Scan Driver Antistatic Pattern Layout Against Dielectric Breakdown
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Solution Overview
Problem
Static electricity generated during the manufacturing of display devices can damage insulating layers or transistors, particularly when transferred through substrates, leading to potential dielectric breakdown.
Innovation Solution
Incorporating an antistatic pattern in the non-display area of the display device, which includes a first portion overlapping the scan driver and a second portion extending beyond it, dispersing static electricity to prevent concentration and subsequent dielectric breakdown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the scan driver is placed in the non-display area to drive the gate lines, then the display device can be operated, but static electricity may accumulate and cause dielectric breakdown
Solution Approach 1:
An antistatic pattern is introduced as an intermediary element between the scan driver and the surrounding environment. This pattern provides a controlled path for static electricity discharge, preventing direct damage to the scan driver and gate lines while allowing the display device to operate normally
Solution Approach 2:
The patent converts the harmful effect of static electricity into a beneficial discharge mechanism. By providing the antistatic pattern with extended length and specific geometric features (protrusions), static electricity is redirected through a controlled path that protects critical components while maintaining device functionality
2Reliability
If the antistatic pattern is made longer to improve static electricity dispersal, then protection against dielectric breakdown improves, but the device structure becomes more complex
Solution Approach 1:
The antistatic pattern extends in the second direction (crossing the gate line direction) beyond the scan driver's length, utilizing the spatial dimension in the non-display area. This dimensional extension provides effective static electricity dispersal without interfering with the display area or requiring additional layers
Solution Approach 2:
The antistatic pattern includes protrusions that segment the pattern into distinct regions. These protrusions enhance the dispersal effect by creating multiple discharge paths while maintaining a single continuous pattern structure, thus improving protection without proportionally increasing complexity
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 antistatic pattern effectively disperses static electricity, preventing dielectric breakdown and ensuring the integrity of the display device components.
Implementation Method 1
an antistatic pattern in the non-display area, extending in the second direction, and having a second length greater than the first length in the second direction
Data Source
AI summary
A display device includes: a plurality of gate lines in a display area and extending in a first direction; a scan driver in a non-display area surrounding the display area, connecting the gate lines, extending in a second direction crossing the first direction, and having a first length in the second direction; and an antistatic pattern in the non-display area, extending in the second direction, and having a second length greater than the first length in the second direction.