Mirror Display Panel ESD Protection in the Bezel Region
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Solution Overview
Problem
Mirror display apparatuses face issues with static electricity accumulation on metal mirror layers, leading to electrostatic discharge that can damage devices and affect normal operation.
Innovation Solution
A display panel design with an electrostatic protection portion connected to the mirror layer in the bezel region, which includes first and second electrostatic protection sub-portions, utilizing fixed voltage signal terminals and grounding lines to dissipate static electricity, avoiding the need for additional area in the display region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electrostatic protection structure is added to protect the mirror layer, then the mirror layer is protected from electrostatic discharge, but the device complexity increases
Solution Approach 1:
The electrostatic protection portion is merged with the existing bezel region structure. The first electrostatic protection sub-portion utilizes the bonding region and existing signal terminals, while the second electrostatic protection sub-portion uses grounding lines within the bezel region. This integration allows electrostatic protection without adding separate complex structures or reducing the display region.
2Reliability
If electrostatic protection components are added in the display region, then the mirror layer is protected, but the screen-to-body ratio is reduced
Solution Approach 1:
The electrostatic protection components are extracted from the display region and relocated to the bezel region. The first electrostatic protection sub-portion is positioned in the bonding region, and the second electrostatic protection sub-portion is positioned in the bezel region. This extraction ensures that the display region remains intact and the screen-to-body ratio is maintained while still providing comprehensive electrostatic protection.
3Area of stationary object
If the mirror layer is made larger to improve mirror function, then the mirror effect is enhanced, but static electricity accumulation increases
Solution Approach 1:
The electrostatic protection portion acts as an intermediary between the mirror layer and the ground/reference potential. The first electrostatic protection sub-portion provides a discharge path through the bonding region, and the second electrostatic protection sub-portion provides additional discharge paths through grounding lines. These intermediary structures enable safe dissipation of static electricity from the mirror layer without requiring changes to the mirror layer itself.
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
Prevents static electricity accumulation and electrostatic discharge, protecting the mirror layer and ensuring normal operation of the display panel without reducing the screen-to-body ratio.
Implementation Method 1
the electrostatic protection portion is configured to provide electrostatic protection for the mirror layer... transmit static electricity generated on the mirror layer to the at least one first fixed voltage signal terminal
Data Source
AI summary
A display panel has a display region and a bezel region located on side(s) of the display region. The display panel includes a substrate; a plurality of sub-pixels disposed on a side of the substrate and located in the display region; a mirror layer disposed on a side of the plurality of sub-pixels away from the substrate; and an electrostatic protection portion electrically connected to the mirror layer and located in the bezel region. The electrostatic protection portion is configured to provide electrostatic protection for the mirror layer.