Display Device Electrode Transition Zone Boundary Visibility
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Solution Overview
Problem
Display devices face challenges in minimizing the visibility of boundaries between different emission areas with varying densities, leading to distinguishable areas within the display region.
Innovation Solution
A display device design incorporating a main display area and a sub-display area with specific arrangements of main pixel electrodes, sub-pixel electrodes, and dummy pixel electrodes, along with connection electrodes, to reduce the visibility of boundaries by adjusting the spacing and overlap of these electrodes and including additional light emitting elements between different display areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmission parts are concentrated in a specific sub-display area, then the main display area can achieve high emission density, but a visible boundary and distinguishable area appear between the main display area and sub-display area
Solution Approach 1:
The patent applies local quality by creating a transition zone with intermediate emission density between the high-density main display area and the transmission-part-containing sub-display area. This transition zone uses a specific arrangement of pixel electrodes and connection electrodes to gradually change the emission characteristics, making the boundary imperceptible while maintaining high productivity in the main area.
Solution Approach 2:
The patent introduces a transition zone as an intermediary region between the main display area and sub-display area. This transition zone contains pixel electrodes and connection electrodes that mediate the optical transition, preventing the direct visual contrast between high-density and transmission areas, thus resolving the boundary visibility issue.
2Manufacturing precision
If pixel electrodes are arranged closely to increase emission density, then display resolution improves, but the boundary between different display areas becomes more visible
Solution Approach 1:
The patent segments the display area into three distinct zones: main display area with high emission density, transition zone with intermediate density, and sub-display area with transmission parts. This segmentation allows each zone to be optimized independently for its specific function while maintaining overall visual coherence through the gradual transition.
Solution Approach 2:
The patent addresses the boundary visibility problem by introducing a spatial dimension - the transition zone acts as a buffer region in the spatial arrangement. By extending the display structure in this intermediate zone with specific electrode arrangements, the patent creates a gradual optical transition that eliminates sharp boundaries while preserving high resolution characteristics.
3Reliability
If connection electrodes are added to connect pixel electrodes across areas, then electrical connectivity is improved, but the structural complexity and boundary visibility increase
Solution Approach 1:
The connection electrodes in the transition zone serve multiple functions: they provide electrical connectivity between pixel electrodes across different display areas, creates the gradual emission density transition, and eliminate boundary visibility. This multi-functionality reduces the need for separate components and simplifies the overall structure despite the increased connectivity requirements.
Data Source
AI summary
A display device includes: a main display area and a sub-display area having a plurality of transmission parts; a plurality of main pixel electrodes; a plurality of sub-pixel electrodes and a plurality of dummy electrodes in the sub-display area, the dummy electrodes being electrically connected to any one of the main pixel electrodes; and a plurality of connection electrodes connecting any one of the plurality of main pixel electrodes and any one of the plurality of dummy pixel electrodes to each other, wherein the sub-display area includes a first sub-display area having the transmission parts and the sub-pixel electrodes and a second sub-display area having the sub-pixel electrodes and the dummy pixel electrodes, and at least portions of the plurality of connection electrodes are between the dummy pixel electrodes adjacent to each other or between the dummy pixel electrode and the main pixel electrode adjacent to the dummy pixel electrode.