Display Panel Touch Routing Through Border Passage Holes
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Solution Overview
Problem
The layout of touch wires in the border area of display panels limits the development of narrow borders, as they require a larger border size to maintain flatness and prevent short circuits, which contradicts the trend of increasing screen-to-body ratios.
Innovation Solution
The implementation of wire passage holes in the border area allows touch wires to connect to metal leads parallel to the encapsulation layer, reducing the need for perpendicular extensions and thus minimizing the border size while ensuring reliable signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If touch wires are laid out in the border area of the touch layer, then touch functionality is achieved, but the border size increases which limits screen-to-body ratio
Solution Approach 1:
The patent transitions the touch wire routing from a planar layout on the encapsulation layer to a three-dimensional configuration using wire passage holes that extend vertically through the encapsulation layer. This dimensional change allows touch wires to connect to metal leads in the display area without requiring extended border area, thus resolving the contradiction between achieving touch functionality and minimizing border size.
2Reliability
If touch wires extend perpendicular to the encapsulation layer to connect to metal leads, then connection is achieved, but flatness requirements increase and short circuit risk increases
Solution Approach 1:
The patent introduces wire passage holes as intermediary structures that provide a controlled pathway through the encapsulation layer for touch wire connections. These holes serve as mediators between the touch wires and metal leads, enabling reliable electrical connection while maintaining encapsulation layer flatness and preventing short circuits by providing isolated connection paths.
Data Source
AI summary
A display panel and a display apparatus. The display panel is provided with a display area and a non-display area surrounding the display area. The non-display area comprises a border area (BA). The display panel comprises a display substrate. The display substrate comprises a first metal layer (600); a touch layer, which is provided with a touch electrode and a touch wire connected to the touch electrode, the touch electrode being arranged in the display area; a drive circuit (900) which is provided in the non-display area; and a wire passage hole (700), which is arranged in the border area (BA). The touch wire is connected to a metal lead of the first metal layer (600) through the wire passage hole (700), and the metal lead is configured to be connected to the driving circuit (900).