Gate Driver Density in Bending Display Panels
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Solution Overview
Problem
Folding display screens face frequent bending-related gate driver failures due to the strain on gate driver units and wiring, leading to poor display performance over time.
Innovation Solution
The display panel is designed with non-bending and bending frame regions of different densities for gate driver unit distribution and wiring, with higher densities in non-bending regions and lower densities in bending regions, optimizing the placement of gate driver units and wiring to reduce strain and damage during folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If gate driver units are disposed in the bending region to enable display functionality, then the display can cover the entire screen area, but the gate driver units are easily damaged after multiple bends causing display failure
Solution Approach 1:
The patent applies local quality by differentiating the structural properties of different regions: the bending region uses a flexible substrate with reduced gate driver unit density to accommodate folding, while the non-bending frame regions use rigid substrates with higher gate driver unit density for stable signal generation. This regional differentiation allows the display to achieve full-screen coverage while protecting gate driver units from bending-induced damage.
2Device complexity
If gate driver units are disposed in the bending region, then the display structure is simplified, but the gate driver units suffer damage from repeated bending
Solution Approach 1:
The patent segments the display structure into three distinct regions: a bending region with flexible substrate and reduced gate driver density, and two non-bending frame regions with rigid substrates and higher gate driver density. This segmentation isolates the gate driver units from bending stress while maintaining simplified overall structure, thereby improving reliability without significantly increasing complexity.
3Manufacturing precision
If gate driver units are densely packed in the bending region, then the display resolution is improved, but the gate driver units are more susceptible to bending damage
Solution Approach 1:
The patent implements local quality by varying gate driver unit density across different regions: higher density in non-bending frame regions where precision is critical and lower density in the bending region where flexibility is prioritized. This approach maintains adequate display resolution while reducing the number of gate driver units exposed to bending damage.
4Reliability
If gate driver units are sparsely distributed in the bending region, then the gate driver reliability is improved, but the display coverage area is reduced
Solution Approach 1:
The patent segments the gate driver unit distribution into density zones: sparse distribution in the bending region to ensure reliability and full distribution in the non-bending frame regions to maximize display coverage. This segmented approach achieves both goals by placing gate driver units strategically in regions where they can function reliably while still providing comprehensive screen coverage through the non-bending regions.
Data Source
AI summary
The present invention discloses a display panel and a display device. The display panel includes a gate driver circuit and a plurality of driving wires. By disposing gate driver circuits with different distribution density in non-bending frame regions and adjusting corresponding driving wires wired from an output end of the gate driver circuit to a bending displaying region, normal driving of the bending displaying region can be achieved and simultaneously damages to the gate driver circuit during folding can be mitigated or obviated.