact, but accumulated particles cause reliability issues
Solution Approach 1:
The patent extracts and isolates the dummy floating lines as a separate structural element in the non-display area. By taking out these lines from the main display area and positioning them in the non-display area, the patent creates a physical barrier and structural separation that prevents moisture and external particles from penetrating into the display area. This extraction strategy maintains structural integrity while blocking harmful contaminants.
Data Source
AI summary
The present specification provides a display panel and a display device including the same, and the display panel includes a circuit layer disposed on a substrate and a plurality of light emitting diodes disposed on the circuit layer, wherein the circuit layer includes a plurality of driving lines disposed on the substrate and electrically connected to the light emitting diodes disposed in a display area among the plurality of light emitting diodes and a plurality of non-driving lines disposed on the substrate in a non-display area outside the display area, and at least one of the non-driving lines includes a plurality of dummy floating lines electrically separated from the light emitting diodes and the driving lines.