Segmented Reflective Layer for Anti-Static Display Encapsulation
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Solution Overview
Problem
In organic light-emitting display panels, static electricity introduced during manufacturing can degrade the anti-static performance due to the presence of reflective metal layers in the encapsulation region, which affects the encapsulation efficiency and overall display panel performance.
Innovation Solution
A reflective layer is strategically positioned between the substrate and the encapsulation layer, comprising discrete reflective regions with predetermined gaps to reduce static electricity introduction while maintaining encapsulation efficiency, by ensuring the reflective regions are discontinuous and reducing their area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reflective metal layer is disposed under the glass frit to enhance laser irradiation and melting effect, then the encapsulation performance is improved, but the anti-static performance of the display panel deteriorates due to static electricity introduction
Solution Approach 1:
The reflective metal layer is segmented into a first reflective region and a second reflective region separated by a gap. This segmentation disconnects the continuous metal path, preventing static electricity from being introduced into the display panel while maintaining the reflective function for laser irradiation in the encapsulation region.
Solution Approach 2:
The reflective metal layer is selectively disposed only in the encapsulation region where laser irradiation is needed for glass frit melting, rather than covering the entire panel. This local configuration maintains encapsulation performance while reducing the overall area that could generate or conduct static electricity.
2Productivity
If the reflective metal layer is disposed in the encapsulation region to accelerate glass frit melting, then the manufacturing efficiency is improved, but the static electricity generation during cutting, rubbing or transportation increases
Solution Approach 1:
By dividing the reflective metal layer into discrete first and second reflective regions with a gap between them, the structure maintains sufficient reflective area for efficient glass frit melting during manufacturing, while the gap prevents continuous static electricity conduction paths that would occur with a solid continuous layer.
Solution Approach 2:
The harmful continuous metal path is extracted by introducing a gap between the first and second reflective regions. This removes the static electricity conduction function while preserving the laser reflection function needed for manufacturing efficiency.
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 enhances the anti-static capability of the display panel by disconnecting the static electricity transmission paths and reducing the risk of electrostatic interference, while maintaining effective encapsulation performance through controlled laser irradiation and heat transfer.
Implementation Method 1
a reflective metal layer is often disposed under the glass frit, and the laser beam is reflected by the reflective metal layer to achieve the second laser irradiation, thereby accelerating the melting process of the glass frit
Implementation Method 2
During the manufacturing process, the glass frit is irradiated by a laser beam to be heated and melted, thereby bonding the two opposite substrates together
Data Source
AI summary
A display panel comprises a first substrate; a second substrate; a display region; an encapsulation region disposed at a periphery of the display region; an encapsulation layer disposed at the encapsulation region and between the first and second substrates; and a reflective layer disposed at the encapsulation region and between the first substrate and the encapsulation layer. The reflective layer includes a first reflective region and a second reflective region configured to satisfy one of the following: in a first direction, a gap between the first and second reflective regions is greater than or equal to a first predetermined distance, the first direction being from the display region to the encapsulation region, and in a second direction, a gap between the first and second reflective regions is greater than or equal a second predetermined distance, the second direction being parallel to the first substrate and perpendicular to the first direction.