Display Base Plate Anti-Static Edge Layer for OLED Screen Greening
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Solution Overview
Problem
The accumulation of electrostatic charges on OLED touch screens due to finger sliding causes polarization reactions, leading to deviations in thin-film transistor characteristics and screen greening, deteriorating display performance.
Innovation Solution
Incorporating an anti-static layer within the edge region of the displaying base plate, integrated with the touch unit in the same layer or adjacent to it, to block and dissipate electrostatic charges, reducing their conduction to the driving unit and minimizing transistor deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an anti-static layer is added to block electrostatic charges, then screen greening is prevented, but device complexity increases
Solution Approach 1:
The anti-static layer is merged with the touch unit structure, where the anti-static layer and touch electrode layer are integrated in the same layer or adjacent layers. This combining approach prevents screen greening while avoiding the complexity of completely separate anti-static and touch structures.
Solution Approach 2:
The touch unit structure is designed to serve multiple functions: it provides touch sensing capability while simultaneously serving as the anti-static layer to dissipate electrostatic charges. This multi-functionality reduces the need for additional dedicated anti-static structures.
2Ease of manufacture
If the anti-static layer is integrated with the touch unit in the same layer, then manufacturing complexity is reduced, but touch sensitivity may be affected
Solution Approach 1:
The anti-static layer is positioned specifically in the edge region of the display, which is where electrostatic charge accumulation most commonly occurs. This localized approach maintains touch sensitivity in the central active area while providing anti-static protection where it is most needed.
Solution Approach 2:
The anti-static function is implemented partially by concentrating the anti-static layer in the edge region rather than uniformly across the entire display. This partial implementation is sufficient to prevent screen greening while minimizing impact on touch sensitivity.
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 anti-static layer effectively reduces the conduction of electrostatic charges, minimizing transistor deviations and improving display quality by preventing screen greening.
Implementation Method 1
an anti-static layer disposed on the substrate, wherein the anti-static layer is located at least within the edge region
Data Source
AI summary
The present application provides a displaying base plate and a displaying device, which relates to the technical field of displaying. The displaying device can ameliorate the problem of screen greening caused by electrostatic charges, thereby improving the effect of displaying. The displaying base plate includes an active area and a non-active area connected to the active area, the non-active area includes an edge region and a first-dam region, and the first-dam region is located between the active area and the edge region; the displaying base plate further includes: a substrate; an anti-static layer disposed on the substrate, wherein the anti-static layer is located at least within the edge region; and a driving unit and a touch unit that are disposed on the substrate, wherein the driving unit is located within the active area.