Display Panel Conductor Pattern Layout for Gate Driver ESD Protection
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Solution Overview
Problem
The formation of gate drivers on display panels makes them susceptible to electrostatic discharge (ESD), which can damage the drive circuits and impair the display's functionality, as existing methods to protect pixel drive circuits are not applicable due to different configurations.
Innovation Solution
A display panel design with conductor patterns forming part of the drive circuits, where a discharge portion narrows the interval between these patterns, allowing for controlled ESD discharge and preventing damage to the drive circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the gate driver is formed on the display panel, then material and processing costs are reduced, but the drive circuit becomes susceptible to ESD damage
Solution Approach 1:
The patent converts the harmful ESD energy into a beneficial discharge path by designing conductor patterns that intentionally guide ESD current away from critical circuit elements. The discharge portion acts as a sacrificial element that absorbs ESD energy, protecting the gate driver circuit while maintaining the cost benefits of integrated manufacturing
2Reliability
If the interval between conductor patterns is reduced to create discharge portions, then ESD discharge is controlled and directed, but the space for circuit elements is reduced
Solution Approach 1:
The conductor patterns are segmented into distinct portions: element forming portions for critical circuit elements and discharge portions for ESD management. This segmentation allows the discharge portions to be positioned with reduced intervals for ESD protection, while element forming portions maintain adequate spacing for proper circuit element formation and function
3Reliability
If discharge portions are provided in conductor patterns, then ESD damage to drive circuits is prevented, but the manufacturing process becomes more complex
Solution Approach 1:
The conductor patterns have different local qualities: element forming portions with wider intervals optimized for circuit element formation and discharge portions with narrower intervals optimized for ESD discharge. This local differentiation provides targeted ESD protection at critical locations while maintaining simplicity in other areas
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 effectively prevents ESD-induced damage to the drive circuits, ensuring the display panel's functionality by directing ESD discharge away from critical circuit elements, thus maintaining image display capabilities.
Implementation Method 1
a discharge portion is provided to at least one of the first conductor pattern and the second conductor pattern, wherein the discharge portion narrows an interval between the first conductor pattern and the second conductor pattern
Data Source
AI summary
A display panel comprises: a plurality of pixels formed on a surface of a substrate; one or more drive circuits formed on the surface to supply signals to the pixels lining up; and a plurality of conductor patterns formed on the surface, electrically separated from each other, and each partially configuring the drive circuit. The conductor patterns comprise: a first conductor pattern having a first element forming portion configuring a part of a first circuit element of the drive circuit; and a second conductor pattern having a second element forming portion configuring a part of a second circuit element of the drive circuit. A discharge portion to narrow an interval between the first and second conductor patterns so as to be partially narrower than an interval between the first and second element forming portions is provided to the first conductor pattern and/or the second conductor pattern.