Display Panel ESD Via Structure Bezel Reduction
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Solution Overview
Problem
The increasing display resolution and the need for electrostatic discharge circuits in display panels lead to a larger bezel area due to the requirement for numerous wires and ESD circuits, limiting the reduction of the bezel size.
Innovation Solution
A display panel design incorporating a fan-out wire, an electrostatic discharge device with a first and second electrode, and a first conductive via structure that is electrically connected to the fan-out wire, the first electrode of the ESD device, and the signal wire, optimizing the layout to improve space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display resolution increases and ESD circuits are added, then the electrostatic discharge protection is improved, but the bezel area increases
Solution Approach 1:
The patent merges the ESD circuit with the pixel array substrate by directly forming the ESD electrode on the substrate surface, integrating multiple functions (display and protection) into a single structure, thereby eliminating the need for separate ESD circuit areas and reducing the bezel width
Solution Approach 2:
The patent transitions from a planar ESD circuit layout to a three-dimensional structure by forming the ESD electrode through multiple conductive layers and vias, utilizing vertical space to reduce the horizontal footprint and thereby minimizing the bezel area
2Adaptability or versatility
If the number of wires in the peripheral area increases, then the signal transmission is improved, but the bezel area increases
Solution Approach 1:
The patent routes signal wires through the vertical via structures and conductive layers rather than only across the peripheral surface, utilizing the third dimension to reduce the number of wires needed in the bezel area while maintaining signal transmission functionality
Solution Approach 2:
The conductive via structures serve multiple functions simultaneously: they provide electrical connection between layers, act as ESD protection pathways, and enable signal transmission, thereby reducing the need for separate dedicated wires and minimizing the bezel area
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
This design enhances the electrostatic discharge effect while minimizing the bezel area by efficiently integrating ESD components into the display panel layout, thereby reducing the overall size of the display panel.
Implementation Method 1
The first conductive via structure is electrically connected to the fan-out wire, the first electrode of the electrostatic discharge device, and the signal wire
Data Source
AI summary
A display panel including a fan-out wire, an electrostatic discharge device, a signal wire, and a first conductive via structure is provided. The electrostatic discharge device has a first electrode and a second electrode. The first conductive via structure is electrically connected to the fan-out wire, the first electrode of the electrostatic discharge device, and the signal wire.