Display Panel Signal Bus Layout for Lower Electrostatic Damage
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Solution Overview
Problem
Current display technologies face issues with electrostatic damage to circuits due to horizontal signal buses that run across the entire display screen, affecting performance reliability.
Innovation Solution
The display panel design includes a signal bus with first and second line segments arranged in different layers, intersecting at a right angle, and connection line segments that reduce electrostatic accumulation by minimizing resistance and coupling capacitance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a horizontal signal bus runs transversely across the entire display screen to conduct dot-screen testing, then signal transmission is enabled, but electrostatic damage risk increases
Solution Approach 1:
The signal bus is segmented into multiple layers (first signal bus layer and second signal bus layer) rather than using a single horizontal bus across the entire screen. This segmentation reduces electrostatic accumulation by distributing the signal path and minimizing continuous conductive paths that could accumulate static charge.
Solution Approach 2:
The signal transmission is moved from a single-plane horizontal arrangement to a multi-layer vertical arrangement. The first and second signal buses are arranged in different layers, transforming the problem from a 2D horizontal layout to a 3D multi-layer structure, which reduces electrostatic coupling and damage risk.
2Object-affected harmful factors
If signal buses are arranged in multiple layers to reduce electrostatic damage, then electrostatic protection is improved, but device complexity increases
Solution Approach 1:
The first signal bus and second signal bus are merged into a coordinated multi-layer system where the buses in different layers work together to provide both signal transmission and electrostatic protection. This merging approach achieves enhanced protection without proportionally increasing complexity, as the layers are integrated into the existing display panel structure.
Data Source
AI summary
A display panel and a display device. The display panel includes a substrate, a pixel circuit, a signal terminal, a signal bus extending in a first direction, and a connection line segment extending in a second direction. The pixel circuit, the signal terminal, the signal bus, and the connection line segment are arranged at a side of the substrate. Pixel circuits are provided in the first direction to form a pixel circuit row. Pixel circuit rows are provided in the second direction. Signal terminals are provided at a side of the pixel circuit rows in the second direction. The signal bus is arranged between two adjacent pixel circuit rows. The connection line segment has one end electrically connected to the signal bus and the other to the signal terminal. The signal bus comprises a first and a second line segments arranged in the first direction and in different layers.