Display Panel Fan-Out Layout for Static Burn Prevention
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Solution Overview
Problem
The manufacturing process of display panels can result in damage to components due to static electricity caused by charged lines during the transfer process, leading to a burnt phenomenon.
Innovation Solution
Incorporation of a dummy pattern in the fan-out area between data line groups, which is insulated and not connected to any conductors, to prevent voltage application and reduce static charge accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the substrate is transferred via transfer rollers during manufacturing, then the manufacturing process can be completed, but static electricity is generated causing burnt phenomenon and component damage
Solution Approach 1:
A dummy pattern is introduced as an intermediary element between the data lines and the transfer rollers. This dummy pattern acts as a mediator that intercepts and dissipates static electricity generated during the transfer process, preventing it from reaching and damaging the actual data lines and components. The dummy pattern is specifically positioned in the fan-out area where static charge accumulation is most problematic.
Solution Approach 2:
The invention converts the harmful static electricity generation during transfer into a beneficial effect by using the dummy pattern to deliberately attract and hold the static charge. The dummy pattern serves as a sacrificial element that safely contains the harmful electrostatic discharge, transforming what would be destructive energy into a controlled phenomenon that protects the functional circuitry.
2Reliability
If dummy pattern is added between data line groups, then static electricity damage is prevented, but device structure becomes more complex
Solution Approach 1:
The dummy pattern is applied locally only in the fan-out area where data lines are most vulnerable to static damage during transfer. Rather than adding protective structures throughout the entire device, the solution concentrates the protective function in the specific region where it is needed most, maintaining simplicity in other areas of the device.
Solution Approach 2:
The dummy pattern is divided into multiple segments corresponding to different data line groups. Each dummy pattern segment is positioned between specific groups of data lines, allowing the protection function to be distributed and modular. This segmented approach reduces overall complexity compared to a single large protective structure.
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
Prevents damage to components on the substrate by mitigating static electricity-induced burns, ensuring reliable operation of the display device.
Implementation Method 1
a dummy pattern disposed in the fan-out area between the first data line group and the second data line group, wherein the dummy pattern is in a floating state
Implementation Method 2
the lines may be charged based on friction between the substrate and the transfer rollers
Data Source
AI summary
A display device includes a first data line group disposed in a fan-out area and including a plurality of first data lines extending to a display area adjacent to the fan-out area, a second data line group disposed in the fan-out area and including a plurality of second data lines extending to the display area adjacent to the fan-out area, a plurality of pixels disposed in the display area and connected to the first and second data lines, and a dummy pattern disposed in the fan-out area between the first data line group and the second data line group, where the dummy pattern is in a floating state.