Flexible Display Metal Mesh Touch Electrode Light Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible display screens, such as AMOLEDs, face issues with light shielding due to the use of metal mesh touch electrodes, which affects the optical effect and transmittance of the display.
Innovation Solution
Reducing the arrangement density of metal traces in the metal mesh and incorporating trace gaps in touch electrodes to minimize light shielding, allowing for higher transmittance and improved display effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal mesh touch electrodes are used on flexible display screens, then touch sensitivity and flexibility are improved, but light shielding increases and transmittance decreases
Solution Approach 1:
The patent applies local quality by creating different touch electrode densities in different display regions. The edge portions have lower metal trace density (higher transmittance) while the center portion maintains higher metal trace density (better touch sensitivity), allowing each region to have optimized properties for its specific function
Solution Approach 2:
The patent changes the physical parameters of the metal mesh by adjusting the trace width, trace spacing, and trace pattern in different regions. By modifying these parameters, the patent achieves different levels of light transmittance and touch sensitivity across the display screen
2Reliability
If metal mesh density is increased to improve touch electrode coverage, then touch sensitivity improves, but light shielding increases and display effect deteriorates
Solution Approach 1:
The patent segments the display screen into multiple regions (edge portions and center portion) with different metal mesh densities. This segmentation allows the touch electrode coverage to be optimized separately in each region, preventing uniform high density from causing excessive light shielding across the entire screen
3Ease of manufacture
If uniform metal mesh density is used across the display, then manufacturing simplicity is maintained, but edge portion viewing angle and display effect are limited
Solution Approach 1:
The patent implements local quality by designing different metal mesh patterns for edge portions versus the center portion. The edge portions use a first metal mesh pattern optimized for viewing angle and transmittance, while the center portion uses a second metal mesh pattern optimized for touch sensitivity, thereby adapting to different functional requirements in different regions
Data Source
AI summary
Disclosed is a flexible display panel, comprising a flexible substrate; an organic light emitting diode layer, disposed on the flexible substrate, wherein the organic light emitting diode layer comprises a plurality of sub pixels arranged at intervals; a metal mesh, disposed on the organic light emitting diode layer, wherein metal traces of the metal mesh are correspondingly arranged in gaps among the plurality of sub pixels disposed at intervals, and the metal traces of the metal mesh surround to form a plurality of touch electrodes, and at least one of the touch electrodes comprises at least one first touch area, and the first touch area is correspondingly arranged with at least two of the sub pixels. The flexible display panel can improve the display effect of the flexible display panel by reducing the arrangement density of the metal traces of the metal mesh.