Display Panel Electrostatic Protection via Stacking Unit Corona Discharge
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Solution Overview
Problem
Thin film transistor liquid crystal displays face significant issues with electrostatic charge accumulation, leading to electrostatic discharge that can damage internal elements and wires, necessitating effective electrostatic protection measures.
Innovation Solution
The implementation of a display panel structure featuring a first and second stacking unit in the non-display area, comprising conductive layers, through holes, and protruding portions that facilitate corona discharge neutralization of electric charges, with surplus charges able to flow out through semiconductor layers or additional conductive connections to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional thin film transistor liquid crystal display structure is used, then manufacturing process is simple, but electrostatic charge accumulation causes electrostatic discharge that damages internal elements and wires
Solution Approach 1:
The electrostatic protection structure is segmented into multiple functional layers: first conductive layer, second conductive layer, semiconductor layer, and insulating layers with through-holes. Each layer performs a specific function in charge dissipation, dividing the complex protection mechanism into manageable segments that work together systematically.
Solution Approach 2:
The patent implements a nested structure where the first conductive layer is embedded in the substrate, the second conductive layer is positioned above it with through-holes connecting them, and the semiconductor layer is nested within the second conductive layer. This nested arrangement creates multiple pathways for charge dissipation while maintaining a compact form factor.
2Object-affected harmful factors
If electrostatic protection structures are added to prevent charge accumulation, then electrostatic discharge damage is reduced, but manufacturing process complexity increases
Solution Approach 1:
The electrostatic protection structure is built into the display panel during the initial fabrication process rather than added as a post-processing step. The conductive layers, insulating layers, and through-holes are formed simultaneously with the thin film transistor layers, ensuring electrostatic protection is pre-established before the panel enters service.
Solution Approach 2:
The conductive layers serve multiple functions: they act as electrode structures for the display function, provide charge dissipation pathways for electrostatic protection, and form structural frameworks for the overall panel design. This multi-functionality reduces the need for separate dedicated protection structures, simplifying the overall manufacturing process.
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 configuration effectively neutralizes electrostatic charges and prevents damage by allowing electric charges to be discharged safely, reducing the risk of structural and functional harm to the display panel components.
Implementation Method 1
The second protruding portion of the second stacking unit and the first protruding portion of the first stacking unit are correspondingly disposed so that the electric charges accumulating on the tip of the first protruding portion can neutralize with the electric charges accumulating on the tip of the second protruding portion through corona discharge.
Data Source
AI summary
A display panel includes a substrate, a first stacking unit, and a second stacking unit. The first stacking unit is disposed on the substrate and connected to a scan line. The first stacking unit includes a first conducting layer, a second conducting layer, at least one first through hole, and a first protruding portion. The first conducting layer is interposed between the second conducting layer and the substrate. The first through hole connects the first conducting layer and the second conducting layer. The position of the first protruding portion is relative to the position of the second protruding portion.