Flexible Display Panel Alternating Power Supply Regions
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Solution Overview
Problem
The luminance uniformity of flexible display panels deteriorates due to voltage drops in power supply wiring, leading to non-uniform supply voltage across pixels, especially in larger or higher resolution displays, which existing solutions attempt to address with complex compensation circuits that increase complexity and cost.
Innovation Solution
A flexible display panel design with alternately arranged effective display regions and power supply lead regions, where the power supply lead region has a greater width than the connection lines and may include a gate driving circuit, reducing total resistance and voltage drop, and can be concealed behind the display regions to maintain aesthetics and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the screen size and resolution are increased, then the display quality is improved, but the luminance uniformity deteriorates due to voltage drops in power supply wiring
Solution Approach 1:
The display panel is divided into multiple effective display regions separated by power supply lead regions. This segmentation allows the power supply voltage to be replenished at multiple points across the panel, reducing the cumulative voltage drop effect and maintaining luminance uniformity even in large high-resolution displays
Solution Approach 2:
Power supply lead regions are introduced as intermediary zones between effective display regions. These intermediary regions contain power supply leads that act as voltage replenishment points, mediating the voltage distribution across the display panel and preventing luminance non-uniformity
2Reliability
If conventional compensation circuits are added to reduce voltage drop effects, then luminance uniformity is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The power supply lead regions are extracted and separated from the effective display regions, forming distinct intermediary zones. This extraction eliminates the need for complex compensation circuits within the display area, simplifying the overall device structure while maintaining luminance uniformity through the physical separation and dedicated power supply function
Solution Approach 2:
Multiple identical power supply lead regions are distributed across the display panel, copying the power supply function at regular intervals. This repetitive structure provides uniform voltage replenishment without requiring complex control logic, reducing device complexity while ensuring luminance uniformity
Data Source
AI summary
The embodiments of the present invention provide a flexible display panel and a display device comprising the flexible display panel. The flexible display panel comprises a plurality of effective display regions, each effective display region comprising a pixel array; and at least one power supply lead region, which comprises at least one power supply lead in electrical connection with a power supply line of the flexible display panel; and the effective display regions and the power supply lead region are arranged alternately. For display devices using the flexible display panel according to the embodiments of the present invention, especially those having a larger size or higher resolution, the luminance uniformity can be improved and enhanced, and the advantages of the flexible display device can be further strengthened.