Micro LED Display Panel Eutectic Layer Gap Filling
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Solution Overview
Problem
Micro light-emitting diode display panels face issues with light crosstalk due to gaps between baffle wall layers and substrates, affecting display quality and mechanical support under external forces.
Innovation Solution
The eutectic layer is divided into two subsections, where the second eutectic layer subsection overlaps the baffle wall layer to fill gaps and reduce light crosstalk, while also providing mechanical support by filling the gap between the baffle wall layer and the light-emitting substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a baffle wall layer is provided to prevent light crosstalk, then light crosstalk is reduced, but a large gap exists between the baffle wall layer and the substrate, causing light beams to crosstalk and reducing display effect
Solution Approach 1:
The eutectic layer extends in the vertical dimension from the substrate surface up to contact the baffle wall layer, filling the gap space that exists in the conventional two-substrate configuration. This vertical extension eliminates the horizontal gap problem while maintaining the light isolation function.
Solution Approach 2:
The eutectic layer acts as an intermediary structure between the substrate and the baffle wall layer, providing both electrical connection for the micro LEDs and mechanical support to fill the gap, thereby solving both the light crosstalk and support issues simultaneously.
2Object-affected harmful factors
If a baffle wall layer is provided to prevent light crosstalk, then light isolation is improved, but the structure cannot provide effective support when subjected to external forces
Solution Approach 1:
The eutectic layer performs multiple functions: it provides electrical connection for the micro LEDs, fills the gap to prevent light crosstalk, and offers mechanical support to the baffle wall layer structure, thereby solving both optical and mechanical requirements with a single component.
Solution Approach 2:
The use of eutectic material combines electrical conductivity and mechanical strength properties, creating a composite structure that simultaneously achieves electrical connection, optical isolation, and mechanical support functions that single-material solutions cannot provide.
3Ease of manufacture
If the baffle wall layer height is limited due to two-substrate configuration, then substrate alignment is simplified, but the gap between baffle wall layer and substrate increases causing light crosstalk
Solution Approach 1:
The eutectic layer is divided into two functional subsections: the first subsection provides electrical connection to the micro LEDs, while the second subsection extends vertically to fill the gap and provide mechanical support, allowing each part to optimize its specific function.
Data Source
AI summary
Disclosed are a display panel and a display device. The display panel includes a first substrate and a light-emitting substrate disposed opposite to each other. The first substrate includes a first base and a baffle wall layer, the first base includes a display region, and the baffle wall layer is located on a side of the first substrate and in the display region. The light-emitting substrate includes a second base, a eutectic layer and multiple micro light-emitting diodes. The eutectic layer is located on a side of the second base close to the first substrate. The multiple micro light-emitting diodes are located on a side of the eutectic layer close to the first substrate. The eutectic layer includes a first eutectic layer subsection and a second eutectic layer subsection, the first eutectic layer subsection is electrically connected to multiple micro light-emitting diodes.