Display Panel Electrostatic Charge Conductive Layer
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Solution Overview
Problem
During the manufacturing of liquid crystal display panels, electrostatic charges generated by cutting the color filter substrate can damage the peripheral wires on the array substrate, as existing technologies fail to effectively protect these wires from static electricity-induced breakdown.
Innovation Solution
An electrostatic charge conductive layer is integrated into the array substrate, comprising a charge receiving portion and a charge conductive portion that directs electrostatic charges to a ground wire, preventing damage to the peripheral wires by dissipating the charges before they reach the wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If color filter substrate is cut along cutting line to expose metal wires, then peripheral wires are exposed for connection, but electrostatic charges damage the peripheral wires
Solution Approach 1:
A ground lead structure is introduced as an intermediary between the cutting line and the peripheral wires. The ground lead includes a first lead portion positioned between the cutting line and peripheral wires, and a second lead portion connected to a common electrode line, providing a safe path for electrostatic charges to discharge without damaging the peripheral wires
Solution Approach 2:
The ground lead structure is pre-configured in the array substrate before the color filter substrate cutting process. By having the first lead portion already positioned between the cutting line and peripheral wires, the protection mechanism is in place before electrostatic charges are generated during cutting
2Reliability
If ground lead and electrostatic protection layer are added to array substrate, then electrostatic protection is improved, but device complexity increases
Solution Approach 1:
The ground lead structure is merged with the common electrode line through electrical connection. The second lead portion of the ground lead is electrically connected to the common electrode line, which already exists in the array substrate. This integration allows the ground lead to utilize the existing common electrode line infrastructure, reducing the need for completely separate protection circuits
Solution Approach 2:
The common electrode line serves dual functions: it maintains the liquid crystal display's electrical operation and simultaneously acts as a discharge path for electrostatic protection. By connecting the ground lead to the common electrode line, the same conductive structure performs both its original function and the additional protection function
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 electrostatic charge conductive layer effectively shields the peripheral wires from damage by conducting electrostatic charges to ground, enhancing the reliability of the display panel by preventing electrostatic breakdown and ensuring the integrity of the manufacturing process.
Implementation Method 1
an electrostatic charge conductive layer disposed on a side of the insulating layer distal to the base substrate. The electrostatic charge conductive layer conducts the electrostatic charge generated by the cutting of the color filter substrate
Data Source
Figure 1
Figure 2~3
AI summary
An array substrate comprises a base substrate (6); a plurality of peripheral wires (3) on the base substrate (6); an insulating layer (2) on a side of the plurality of peripheral wires (3) distal to the base substrate (6); and an electrostatic charge conductive layer (4) on a side of the insulating layer (2) distal to the plurality of peripheral wires (3) for conducting an electrostatic charge in the array substrate to ground.