Touch Display Panel Trace Layout for Narrow-Bezel FMLOC
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge of implementing narrow bezels in flexible multi-layer on cell (FMLOC) technology is exacerbated by the difficulty in ensuring touch traces are above the dam structure in narrow bezels, leading to trace layout limitations and increased risk of poor manufacturing due to dense trace arrangements in corners.
Innovation Solution
The touch display panel design includes single-layered touch traces in different layers, with adjacent traces distributed in alternating layers, and a dam structure that separates these traces, reducing the risk of contact and allowing for a more efficient layout in narrow bezels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If touch traces are arranged densely in corner areas to enable narrow bezel, then the bezel width is reduced, but the risk of poor manufacturing increases due to dense trace arrangements
Solution Approach 1:
The patent transitions from planar trace arrangement to three-dimensional multi-layer stacking. By distributing adjacent single-layered touch traces across different conducting layers (first conducting layer and second conducting layer), the solution utilizes the vertical dimension to reduce horizontal spacing requirements, enabling narrow bezel while maintaining manufacturing reliability through separated trace layers.
2Length of stationary object
If single-layered traces are used in different layers, then the vertical layout width is reduced, but the device complexity increases due to multi-layer trace arrangement
Solution Approach 1:
The patent segments the touch trace structure into distinct single-layered traces in different conducting layers. By dividing the trace system into separate layers with specific patterns (first pattern in first conducting layer, second pattern in second conducting layer), the solution reduces vertical layout width while managing complexity through systematic layer separation and pattern differentiation.
3Adaptability or versatility
If touch traces extend to bonding area through corner areas, then the wiring is enabled in limited spaces, but the trace layout becomes more difficult due to space constraints
Solution Approach 1:
The patent enables wiring in limited corner spaces by utilizing the vertical dimension through multi-layer trace arrangement. Single-layered touch traces are distributed across different conducting layers, allowing traces to extend to the bonding area through corner regions without horizontal interference, thus achieving wiring capability in constrained spaces while managing layout complexity through layer-based organization.
Data Source
AI summary
Embodiments of the disclosure provide a touch display panel and a display device. The touch display panel includes a base substrate, where the base substrate includes a display area, a bezel area surrounding the display area and a bonding area extending from the bezel area on one side; and a touch structural layer, on a side of the base substrate. The touch structural layer includes a plurality of touch traces in the bezel area; and at least part of the touch traces are single-layered traces and adjacent single-layered touch traces are disposed in different layers.