OLED Display Panel Electrode Isolation for Integrated Touch
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Solution Overview
Problem
Existing OLED display devices with add-on touch modules increase structural complexity and thickness, leading to potential short-circuit connections between electrodes.
Innovation Solution
A display panel design featuring an isolation structure with isolation portions and openings, separating first electrodes and touch electrodes, reducing the likelihood of short-circuit connections and simplifying the structure by integrating the touch function into the display panel without a separate touch structure layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an add-on touch module is attached to the display screen surface, then touch functionality is achieved, but structural complexity and thickness increase
Solution Approach 1:
The patent merges the touch electrode layer and display electrode layer into a single functional layer, eliminating the need for a separate add-on touch module. The isolation structure integrates both touch and display functions within the same panel structure, reducing overall structural complexity while maintaining touch functionality.
Solution Approach 2:
The functional layer serves dual purposes: it acts as both the touch sensing layer (with touch electrodes) and the display driving layer (with first electrodes for light-emitting units). This multi-functional design eliminates the need for separate touch and display structures, reducing thickness and structural complexity.
2Adaptability or versatility
If an add-on touch module is attached to the display screen surface, then touch functionality is achieved, but thickness increases
Solution Approach 1:
The patent combines the touch electrode layer and display electrode layer into a single functional layer, eliminating the need for a separate add-on touch module. This integration significantly reduces the overall thickness of the display device while maintaining full touch functionality.
Solution Approach 2:
The functional layer performs both touch sensing and display driving functions simultaneously, eliminating the need for additional thickness-consuming layers. The isolation structure enables this multi-functionality within a thin integrated design.
3Device complexity
If touch electrodes and first electrodes are arranged closely without isolation, then structural simplicity is maintained, but short-circuit connection risk increases
Solution Approach 1:
The patent segments the functional layer into distinct regions using the isolation structure, which divides the space between touch electrodes and first electrodes. This segmentation provides electrical isolation while maintaining a relatively simple overall structure, reducing short-circuit risk without excessive complexity.
Solution Approach 2:
The isolation structure acts as an intermediary element between the touch electrodes and first electrodes, providing electrical isolation and preventing short-circuit connections. This mediator structure maintains reliability while keeping the design simple and integrated.
Data Source
AI summary
Embodiments of the present application provide a display panel and a display apparatus. The display panel includes: a substrate; an isolation structure, the isolation structure including isolation portions, and a light-emitting unit being provided within a corresponding one of the isolation openings; and a functional layer including first electrodes and touch electrodes, a corresponding one of the first electrodes being arranged within a corresponding one of the isolation openings and located on a side of the light-emitting unit away from the substrate, the touch electrodes being located on a side of the isolation portions away from the substrate, and the first electrodes being insulated and spaced apart from the touch electrodes. In the present application, by arranging the isolation structure, the functional layer can be separated into the first electrodes and the touch electrodes, simplifying the structure of the display panel without separately providing a touch structure layer.