EL Panel Buffer Structure Prevents Dot Defects
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Solution Overview
Problem
Conventional EL panels suffer from dot defects and reduced yield due to water-absorbent material grains coming into contact with the EL device, causing damage when the panel is pressed or twisted, leading to compromised display quality and lifespan.
Innovation Solution
A buffer structure is introduced on the cover, positioned closer to the EL device than the water-absorbent material, with openings or designs that allow the water-absorbent material to absorb mist while maintaining a distance from the EL device, preventing scratches and defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water-absorbent material is disposed on the cover for absorbing mist, then humidity inside the panel is decreased, but grains of the water-absorbent material may come out and alight on the EL device, causing dot defects when the panel is pressed or twisted
Solution Approach 1:
A buffer structure is introduced as an intermediary element between the water-absorbent material and the EL device. This buffer structure prevents direct contact between the grains of water-absorbent material and the EL device, thereby eliminating the harmful effect of grains causing dot defects while maintaining the humidity-absorbing function of the water-absorbent material.
2Reliability
If water-absorbent material is placed close to the EL device for effective humidity control, then humidity absorption is improved, but the risk of grains damaging the EL device increases
Solution Approach 1:
The buffer structure serves as a protective intermediary layer that allows the water-absorbent material to be positioned close to the EL device for effective humidity control while preventing the harmful contact between grains and the EL device surface.
3Ease of operation
If the EL panel is pressed or twisted, then flexibility and ease of handling are improved, but dot defects occur due to grains pressing onto the EL device pixels
Solution Approach 1:
The buffer structure provides beforehand cushioning protection to the EL device. When the panel is pressed or twisted, the buffer structure absorbs and distributes the mechanical stress, preventing grains from directly pressing onto the EL device pixels and causing dot defects, thus maintaining pixel integrity during flexible handling.
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 buffer structure enhances the EL panel's durability and yield rate by preventing direct contact between the water-absorbent material grains and the EL device, thus avoiding dot defects and extending the panel's lifespan.
Implementation Method 1
The water-absorbent material 13 is a drying agent. The grains of the water-absorbent material 13 may come out and alight on the upper surface of the EL device 12
Implementation Method 2
the water-absorbent material absorbs the mist and decreases the humidity inside the panel after packaging
Data Source
AI summary
An electro-luminescence (EL) panel is provided. The EL panel comprises a substrate, a cover, an EL device, and a buffer structure. The cover is disposed above the substrate. The EL device is disposed on the substrate and between the substrate and the cover. The buffer structure is disposed on the cover and between the EL device and the cover.