Foldable Display Power Management via Area Segmentation
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Solution Overview
Problem
Foldable display devices face increased power consumption when displaying images in folded areas, which is not efficiently managed by existing technologies.
Innovation Solution
A foldable display device with a timing controller and data driver that receive input image data as separate data packets to determine whether areas are folded, and selectively block power signals to non-viewed areas, using pattern detection and folding control signals to prevent output when folded, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the foldable display device displays images in both folded and unfolded areas, then the display coverage is maximized, but power consumption increases
Solution Approach 1:
The display panel is divided into multiple display areas (first display area and second display area) that can be independently controlled. The timing controller separately manages data packets for each area, and the data driver independently controls data signal output to each area based on folding state detection, enabling selective power management for each segment.
Solution Approach 2:
Different power management strategies are applied to different display areas based on their folding state. When folded, the corresponding display area receives no data signals and has power blocked to its receiver and shift register, while the unfolded area continues normal operation with full power supply, creating localized quality differences in power consumption.
2Duration of action of stationary object
If the data driver continuously outputs data signals to all display areas, then display continuity is maintained, but energy waste occurs in folded areas
Solution Approach 1:
The data driver dynamically adjusts its operation based on real-time folding state detection. The receiver detects folding patterns in data packets and generates dynamic folding control signals that continuously update the shift register's enable state, allowing the system to adapt power consumption to the current display configuration rather than operating statically.
Solution Approach 2:
The system periodically detects folding patterns in incoming data packets and adjusts power supply accordingly. The folding control signal is regenerated for each frame based on the current folding state, creating a periodic control rhythm that synchronizes power management with display refresh cycles.
Data Source
AI summary
A foldable display device includes a display panel including a first display area and a second display area, a timing controller configured to receive input image data and to provide a first data packet corresponding to the first display area and a second data packet corresponding to the second display area concurrently, and a data driver configured to receive the first data packet and the second data packet, to determine whether the first display area or the second display area is folded based on the first data packet and the second data packet, and to not output a first data signal corresponding to the first data packet or a second data signal corresponding to the second data packet when the first display area or the second display area is folded.