Display Substrate Wiring Tips for Static Discharge
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Solution Overview
Problem
Static electricity poses a significant challenge in the electronics industry, affecting production efficiency and yield, as it can cause damage to electronic devices and fail electrostatic discharge tests, necessitating a display substrate that effectively manages static electricity.
Innovation Solution
A display substrate design featuring a display area and a non-display area with ground terminals, first and second wirings that are connected to these terminals, and include tips to facilitate efficient static electricity discharge, with the second wiring having multiple tips around the display area to enhance discharge efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a display substrate is designed without special electrostatic discharge structures, then the device complexity is low and manufacturing is simple, but the substrate cannot effectively discharge static electricity and fails ESD tests
Solution Approach 1:
The grounding wiring is segmented into multiple parts: a first wiring surrounding the display area, a second wiring between the first wiring and display area with multiple tips, and connection wirings to ground terminals. This segmentation creates multiple discharge paths while maintaining manageable complexity through modular structure
Solution Approach 2:
The second wiring with multiple tips acts as an intermediary between the first wiring and the display area, providing intermediate discharge points that facilitate static electricity transfer without requiring direct complex connections throughout the display area
2Reliability
If multiple wirings with tips are added to improve electrostatic discharge, then the discharge efficiency improves, but the manufacturing precision requirements increase
Solution Approach 1:
The wiring structure is divided into distinct segments (first wiring, second wiring with tips, connection wirings) that can be formed in separate manufacturing steps, allowing each segment to be optimized and controlled independently for better precision
Solution Approach 2:
The tips of the second wiring are preliminarily positioned and formed with specific geometries (triangle, quadrilateral, or pentagon cross-sections) before final wiring connections are established, ensuring proper discharge point placement and reducing subsequent alignment requirements
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
The solution effectively conducts static electricity through multiple paths, improving discharge efficiency and preventing damage to the display substrate, thereby enhancing electrostatic discharge capabilities and meeting customer verification standards.
Implementation Method 1
the second wiring having at least one tip on a side closer to the first wiring, and the at least one tip pointing to the side of the first wiring, wherein, the first wiring and the second wiring are respectively connected to the at least one ground terminal
Data Source
AI summary
A display substrate comprises a display area and a non-display area around the display area; at least one ground terminal located in the non-display area; a first wiring disposed in the non-display area and being around the display area; and a second wiring disposed between the first wiring and the display area and being positioned around the non-display area. The second wiring is provided with at least one tip on a side closer to the first wiring, the at least one tip pointing to the side of the first wiring. The first wiring and the second wiring are respectively connected to the at least one ground terminal.