Gate Driving Circuit Bezel Width Static Electricity Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Reducing bezel width in display devices increases the risk of defects due to static electricity, leading to decreased product yield.
Innovation Solution
Incorporating a gate driving circuit with an output capacitor design that includes a first electrode with a non-overlapping extension region and an insulating layer, along with a groove portion and protruding pattern, to prevent short-circuit defects caused by static electricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the bezel width is reduced, then the display device meets user demand for narrow bezels, but the gap between electrode patterns in the gate driving circuit is reduced, causing defects due to static electricity damage
Solution Approach 1:
The gate driving circuit is divided into multiple stage circuits (first stage circuit, second stage circuit, etc.) that are sequentially arranged. Each stage circuit independently drives a portion of the gate lines, allowing the circuit to be distributed across the bezel area. This segmentation enables the bezel width to be reduced while maintaining adequate spacing between critical electrode patterns within each modular stage circuit, thereby preventing static electricity damage while meeting narrow bezel requirements.
2Length of stationary object
If the gap between electrode patterns is reduced to accommodate narrower bezel, then the bezel width is reduced, but static electricity can cause short-circuit defects between electrodes
Solution Approach 1:
An insulating layer is introduced as an intermediary between the electrode patterns (source electrode, drain electrode, and gate electrode) within the gate driving circuit. This insulating layer covers the electrode patterns and prevents direct contact that would cause short-circuits from static electricity. The insulating layer acts as a protective mediator that allows reduced spacing between electrodes while blocking harmful electrostatic discharge paths.
3Length of stationary object
If the gate driving circuit is embedded in the bezel area, then the display device achieves narrow bezel design, but the circuit becomes more susceptible to static electricity defects
Solution Approach 1:
The gate driving circuit is designed with preliminary protective structures including the insulating layer that covers electrode patterns before assembly and operation. The stage circuits are configured with built-in insulation and spacing considerations during the design phase, preventing static electricity defects before they can occur. This preliminary protection enables the circuit to function reliably in the narrow bezel area without requiring post-manufacturing adjustments.
Data Source
AI summary
A display device comprises: a display panel including a display area and a bezel area around the display area; a gate driving circuit driving a plurality of gate lines in the display area; an output line extending from the gate driving circuit; a jumping part in the bezel area and connecting the output line with a gate line of the plurality of gate lines; an output transistor in the gate driving circuit and connected to the output line; an output capacitor in the gate driving circuit between the output transistor and the jumping part, the output capacitor including a first electrode connected to a gate electrode of the output transistor and a second electrode partially overlapping the first electrode and the second electrode connected to a drain electrode of the output transistor and the output line, the first electrode including an extension region non-overlapping with the second electrode.