Transparent Conductive Patterns for Display Panel Electromagnetic Shielding
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Solution Overview
Problem
Existing display panels in industrial control and aviation fields face issues with electromagnetic shielding, as external shielding films can peel off due to high temperature and humidity, leading to reduced reliability and increased weight.
Innovation Solution
A display panel design featuring first and second transparent conductive patterns on opposing substrates, electrically connected to ground points, which are arranged to cover the display region and provide electromagnetic shielding without the need for adhesive lamination, integrating touch electrodes and display functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an external shielding film layer is fully bonded with adhesive to cover the display screen, then electromagnetic shielding performance is improved, but reliability deteriorates due to peeling off under high temperature and humidity
Solution Approach 1:
The invention extracts the shielding function from the external adhesive-bonded film and relocates it to transparent conductive patterns integrated within the display panel structure itself. This eliminates the adhesive bonding interface that causes peeling under high temperature and humidity, while maintaining electromagnetic shielding performance through the conductive patterns connected to ground points.
Solution Approach 2:
The transparent conductive patterns serve as an intermediary element that provides both structural integration and electromagnetic shielding functionality. These patterns are embedded within the display panel layers and connected to ground points, acting as a mediator between the display structure and electromagnetic interference protection, eliminating the need for external adhesive bonding.
2Object-affected harmful factors
If an external shielding film layer is fully bonded with adhesive to cover the display screen, then electromagnetic shielding performance is improved, but weight increases
Solution Approach 1:
The invention merges the shielding function with the existing display panel structure by integrating transparent conductive patterns into the panel layers. This combines multiple functions (structural support, transparency, and electromagnetic shielding) into a single integrated system, eliminating the need for separate external shielding films and their adhesive layers, thereby reducing overall weight.
Solution Approach 2:
The transparent conductive patterns perform multiple functions simultaneously: they provide electromagnetic shielding, maintain optical transparency, and integrate structurally with the display panel. This multi-functionality eliminates the need for separate dedicated shielding components, reducing the overall weight of the display assembly.
3Object-affected harmful factors
If transparent conductive patterns are provided on both substrates, then electromagnetic shielding is improved, but manufacturing complexity increases
Solution Approach 1:
The invention segments the shielding function across two substrates, with transparent conductive patterns provided on both the first and second substrates. This segmentation allows each substrate to contribute to the overall shielding performance, creating a more effective electromagnetic barrier while distributing the structural complexity across multiple existing components rather than adding a single complex external layer.
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
Enhances reliability and reduces weight while improving electromagnetic compatibility by eliminating the need for adhesive bonding and ensuring comprehensive shielding of internal electrical signals.
Implementation Method 1
When a voltage is applied to the transparent conductive patterns, an electric field is generated, thereby shielding from interference, which is caused by internal electrical signals in the display, to the touch electrodes
Data Source
AI summary
A display panel and a display device are provided in embodiments of the disclosure, including: a first substrate, on a display side of the display panel; and a second substrate opposite to the first substrate; and a first transparent conductive pattern is provided on a side surface of the first substrate facing towards the second substrate, and is arranged to be electrically connected to a ground point.