Arc-Shaped Wearable Display Panel with Radial Signal Routing
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Solution Overview
Problem
Existing OLED display panels in wearable devices face issues with large voltage drops and signal crosstalk due to long signal transmission paths and parallel arrangement of signal lines, particularly in arc-shaped display configurations, which affect display performance and energy efficiency.
Innovation Solution
The display panel design includes a first display portion in an arc shape surrounding a second display portion, with stretchable and deformable transfer portions connecting the first display portion to the second, and signal lines routed in radial directions to minimize length and reduce voltage drops, while using multi-path selection circuits to share data signals, thereby optimizing signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If signal lines are arranged in parallel to connect the first display portion and second display portion, then the connection is simple, but voltage drops increase and signal crosstalk occurs due to long transmission paths
Solution Approach 1:
The signal lines transition from a parallel arrangement to a radial arrangement, changing the dimensional pattern of connection. The data signal lines extend from the bonding portion in radial directions toward the first display portion, reducing transmission distance and avoiding the voltage drop issues associated with parallel line configurations.
Solution Approach 2:
The signal lines are arranged in radial directions emanating from the bonding portion, creating a curved/spheroidal pattern rather than straight parallel lines. This radial curvature optimizes the transmission path geometry, minimizing length while maintaining connection between the second and first display portions.
2Area of stationary object
If the first display portion is arranged in an arc shape surrounding the second display portion, then the border width is minimized, but the signal transmission path becomes longer causing voltage drops
Solution Approach 1:
The signal lines are configured to extend in radial directions from the bonding portion, changing from linear parallel paths to a radial dimensional pattern. This allows the signal lines to reach the arc-shaped first display portion more efficiently, reducing transmission distance while accommodating the curved border configuration.
3Loss of energy
If data signal lines are shared between first and second display portions, then energy efficiency is improved, but signal crosstalk may increase
Solution Approach 1:
The data signal lines are arranged in radial directions rather than parallel paths, changing the spatial dimension of signal transmission. This radial configuration reduces electromagnetic interference and signal crosstalk while enabling shared data signal lines between the first and second display portions, achieving energy efficiency without compromising signal integrity.
Data Source
AI summary
A display panel includes a first display portion, a second display portion and a bonding portion connected to the second display portion. The first display portion extends in an arc shape in a flatten state and surrounds the second display portion in an enclosed state. The first display portion has a first display area and first peripheral area(s) each located at an end of an arc presented by the first display portion. The first display portion includes a plurality of first sub-pixels, first scanning signal lines extending substantially in a second direction and each connected to at least one column of first sub-pixels, first data signal lines extending substantially in a first direction and each connected to at least one row of first sub-pixels, and first gate driver circuit(s) disposed in the first peripheral area(s) and connected to the first scanning signal lines.