Light Emitting Display Touch Electrode Merging
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Solution Overview
Problem
The increasing number of touch lines in light emitting display panels leads to increased parasitic capacitance and reduced aperture ratio, deteriorating the quality and efficiency of the display.
Innovation Solution
Connecting at least two touch electrodes with a single touch line, where the areas of the touch electrodes are different from each other, to minimize the number of touch lines and reduce parasitic capacitance while maintaining or improving touch sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of touch electrodes is increased, then touch sensitivity is improved, but parasitic capacitance between electrodes and touch lines is increased
Solution Approach 1:
Multiple touch electrodes are merged and connected to a single touch line, reducing the total number of touch lines while maintaining the functionality of multiple touch electrodes. This consolidation reduces parasitic capacitance between touch lines and electrodes while preserving touch sensitivity through the shared connection architecture.
Solution Approach 2:
A single touch line is designed to serve multiple touch electrodes simultaneously, making the touch line multi-functional. This universal connection approach allows one touch line to handle signals from multiple electrodes, reducing the overall number of touch lines needed and thereby reducing parasitic capacitance.
2Adaptability or versatility
If the number of touch lines is increased, then more touch electrodes can be connected, but aperture ratio of the display panel is reduced
Solution Approach 1:
Multiple touch electrodes are combined under a single touch line connection, reducing the total number of touch lines required across the display panel. Fewer touch lines mean less material occupation and smaller spacing requirements, thereby increasing the aperture ratio while still supporting multiple touch electrodes.
Solution Approach 2:
Touch lines are designed with multi-functionality to serve multiple electrodes, reducing the total count of touch lines needed. This reduction in touch line quantity directly increases the aperture ratio by minimizing the area occupied by touch line structures while maintaining the ability to connect multiple touch electrodes.
3Adaptability or versatility
If the number of touch lines is increased, then more touch electrodes can be connected, but quality of the display apparatus is deteriorated
Solution Approach 1:
Multiple touch electrodes are merged into fewer touch line connections, reducing parasitic capacitance effects that degrade signal quality. This consolidation improves the overall quality of the display apparatus by minimizing unwanted electrical interactions while still supporting multiple touch electrodes through the shared connection structure.
Solution Approach 2:
Touch lines are designed as universal connections that can serve multiple electrodes without compromising signal integrity. This multi-functional design maintains quality by reducing the number of connections needed, thereby minimizing parasitic capacitance and improving signal-to-noise ratio while still providing versatile touch electrode connectivity.
Data Source
AI summary
A light emitting display apparatus is provided, in which at least two touch electrodes are connected with a touch driver through a single touch line and their areas are different from each other, and the light emitting display apparatus comprises a substrate, touch electrodes provided on the substrate, touch lines provided on the substrate, a cover layer covering the touch electrodes and the touch lines, a light emitting driving layer provided on an upper end of the cover layer, and a touch driver connected with the touch lines, wherein at least two touch electrodes are connected to one touch line, and areas of at least two touch electrodes connected to one touch line are different from each other.